Argument essay Example | Topics and Well Written Essays - 1000 words - 3

Argument - Essay Example Drone warfare is mainly used by the military and intelligence agencies of the United States in areas where there is a high susceptibility of terrorist activities like Afghanistan and Pakistan. This form of war has been a center of argument and debates owing to the loss of innocent lives as well as the credibility of its usefulness. Drone technology has raised further alarms because this development has been achieved by forty countries across the globe and the armed forces of the United States alone are in possession of seven thousand drones (Billitteri 653). The drone warfare is an ineffective method of war and should be discontinued as it leads to the killing of harmless citizens and it also serves to hamper the security of the United States as it raises the number of foes for the country and hence puts the lives of the Americans at risk. The drones which are also known as â€Å"unmanned aerial vehicles† gained popularity after a few successful drone strikes which resulted in the included the killing of Sheikh Sa’id al-Masr. ... Last year, the Air Force trained more pilots to fly unmanned planes than traditional fighter pilots. (656)† This explains the fact that modern warfare has entirely changed and drone warfare has gained tremendous popularity amongst the armed forces in the United States. The CIA legally justified its usage of drones under the international law by claiming that it is a part of self-defense for the United States. Proponents further claim that drone attacks are the only measures which can be used to curb terrorist organizations and put an end to them (Billitteri 656). The justifications provided for the usage of drone warfare have been debated against and correct reasons have been provided to explain the fact that this form of warfare does not yield any good. The drone strikes have greatly increased in countries like Pakistan. Warlund explains the negativities in these drone attacks by claiming that, â€Å"At least 50 drone attacks have targeted Pakistan thus far in 2010, nearly th e same amount as in all of 2009. Since 2004, from 1,040 to as many as 1,579 people have been killed in the attacks; an estimated one-third of the casualties were civilians (656).† The writer has tried to shed light upon the alarming rise in the usage of drone attacks and he has emphasized the fact that one third of the people who die due to these attacks are innocent and harmless people. International law and other grounds can by means be used to support the killing guiltless civilians in the name of self-defense (Billitteri 656). Experts have provided other drawbacks in the drone technology as well. It is claimed that though drone attacks result in the killing of

The Power of Selfishness Essay Example for Free

The Power of Selfishness Essay Literature overflows with references and symbols that correlate to teachings of many different subjects. Many authors design characters who, for some unknown reason, feel they cannot control their own selfish motives. The system of egoism defines itself as the ethical system that places needs of oneself above and before those of others. Incorporated into this system, the more explicit views of the psychological egoist arise. The psychological egoist firmly believes that he holds no power over his selfish motives; humans innately strive to maintain what proves best for themselves over any others needs. This situation becomes evident in Shakespeares Macbeth as Macbeth allows his vaulting ambition to overpower his best judgment. While Macbeths questions his actions towards the beginning of the play, his true character surfaces as we see the transformation from a discerning war hero to a monstrous, uncontrollable murderer. Because Shakespeare chooses to slowly reveal Macbeths faults, the reader initially falls into the perception of Macbeths nobility and control over his own desires. The reader first meets Macbeth as he rides in from a successful battle in which he decimated Scotlands foe led by Macdonwald. Like the reader, Macbeths peers also trust his courage in valor for brave Macbeth- well he deserves that name-/ Disdaining fortune, with his brandished steel, / Which smoked with bloody execution, / Like valors minion carved out his passage/ Till he faced the slave(I.ii.16-20). Even the king resounds Macbeth as a valiant cousin, worthy gentleman, a gesture that portrays trickles of irony, as this valiant cousin would soon become his gruesome murderer. These bold and proud portrayals of Macbeth are implemented to confuse the reader, to skew his belief in Macbeths ability to kill a friend, to hide Macbeths uncontrollable secret desire to assume the throne of Scotland. Shakespeare quickly reveals Macbeths ambition for the throne as he portrays an inquisitive Macbeth, careful not to promulgate his excitement for the three witches prophesy. Macbeth snaps to the hags, Stay, you imperfect speakers, tell me more! / Speak I charge you (I.iii.70-78). The quick reaction to the witches prophesy of his kingship flags the reader to notice Macbeths instantaneous and uncontrollable interest in the prospect of overthrowing Duncan. The uncontrollable urge for self-advancement over others well being closely follows the Catholic Social Teaching of the psychological egoists inextinguishable desire to trump the success of others and attain fame and glory. Thinking through the requirements and consequences of his kingship, Macbeth slowly settles away from the idea of murdering the honorable Duncan, a withdrawal which sets the reader astray from the prospect of Macbeths desire to advance at any cost. As he arrives back to his castle, Lady Macbeth meets him with a rampant frenzy, questions him about what it will take to propel her to the position of queen, and implores him to consider the simple murder of Duncan to grasp her such happiness as well as seal their marriages happiness. Like Macbeth, Lady Macbeth keeps captive the same uncontrollable desire that defines a psychological egoist; however, she chooses to play into Macbeths fears and emotions to achieve her goal rather than following through herself. Lady Macbeth and Macbeth clearly know what they want and submit to any means necessary in order to achieve their goal. They plan to greet Duncan as he arrives at Macbeths castle [looking] like the time, [bearing] welcome in [their] eyes, / [their] hands, [their] tongue. Look like the innocent flower, / but be the serpent under it(I.v.64-66). The now assured murder of Duncan slowly assimilates into a passionate war to achieve their desires at cost to any others, even Lady Macbeths desires trump those of her husband in her mind. The selfish mood throughout the play seems to give warning to not only selfish ideas and selfish motives, but to societys ability as a whole to quell these undying desires, to allow these dangerous ideas to subside, and to realize the need for intervention long before ones ambition grows to large to control. Egoism has been widely criticized as subverting attempts to live together as a whole, a criticism which further magnifies the potency of danger that Macbeths ambitions hold. Macbeths ability to act upon his ambition remained unclear for a large part of the play; however, once he committed the initial murder of Duncan, Macbeths will to remove anything that threatened his success became clear; his willingness to kill further emboldened the correlation of him as an egoist. Quickly becoming suspicious of the beliefs of those around him, Macbeth moves to kill Banquo, his closest friend and ally until this point. As Banquo clearly dictates his unwillingness to support Macbeth in his nefarious deeds, Macbeth decides to call upon a group of murders to remove the threat of not only Banquo, but of his son Fleance, who was prophesized to be king. In fact, Macbeth believes every minute of [Banquos] being thrusts/ Against [his] nearest of life (III.i.118-119). The small statement illuminates the potency of Macbeths insanity; his closest friends have now become his strongest enemies. Because of this transformation from friend to foe, Banquo becomes a victim of Macbeths ambition, becomes a symbol of pain caused by the incessant lust for power, becomes a rock from which those like Malcolm and MacDuff launch themselves from in order to overthrow the lost, poisoned mind of Macbeth. Macbeth, his mind racked from the ominous apparitions of his demise, soon learns of MacDuffs flight to England, an action which he uses to justify the murder of many more innocent citizens who, in Macbeths eyes, threaten his very existence and success as king. Pacing in his castle, attempting to discern his best plan for retaliation against MacDuff, Macbeth reveals his desire to seize upon Fife, give to the edge of the sword/ [MacDuffs] wife, his babes, and all the unfortunate souls/ that trace him in his line (IV.ii.151-152). Resorting to rampant murders of noble kin, Macbeth cries out his unnecessary and undeserved desire to eliminate all of those who renounce his right to the throne. Macbeth abnegates all guilt in these times of passion and anger that frequently overpower his no longer existent common sense and discernment. Like the egoist, Macbeth chooses to not only act out of selfish measures, but proclaims that his actions are not of his control, but rather, a direct cause of his own inevitable drive towards success and power. Even as Malcolm misleads MacDuff about his own vices and shortfalls as a leader, MacDuff feels that the vulture in [Malcolm] to devour so many/as the will to greatness dedicate themselves (IV.iii.75-76) cannot exist as it does in Macbeth. MacDuffs belief that Macbeth defines the ultimate evil as a leader as well as his inclusion of Macbeths inexorable will to greatness further corroborates the correlation between a stereotypical psychological egoist and Macbeth. MacDuff describes Macbeths inextinguishable will as the catalyst for Scotlands demise as well as an innate feature that Macbeth contains; Macbeth could never abdicate the throne without force due to his great desire to achieve success for only himself. Eventually, Macbeth realizes his crimes and missteps as king, but still refuses to step away from the unnecessary dismantlement of families who pose a threat to his power. Upon killing young Siward, Macbeth rejoices that no man of woman born can touch him; Siward, who fathered young Siward, similarly rejoices his sons death fighting the ultimate tyrant of their age. As the tyrant Macbeth nears his end, MacDuff enters the castle as the one of all men else who Macbeth has avoided. Knowing his death to arrive by MacDuffs sword, Macbeth fights on with a soul too much charged/ with blood of [MacDuff] already. (V.viii.4-5) His bold disregard for his own life reveals the misconception and ignorance he holds of his own life; Macbeth once again allows himself to be consumed with passion, passion which drives him to his inevitable demise. Society today regards Macbeth as a product of fear and paranoia coupled with a desire for power that is so strong that any means to achieve that power would be taken in order to attain that goal. We see many like Macbeth even today. Like Macbeth, Richard Nixon was a wildly popular figure in United States politics, winning his elections with over 60% of the popular vote. Seeing his own success and desiring so much more, he allowed his paranoia to take hold of him and cheated his way to a second term by bugging the Democratic offices. Many historians believe that this move proved to be completely unnecessary; his popularity already had been sealed with the people. Having followed through with his quest for power, his obsession caused him to inevitably resign from office. Macbeth portrayed many similar characteristics as Richard Nixon. His popularity greatly stood above his peers around him, however; he chooses to instead tear apart a kingdom for his success, a success that likely would have brought him to power anyways. Shakespeare along with history teaches us the power ambition holds over us, the importance of containing that ambition, only searching for what we can do to improve ourselves without harming others. The egoist commonly addresses the criticisms regarding his lust for power as shallow and full of fear, much like Macbeth addresses those who attempt to quell his vaulting ambition. The quest for power controls so many in the world today, but it eventually leads these people to failure much like Macbeths, failure much like Nixons, failure to keep hold of power, failure to sustain a valuable life.

Communication Skills in Social Work | Essay

Communication Skills in Social Work | Essay In the context of Social Work practice learning  (Childrens Services Assessment Team)  and the social work role discuss a particular piece of  practice, giving consideration to the skills and models of communication and empowerment that were used. Introduction Organized under the United Kingdom’s Department of Health, Children’s Services represents a division of Social Care which is administered in each region under the auspices of the Children’s Commissioner (Children Act 2004). Children’s Services is committed to the safeguarding and rights of children through high quality services over a broad array of provisions. The Children’s Assessment Team under the Department of Health has the responsibility for the handling of children and their families who have benne either referred and or have contacted their respective Child Care agency (London Borough of Barking Dagenham, 2006). The preceding includes the offering of advice and help while ensuring that the correct decisions are rendered with regard to the urgency dictated by the circumstances along with the proper response level. The preceding represents an ‘assessment’ as carried out in each individual circumstance, which requires skills, communication and the powers to carried the aforementioned out. This examination shall look into a particular area of practice concerning Social Work in the Children’s Services Assessment Team, giving consideration to the skills, models of communication and empowerment involved. The Referral and Assessment aspect of Children’s Services represents one of the most important areas of the many services offered by this Department in that it is responsible for acting upon referrals concerning children and their families that are in need of assessment (Southwark Council, 2006). The Referral and Assessment Team provides intervention as well as support and is responsible for the initial intake process covering the assessment of need and urgency, prioritizing said cases on an individual basis (Barnett London Borough, 2006). One of the most important areas, which includes child protection, legal proceedings and that children in need are looked after, is the initial process which identifies a child in need as opposed to child protection (Wrexham County Borough, 2001). The manner in which the referral was initiated has a bearing upon the type of skill, communication and application of techniques involved. In this instance, this examination shall utilize the exampl e of an abused child that has been brought to the attention of Child Services through calls made by a concerned citizen, or other means. The data and information gathered in the initial contact, regarding the allegation, requires immediate follow up to assess the truthfulness of the allegation and thus whether further action is warranted (Barnett London Borough, 2006). Said referral can come from a number of sources, such as neighbors, teachers, school nurse, and other sources (Barnett London Borough, 2006). Once the process has been initiated the most important aspect entails the skills, and communication techniques employed. The core mission of all social work is the promotion of social justice through its practice (Healy, 1998, pp. 897-914). Within this framework, social workers are in a system that promotes collaborative approaches representing analysis and prioritization (Healy and Mulholland, 1998, pp. 3-27). Once the decision has been made to see the child in question, as a result of either the suspicion or proof regarding action being warranted, the skills in communication as well as observation come into play. Thompson (2003, pp. 10) advises that the importance of communication is that it permits us to transmit information from one person to another and it represents â€Å"†¦ a complex, multilevel event†. In communicating with children as well as adults, social workers need to be well versed in interaction that accompanies communication and contact, and the complexities entailed, as well as the messages on a verbal and non verbal plane (Thompson, 2003. pp. 10-12, 33 – 34, 182-18 3). In those instances where there is an absence of external physical evidence or medical examination, the social worker has to be able to ascertain from conversations and observations with the child as well as the adults involved regarding tone of voice, eye movements, reactions, and other behavior whether truthful replies are being given. The preceding represents areas that encompass theory as well as practice. Adams et al (1998, pp. 253-272) state that the context of social work has changed over the past twenty years as a result of new public management systems that have decreased the value of theory along with the value driven aspects involved in human social work. In the context of children’s services the Referral and Assessment Team intercede on behalf of the child through policy decisions and active support when the initial interview uncovers need, depending upon the circumstances. This aspect represents item number six under Article Two, General Function, of the Children Act 2004 (Children Act 2004). The Department of Health (2006) provides for advocacy safeguards for children to protect them from abuse as well as poor practice. This aspect provides for children themselves to be a part of the process, having and active voice that can be and is heard to participate in reaching determinations (Department of Health, 2006). Under provisions as set forth, the standards and core principles that children can expect are identified as (Department of Health, 2006): The role of children in advocacy, policy context, equal opportunities, confidentiality, publicity, accessibility, independence, complaints, procedures, and the management and governance of services The preceding along with empowerment provides the child with a real voice as well as organization that is committed to ensure their well being as found under the Children’s Services Regulations 2005 of the Children Act 2004 (Children’s Services Inspection Regulations, 2005). Through a formalized inspection, review and analysis process involving â€Å"†¦ two or more inspectorates and commissions, the process is ensured of impartiality as well as adequate oversight. Articles 2.3 under this provision sets forth â€Å"†¦ that relevant assessments, inspections, reviews, investigations and studies †¦ are conducted on cases. These measures are a part of the framework of checks and balances incorporated into the process for the safeguarding of the child who comes to the attention of Children’s Services. Empowerment also provides for the offering of assistance, counseling and advice to parents in need of help in order to safeguard a child’s well be ing. The formalized process sets forth specific guidelines in all of the indicated areas, as well as a broader scope for a matter of such national importance. Conclusion Owing to the sensitive nature of services involving children, specific case studies or references to such are not available, for the obvious reasons. Under the context of the Referral and Assessment Team of social work, a hypothetical example was used as the broad framework for the examination of practice learning and the social work role with consideration given to the skills and models of communication and empowerment. The Children Act 2004 and the Children’s Services Inspection Regulations, 2005 set forth specific procedures, guidelines and framework for the handling of child cases providing oversight safeguards through redundancy features. Each regional Council works in partnership with the departments of Education and Health, as well as other social work teams to â€Å"†¦ ensure the co-ordination of assessment of needs †¦Ã¢â‚¬  leading to the â€Å"†¦ formulation of individual care plans and support packages† (Beacon Council, 2006). The process of referral and assessment is conducted under procedures that are of course subject to the individual expertise levels of the interviewers and case workers. However the safeguards of a multi-level internal review and follow up process catches any potential instances whereby a child might slip through the system due to any number of reasons. As is the case with any process involving humans and organizations, there are those occasions when the system or the person fails, however, given the multi level review and follow up process, such mistakes do not last too long. Bibliography Adams, R., Dominelli, L., Payne, M. (1998) Social Work: Themes, Issues and Critical Debates. Houndsmills Macmillan Barnett London Borough (2006) Supporting Families Division. Retrieved on 10 December 2006 from http://www.barnet.gov.uk/index/health-social-care/children-and-family-care/supporting-families-division.htm Beacon Council (2006) Children and Families. Retrieved on 12 December 2006 from http://www.bexley.gov.uk/service/social/childrenandfamilies/disabilities.html Children Act (2004) Children Act 2004. Retrieved on 10 December 2006 from http://www.opsi.gov.uk/acts/acts2004/40031b.htm#1 Children’s Services Inspection Regulations (2005) Children’s Services Inspection Regulations. Retrieved on 12 December 2006 from http://66.218.69.11/search/cache?p=uk+children%27s+services+assessment+teamfr=yfp-t-501toggle=1ei=UTF-8u=www.dfes.gov.uk/consultations/downloadableDocs/Childrens%20Services%20Inspection%20Regulations%20Consultation%20Document%20-%20PDF.pdfw=uk+childrens+services+assessment+teamd=IY3kv5IFNg0Eicp=1.intl=us Department of Health (2006) Department of Health: Children’s Advocacy. Retrieved on 11 December 2006 from http://www.dh.gov.uk/Consultations/ResponsesToConsultations/ResponsesToConsultationsDocumentSummary/fs/en?CONTENT_ID=4017049chk=vFWybl Healy, K. (1998) Participation and Child Protection: The Importance of Context. Vol. 28. British Journal of Social Work Healy, K., Mulholland, J. 81998) Discourse analysis and activist social work: Investigating practice processes. Vol. 25, Number 3. Journal of Sociology and Social Welfare London Borough of Barking Dagenham (2006) Children’s Services Children’s Assessment Team. Retrieved on 10 December 2006 from London Borough of Barking Dagenham Southwark Council (2006) Children’s Services. Retrieved on 10 December 2006 from http://www.southwark.gov.uk/Uploads/FILE_10982.pdf Thompson, N. (2003) Communication and Language: A Handbook of Theory and Practice. Palgrave Macmillan Wrexham County Borough (2001) Assessment Framework for Children in Need and their families. September 2001. Wrexham Social Services Department, Directorate of Personal Services, Wrexham, United Kingdom Aquatic Plants: Rate Of Photosynthesis Aquatic Plants: Rate Of Photosynthesis Acid rain is a known effect of global warming, which has damaged many aquatic environments and aquatic plants throughout the world. This study investigates the effects of acid rain on an aquatic plants rate of photosynthesis. The research question is How does the change in pH of an elodeas habitat due to acid rain affect the plants rate of photosynthesis? Samples of elodea were placed into two acidic solutions, 0.01 Molar solution of nitric acid and 0.001 Molar solution of nitric acid, in a photosynthometer. The control group is water in the photosynthometer with a pH of 7. Each trial took 24 hours and the experiment was done in a high school chemistry lab near a window ledge, away from direct sunlight. After each 24 hour period, the amount of oxygen released by the plants is measured to determine the rate of photosynthesis. As the environment becomes more acidic, the elodea samples volume of oxygen release decreases. The average volume of oxygen release for the elodea samples in the control water group is 0.57 mL, 0.29 mL for the pH 4.0 group, and 0.15 for the pH 3.5 group. The results from this study suggest that there are big differences among the three groups and that acid rain negatively affects the rate of photosynthesis. 1.0 Introduction 1.1 Rationale of Study Nowadays, global warming has become a big issue on the forefront of environmental problems. Its not simply the devastation of rising temperatures all over the world but other effects as well which can be much more dangerous and harmful to the human race. One of these effects is the increase in the acidity of precipitation, or acid rain. At present, acid rain affects large parts of the United States and is especially noticeable near large cities. The annual acidity value averages at pH 4 but values as low as pH 2.1 have been observed. It is confirmed that the increased use of natural gas and development of factories have been associated with the increasing acidity of precipitation and thus, efforts had been made to rely on more clean, renewable energy sources and the development of air quality emission standards. However, not all the economic and ecological effects due to the introduction of strong acids into the natural systems are known and therefore, this study looks into one of it s many harmful effects, the acidification of freshwater ecosystems. Studies suggest that no matter how small the change in pH of any aquatic ecosystem is, large amounts of magnesium and calcium would still be lost in the vicinity affected by acid rain. As a result of the loss of these vital elements, the response and recovery of any aquatic ecosystem toward the decrease in acid deposition would be delayed significantly. Because of this, any further reduction in pH of the ecosystem will bring about exponential increases in damage to any living organism within the affected area. Just like how damage to the human immune system would lead to significant, exponentially increasing damage to the human body in the form of diseases, the damage done to the recovery mechanisms of an aquatic ecosystem due to acid rain opens up possibilities for catastrophes that could be of a far worse magnitude. One such possible disaster is the harming of aquatic plants rates of photosynthesis. Alongside the endangerment of the population of crustaceans, insects, and fish within the aquatic ecosystem, the damage done to the aquatic plants rates of photosynthesis such as Elodea Canadensiss, can be one of the worst possible effects of acid rain and global warming. This study is worthwhile in that plants are the basis of the food chain and any damage inflicted upon the process of photosynthesis in general would surely mean that our very own existence is in jeopardy. 1.2 Aim The aim of this paper is to study the effects of the change in pH of Elodea Canadensiss environment on the plants rate of photosynthesis. In a broader context, this study investigates the effects of acid rain on aquatic plants. Hence, the research question is: How does the change in pH of an elodeas freshwater habitat due to acid rain affect the plants rate of photosynthesis? The rate of photosynthesis is measured with a photosynthometer in which oxygen released from the elodea samples are collected under differing pH environments. The elodea samples are placed in differing solutions of nitric acid, which are used to simulate elodea living in freshwater habitats affected by acid rain. Because oxygen is a product of photosynthesis and is correlated to the rate of photosynthesis, oxygen is then collected from the various experimental groups. Most experiments that require the measurement of the rate of photosynthesis of a macrophyte determine the changes in oxygen concentration of the system in which the macrophyte is kept in and thus, this study is done in the most popular manner. The volume of oxygen collected from each group would then be analyzed to determine the optimal conditions for an aquatic plant to live in and the effects of acid rain on the rate of photosynthesis. 1.3 Acid Rain Because the value for unpolluted precipitation is officially set at pH 5.65, the same value as distilled water, acid rain is a term that describes rain with a pH of less than 5.6. Man-made emissions of sulfur and nitrogen pollutants had always been blamed as a major cause of acid rain but a genuine cause-effect relationship has never been determined. However, it is certain that sulfur and nitrogen compounds react with the atmosphere to produce acids that would lower the pH of precipitation. There are also many natural sources of these sulfur and nitrogen compounds. For example, approximately 50 percent of atmospheric nitrogen compounds are produced by lightning discharges, which may bring about acid rain. The real importance of studying acid rain though is to study its effects on the natural ecosystems. One such ecosystem that is affected greatly by acid rain is the aquatic ecosystem. The chemical composition of lakes is heavily influenced by precipitation and many studies have suggested that acid rain has caused lake acidification. Most importantly, the changes in pH of these ecosystems due to acid rain appeared to have damaged aquatic plants metabolism, causing a decline in primary productivity. Because these aquatic plant communities are primary producers, any damage done to their metabolism mechanisms (photosynthesis) can drastically reduce the food supply and energy flow within the affected ecosystem. Thus, acid rain has the potential to reduce the supply of minerals and nutrients and endanger the existence of all organisms within an ecosystem, especially aquatic ecosystems. 1.4 Marine Photosynthesis The metabolism of plants is commonly referred to as photosynthesis. Photosynthesis involves two kinds of processes, photochemical and enzymatical, meaning that the rate of photosynthesis is a function of irradiance and enzyme activity. No enzymes are involved in the photochemical process in which the plant absorbs light in the range of 350 and 700 nm in wavelength. In this process, chlorophyll molecules absorb light and excites electrons, which go through the electron transport and end up producing ATP and NADPH. As its name implies, the photochemical process involves light and is purely chemistry. The other process is the light-independent enzymatical process of the Calvin cycle. This process occurs after the light-dependent reaction for it requires the ATP and NADPH to reduce CO2 to carbohydrate. At the start of this process, six carbon dioxide molecules attach to six 5-carbon ribulose biphosphate (RuBP) molecules to create six molecules of a 6-carbon compound. Each of these 6-carbon compounds splits into two 3-carbon molecules called phosphoglycerate (PGA). This results in 12 PGA molecules. Energy from ATP and electrons from NADPH are then needed to reduce each of these PGA molecules into twelve G3P (glyceraldehyde 3-phosphate) molecules. Finally, two of these G3P molecules are used to form one glucose molecule and the remaining ten G3P are reassembled into RuBP molecules. Marine Photosynthesis also requires CO2 to start and this CO2 is acquired when CO2 is dissolved in water. This process is represented by the following formulas: CO2 + H2O ßà   H2CO3 CO2 + OH- ßà   HCO3- The dissolved CO2 in the water can either make the water increase or decrease in pH depending on the pH, temperature, and salinity of the environment. The concentrations of carbonic acid (H2CO3) and bicarbonate (HCO3-) in the aquatic environment form a complex equilibrium, which is needed to sustain optimal living conditions for its inhabitants; the two compounds play a vital biochemical role in the pH buffering system, which strongly affects photosynthetic organisms. 1.5 Elodea Canadensis Elodea Canadensis is an aquatic vascular plant that spends its entire life cycle under the surface of a body of water. It is a perennial with a flexible branches stem and fibrous roots. Its leaves do not have petioles and they are always in groups of three to seven spread out evenly along the entire length of the stem. The species of Elodea Canadensis is commonly known as waterweed and is abundant in North and South America. However, there are 17 species of the genus Elodea and these plants are common throughout the world with use as an aquarium plant. Its use in science experiments is fairly common as well due to its strongly photosynthetic, dense chloroplast structure. When exposed to a strong light source, the oxygen bubbles given off by the plant is clearly visible. Another reason for its use in science experiments is that it is able to live enough after being cut into smaller strands to be experimented on. 2.0 Variables 2.1 Independent Variable The elodea plants are placed in 2 different nitric acid solutions of varying pH and molarity. Strands of elodea with 10 leaves each are subjected to either a 0.001 molar solution of nitric acid with a pH of 4.0 or a .01 molar solution of nitric acid with a pH of 3.5. The solution and elodea are placed into the barrel of the syringe in the photosynthometer. Litmus paper is used to measure the pH of the acid solutions. 2.2 Dependent Variable The rate of photosynthesis of the elodea samples are affected by the varying pH of the solutions they are subjected to. The rate of photosynthesis is indicated by the volume of oxygen given off by each 10 leaf elodea strand and collected in the photosynthometer over a 24 hour experiment period. 2.3 Control Variable The control variable is tap water with a pH of 7.0, a neutral solution, in the photosynthometer. It is used to determine whether or not the acidic solutions the elodea strands are tested in actually have an effect on the plants rates of photosynthesis as compared to a neutral aquatic environment. 2.4 Constants All trials are done in the same chemistry laboratory next to a window ledge, away from direct sunlight. The room and the solutions inside the syringe of the photosynthometer are kept at a constant 26.4 ° Celsius. Each elodea sample is a 10 leaf strand. The same volume of solution is used for every trial in the photosynthometer. 3.0 Procedures 3.1 Preparation before experimentation 3.1.1 Test Trials Before any definite procedure of experimentation is made, test trials needed to be done first in order to see which acid solutions would not kill elodea in a 24 hour period. Strands of elodea are placed in test tubes with 0.001 molar, 0.01 molar, and 0.1 molar nitric acid solutions and are labeled. By the end of the 24 hour period, the elodea in the test tubes with the 0.1 molar nitric acid solution died since the leaves lost all of their green color and oxygen bubbles were not released from the leaves even before the 24 hour period. This meant that the plant could not perform photosynthesis anymore and was dead. The other two elodea samples were alive and thus, the 0.001 molar and 0.01 molar nitric acid solutions were used for experimentation to mimic the effect of acid rain on an aquatic plants rate of photosynthesis. 3.1.2 Nitric Acid Solutions Preparation The 0.01 Molar solution of nitric acid is made by mixing 1 mL of a 1.0 Molar solution of nitric acid with 99 mL of tap water in a graduated cylinder. The tap water is measured with the graduated cylinder and a pipette is used to hold 1 mL of the 1.0 Molar solution of nitric acid. 1 Liter of a 0.001 Molar solution of nitric acid is prepared by mixing 1 mL of a 1.0 Molar solution of nitric acid with 999 mL of tap water in a liter plastic laboratory bottle. 1 Liter of this solution is made since it is more convenient to create a large volume of an acid solution with a low concentration than it is to create a small volume of a highly diluted acid solution. 3.1.3 Apparatus Preparation The photosynthometer is assembled by connecting a syringe to a graduated 1-cm3 pipette with a short length of rubber tubing. The length of the rubber tubing is arbitrary as long as it is tight enough to secure the syringe to the pipette, preventing any liquid from coming out of either the syringe or pipette. The apparatus is fixed in a vertical position with the test tube clamp and ring stand (Figure 1), using the test tube clamp on the syringe and connecting that to the ring stand. 3.2 Method for Experimentation with the Photosynthometer 3.2.1 Application of Elodea Sample and Solutions into the Photosynthometer Before experimentation, a sample of elodea is taken by cutting a strand of elodea with 10 leaves. The mass of the elodea is recorded and measured in order to look for patterns after experimentation. The plunger of the syringe is then removed and the elodea sample is placed into the barrel of the syringe. Since any liquid placed in the syringe with the plunger off will fall straight through and out the apparatus, the elodea sample is placed in the apparatus first before anything. 30 mL of the 0.001 Molar solution of nitric acid is then poured into the barrel of the syringe and the barrel is immediately sealed with the plunger to prevent any more liquid from leaving the apparatus. No matter what, some of the solution would still leave the apparatus with the plunger off. Therefore, 30 mL of the solution is used in the barrel so that any excess amount of the nitric acid solution could be expelled by pushing down on the plunger until 15 mL of the solution is left in the barrel of the syri nge. With the apparatus removed from the test tube clamp and the open end of the pippette pointing upwards, any trapped air inside the syringe and pipette is expelled by slowly and softyly pushing the plunger into the barrel until all of the trapped air expelled, making sure not to have any of the solution leave the pipette. 3.2.2 Maintaining Constants When the apparatus is placed back onto the test tube clamp and ring stand, the temperature of the nitric acid solution inside the barrel of the syringe is measured with an infrared thermometer and recorded. The temperature is measured to make sure that the temperature remains constant for all trials since temperature does affect the rate of photosynthesis. To maintain constant temperatures and weather conditions as well, experimentation is done in one room for all trials and begins at the same time of day. In my case, experimentation was done in the schools chemistry laboratory, which was kept at a constant 26.4 ° Celsius, at 16:00 US central time. 3.2.3 Data Collection The volume (the location of the meniscus) of the nitric acid solution in the pipette of the apparatus is measured and recorded. The time is measured and recorded as well. The elodea sample is left in the apparatus for 24 hours. After that time, the amount of oxygen the sample of elodea gave off is measured and recorded by looking at the location of the meniscus of the acid solution in the pipette. All experimental procedures are then repeated with the 0.01 Molar nitric acid solution and tap water instead of the 0.001 Molar nitric acid solution. Table 4 4.7 ANOVA test The ANOVA (Analysis of Variance) test is also used to further verify the difference of the results among the experimental groups. The result of this ANOVA test indicates whether the experimental variable (pH of the elodeas environment) causes significant difference on the elodeas rates of photosynthesis. Before the ANOVA test could be carried out, three assumptions are made: Observations are independent (the value of one observation is not correlated with the value of another observation). Observations in each group are normally distributed. Homogeneity of variances (the variance of each group is equal to the variance of any other group). The null hypothesis of this test is: there is no difference between the means of the different groups (pH 7.0, 4.0, and 3.5). Then, the statistic test is carried out to find the F ratio. F Ratio = Mean square between groups Mean square within groups If the computed F ratio is greater than the F critical value at the significance level of 0.05, the null hypothesis is rejected. 5.0 Conclusion Graph 1 shows that the mean volumes of oxygen release among all the groups had significant differences. The average volume of oxygen release for the pH 4.0 group is 0.29 mL, which is about half of the mean volume of oygen release for the control group, pH 7.0, of 0.57 mL. The mean volume of oxygen release for the pH 3.5 group is 0.15 which is about half of the mean volume of oxygen release of the pH 4.0 group as well. As shown in Graph 2, this trend is shown to be of an exponential decline in mean volume of oxygen release as pH increases; as the environment becomes more acidic, the mean volume of oxygen release declines more sharply. According to Table 3, the average volume of oxygen release of the pH 4.0 group differs from the control pH 7.0 group by 49%. The average volume of oxygen release for the pH 3.5 group differs from the control pH 7.0 group by 74%. These values are large and again emphasize the significant difference of the results of the experimental groups to those of the control group. According to Table 5, ANOVA test results, there is a significant difference between the mean volumes of oxygen release between the pH 7.0 and pH 4.0 groups, as well as the pH 7.0 and pH 4.0 groups. However, there is no significant difference between the results of the pH 4.0 and pH 3.5 groups. From the ANOVA test results, the hypothesis that the elodeas rate of photosynthesis would be harmed in more acidic environments is supported. A change from an environment of pH 7.0 to pH 4.0 would greatly reduce an elodea plants rate of photosynthesis while a change from an environment of pH 4.0 to pH 3.5 would not bring about a significant reduction in an elodea plants rate of photosynthesis. The standard devation values from table 4 state on average how far the data varies from the mean. For each group, the standard devation is relatively low comparedto the averages of each trial and thus, the data collected and the methods used to collect the data is very precise. Increasing the acidity of an environment results in a number of physical, chemical, and biological changes. A chemical change that could occur is the change in the availability of carbon. With the pH of the environment at slightly acidic levels, the amount of dissolved HCO3- in the water drops. This dissolved HCO3- in the water is the plants source of carbon used for photosynthesis and it is proven that aquatic plants have the best rate of photosynthesis in slightly alkaline environments due to the availability of carbon in the dissolved HCO3-. The lower pH levels in the environment also affect the enzymes in the cells of the plant. If pH levels drop low enough, enzymes such as RuBP used in the Calvin Cycle would shut off and would no longer carry out the chemical reactions needed for photosynthesis. Not only would the acid in the environment kill the enzymes but the acid would also destroy the plant proteins, lipids, and membranes, causing plant cells to malfunction and a major redu ction in the rate of photosynthesis. Specifically, the lowered pH of the environment causes alterations in the chlorophyll molecules, which are highly essential to the process of photosynthesis. 6.0 Evaluation and Suggestions Possible random errors include the inaccuracy of the solution molarity stated, mass stated, and volume of oxygen release stated. These random errors may be caused by the inaccuracy of the measuring equipment. The equipment such as graduated cylinders and pipettes are fairly accurate though to an extent. One possible systematic error could be the different masses of each elodea sample. The mass of each strand may affect the volume of oxygen released for mass may determine the amount of chloroplast in each sample. Since each elodea sample was cut from a larger strand, this cutting may also cut each samples life. With a samples life cut short, the volume of oxygen collected from this experimentation may not truly reflect how plants act outside of these laboratory conditions. Also, the worst source of error in measuring the rate of photosynthesis with a gas collection method may be the gas storage within the leaves. If some oxygen is stored in the leaves, the oxygen collected in the photosynthometer may not fully represent the samples true rates of photosynthesis in the tested environments. Some measures that could be taken to prevent these errors could be to use more accurate equipment and using plant samples of similar mass as well as number of leaves. Total Word Count: 3,002

Ray Huang’s book 1587: A Year of No Significance :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  The title of Ray Huang’s book 1587: A Year of No Significance: The Ming Dynasty Decline suggests that this book is a work based on a single year in which little occurred. But in reality, Huang’s look at the events of 1587 demonstrate the complex workings of the leadership during the decline of the Ming dynasty, giving the reader an insight into the societal structure, the governmental process, and the mistakes that occurred systematically to enhance the progression towards the seemingly inevitable downfall. Though nothing of historical significance occurred during the year 1587, Huang is able to demonstrate the way in which the existing culture and the smaller, more systematic elements of political leadership can be understood within the context of a seemingly unimportant period of time.   Ã‚  Ã‚  Ã‚  Ã‚  Chapter 1: The Wan-Li Emperor, begins by explaining the major premise of the work: The concept of looking at a single year in the history of the leadership of China and evaluating the implications for understanding other aspects of history, including the decline of the Ming Dynasty. In this initial chapter, Huang provides an anecdotal history of some of the events that occurred, and includes within it a discussion of the set up of the leadership, the repercussions that occurred in the event of certain actions, including the prospects of an audience with the emperor. Huang reviews these issues as he considers that actions taken by the Wan-li emperor, who was only twenty-four in 1587 and who had been a veteran of ceremonial proceedings, and considers his history as an element of understanding the progression of leadership.   Ã‚  Ã‚  Ã‚  Ã‚  Huang outlines to reconstruction of the court under Wan-li came into power at the death of his father and the seemingly insignificant actions taken by the emperor, from his marriage to the redecorating of the court. Within the scope of this discourse, Huang is able to disclose the excesses of the emperor, and consider the implications of the bureaucratic system that he devised as an extension of this excess (13).

Animal Welfare Research Paper

Feeding a Pitbull It is suggested that pitbull owners feed their pets the foods that have what the breed requires in nutritional value. The dog food should contain nutrient sources that are similar to that found in their native lands that their ancestors ate. The requirements for a pitbull are a balance of protein, carbohydrates, fatty acids, vitamins and minerals. Many dogs are taken to the vet because of nutritional related problems. If the dog is not getting the proper nutrients that their diet requires they can suffer from dry/itchy/flaky skin, hot spots, yeast infections in the ears, or thyroid-liver-kidney problems.The best diet for the pitbull is one that the owner makes fresh, using quality ingredients, without preservatives. Preparing home cooked meals for a dog can be less expensive than buying the average all-breed or any-breed pet food. Native foods for this breed would have been yellow corn, soy meal, rice, venison and fish. Recommended foods for this breed would be food s that contain soy, corn, brown rice, beef and poultry. This breed needs a high fiber and low carbohydrate diet. Avoid feeding this breed foods with a high fat or high starch content.Do not feed this breed any supplemental vitamin C, such as ascorbic acid, sodium ascorbate, calcium ascorbate, or ascorbal Palmitate because these can cause kidney and liver damage to the breed. The best food for your dog is real food, not people food, but food like real chicken, turkey, beef, bison, venison, lamb, fish, some fruits and vegetables, occasionally yogurt and eggs. Vitamins and best sources Vitamin A Palmitate Vitamin B-1 Thiamine Hcl & Yeast Vitamin B-2 Riboflavin & Yeast Vitamin B-6 Pyridoxine Hcl & Yeast Vitamin B-12 Cyanocobalamin & YeastVitamin D D-activated Sterol Vitamin E dl-alpha tocopherol acetate Niacinamide Biotin Folic Acid D-Calcium Pantothenate Para Amino Benzoic Acid Minerals and best sources Calcium Bone Meal Copper Gluconate Iodine Sea Kelp Iron Ferrour Fumerate Magnesium Magnesium- Gluconate Manganese Manganese-Gluconate Phosphorus Bone Meal Potassium Potassium-Gluconate Zinc Zinc-Gluconate Habitat There is no such thing as a natural habitat for domesticated dogs such as the terrier breeds, and it would be easier to describe the places where they couldn’t and would have a hard time surviving.Extremely cold places and extremely warm places with no shade can really do some harm to this breed. The basic cage size for an American pitbull terrier would be 36 inches long, 23 inches wide, and 25 inches high. The metal cages are preferred because they can be folded down and stored away when they are not in use. The metal cages also give the dog a 360-degree visual of their surroundings. The plastic cages are more for the puppies and for transporting the dogs. Health Care Hip dysplasia is a serious problem in pitbulls.There were x-rays done of 480 pitbulls and 22% were found to have hip dysplasia. Elbow dysplasia is another serious problem in pitbulls . There were over 100 pitbulls that were x-rayed and 14% were found to have elbow dysplasia. This is the 15th worst rate in 82 breeds. Other orthopedic diseases in pitbulls are luxating patella and osteochondritis. American pitbull terriers have the 4th highest rate for hypothyroidism in 140 breeds. Vets are seeing heart disease in an increasing number of dogs in this breed. Skin problems are very common in this breed and can range from allergies to demodectic mange.Tumors and cancer are also a serious concern with this breed. Eye disease is also very common and can include progressive retinal atrophy, cataracts, and entropion. Inherited deafness can occur within pitbull puppies that have a lot of white on their heads. Depending on the gender of your dog there are many pro’s and con’s to getting these dogs spayed or neutered. Female Pro’s * Spaying prevents the nuisance of heat periods * Spaying prevents uterine infections * Spaying prevents false pregnancies * Spaying prevents real pregnancies Spaying offers partial protection against breast cancer * Spaying prevents cancer of the uterus and ovaries * Spaying may mean lower licensing fees Female Con’s * Spaying doubles the risk of obesity * Spaying increases the risk of the deadly cancer called hemangiosarcoma * Spaying triples the risk of hypothyroidism * Spaying is a major surgery and requires general anesthesia * If done at the wrong age, spaying increases the risk of hip dysplasia, ligament rupture, osteosarcoma (bone cancer), and urinary incontinence Male Pro’s Neutering may mean lower licensing fees * Neutering reduces leg-lifting * Neutering reduces dominance and aggression * Neutering reduces the risk of your dog being attacked by other male dogs * Neutering helps re-focus your dogs’ attention from other dogs to YOU * Neutering reduces sexual behaviors * Neutering calms you dog around unspayed females * Neutering reduces the risk of prostate disorders * Neuter ing prevents testicular cancer * Neutering reduces the risk of perianal fistula Neutering helps prevent your dog from breeding Male Con’s * Neutering triples the risk of obesity * Neutering increases the risk of a deadly cancer called hemangiosarcoma * Neutering triples the risk of hypothyroidism * Neutering increases the risk of geriatric cognitive impairment * If done at the wrong age, neutering increases the risk of hip dysplasia, ligament rupture, and osteosarcoma (bone cancer) Restricted Use: The American Pitbull Terrier breed is one of the most mistreated and misunderstood breed of dog there is.Because of this misinterpretation of the breed many counties, even states, have banned this breed. This is why there are so many of them euthanized or put in kennels. Many people are afraid of this breed because of stories on the news about a dog attack and they automatically assume that it was a pitbull that did it but in reality it was either a golden retriever or a german shep herd that caused the attack. Pitbulls were not bred to be attack dogs, they were bred to be work dogs and then got bred to be family dogs and they are terrific family dogs.

How to Build a Great Dental Assistant Resume (Examples Included)

How to Build a Great Dental Assistant Resume (Examples Included) Whether you’re looking to become a newbie dental assistant or you’ve just finished your 5000th gentle reminder to patients about flossing regularly, it’s important to hit all the right notes in your resume. Consider resume maintenance a kind of career flossing: it needs to be done if you want to avoid more work and aggravation later. Let’s look at how to build a dental assistant resume at different stages: one entry level, one experienced in the field, and one about to move up to the next level of becoming a dental hygienist. First up: Barry, who’s looking for his first job as a dental assistant.Download This Resume in MS WordBarry Schwartz123 Street Drive, Apt. 2Springfield, MO 44444(333) 123s)How to Write a Perfect Occupational Therapist ResumeHow to Write a Perfect Physician Assistant Resume (Examples Included)How to Write a Perfect Receptionist Resume (Examples Included)How to Create a Perfect Retail ResumeHow to Write a Perfect Sales Associate Resume (Examples Included)How to Write a Perfect Social Worker Resume (Examples Included)How to Write a Perfect Truck Driver Resume (With Examples)