I am Intrigued with Psychological Research and College Instruction :: Graduate Admissions Essays

I am Intrigued with Psychological Research and College Instruction. Â   Having enjoyed psychology-related activities in both the academic and community settings, it is with enthusiasm that I pursue a career in clinical psychology. An important part of this pursuit is attending graduate school. In order to obtain the necessary knowledge and to define my areas of interest, I wish to enroll in a doctoral program in clinical psychology. Â   Throughout my undergraduate work I have engaged in a variety of activities to help prepare my for graduate study. One such activity is my involvement in research. This past summer I participated in a research project with a UNI professor, Dr. Augustine Osman. Our research involved the examination of the psychometric properties of the Pain Anxiety Symptoms Scale (PASS) in a community sample. I performed basic data entry and ran SPSS-X programs for manova, correlation, and reliability. For two to three hours a day, over an eight week period, my research experience involved discussions on issues of psychometrics as well as learning how to transcribe and run several programs used in factor analysis. Through this experience I have also become familiar with the process of research revision and publication. In fact, I will be listed as a co-author upon publication of this work. Â   Currently, I am involved in an independent research project investigating sex-role stereotyping in college classrooms. My advisor, Dr. Jane Wong, has been supervising by progress. After completing background reading on this issue, I have decided to investigate the relationship between students' sex-typed characteristics. I have developed six scenarios in which I manipulated the sex-typed characteristics of the instructor. Students will be asked to complete the Bem Sex Role Inventory and the Traditional Egalitarian Sex Role Scale (TESR) prior to reading a scenario. After reading the scenarios they will be asked to rate the instructor using a rating form developed by Leventhal, Perry, and Abrami (1977). I hope to present my findings at a regional psychology conference and, if possible, submit the work for consideration for publication. Â   Aside from conducting research, I also have had the opportunity to experience the teaching aspects of psychology while serving as a teaching assistant for a Research Methods course and an Introduction to Psychology course. As a TA for Research Methods my responsibilities included supervising five students' research work. Specifically, I assisted the students in the library while they worked on a bibliography, summary and synthesis, and proposal project.

Could Russia Have Defeated Japan in the Russo-Japanese War?

This essay will examine Russia's advantages and disadvantages pre-war, war and post-war that could have changed the course of history and enabled Russia to defeat Japan in the Russo-Japanese War. Russia, despite major advantages in resources, military personnel, naval forces, and strategic depth, lost the Russo-Japanese War to Japan, a rising power whose military strength and power were grossly underestimated. Why? What could Russia have done differently to defeat Japan in the war? Summarizing and analyzing the advantages and disadvantages of Russia’s poor leadership, lack of strategic planning against Japan, and logistical differences will help clarify what it did wrong and what it could have done to defeat Japan in 1904. Diplomatic and economic factors before and during the war In 1854, Japan had reopened her doors to the United States, the United Kingdom, and Russian after 200 years of isolation from all Western powers, except the Netherlands (Koda 12). Of these powers, Britain and Russia had the strongest impact on the national security policy of the Japanese government. By the 1890s, given the growing competition among European Powers in Asia, Japan had begun to implement policies to increase the nation’s military and economic modernization. They recognized that failure to do so would lead to the â€Å"nation’s dominance or dismemberment† by foreigners (Francis 1). Between 1888 and 1904, the Russian Empire’s economy was booming. As the financial heath of the government improved, it can be expected that the Minister of War would be allowed to share in this bounty. The Ministry was able to fund two discrete rearmament programs: the acquisition of magazine rifles and the introduction of the first quick-firing field artillery piece (Fuller 363). Both programs helped enhance and put Russia at an advantage in military readiness and innovation compared to other powers within the region. In 1894, Russia had a new Tsar in Nicholas II, who was â€Å"young, dreamy and ambitious†Ã¢â‚¬ ¦ and noted by biographers as â€Å"a weak man and easily led† (Fuller 370). Another important figure to Russia’s government was Count S. Iu. Witte. Witte, the Minister of Finance, 1892-1903, rapidly became one of Nicholas’s most influential ministers in the early part of his regime as Tsar (Fuller 370). Witte was the prime mover of the Trans-Siberian and Chinese Eastern railroads, which allowed Russia to become a monopoly over resources and markets of Manchuria (Fuller 370). In March 1900, War Minister Kuropatkin delivered a speech in which he summarized the ways in which Russia had used its' military power in the past two hundred years and a series of predictions on upcoming challenges the nation would have to face. He argued that Russia â€Å"neither needed nor desired war with any of the other Great Powers; it simply had nothing to gain by it† (Fuller 377). Yet, Russia was not a satisfied Power and in a report to the Tsar, Kuropatkin had to endorse the continued economic exploitation of Manchuria and the expansion of Russia influence in the East (Fuller 378). Moreover, Russia had concluded an alliance with China against Japan and, in the process provided the finance China needed in exchange for railway and industrial monopolies and won rights to extend the Trans-Siberian Railroad across Chinese-held Manchuria to the Russian seaport of Vladivostok, thus gaining control of an important strip of Manchurian territory (Warner 113). Unfortunately, the unfinished state of the Trans-Siberian railroad in 1904, logistical problems, and heavy costs meant only about 100,000 Russian troops and supporting units had been deployed to the Far East. However, this continuous crash collusion over the â€Å"spheres of influence† in Manchuria, Port Arthur, and finally in 1903 when Russia developed an economic interest in Korea further exasperated Japan (Koda 16). Start of the War The Russo-Japanese War took place from February 1904 to September 1905; it was a war that originated out of rival imperial ambitions of the Japanese and Russian Empires over Manchuria, Port Arthur, and Korea. The Russians had been pursuing a course of steady aggression and contrary to what Japan considered her â€Å"vital interests and national honor† (Mahan 172). The Russians had countless chances to gain an advantage and a better diplomatic position over Japan. After negotiations back and forth concerning â€Å"spheres of interest† between the two nations were not met and in Japanese eyes were ignored due to the arrogance of the Tsar; Japan severed diplomatic relations on 6 February 1904 (Answer. com). Late at night on the 8th of February, a force of Japanese torpedo boats entered into Port Arthur. Through the dense fog, they launched a surprise attack that not only surprised the Russian naval squadron, but also surprised the world. Only one ship, the Novik, was not caught entirely napping and was able to give chase (Warner 17). Three of Russia’s biggest ships took severe hits: the cruiser Pallada, Retvizan and Tsarevitch (Warner 17). Russia was shocked and definitely not prepared! Although gunfire stirred some in the evening, many knew nothing of the attack until the next morning. Some had heard and assumed that the fleet had been carrying out exercises and few people â€Å"expected that the first attack by Japanese- or any attack at all- would take place in Port Arthur† (Warner 17). Crafting a War Plan The Commander of Russia’s Far Eastern Armies, General Kuropatkin was tasked with developing Russia’s war plan; his idea was to deny Japan an early victory by alternating tenacious holding actions and strategic withdrawals in order to gain the time needed to bring thousands of additional troops from European Russia (Fuller 379). â€Å"Inso far as possible,† he wrote, â€Å"our forces must avoid decisive engagements in order to escape being defeated in detail prior to concentration of forces sufficient for the defeat of the Japanese† (Fuller 400). He expected the Japanese to invade Manchuria, they did; he anticipated that the Japanese would attack Port Arthur, they did; so, his plan was absolutely accurate and unquestionably foreboded the events that were about to unfold in this Russian nightmare. But no matter how intelligent or administratively talented Kuropatkin may have been, he committed the gravest of errors by underestimating his enemy. The Japanese army was highly motivated and trained and ready to implement their war plan. In an attempt to avoid war, Japan presented Russia with a treaty that would be relatively fair to both sides. Russia, to the surprise of no one, declined the terms and Japan was left with no choice other than to declare war. In July 1903 at pre-war negotiations, the Japanese Minister in St. Petersburg as instructed to present Russian Minister, Roman Rosen, with his country’s views and desires. After the proposal, Russia provide a counter-proposal and Japan provided another proposal by which â€Å"Manchuria would be outside the Japanese sphere of influence and, reciprocally, Korea outside Russia’s† (Answers. com). One month later on 4 February when no formal reply had been received, Japan severed ties and went about achieving everything that they asked for at the pre-negotiations. According to Karl von Clausewitz, a renowned theorist of war, two parties need to want peace for a war to be terminated and both sides must be able to overcome internal and external oppositions to end the war. Because of Russian leaders’ incompetence, arrogance, and inability to respond promptly and compromise negotiations, Japan’s pre-war requests and Kuropatkin’s predictions of Japan’s war strategy were developing in what would be known in history as the Russo-Japanese War. Elements of the Land Campaign At the outbreak of the war, Russia had the world's largest standing army, but most of it was in Europe. The Japanese knew that Russia could not fully concentrate its’ army in the Far East because â€Å"it had to keep some forces in western Russia as a counter to Turkish, German, and Austrian forces† (Koda 22). Russia was not ready for the war with Japan, and the Japanese knew it. All Japan had to do was concentrate its’ forces in Manchuria and match the strength of Russian forces there. For the Japanese to establish superiority, they had to overcome their handicaps: shortage of strategic reserves, an insufficient stockpile of ammunition, and poor field heavy artillery (Koda 23). In order to overcome these handicaps, Japan had a well thought out operational plan and effective tactics on the battlefield, which yielded perfectly to the warfare of Manchurian plain. In my opinion, all Russia had to do was delay Japanese forces while they built up their strength in the west and bring forces south from the Chinese Eastern railway. Without the Trans-Siberian Railway to assist in reinforcing Russian forces, Russia would be left without â€Å"a real plan of campaign† (Warner 319). Therefore, the longer the war went on, the more likely an eventual Russian victory would have been in a battle of industrial attrition due to the continuing flow of reinforcements along the railway. Synchronizing ground and naval efforts Japan had to deliver a severe blow before Russia had time to prepare and execute whatever war plan that they may have established. In the words of Admiral â€Å"Bull† Halsey, Japan needed to â€Å"Hit hard, hit fast and hit often. † In March the Japanese landed an army in Korea that quickly overran that country. In May another Japanese army landed on the Liaotung Peninsula, and on May 26 it cut off the Port Arthur garrison from the main body of Russian forces in Manchuria. Russia needed to stop playing on the defense and start being on the offensive. With the help of reinforcements received via the Trans-Siberian Railroad, Russia continued attacks, but it proved indecisive owing to poor military leadership. An example of the Russian’s impotence in leadership occurred at the siege of Port Arthur. After believing that the purpose of defending the city was lost due to the defeat of the fleet, Major General Stessel decided to surrender his post without consulting the other military staff present, or the Tsar and the military command. All disagreed with his decision because the garrison was still well stocked and had months of food and ammunition. In 1908, Stessel was convicted by a court-martial and sentenced to death, though later pardoned for his offenses (Answer. om). More aggressive naval power The Japanese Combined Fleet was slightly superior to the Russian Pacific Fleet (Koda 22). Japan was at an advantage to Russia, because Russia’s fleet had to be divided in two forces, one at Port Arthur and the other at Vladivostok (Koda 22). The fleets at Port Arthur and Vladivostok were also smaller and less ready, which left Russia's land and naval forces outnumbered at the start of the war. Japan’s strategy was to engage each force separately and prevent any Russian reinforcements. Japan’s Combined Fleet had to destroy the Pacific Fleet before the arrival of reinforcements and it was necessary for Admiral Togo â€Å"to preserve his strength, to ensure that he had a fleet capable of destroying the reinforcements when they arrived† (Koda 23). The Russian fleet in Port Arthur presented a menace to the sea lines of communication for Japan and was a determining factor of the war. The attack, although successful, was not executed as planned. It continued long enough to afford Russia the opportunity to bring into play her other naval forces from the west and if other circumstance would not have accorded, may have caused Japan their victory. For example, the Baltic Fleet was on its last leg of its 18,000 nautical mile journey to Vladivostok, when they were spotted by the Japanese Combined Fleet. The Baltic Fleet had been successfully traveling at night to avoid discovery. Unfortunately, one of her hospital ships exposed a light, which was sighted by a Japanese ship. The ship reported the sighting to Admiral Togo, who was able to position his fleet and engage in the battle of Tsushima. The Russian fleet was annihilated at Tsushima. If the Russian fleet would have positioned their cruisers, designed for speed and endurance, at Vladivostok, Russia would have had a better chance at counter-attacking Japan’s fleet. Unlike Port Arthur with only one way in and out, Vladivostok had two exits, to the Japan Sea and to the east coast of the islands by way of the Tsugaru Straits. The Japanese vessels out numbered the Russian vessels and they probably would have still picked off the Russian vessels one by one, but positioning the cruisers at another port would have allowed for continued freedom of commerce. Although this is an indirect effect to the war, it directly affected the already unstable economy and a growing rebellious status to war efforts in Russia. One of the most important things to remember is not just the multiple locations of the Russia fleets, but that they were divided into fractions individually smaller than those of a possible enemy. If the Russian divisions at Port Arthur, Vladivostok, and in the European ports of Russia would have been united, they would have outweighed the Japanese fleet; hence causing the Japanese fleet to re-evaluate their plan and possibly changing the course of the war. Additionally, Admiral Makarov, Commander of the Baltic Fleet, suggested that more ships should assist the Port Arthur and Vladivostok, but with his death a conference of the Higher Naval Board with the Tsar presiding was needed. For the next three months, the new commander, Admiral Rozhdestvenski, struggled with â€Å"the inevitable tangle of Russian red tape† and prepared his fleet for the long journey and they set sail in October of 1904 (Warner 402). The Baltic fleet should have been sent east the instant the Japanese declared war and would have arrived in ample time to assist and been able to provide much needed reinforcements and a more aggressive naval power. Conclusion Despite Russia’s major advantages in resources, military personnel, naval forces, and strategic depth, they lost to an up and coming power, Japan. Furthermore, they could have negotiated out of starting a war, and never have been put in a situation that caused undue hardship on their ill-prepared naval and land forces. If it wasn’t for poor leadership, lack of strategic planning, and logistical differences, Russia could have defeated Japan in the Russo-Japanese War.

How to Conduct a Flame Test - 1174 Words

Flame Test Lab Your company has been contracted by Julius and Annette Benetti. They are worried about some abandoned, rusted barrels of chemicals that their daughter found while playing in the vacant lot behind their home. The barrels have begun to leak a colored liquid that flows through their property before emptying into a local sewer. The Benettis want your company to identify the compound in the liquid. Earlier work indicates that it is a dissolved metal compound. Many metals, such as lead, have been determined to be hazardous to our health. Many compounds of these metals are often soluble in water and therefore easily absorbed into the body. Electrons in atoms jump from their ground state to excited states by†¦show more content†¦BaCl was most likely present in the rock. 6. How would you characterize the flame test with respect to its sensitivity? Give a reason why the flame test is sometimes invalid. The flame test could possibly read invalid if there is still a trace of the previous substance still in the burner or if there is a trace of the substance in the current substance that is being tested. 7. Based on your results and observations would this method be practical to determine the metals in a mixture? If not, why not. Explain your answer. Based on my results and observations this method would not be practical to determine the metals in a mixture because you wouldn’t know which color is for which substance in the mixture. 8. Using the information learned about what color would you predict that copper nitrate would burn? Explain your answer. I think copper nitrate would burn at a blue/green color, because during the flame test copper burned at a blue/green color. 9. Some stores sell â€Å"fireplace crystals.† When sprinkled on a log, these crystals make the flames red, green, and violet. Explain how these crystals can change the flame’s color. What ingredients do you expect them to contain? These crystals can change the flame’s color because they contain different substances that burn at different colors. I expect the ingredients in them are Barium and Strontium. 10. Using the rules you have learned on orbital fillingShow MoreRelatedCorrelation Between A Cell And Its Background1264 Words   |  6 Pagessubtilis, and Staphylococcus aureus. Materials: - Microscope slides - Kem Wipes - Broth of Escherichia coli - Broth of Staphylococcus aureus - Broth of Bacillus subtilis - Inoculating loop - Bunsen Burner - Rope connector for Bunsen Burner - Test tube rack - Wax pencil - Stain (methylene blue) - Compound Microscope - Clothes pin Procedure: 1. First and most importantly, hands and work area were sanitized with antiseptic and paper towel. 2. 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The Hunger Games The Capitol - 851 Words

In The Hunger Games the Capitol is a place of vast wealth while the districts especially the districts of eleven and twelve are living in poverty. This wealth that the Capitol has it a type of social control because it keeps the districts from being able to gain the ability to fight back against the Capitol due to their poverty status. The poverty in the districts is so bad that Katniss Everdeen from District Twelve requires that she break a law of the Capitol’s, which is not leaving the fenced area. She does this in order to keep her and her family from starving to death. Katniss states, â€Å"Technically, Gale and I could be whipped on a daily basis for poaching in the woods† (Collins 202-203). This poverty is also seen in District Eleven when Rue says, â€Å"I’ve never had a whole leg to myself before† (202). Rue also talks about how they grow food but they are not allowed to eat it. (202) The Capitol makes it illegal to go outside the Districts because it could lead to the Districts to banding together and creating another rebellion and it is a means for Katniss to keep herself fed without relying on the Capitol to survive from starving to death. This is an issue of social control the Capitol is deliberately keeping the Districts hunger to have ultimate power over them. They also have a system called a tesserae which allows the children who are eligible for the reaping to get a â€Å"year’s supply of grain and oil for one person† (13). They get his if they put their names in theShow MoreRelatedThe Hunger Games Trilogy1719 Words   |  7 PagesHirschhorn Essay 10/16/12 The trilogy of The Hunger Games written by Suzanne Collins, focuses on a country that is being controlled by an oppressive government and the people who are fighting against it for their freedom. Although the odds are against the rebels, they continue to combat tyranny at the risk of their own lives. 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Tom ************ Soc 101 11/17/13 Introduction The nation of Panem has risen out of the ravaged ruins of what was once known as North America. 74 years ago, the poverty-stricken districts of Panem rebelled against the wealthy, controlling the Capitol. After its crushing victory, the Capitol devised the Hunger Games as an annual reminder to the twelve districts of its authority, and as continuing punishment for the rebellionRead MoreEssay about The Hanger Games by Suzanne Collins983 Words   |  4 Pages‘The Hunger Games’. This intense novel is set in a time period after a rebellion in North America left the country destroyed, divided into 12 districts and being controlled by the Capitol. Katniss Everdeen is the main protagonist and is from the poverty stricken district 12, completely opposite from the Capitol which is the place that is rich in wealth and power over the 12 districts. 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The Emperor Of The Flavian Dynasty - 2990 Words

Domitian was a Roman emperor from 81 to 96, and was the third and last emperor of the Flavian dynasty. Domitian s early career was spent in the shadow of his brother Titus. This continued under the rule of his father Vespasian, who became emperor in 69 following the civil war, which is known as the Year of the Four Emperors. While Titus held many offices under the rule of his father, Domitian received honors but no responsibilities. When Vespasian died in 79 he was succeeded by Titus, whose own reign came to an unexpected end when he was struck by a fatal illness in 81. The following day Domitian was declared Emperor by the Praetorian Guard, beginning his reign that lasted fifteen years. As Emperor, Domitian strengthened the economy by†¦show more content†¦After Domitian died, the senate tried to erase all memory of his existence, while senatorial authors like Suetonius published histories making Domitian seem like a cruel tyrant. Modern history has rejected these views, instead characterizing Domitian as a ruthless but efficient autocrat whose cultural, economic and political program provided the foundation of the peaceful 2nd century. Early Life Domitian was born in Rome on October 24, 51, and was the youngest son of Titus Flavius Vespasianus, commonly known as Vespasian. He had an older sister, Domitilla the Younger, and brother, also named Titus Flavius Vespasianus. The Flavians rose to prominence in just four generations, acquiring wealth and status under the emperors of the Julio-Claudian dynasty. Domitian s great-grandfather, Titus Flavius Petro, had served as a centurion under Pompey during Caesar s civil war. However, his military career ended in disgrace when he fled the battlefield at the Battle of Pharsalus in 48 BC. Petro managed to improve his status by marrying the extremely wealthy Tertulla, whose fortune guaranteed the upwards mobility of Petro s son Titus Flavius Sabinus I, Domitian s grandfather. Sabinus gained further wealth and possible equestrian status through his services as tax collector in Asia and banker in Helvetia. By marrying Vespasia Polla he allied the Flavian family to the more prestigious gens Vespasia, ensuring the elevation of his sons Titus Flavius Sabinus II and Vespasian to

Application of Fluorescence Spectroscopy Free Essays

Application of Fluorescence Spectroscopy in Chemical Oceanography: Tracing Colored Dissolved Organic Matter (CDOM) Erika Mae A. Espejo 3rd year, BS Chemistry, University of the Philippines, Diliman Abstract Dissolved organic matter (DOM), the fraction passing through a 0. 45 Â µm membrane filter, is considered poorly understood mixture of organic polymers because of its complexity. We will write a custom essay sample on Application of Fluorescence Spectroscopy or any similar topic only for you Order Now Although it largely influences a lot of biogeochemical processes in aquatic environments, its characterization is not that simple. However, due to the fact that it comprises optically active fraction called colored dissolved organic matter (CDOM) together with the help of its colloidal components, tracing of DOM can be possible. Through different methods and instruments such as fluorescence excitation-emission spectroscopy, parallel factor analysis (PARAFAC), isolation-fractionation technique (pairing of fluorescence and absorbance spectroscopy), and satellite remote sensors, analysis of DOM can be done which can help elucidate its dynamics in aquatic environments. Introduction When a molecule absorbs light (energy), an electron is excited and promoted to an unoccupied orbital. Figure 1 shows a Jablonski diagram which describes what happens when an electron is excited: Fig. 1 Jablonski diagram The energy difference between the ground (S 0) and excited singlet states (S1, S2 or higher) determines the wavelengths at which light is absorbed. Absorption (excitation) can result in a range of transitions to various vibrational sublevels of excited singlet states, which is then followed by nonradiative relaxation to the lowest sublevel of the S 1 state, via vibrational relaxation and internal conversion. Internal conversion, singlet–triplet intersystem crossing and fluorescence then compete for relaxation to the ground state (S 0). The wavelength of the fluorescence emission is determined by the difference in energy between S1 and S0 states. The greater the conjugation in the molecule, the lesser the difference in energy resulting in a longer wavelength of fluorescence. Discussion The fraction passing through a 0. 45 Â µm filter includes material in true solution, together with some colloidal components, and is termed dissolved organic matter (DOM). It could be autochthonous/external (from degradation of terrestrial plant matter which is dissolved and transported through river systems and estuaries to the marine environment), or allochthonous/internal (from exudation by phytoplankton, excretion by zooplankton, and post-death organism decay process). DOM influences different aspects of aquatic environments like microbial and plankton (aquatic) ecology, trace metal speciation and transport, polycyclic aromatic hydrocarbons (PAHs) toxicity, trace water masses, mobilization of organic and inorganic pollutants, photo degradation, drinking water treatment, and carbon budgeting. This implies that tracing and characterization of DOM is essential to understand its dynamics; however, since DOM is a complex and poorly understood heterogeneous mixture of aliphatic and aromatic polymers, and its composition varies in time and space depending on proximity to sources and exposure to degradation process, characterization is arduous (involves large sample volumes and many stages) [4]. The optically active fraction of DOM (passing through a 0. 2 Â µm filter) is called the colored dissolved organic matter (CDOM). It absorbs ultraviolet and blue light radiation in 350-500 nm range and also fluoresces when excited by light . Its presence gives water a yellow/brown color (and often described as yellow substance or gelbstoff) and its light absorption is highest in the ultraviolet (UV) region and declines to near-zero levels in the red region of the spectrum [2]. It plays an important role in determining the underwater light fields, represents a significant component of ocean optical signals for satellite-based measurements of ocean color and can interfere in global and regional estimates of primary production; affects the ocean color, underwater light fields and aquatic chemistry through a suite of sunlight-initiated photochemical processes [3]. Thus, using spectroscopy, it can be used as a tracer for the characterization of the DOM pool. This review discusses four approaches in fluorescence spectroscopy for tracing CDOM. The first one is the Fluorescence Emission-Excitation Spectroscopy. Fluorescence excitationemission matrices (EEMs) are emission scans from excitations over a range of wavelengths (? ) which provide information on number, types and abundance of fluorophores present in CDOM [4] . It can also ifferentiate between CDOM of terrestrial and marine origin (marine CDOM has a fluorescence maximum at shorter wavelengths than terrestrial). For multivariate analysis of EEMs, Principal Component Analysis (PCA), a two-way data analysis method is used (for example 45 excitation ? times 150 emission ? equals 6750 variables). However, Stedmon et. al said that Parallel Factor Analysis (PARAFAC) is better suited to EEMs since it is a three-way version of the PCA where the data are composed into tri-linear components. Equation 1 describes the PARAFAC model (the second approach): xijk = ? ifbifckf + ? ijk (1) where xijk is the intensity of the fluorescence for the ith sample at emission wavelength j and excitation wavelength k, aif is directly proportional to the concentration (moles) of the fth analyte in sample I, b jf is linearly related to the fluorescence quantum efficiency (fraction of absorbed energy emitted as fluorescence), ckf is linearly proportional to the specific absorption coefficient (molar absorbtivity) at excitation wavelength k, F defines the number of components in the model, and a residual matrix ? jk represents the variability not accounted for by the model. Figure 2 and figure 3 show that the model reproduces the main features of the measured EEMs when they sampled in the east coast of Jutland, Denmark: This implies that PARAFAC modeling is an effective method of characterizing CDOM with EEMs. This approach was able to trace CDOM to help elucidate its dynamics: Stedmon et. al said t hat the model was successful in grouping the fluorophores present into groups with similar structure. They have found out that excitation at longer ? uggests that the fluorophores responsible for this fluorescence are more aromatic in nature or contain several functional groups, the ratio of fluorescence in this region (~500 nm) relative to the fluorescence at 450 nm, varies depending on the number of aromatic groups and, hence, the source of the material, and ratios twice as large in the estuary than in the terrestrial samples, suggests that the fluorescence is not only due to terrestrially derived matter but also CDOM produced/transformed in estuarine processes. As with the behavior of CDOM, results show that this approach distinguishing is capable between of CDOM derived from different sources since there are considerable differences in the composition of CDOM from sources of DOM. Table 1 shows the behavior of CDOM from different sources: Table 1. Behavior of CDOM from different sources High fluorescence intensity Low fluorescence intensity Lakes: there is a net production of ? Transported out of the forest and again autochthonous DOM during estuarine mixing (where the freshwater input from the stream mixes with the saline waters of the inner estuary) ? In freshwater: due to mixing (dilution), and degradation/transformation ? In forest stream: photochemical degradation due to exposure to sunlight (photochemical degradation bleaches the DOM fluorescence and causes the specific fluorescence to decrease) ? Results show that this approach enables us to establish relationships between general characteristics of the DOM pool and its fluorescent properties. The third approach is the isolation-fractionation based techniques ((ion-exchange resins, reverse osmosis, rotary evaporation, and tangential flow ultrafiltration). However this approach uses isolates which may not completely reflect the actual structure, behaviour, interactions and reactivity of DOM in the natural environment due to alterations in the structure of the DOM during extraction and concentration and due to their removal from the original environment in which they were situated. Nevertheless, the paired fluorescence and absorbance measurements can still distinguish CDOM from different sources. Figure 4 shows that DOC against a340 for all sample sites and demonstrates a strong correlation (r=0. 9, n=30); a340 was found to be the best proxy for DOC from all the optical measurements taken, where a340 is absorption coefficient at 340 nm (provide a check for inner-filtering effects when highly absorbent DOM quenches fluorescence, resulting in a decrease in intensity): Fig. 4 Relationship of DOC and a340 measured in River Tyne, northern England The last approach is through satellite remote sensing, a method that could estimate the amount o f CDOM in surface waters over large geographic areas would be highly desirable. Satellite remote sensing has the potential to CDOM observation with high spatial and temporal resolution and enables scaling up to the level of large ecosystems and biomes which implies that match-ups have really high correlation (hence approach is [3] . Figure 5 below shows satellite measurements of CDOM successful and verified): Satellite-derived CDOM products will allow us to estimate processed such as ecosystem production of DOM and sunlight decomposition of CDOM [7] . The new odel will also allow us to validate the remote sensing estimates of phytoplankton (chlorophyll concentration) and productivity, and may open up new possibilities for using ocean color remote sensing with studies in areas such as photochemistry, the photobiology of ultraviolet radiation and even ocean circulation [3]. Conclusion The importance of CDOM in tracing and characterizing DOM has been showed through the use of its optical properties; thus enabling us to explain the dynamics of its pool. The use of fluorescence spectroscopy makes it possible to distinguish the properties of CDOM which can enlighten us on how it influences the biogeochemical processes in the aquatic environments (for example the absorbance measurements can tell us what components of CDOM are present, its molecular weight, it sources, etc), and how it behaves in different environments. References: [1] Andy Bakera, Robert G. M. Spencer. Characterization of dissolved organic matter from source to ea using fluorescence and absorbance spectroscopy [2] C. A. Stedmon*, S. Markager . Behaviour of the optical properties of coloured dissolved organic matter under conservative mixing [3] S. P. Tiwari, P. Shanmugam. An optical model for the remote sensing of coloured dissolved organic matter in coastal/ocean waters [4] Colin A. Stedmona, Stiig Markagera, Rasmus Bro. Tracing dissolved organic matter in aquatic environments using a new approach to fluorescence spectroscopy [5] Claude Belzile, Laodong Guo. Optical properties of low molecular weight and colloidal organic matter: Application of the ultrafiltration permeation model to DOM absorption and fluorescence [6] C. Romera-Castillo, M. Nieto-Cid, C. G. Castro , C. Marrase, J. Largier, E. D. Barton, X. A. Alvarez-Salgado. Fluorescence: Absorption coefficient ratio — Tracing photochemical and microbial degradation processes affecting coloured dissolved organic matter in a coastal system [7] http://neptune. gsfc. nasa. gov/science/slides. php? sciid=73 How to cite Application of Fluorescence Spectroscopy, Essay examples

Beloved 2 Essay Example For Students

Beloved 2 Essay BelovedIn regards to the novel Beloved Toni Morrison says, â€Å"The novel can’t be driven by slavery. It has to be the interior life of some people, a small group of people, and everything that they do is impacted on by the horror of slavery, but they are also people.† Critics argue that the novel is driven by slavery and that the interior life of the protagonists is secondary. This is true because most of the major events in the story relate to some type of slavery. The slavery that drives the novel does not have to be strictly physicalslavery. Morrison’s characters are slaves physically and mentally. Although they are former slaves, they are forever trapped by horrible memories. We will write a custom essay on Beloved 2 specifically for you for only $16.38 $13.9/page Order now The type of slavery the novel initially depicts does not correspond to what really happened to slaves in the 1800s. At Sweet Home, Mr. and Mrs. Garner treated their slaves like real people. Mr. Garner is proud of his slaves and treats them like men, not animals. . . . they were Sweet Home men the ones Mr. Garner bragged about while other farmers shook their heads in warning at the phrase. He said, â€Å". . . my niggers is men every one of em. Bought em thataway, raised em thataway. Men every one.†1 The things that occurred at Sweet Home while Mr. Garner is alive are rather conservative compared to what slaves actually suffered during this time period. Under the management of schoolteacher, things change dramatically. He turns Sweet Home into a real slave plantation. He treats and refers to the slaves as animals. He is responsible for the horrible memories embedded in Sethe and Paul D. Sethe feels the impact of slavery to its fullest extent. Slavery pushes her to kill her baby daughter. She feels that is the only way to protect her beloved daughter from the pain and suffering she would endure if she became a slave. The minute she sees schoolteachers hat, Sethe’s first instinct is to protect her children. Knowing that slave catchers will do anything to bring back fugitive slaves and that dead slaves are not worth anything, Sethe took matters into her own hands. On page 164 Sethe says, â€Å"I stopped him. I took and put my babies where they’d be safe.† Paul D asks, â€Å"How? Your boys gone you don’t know where. One girl dead, the other won’t leave the yard. How did it work?† â€Å"They ain’t at Sweet Home. Schoolteacher ain’t got em,† replies Sethe. This one incident does not only affect Sethe, but it changes things for Beloved and Denver as well. Beloved loses her life to slavery. Her own mother sacrifices her existence in order to keep her out of slavery. As for Denver, she is indirectly affected by the horrors of slavery. She has to put up with living in a haunted house because her mother refuses to run away again. On page 15 Sethe says, â€Å"I got a tree on my back and a haint in my house, and nothing in between but the daughter I am holding in my arms. No more running from nothing. I will never run from another thing on this earth.†Sethe becomes a slave again when she realizes who Beloved really is. She feels indebted to Beloved for taking her life. In an effort to gain forgiveness, Sethe decides to focus all her energy on pleasing Beloved. When once or twice Sethe tried to assert herself be the unquestioned mother whose word was law and who knew what was best Beloved slammed things, wiped the table clean of plat es, threw salt on the floor, broke a windowpane. Nobody said, You raise your hand to me and I will knock you into the middle of next week. No, no. They mended the plates, swept the salt, and little by little it dawned on Denver that if Sethe didn’t wake up one morning and pick up a knife, Beloved might.2Then there’s Paul D, who replaces his â€Å"red heart† with a tin tobacco box. He refuses to love anything strongly and establish long term relationships because he is still hurting from losing his brothers and friends to schoolteacher. Schoolteacher also takes his pride and manhood away by forcing him to wear a bit. Paul D compares himself to a chicken. .u054c0d62084b4e0ed49015ace43bc513 , .u054c0d62084b4e0ed49015ace43bc513 .postImageUrl , .u054c0d62084b4e0ed49015ace43bc513 .centered-text-area { min-height: 80px; position: relative; } .u054c0d62084b4e0ed49015ace43bc513 , .u054c0d62084b4e0ed49015ace43bc513:hover , .u054c0d62084b4e0ed49015ace43bc513:visited , .u054c0d62084b4e0ed49015ace43bc513:active { border:0!important; } .u054c0d62084b4e0ed49015ace43bc513 .clearfix:after { content: ""; display: table; clear: both; } .u054c0d62084b4e0ed49015ace43bc513 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u054c0d62084b4e0ed49015ace43bc513:active , .u054c0d62084b4e0ed49015ace43bc513:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u054c0d62084b4e0ed49015ace43bc513 .centered-text-area { width: 100%; position: relative ; } .u054c0d62084b4e0ed49015ace43bc513 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u054c0d62084b4e0ed49015ace43bc513 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u054c0d62084b4e0ed49015ace43bc513 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u054c0d62084b4e0ed49015ace43bc513:hover .ctaButton { background-color: #34495E!important; } .u054c0d62084b4e0ed49015ace43bc513 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u054c0d62084b4e0ed49015ace43bc513 .u054c0d62084b4e0ed49015ace43bc513-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u054c0d62084b4e0ed49015ace43bc513:after { content: ""; display: block; clear: both; } READ: The Phenomenon Of Bipolar Affective Disorder Has Been A Mystery Since EssayOn page 72 he says, â€Å"But wasn’t no way I’d ever be Paul D again, living or dead. Schoolteacherchanged me. I was something else and that something else was less than a chicken sitting in the sun on a tub.†As a member of the chain gang he suffers another type of slavery because he is both a prisoner and a sexual servant. Even after he escapes and is a free man, Paul D is still a slave. He is a slave to his memory. Having been through so many horrible events, he has trouble finding happiness again. In her novel, Morrison uses the phrase, â€Å"Freeing yourself was one thing; claiming ownership of that freed self was another.†This applies to each and every one of her characters. Sethe will always be haunted by the memory of killing her own flesh and blood. It will be a long time until Paul D is ready to turn his tin box back into a red heart. While Denver finally ventures out of 124, she is not going to forget being shunned by the community and being held captive by her own house. As for Beloved, she is her own slave. Her constant dependency on Sethe makes her weak. Beloved needs to free herself from Sethe. Though it is hard, she needs to accept what has happened and move on. Beloved is about a group of people and how they deal with life’s hardships. Many issues in the story deal with control. There is a constant struggle for power throughout the novel. Each character fights to free him/herself from something or someone. The major theme in the story is freedom and how to acquire it. The critics are correct in saying that the novel is primari ly about slavery, but they should mention that slavery means more than just being an indentured servant.