Compare and contrast the marketing strategies used by Waitrose and Essay

Compare and contrast the marketing strategies used by Waitrose and ASDA in UK . How do they identify the needs of their customer - Essay Example The product should as well better the lives on the customers, who should always desire to come back for more; this keeps a business at a competitive advantage since it is capable of sustaining its customers. A marketing strategy should also be consistent such that, the marketing message remains the same. In this case, consumers will be certain of the product being sold. Hence, one should choose a certain appropriate market for his business and the marketing channels. In addition, a market for a business should be targeted such that, it is directed to the right customers. Normally, proper communication using right words attracts customers more; hence, an effective marketing strategy must be communicative (Hoos, 2010). Marketing strategies are inclusive of three forces, namely, competition, customer, and corporation. According to Jain, â€Å"a good marketing strategy should include a clear market definition, a good match between corporate strengths and the needs of the market and a su perior performance, relative to the competition in the key success factors of the business† (Jain n.d, pp 23). A good matching of the customer and corporation’s needs and objectives is important since it leads to a long relationship; however, competition must have an objective, for instance, the level of competition, which entails whether competition involves an entire market or a in a certain segment. Secondly, how to compete entails the means by which competition will take place, for instance, a product may be introduced to serve a specific customer’s need. Thirdly, when to compete involves a waiting for a certain time to penetrate into the market (Jain, n.d, pp 24). Therefore, according to Analoui (2003, pp 241), an effective marketing strategy should prioritize demands and wants of customers, identify a market for the business, select a marketing mix and drive the firm in to a competitive advantage. Marketing strategies used by Waitrose and ASDA in United Kin gdom and how they identify their customers Waitrose was founded by Wallace Waite, Arthur Rose, and David Taylor, when the self-service for product was introduced in 1951. However, it operates as a grocery retailer in the United Kingdom, and it is aimed at providing the convenience as supermarkets do, in terms of services and products that are of quality, value, and fresh and in variety. Waitrose mainly deals with food and drinks and targets the upper market, providing variety of their fresh and quality products. However, Waitrose faces competition from related firms like the Tesco; this is due to Waitrose’s high prices, while consumer are capable of buying groceries in any place as long as the prices are friendly and the groceries are fresh. However, one of the strategy Waitrose has adapted in order to attract and sustain customers is product differentiation and delivering product of high quality (Addidas 2003, pp 5). According to Chadwick et al, (2007 pp 14), Waitrose acquir ed 40% in LMS e-commerce grocery business to expand its online service. Due to technology, the online service was effective and able to serve customers anywhere in terms of home delivery of groceries

Looking to the future Essay Example for Free

Looking to the future Essay The purpose of this assignment is to identify and describe my personal, professional and academic goal, apply the Smart Goal process and explain each component, create how I will predict success in achieving my goals based on my past positive experiences, and my personality as it relates to being an online student. Obtaining my BA in Complimentary and Alternate Health while, attending Ashford University online will most definitely help with achieving my long-term academic, personal and professional goals. My Goals and SMART Goals Creating a game plan for success can be challenging, however after evaluating my future, building on past positive experiences, I need to determine what I need, to reach my long-term goal which is to become a Registered Dietician by the age of 48. By starting with my BA in Complimentary and Alternate Health I can achieve my short-term goal. This is a four year degree program that requires 120 credits to complete the Degree program. In the past, I attended school while being a full time mom and employee. I worked long hours and attend school at night; I was able to complete college with an Associate Degree in Business Office Technology. This is an example of setting SMART goals. After completing my degree program online at Ashford University I plan to continue with online classes at Auburn University. My long-term goal is to achieve my Master of Science with an emphasis in Nutrition Science. These goals will take hard work and commitment but they are realistic as well as achievable. Accountability and Countering Challenges Accomplishing these goals will take accountability, which starts with me. I am responsible for my success so I must have a plan that includes; overcoming obstacles that might have a negative impact on me being successful in school, I must set expectations for myself and meet them.

Character Development in Burmese Days by George Orwell :: essays research papers

I was intrigued by how the writer George Orwell portrayed each character's personality. Each character had their own unique characteristic. For example, Mr. Floury's character was unique in every aspect imaginable, by the way he tries to help Dr. Veraswami's get elected in the club. He was not always positive, but in some instances he was cruel. There was a demeanor about him that was portrayed very well from start to finish. The arrival of the bobbed blonde, Elizabeth Lackersteen, not only shows Flory as ill-fated suitor but gives Orwell the opportunity to prove that he's a reporter of nuanced social interactions and political intrigues. Other character's worth mentioning is Ma Hla May (Flory's servant); her actions throughout the book were marvelous. Each time she appeared in the scene, her presence was felt strongly. Her actions thoughtout the book were driven by her vanity, which led to her arriving at the church and embarrassing Mr. Flory. Against this backdrop of politics and ethics, Orwell presents romance. The book was not just about one-man entrance in a club, but also of the hatred people bestow on each other. Was it their vanity that had driven everyone in the town? Is the failure to socialize extended to the natives ? U Po Kyin, villain who tormented everyone, a man without any sympathy, a man who was known to be notorious throughout the town. Most of the turmoil, which occurred during the book can be traced back to U Po Kyin doings. The addition of U Po Kyin made the book mysterious and full of mayhem. This well plotted tale of betrayal and hypocrosy in an English colonial outpost is an extraordinarily good read on several levels. The character of Flory who despises the racist hypocrosy of his fellow expats yet is too weak to do anything about it is very well written. Flory is full of contradictions and ultimately these contribute to his

Analysis of Sir James Mackenzie (1852-1925) :: Essays Papers

Analysis of Sir James Mackenzie (1852-1925) James Mackenzie was a man of great importance during his lifetime and has been said to be one of the world's greatest pioneers in medicine (Mair, 4). His contributions to the field of medicine are still taught and read about around the world. In his research and writings, Mackenzie discussed the importance of the prevention and cure of disease and how we can teach our general practitioners and future medical students to become more familiar with the various stages of disease before suffering and even death occurs. He diverted much of his attention on the study of epidemiology and just how often diseases occur in different groups of people and why. The study of epidemiology is used to help prevent illness and to help manage patients that already have a disease (http://bmj.com/epidem/epid.html). During Mackenzie's time, the prevention and cure of disease was a very lingering topic that not a lot of people wanted to address. Because of Mackenzie's research, time, and effor ts taken towards the prevention and cure of disease, people have gained a better understanding and have taken a completely different outlook into the field of medicine. His efforts and contributions made a huge impact in the history of medicine and on "the future of medicine" as well. James Mackenzie was born April 4, 1853 in Pictstonhill Farm, Scone Scotland. He attended the medical school at Edinburgh University in 1874 during a promising and exciting time of which the germ theory of disease was shaking the medical world (Mair, 31). He completed his residency in 1879 and joined Dr. Briggs and Brown in general practice in Burnley, England. He wrote in his Personal Experiences that he "was fortunate to serve under two doctors with exceptional attainments, the one being a shrewd general practitioner of many years' experience, and the other a surgeon of no mean ability....It was an old-fashioned practice of many years' standing and we followed the old custom of dispensing our own medicines...I had an opportunity of judging the effects of remedies which I otherwise would not have obtained, and having that opportunity, I was able to make some observations on the actions of drugs that physicians and pharmacologists with all their magnificent opportunities had failed to achieve.

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WWW. JAGRANJOSH. COM SSC COMBINED GRADUATE LEVEL (MAIN) EXAMINATION 2012 QUESTION PAPER SSC Combined Graduate Level (Main) Examination 2012 Question Paper 1. (a) . . =? 9 44 27 44 (b) (c) 44 9 (d) 27 42 2. Complete the series 7, 26, 63, 124, 215, 342,? (a) 481 (b) 511 (c) 391 (d) 421 3. A woman sells to the first customer half her stock of apples and half an apple, to the second customer half an apple and half of her remaining stock and so also to a third and to a fourth customer. She finds that she has now 15 apples left.How many had she at first? (a) 250 (b) 155 (c) 125 (d) 255 4. There are 200 questions on a 3 hour examination. Among 200 questions, 50 are from Maths, 100 are in GK and 50 are in Science. He spent twice as much time on each mathematics question as for each other question. How many minutes did he spend on mathematics question? (a) 36 (b) 72 (c) 100 (D) 60 5. The reminder when (a) 2 (b) 3 919 + 6 is divided by 8 is (c) 5 (d) 7 6. The least five-digit perfect square n umber which is divided be 3, 4, 5, 6 and 8 is a) 14400 (b) 32400 (c) 10800 (d) 10201 7. Which of the following numbers does not fit into the series? 4, 19, 29, 40, 44, 51, 59, 73 (b) 51 (c) 44 (d) 29 (a) 59 8. What will be the remainder when 19100 is divided be 20? (b) 20 (c) 3 (d) 1 (a) 19 9. A toy factory manufactured a batch of electronic toys. If the toys were packed in boxes of 155 each, 13 boxes would not be filled completely. If the toys were packed in boxes of 65 each, 22 such boxes would not be enough to pack all of them. Coincidentally, in the end, the toys were packed in n toys each, without any remainder. The total number of toys was (a) 1424 (b) 1434 (c) 1444 (d) 1454 2 SSC Combined Graduate Level (Main) Examination 2012 Question Paper 10.A and B started a business with Rs 20000 and Rs 35000 respectively. They agreed to share the profit in the ratio of their capital. C joins the partnership with the condition that A, B, and C will share profit equally and pays Rs 220000 as premium for this, to be shared between A and B. This is to be divided between A and B in the ratio of (a) 10: 1 (b) 1: 10 (c) 9: 10 (d) 10: 9 11. A can complete a work in 20 days and B in 30 days. A worked alone for 4 days and then B complete the remaining work along with C in 18 days. In how many days can C working alone complete the work? (a) 12 (b) 68 (c) 72 (d) 90 12.A pipe can fill a cistern in 12 minutes and another pipe can fill it in 15 minutes, but a third pipe can empty it in 6 minutes. The first two pipes are kept open for 5 minutes in the beginning and then the third pipe is also opened. Number of minutes taken to empty the cistern is (a) 38 (b) 22 (c) 42 (d) 45 13. A and B can complete a job in 24 days working together. An alone can complete it in 32 days. Both of them worked together for 8 days and then A left. The number of days b will take to complete the remaining job is (a) 16 (b) 32 (c) 64 (d) 128 14. In a factory, there are equal number of women and children. Women work for 6 hours a day and children for 4 hours a day. During festival time, the work load goes up by 50%. The government rule does not allow children to work for more than 6 hours a day. If they are equally efficient and the extra work is done by women, then extra hours of work put in by women every day are (a) 5 (b) 3 (c) 4 (d) 9 15. A and B each working alone can do a work in 15 days and 25 days respectively. They started the work together, but B left after some time and A finished the remaining work in 7 days. After how many days from the start did B leave? (a) 3 (b) 5 (c) 7 (d) 9 16.A and B undertaken to do a piece of work for Rs 1200. A alone can do it in 8 days, while B can do it in 6 days. With the help of C, they complete it in 3 days. Find Cs share. (a) Rs 450 (b) Rs 300 (c) Rs 150 (d) Rs 100 17. By selling an article at 80% of its marked price, a trader makes a loss of 10%. What will be the profit percentage if he sells it at 95% if its marked price? (a) 6. 9 (b) 5 (c) 5. 9 (d) 12. 5 3 SSC Combined Graduate Level (Main) Examination 2012 Question Paper 18. By selling an umbrella for Rs 30, a shopkeeper gains 20%. During a clearance sale, the shopkeeper allows a discount of 10% of the marked price.His gain percentage during the sale season is (a) 7 (b) 7. 5 (c) 8 (d) 9 19. What is maximum percentage discount (approximately) that a merchant can offer on his marked price so that he ends up selling at no profit or loss, id he initially marked his goods up by 40%? (a) 60% (b) no discount (c) 33. 5% (d) 28. 5% 20. A shopkeeper marks the prices at 15% higher than the original price. Due to increase in demand, he further increase the price by 10%. How much percentage profit will he get? (a) 25 (b) 26. 5 (c) 20 (d) 24. 5 21. From a vessel containing100 litres of wine, 10 litres are drawn out and an equal amount of water is added.From the mixture, 10 litres is again drawn out and same quantity of water is added. What is the final ratio of wine and water? (a) 80 : 20 (b) 90 : 10 (c) 91 : 9 (d) 81 : 19 22. From each of two given numbers, half the smaller number is subtracted. After such subtraction, the larger number is 4 times as large as the smaller number. What is the ratio of the number? (a) 5: 2 (b) 1: 4 (c) 4: 1 (d) 4: 5 23. Men, women and children are employed to do a work in the proportion of 3: 2: 1 and their wages as 5: 3: 2. When 90 men are employed, total daily wages of all amounts to Rs 10350. Find the daily wage of a man. (a) Rs 45 (b) Rs 57. 0 (c) Rs 115 (d) Rs 75 24. Brothers A and B had some savings in the ratio 4: 5. They decided to buy a gift for their sister, sharing the cost in the ratio 3: 4. After they bought, A spent two-third of his amount while B is left with Rs 145. Then the value of the gift is (a) Rs 70 (b) Rs 105 (c) Rs 140 (d) Rs 175 25. The taxi charges in a city contain fixed charges and additional charge/km. The fixed charge is for a distance of upto 5 km and additional charge/km thereafter. The char ge for a distance of 10 km is Rs 350 and for 25 km is Rs 800. The charge for a distance of 30 km is (a) Rs 800 (b) Rs 750 (c) Rs 900 (d) Rs 950 SSC Combined Graduate Level (Main) Examination 2012 Question Paper 26. The marks of 3 students A, B and C are in the ratio 10: 12: 15. If the maximum marks of the paper are 100, then the marks of B cannot be in the range of (a) 20 – 30 (b) 40 – 50 (c) 70 – 80 (d) 80 – 90 27. The average of the test scores of a class of ‘m’ student is 70 and that of ‘n’ students is 91. When the scores of both the classes are combined, the average is 80. What is n/m? (a) 11/10 (b) 13/10 (c) 10/13 (d) 10/11 28. The average salary per head of all workers of an institution is Rs 60. The average salary per head of 12 officers is Rs 400.The average salary per head of the rest is Rs 56. Then the total number of workers in the institution is (a) 1030 (b) 1032 (c) 1062 (d) 1060 29. A cricket played 80 innings and s cored an average of 99 runs. His score in the last inning is zero run. To have an average of 100 at the end, his score in the last innings should have been (a) 10 runs (b) 1 run (c) 60 runs (d) 80 runs 30. A man spends an average of Rs 1694. 70 per month for the first 7 months and Rs 1810. 50 per month for the next 5 months. His monthly salary if he saves Rs 3084. 60 during the whole year is (a) Rs 2400 (b) Rs 3000 (c) Rs 1000 (d) Rs 2000 31.Three years ago, the average age of A, B and C was 27 years, and that of B and C five years ago was 20 years. A’s present age is (a) 30 years (b) 35 years (c) 40 years (d) 48 years 32. The average height of the basketball team A is 5 feet 11 inches and that of B is 6 feet 2 inches. There are 20 players in team A and 18 players in team B. The overall average height is (a) 72. 42 inches (b) 72 inches (c) 70. 22 inches (d) 70 inches 33. A shopkeeper sells a transistor at 15% above its cost price. If he had bought it at 5% more than what he p aid for it and sold it for Rs 6 more, he would have gained 10%.The cost price of the transistor is (a) Rs 800 (b) Rs 1000 (c) Rs 1200 (d) Rs 1400 34. A seller user 920 g in place of one kg to sell his articles at 15% gain on cost price, the actual percentage of profit is (a) 20 (b) 15 (c) 25 (d) 30 35. A man sold two houses for Rs 96000 each. In the sale of the first house, he incurred 20% profit and in the sale of the second, he incurred 20% loss. What is the gain or loss percentage in total? 5 SSC Combined Graduate Level (Main) Examination 2012 Question Paper (a) 6% gain (b) 6% loss (c) 4% gain (d) 4% loss 36. The price of a land passing through three hands, rises on the whole by 65%.If the first and second sellers earned 20% and 25% profit respectively. Find the profit earned by the third seller. (a) 20% (b) 55% (c) 10% (d) 25% 37. One year payment to the servant is Rs 500 plus one shirt. The servant leaves after 10 months and receives Rs 350 and a shirt of the same value. What i s the price of the shirt? (a) Rs 150 (b) Rs 350 (c) Rs 400 (d) Rs 500 38. A person purchased a certain number of articles at 11 articles for Rs 10 and sold them at 10 articles for Rs 11. Find the gain percentage. (a) 22 (b) 20 (c) 1 (d) 21 39. Of the adult population in a certain city, 45% of men and 25% of women are married.Assuming that no man marries more than one women, and vice versa, the percentage of total population of adults who are married, is (a) 33. 33 (b) 35. 14 (c) 31. 1 (d) 30 40. A garrison is provided with ration for 72 soldiers to last for 54 days. Find how long would the same amount of food last for 90 soldiers. If the individual ration is reduced by 10%? (a) 48 days (b) 72 days (c) 54 days (d) 126 days 41. In an examination paper of five questions, 5% the candidates answered all of them and 5% answered none. Of the rest, 25% candidates answered only one question and 20% answered 4 questions and 20% answered 4 questions.If 396 candidates answered either 2 question s or 3 questions, the number of candidates that appeared for the examination was (a) 800 (b) 1000 (c) 850 (d) 900 42. In a test, A scored 10% more than B and scored 5% more C. If C scored 300 marks out of 400, then A’s marks are (a) 310 (b) 325 (c) 350 (d) 360 43. A train crosses a bridge of length 150 m in 15 seconds and a man standing on it in 9 sec. The train is travelling at a uniform speed. Length of the train is (a) 225 m (b) 200 m (c) 135 m (d) 90 m 44. Arun and Bhaskar start from place P at 6 am and 7. 30am respectively and run in the same direction.Arun and Bhaskar run at 8 km/h and 12 km/h respectively. Bhaskar overtakes Arun at (a) 10:30 am (b) 9 am (c) 11:30 am (d) 11 am 6 SSC Combined Graduate Level (Main) Examination 2012 Question Paper 45. A man can row at 10 km/h in still water. If it takes a total of 5 hours for him to go to a place 24 km away and return, then the speed of the water current is (a) 2 km/h (b) 3 km/h (c) 2 km/h 1 (d) 1 km/h 46. A man started 2 0 min late and travelling at a speed of 1 times of his usual speed reaches his office in time. The time taken by the man to reach his office at his speed is (a) 40 min (b) 1 h 20 min (c) 1 h (d) 30 min 7. Divided Rs 15494 between A and B so that A’s share at the end of years may be equal to B’s share at the end of 11 years, compound interest being 20% per annum. Then A’s share is (a) Rs 8000 (b) Rs 9140 (c) Rs 9144 (d) Rs 9414 48. The principal amount which yields a compound interest of Rs 208 in the second year at 4% is (a) Rs 5000 (b) Rs 10000 (c) Rs 13000 (d) Rs 6500 49. An amount is invested in a blank at compound rate of interest. The total amount, including interest, after first and third years is Rs 1200 and Rs 1587 respectively. What is the rate of interest? (a) 10% (b) 3. 9% (c) 12% (d) 15% 50.The difference between compound and simple rates of interest on Rs 10000 for 3 years at 5% per annum is (a) Rs 76. 25 (b) Rs 76. 75 (c) Rs 76. 50 (d) Rs 76 51. A solid consist of circular cylinder with exact fitting right circular cone placed on the top. The height of the cone is h. If total volume of the solid is three times the volume of the cone, then the height of the circular cylinder is (a) 2 h (b) 2? 3 (c) 4 h (d) 3? 2 52. Water flows at a rate of 10 meters per in diameter. How long will it take to fill up a conical vessel whose diameter at the base is 40 cm and depth is 24 cm? a) 51 min 12 sec (b) 52 min 1 sec (c) 48 min 15 sec (d) 55 min 53. The three perpendicular distances of three sides of an equilateral triangle from a point which lies inside that triangle are 6 cm, 9 cm and 12 cm respectively. The perimeter of the triangle is (a) 42 2 cm (b) 45 3 cm (c) 52 2 cm (d) 54 3 cm 54. The area of a right-angled triangle is 24 cm2 and one of the sides containing the right angle is 6 cm. The altitude on the hypotenuse is 7 SSC Combined Graduate Level (Main) Examination 2012 Question Paper (a) 3. 6 cm (b) 4. 8 cm (c) 5. 2 cm (d) 12 cm 55 . A cost of cultivating a square field at a rate of Rs 135 per hectare is Rs 1215.The cost of putting a fence around it at the rate of 75 paise per metre would be (a) Rs 360 (b) Rs 810 (c) Rs 900 (d) Rs 1800 56. The area of a trapezium is 384 cm2. If its parallel sides are in ratio 3: 5 and the perpendicular distance between them is 12 cm, the smaller of the parallel sides is (a) 20 cm (b) 24 cm (c) 30 cm (d) 36 cm 57. The perimeter of the triangular base of a right prism is 60 cm and the sides of the base are in the ratio 5: 12: 13. Then its volume will be (height of the prism being 50 cm) (a) 6000 cm3 (b) 6600 cm3 (c) 5400 cm3 (d) 9600 cm3 58.If the length of a rectangular parallelepiped is 3 times of its breadth and 5 times of its height and its volume is 14400 cu cm, then area of the total surface will be (a) 2420 sq cm (b) 3320 sq cm (c) 4320 sq cm (d) 5320 sq cm 59. The capacities of two hemispherical bowls are 6. 4 litres and 21. 6 litres respectively. Then the ratio of their internal curved surface areas will be (a) 4 : 9 (b)2 : 3 (c) 2 : 3 (d) 16 : 81 60. Let A and B be two solid spheres such that the surface area of B is 300% higher than the surface area of A. The volume of A is found to be k% lower than the volume of B. The value of k must be (a) 85. (b) 92. 5 (c) 90. 5 (d) 87. 5 61. The ratio of the areas of the circum circle and the incircle of a square is (a) 2: 1 (b) 1 : 2 (c) 2 : 1 (d) 1 : 2 62. From a circular sheet of paper of radius 10 cm, a sector of area 40% is removed. If the remaining part is used to make a conical surface, then the ratio of the radius and the height of the cone is (a) 1 : 2 (b) 1 : 1 (c) 3 : 4 (d) 4 : 3 63. If the area of the circular shell having inner and outer radii of 8 cm and 12 cm respectively is equal to the total surface area of cylinder of radius R1 and height h, then h, in terms of R1 will be (a) 2 3 1 ? 30 7 (b) 2 1 ? 40 2 1 (c) 30 1 2 1 (d) 2 40 1 1 8 SSC Combined Graduate Level (Main) Examination 2012 Q uestion Paper 64. A well of radius 3. 5 m is dug 16 m deep. The earth removed is spread over an area of 400 m2 to form a platform. Height of the platform is (a) 1. 54 m (b) 154 m (c) 7. 7 m (d) 77 m 65. The ratio of the number of sides of two regular polygons is 1: 2. If each interior angle of the first polygon is 120o, then the measure of each interior angle of the second polygon is (a) 140o (b) 135o (c) 150o (d) 160o + 66. If x = (a) 0 , hen x2 – x – 1 is equal to (c) 2 (d) 5 + + + (b) 1 67. If x = , then the value of (a) 0 (b) 1 (c) + 3 is equal to (d) 68. The area of the region bounded by y = ?x? – 5 with the co-ordinate axes is (a) 25 sq units (b) 52 sq units (c) 50 sq units (d) 20 sq units 69. The real value of x, that satisfies the equation (a) 5 (b) 2 3 (c) ? + + = 5 + is (d) 4 a = 225, b = 227. + 70. Find the value of a3 + b3 + c3- 3abc when (a) 2304 (b) 2430 (c) 2034 (d) 2340 71.Number of solution of the equation (a) 0 (b) 1 (c) 2 ? + + = ? 2 is (d) 4 + + ? 72. If + (a) –2 = 1, then the value of (c) 2 is (b) ? 2 (d) ? 2 73. If ? = a + b, (where a, b are rationals), value of (a + b) is (a) –2 (b) 2 (c) 1 (d) –1 74. 232 – (2 + 1) (22 + 1)(24 + 1)(28 + 1)(216 + 1)) is equal to (a) 0 (b) 1 (c) 2 (d) 216 75. If the expression x + 809436 ? 809438 be a perfect square, then the value of x is (a) 0 (b) 1 (c) 809436 (d) 809438 76.If O is the orthocenter of the ? ABC and ? BAC =80o, then measure of ? BOC is (a) 80o (b) 100o (c) 120o (d) 90o 77. Two chords of a circle, of length 2a and 2b are mutually perpendicular. If the distance of the point, at which the chords intersect, from the centre of the circle is c (c< radius of the circle), then the radius of the circle is (a) a + b – c 2 + 2 – 2 2 + 2 – 2 (b) 2 (c) 2 (d) 2 78. Two concentric circles having common centre ‘O’ and chord AB of the outer circle intersect 9 SSC Combined Gradu ate Level (Main) Examination 2012 Question Paper he inner circle at points C and D. If distance of chord from the centre is 3 cm, outer radius is 13 cm and inner radius is 7 cm, then length of AC in cm is (a) 8 10 (b) 6 10 (c) 4 10 (d) 2 10 79. If PT is a tangent and AB is a chord of a circle and they intersect at the point P externally and PT = 2AP and AB = 18 units, then PT =? (a) 6 units (b) 9 units (c) 12 units (d) 15 units 80. In ? ABC, DE ? BC where DE intersects AB and AC at the points D and E respectively. If AD = 6 cm, DB = 12x – 6 cm, and AE = 2x cm and CE = 16 – 2x cm, then the value of x is (a) 6 (b) 4 (c) 2 (d) 8 81.If the sides of a quadrilateral ABCD touch a circle and AB = 6 cm, CD = 5 cm, BC = 7 cm, then the length of AD in cm is (a) 4 (b) 6 (c) 8 (d) 9 82. AB is the diameter of a circle with centre O and P is a point on it. If ? POA = 120o, then the value of ? PBO is (a) 30o (b) 50o (c) 60o (d) 40o 83. From the circumcentre I of the triangle ABC, perp endicular ID is drawn on BC, if ? BAC = 60o, then the value ? BID is (a) 75o (b) 60o (c) 45o (d) 80o 84. PQ is a chord of length 6 cm of a circle of radius 5 cm. tangents to the circle at P and Q meet at T. length of TP is (a) 4. 75 cm (b) 2. 5 cm (c) 3. 75 cm (d) 4. 25 cm 85. O is the centre of a circle. AC and BD are two chords of the circle intersecting each other at P. If ? AOB = 15o and ? APB = 30o, then tan2 ? APB + cot2 ? COD is equal to (a) 3 1 (b) 3 2 (c) 3 4 (d) 10 3 86. ? ABC is a right- angled triangle, where ? ABC = 90o. If AC 2 and AB – AC 2, then the value of cos2 A – cos2 C is (a) 1 5 (b) 5 (c) 2 1 (d) 5 3 87. At the foot of a mountain, the elevation of its summit is 45 o. After ascending 2 km towards the mountain upon an incline of 30o, the elevation charges to 60o. The height of the mountain is (a) ( 3 ? ) km (b) ( 3 + 1) km (c) ( 3 ? 2) km (d) ( 3 + 2) km 10 SSC Combined Graduate Level (Main) Examination 2012 Question Paper 88. The maximum value of sin8 + cos14 , for all real values of is (a) 1 (b) 2 (c) 1 2 (d) 0 ( + ) 2 ?1 1 2 89. If cos2 (a) 2 1 + sin2 = (b) 2 1 , 0o < < 90o, then tan = (c) (d) 90. If sin(10o 6’ 32†) = then the value of cos(79o 53’ 28†) + tan(10o 6’ 32†) is (a) (1+ 1 2 ) 1 2 (b) 1? 1 2 1 2 (c) 1 2 + 1 2 (d) 1 2 +1 1 2 91. If sin + cosec = 2, then the value of + is (a) 1 (b)1/2 (c) 2 92. tan tan tan (a) 1 2 (d) 0 tan ?sin2 = 1 (b) 2? 3 2 (c) 4 (d) 4 3 93. + = ? ? = , (a) 1 (b) 2 (c) 4 (d) 9 94. Number of integral values of x for which sin – (a) 5 (b) 4 (c) 3 (d) 2 , where 0o ? 90o, is 95. If x = sin + cos and y = sec + cosec , find y in terms of x. (a) + (b) (c) (d) + Directions (Q. Nos. 6-100) The following pie chart show the details of 1500 employees working in a company in various scales and also the break-up of 800 male employees across the scales. Study the graphs and answer the questi on. 11 SSC Combined Graduate Level (Main) Examination 2012 Question Paper Break-up of 1500 employess across the scales VII 8% I 22% Break-up of 800 male employees across the scales VII 10% VI 14% V 12% IV 10% VI 9% V 12% IV 11% I 24% II 15% III 19% II 18% III 16% 96. How many females are working in scale V? (a) 180 (b) 144 (c) 96 (d) 84 97. The male-female ratio working in scale VII is () 1: 2 (b) 2: 1 (c) 2: 3 (d) 3: 2 98.The scale(s) in which the number of working females is the same are (a) I and VI (b) I and III (c) III and VI (d) only III 99. The number of scales in which the female workface is less than the average female workface working in any scale is (a) 5 (b) 2 (c) 3 (d) None of these 100. Had the total number of employees working in the company been 1600 (800 male, 800 female) and pie charts of break-up across the scales the same, the percentage increase or decrease of female workforce in scale VII is (a) 10% decrease (b) 15% increase (c) 20% decrease (d) 20% increase 12

effects of Television vilolence on children essays

effects of Television vilolence on children essays The Effects of Television Violence on Children Television violence without doubt effects and influences children. Television violence effects children's development and makes them more aggressive. Children cannot distinguish between the real world and the television world, which makes them more susceptible to the violence on television. It is up to the parents and the television stations to monitor television more closely and restrict violence from children. According to Websters Dictionary, violence is "rough or injurious physical force, action or treatment, unjust or unwanted exertion of force or power". In today's society there is enough violence in every day living that television violence is not necessary, 80 percent of Americans feel that television violence is harmful to our society and there is too much of it in our entertainment (Zuckerman 64). Violence comes in many forms on television. The violence that will be discussed in this paper are violence's such as; murders, muggings, rapes and random property destruction (Katz 113). Violence can be viewed in cartoons, soap operas and prime time shows. Statistics have proven that children view too much television and too much violence. The average child sees 8,000 murders and 10,000 acts of violence before finishing elementary school and by the age of eighteen a youngster will see 20,000 acts of murder and 40,00 acts of violence ( Weir 14). Television violence is definitely on the up-rise. Violence acts on television in the past decade had increased eight percent, where as educational programs have only increases three percent, which means that the amount of violent programming and viewing violent programming is twice that of educational programs (Katz 113). Our society should be concentrating on education our children, not scarring them with violence. One thousand studies have been published world wide on violent entertainment and most experts now agree th...

Free Essays on Jacksonian Democracy

During Andrew’s Jackson presidency from 1829-1837 many changes in our government took place. During his reign he reduced national debt, became the first president to ride a train, and he extended the right to vote to all males who didn’t own land. This caused a major debate in our great country because suddenly all white men could help determine our nations future. Arguments both pro and con were brought up in the states. To determine the validity of these arguments one must look at who said the quote and when it was said. These arguments came to center stage in New York where a proposal was written to drop the property requirement for voting. The state constitution revision committee chair, Nathan Sanford, supported this proposal. He asserted his position in a report where he states that â€Å"the only qualifications to [to vote] seem to be the virtue and morality of the people.† On the other hand the chief justice of New York’s highest court, state s, â€Å"The tendency of universal suffrage is to jeopardize the rights of property.† These two quotes show the vast differences of opinion during Jackson’s presidency. In the early 1830s a french sociologist, Alex de Tocqueville traveled to America observed American society. Eventually he wrote a book Democracy in America. In this work he praises the American people for their talents as abilities while at the same time criticize the people in government saying† The race of American statesmen has evidently dwindled†¦Ã¢â‚¬  (Doc 3) Tocqueville wonders why the best men aren’t always placed at the head of the government and endorses universal suffrage in America. He also states â€Å"Democracy is not only deficient In that soundness of judgment which is necessary to select men really deserving of its confidence but has neither the desire nor the inclination to find them†¦Ã¢â‚¬  He is telling the reader about American indifference to who gets elected and he is making a p... Free Essays on Jacksonian Democracy Free Essays on Jacksonian Democracy Democracy in Jackson’s Administration In 1828, democracy changed with the election of Andrew Jackson for president. This democracy’s philosophy was that all governing that was necessary would be done directly by the people of America. Jacksonian Democrats viewed themselves as the guardians of the United States Constitution, political democracy, individual liberty, and equality of economic opportunity. This self-serving view was exceedingly hypocritical, as shown through the National Bank, the Nullification crisis, and the Native American’s Trail of Tears. Andrew Jackson decided not to recharter the National Bank in 1832, stating that it was for the good of economic equality. This started what is known as the â€Å"Bank War.† In his veto message (Doc B), Jackson maintained that he was protecting United States citizens by not passing the recharter. His belief was that the Bank was monopolistic and therefore unconstitutional. However, the bank was declared constitutional in McCulloch vs. Maryland in 1819. He felt that this â€Å"monopoly† would favor only the wealthy and because it only used hard money, would devastate the poorer citizens in America. This is where his reasoning that it was not economically equal was derived from. Although some aspects of his argument were accurate, he failed to recognize the overall benefits of the National Bank, pointed out by Daniel Webster in his reply to the veto. (Doc C) The National Bank issued stable bank notes, expanded the country’s money supply, and produced an abunda nt amount of sound currency. The government benefited because it was a safe place to store, transfer, and distribute currency. Jackson destroyed the Bank, causing class animosity, such as the riots in New York and Philadelphia described by Philip Hone, a businessman and Whig. (Doc E) The controversy over nullification produced a crisis in 1832 over the Tariff of 1828. South Carolina, angry because of the... Free Essays on Jacksonian Democracy During Andrew’s Jackson presidency from 1829-1837 many changes in our government took place. During his reign he reduced national debt, became the first president to ride a train, and he extended the right to vote to all males who didn’t own land. This caused a major debate in our great country because suddenly all white men could help determine our nations future. Arguments both pro and con were brought up in the states. To determine the validity of these arguments one must look at who said the quote and when it was said. These arguments came to center stage in New York where a proposal was written to drop the property requirement for voting. The state constitution revision committee chair, Nathan Sanford, supported this proposal. He asserted his position in a report where he states that â€Å"the only qualifications to [to vote] seem to be the virtue and morality of the people.† On the other hand the chief justice of New York’s highest court, state s, â€Å"The tendency of universal suffrage is to jeopardize the rights of property.† These two quotes show the vast differences of opinion during Jackson’s presidency. In the early 1830s a french sociologist, Alex de Tocqueville traveled to America observed American society. Eventually he wrote a book Democracy in America. In this work he praises the American people for their talents as abilities while at the same time criticize the people in government saying† The race of American statesmen has evidently dwindled†¦Ã¢â‚¬  (Doc 3) Tocqueville wonders why the best men aren’t always placed at the head of the government and endorses universal suffrage in America. He also states â€Å"Democracy is not only deficient In that soundness of judgment which is necessary to select men really deserving of its confidence but has neither the desire nor the inclination to find them†¦Ã¢â‚¬  He is telling the reader about American indifference to who gets elected and he is making a p...

Free Printable Science Worksheets and Coloring Pages

Free Printable Science Worksheets and Coloring Pages Science is usually a high-interest topic for kids. Children love to know how and why things work, and science is part of everything around us, from animals to earthquakes, to our own bodies. Capitalize on your students interest in the hows and whys of the world with these  free printable science worksheets, activity pages, and coloring pages on a variety of science-themed topics. General Science Printables No matter what topic youre studying, its never too early to begin teaching children to document their science lab findings. Teach your child to make a hypothesis (an educated guess) about what he thinks the result of the experiment will be and why. Then, show him how to document the results with these  science report forms.   Even young children can draw or photo journal their scientific explorations.   Learn about the men and women behind todays science knowledge base. Use a basic  biography lesson plan  to learn about any scientist or  try these  Albert Einstein printables  to learn about one of the most famous scientists of all time. Spend some time exploring the tools of a scientists trade with your students. Learn about the  parts of a microscope  and how to care for one. Study some fascinating general science principles that we use every day - often without even realizing it -  such as how  magnets  work,  Newtons Laws of Motion, and what  simple machines  are. Earth and Space Science Printables Our earth, space, planets, and the stars are fascinating to students of all ages. Whether you have an astronomy buff or a budding meteorologist, the study of life on our planet - and in our universe - and how it all connects is a topic worth delving into with your students. Dig into  astronomy and space exploration  or enjoy a set of  solar system printables  with your future astronomer, astronaut, or backyard stargazer. Study the  weather  and natural disasters such as  earthquakes  or  volcanoes. Discuss with your children the types of scientists who study those fields such as meteorologists, seismologists, volcanologists, and geologists. Geologists also study rocks. Spend some time outdoors creating your own rock collection and some time indoors learning about them with free  rocks printables. Animal and Insect Printables Kids love learning more about the creatures they can find in their own back yard - or the local zoo or aquarium. Spring is a wonderful time to study creatures like  birds  and  bees.   Learn about the scientists who make a living studying them such as  lepidopterists and entomologists. Schedule a field trip to chat with a bee keeper or visit a butterfly garden.   Visit a zoo and learn about mammals such as  elephants  (pachyderms) and  reptiles  such as alligators and crocodiles. If your student is really fascinated by the reptiles, print off a  reptiles coloring book  for him to enjoy when you get home.   See if you can arrange to talk to a zookeeper about the different animals in the zoo. Its also fun to make a scavenger hunt of your trip by finding an animal from each continent or one for each letter of the alphabet. You may have a future paleontologist on your hands. In that case, visit a museum of natural history so that she can learn all about dinosaurs. Then, capitalize on that interest with a set of free  dinosaur printables. While youre studying animals and insects, discuss how the seasons -  spring,  summer,  fall, and winter  - affect them and their habitats. Oceanography Oceanography is the study of the oceans and the creatures that live there. Many children - and adults - are fascinated by the ocean because there is still a great deal of mystery surrounding it and its inhabitants. Many  of the animals who call the ocean their home are very unusual-looking. Learn about the mammals and fish that swim in the ocean, such as dolphins, whales, sharks, and seahorses. Study some of the other ocean-dwelling creatures, such as: CrabsJellyfishLobstersManateeOctopusSea TurtleStarfish You may even want to dig deeper and learn more about some of your favorites, like dolphins or seahorses. Take advantage of your childs fascination with science-themed topics by incorporating fun printables and hands-on learning activities into your science studies.   Updated by Kris Bales

Complete Computer Network Infrastructure for a Real or Ficticious Research Paper

Complete Computer Network Infrastructure for a Real or Ficticious Business - Research Paper Example After defining the specification, we will address network devices along with switch and router deployment. Moreover, we will define all the associated servers that will play a vital role in synchronizing data with remote offices in this scenario. Furthermore, a proposed network diagram will be represented for each site i.e. site 1 and site 2. Sub netting will play a dominant role in breaking down global IP addresses into local IP addresses for each node on the network. For the WAN architecture, we will discuss the technologies, protocols and services that will be used for connecting these sites together. Moreover, for maintaining and monitoring the network, we will discuss network security features that will be implemented in this proposed network. The RADIUS access server will provide synchronization of data between both sites operating on a Virtual Private Network. In addition, Domain name Service will also be discussed. 2 Introduction Organizations associated with health care need s to acquire up to date technological trends in delivering patient care at the optimal level. Medical information systems developed for supporting health care, facilitate organizations to align with best practices and quality and to make these health organizations successful in the market. However, acquiring and maintaining computer networks can be a difficult task along with its alignment with the goals and objectives of the organization. Moreover, along with the alignment with organizational objectives, involvement of all stakeholders in the implementation of a network is vital for understanding the purpose and benefits. Likewise, customization of network design is a requirement for supporting organizational goals and objectives, which can be a complex task. 3 Network Architecture 3.1 Topology We will apply star topology, as the network design will follow a centralized server / client architecture. Star topology will provide centralized administration and configuration of all the nodes on the network. Moreover, star topology initiates low broadcasts on the network, consequently, consuming low bandwidth and at the same time making the network capacity on optimal levels. 3.2 Workstations The minimum hardware specifications of the workstations that will be installed in the current scenario are: System Specification Processor Intel Dual Core E5400 2.7GHZ (2MB cache – 800MHZ FSB) Motherboard Intel DG41RQ (LGA775-SND+AGP+GIGA LAN-800MHZ FSB) Memory 1GB DDRII (800 Bus) Hard drive 320GB 3.5" SATA-II 7200RPM Optical drive DVD Drive 16 X Chassis Thermal HT Support 3.3 Network devices Network devices are the objects for any network. The network functionality relies on the network devices .The dependability of the network devices emphasizes on the requirements of the organization. For example, an organization dealing with 3D animation and rich media may require a Gigabit Ethernet rather than Fast Ethernet. This is because the subordinates share the animated data among themselves for various purposes. The 3D animation contents are large in volume and require gigabit Ethernet for moving files at a high speed within the network. Hospitals may share high quality medical images with remote offices, resulting in a consideration of bandwidth requirement of the Internet or site to site VPN as well. 3.4 Switch Implementation Fast Ethernet switches will be implemented instead of hubs. Switches are more powerful and intuitive as compared to hubs.

Account for plagiarism in English speaking countries Essay

Account for plagiarism in English speaking countries - Essay Example Make no mistake that the quotation encourages plagiarism. On the contrary, it promotes everyone to be original in their ideas. But could this in reality be practiced especially in academic writing? This may be ideal in fictional writing but academic writing profusely begs to differ. Being novel in every idea and thought without having been influenced by anyone else is something next to impossible particularly in this day and time when almost everything has been a derivative of another. The need to cite is an important part of academic writing. In order to provide a comprehensive and logical argument to support a thesis, the writer must be able to learn the value of researching pertinent materials from authoritative sources that offer information. These people have dedicated a great amount of time in their accumulated mastery base on derived facts. They serve a foundation or inspiration that catapults an idea into its shape which could either strengthen it or show its weaknesses. Thus , â€Å"A writer plagiarises when he or she presents another writer’s unique work as a product of his or her own knowledge and/or imagination† (Johns and Keller, 2005, p.1). This has become a prevalent problem especially in the four corners of educational institutions. Plagiarism has been on the rise due to societal pressures, poor time management and the internet. Societal pressures play a major role in enticing students to plagiarise. A great number of students feel justified in plagiarising because they feel the additional pressures imposed by teachers without much help makes completing assignments adequately impossible (Sterngold, 2004). Often, a student may be required to finish an assignment or something like a major requirement such as a term paper in more than one subject simultaneously. The need to finish by the set deadlines provokes them to make the wrong choices. These papers could make or break their grades and instead of failing to turn in an output, they would rather plagiarise in the hopes that they could get away with it. This is a habit that is shared by many students where they all know what each other is up to but there is a standing consensus to keep mum about it and go with the pack. Teachers, on their part, have different approaches to how they treat plagiarism. There are those who react indifferently especially in the lower level, giving the students a sense of impunity that they have become desensitized to knowing the difference. Then there are those who approach it with utter severity that they implement a strict regulation through verbatim analysis. This happens even without the teacher clearly setting forth the criteria and the measures on how to properly acknowledge a source. This generates hostility in students who demand justification (Hayes and Introna, 2005). Entering the university is an important goal for students who have been inculcated with the indispensability of tertiary education by their parents. Earning a bachelor’s degree, preferably in a refutable university, is the ultimate dream that parents have for their children. Among the reasons found by Devlin and Gray in their study why students plagiarise is ‘pressures,’ this they elaborate take many forms such as time, stress, family and societal such that one student remarks, â€Å"Parents nowadays expect their children to go to uni, whether they [i.e. the child] want to or not† (2007, n.p.). They are in turn pressured to fulfil their parent’s wishes and pressure themselves to avoid disappointing their family since parents see it a reflection of their parenting if their children fail to enter a university (ibid). Time management is an insistent problem that everyone has to face. In the urban jungle

Anderson County School District 3 Election Research Paper

Anderson County School District 3 Election - Research Paper Example Many may wonder what kind of job or task exactly the candidate is up for. Members of the Board are expected to consign themselves to regular turnout at Board meetings, which entails 3 half-day meetings and 1 full-day meeting a year at the school. It is expected that members serve on at least one Board committee, working group or occasional task force during their term of office. Board committees normally meet 3-4 times a year at the school. Members are encouraged to attend other events and activities that are held by the school, including Graduation Day in mid-September. Members may also be required to attend occasionally special activities to be held at schools, such as audit visits by outside agencies. The role is expected to require an average of 12 days annually, in addition to reading and travelling time. This is just but a tip of what the post entails. The school board exists to ensure that the mission of the school is attained. To do this, members of the Board need to keep themselves informed of progress in the school, higher education, and most significantly, the performance of the school. Members of the Board are expected to participate fully in the development of the school’s corporate and operating plans and to ensure proper allocation and use of the school’s resources in meeting the objectives of those plans is assured. Curiosity might be on the rise on what exactly Danny Davis and Ray Graham are contending for, or rather why each found it within their means to vie for an assistant governor’s position. Well, it is nothing other than to assist in the Governing Board of Anderson School District Three. It is rather clear to note what this means as the election winner had a straight seat in the Board Governing Anderson School. This would earn him control, which is noted as one of the key aspects that candidates always go for in a given election (Parker 29) In brief highlight of the candidates for these election posts comes the first candidate Danny Davis. Danny Davis is an IT technician, currently working as a transportation manager and a board member of the same school at present. On the other hand, our second man Ray Graham works in the Anderson County Sheriff’s Investigation Department. By this time, it might be true to conclude that Ray Graham commands larger grounds than his mate, and this might end up playing a vital role in the outcome of the elections. Both Danny and Ray are renowned members of the society and either of them can make a good governing assistant in the school board. This election is undoubtedly of great importance. First and foremost, each candidate has outspokenly laid out his points and what he intends to manifest once elected to the position. Just to point out one of each, Ray Graham intends to introduce t he fair treatment of all kids in the district, in an equal manner, as opposed to fair treatment for a few as it may be said to be as of now. He also promised to ensure equal opportunities for all students in matters and issues concerning them. Ray Graham also promises to move Anderson County School District forward in matters pertaining to resources, teachers and the faculty’s need to educate their children at higher levels, allowing them to further their opportunities for success at completion of their education. Danny Davis, on his part, maintains that with the election outcome in his favor, he

Conversation between countries Essay Example | Topics and Well Written Essays - 1250 words

Conversation between countries - Essay Example People adhering to cosmopolitanism and its different ideas are known as cosmopolites. Kwame Anthony Appiah uses the term â€Å"cosmopolitanism† to describe people with different abilities, who come from different backgrounds to get along with each other in a globalized and deeply connected world, an ability he likens to having conversations. Appiah also discusses cosmopolitanism as a rubric for social change, where the practice of people getting along together, conversing, is a more effective agent for change than reason or arguments. He writes, â€Å"Conversations across boundaries of identity; whether national, religious, or anything else, begin with the sort of imaginative engagement you get when you read a novel or watch a movie or attend to a work of art that speaks from some place other than your own† From the context in question about the subject matter being the dispute of the Diaoyu islands.US senator John McCain accused china for encroaching on Japanese territ ory claiming that â€Å"Diaoyu is Japanese territory† this statements have elicited mixed reactions from different quarters on the issue, with, the Chinese foreign ministry spokesperson stating that these islands are Chinese territory and those claiming it are unwarranted to do so. The Chinese has called upon United Nations officials to halt their irresponsible remarks to prevent the situation from escalating any further. According to Kwame’s cosmopolitanism concept, is a critic of boundaries and claims we should abandon these boundaries and live like the citizens of the world. The islands dispute is a pointer that indeed Kwames argument is valid as this can stop the crisis on boundaries like the one on Diaoyu islands. It stated that these islands are part of the Chinese territory from historical maps and scientific data and it is evident that it was Chinese territory. Kwameh states that â€Å"There’s a sense in which the concept is not of the answer but of the problem† (15). Thus cosmopolitanism by itself is not a solution but it’s that aspect of people understanding each other. Conversation doesn’t have to lead to an agreement or consensus about anything or everything, especially not values; it’s enough that it helps people get used to one another (30). In line with the United Nations convention on the law of the sea Chinas possession of the island is indisputable. This casts a lot of doubt on the Japanese siege of the island and on grounds of its strategic location. But even more inviting is the involvement of the United States in the whole dispute it’s thus seen as the US is having a hand on the claims by Japan bearing in mind their close ties. The dispute finds the U.S in a closed fit due to its foreign policy to strategies though; it has overtime maintained an unbiased position. So as not to provoke China’s claim of the island; this again brings to the foe kwamehs’s principle of global ization. It shows how boundaries can lead to more conflicts bearing in mind the two nations are super powers. Appiah admits that conversation about boundaries may be delightful or vexing (19). Vexing is the core thing in this context where this dispute can potentially lead to a big diplomatic row among the states involved. Though on a greater probe its evident Mc Cain’s statements are to serve his own interest by settling political scores back home in America. This brings attention to kwamehs claim when he quotes that; what

Oliver Stone films representing the war Research Paper

Oliver Stone films representing the war - Research Paper Example 1. JFK: This film portrays the events leading to the unfortunate assassination of President Kennedy. It is assumed that this film is based on two books from other authors exploring the same issue. But while the books attracted acclaim, Stone’s JFK instantly got slathered with harsh criticism. Furious historians and critics argued that Stone’s carefree attitude with important historical facts contributed to creation of a highly twisted picture. However, the way JFK later gained confidence and amassed many Academy nominations raises embarrassing questions about the angry criticism published in American newspapers upon the movie’s release. The way Jim Garrison in JFK investigates the assassination from a completely different perspective implying an infamous scheme within the government responsible for Kennedy’s death actually ended up interesting people far more than any book ever did written on the same subject. In fact, the magnitude of excitement felt by people who read books is dwarfed by the magnitude of thrilling suspense experienced by people who viewed the movie, in reference to how the picture reveals different ways by which powerful people use authority to manipulate events (Rendall). The fact that movies can speak louder than words is made emphatic by the way historical events are intelligently portrayed in JFK.

Conversation between countries Essay Example | Topics and Well Written Essays - 1250 words

Conversation between countries - Essay Example People adhering to cosmopolitanism and its different ideas are known as cosmopolites. Kwame Anthony Appiah uses the term â€Å"cosmopolitanism† to describe people with different abilities, who come from different backgrounds to get along with each other in a globalized and deeply connected world, an ability he likens to having conversations. Appiah also discusses cosmopolitanism as a rubric for social change, where the practice of people getting along together, conversing, is a more effective agent for change than reason or arguments. He writes, â€Å"Conversations across boundaries of identity; whether national, religious, or anything else, begin with the sort of imaginative engagement you get when you read a novel or watch a movie or attend to a work of art that speaks from some place other than your own† From the context in question about the subject matter being the dispute of the Diaoyu islands.US senator John McCain accused china for encroaching on Japanese territ ory claiming that â€Å"Diaoyu is Japanese territory† this statements have elicited mixed reactions from different quarters on the issue, with, the Chinese foreign ministry spokesperson stating that these islands are Chinese territory and those claiming it are unwarranted to do so. The Chinese has called upon United Nations officials to halt their irresponsible remarks to prevent the situation from escalating any further. According to Kwame’s cosmopolitanism concept, is a critic of boundaries and claims we should abandon these boundaries and live like the citizens of the world. The islands dispute is a pointer that indeed Kwames argument is valid as this can stop the crisis on boundaries like the one on Diaoyu islands. It stated that these islands are part of the Chinese territory from historical maps and scientific data and it is evident that it was Chinese territory. Kwameh states that â€Å"There’s a sense in which the concept is not of the answer but of the problem† (15). Thus cosmopolitanism by itself is not a solution but it’s that aspect of people understanding each other. Conversation doesn’t have to lead to an agreement or consensus about anything or everything, especially not values; it’s enough that it helps people get used to one another (30). In line with the United Nations convention on the law of the sea Chinas possession of the island is indisputable. This casts a lot of doubt on the Japanese siege of the island and on grounds of its strategic location. But even more inviting is the involvement of the United States in the whole dispute it’s thus seen as the US is having a hand on the claims by Japan bearing in mind their close ties. The dispute finds the U.S in a closed fit due to its foreign policy to strategies though; it has overtime maintained an unbiased position. So as not to provoke China’s claim of the island; this again brings to the foe kwamehs’s principle of global ization. It shows how boundaries can lead to more conflicts bearing in mind the two nations are super powers. Appiah admits that conversation about boundaries may be delightful or vexing (19). Vexing is the core thing in this context where this dispute can potentially lead to a big diplomatic row among the states involved. Though on a greater probe its evident Mc Cain’s statements are to serve his own interest by settling political scores back home in America. This brings attention to kwamehs claim when he quotes that; what

CCNA Basic (Final Assignment) Essay Example | Topics and Well Written Essays - 1000 words

CCNA Basic (Final Assignment) - Essay Example 4. Define redistribution filters, if desired. 5. Enable redistribution, if you defined redistribution filters. 6. Modify default global and port parameters as required. 7. Modify OSPF standard compliance, if desired To enable OSPF enter enable ospf and respond to the prompts: OSPF Config>enable ospf Estimated # external routes[0] 200 Estimated # OSPF routers [0] 60 OSPF Config>set area Area number [0.0.0.0] 0.0.0.0 Authentication Type (0:NONE, 1:SIMPLE, 2:CRYPTOGRAPHIC) [0] 1 Is this a stub area [No]: OSPF Config>set interface Interface IP address [0.0.0.0] 172.16.100.030 Attaches to area [0.0.0.0] 0.0.0.0 Retransmission Interval (in seconds) [5] Transmission Delay (in seconds) [1] Router Priority [1] Hello Interval (in seconds) [10] Dead Router Interval (in seconds) [40] Type Of Service 0 cost [1] 5 Authentication Key Retype Auth. Key Message Digest Key ID [0] MD5 Key Retype MD5 Key Override the default OSPF interface-type [No]: y OSPF interface-type override (1=broadcast, 3=NBMA, 5=point-to-multipoint) [0] 3 Poll Interval [120] Forward multicast datagrams [Yes]: Forward as data-link unicasts [No]: OSPF Config>set virtual-link Virtual endpoint (Router ID) [0.0.0.0] 10.10.10.1 Link's transit area [0.0.0.1] Retransmission Interval (in seconds) [10] Transmission Delay (in seconds) [5] Hello Interval (in seconds) [30] Dead Router Interval (in seconds) [180] Authentication Key Message Digest Key ID [0] Message Digest Key Retype Message Digest Key (c) Configure manual summarization for 10.201.1.0/24, on serial 2, using EIGRP - using an example of one default route hostname branch1 ! interface Serial2 ip address 10.201.1.0 255.255.255.0 ... router eigrp 10 redistribute static metric 56 100 255 1 255 network 10.201.0.0 ! ip classless ip route 0.0.0.0 0.0.0.0...This will allow you to have 32 subnets (25). After using the five bits for subnetting, you are left with 11 bits for host addresses. Therefore, this will allow each subnet to have 2048 host addresses (211), 2046 of which could be assigned to devices. (d) Configure DHCP using a pool called 'ISP' containing 10.10.0.0/16. Include the default gateway of 10.10.0.01 and a DNS server at 10.10.0.5. Exclude the range of IP address from 10.10.0.1 to 10.10.0.15 Edit the /etc/dhcpd.conf file to configure DHCP service. In our setup, the server has IP address 10.0.0.1 and provides IP addresses up to 253 clients. Configure /etc/dhcpd.conf according to your environment:

Ways of Reading Essay Example for Free

Ways of Reading Essay The Dark Night of the Soul The Dark Night of the Soul by Richard E Miller has been written with a main point always in mind, that reading and writing has very powerful influences people and their imagination but, the act of reading and writing is not being utilized as much in the modern world. Richard has created an essay that proves his point by taking five very different short stories and giving each a twist that helps the reader see the power of reading. As the reader is chronologically going through the essay he or she is given many possible meanings of the essay. The meaning and the relationships that the stories share are not revealed until the last page of the essay. The essay begins with the story of two distraught high scholars named Eric Harris and Dylan Klebold.In this story Miller really shows us the power of imagination. The feeling of being lonely drove them to the point of becoming violent. The boys went on a rampage. Miller also uses the example of Chris McCandless to further prove his point. McCandless threw away his life and went out on a journey to live by himself in the wilderness because of the stories he read. Miller wants to transmit to us that reading and writing have very powerful influences in people and their imagination, but he believes the power of reading and writing is not being utilized as much in the modern world. Through the examples he presents in the Dark Night of the Soul he tries to show different perspectives of reading and writing so that the reader realizes that both are really powerful realities which can have a big influence in someone’s life.

Two Step Extraction Of Pyrethrins From Pyrethrum

Two Step Extraction Of Pyrethrins From Pyrethrum The experimental determination of the concentration and yield of pyrethrins from chrysanthemum pyrethrum flower is usually carried out with chromatographic techniques; and accordingly, a lot of methods have been developed over the years [Wang et.al, (1997)]. These include high performance liquid chromatography (HPLC) [Todd et.al, (2003); Essig and Zhao, (2001b)], gas chromatography (GC) [Essig and Zhao, (2001a)] and supercritical fluid chromatography (SFC) [Wenclawiak and Otterbach, (1999)]. GC was chosen for convenience in this study. The first-step involves using n-hexane as solvent to extract the pyrethrins from the solid sample (grounded and unsieved with particles size of about 30 meshes), and then the second-step, a purification step involves the use of supercritical carbon dioxide as solvent to obtain the pyrethrins from the crude hexane extract (CHE). The hexane extractions (100g sample size), in a water bath at controlled temperatures and vigorous stirring, generated pyrethr ins concentrations varying from 69.85 95.50mg/ml and yields of 0.85 3.76% of the dry weight. Extraction efficiencies under several conditions were investigated and the optimum extraction condition was 400C in 4hrs. Compared with the product from the factory, several undesirable components exist in the CHE. The SFE was carried out with a self built unit (extraction vessel of 120ml) with a sample size of 40ml of CHE. Concentrations of 57.25 93.79mg/ml and yields (after the second extraction) of 0.99 2.15% were obtained; with the optimum condition being 350C at a pressure of 20MPa in 2hrs. Compared with the product from the factory, this sample contains two extra components (Tricosane and Tetracosane) also used in insect control. Key words: Solvent extraction; supercritical carbon dioxide; pyrethrins; two-step extraction; crude pyrethrins extract Introduction Pyrethrum flowers are from the Chrysanthemum genus and are known commercially as painted daisies, painted ladies, buhach, chrysanthemum cinerariaefolium, ofirmotox, insect powder, Dalmatian insect flowers, or parexan. It is believed to be recorded first in Dalmatia [Visiani, (1842-1852)]. However, others contend that its insecticidal activity was first proven by Antun Drobac (1810-1882) [Bakaric, (2005)]. Yet there are claims that it was first identified as having insecticidal properties around 1800 in Asia [Jeanne, (2009)]; and that the Crushed and powdered plants were used as insecticides by the Chinese as early as 1000 BC [Amrith, (2004)]. The flower contains about 1-2% pyrethrins by dry weight, but approximately 94% of the total yield is concentrated in the seeds [Casida and Quistad, (1995)]. The chemical structure of the active ingredients, pyrethrins I and pyrethrins II was identified in 1924 [Chandler, (1948); Coomber, (1948)]. Kenya is the worlds main producer today with more than 70% of the global supply [Jones, (1973)]. The natural active ingredients are referred to as Pyrethrins; consisting of cinerin I, jasmolin I, pyrethrin I, cinerin II, jasmolin II and pyrethrin II. The first three (chrysanthemic acid esters) are referred to as pyrethrins I (PYI), and the rest (pyrethric acid esters) as pyrethrins II (PYII) [Essig and Zhao, (2001a)]. Pyrethrins, though insoluble in water, are soluble in many organic solvents [WHO, (1975)]. They are non-volatile at ambient temperatures; non-toxic to mammals and other worm-blooded animals; highly unstable in light (photodegradable); biodegradable; but toxic to aquatic animals [Todd et.al, (2003); Chen and Casida, (1969); WHO, (1975)]. Their usage is mainly in biological crop protection; domestic insecticides [Gnadinger, (1936)]; and the formulations of synthetic pyrethroids [Todd et.al, (2003)]. Although pyrethrins are soluble in a number of organic solvents (benzene, hexane, petroleum ether, alcohol, acetone, meth anol, chlorinated hydrocarbons, etc) other considerations (practical, economic and environmental concerns) limit the usage. These considerations reduce the choices to just few. One of the qualities of Hexane in extracting pyrethrins is its ability to effectively dissolve the active ingredients minus contaminants. Another is that its removal from the concrete is achieved at lower temperatures; limiting degradation due to prolonged heating. Again, its low boiling point is a needed quality and it can be recycled, reducing the weight of the concrete. Above all, it is inexpensive, considered environmentally friendly, less toxic, non-corrosive, and non-reactive; traits which make it the dominant solvent adopted, especially for processing plant (biological) materials (products) which are often thermally labile, lipophilic, and non-volatile and are required to be kept and processed at around room temperatures. Carbon dioxide (CO2) has a critical temperature of 31oC which makes it particular ly an attractive medium for these kinds of tasks. Though other supercritical fluids (SCFs) show critical temperatures in this critical state and can be adapted as solvents, they are often difficult to handle and obtain in pure state, may be toxic, explosive or ecologically unsafe. Supercritical carbon dioxide (Sc-CO2) is by far, the most extensively used due to its non-toxic, inert and non-flammable nature. It is also natural, inexpensive, plentiful, non-toxic and inflammable and generally environmentally accepted [Schneider et.al, (1980)]. Its most important properties are enhanced density, viscosity, diffusivity, heat capacity and thermal conductivity. Higher densities contribute to greater dissolution of compounds while low viscosities enable easy penetration into samples and facilitation of flow of extracted (targeted) molecules from the source materials with fewer hindrances [Dunford et.al, (2003)]. Diffusivity offers easy and faster transport through samples; hence offers bett er extraction strengths; and dissolved ingredients are also easily separated from the supercritical solvent by drop in pressure [Fattori et.al, (1988)]. Sc-CO2, for the above and many reasons used as solvent in extraction saves both time and money while retaining overall extraction precision and accuracy with high purity and healthy products that are of excellent quality [Raventos et.al, (2002); Mohamed and Mansoori, (2002)]. Expectedly, a lot of research is now focused on the extractions of plant materials with supercritical carbon dioxide due primarily to the global growing solvent (organic) regulations and more importantly, the economic benefits (in terms of low operating temperatures; faster extractions and easier purifications, and of course better product quality). Stahl and Schutz [Stahl and Schutz, (1980)] extracted pyrethrins with CO2 and proposed that in the 20 °C to 40  Ã‚ °C temperature range decomposition (usually associated with pyrethrins extraction) does not occu r. Sims patented in the US, an extraction of pyrethrins using liquid carbon dioxide [Sims, (1981)] and Wynn and others patented using Sc-CO2 [Wynn et al. (1995)]. Wenclawiak and coworkers compared extracts obtained with ultrasonic (USE) and Soxhlet extractions (SEX); with hexane and Sc-CO2 extractions (SCE) and reported that direct extraction with SCE gave better pyrethrins content [Wenclawiak et.al, (1995)]. 2. 0. Experimental 2.1. Materials and Chemicals Grounded chrysanthemum (light green with a characteristic smell) sample and two pyrethrum concretes (yellow) were obtained from Yunnan Juxiang Natural Plant Products Company in China. The pyrethrins content of the concretes was claimed to be 50.0% (29.50% PYI and 20.50% PYII) and 85.15% (46.33% PYI and 38.82% PYII). Six individual standard solutions (using standard addition method) were prepared (from the 85.15% PY concrete-higher content, less impurities) for standardization of the analytical method. Analytical grade hexane (97.0%) and Ethanol (99.7%) were purchased from Sinopharm Chemical Reagent Co. Ltd in China, and used directly without any pre-treatment. CO2 (99.0 %) gas was supplied by Xin Hongli Gas Company also in China. 2.2. Experiments Three different experiments were performed: To establish the standard/calibration curves for determining the components, To implement hexane extraction and determine the yield of total PY in the grounded sample, and To implement SFE and determine the yield of total PY in the CHE. 2.3. Establishing Standard Curves The GC (Agilent) conditions used for establishing the standard curves are as follows: split injector with 20:1 split ratio at 2500C; Nitrogen as carrier gas at 1.6mL/min  ¬Ã¢â‚¬Å¡ow rate; injection volume of 0.1  µL; temperature program started at 1800C, kept for 11 minutes, heated at 100C/ min to 2000C, kept for 8 minutes, heated to 210 0C at 100C/min, kept for 18 minutes, then heated to 2450C at 30 0C/min, maintained for 4 minutes; FID detector; HP-5 Column, 30 mm 0.32 mm id., 0.25  µm  ¬Ã‚ lm thickness. This column was chosen because it gives the best resolution, identi ¬Ã‚ cation and quanti ¬Ã‚ cation for products containing OH and C=O [Rosana, (2003)]. 2g (85.15% concrete obtained from the company) of the extract was transferred into a 100mL flask containing 10mL ethanol, and then made up to the final volume of with ethanol and mixed well. Six aliquots (1mL, 2mL, 4mL, 8mL, 16mL and 32mL) of this solution were transferred into a 50mL flask each and diluted with et hanol again to the mark. We then calculated the concentrations of the PY in each aliquot, considering the percentage of each group (PYI and PYII) in the sample provided (Table A1 in the Appendix), injected (with a micro syringe) 0.1 µL of each solution into the GC after filtering (0.45-ÃŽ ¼m membrane filter) and recorded the elution times and corresponding peak areas (Table A2); subsequently, established the standard curves to express the relationship between the areas produced by the GC and the concentrations (Figure 2). 2.4. Hexane Extraction We extracted pyrethrins (from 100g of grounded sample of particle size of about 30mesh) with hexane in a water bath (YUHUA, DF-101S) in batches at different temperatures (35oC, 40 oC, 45 oC, 50 oC, 60 oC and 70 oC) and times (3hrs, 4hrs, 5hrs, 6hrs and 7hrs) in a 1000mL round-bottom flask, installed with a condenser. Agitation was achieved by stirring vigorously with three big size magnetic stirrers at a speed of 20rpm. The hexane was then removed from the pyrethrin concrete with a rotary evapourator (YUHUA, RE-2000B) at a temperature of 35 oC at a speed of 185rpm to obtain concentrated Crude Hexane Extract (CHE). Each concentrated sample was thereafter, filtered (0.45 µm) and 0.1 µL analyzed (Tables A3). This method has the advantage that the solvent is repeatedly recycled and temperature can be controlled. It offers a light coloured product with high recovery rate of pyrethrins; however, not only the desired components are extracted (Figure 3). Other soluble and hydrophobic sub stances (waxes and pigments) are also extracted [Kiriamiti et al, (2003)]. The solvent is removed by vacuum at lower temperature and the waxy thick mass left is the concrete; composed of essential oils and other oil soluble (lipophilic) materials. 3.0. Results and Discussion 3.1. Extract The extracts (CHE) contain pigments, fixed oils and waxes whose colour is deep yellow with characteristic smell. It also contains several undesired components (Figure 3) compared with the pure sample from the factory (Figure 1). 3.2. Effect of Extraction Temperature Temperature has long been reported to be a crucial factor in the extraction of natural pyrethrins [Atkinson et.al, (2004)]. Pyrethrins are sensitive to temperature (thermo labile) and are therefore, unanimously reported to degrade above 40oC [Stahl and Schuzt, (1980); Gourdon and Romdhane, (2002); Wynn et al, (1994)]. We investigated the effect of different extraction temperatures (40oC, 50oC, 60oC and 70oC) in fixed extraction times (5 hr gave better results than 6hr and 7hr). Our results conform to the reports (refer to Figure 4 and Table A3); the best yield (1.42) and PYI: PYII ratio (4.75) is at 40oC (but the best PYII yield-0.33 is at 70oC). This suggests that targeted components are extracted effectively at this temperature (40oC), above which two problems occur (separately or simultaneously): one is the extraction of more undesirable components at the expense of pyrethrins and the other is the decomposition of pyrethrins to form iso-pyrethrins [Stahl and Schuzt, (1980); Stahl, (1998); Gourdon and Romdhane, (2002); Wynn et.al, (1994)] thereby reducing the yield as seen. 3.3. Effect of Stirring We compared the effect of two stirring methods on extraction yield: the first with one magnetic stirrer and the second with three magnetic stirrers. The results are shown in Table A4, confirming that stirring improves extraction yield by facilitating the dissolution of the active ingredients and the effective distribution of heat. The extractions (at 40oC in 5hr) were repeated severally to ensure reproducibility and accuracy. 3.4. Effect of Extraction Time We further investigated the effect of extraction time by fixing the extraction temperature at 40oC with three magnetic stirrers; to establish the optimum extraction time (our initial time parameters were 5hr, 6hr and 7hr in which 5hr was the best). From Figure 5, the extraction yield increases steadily from 3hr to a peak at 4hr (see data in Table A5). Within this range, more desired components are extracted but after 4hr the yield decreases indicating that with prolonged time, even at the safest extraction temperature (40oC), less and less desired components are extracted and/or they decompose resulting in the decrease in yield. The drop in yield is consistent from 4hr (3.76%) to 6hr (2.15%). This implies that the optimum time (within the times investigated) is not 5hr as initially expected but rather 4hr. However, the ratio of PYI: PYII is best in 6hr (5.14). From 3hr to 4hr, the yield for both PYI and PYII appreciated but the increment in PYI (0.74) is greater than that of PYII (0. 38) hence the drop in the ratio. Between 4hr and 5hr, there is decrease in both PYI and PYII yields. Again, the decrease in PYI (0.98) is greater than that of PYII (0.49) accounting for the drop in ratio. The same reason accounts for the drop in ratio from 5hr to 6hr. 3.5. Effect of Concentrating CHE The effect of concentrating the CHE, on both PYI and PYII yield was analyzed (Table A6). Even though the concentrating temperature (35oC) was below the temperature above which PY degrades (40oC), there was loss in PY yield indicating degradation. This in our view may be due to the exposure of the pyrethrins directly to heat. As more hexane is evapourated, pyrethrins which hitherto, were locked in the solid sample matrix; surrounded by hexane and as such shielded from direct heat, is now in direct contact with the heat; and since they are sensitive to heat, decomposition is inevitable. However, the decomposition is small and negligible (about 2.25mg/ml which is about 0.41% of the total yield) due to perhaps the short concentrating time (about 30 min). 4.0. Supercritical Fluid Extraction (SFE) The CHE is too thick (viscous) to be used directly, coupled with the presents of undesirable components (waxes and pigments). A further treatment, usually with another solvent that only dissolve the desired compounds from the concrete is necessary. Different from other works, this study carried out SFE on the CHE as a purification step. We looked at the effect of time (hr), temperature (0C) and pressure (MPa) on extraction quality and yield. We have not studied the effect of particle size and pre-treatment; for information on this area, see the works of Kiriamiti and others [Kiriamiti et al, (2002)]. 4.1. Sample We concentrated the CHE in a rotary evapourator (from 500ml to 40ml at 185rpm in 30 minutes) for the SFE. 4.2. Extraction Process At the beginning of the extraction (Figure 6), all the check valves are closed except valve #2. This allows the CO2 gas into the compressor #4 (OLSB by Zheng Zhou Co. LTD, China) to be compressed, and the pressure gauges are allowed to attain equilibrium at a set pressure (10, 15 and 20 MPa). Valve #5 is then opened and the compressed fluid (Sc-CO2) is fed into the bottom of the extraction vessel #7 (120ml capacity) for up flow extraction configuration, containing the CHE (40ml) and metal fillings to facilitate effective contacting (increase internal mass transfer); which had earlier been heated to a set temperature (350C, 370C and 390C) and allowed to attain constant temperature with the help of the water bath #6. An appreciable time is allowed (5-10mins) for the total and complete dissolution of the crude extract and then valve #8 is opened and maintained until the pressure is in equilibrium again. The pressure reducing valve #9 is opened finally to collect the pyrethrins in the fl ask #10. A mass flow meter helps to determine the flow rate (1.5L/min). The extraction process is run and stopped at set times (1hr, 2hr and 3hr) and the extracts analyzed with the results tabulated (Table A8). The Metal fillings after each run were washed (10ml or 5ml of Hexane) and collected as residues to check for complete extraction. 5.0. Results and Discussion 5.1. Extracts The extracts did not contain visible pigments as was seen in the CHE. The colour was also different; light yellow to orange but the smell was similar. It also contained two extra components (Figure 10) which was found (by GC mass spectrometry) to be Tricosane (Peak 6) and Tetracosane (Peak 7). This was as a result of comparison with the pure sample from the factory (Figure 1). We compared the yield of the extracts after solvent extraction, concentrating the CHE and the SFE and noted that there was difference. The yield from the SFE was less due possibly, to the relatively high pressures used. Separation of the Sc-CO2 and the product is achieved by a drop in pressure. These high pressures have the tendency of causing the products to remain in the BPR or along the pipe (between the BPR and the flask in Figure 6) due to clotting as a result of the pressure drop; in spite of our use of heating tapes to minimize this effect. This is confirmed by the value of the yield in the residue (0.05%) which is far less compared to the difference between the concentrated sample yield (3.30%) and that of the SFE (2.15%, see Table A10). 5.2. Effect of Pressure According to Kiriamiti and others, the quantity of pyrethrins extracted decreases with decreasing pressure due to (i) the effect of density on the solubility of pyrethrins, (ii) the slightly high density of CO2, (iii) the moderate variation in density with pressure, and (iv) the very low undesirable extracted products [Kiriamiti et al, (2002)]. Our results conclusively conform to this (Table A7). The best extraction pressure was at 20MPa (at 350C and 2hrs). The concentration of PY also increases within this pressure range (from 81.34mg/ml 93.79mg/ml). Similar phenomenon was observed for both 1hr and 3hrs, indicating that more pyrethrins were extracted than the undesirable components within this pressure range (Figure 7). 5.3. Effect of Extraction Time The quantity of pyrethrins extracted decreases with extraction time at higher temperatures (above 400C), explaining that either pyrethrins decompose at these elevated temperatures or more undesirables are extracted instead. From Table A8, the yield and concentration of PY increase from 1hr to a maximum in 2hr (1.35% 2.15% and 90.42mg/ml 93.79mg/ml at 350C and 20MPa). Both however decrease in 3hr (1.24% and 82.30mg/ml, Figure 8). This implies that pyrethrins were extracted faster than the undesirables from 1 to 2hr but as the extraction proceeds, more undesirables were then extracted at the expense of the pyrethrins or which decompose. Therefore, prolonged extraction time rather favours the extraction of undesirables or promotes decomposition of pyrethrins. 5.4. Effect of Temperature Pyrethrins are thermo labile and therefore require being processed at low temperatures. Therefore, high extraction temperature does not only degrade the pyrethrins but also favours the extraction of undesirables (Figure 9). Within the temperature range we investigated, the best yield was at 350C (Table A9). 6. 0. Conclusions Pyrethrins are usually purified with organic solvents (ethanol, methanol, acetone, acetonitrile, petroleum ether etc) or their mixtures [Kasaj et.al, (1999); Henry et.al, (1999); Duan et.al, (2006)] which are generally expensive, flammable and explosive and above all, face strict legislative controls [Patrick, (2003)]. Alternatively, carbon dioxide is used to refining and purification. Sims proposed the use of liquid carbon dioxide [Sims, (1981)]. Similar to our method, Kiriamiti and others reported the extraction of pyrethrins from crude hexane extract (CHE) from batch extraction experiment using carbon dioxide [Kiriamiti et.al, (2003)] but with different extracting conditions and analysis method (HPLC). It is worth noting that our set up is very simple and less expensive coupled with the fact that our sample, after the SFE, contains two extra components (Tricosane and Tetracosane) not reported so far as part of the purification step. These components are not hazardous [Directive 67 /548/EEC] and have similar characteristics (may cause respiratory and digestive irritations), uses (as insecticides and biopesticides) and effects (they may not be detrimental to the insects but they certainly disrupt their behaviuor patterns and flushes them out for the more deadly pyrethrins I) as pyrethrins II [Chemcas.org; Chemnet.com; PPDB, (2011); Wylie, (1972); Lewis et.al, (1975)]. We developed a simple but efficient two-step procedure for the extraction of pyrethrins from chrysanthemum (pyrethrum flowers) and investigated the effect of various operating parameters on concentration and extraction yield. Based on the experimental results, we conclude that the two-step extraction of pyrethrins (first with hexane in a water bath and second with SC-CO2 as a purification step) is feasible and effective; the optimum extraction condition for high pyrethrins yield (3.76%) for the n-hexane extraction was 400C in 4hr; that vigorous stirring facilitated this; and that it is possible to achieve extraction yield of 3% or even more envisaged by Casida and Quistad. To our knowledge, this is the first time such a high recovery of pyrethrins is reported. A number of reasons may be attributed to this high recovery: i) extraction procedure, ii) choice of solvent, iii) vigorous stirring and above all, vi) the type of sample used. We further conclude that for the SFE (2.15% and 93.79mg/ml) the optimum conditions were 350C, at pressure of 20MPa in 2hr. 7.0. References Amrith S. Gunasekara, (2004): Environmental Fate of Pyrethrins, Environmental Monitoring Branch, Department of Pesticide Regulation, 1001 I Street, Sacramento, CA 95812 Atkinson B. L, Blackman A. J, and Faber H, (2004): The degradation of the natural pyrethrins in crop storage, J. Agric. Food Chem. 52, 280-28 Bakaric P, (2005): BuhaÄ  prirodni insekticid, Gospodarski list 17: 41-45 Casida J. E and Quistad G. B, (1995): Pyrethrum Flowers: Production, Chemistry, Toxicology, and Uses, Oxford University Press, New York Chandler S. E, (1948): The Origin and Early History of the Production of Pyrethrum in Kenya, Pyrethrum Post 1 (1): 10-13 Chen Y-L, and Casida J. E, (1969): Photodecomposition of Pyrethrin I, Allethrin, Phthalthrin, and Dimethrin, J. Agr. Food Chem. 17: 208-215 Coomber H. E, (1948): The Chemical Evaluation of Pyrethrum Flowers, Pyrethrum Post 1 (1): 16-19 Directive 67/548/EEC: The Dangerous Substances Directive (as amended) is one of the main European Union laws concerning chemical safety. Duan Wei, Zhengguo Li, Guomin Wang, Yingwu Yang, Yingguo Li and Yuxian Xia, (2006): Separation and purification of Natural pyrethrins by reversed phase high performance liquid chromatography, Chin. J. of Anal. Chem., vol.34, is.12, pp 1776-1779 Dunford N. T, Teel J. A and King J. W, (2003): A Continuous Counter Current Supercritical Fluid Deacidification Process for Phytosterol Ester Fortification in Rice Bran Oil, Food Research International 36, 175-181 Essig K and Zhao Z, (2001b): Method Development and Validation of a High-Performance Liquid Chromatographic Method for Pyrethrum Extract, J Chromatogr Sci 39 (4): 473-480 (8) Essig K and Zhao Z. J, (2001a): Preparation and characterization of a Pyrethrum extract standard. LC/GC 19(7): 722-730 Fattori M, Bulley N. R, and Meisen A, (1988): Carbon Dioxide Extraction of Canola See: Oil Solubility and Effect of Seed Treatment. J. A. O. C. S. 65, 968-974 Gnadinger C. B, (1936): Pyrethrum Flowers. 2nd Ed. McLaughlin, Gormley, King, Minneapolis, Minnesota Gourdon C and Romdhane M, (2002): Investigation in Solid-Liquid Extraction: Influence of Ultrasound, Chemical Engineering Journal 87, 11-19 Jeanne Roberts, (2009)  : Insecticide Treated Mosquito Nets and Malaria Prevention: Weighing the Benefits, Naming the Benefactors at www.celsia.com Jones G. D. G, (1973): Pyrethrum Production, In Pyrethrum; The Natural Insecticide, J. E. Casida (Eds.), Academic Press. New York, NY, 17-21 Kasaj D, A. Rieder, L. Krenn and B. Kopp, (1999): Separation and Quantitative Analysis of Natural Pyrethrins by High-Performance Liquid Chromatography, Chromatographia Vol. 50, No. 9/10 Kiriamiti H. K, Camy S, Gourdon C and Condoret J.S, (2003): Pyrethrin Extraction from Pyrethrum Flower using Carbon Dioxide, J. Supercrit. Fluids, 26, 193-200 Lewis W. J, Richard L. Jones, Donald A. Nordlund and Gross H.R JR, (1975): Kairomones and their use for the management of entomophagous insects: II Mechanisms causing increase in rate of parasitisation by Trichogramma spp, J. Chem. Ecol., vol. 1, No. 3, pp 349-360 Mohamed R. S and Mansoori G. A, (2002): The Use of Supercritical Fluid Extraction Technology in Food Processing, Featured Article, Food Technology Magazine, June, The World Markets Research Centre, London, UK Patrick Pelerin, (2003): Comparing Extraction by Traditional Solvents with Supercritical Extraction from Economic and Environmental Standpoint, Proceedings of the 6th International Symposium on Supercritical Fluids, TOME 1 Raventos M, Duarte S, and Alarcà ³n R, (2002): Application and Possibilities of Supercritical CO2 Extraction in Food Processing Industry: An Overview, Food Sci. Technology International, 8 (5), 269-284 Rosana V, (2004). Optimization of Gas Chromatographic-mass Spectrometric Analysis for Fatty Acids in Hydrogenated Castor Oil obtained by Catalytic Transfer Hydrogenation. Analytica Chimica Acta 505, 223-226 Schneider G. M. V, Stahl E and Wilke G, (1980): Extraction with Supercritical Gases, Verlag Chemie, Deerfield Beach, Basel Sims M, (1981): Liquid carbon dioxide extraction of pyrethrins, US Patent no. 4281171 Stahl E and Schà ¼tz E, (1980): Extraction of Natural Compounds with Supercritical Gases, J. Med. Plant Res. 40, 12-21 Todd G. D, Wohlers D, and Citra M, (2003). Toxicology Profile for Pyrethrins and Pyrethroids, Department of Health and Human Services, Agency for Toxic Substances and Disease Registry, Atlanta, GA Visiani R, (1842-1852): Flora Dalmatica, Lipsiae; In Flora Europaea; vol 3, Cambridge University press Wang I. H, Subramanian V, Moorman R, Burleson J and Ko J. R, (1997). Direct Determination of Pyrethrins in Pyrethrum Extracts by Reversed-Phase High Performance Liquid Chromatography with Diode-Array Detection. J. of Chrom. 766, 277-281 Wenclawiak B. W and Otterbach A, (1999). Supercritical Fluid Extraction Kinetics of Pyrethrins from Flowers and Allethrin from Paper Strips. J. Anal. Chem. 365 8, 472-474 Wenclawiak B. W, Krappe M and Otterbach A, (1995): In Situ Transesterification of the Natural Pyrethrins, J. of chrom. A, 785, 263-267 World Health Organization, (1975): Data Sheet on Pesticides No. 11, Pyrethrins (www.inchem.org/documents/pds/pds/pest11_e.htm) Wynn H. T. P, Cheng-Chin C, Tien-Tsu S, Fong L, and Ming-Ren S. F, (1995): Preparative Supercritical Fluid Extraction of Pyrethrins I and II from Pyrethrum Flower; Talanta 42, 1745-1749

Playing Basketball Essay -- Personal Narrative Essays

Playing Basketball Being part of the basketball clique in high school helped me learn the intrapersonal and social communication skills I use today. As a child playing basketball was my favorite activity or hobby. It's also the way I met a lot of my good friends that I have now. All my close friends I have met. I have met them through playing basketball.. Whether they were on my team, the opposing team or just fans in the crowd who admired my play. Not only has basketball helped me gain friends, but basketball also taught me a lot about life. There are many aspects of life that coincide with basketball. For instance basketball is a team game and an individual game. Like in life you have to work together with other people. The communication skills I learned from basketball helped me communicate with friends, girlfriends, parents and bosses at work.   Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  I started playing basketball in the fifth grade. In the fifth grade I was a quiet and shy little boy. I rarely talked to my teammates and kept to myself. As the years went by I learned how to communicate with my teammates and my coaches and began to break out of my shell so to speak. I started making more and more friends that also went to my junior high. Basketball helped me meet a lot of new people. By the time I left junior high I had already a core group of friends I hung out with that I met from playing basketball.   Ã‚  Ã‚  Ã‚  Ã‚  I remember my first day of high school like it was yesterday. A lot of my friends were...

Essay --

Margaret Preston was born on the 29 of April 1875 in Adelaide, South Australia. Margaret was the first of David and Prunice McPherson’s daughters; she took the name Preston later by marriage. Margaret loved creating art from a young age and that just turned out to be what her career was after she had practised for years and years. Whilst young Margaret’s artistic abilities were already noticed and her early formal art education was at the National Gallery School in Melbourne and the Adelaide school of Design, painting and Technical arts. Margaret travelled to Munich in 1904, where she attended the Government Art School for Women. From Germany she moved to Paris to study at the Musee Guimeta. In 1907, she returned to Adelaide for a short amount of time and then went back to Europe. Her father died in 1894 so by her teaching it helped bring in some income as her father brought in most of their money. After World War I, Margaret married a businessman with the name William George Preston and they settled down in Sydney. The marriage gave her some financial stability and travelling overseas became an important part of the Prestons' lives. Since now that Margaret was settled and without children, she was able to put her art first. In October 2003, Cotton died age 92. The Olive Cotton award which is given out annually is dedicated in memory of her role as one of Australia's leading twentieth century photographers. Margaret Preston practiced engraving on Huon pine, but then started to practise on the rough side of Masonite. Also it says that Preston really practised her art and went to many schools and placed to be taught about art and to get more experience. The things that inspired Margaret Preston are artistic and cultural influences ... ...ve with what is in her photos and the light and dark effect and shadow. The ways you can tell that these sites are reliable is the fact that they are produced by the Australian Government. Another reason I know I can trust this site is because it is not covered in advertisements an there are no pop ups. Also it is not trying to sell you anything which means there are no scams involved. By the writer listing the references it shows that the writer has done their homework on that person, and the sites are on that person only or are on artists in that time. Sites like Wikipedia where anyone can change what has been written is not reliable as it can be altered by a random person who has no knowledge on that topic. The Australian Government is going to write the facts as people from many countries including Australia go to these sites and use these sites as fact sheets. Essay -- Margaret Preston was born on the 29 of April 1875 in Adelaide, South Australia. Margaret was the first of David and Prunice McPherson’s daughters; she took the name Preston later by marriage. Margaret loved creating art from a young age and that just turned out to be what her career was after she had practised for years and years. Whilst young Margaret’s artistic abilities were already noticed and her early formal art education was at the National Gallery School in Melbourne and the Adelaide school of Design, painting and Technical arts. Margaret travelled to Munich in 1904, where she attended the Government Art School for Women. From Germany she moved to Paris to study at the Musee Guimeta. In 1907, she returned to Adelaide for a short amount of time and then went back to Europe. Her father died in 1894 so by her teaching it helped bring in some income as her father brought in most of their money. After World War I, Margaret married a businessman with the name William George Preston and they settled down in Sydney. The marriage gave her some financial stability and travelling overseas became an important part of the Prestons' lives. Since now that Margaret was settled and without children, she was able to put her art first. In October 2003, Cotton died age 92. The Olive Cotton award which is given out annually is dedicated in memory of her role as one of Australia's leading twentieth century photographers. Margaret Preston practiced engraving on Huon pine, but then started to practise on the rough side of Masonite. Also it says that Preston really practised her art and went to many schools and placed to be taught about art and to get more experience. The things that inspired Margaret Preston are artistic and cultural influences ... ...ve with what is in her photos and the light and dark effect and shadow. The ways you can tell that these sites are reliable is the fact that they are produced by the Australian Government. Another reason I know I can trust this site is because it is not covered in advertisements an there are no pop ups. Also it is not trying to sell you anything which means there are no scams involved. By the writer listing the references it shows that the writer has done their homework on that person, and the sites are on that person only or are on artists in that time. Sites like Wikipedia where anyone can change what has been written is not reliable as it can be altered by a random person who has no knowledge on that topic. The Australian Government is going to write the facts as people from many countries including Australia go to these sites and use these sites as fact sheets.