Cloning Humans Essays - Cloning, Molecular Biology, Genetics

Cloning Humans Cloning humans has recently become a possibility that seems much more feasible in today's society than it was twenty years ago. It is a method that involves the production of a group of identical cells or organisms that all derive from a single individual (Grolier 220). It is not known when or how cloning humans really became a possibility, but it is known that there are two possible ways that we can clone humans. The first way involves splitting an embryo into several halves and creating many new individuals from that embryo. The second method of cloning a human involves taking cells from an already existing human being and cloning them, in turn creating other individuals that are identical to that particular person. With these two methods almost at our fingertips, we must ask ourselves two very important questions: Can we do this, and should we? There is no doubt that many problems involving the technological and ethical sides of this issue will arise and will be virtually impossible to avoid, but the overall idea of cloning humans is one that we should accept as a possible reality for the future. Cloning presents as much a moral problem as a technical problem. Cloning is an affront to religious sensibilities; it seems like "playing God," and interfering with the natural process. There are, of course, more logical objections, regarding susceptibility to disease, expense, and diversity. Others are worried about the abuses of cloning. Cloning appears to be a powerful force that can be exploited to produce horrendous results. Cloning may reduce genetic variability, Producing many clones runs the risk of creating a population that is entirely the same. This population would be susceptible to the same diseases, and one disease could devastate the entire population. One can easily picture humans being wiped out be a single virus, however, less drastic, but more probable events could occur from a lack of genetic diversity. For example, if a large percentage of an nation's cattle are identical clones, a virus, such as a particular strain of mad cow disease, could effect the entire population. The result could be catastrophic food shortages in that nation. Cloning may cause people to settle for the best existing animals, not allowing for improvement of the species. In this way, cloning could potentially interfere with natural evolution. Cloning is currently an expensive process. Cloning requires large amounts of money and biological expertise. Ian Wilmut and his associates required 277 tries before producing Dolly. A new cloning technique has recently been developed which is far more reliable. However, even this technique has 2-3% success rate. There is a risk of disease transfer between transgenic animals and the animal from which the transgenes were derived. If an animal producing drugs in its milk becomes infected by a virus, the animal may transmit the virus to a patient using the drug. Any research into human cloning would eventually need to be tested on human. The ability to clone humans may lead to the genetic tailoring of offspring. The heart of the cloning debate is concerned with the genetic manipulation of a human embryo before it begins development. It is conceivable that scientists could alter a baby's genetic code to give the individual a certain color of eyes or genetic resistance to certain diseases. This is viewed as inappropriate tampering with "Mother Nature" by many ethicists. Because clones are derived from an existing adult cell, it has older genes. Will the clone's life expectancy be shorter because of this? Despite this concern, so far, all clones have appeared to be perfectly normal creatures. A "genetic screening test" could be used to eliminate zygotes of a particular gender, without requiring a later abortion. Cloning might be used to create a "perfect human," or one with above normal strength and sub-normal intelligence, a genetic underclass. Also, if cloning is perfected in humans, there would be no genetic need for men. Cloning might have a detrimental effect on familial relationships. A child born from an adult DNA cloning of his father could be considered a delayed identical twin of one of his parents. It is unknown as to how a human might react if he or she knew he or she was an exact duplicate of an older individual. Supporters of cloning feel that with the careful continuation of research, the technological benefits of cloning clearly outweigh the possible social consequences. In their minds, final products of cloning, like farm animals, and laboratory mice will not be the most important achievement. The applications of cloning

B2B and Reseller Markets Essay

B2B and Reseller Markets Essay B2B and Reseller Markets Essay B2B and Reseller Markets Business-to-business (B2B) concept involves the aspect of decision-making in the majority of industry sectors (Hutt Speh, 2013). The majority of the collaborative business models in the modern times have made an effort to improve the face of marketing through the support of the B2B relationships amongst the entities. The application of the B2B also comes with challenges in the fulfillment of the negotiations and interactions imposed through the collaborative models in managing public business marketing processes (Hutt Speh, 2013). In this research, the description of the use of interaction protocols in defining and managing the processes in B2B relationships forms the core subject. The advancement of technology has enabled businesses conduct marketing electronically facilitating the existence of the Business-to-Business (B2B) E-Commerce (Hutt Speh, 2013). In some of the B2B relationships, the aspect of interaction forms significant challenge. The interactions within the B2B framework occur in three vital layers including content, communication, and business process. Internet-centered B2B related business models are effective in conducting business-to-business (B2B) commerce in the majority of the industry sectors. As one of the instantaneous mediums, the development of technology provides the business entities with new and improvised electronic marketplaces (Hutt Speh, 2013). Business Processes In the layer of business process, the B2B relationships necessitate the management of two distinct business processes including public processes and private processes (Hutt Speh, 2013). The private processes forms part of the enterprise itself managed through each enterprise in an independent way. The private processes receive support within the enterprises through a traditional Workflow Management System, proprietary systems or the ERP systems (Meyer, 2007). The public processes enable the spanning of the organizational boundaries following the involvement with the enterprises involved in the B2B relationship. The processes are under joint management and agreed on by the partners (Meyer, 2007). The activities of the public process have an abstract nature with the support of the private processes. As a clear distinction aid, the public and private processes enable the corresponding organizations abstract the internal process management from the respective management processes across enterprises. The collaborative business models usage have been proposed under several application domains including the supply chain management. The collaborative models have the support of B2B relationship with the inclusion of public business processes jointly managed through partner organizations (Meyer, 2007). Some of the collaborative models necessitate the businesses to establish autonomous B2B with the partners enabling the organizations collaboration. From the perspective of marketing, the collaborative models impose significant challenges in support of the management of the public business processes involved in B2B relationships and they are: Autonomy, the enterprises should have the ability to behave as relative autonomous entities, hiding their internal activities, decisions, and processes (Meyer, 2007). The information system in the management of B2B relationships in the enterprises should have independence. Decentralized management of the corresponding business processes through the enterprises joint management. Peer-to-peer interactions within the enterprises systems for the management of the B2B relationships to imply that the systems interact in a direct means without the independent third party system mediation Negotiation is inclusive in the management of the public processes. Although the proposal of web service composition and workflow approaches still stands in the management of the public processes, there are shortcomings presented in the achievement of autonomy, decentralization, negotiation, and P2P interaction capabilities. B2B Relationships Interaction Protocols The interaction protocols have been in the long run used in the major area of multi-agent systems for the representation of interactions among the involved agents (Hutt Speh, 2013). In B2B context of relationships, interaction protocol enables the management and modeling of the interactions among the involved enterprises in the B2B relationship. The interactions represent the business processes of the public that the enterprises agreed on the aspect of collaboration. Through this means, adapting the concept to the B2B relationships, an interaction protocol enables the description of the high-level communication pattern (Hutt Speh, 2013). This is through the admissible message sequence amid the enterprises playing different roles. The major objective of the interaction protocols is the abstraction of the public processes from specified services involved within the enterprises framework. This is for executing the supported public services internal activities (Hutt Speh, 2013). Within the system, different interaction protocols have one of the highest abstraction levels. An interaction protocol message does not represent the message on the business network. Interaction protocol message in implemented through the application of a lower-level protocol-involving network set of messages (Meyer, 2007). According to B2B three layers application, the interaction protocols transpire in the business process layer with the communication protocols occurring in the layer of communication. The major elements in the interaction protocol include messages, roles, control flows, conditions, deadlines, and logical connectors (Meyer, 2007). The roles are the responsibility in terms of the message sequence the enterprises performs in the B2B relationship. Messages involve the expression of the interactions containing the semantics defining their form. A message can be a representation of the decision, business information, acceptation, acknowledgement, proposal, and rejection. The messages can be of the asynchronous forms or synchronous. Conditions are defined as the messages to represent when messages can be sent (Meyer, 2007). The interaction protocol has two significant control flows. One of the control flows represents messages control flow defining the parallel or the alternative messages of the interaction protocol steps (Meyer, 2007). The second flow is a representation of the internal execution flow of the role describing the different reactions. These are of the roles to the incoming messages. The basic logical connectors are applicable in defining the control flows with deadline defined on the messages that represents time a role sends a message (Hutt Speh, 2013). B2B Standards and Interaction Protocols The B2B standards enable the exchange of messages amongst the enterprises in the B2B relationship. B2B standards are also utilized in the implementation and the exchange of messages defining interaction protocols (Kurtz, 2014). The enterprises should consider an agreement on the B2B standard to be applicable in exchanging the interaction messages. This is to enable the enterprises implement different and independent systems for the joint execution of similar interaction protocols (Kurtz, 2014). This is without the application of the proprietary communication protocol at a lower level. The B2B standards are large in number and consist of the following specification elements: A machine-process able definition language for defining the public processes An exchange sequence defining the transactions possible as required through every message and the constraints of the specified message, performance and like time-outs The business documents structure involved in the content of the message The form in which the messages are packaged and transported on the corresponding networks through specified communication protocols including SMTP and HTTP Messages Security Mechanisms All the B2B standard elements necessitate the implementation of the interaction protocols. Some of the standards specify only the elements defining the business documents (Pride et al, 2007). The rest of the B2B standards enable the specification of the required elements. The implementation of a message using the B2B standards enables each of the interaction protocol messages to consist of more messages. The transaction messages enable the keeping of the message as a unit through the application of responses. In the business transactions, one of the roles performs the requesting of the specified activity with the other one performing the responding activity (Pride Ferrell, 2007). The B2B relationships are under the management of public and private entities with an explicit separation between the private and public processes managed in an independent means (Pride Ferrell, 2007). The modeling of the public business process through an interaction protocol of the B2B relationships focuses on the messages enterprises exchanges for interaction and message orchestration. The interaction protocols facilitates greater enterprise autonomy in marketing framework since the enterprises hides internal activities, decisions and services necessitated for supporting public processes (Pride Ferrell, 2007). Public Business Processes Modeling with Interaction Protocols In the B2B perspective of modeling interaction protocols, the two languages necessary includes the textual modeling language and the graphical language modeling (Villarreal et al, 2003). The former provides the intuitive semantics that enables the business marketing process designers understand and define the public process for interaction representation between partners. The second language enables the enterprises exchange the interaction protocol descriptions. They can be understood and process able through the information system of the B2B relationships for the interaction protocol execution (Villarreal, Salomone, and Chiotti, 2003). The major difference that exists between the interaction protocols and the other approaches for public processes modeling is the interaction protocols not defining the services or activities (Kurtz, 2014). The modeling of the process with the aspect of the interaction protocols draws the focus on the messages sent and received through the roles of the enterprise in every step of the process. For exemplifying the interaction protocol modeling, capacity planning and collaborative planning processes are defined through a partner-partner collaborative model. The collaborative model carries out the business process amongst the enterprises manufacturing belonging to different chains of supply in the market (Kurtz, 2014). The model has a public business process carried out jointly by partners in a decentralized procedure. The collaborative model necessitates the enterprise establishment of an independent B2B relationship with the partners (Kurtz, 2014). Conclusion Interaction protocols in the B2B relationships perspective enable the management and modeling of public business processes consideration through autonomous and heterogeneous partners. This is for the relative achievement of B2B relationships goals. The protocols provide an abstraction framework level for modeling interactions that represents public processes. With the models of the B2B relationships, the messages exchanged by the corresponding enterprises are significant. The protocols of B2B also enable the implementation of interaction protocol for marketing systems fulfilling the collaborative business models requirements. IMP communicative acts facilitate the definition of the B2B relationship interaction protocols without the consideration of the B2B standards applicable in the implementation process. Achieving the independence between the B2B standards and interaction protocols is possible. The independence provides several of the benefits to the business marketing practice. The enterprises have the ability to carry out implementation programs of the interaction protocol with their networks with different partners using B2N standards of different versions. The communicative acts also enable the B2B standards joint functionality for the provision of advanced solutions to the B2B environments. This enables the marketing enterprise systems supporting the B2B relationships to facilitate the understanding of same interaction protocol independent of the technologies used in building them. Visit our online essay writing service to get professional writing help from academic experts who are hired to produce high-quality custom essays from scratch!

Hacker Gary McKinnon Essay Example | Topics and Well Written Essays - 500 words

Hacker Gary McKinnon - Essay Example For instance, an adequate firewall of effective security program could have prevented the hacker from his attempt. He was able to hack the NASA and the Department of Defense computers so easily because he was so conscious about his presence in these networks. For instance, the security measures were lower than expected by him. One cannot imagine blank passwords in computers with high ranking status. But within US Military and NASA computers, there were a number of computers with blank passwords. Besides, there were ‘Administer’ status computers with no password. In short, the lower than expected defensive measures attracted Gary McKinnon to be a regular presence within the US Military and NASA computer network. The following security measures could have been done to stop the hacker. First of all, installation of regularly updated Firewall or other security programs can keep hackers away from accessing computer networks. Gary McKinnon’s regular presence within the US Military and NASA computer network proves the ineffective security system which is unable to detect and prevent hackers. So, the installation of effective Firewall and other security programs is most important. Entering the computer network, the hacker was able to access almost all the data without any restriction. Richard Gissel points out that Gary McKinnon the notorious hacker was able to have the privileges of a administrator within the computer network (Gissel, 171). This fact proves the ineffectiveness of security measures within the network. Besides, the regular updating and changing the passwords could have prevented the hacker from re-entering the network with ease. The hacker made use of early morning and late night to hack the network. This proves that security verification in early morning and late night is not so effective to restrict the

Leadership Personal Issues and the Rules of Law Assignment

Leadership Personal Issues and the Rules of Law - Assignment Example Consequently, they made obligatory that the recruits ought to have two years college credits merits or two years in the military. Nonetheless, there has never been consensus over the issues. Those arguing against the postsecondary education prerequisite hold that the requirement the unreasonably limits the current thin applicant pool by not including the otherwise other qualified applicants. In addition, they argue against the requirement as discriminatory in nature and therefore have a disproportionate negative blow on minorities because it provides unequal opportunities for secondary schooling. They also view that higher education does not entirely provide all the skills looked-for to execute the job since those skills come exclusively because of experience in the policing career. On the contrary, those who support the requirement also have stern reasons for their stand. They believe that policing is a complex career, where knowledge and skills indispensable to do the job effectively can only be scholarly acquired in a classroom, and not exclusively through on-the-job experience. The society has become progressively more well-informed, and it is indispensable for polic e to keep tempo with the larger civic. According to proponents, postsecondary recruits are more mature and more-rounded and are likely to interact easily with the public to offer solutions with understanding rather than authoritarian approach. Consequently, they hold that those who learn criminal justice at higher institutions will bring a more in-depth acquaintance of the system, its diverse components, how it works, as well as the established hypotheses on the causes of crime.  

Critical Response to an Analysis of the Tempest by Shakespeare Research Paper

Critical Response to an Analysis of the Tempest by Shakespeare - Research Paper Example Wylie explains how the play shows that the discourses of colonialism and geography were already complex in the early seventeenth century. He calls it the â€Å"foundational colonial allegory† which is narrated by the ruler of the island, Prospero. Prospero recalls how he was usurped by his brother Antonio and King of Naples, Alonso who were shipwrecked but Prospero and his daughter Miranda reach the current island from which he speaks. The island was completely deserted except for one person whom they found, named, Caliban. Although Caliban owns the land, Prospero compels Caliban to start serving Prospero and consider him his master through his magical powers. This is indicative of the fact that the colonial forces always created an environment for the native people to feel obliged towards the settlers from abroad. The island which Shakespeare sketches in the play is probably one of the islands from the late sixteenth century located in the Mediterranean or the West Atlantic w hich shows how colonialism was a matter of history.

Awareness And Understanding Work Life Balance

Awareness And Understanding Work Life Balance Chapter 1 Introduction Public awareness and understanding of the term ‘work-life balance has grown dramatically in recent years. The high level of interest among employers, consultants, and the media has generated a healthy business in conferences, websites and guides. It is a growth area in academia too, encompassing diverse disciplines including economics, social policy, feminism, sociology, industrial relations, human resource management, health and psychology. The term Work life balance can be defined as â€Å"employment based on emergent new values, which doesnt discriminate against those with caring or other non-work responsibilities, and which provides an opportunity for people to realize their full potential in work and non work domains† (Lewis, 1996). 1.1 Background of the study Todays life environment has put a great demand on employees time to deliver work and non-work responsibilities. This is a central cause of occupational stress and work-life conflict, which has become a costly problem at both the organizational and individual levels. It might take the form of absenteeism, high staff turnover, lost productive value, increased recruitment and selection costs and medical expenses (Arnold, 2005).    According to a recent study by Georgetown University, employee stress from trying to find time for their children correlates with decreased productivity and increased absenteeism. The study found that unplanned absences were costing some businesses nearly $1 million a year (Georgetown University, 2010). In addition to the financial losses associated with this conflict that are clearly documented, the indirect effects of unsympathetic working conditions can include a decrease in motivation, job satisfaction, trust, job commitment, and other important factors that decrease firm profitability (McHugh, 1997). Therefore, despite the fact that many companies neglecting employee needs, conscious HR specialists are trying in many attempts to overcome these problems by introducing new working strategies that satisfy employees and help them to attain certain balance between work and life. Such strategies give the employee greater flexibility upon the time, the place and the style of work. Thes e include part-time work, job sharing, working from home and flexible working time. This flexibility enhances employees ability to adjust the time or submit the work as completed. It can mean compressing 40 hours into four days, starting and ending workdays at different times, or doing some work at home. The reason may be as simple as wanting to better manage a long commute or choosing to arrive at work later so parents can take their children to school. Some companies may offer these options to retain female employees who might consider leaving their jobs after having children. This research emphasizes particularly on flexible working hours (Flexitime) which is one form of flexibility in the working environment. Flexitime is an arrangement where an employee is able to choose when to start and finish work within a specified period of core hours. The reason for this emphasize on flextime is that, it is the most widespread form of workplace flexibility (Erin, 2008) and most previous studies has shown apparent results upon other working strategies and their good influence on work-life balance, but this was not the case with flextime. Another reason for this spur is researcher observations on many cases of flextime where employee missed the control over work-life balance, and that what inspires the idea of this research.   Ãƒâ€šÃ‚  Ãƒâ€šÃ‚  Ãƒâ€šÃ‚   1.2 Problem statement Organizations which adopted family-friendly working arrangements, found it beneficial to their business. In a study about the efficiency of the family-friendly working arrangements, it was found that 90 percent of managers experiencing those arrangements considered they were cost effective for organizations (Dex and Smith, 2002). However, the literature on flexible working arrangements covering a wide range of policies, declared that only some of which might be deemed to support a work-life balance. Moreover, while there is a discussion about the business case for flexible polices and the potential problems it may create for employers, the assumption is often that these policies are invariably beneficial for employees. This is also reflected in the recommendations of the National Framework Committee for Work-life balance policies in Ireland (Helen et al, 2009). Some flexible working arrangements may actually exacerbate work-life conflict, for example, flexibility in the timing of work may result in employees being asked to work unsocial hours. Thus, it is very important to consider the effects of such practices as experienced by employees. Indeed there is very little research on the impact of flexible working hour on workers ability to balance work and other demands, despite this being a major rationale for such practices (Helen et al, 2009). As many Bahraini organizations nowadays are moving toward flexibility, it would be a significant effort to conduct a study that assesses the determination of such practice. Especially that International evidence on the incidence of flexible working arrangements is limited and tends to come from national surveys which, because they are not harmonized, may not be directly comparable. Another factor that boosts the need to this study is the difference in the demography, culture and peoples life style between Western countries and Bahrain. While the incidence of flexible working hours (flextime) is important information in itself, the key questions for this research is: Does it facilitate work-life reconciliation and does it help to improve employees productivity? Other sub-questions might also arise such as: Is there a difference between males and females, or those who have children among those who do not regarding work-life balance? Does employee prefer to manage his/her time or like to be committed to a specified timing because he/she may not be able to manage time? On this basis, this research brings together material from diverse sources to provide an overview of recent research, current thinking and future debates on the significance of flextime and work-life balance, especially to evaluate constructive practices for employee in Bahrain. 1.3 objectives of the study The objective of this study is to put emphasis on the importance of work-life balance for Bahraini employees, and to evaluate its effect on both individual and organizational levels. In addition, this study attempts to assess the impact of adopting flextime working option on employees work-life balance and organizations productivity.  Ãƒâ€šÃ‚  Ãƒâ€šÃ‚   A careful review of research questions led to the development of the following specific research objectives: To explore the existence of a relationship between flextime and work-life balance. To examine the relationship between flextime and productivity. To explore the relationship between work-life balance and productivity. To examine the impact of some demographic variables such as gender, marital status and having children on the work-life balance. 1.4 Significance of the study This significance of this study is its potential contribution to both the theoretical and practical fields. At the theoretical level, the present study is expected to bridge a research gap as most studies focus on either work-life balance or flexible working polices in general. However there is a very little research on the impact of flexible working on work-life balance (Helen et al, 2009). Moreover, it was recommended by some researchers to examine the relationship between specific types of flexible working practices like the flextime and productivity. For the practical contribution, this study is expected to make contribution to Bahraini private and public organizations as it reveals employees preferences on the subject of flexible working time, in addition to exploring the benefits that flextime provides for employers and employees, thus aiding management decision upon adopting such working option. Another feature which grants strength to this study is that the study spots the light on both, the importance of work-life balance and its implications on the organizational and individual levels in the first place, besides exploring the existence of a relationship between flextime and the work-life balance as recommended in previous literatures. 1.5 limitations of the study The greatest limitation to this study is the non-probability sampling technique used; hence the results cannot be generalized on the whole population. Another limitation is that the study was entirely based on self-reported data. Although this is the best way to assess the work-life balance of an employee as it requires some privacy, this method has been criticized that the respondents may give socially desirable answers and bias results (Sackett, Burris, and Callahan 1989). However, anonymity and confidentiality assurance might be the key to make respondents more truthful. Finally, the questionnaire was developed for employees, thus it reflects employees point of views, while it passes over the management respective. Hence it would be a great achievement to combine other research methods such as case studies and focus groups to strength this study. 1.6 organization of study This report is organized into five chapters. The first chapter presents the introduction, significance and limitations of the study. Chapter two provides an extensive literature review and background information on the variables of the study, which are flextime, work-life balance and productivity. The third chapter identifies the research methodology, the sampling technique and the data collection procedure. Chapter four presents the results of data analysis. And the last chapter provides the discussion, a conclusion and recommendations for further studies.

Araby Knight :: essays research papers

"Araby" Knight The short story "Araby" by James Joyce could very well be described as a deep poem written in prose. Read casually, it seems all but incomprehensible, nothing more than a series of depressing impressions and memories thrown together in a jumble and somehow meant to depict a childhood infatuation. Like the sweet milk inside a coconut, the pleasure of this story comes only to the reader who is willing to put forth the intense effort necessary to comprehend it. Or like an onion, peeling off one layer reveals yet another deeper, more pungent level. Practically every insignificant detail becomes vitally important and meaningful as the plot progresses, until it becomes apparent that this story is not about romance at all but rather the "coming of age" that marks everyone's passage into adulthood. This is especially apparent in the point of view, the symbolism of the first paragraph, and the character of the narrator himself. Crucial to an understanding of this story is a solid grasp of its point of view. It is important to recognize that the story is written from an adult perspective. This is revealed in at least two ways: the style and tone or air. The style of writing-its technical construction-is probably the most obvious. From the opening sentence on, the writing leaves no doubt that the author is mature and highly experienced: He uses an exceptional vocabulary, he has a propensity for figurative language, and his sentences are full and well-developed. No child would have written the following sentence, exemplary of the entire story: "The other houses of the street, conscious of decent lives within them, gazed at one another with brown imperturbable faces" (178). That is the work of a polished artist. The tone of the story lends credence to this view. The narrator has matured and put the affair behind him. Looking back, he shakes his head and gently ridicules himself in a nostalgic and sad manner: "her name was like a summons to all my foolish blood" (179); "What innumerable follies laid waste my waking and sleeping thoughts . . . !" (180). In so doing, he disengages himself from the emotions of the infatuation, subtly giving the story a detached air entirely in keeping with the adulthood of the narrator. The boy's are portrayed accurately enough, but little ardor is infused into the narration. Despite its colorful, even picturesque language, it is matter-of-fact.

Forensic Pathologist Career Description

FORENSIC PATHOLOGIST * Correct Name of the Career The full name for a Forensic Pathologist is a Forensic Pathologist. * Education and Training Requirements To become a Forensic Pathologist you will need about 13 to 15 years of college. All this includes four years of college to earn a bachelor’s degree in any major and completing course requirements for medical school. Second, you would need 4 years to earn a M. D. or D. O. Next, there is 4-5 years of practicing forensic pathology. Also you would need one year fellowship in forensic pathology.This means that they would put their training into the real world and work there jobs. After residency you must pass the test and receive a certificate as a certified Forensic Pathologist. * Responsibilities and Daily Activities The main job of a Forensic Pathologist is to find the cause of the death, what caused the malfunction of the body, and to make autopsy reports. They do this by collecting and examine blood, tissue and DNA samples. They also investigate the scene where the victim died and make hypothesis based on the surroundings.Forensic Pathologist could also make hypothesis based on your health and living conditions of the victim. The work hours are usually 40 hours a week with weekends off. It mostly depends on the office you work at. * Salary Range The salary range for a Forensic Pathologist is $28,505-$226,321. The pay depends on the amount of experience and where you work. Pathologist in private offices would get paid a little higher compared to federal offices. * Documentation of Sources (2008). Forensic Pathologist. ONLINE] Available at: http://explorehealthcareers. org/en/Career/129/Forensic_Pathologist#Tab=Overview. [Last Accessed 28 August 2012]. S. E. Smith (2012). For Medical Students, What Does Residency Mean?. [ONLINE] Available at: http://www. wisegeek. com/for-medical-students-what-does-residency-mean. htm. [Last Accessed 28 August 2012]. (2012). Forensic Pathologist Salary . [ONLINE] Availa ble at: http://www. payscale. com/research/US/Job=Forensic__Pathologist/Salary. [Last Accessed 28 August 2012]. (2009). Hours and Working Conditions . ONLINE] Available at: http://www. forensicpathologist. com/. [Last Accessed 28 August 2012]. * Self Reflection I would enjoy this career because I enjoy solving mystery and it isn’t a job where you write reports all day, there is work that actually means something. I could collect tissue and blood samples and observe the body to find the cause of death. Also, the pay is really good. The only thing that is bad for me it would take a really long time for certification. It would take 13-15 years after high school to get certification.

Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Essays

Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Essays Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Paper Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Paper Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Objective: To construct a coffee cup calorimeter, measure its calorimeter constant, and determine the enthalpy of decomposition and formation of hydrogen peroxide. Background: This experiment is a classic thermodynamics lab. In it, we attempt to measure the enthalpy (? H) of a chemical reaction. The main obstacle is that this is a quantity that cannot be measured directly. It instead is observed as heat from one substance is transferred to another while being monitored with a thermometer. A temperature change in a known substance (such as water) can be related to a certain amount of heat (q). q ? ? mass ? ?T f ? Ti ? ? Specific heat ? Our calorimeter is going to be a set of Styrofoam coffee cups. These cups are well known insulators, and they should keep most heat inside themselves. They are not perfect, however, and they will absorb some of the heat from the process, so we need to determine the calorimeter constant. For any process, the first law of thermodynamics must be followed. ?E ? 0 ? qsystem ? surroundings However, if the calorimeter itself is going to absorb some energy, it must be accounted for as well. ?E ? 0 ? qsystem ? qsurroundings ? qcalorimeter In the first portion of our experiment, a known mass of water with a known temperature will be used to determine how much energy is being absorbed by the calorimeter. Once this is known, the change in enthalpy from the decomposition of hydrogen peroxide can be determined. 2H2O2(aq) ? 2H2O(l) + O2(g) A solution o f hydrogen peroxide will be added to the calorimeter and its temperature will be monitored for a short time. A small amount of iron nitrate will be added to catalyze the reaction and produce a measureable temperature change. This temperature change will be plotted over time. Using this plot, the mass of solution, its specific heat, the calorimeter constant, and the temperature change, we will be able to determine the enthalpy for the reaction. Procedure Week One – Determination of the calorimeter constant Objective – To measure the amount of energy absorbed by the calorimeter while observing a change in temperature. 1. Using a top loading balance, determine the mass of Styrofoam cup and a stir bar. . Place about 100mL of warm deionized water in the cup. Monitor its temperature for 3-4 minutes. Record the temperature every minute. 3. Using a top loading balance, determine the mass of a second Styrofoam cup and a stir bar. 4. Place about 100mL of room temperature water in the cup. Monitor its temperature for 34 minutes. Record the temperature every minute. 5. When the temperatur e of the warm water is about 20? C above the room temperature water, quickly pour it into the room temperature water. Continue monitoring the temperature and recording it every minute. . After several minutes, when the temperature is no longer changing quickly, record the mass of the combined water. 7. Repeat this procedure at least one more time. Week One – Preparation of a standard potassium permanganate solution Objective: To prepare a potassium permanganate solution with a known concentration. This will be used in a second week to standardize a hydrogen peroxide solution. 1. Obtain enough potassium permanganate to make 250. 0mL of a 0. 02M solution. NOTE: Use the analytical balance for this operation. It is NOT necessary to get exactly the amount you calculated. It is only important to be close to this amount, and to record the amount you took accurately. 2. Dissolve this in a small amount of water before diluting it to a final volume of 250. 0mL in a volumetric flask. 3. Transfer this to a clean dry bottle, and store it for use next week. Week Two – Determination of the Concentration of hydrogen peroxide. Objective: Determine the concentration of hydrogen peroxide and use this result to know how many moles are being decomposed. 1. Pipet 2. 0mL of hydrogen peroxide into a small Erlenmeyer flask. Add about 10mL of 4. 0M H2SO4 and 50mL of deionized water. 2. Rinse and fill a buret with the potassium permanganate solution that was prepared last week. 3. Start to titrate the solution. It should stay clear until the end point is reached. The endpoint is the lightest permanent pink color that persists. 4. Repeat so that you have three precise trials. 5. Calculate the concentratio n of the hydrogen peroxide solution. The balanced chemical equation is written below. 2MnO4-(aq) + 5H2O2(aq) + 6H+(aq) ? Mn2+(aq) + 5O2(g) + 8H2O(l) Week Two – Enthalpy of Decomposition of Hydrogen Peroxide Objective: Use the calorimeter from last week to determine the enthalpy of decomposition of hydrogen peroxide. 1. Add 50. 0mL of hydrogen peroxide to the tared Styrofoam cup using a graduated cylinder. 2. Obtain 10. 0mL of 0. 5M iron(III)nitrate in a graduated cylinder. 3. Start recording the temperature of the hydrogen peroxide solution. At the five minute mark, quickly add the iron nitrate, but do not record the temperature. 4. At the six minute mark start recording temperatures again until you reach the 12 minute mark. . Dump out the solution, and repeat if time permits. Calorimeter Constant Calculations It is very straightforward to determine the energy that is gained or lost when a known mass of water is heated or cooled. ?E ? 0 ? qsystem ? qsurroundings ? qcalorimete r From the data above, you will need to plot the temperature of the room temperature water and extrapolate that line out a bit. That will be its initial temperature (T1). Extrapolate through the points after mixing, and this will be its final temperature (T2). From this the heat gained by the room temperature water can be calculated. qroom ? mass T2 ? T1 Cwater ? This is repeated for the warm water. Extrapolate the warm water’s temperature through the time when it is mixed. This is will be its initial temperature (T3). Extrapolate through the points after mixing and this will be its final temperature (T2). From this the heat lost by the warm water can be calculated. qwarm ? ? mass T3 ? T2 Cwater ? The Calorimeter constant will be the difference between these two. Whatever energy lost by the warm water should have been gained by the room temperature water, except for what was gained by the cup. qroom ? qwarm ? qcup ? T2 ? T1 ? ? Ccup ? A sample for the plot is below. The v ertical line is the time when the two water samples were mixed. Mixing Curve for Water 42 37 T3 Temp (C) Room Temp Water 32 27 T1 22 0 2 4 6 Time (min) 8 10 12 T2 Warm Water Calculations for the Enthalpy of Decomposition of Hydrogen Peroxide The solution here is mostly water, and it is assumed to have a specific heat of 4. 184 J/g? C. There are two things that would absorb the energy lost by hydrogen peroxide: the solution, and the cup. ? qH 2O2 ? qsolution ? qcup The ‘q’ of the solution is calculated in a way similar to that of water. The time and temperature information will have to be plotted. The only thing that is different here, is that the temperature of just one thing is being recorded. There will only be two temperatures, T1 and T2. qsolution ? ? mass T2 ? T1 ? 4. 184 J ? g ? C ? qcup ? ? Ccup ? ?T2 ? T1 ? Here Ccup was determined last week. To determine the ? H in terms of joules per mole, one will have to divide the energy by the number of moles in the solution. moles ? M H ? 2 O2 ? ? Volume ? H 2O2 Report Information taken from this lab included the following. Week One ? Mass of room temperature water ? Mass of cup(s) and stirring bar(s) ? Mass of warm water ? Mass of combined water ? Initial temperatures for water ? Post mixing temperatures for water ? Time ? Mass of potassium permanganate ? Volume of potassium permanganate solution Week Two ? Volume of hydrogen peroxide solution titrated. ? Volume of potassium permanganate used. ? Mass of cup and stirring bar. ? Mass of hydrogen peroxide ? Mass of mixed peroxide and iron ? Temperature prior to mixing. ? Temperature after mixing. ? Time From this, one will need to calculate: ? ? ? ? The concentration of potassium permanganate The concentration of hydrogen peroxide (averaged) The calorimeter constant (averaged) The enthalpy of decomposition of hydrogen peroxide (averaged) In a 1 – 2 page typed report please give the following: ? ? ? A brief 2-3 sentence abstract describing the experiment and the final result. Work detailing how quantities were determined. A brief one paragraph discussion dealing with the comparison of the result to the literature value of (-94. 6 kJ/mole). What specific sources of error might account for a difference between your result and the literature value.

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