Wednesday, November 27, 2019
African Americans Past, Present, and Future Essay Example Essay Example
African Americans: Past, Present, and Future Essay Example Paper African Americans: Past, Present, and Future Essay Introduction African Americans: Past, Present, and Future Kenitra Evans HIS 204: American History Since 1865 Lisa Burgin February 10, 2011 African Americans: Past, Present, and Future African Americans have been through devastating trials and tribulations before 1865 and so on. Freedom following the Civil War was the beginning to a new face in such a head strong racistââ¬â¢s community. Slavery was only the beginning to the issues and derogatory mishaps in African American history. As if slavery wasnââ¬â¢t enough, blacks were subject to lynching, segregation, minimal to non-paying jobs, as well as simply being put down for having a darker skin tone than ââ¬Å"the manâ⬠. Although things of this sort occurred, it never brought an end to hope, and now the horrific past has become a promising future. Slavery was one of the first mishaps to occur in our American history. Slavery is defined as the state or condition of being a slave; a civil relationship, whereby one person has absolute powe r over another and controls his life, liberty, or fortune. Abraham Lincoln, one of Americaââ¬â¢s strongest leaders passed the Emancipation Proclamation in June of 1863. This proclaimed that 3. 1 million slaves were freed as Union armies advanced. By the year 1865 nearly all of Americaââ¬â¢s slaves were free. African Americans: Past, Present, and Future Essay Body Paragraphs For the most part, while most slaves were free, the Emancipation Proclamation did not make the use of slavery illegal in some states. Due to this issue and knowing that slavery was still legal in some states, the Thirteenth Amendment was enacted. Shortly after the release of slaves, most slave owners were afraid that their homes and land was in danger from poorly treated slaves. In result of this America passed laws that were known as black codes. Black codes are a body of laws, statues, and rules enacted by southern states after the Civil War to gain control over the slaves again. They also wanted to ensure that would keep the white man active while keeping cheap labor in high demand. One of the first laws set for these black codes was that working African Americans were subject staying in the workplace at all times with no exceptions. In Mississippi, blacks were required to be employed and carry proof of their employment at all times. Blacks that refused to work were subject to cor poral chastisement. In the event an African American was caught stealing, or any other crime, they may be hung by their thumbs. Although slaves were free, some still felt the need to have them under control. After the Civil War, while the government in the South was weak, whites felt as if the blacks would become outraged and retaliate on the vicious treatment received by slave owners. In result, the Ku Klux Klan, or KKK was established in May of 1866. Most African Americans feared the KKK because they would operate in a very secretive manner. They were clothed in whited robes covered from head to toe, and would approach you by waiting for an event to end, and before you know it, blacks would be attacked and beat by members. They would punish blacks by hanging, lynching or beating innocent African Americans. With little to no law enforcement the KKK was able to continue this behavior for many years until 1871 when a force bill was established to combat the Klan. Even after this bill was passed, this did not prevent the Klan from continuing in other areas not very long after. While African Americans were being freed from slavery, housing and basic necessities were difficult to obtain during this historical time. Due to this issue, also in the year 1865 America also established the Freedomââ¬â¢s Bureau. The Freedomââ¬â¢s Bureau was made to assist African Americans of the South to make a huge change from slavery to freedom. The Bureau did not have the support of the government financially, but still managed to help blacks on their journey. The bureau provided emergency food, clothing, and medical care to some war refugees, including white southerners. The bureau also managed to open sixteen African American schools in the same year. This opened the doors for African Americans to receive the same education as the whites and to make more of their freedom. The Freedomââ¬â¢s Bureau really helped to shape the black community in a time where very few people we re willing to assist. In the year 1866, a Freedomââ¬â¢s Bureau school opened in Austin and was the first one in Austin to open for African Americans. Although African Americans were free, they still experienced unequal rights made by congress. Being unable to vote and having rights as an American citizen was basically nonexistent to the black community. In response to this issue the Fourteenth Amendment was established in 1868. The Fourteenth Amendment was something that stated that everyone born in the United States or resigned in the United States was subject to equal rights. This amendment was in combination of civil rights and citizenship. This made everyone equal despite their race, although blacks were still discriminated against in most areas. In the year 1870, the Fifteenth Amendment was established, which gave African Americans the right to vote. In that same year the first African American senator was elected. Hiram Revels became the first senator out of Mississippi and made history. Along with Revels becoming the first African American senator, sixteen African Americans served in Congress and about six hundred served in states legislator during reconstruction. Howard University was the first African American Law College opened in 1869. After the first law school was opened, in 1881 the first African American all women school was Spelman College. Sophia B. Packard and Harriet E. Giles founded Spelman. In the same year Booker T. Washington found Tuskegee Normal and Industrial Institution, and became one of the leading schools for African American learning. Shortly after opening George Washington Carver becomes a teacher in agriculture research. He was noted an international reputation for his agriculture advances. In unit II, the National Association for the Advancement of Colored People or NAACP, was founded February 12, 1909. The NAACP is the nationââ¬â¢s oldest, largest, and most advanced civil rights organization. The organization was fighti ng for equal opportunities and conducting voter mobilization. The NAACP was formed in retaliation of lynching in some areas and riots happening after Abraham Lincolnââ¬â¢s assassination; not to mention the harsh manner blacks were treated. The organization stated that their primary goal was to secure for all people the rights guaranteed in the thirteenth, fourteenth, and fifteenth amendment to the United States Constitution, which promised an end to slavery, the equal protection of the law, and universal adult male suffrage, respectively. (NAACP. org National Association for the Advancement of Colored People 100 years 2009) The NAACP has been around for one hundred years and is still a strong organization. This organization was built to help African Americans in the struggle of their past, and is still assisting toward blacks and their trials. Unit III was a great time for African Americans because it showed a time for blacks to be creative and show their true talents. The Harlem Renaissance began in the 1920ââ¬â¢s through the 1930ââ¬â¢s. In the early 1920ââ¬â¢s the Harlem Renaissance was also known as the ââ¬Å"New Negro Movementâ⬠. This was a cultural movement in America during the 1920ââ¬â¢s which black art, literature, and music experienced renewal and growth, which originated in New Yorkââ¬â¢s Harlem district. Shortly after the emancipation of slavery, blacks were looking for ways to make their culture more specific, and establish a meaning behind their race. In the South their lives had little to no meaning, by cotton picking so a nice majority of African Americans began to move to the North. New ways of playing the piano, or any instrument for that matter, was a way to be able to tell the poor Harlem people from the more established people. The Apollo theatre opened January 26. 1914 and has been a legacy in the black culture for many years to come. The Apollo attracts 1. 3 million tourists a year. Harlem began a lot of well-known musicians and/or poets, during the civil rights, including Langston Hughes. The Great Depression brought the end to the Harlem Renaissance due to the naive assumptions about the centrality of culture, unrelated to economic and social realities. In unit IV trouble began occurring when President Kennedy announced that a college was going to integrated with a black student by the name of James Meredith. Although Kennedy was hoping for everyone to remain sane, it soon backfired when mobs began showing up on campus shooting out streetlights, throwing rocks and bottles and driving bulldozers. Shortly after the rioting from segregation began, Martin Luther King Jr. ecided to have a group of people go to Alabama in hopes of downsizing segregation. MLK was attempting to slow down the riots in America by taking a nonviolent approach. Shortly after the assassination of Robert Kennedy, Malcolm X, a Muslim of Islam began being a new voice for the black community. He felt that there was a huge i ssue with the civil rights, because now a rather than having a black man, killed, they were now taking the lives of whites. African Americans were banned from suburbs, kept out of decent schools, and were denied form having decent jobs. While Malcolm X was a great leader, he became a threat to the white community. Rivals in 1965 then gunned him down. ââ¬Å"Black Powerâ⬠became the new era for African Americans. The black power movement encouraged African Americans to recover their cultural roots, their African heritage, and a new sense of identity. For more militant situations the Black Panthers took a more violent approach for justice. They began carrying weapons and abusing their constitution rights to bear arms. The Black Panthers was not such a large community compared to the nonviolent approach to make changes. In 1968, Martin Luther King was assassinated in Memphis. In our present time, things have really changed for African Americans. Blacks are able to vote with no spe cial treatment compared to others. Barack Obama is the nations first African American president in the United States. He was a senator for the United States and easily grasped the attention from the Democratic Party. This goes to show how much the nation has changed today and how we have come so far. It is amazing how we can look back in our American history and see the harsh treatment that went on many years ago. It is a blessing to be in a world now where everyone is able to be or do whatever he or she wants not depending on the color of his or her skin. African Americans have experienced a lot of trials and tribulations from 1865 and today. However we overcame this issue, and today we are able to say that we are a strong America and everyone is treated ââ¬Å"equallyâ⬠. References 1. American Journal of Public Health: Washington (2010) Vol. 100, Iss. S1. pgs. s56, 10 pgs. 2. Challenges to Diversity from an African American Perspective (1994) Vol. 32 Number The Wilson Quarter ly: Washington (2010) Vol. 34, Iss. . Pg. 30, 6 pages. 3. Church History. Chicago: Dec. (2010) Vol. 79, Iss. 4; pg. 952, 4 pgs. 4. Organization of American Historians. Magazine of History. (2009) Oxford Journals. Humanities. Volume 23. Iss. 4pgs. 19-23 5. Nation of Nations Volume II: Since 1865 (2004) McGraw Hill Davidson, Gienapp, Heyrman, Lytle, Stoff 6. Americaââ¬â¢s Changeable Civil War. The Wilson Quarterly Washington; spring 2010 Vol. 34, Iss. 2 pg. 30, 6 pgs. 7. ââ¬Å"Black Codes. â⬠Westââ¬â¢s Encyclopedia of American Law. 2005. Retrieved February 07, 2011 from Encyclopedia. com: http://www. encyclopedia. com/doc/1G2-3437700548. html We will write a custom essay sample on African Americans: Past, Present, and Future Essay Example specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on African Americans: Past, Present, and Future Essay Example specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on African Americans: Past, Present, and Future Essay Example specifically for you FOR ONLY $16.38 $13.9/page Hire Writer
Sunday, November 24, 2019
Free Essays on Them Metamorphosis And The Death Of Ivan Ilyich
Parallel Themes in Metamorphosis and The Death of Ivan Ilyich Several themes occur in both Franz Kafkaââ¬â¢s, Metmorphosis and Leo Tolstoyââ¬â¢s The Death of Ivan Ilyich, however the way in which these themes are presented and the meanings associated with them vary in each work. Isolation, materialism, and self discovery are ideas found in both pieces of literature. Both works have a constant theme of isolation. In Kafkaââ¬â¢s work Gregor is transformed into an insect. His entire family and employer immediately reject him. His father locks him in his room; his mother faints at the mere sight of him. None of them worry about how Gregor is feeling in regards to his transformation. Their worry is more about who will provide for them now, since in the past Gregor had been the sole source of income for the family. To add to his feelings of loneliness, Gregor, being an insect is incapable of communicating with them. Rather, he must stand by in silence; powerless to speak, complain, or protest anything. The idea of isolation presents itself differently in Tolstoyââ¬â¢s story. The isolation that Ivan experiences comes from the fact that whenever Ivan encounters a situation that does not promote his pleasant existence, he alienates himself from it. ââ¬Å"In his work itself, especially in his examinations, he very soon acquired a method of eliminating all considerations irrelevant to the legal aspect of the case, and reducing even the most complicated case to a form in which it would be presented on paper only in its externals, completely excluding his personal opinion of the matter, while above all observing every prescribed formalityâ⬠(1191) Ivan was masterful at taking the most complicated of matters and reducing them to simple forms on paper. This ability was reflected in the way he dealt with potentially emotional and personal situations with apathy and objectivity, reflects in all aspects of his life. As aforementioned, Ivan deals with... Free Essays on Them Metamorphosis And The Death Of Ivan Ilyich Free Essays on Them Metamorphosis And The Death Of Ivan Ilyich Parallel Themes in Metamorphosis and The Death of Ivan Ilyich Several themes occur in both Franz Kafkaââ¬â¢s, Metmorphosis and Leo Tolstoyââ¬â¢s The Death of Ivan Ilyich, however the way in which these themes are presented and the meanings associated with them vary in each work. Isolation, materialism, and self discovery are ideas found in both pieces of literature. Both works have a constant theme of isolation. In Kafkaââ¬â¢s work Gregor is transformed into an insect. His entire family and employer immediately reject him. His father locks him in his room; his mother faints at the mere sight of him. None of them worry about how Gregor is feeling in regards to his transformation. Their worry is more about who will provide for them now, since in the past Gregor had been the sole source of income for the family. To add to his feelings of loneliness, Gregor, being an insect is incapable of communicating with them. Rather, he must stand by in silence; powerless to speak, complain, or protest anything. The idea of isolation presents itself differently in Tolstoyââ¬â¢s story. The isolation that Ivan experiences comes from the fact that whenever Ivan encounters a situation that does not promote his pleasant existence, he alienates himself from it. ââ¬Å"In his work itself, especially in his examinations, he very soon acquired a method of eliminating all considerations irrelevant to the legal aspect of the case, and reducing even the most complicated case to a form in which it would be presented on paper only in its externals, completely excluding his personal opinion of the matter, while above all observing every prescribed formalityâ⬠(1191) Ivan was masterful at taking the most complicated of matters and reducing them to simple forms on paper. This ability was reflected in the way he dealt with potentially emotional and personal situations with apathy and objectivity, reflects in all aspects of his life. As aforementioned, Ivan deals with...
Thursday, November 21, 2019
Overview of Ryan Air Essay Example | Topics and Well Written Essays - 1000 words
Overview of Ryan Air - Essay Example In the years1990 and 1991, the firm had new management and this resulted into a complete overhaul. The firm adopted some practices of Southwest Airline and this made it to cut its routes to 5 from 19. By the year 1991, Ryan Air was in possession of 6 aircrafts, 350 workers, and besides, it carried about 700,000 passengers annually in the five routes and from the year 1991 to the year1997, the firm increased the fleets it had to 21, and besides, it increased the routes it followed. All through this period, the number of passengers continued to grow because of the low fares that were charged by the firm. The firm was prevented from expanding its market by strict regulations that were enforced on the European airlines. However, the year 1997 was a turning point for the airline industry in Europe and for Ryan Air; this was because the regulations that prevented the airlines form expanding their boundaries were lifted and the airlines had the opportunity of establishing newer routes so as to cover the whole continent of Europe; thus this made Ryan Air to expand its routes. By the year 2001, Ryan Air had the largest travel website in the whole of Europe and in a span of three months after the launch of the website in the year 2000; it got more than 50,000 online bookings in a week. The firm realized that passengers were in need of transportation which was very fast and also inexpensive and for the firm to offer the cheap transportation method, low costs as well as efficiency were vital. Therefore, Ryanair changed business within the industry by providing lower charges and despite this; they have managed to make consistent profits through reduced costs. Through the use of Southwest model of lower costs, Ryan air developed a strategy, which was different from the ones of Lufthansa, British Airways, as well as Air France, for instance Ryan air made use of one aircraft fleet that ensured there were economies of scale in planning as well as training its crews, stocking sp are parts and also maintenance of its planes (Leocha). The firm also transitioned from B737-200s as well as B737-300s, which was bought by the firm as second hand to newer B737-800s. The firm reduced maintenance costs by introducing newer aircraft and besides, the productivity as well as the efficiency of the firm also improved through the use of no-frills methodology. Customary, in-flight services like seat allocation, complimentary drinks, meals and provision of newspapers were eliminated by the firm, rather, the company got a lot of profits from the minor services through charging passengers for in-flight services as well as additional travel expenses like travel insurance. Besides, workers were always compensated when sales were made and therefore, Ryan Air benefited through increased profits as well as efficiency. The passenger base of Ryanair grew to 23.1 million in the year 2003 down from 6.1 million in 2000. During this period, the profits made by the firm greatly increased to â⠬226.5 million from â⠬72.5 million. The competition within the airline industry in Europe was changed by low-cost-low frills strategy of RyanAir and this made a number of other low-cost operators to amalgamate to counter competition. The objective of Ryanair is to establish itself firmly as the leading low-fares airline in Europe through persistent improvements as
Wednesday, November 20, 2019
What were the political, strategic, and economic implications of the Essay
What were the political, strategic, and economic implications of the U.S. winning the Spanish-American War - Essay Example One political implication is that ââ¬Å"when the balance of power in an international system is shifting, war becomes more likely when leadersââ¬â¢ domestic political outcomes depend on a favorable national outcome in the international systemâ⬠.2 Note that the Americans, due to yellow journalism, had felt perturbed due to the atrocities that reportedly happened from the Spanish Occupation in Cuba. In return, the state leaders were seized to follow the demands of their voting public to avoid defeat in elections even though they wished for more peaceful settlement. Moreover, winning a war implies better chances in winning the massesââ¬â¢ heart. This move was a form of the traditional politics of forming public image and pleasing the public. Because of the Cuban War of Independence from Spain, the economy of the United States led to a downturn due to its heavy involvement in the Cuban economy. As the Cubans were freed, ââ¬Å"the rise of the United States as a world power derived from its gains in the world economy. The U.S. share of world manufacturing production climbed...making it by far the supreme industrial nation.â⬠3 Winning the war against Spain may imply that the US had a hidden desire to either set Cuba free to improve the health of their economy or to emerge as a dominant world power to manipulate economic conditions for national benefits. Americanââ¬â¢s derived the main strategy of attacking Spainââ¬â¢s other colonies through naval bombing. ââ¬Å"Although the war was ostensibly over Cuba, U.S. forces attacked Spainââ¬â¢s other colonies. This might be excused as strategically necessary ââ¬â had not the United States subsequently absorbed these à territoriesâ⬠4 In July, after Santiago had fallen and Spain had already sued for peace, U.S. forces invaded the Spanish colony of Puerto Rico. In the Pacific, a U.S. cruiser began shelling Guam and then seized
Sunday, November 17, 2019
Comparative Foreign policy Essay Example | Topics and Well Written Essays - 1250 words
Comparative Foreign policy - Essay Example On the Necessity of Individual Level of Analysis in Understanding of Case Policy Outcome 7 I. Foreign Policy Theories, Use by Foreign Policy Analysts Theories are proposed explanations relating to the workings of things. In foreign policy studies, theories refer to the major theories relating to the field of study, and they are mainly liberalism, realism, Marxism, and constructivism in some texts. Theories are essentially tools that foreign policy analysts use to make sense of the actions of states in relation to each other, and in the context of global economic, political arenas of actioni ii. As the definition suggests, theories are the distillation of insights, writings, studies and observations about the actions of states in the real world, distilled on the assumption that states act in certain ways, based on certain underlying motivations, dynamics, and historical circumstances. Theories are used on the assumption that given a set of conditions, states will act in defined ways m oving forward. iii II. Liberalism, Realism- Key Analytical Components, Comparison and Contrast Realism posits that the key characteristic of the international order is disorder, or anarchy and chaos. In the absence of an organizing principle, or a body of law to mediate disputes and the general conduct of nations when dealing with other nations, the operative principle is power. Therefore, nations act and watch out for their own interests in the main. Self-interest and self-preservation, the advancement of one's own interests, is the rule and the defining consideration when crafting foreign policy. Realism has several implications for the way the world system of politics and economics is shaped. Power is the currency, and where one state amasses power, that automatically translates to threats to the inner integrity of other states. Balance of power becomes an important consideration. Moreover, viewed from a realist perspective, the power currency translates to an obsession with proj ecting power and defense capabilities, as reflected in military might. Nations then act out and craft foreign policy in relation to that perceived and actual power residing on their military capabilities. Military power then becomes a central analytical component when reading the actions of nations in the international stage, with some superpowers such as China acting in ways that are different from those with some power, and those who have no power at all. Constraint and independence in crafting foreign policy are reliant on the size of a nation's military capabilities. At the weak end of that spectrum, very weak nations are the most constrained. Middle powers meanwhile yield considerable power, and act in ways such as forming alliances to balance out the power of the strong states. iv Liberalism, in contrast, views the world order not in terms of balance of power and military might, but in terms of interdependence, for instance through the interdependence of nation economies, and how such interdependence shapes more cooperative stances, a greater emphasis on world bodies that foster cooperation and dialogue, such as the United Nations, and nations, especially less powerful states, towing the line in terms of adhering to the rules of the global market. Market forces are relevant considerations, and so are the economic and political implications of interdependence as shaping foreign policy for different countries. The operative principle here is that of
Friday, November 15, 2019
Different Methods of Chromatography Analysis
Different Methods of Chromatography Analysis General Introduction Health is of prime importance to a human beings and wants to get cured in the least possible time whenever they falls ill. This desire and necessity has resulted in the use of a large number of synthetic organic compounds as medicines despite the fact that usually side effects are associated with the use of these drugs. In recent times, practice of giving a number of drugs together has very much increased. Due to drug interaction, the levels of the active drugs together has very much increased. Due to drugs interaction, the levels of the active drug may be too high for a longer time to cause side effects. Further, the reduction/ oxidation products of these medicines, which are produced during the metabolism may also be responsible for their side effects. It is therefore necessary to develop sensitive trace analytical methods for the analysis of the drugs by using UV Spectrophotometer, most sophisticated and advanced chromatographic techniques like UPLC, GC, HPLC etc. Use of pharmaceutical preparations to make their determination, a matter of for most importance. Due to the great variability of the materials, which are to be analyzed; skillful sampling, preliminary clean-up procedure and selection of a appropriate method in the assay is necessary. With the introduction of new and more potent drugs every year, the pharmaceutical analyst is called upon to devise new analytical methods like chromatographic techniques; with ever increasing sensitivity, specificity and simplicity for new drugs . HISTORY OF CHROMATOGRAPHY1 The study of chromatography happening in eighteenth century when with a immense significance the nature of inorganic compounds was considered on filter paper by Runge. In 1898 Day in USA forced crude petroleum throughout a column of limestone and fullerââ¬â¢s earth. The chromatographic theory was discovered first by a Russian botanist , MichaelTswett (1906) who make use of a glass column of calcium carbonate for separation of chlorophyll pigments from plant by using petroleum ether. The major development occurred around 1930 when Lederer and co-workers in 1931 separated xanthine and lutein on a column of calcium carbonate powder. In 1935 ,Adams and Holmes observed some synthetic ion exchange resins capable of exchanging ionsà and thus ion exchange chromatography came in to existence. In 1944, Martin, Consden ,Gorden replaced silica gel columns by strips of filter paper and developed Paper chromatography. Thin layer chromatography though discovered first by Lzmailer and Shraiber , was further developed By Stahl and co-workers using silica gel on glass plates. Amongest the newest and most effective chromatographic technique for analyzing complex mixtures is Gas chromatography. It was introduced by Martin and James in 1952. INTRODUCTION OF CHROMATOGRAPHY1 A variety of methods are available for the separation of components from the mixture. They are mainly divided in to two types. Chemical methods Physical methods. The physical methods include fractional distillation, extraction, counter-current distribution; crystallization etc.These methods are effective in separation, purication and identification of many compounds .how ever difficulty arises in case of compounds where individual components have similar physical and chemical properties i.e mixture of liquids having very close boiling points etc. Chromatographic methods corresponds to the most handy and potent technique for these problems. These chromatographic methods are used for the partition of components of a composite mixture. Because of the quickness and efficiency of this methods, it can be used in all fields particulalarly in chemistry, biology, medicine, dyes, forensic departments and clinical studies. The term Chromatography derived from Greek words Kromatos means colour and Graphos ââ¬âmeans written. Tswett defined chromatography as the technique in which the components of a combination are separated on an adsorbent column in a flowing system. As per IUPAC Chromatography is defined as a method used mainly for the division of the components of a sample ,in which the components are disseminated between two phases, one of which is stationary whereas the other moves. The stationary phase might be a solid or a liquid support on a solid or a gel, and might be packed in a column ,spread as a layer or disseminated as a film. The mobile phase possibly will be gaseous or liquid. First and foremost for the partition of the components of a sample , in which the components are disseminated . TYPES OF CHROMATOGRAPHY: Chromatographic methods can be classified on the basis of stationary and mobile phases used, depending on the stationary and the mobile phase used, separation occurs because of a combination of two or more factors such as extent of adsorption, rate of migration and capillary action etcâ⬠¦ Different types of chromatographic techniques as follows a. Adsorption chromatography b. Partition chromatography c. Paper chromatography d. Thin layer chromatography e. Gas-liquid chromatography f. Gas-solid chromatography g. Ion exchange chromatography A Adsorption Chromatography: The principle underlying the separation of the compounds is adsorption at the solid ââ¬âliquid interface, for successful separation , the compounds of a mixture must show different degrees of affinity for the solid support and the interaction between adsorbent and component must be reversible, as the adsorbent is washed with fresh solvent the various components will therefore move down the column until, ultimately, they are arranged in order of their affinity for the adsorbent ,those with least affinity move Paper chromatography: Paper partition chromatography was developed by consden et al, In this paper partition chromatography paper is used as the support or adsorbent but partition probably plays a greater part than adsorption in the separation of components of the mixtures In this chromatography substances are distributed between two liquids ie one is the stationary liquid (generally water )which is detained in the fibers of the paper and is called as stationary phase, the other is the touching liquid or rising solvent and is called moving phase, The components of the mixture to be separated at different rates and appear as spots at different points on the paper The moment of components on the paper depends on the amount and nature of the stationary phase compared with the amount of mobile phase in the same part of the paper and also on the partition coefficient The rate of movement of mobile phase at the solvent front tends to be faster than at the position of the component on the paper ,it is better to defined as Rf RF= DISTANCE traveled by centre of component /Distance travelled by solvent front Types of paper chromatography 1 Descending chromatography Is defined as while the development of the paper is made by permiting the solvent to travel down the paper Advantage: 1. The development can be continued indefinitely even though the solvents run off at the other end of the paper 2. Ascending chromatography once the improvement of the paper is done by permitted the solvent to move up the paper it is recognized as ascending technique 3. Ascending ââ¬â Descending chromatography In this procedure the upper fraction of the ascending chromatography can be folded over a glass rod permit the ascending expansion to change over into the descending after crossing the glass rod 4. Radial Paper chromatography This is also known as circular paper chromatography, this constructs utilize of radial development 5. Two dimensional chromatography In this a square or rectangular paper is utilized the sample is applied to one of the spot of the paper. The second development is performed at right angle to the direction of the first run This type of chromatography can be conceded out with identical solvent systems in the both the directions or by two solvent systems Importance of paper chromatography It is used for analyzing the polar compounds like amino acids, sugars and natural products, It also has been applied for the separation of many organic and biochemical products Thin layer chromatography: Thin layer chromatography is similar to paper chromatography except that a thin (025 mm) layer of some inert material such as AI2O3, MgO or Si o2 is used as the substrate instead of paper The process of thin layer chromatography was first established by izmailor and shraiber in 1938 Thin layer chromatography offers a faster and more efficient separation than paper chromatography and majority of paper chromatographic separations have now been superseded by thin layer chromatography procedures Thin layer chromatography has many advantages when compared to the other techniques like paper and column chromatography They are It requires very little time for separation Spraying with corrosive agents for credentials is also tolerable which is not achievable in paper chromatography as cellulose gets destroyed The method is used for partition , adsorption ,ion exchange chromatography as there is huge range of adsorbents obtainable This technique can be apply to preparative separation with the aid of thicker layer of adsorbents Thin layer chromatography has been included under both adsorption and partition chromatography ,in this the separation is carried on a glass or plastic plate which is coated with a thin uniform layer of finely divided inert adsorbent such as silica gel or alumina The plates are activated, the solution of the sample in a volatile solvent is applied by using a capillary tube or a micropipette to a spot keeping 1-2 cm from the bottom of TLC Plate ,the position of the sample spot is indicated by making a origin line on the plate with the lead pencil When the blemish has dried, the plate is positioned vertically in a suitable tank with itââ¬â¢s lower edge immersed in selected mobile phase The solvent rises by capillary action, resolving the sample mixture into separate spots at the end of the run the solvent is tolerable to vanish from the plate and the separated spots are situated and recognized by various physical and chemical methods Preparation of chromate plates With the help of pouring, dipping, spraying and spreading methods the chromatoplates are prepared, with help of qualitative and quantitative methods the TLC plate evaluated Ion exchange chromatography Separation of ionic substances may be carried out in glass columns similar to those described for adsorption and partition chromatography the chromatography medium ââ¬â stationary phase is an ion exchange resin which is a polymer containing fixed charged groups and replaceable counter ions of the opposite charge, when a sample containing organic or inorganic ions is passed down the column the ions of the same charge as the counter ions displace the counter ions into the mobile phase and are retained on the column cationic and anionic exchange resins have positively and negatively charged counter ions respectively ,and retard the migration of the sample cations and anions respectively , Ion exchange chromatography: Separation of Ionic substances may be carried out in glass columns similar to those describes. Ion exchange resins: Modern resins are based on cross linked polystyrene prepared in bead form by the copolymerization of styrene divinyl benzene (DVB) Most commonly useful resins are prepared with approximately 8% DVB. Strong action exchange resins are prepared by sulphonating the free benzene rings. Strong anion exchange resins includes quaternary ammonium residues are prepared by chloromethylation of the free benzene rings followed by treatment with a tertiary amine salt ex: Trimethylamine amino hydrochloride. The strength and exchange capacities of ion exchange resins depend on the acidic or basic strength of the fine charged group. Thus the strongly acidic suphonic acid and strongly basic quaternary ammoinium groups give strong ion exchange resins with a high exchange capacity. Weaker exchange resins containing the weakly acidic carboxylic acid (COOH) or weakly basic derivatives of ammonia (ex: NHR2+Cl) generally have a lower exchange capacity. Applications: Used for the separation of similar ions Used for softening the hard water Purification of organic compounds Anion exchange chromatography include the assay of total halogenic salts using a resin in the OH form. Anion exchange is also used to separate heamine, and neomycin C from neomycin B t o test for neomycin C in Framycetin sulphate and neomycin sulphate. Gas Chromatography: The division of the components of a combination in the gaseous state could be achieved by partition column chromatography using a gaseous mobile phase was first made by martin and synge in 1941. In gas liquid chromatography: The immobile phase is a thin layer of a non-volatile liquid bound to a solid support and the mobile phase is a gas . A partition process occurs In gas-solid chromatography: Utilizes a solid adsorbent as the stationary phase and an adsorption process takes place Technique of gas chromatography: In this technique the sample is introduces in to the moving carrier gas stream and is carried by it through the column. The column contains either the active solid or a liquid of low vapour pressure held upon an inert solid. The active solid or non volatile liquid act as stationary phase whereas the carrier gas acts as mobile phase. The components of mixture sample distribute between two phases. The solubility or adsorption possessions might vary from component to component and therefore the components are carried along the column at different varies and finally emerge at the outlet of the column in distinct zones separates by the carrier gas. On rising the vapours of the constituent are detected by suitable detector accompanied by an automatic recording. Gas chromatographic appearances consists of Carrier Gas: Ex: Hydrogen, Helium Flow regulators and flow meters Ex: Rota-meter, soap bubble meter Injection devices: Columns Depending on its use:- Analytical Column Preparative Column Depending on its nature Packed column (Placed column are described as analytical column) Open tubular column Support coated open tubular column Temperature control devices Detectors ex: Katharometer Flame ionization factor Argon ionization factor Electron capture factor Recording and integrators Applications of GC: For qualitative analysis Quantitative analysis It is used for finishing of impurities present in the samples It is used for the separation and identification of lipids, carbohydrates, proteins, flavours, preservatives, colorants in food as well as vitamins steroids It is used for converting the non-volatile compounds in to volatile compounds by derivatization method. It is used for the determination of solvent residues or solvent if crystallization HPLC: The course of action of high performance liquid chromatography was developed in the late 1960s. The attitude of high performance liquid chromatography is so called because of its improved performance when compared to classified column chromatography. It is also described as high pressure liquid chromatography. Advantages of HPLC: There is ease of sample introduction and sample preparation There is speed of analysis Te analysis by HPLC is specific accurate and precise. It is used for the analysis of many polar, ionic substances, metabolic products and thermo-labile as well as non-volatile substances. Principles of HPLC: The technique is based on the same modes of separation as classified column chromatography i.e. partition, ion-exchange, adsorption and gel permeation, but it vary from column chromatography in that the mobile phase is pumped through the packed column under high pressure. Apparatus: the mode of operation of this system is isocratic i.e. one partition solvent or mixture is pumped throughout the analysis. For some determinations the solvent composition may be altered gradually to give gradient elution. Pumps: pumps are mandatory to distribute a stable flow of mobile phase at pressures varying from 1 to 550 bar. They are two types of pumps: Mechanical pumps: if the reciprocating piston type give a pulsating supply of mobile phase Dual piston reciprocating pump produce the two pistons are carefully phased so that simultaneously is filling the other is pumping. Injection systems: Injection ports are of two fundamental types Those in which the sample is injected directly in to the column Those in which the sample is deposed prior to the column bay and then swept by a valving action in to the column by mobile phase.
Tuesday, November 12, 2019
Pride and Prejuice :: Jane Austen
SUMMARY OF PRIDE AND PREJUDICE Pride and Prejudice is a story of Mr. and Mrs. Bennet and their five unmarried daughters---Jane, Elizabeth, Marry, Kitty, and Lydia. Mr. and Mrs. Bennet are desperate to see them all married. News is that a wealthy young gentleman named Charles Bingley has rented the estate of Netherfield Park near the Bennet estate. Mr. Bennet decides to make a special visit to Mr. Bingley to talk about his eldest daughter Jane. The Bennets attend a ball where Mr. Bingley is present and is taken by Jane and spends the whole night dancing with her. Mr. Bingley brought with him his friend, Mr. Darcy. Mr. Darcy is arrogant and not very pleased with the evening and out of arrogance, refuses to dance with Elizabeth. At many social events over an amount of weeks, however, Mr. Darcy finds himself more and more attracted to Elizabeth. Jane?s friendship with Mr. Bingley also continues to grow, and Jane finds herself going to visit Mr. Bingley at his mansion. On her way to the estate she gets caught in the rain and gets very ill forcing her to stay for many days. In order for Elizabeth to go get Jane she has to hike through the fields getting her clothes dirty. When she arrives to the estate, Miss Bingley notices that Darcy, whom she likes, pays quite a bit of attention to Elizabeth. When Jane and Elizabeth return home, Mr. Collins, a young clergyman who stands to inherit Mr. Bennet?s property, is there visiting their household. During his stay with the Bennet?s, he makes a marriage proposal to Elizabeth. She turns his offer down and injures his pride. Meanwhile, the Bennet girls have made friends with the military officers stationed nearby. One of those military officers is Wickham, a handsome young soldier who likes Elizabeth and tells her how Darcy cheated him out of an inheritance. Disappointing Jane, the Bingleys and Mr. Darcy left their estate and returned to London at the beginning of winter. Furthermore, Elizabeth receives appalling news that her best friend Charlotte Lucas is engaged to Mr. Collins. Charlotte explains to Elizabeth that she needs the match for financial reasons and marries Mr. Collins. As winter continues, Jane visits the city in hope to see Mr. Bingley instead Miss Bingley visits her first. While Miss Bingley?s visit was very abrupt, Mr. Bingley never shows up. The marriage search for the Bennet girls appears hopeless.
Sunday, November 10, 2019
My Beloved Charioteer Essay
Shashi Deshpande is an award-winning Indian novelist. Shashi Deshpande makes gender central to her writing. In her story ââ¬Å"MY BELOVED CHARIOTEERâ⬠she tries to the show the relationships of grandmother, mother and daughter at various stages of life. It is a story of a mother daughter relationship as well as a womenââ¬â¢s role as a wife. Mother and daughter relationship is like sisters or sparring partners. They care for each other. My Beloved Charioteer depicts the life of motherââ¬â¢s nature and behavior not as generosity but as a normal human being full of negatives as well as positives, full of emotions as well as frustrations and not a perfect being. My Beloved Charioteer by Shashi Deshpande is based on the three generations, three women i.e. grandmother, mother and daughter and three different mindsets living together. Grandmother being the oldest one and the one who takes care of each and everyone in the house. Mother named Arti the daughter of grandmother a depressed lady as for whom she cared and loved have died. She loved two persons that is her father and her husband has both died. She is now the most irritated person in the house and she spends her most of the time smoking and looking at the walls of her room. She doesnââ¬â¢t talk to anyone neither to her daughter Priti and nor to her mother. She evens scolds priti for no reason .She is so much entangled with the past that her present is neglected. The daughter named priti the youngest and the most energetic character. Her father and grandfather had both died. Her mother doesnââ¬â¢t talk to her. Her caretaker and her best friend in the house is her grandmother (Ajji). When Priti is gone silence settles in the house. The relation between the Arti and Priti is not too good in the story. Arti is depressed, sad, unhappy, and is in pain. She doesnââ¬â¢t do any work, which a mother should do for her daughter and for her aged mother. She doesnââ¬â¢t talk to Priti; play with her however she scolds Priti at times to show her anger, outrage and displeasure. Because of her nature grandmother Ajji have to take care of Priti, she acts like her mother. She wakes her, she dresses her for school, make breakfast for her. It is shocking to seeà that at this age also Ajji does all the work and she even doesnââ¬â¢t complain. The relationship of Arti and Priti is not good whereas the relationship between Ajji and Priti is good. Ajji once insist Arti to go out of house like park whereas in reply she says that seeing other people happy she wanted to kill and bury their happiness. This shows one of the natures of depressed lady. Ironically Ajjiââ¬â¢s husbandââ¬â¢s room offers her the opportunity to find her voice, rebel against her daughter and break the silence that threatens to destroy her home and her granddaughter. The photo frame that was broken accidently by Arti gave a chance, which helped Ajji to talk to her and to explain her that what gone is gone. Ajji is also holding the pain of her husband but on the other hand she is managing and not running from her problems and fears. Priti has a daughter and she need to take care of her. Ajji also says that she does not want to ever see the photograph again as it is no point of seeing things which gives pain and discomfort. Arti needs to be happy at which she got rather than things, which she doesnââ¬â¢t have. Hence through this story Shashi Deshpande elegantly brings out the mother/daughter relationship on different stages and aspects of life.
Friday, November 8, 2019
Dear. Mr. President Essay
Dear. Mr. President Essay Dear. Mr. President Essay Dear Mr. President, I am writing you about a problem that's very important to me and millions of Americans across the country. Global Warming is one of the biggest problems in human history and the destiny of our planet is in our hands. If nothing is done, horrible things will happen, for example, Antarctica's animal population is decreasing. Also, the environment is changing because of constant temperature changes caused by the greenhouse effect. Antarctica's animal population is moving and ending their hibernation's early. The polar bears are thinner and less healthy than those of 20 years ago. Many of fish are moving northward to find colder water, so that they can survive and produce offspring. This is happening because the rays of the sun get through the ozone layer melting the icecaps making the water heat up. The marmots end their hibernation three weeks earlier than usual because of the warm weather. We should care because if all these things are happening to the animalââ¬â¢s maybe they will eventually happen to us. I am also concerned about the environment changing because of constant temperature change, caused by the Greenhouse Effect. The Greenhouse Effect is important. Without the Greenhouse effect, the Earth would not be warm enough for humans to live. But if the Greenhouse effect becomes stronger, it could make the Earth warmer than usual. Even a little extra warming may cause problems for humans, plants, and animals. So, Mr. President, Global
Wednesday, November 6, 2019
Free Essays on Black Soldiers in the Civil War
The American Civil War was a conflict between the Union and the Confederacy. It was a war between the states. The North was fighting to abolish slavery and the South was fighting for their independence. During the war, roughly three million people fought for their cause. The majority of these three million soldiers are sung heroes. However, there are still those heros who people are unaware of. One rarely hears about these unsung heroes who were of tremendous assistance to the cause. These heroes are the southern slaves who became soldiers and joined the Union Army. Although many do not know of their role, the black soldiers played a very significant part in the American Civil war. There were many different black regiments that took part in the fight for freedom. Some examples of such regiments were the 54th Massachusetts, the Black Brigade of Cincinnatti, and the First Regiment South Carolina Volunteers. In addition to these, there were also countless others. Hundreds of thousands of black men wanted the chance to fight for their freedom. The 54th Massachusetts was organized in March of 1863 at Camp Meigs, Readville, Massachusetts by Robert Gould Shaw. This was one of the first all black regiments formed. Free blacks from the north, particularly Massachusetts and Pennsylvania, made up this regiment. The main sacrifice made was life. Soon after being formed, the 54th engaged in battle at Battery Wagner. There was over 250 men killed. Included was the founder Colonel Shaw, who died on the crest of the enemy parapet shouting, ââ¬Å"Forward, Fifty-fourth!â⬠2 Several other members of the 54th either risked or lost their lives. One such person was Sgt.! William H. Carney. He received the Medal of Honor for risking his life in action. His actions were described as follows: ââ¬Å"When the color sergeant was shot down, this soldier grasped the flag, led the way to the parapet, and planted the colors thereon. When the troo... Free Essays on Black Soldiers in the Civil War Free Essays on Black Soldiers in the Civil War The American Civil War was a conflict between the Union and the Confederacy. It was a war between the states. The North was fighting to abolish slavery and the South was fighting for their independence. During the war, roughly three million people fought for their cause. The majority of these three million soldiers are sung heroes. However, there are still those heros who people are unaware of. One rarely hears about these unsung heroes who were of tremendous assistance to the cause. These heroes are the southern slaves who became soldiers and joined the Union Army. Although many do not know of their role, the black soldiers played a very significant part in the American Civil war. There were many different black regiments that took part in the fight for freedom. Some examples of such regiments were the 54th Massachusetts, the Black Brigade of Cincinnatti, and the First Regiment South Carolina Volunteers. In addition to these, there were also countless others. Hundreds of thousands of black men wanted the chance to fight for their freedom. The 54th Massachusetts was organized in March of 1863 at Camp Meigs, Readville, Massachusetts by Robert Gould Shaw. This was one of the first all black regiments formed. Free blacks from the north, particularly Massachusetts and Pennsylvania, made up this regiment. The main sacrifice made was life. Soon after being formed, the 54th engaged in battle at Battery Wagner. There was over 250 men killed. Included was the founder Colonel Shaw, who died on the crest of the enemy parapet shouting, ââ¬Å"Forward, Fifty-fourth!â⬠2 Several other members of the 54th either risked or lost their lives. One such person was Sgt.! William H. Carney. He received the Medal of Honor for risking his life in action. His actions were described as follows: ââ¬Å"When the color sergeant was shot down, this soldier grasped the flag, led the way to the parapet, and planted the colors thereon. When the troo...
Sunday, November 3, 2019
Short Writes Article Example | Topics and Well Written Essays - 500 words - 1
Short Writes - Article Example Katie Fallon argues over priorities, she believes that people must feel accountable for disturbing the natural balance in the wake of temporary economic gains. Coal mining is centuries hold occupation for people living in West Virginia. Coal is definitely an energy efficient fossil fuel, but the side effects that it leaves on the environment, and the health of the people challenges its usefulness. Almost 95% of the power generation in West Virginia is carried out by burning of coal, whereas the overall contribution of coal in energy production is 35% nationwide. Therefore, the author believes that people should unite and take a step in preserving and protecting the water bodies in Western Virginia. Definitely, burning of fossil fuels and other associated industrial activities has damaging effect on the environment. Katie Fallon is right when she blames the inhabitants of West Virginia for showing irresponsibleness. Her desire for the restoration of West Virginia is valid, because the scenario that has been express by the author is more than just alarming; it appears as an emergency situation that demands emergency measures. To further elaborate her arguments, Katie Fallon have used a narrative style; all the clauses of her arguments are more or less first hand experiences. Since, she is the inhabitant of that place her concerns for the upcoming generations of West Virginia are understandable. She claims that her ancestors were involved in coal mining, however, she argues that the times have changed, and so has the technology, therefore, the people need to accept the mistakes that they have committed in the past, and they should look towards restoration. Overall the article cannot be rated as 100% convincing, there were a few loop holes in the text, moreover, at times while reading this blogpost it seems that there are few missing junctions in the article. However, Katie Fallon has been successful in conveying her message, and the data
Friday, November 1, 2019
Israel and the Middle East, Jerusalem center for public affairs Research Paper
Israel and the Middle East, Jerusalem center for public affairs - Research Paper Example Not if it is your own history; remarked Abdullah and continued saying; and you have a brother lost in it. Oh, I am sorry to hear about your bother, I have lost quite a number of my friends and family members and I know how it feels like. But what history are your reading? Asked Paul. Well, it is the history of Palestine and Israel. So, you must be a Palestinian. Not, Exactly, My father is from Palestine but my mother is Egyptian, I was born and grew old in Egypt. Now, my father wants me to leave for Palestine and lay my life for Jehad, which I do not understand why is going on. All the bloodshed and the stories of war have always intrigued me to find out what actually is going on, why are people fighting over a small piece of land when they both can live peacefully. Paul has understood the point and with a small smile asked; what is your name? Abdullah. Listen Abdullah, It is not just a matter of land between the Israelis and the Palestinians. It is all about religion, it is about le gacy and it is about home, not for one but for both sides. How long have you been reading the book? About two hours. And what did you read? Not much, all the stories that I have heard and what I see in the news channels and what I have read in the book may seem easy to read and listen to, but not that easy to digest. It all becomes contradicting. Everyone seems to be on the right side of the gun and then everyone seems to be doing wrong. It is all mixed up. I do not know why exactly did my brother die. Was it for right or just a waste of life. Hmmmâ⬠¦. Tell me what you have read and what you know then I might be able to help clear up the confusion you are having, Paul said. Well, first of all the Jews lived in this region, then the region was over taken by the Muslims under whom the... The Jews did not ask the Muslims to leave at first, but after the war, the Muslims were rioting all the places, the Jews had not other choice other then ask them to leave, Commented David. What do you think is the solution to all the blood shed that is going on now in these states. There are lives on both sides that are being wasted, asked Abdullah. The solution my friends lie in the commitment to mutual peace. Both sides have to come to common terms and conclude peace and that is only in the forms of accepting the recommendations of the UN. But both sides are adamant on wanting the complete land which I believe is not ever possible. The result will be that the blood shed will continue on the both sides. Until and unless both the communities do not talk on the humanitarian basis this, all will remain for the next generations to suffer. The only way out is speaking above religion, above ego and above nationalism and the peace will prevail. It is not what I feel, it is what I have seen , concluded Paul.
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