Nursing Research and Evidence-Based Practice Essay Example for Free

Nursing Research and Evidence-Based Practice Essay I did not understand why I had to take a research class when all I wanted to do was be a staff nurse in a critical care unit. Research? Evidence-based practice? Why are these topics in the nursing program? I have enough to do just learning all the content in my clinical courses. What do research and evidence have to do with developing my nursing abilities? I trust the faculty, the textbooks, and clinical experience to prepare me for nursing. I’m already getting what I need to know. That was my earlier attitude. Now that I am practicing, I have a new appreciation for nursing research and the evidence it provides for application to practice. I have an entirely different way of addressing clinical questions. I’m starting to ask questions about how I can improve the care I give to patients and how I can be involved in my workplace’s efforts to improve care for the patients it serves. I have discovered by purposeful reading in my practice area that research reports and research summaries contain many implications that apply to practice in the critical care unit.  ¦ QUESTIONS TO CONSIDER WHILE READING THIS CHAPTER: 1 How can faculty encourage students to read research journals? 2 How does research affect nursing practice? 3 How can nurses motivate colleagues to base their practice on research? KEY TERMS Clinical nurse researcher (CNR) An advanced practice nurse who is doctorally prepared and directs and participates in clinical research. Clinical nurse specialist (CNS) An advanced practice nurse who provides direct care to clients and participates in health education and research. Clinical practice guideline (CPG) an evidence-based guide to clinical practice developed by experts in a particular ? eld for direct application in clinical environments. Control group Subjects in an experiment who do not receive the experimental treatment and whose performance provides a baseline against which the effects of the treatment can be measured. When a true experimental design is not used, this group is usually called a comparison group. Data collection The process of acquiring existing information or developing new information. 104 Nursing Research and Evidence-Based Practice CHAPTER 6 105 Empirical Having a foundation based on data gathered through the senses (e. g. , observation or experience) rather than purely through theorizing or logic. Ethnography A qualitative research method for the purpose of investigating cultures that involves data collection, description, and analysis of data to develop a theory of cultural behavior. Evidence-based practice The process of systematically ? nding, appraising, and using research ? ndings as the basis for clinical practice. Experimental design A design that includes randomization, a control group, and manipulation between or among variables to examine probability and causality among selected variables for the purpose of predicting and controlling phenomena. Generalizability The inference that ? ndings can be generalized from the sample to the entire population. Grant Proposal developed to seek research funding from private or public agencies. Grounded theory A qualitative research design used to collect and analyze data with the aim of developing theories grounded in real-world observations. This method is used to study a social process. Meta-analysis Quantitative merging of ? ndings from several studies to determine what is known about a phenomenon. Methodologic design A research design used to develop the validity and reliability of instruments that measure research concepts and variables. Naturalistic paradigm A holistic view of nature and the direction of science that guides qualitative research. Needs assessment A study in which the researcher collects data for estimating the needs of a group, usually for resource allocation. Phenomenology A qualitative research design that uses inductive descriptive methodology to describe the lived experiences of study participants. Pilot study A smaller version of a proposed study conducted to develop or re? ne methodology, such as treatment, instruments, or data collection process to be used in a larger study. Qualitative research A systematic, subjective approach used to describe life experiences and give them meaning. Quantitative research A formal, objective, systematic process used to describe and test relationships and examine cause-and-effect interactions among variables. Quasi-experimental research A type of quantitative research study design that lacks one of the components (randomization, control group, manipulation of one or more variables) of an experimental design. Randomization The assignment of subjects to treatment conditions in a random manner (determined by chance alone). Secondary analysis A research design in which data previously collected in another study are analyzed. State-of-the-science summary A merging of ? ndings from several studies concerning the same topic. Examples include meta-analysis with a quantitative approach and integrative review with a descriptive approach. Survey A nonexperimental research design that focuses on obtaining information regarding the status quo of a situation, often through direct questioning of participants. Triangulation The use of a variety of methods to collect data on the same concept. LEARNING OUTCOMES After studying this chapter, the reader will be able to: 1 Summarize major points in the evolution of nursing research in relation to contemporary nursing. 2 Evaluate the in? uence of nursing research on current nursing and health care practices. 3 Differentiate among nursing research methods. 4 Evaluate the quality of research studies using established criteria. 5 Participate in the research process. 6 Use research ? ndings to improve nursing practice. 106 UNIT ONE The Development of Nursing CHAPTER OVERVIEW This chapter provides basic knowledge regarding the research process and the ultimate importance of evidence-based nursing practice. The intent is to inspire an appreciation for nursing research and to show how it can improve nursing practice and how results can be translated into health policy. Nursing research is de? ned as a systematic approach used to examine phenomena important to nursing and nurses. A summary of major points in the evolution of nursing research in relation to contemporary nursing is presented. A description of private and public organizations that fund research is given, and their research priorities are listed. Major research designs are brie? y described, and examples of each are given. Nurses of all educational levels are encouraged to participate in and promote nursing research at varying degrees. The process of locating research and evidence for practice is reviewed. Students are introduced to the research process and guided in the process of critically appraising published research and research syntheses. Ethical issues related to research are examined, and historical examples of unethical research are given. The functions of the institutional review board (IRB) and the use of informed consent in protecting the rights of human subjects are emphasized. DEFINITION OF NURSING RESEARCH Research is a process of systematic inquiry or study to build knowledge in a discipline. The purpose of research is to develop an empirical body of knowledge for a discipline or profession. Speci? cally, research validates and re? nes existing knowledge and develops new knowledge (Burns and Grove, 2007). The results of research process provide a foundation on which practice decisions and behaviors are laid. Research results create a strong scienti? c base for nursing practice, especially when deliberately and carefully evaluated for application to speci? c clinical topics (Melnyk and Fineout-Overholt, 2005). In recent decades the nursing discipline has begun to pay much greater attention to the necessity of participating in research. Nursing research is a systematic approach used to examine phenomena important to nursing and nurses. Because nursing is a practice profession, it is important that clinical practice be based on scienti? c knowledge. Evidence generated by nursing research provides support for the quality and cost-effectiveness of nursing interventions. Thus recipients of health care—and particularly nursing care—reap bene? ts when nurses attend to research evidence and introduce change based on that evidence into nursing practice. The introduction of evidence-based change into the direct provision of nursing care may occur at the individual level of a particular nurse or at varied organizational or social levels. In addition to nursing research aimed at affecting the direct provision of nursing and health care to recipients of nursing care, nursing research also is needed to generate knowledge in areas that affect nursing care processes indirectly. Research within the realms of nursing education, nursing administration, health services, characteristics of nurses, and nursing roles provides evidence for effectively changing these supporting areas of nursing knowledge (Burns and Grove, 2007). Today the importance of nursing research to the discipline is recognized. However, much nursing history underlies the current state of acceptance. EVOLUTION OF NURSING RESEARCH Nursing research began with the work of Florence Nightingale during the Crimean War. After Florence Nightingale’s work, the pattern that nursing research followed was closely related to the problems confronting nurses. For example, nursing education was the focus of most research studies between 1900 and 1940. As more nurses received their education Nursing Research and Evidence-Based Practice CHAPTER 6 107 in a university setting, studies regarding student characteristics and satisfactions were conducted. As more nurses pursued a college education, staf? ng patterns in hospitals changed because students were not as readily available as when more students were enrolled in hospitalaf? liated diploma programs. During this period, researchers became interested in studying nurses. Questions such as what type of person enters nursing and how are nurses perceived by other groups guided research investigations. Teaching, administration, and curriculum were studies that dominated nursing research until the 1970s. By the 1970s more doctorally prepared nurses were conducting research, and there was a shift to studies that focused on the improvement of patient care. The 1980s brought nursing research to a new stage of development. There were many more quali? ed nurse researchers than ever, widespread availability of computers for collection and analysis of data, and a realization that research is a vital part of professional nursing (Polit and Beck, 2006). Nurse researchers began conducting studies based on the naturalistic paradigm. These studies were qualitative rather than quantitative. In addition, instead of conducting many small, unrelated research studies, teams of researchers, often interdisciplinary, began conducting programs of research to build bodies of knowledge related to speci? c topics, such as urinary incontinence, decubitus ulcers, pain, and quality of life. The 1990s brought increasing concern about health care reform, and now in the twenty-? rst century, research studies focus on important health care delivery issues, such as cost, quality, and access. Research ? ndings are being used increasingly as the basis for clinical decisions. Evidencebased practice (EBP) can be de? ned as the process of systematically ? nding, appraising, and using research ? ndings as a basis for making decisions about patient care. The rise of technology and the worldwide access and ? ow of information have transformed the decision-making processes of practitioners. Helpful informational websites for busy practitioners are listed in Box 6-1. No longer do nurses simply compare outcomes of patient care with other units in the B O X 6–1 Helpful Websites l f l b i National Guideline Clearinghouse—resource for evidence-based clinical practice guidelines www. guidelines. gov US Department of Veterans Affairs Clinical Practice Guidelines www. healthquality. va. gov AHRQ Healthcare Innovations Exchange—innovations and tools to improve health care www. innovations. ahrq. gov/index. aspx The Evidence-Based Medicine Education Center of Excellence—extensive list of databases, journals, and textbooks http://library. ncahec. net/ebm/pages/resources. htm U. S. National Institute for Health Consensus statements http://consensus. nih. gov Centre for Evidence-Based Nursing, based at University of York—United Kingdom www. york. ac. uk/healthsciences/centres/evidence/cebn. htm The Joanna Briggs Institute, based at Royal Adelaide Hospital and the University of Adelaide, Australia—multiple evidence resources for practice www. joannabriggs. edu. au Cochrane Center—resource for evidence-based clinical practice guidelines www. cochrane. org 108 UNIT ONE The Development of Nursing same hospital. Nurses and other health care professionals are more likely to look for solutions, choices, and outcomes for patients that represent the best available knowledge internationally (Hamer and Collinson, 2005). RESEARCH PRIORITIES Why set priorities for research in the nursing discipline? Can nurses do research in areas that match personal areas of interest? The answer to the second question is, yes, certainly. But nursing exists to provide high-quality nursing care to individuals in need of health-promoting, health-sustaining, and health-restoring strategies. The main outcome of research activity for a nurse is to eventually put the knowledge gained to work in health care delivery. Research priorities, often set by groups that fund research, encourage nurse researchers to invest effort and money into those areas of research likely to generate the most bene? t to recipients of care. Of course the funding opportunities offered by such groups do not hurt the research enterprise either. Research costs money. Thus nurses engaged in research often match personal interests with funding opportunities that are available during the planning phase for a proposed investigation. Two major sources of funding for nursing research are the National Institute of Nursing Research (NINR) and the Agency for Healthcare Research and Quality (AHRQ) (formerly known as the Agency for Health Care Policy and Research [AHCPR] and reauthorized as AHRQ by Congress in 1999). Both of these organizations are funded by federal congressional appropriations. Private foundations and nursing organizations also provide funding for nursing research. National Institute of Nursing Research As part of the National Institutes of Health (NIH), the NINR supports research on the biologic and behavioral aspects of critical health problems that confront the nation. The NINR’s research focus encompasses â€Å"health promotion and disease prevention, quality of life, health disparities, and end-of-life† (NINR Strategic Plan 2006-2010, 2006). A small sampling of potentially supported research topics includes those aimed at: ? Determining disease risk and treatment through utilizing genetic information ? Determining effective health-promotion strategies for individuals, families, and communities ? Discovering approaches that encourage people to effectively take responsibility for symptom management and health promotion ? Assisting in identi? cation and effective management of symptoms related to acute and chronic disease ? Improving clinical settings in which care is provided ? Improving the quality of care giving in settings such as long-term care facilities, the home, and the community ? Understanding predisposition to disease, socioeconomic factors that in? uence health, and cultural health practices that either protect from or expose to risk for health problems ? Improving symptom management for those at end of life The areas of research emphasis published by the NINR are useful guides for investigators developing proposals but are not considered to be prescriptive in nature. Investigators bring to bear their own unique expertise and creativity when proposing research in harmony with NINR priority research areas. Annually the NINR conducts a roundtable discussion with multiple nursing organizations to obtain the feedback of the disciplines regarding the need for continued or new research Nursing Research and Evidence-Based Practice CHAPTER 6 109 emphases. Information obtained is used in setting future research agendas and making decisions about funding of proposals submitted by researchers (Of? ce of Science Policy and Public Liaison, NINR, 2009). The NINR website details current announcements regarding research priorities (www. ninr. nih. gov/ResearchAndFunding). Agency for Healthcare Research and Quality The AHRQ broadly de? nes its mission as â€Å"improving the quality, safety, ef? ciency, and effectiveness of health care for all Americans† (AHRQ, 2009a). As an agency of the U. S. Department of Health and Human Services, the AHRQ’s health-related aims are to reduce the risk of harm by promoting delivery of the best possible health care, improve health care outcomes by encouraging the use of evidence to make informed health care decisions, transform research into practice to facilitate wider access to effective health care services, and reduce unnecessary costs (AHRQ, 2009a). Since the inception of the agency in 1989, strategic goals have centered on supporting improvements in health outcomes, strengthening measurement of health care quality indicators, and fostering access to and cost-effectiveness of health care. The 1999 reauthorizing legislation expanded the role of the agency by directing the AHRQ to: ? Improve the quality of health care through scienti? c inquiry, dissemination of ? ndings, and facilitation of public access to information. ? Promote patient safety and reduce medical errors through scienti? c inquiry, building partnerships with health care providers, and establishment of centers for education and research on therapeutics (CERTs). ? Advance the use of information technology for coordinating patient care and conducting quality and outcomes research. ? Establish an of? ce on priority populations to ensure that the needs of low-income groups, minorities, women, children, the elderly, and individuals with special health care needs are addressed by the agency’s research efforts. The research-related activities of the AHRQ are quite varied, but a recent shift emphasizes a more deliberate translation of research evidence into practice. In a process similar to that used by the NIH, investigators are invited to submit research proposals for possible funding through grant announcements. A listing of current areas of the agency’s research interests can be found online at www. ahrq. gov/fund/portfolio. htm. The AHRQ actively promotes EBP, partially through the establishment of 14 EBP centers (EPCs) in the United States and Canada. EPCs conduct research on assigned clinical care topics and generate reports on the effectiveness of health care methodologies. Health care providers may then use the evidence in developing site-speci? c guidelines that direct clinical practice. AHRQ also actively maintains the National Guideline Clearinghouse (www. guidelines. gov), an website that makes available to health care professionals a wide array of clinical practice guidelines that may be considered in health care decision making. Another recent addition to AHRQ’s initiatives is the Healthcare Innovations Exchange (2009b), which provides a public source of information about innovations taking place in health care delivery. Submitted innovations are reviewed for the quality of achieved outcomes, providing evidence as a foundation for decision making by others who may be searching for or considering similar innovations. Although most AHRQ activities are intended to support health care professionals and institutions, the agency supports health care recipients by designing some information speci? cally for dissemination to the lay public (AHRQ, 2009a). 110 UNIT ONE The Development of Nursing Private Foundations Federal funding is available through the NIH and the AHRQ. However, because obtaining money for research is becoming increasingly competitive, voluntary foundations and private and community-based organizations should be investigated as possible funding sources. Many foundations and corporate direct-giving programs are interested in funding health care projects and research. Computer databases and guides to funding are available in local libraries. In addition, grant-seeking enterprises often purchase subscriptions that allow computer access to enhanced listings of funding foundations that include information about the types of projects those foundations typically fund. Though subscriptions are expensive, costs are often balanced by the ef? ciency with which suitable funding prospects are identi? ed. An example of such a service is Prospect Research Online (www. iwave. com). Private foundations, such as the Robert Wood Johnson Foundation (2009a, 2009b) or the W. K. Kellogg Foundation (2009), offer program funding for health-related research. Investigators should be encouraged to pursue funding for small projects through local sources or private foundations until a track record is established in research design and implementation. After several years of experience in the research arena, investigators are more likely to be successful in securing funding through federal sources, such as the NIH. Nursing Organizations Sigma Theta Tau International (STTI), the American Nurses Association (ANA), and the Oncology Nurses Society (ONS), are a few of the nursing organizations that fund research studies. STTI makes research grant awards to increase scienti? c knowledge related to nursing practice. STTI supports creative interdisciplinary research and places importance on identifying â€Å"best practices† and benchmark innovations. Awards are made at the international and local chapter levels. The ANA awards small grants through the American Nurses Foundation. Specialty nursing organizations offer grants to support research related to their specialty. For example, the ONS awards grants that focus on issues related to oncology. To summarize, multiple potential sources of funding are available for research projects. The individual or group wishing to conduct research will need to carefully develop a proposal, search for a possible funding source, and submit the proposal. Libraries and the Internet provide ample information about the many foundations and organizations interested in funding research endeavors. Most research institutions establish of? ces that help in the search and procurement of funding. Thus researchers are supported in their work of knowledge building. COMPONENTS OF THE RESEARCH PROCESS The research process involves conceptualizing a research study, planning and implementing that study, and communicating the ? ndings. The process involves a logical ? ow as each step builds on the previous steps. These steps should be included in published research reports so that the reader has a basis for understanding and critiquing the study (Box 6-2). STUDY DESIGNS Study designs are plans that tell a researcher how data are to be collected, from whom data are to be collected, and how data will be analyzed to answer speci? c research questions. Research studies are classi? ed into two basic methods: quantitative and qualitative, two distinctly different approaches to conducting research. The researcher chooses the method based on the research question and the current level of knowledge about the phenomena and the problem to be studied. Quantitative research is a formal, objective, systematic process in which numeric

Essay on the Woman Protagonist in The Birthmark -- Birthmark Essays

Woman Protagonist in â€Å"The Birthmark†Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚      In Nathaniel Hawthorne’s short story, â€Å"The Birthmark,† the reader finds an excellent example of a woman who is so superior to her male counterpart that she has to be labeled the protagonist of the tale. This essay will demonstrate why this designation is deserved by the female character, Georgiana.    In the opening paragraph of â€Å"The Birthmark† the narrator introduces Aylmer as a scientist whose love for Georgiana is â€Å"more attractive than any chemical one.† And indeed, he is such a passionate scientist that everything meaningful in his life has to be related to science. He is incapable of developing beyond this stage of personal growth. Georgiana, on the other hand, enters the tale as a rather â€Å"simple† young lady, but soon grows and grows and grows –n that most important spiritual virtue of love. As the woman-protagonist advances in her spirituality, her unfortunate husband, Aylmer, declines in virtue.    Even after Aylmer has â€Å"persuaded a beautiful woman to become his wife,† he is not capable of loving her properly, unselfishly, because he â€Å"had devoted himself, however, too unreservedly to scientific studies ever to be weaned from them by any second passion.† The narrator seeks to justify this error or lack in Aylmer by explaining that â€Å"it was not unusual for the love of science to rival the love of woman in its depth and absorbing energy.† Already at the outset of the tale, the reader perceives that Georgiana is going to be shortchanged in this marriage. She is exposed to the problem initially when her husband asks whether â€Å"it never occurred to you that the mark upon your cheek might be removed?'' Aylmer is in quest of physical perfection in his wife; unfortun... ...memorable: â€Å"The fatal hand had grappled with the mystery of life, and was the bond by which an angelic spirit kept itself in union with a mortal frame.† The soul of this angelic, loving woman, â€Å"lingering a moment near her husband, took its heavenward flight.† A true angel of womankind is ascending to heaven.    The distinct and obvious spiritual superiority of Georgiana, as compared to the retarded, backward, stunted, minimal growth thereof in Aylmer, is adequate cause for designating the lovely woman of the tale the protagonist. She possesses qualities of heroic dimension; he does not.    WORKS CITED    Hawthorne, Nathaniel . The Birthmark Electronic Text Center, University of Virginia Library http://etext.lib.virginia.edu/etcbin/toccer-new2?id=HawBirt.sgm&images=images/modeng&data=/texts/english/modeng/parsed&tag=public&part=1&division=div1

Writing and Classification Essay Sample

A classification essay is written by classifying the subject or matter into various divisions or categories. The purpose is it organizes ideas into appropriate and constructive categories. Some very good classification essay sample topics would be Music, books, movies, sports, etc. If classification essay sample is, for example, on topic sports then it would look like this 1. Introduction to sports- explain here briefly how you are going to categorize sports. 2. Classification of sports- write here the categories of sports in detail †¢Indoor games 1. Board games 2. Court games 3. Table games †¢Outdoor games . Athletics 2. Team games like football, cricket 3. Individual games like tennis, badminton †¢Summary of sports – end it with a summary on sports This is a short example of how a classification essay should look. †¢Ã¢â‚¬ Americans can be divided into three groups–smokers, nonsmokers and that expanding pack of us who have quit. Those who have neve r smoked don't know what they're missing, but former smokers, ex-smokers, reformed smokers can never forget. We are veterans of a personal war, linked by that watershed experience of ceasing to smoke and by the temptation to have just one more cigarette.For almost all of us ex-smokers, smoking continues to play an important role in our lives. And now that it is being restricted in restaurants around the country and will be banned in almost all indoor public places in New York State starting next month, it is vital that everyone understand the different emotional states cessation of smoking can cause. I have observed four of them; and in the interest of science I have classified them as those of the zealot, the evangelist, the elect and the serene. Each day, each category gains new recruits. â€Å"

Psychology and Pets Essay

When you are tired of stress from work, pets can encourage you to go out for a walk to release stress or play with you in the garden. Pets bring you some moments of relaxation and mind refreshment, which makes you never feel lonely even when you live with no one. It is obvious that pets can create new attitudes towards life for people, particularly for the disabled and withdrawn who are always not confident in communicating or taking part in social activities. By keeping pets, they may become more sociable, open and approachable because they can interact, â€Å"communicate† and play with their pets. Due to the advantages it offers, keeping pets becomes a popular, especially in Eastern countries, for the older generation, who often live far from their children. In these situations, pets are truly their close friends, helping them remove the feeling of emptiness and loneliness. The companionship of pets may meet some basic human needs, which is not easily explained in theory but is believed by most people. Pets guard houses and save people’s lives. In many cases, people choose to keep dogs for their home security. The houses will become safer because strangers might be scared that they will be attacked by the animals inside. When you are out and you leave your house empty, you do not have to worry that burglars may break into the house and take away valuable assets even when you return home at mid night. If there is any intruder or strange persons around your house, dogs will bark loudly, making a noise to frighten the stranger and give you a warning. Pets can protect not only the assets but also save people’s lives. Dogs and sometimes cats can attack the burglars to protect the owners in case they are harmed. Many owners can stay alive due to the protection from the dogs they keep in their houses. Pets enhance nice behavior among children Researchers showed that children who usually play with pets can behave nicely and become more caring. Playing with pets and learning how to treat them with love may help uncommunicative children be agile and affable, which is important for their growth in the distant future. Kids sometimes find no interest in getting outside, but they may alter their decisions immediately if they see that they can take a cat or a dog along. Teenagers, whose parents are too busy to spend time with them, sometimes have to face with bland lives and loneliness. In these scenarios, they consider pets to be their alter ego who they can play and talk with, which can solve some kind of emotional problems that children are vulnerable to get. It is believed that teaching kids to treat kittens and puppies with care and kindness is of great importance for forming their behaviors and characteristics. To sum up, keeping pets is not merely a habit but is one way of relaxation and amusement. Moreover, keeping pets does not only guard your house but also fulfills some basic mental human needs.

Free Essays on Early Rome

Jan M. Mason 11: -11:50 MWF 1502 Early roman history Chapter 4 Review As Greece reached the height of its prosperity Rome which lye slightly to the west slowly began its rise as a civilization. The Greeks centered their culture around Art and literature whereas opposed to the Romans who settled their culture upon warfare and leadership. Without planning, would rise very steadily as an empire. Shortly before Christ most of the surrounding cities and nations were at peace under Rome's rule. Early Romans kept no written records. Their history is so mixed up with fables and myths that historians have difficulty distinguishing fact from fiction. Historians only know of two early works of Roman history, the history of Livy and the Roman Antiquities of Dionysius of Halicarnassus. The old legends say that Romulus founded the city in 753 BC. Romulus was a mythical person, but there is some evidence that the kings who are said to have followed him actually existed. Shortly before 600 BC several Etruscan princes from conquered Rome across the Tiber River. Taraquinius Priscus, the first of the Etruscan kings, drained the city’s marshes. Servius Tullius, the second Etruscan king, made a treaty with the Latin cities, which acknowledged Rome as the head of all Latium. The last king, Tarquinius Superbus, was a tyrant who opposed the people scorned religion. Under the rule of the Etruscans, Rome grew in importance and power. Great temples and impressive public works were constructed. Trade prospered and by the end of the 6th century BC Rome had become the largest and richest city in Italy. The old Latin aristocracy ended up rebelling against the Etruscan kings. Junius Brutus led the rebellion against Tarquinius Superbus in 509 BC. The young republic was now set out on its long career of almost constant warfare and conquest. At the time it did not seem destined to rule the civilized world. It was only a tiny city-state, much lik... Free Essays on Early Rome Free Essays on Early Rome Jan M. Mason 11: -11:50 MWF 1502 Early roman history Chapter 4 Review As Greece reached the height of its prosperity Rome which lye slightly to the west slowly began its rise as a civilization. The Greeks centered their culture around Art and literature whereas opposed to the Romans who settled their culture upon warfare and leadership. Without planning, would rise very steadily as an empire. Shortly before Christ most of the surrounding cities and nations were at peace under Rome's rule. Early Romans kept no written records. Their history is so mixed up with fables and myths that historians have difficulty distinguishing fact from fiction. Historians only know of two early works of Roman history, the history of Livy and the Roman Antiquities of Dionysius of Halicarnassus. The old legends say that Romulus founded the city in 753 BC. Romulus was a mythical person, but there is some evidence that the kings who are said to have followed him actually existed. Shortly before 600 BC several Etruscan princes from conquered Rome across the Tiber River. Taraquinius Priscus, the first of the Etruscan kings, drained the city’s marshes. Servius Tullius, the second Etruscan king, made a treaty with the Latin cities, which acknowledged Rome as the head of all Latium. The last king, Tarquinius Superbus, was a tyrant who opposed the people scorned religion. Under the rule of the Etruscans, Rome grew in importance and power. Great temples and impressive public works were constructed. Trade prospered and by the end of the 6th century BC Rome had become the largest and richest city in Italy. The old Latin aristocracy ended up rebelling against the Etruscan kings. Junius Brutus led the rebellion against Tarquinius Superbus in 509 BC. The young republic was now set out on its long career of almost constant warfare and conquest. At the time it did not seem destined to rule the civilized world. It was only a tiny city-state, much lik...

Haber-Bosch Process Information

Haber-Bosch Process Information The Haber process or Haber-Bosch process is the primary industrial method used to make ammonia or fix nitrogen. The Haber process reacts nitrogen and hydrogen gas to form ammonia: N2   3 H2  Ã¢â€ â€™ 2 NH3  Ã‚  (ΔH −92.4 kJ ·mol−1) History of the Haber Process Fritz Haber, a German chemist, and Robert Le Rossignol, a British chemist,  demonstrated the first ammonia synthesis process in 1909. They formed ammonia drop by drop from pressurized air.  However, the technology did not exist to extend the pressure required in this tabletop apparatus to commercial production. Carl  Bosch, an engineer at BASF, resolved the engineering problems associated with industrial ammonia production.  BASFs German Oppau  plant commenced ammonia production in 1913. How the Haber-Bosch Process Works Habers original process made ammonia from air. The industrial Haber-Bosch process mixes nitrogen gas and hydrogen gas in a pressure vessel that contains a special catalyst to speed the reaction. From a thermodynamic standpoint, the reaction between nitrogen and hydrogen favors the product at room temperature and pressure, but the reaction does not generate much ammonia. The reaction is exothermic; at increased temperature and atmospheric pressure, the equilibrium quickly switches to the other direction. The catalyst and increased pressure are the scientific magic behind the process. Boschs original catalyst was osmium, but BASF quickly settled upon a less-expensive iron-based catalyst which is still in use today. Some modern processes employ a ruthenium catalyst, which is more active than the iron catalyst. Although Bosch originally electrolyzed water to obtain hydrogen, the modern version of the process uses natural gas to obtain methane, which is processed to get hydrogen gas. It is estimated that 3-5 percent of the worlds natural gas production goes toward the Haber process. The gases pass over the catalyst bed  multiple times since conversion to ammonia is only around 15 percent each time. By the end of the process, about 97 percent conversion of nitrogen and hydrogen to ammonia is achieved. Importance of the Haber Process Some people consider the Haber process to be the most important invention of the past 200 years! The primary reason the Haber process is important is because ammonia is used as a plant fertilizer, enabling farmers to grow enough crops to support an ever-increasing world population. The Haber process supplies  500 million tons (453 billion kilograms) of nitrogen-based fertilizer annually, which is estimated to support food for a third of the people on Earth. There are negative associations with the Haber process, too. In World War I, the ammonia was used to produce nitric acid to manufacture  munitions. Some argue the population explosion, for better or worse, would not have happened without the increased food available because of the fertilizer. Also, the release of nitrogen compounds has had a negative environmental impact. References Enriching the Earth: Fritz Haber, Carl Bosch, and the Transformation of World Food Production,  Vaclav Smil  (2001)  ISBN 0-262-19449-X. US Environmental Protection Agency: Human Alteration of the Global Nitrogen Cycle: Causes and Consequences by Peter M. Vitousek, Chair, John Aber, Robert W. Howarth, Gene E. Likens, Pamela A. Matson, David W. Schindler, William H. Schlesinger, and G. David Tilman Fritz Haber Biography, Nobel e-Museum, retrieved October 4, 2013.

Negotations for a home Research Paper Example | Topics and Well Written Essays - 2500 words

Negotations for a home - Research Paper Example Different criticisms have emerged on different participants in the allowing of such risky trading, but a nearly unanimous indictment of the authorities and commercial interests raises concerns on the safety of the industry into the future. These historic factors alongside other economic considerations that the majority of Americans continue to experience in the housing sector expose home ownership negotiations to a unique and challenging setting. According to economic times in the US and around the world today, households increasingly find it difficult to support capital expenditure that was the case slightly before the mortgage-precipitated volatility. Levels of employment continue to hit record month-to-month lows since the origin of economic crisis. Disposable income among the young generations in need of housing seems to fluctuate with the developments in the market and economic performance figures. Austerity measures embarked by the government illustrate the levels of economic volatility, which raises fears of the future of the economy and the implications that huge expenditures would have on economic stability at the household level. The low rate of economic recovery makes it unpredictable for jobholders to estimate how long they can remain in a job. Fears of mass layoffs within the austerity provisions therefore make it difficult for house buyers to make the correct timing when they are most stable in such expenditure . World economy performance as analyzed by observers still remain unpredictable, with reliable data sighting further recovery difficulty in the months ahead (Hirshleifer and Siew, 2009). With the developments of the economic struggles in Europe, world economy remains an issue of consideration by important expenditure decisions. When such domestic and international economic profiles indicate troublesome business environment, it implies that the real estate and the housing