Primates Essays - Lemurs, Capuchin Monkeys, Primate, Prosimian

Primates Since the beginning of time, man has evolved through primate evolution. Each primate has acquired different characteristics over a period of millions of years. The ecosystem has experienced an enormous change in this phase. Most major changes have occurred due to the phenomenon of continental drift. Other such factors are deforestation, natural calamities and, more recently, global warming. These changes have caused primates to become less arboreal and more and more terrestrial. In order to survive the pressures of natural selection, terrestrial life and other factors primates have developed more upright locomotion, changes in body configuration, increase in size and loss of hair. Over a period of millions of years, the planet has gone through a number of changes. To adjust to these changes the residents of this planet have also had to adapt. For the time span encompassing vertebrate evolution, there are three eras: the Paleozoic, the Mesozoic and the Cenozoic. The highly successful mammalian adaptive radiation is almost entirely within the most recent era of geological history, the Cenozoic. There are seven epochs in the Cenozoic - Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene and Holocene. In Paleocene (65 m.y.a.), the Lemuroids were the group of primates that existed. The Ruffed Lemur originated in the tropical rainforests of Madagascar. They ate mostly fruits, flowers, and leaves. Lemurs feature a somewhat elongated snout with a slight overlap on their eyes. They are large in size and are adapted to the ground. That ahs made them slower and thus they find it to harder to escape from their predators. They have gaps between their teeth and are extremely loud because of their strong vocal cords. They have muzzled faces, which are pointed with whiskers, and wet noses making them look less like humans. The Coquerels Sifaka are another example from this era. They originated from the forests of Northwest Madagascar. They eat mostly leaves, flowers and fruits. They are the second largest lemurs. Sifakas have long legs, which enable them to jump from tree to tree in an upright position. Another primate belonging to this era is the Galago. They are bushed babies varying from cat to rat size. The most striking features of the Galago are its huge eyes, long tail and large hind legs. Brain size is average and their vision and hearing are well adapted to nocturnal insect hunting. Their limbs enable them to make rapid leaps from branch to branch. They claim territory with there scent leaving smelly footprints. The Crowned Lemur, which is also an example of this era, is found in extreme Madagascar. They eat fruits, flowers and leaves. They stay mainly in trees and are active during the day and at dusk. The crowns on their heads are furry head caps. Females have a lighter crown then males do. The second epoch is Eocene (53 m.y.a.). A group of primates called the tarsiers came into existence in this era. They came from Southeast Asia in the tropical forests. Tarsiers usually leap onto their preys from lower branches and shrubs. They classify as prosimians and are related to lemurs and lorises. The similarities are pertaining to their body size, large ears and grooming claws. They have very long toes and fingers and their fingertips seem to be composed of a rubbery and sticky membrane. The Tarsiers also seem to have very large eyes, which dominates manner. Tarsiers seem to have a combination of prosimians and anthropoids due to the similarities from both. The tamarins are another group that existed during the Eocene era and probably one of the last. Tamarins are the most primitive of monkeys. Tamarins are found in the forests of Peru, Bolivia, and northwest Brazil. This is one of the species that is not much larger than a mouse and weighs only 2.5 oz (70 grams) to 2.2 lbs (1000 grams). They have claws instead of nails and usually give birth to twins. Their diet is composed of tree gum and fruit. Their locomotion is quadrupedal. Claws allow them to climb vertical tree trunks. They leap and cling as a form of travel. Tamarins are family oriented and the males are one of the few that participates in infant care. The third grade is the Oligocene

How to Write Contracts Essay Samples

How to Write Contracts Essay SamplesA contract essay sample is a type of essay that will help you learn more about writing legal documents. Theses samples are very helpful in completing your first few contracts essays. In order to write these samples, there are some basic things that you need to know.o Learn to analyze your writing process and find out what topics should be covered. That means, ask yourself why you have to write about this topic and what points should be covered in the document. This is the best way to figure out how to write a contract.o Even though contracts essays are becoming more popular nowadays, they are not being written as much as they used to be. This is because people do not believe that they have to write it for it to count. This means that the most common forms of these essays are online because people do not want to leave the comfort of their homes to go to school or work.o Write the contracts essay samples that you are going to write in a way that will show that you really have an interest in this topic. This means that you need to keep the language clear and to the point. By doing this, you will make sure that your essay is unique.o Since you have to do the contract writing for an employer, make sure that you are not afraid to be specific. When you do this, you will ensure that you are giving all the information that the employer needs. A professional writing a contract is supposed to do this.Contract essays should not just be about giving an explanation of what you have done for the company, but also it should include the explanation of why you did it. With that, it will make your employer trust you more.o Keep in mind that if you are going to go into writing a contract, it is very important that you are able to talk with the employer about it. The purpose of these contracts is to be able to discuss issues such as compensation, benefits, health care, transfer of job and so on. With that, you can also ask them what they expect f rom you.

High Tech Materials and Designs

High Tech Materials and Designs The industrial revolution ushered in an era of technology growth that has over the years changed according to human needs. Every period in time has had unique problems that people have used technology to solve. All fields that help the optimum functioning and survival of humanity on the planet have been undergoing technological evolutions that in many ways have made life better on earth. Medicine, education, construction, and communication have all been positively affected by technology[1].Advertising We will write a custom essay sample on High Tech Materials and Designs specifically for you for only $16.05 $11/page Learn More The 21st century has is facing serious challenges like no other time in the course of human development. However, the challenges that the world is facing right now come at the backdrop of increased pollution and environmental degradation, global terror, economic crises and humanity crises like war. One of the most dominant problems the world is facing now is environmental degradation and pollution. It is estimated that most world’s natural forests and a good number of animal species would have disappeared by the year 2050 if no action is taken. There is also the problems of increased cost of living, poverty and the threat of global economic collapse. These challenges have necessitated the need for development of designs using new materials that aim to conserve the environment, reduce costs for companies and governments while at the same time improving the standards of living for the planet’s eight billion people. Innovation therefore has become an unavoidable goal and objective in the pursuit of materials that whose design can help address the challenges highlighted above[2]. Current product development dynamics operate in a rapidly changing technological environment. Emphasis has been laid on product complexity or simplicity as well as life cycle. Innovative material concepts are growing rapidly in response to the challenges facing the humanity and to fulfill the new design opportunities that have been created. Material selection also takes into account the durability and reliability aspects that various product designs need. Some aspects including the environment, tenacity of the material, safety, and cost saving aspects, guide designers. The designs with the new improved materials aim at providing maximum benefits to the end users, promote sustainability as well as reducing dependence on the irreplaceable natural resources. Some of these materials are nano-structured materials, smart materials as well as spin off materials mainly used in the aerospace industry and renewable materials that are expected to provide an alternative to materials of fossil origin. This paper will focus on products that have been manufactured out of designs that are made from new materials. The industries that the high tech designed materials fall include aerospace, motor vehicle, building, and con struction.Advertising Looking for essay on art and design? Let's see if we can help you! Get your first paper with 15% OFF Learn More It’s important to note that the designs discussed here focus on the specific elements of products from the aerospace, auto and building and construction industries. It’s also important to note that the designs are specifically made from new materials or materials that have been modified to serve as new materials. Aerospace and aviation One of the industries that use some of the most advanced technologies today is the aerospace industry. These needs are mainly motivated by the challenges that the consumers are facing in the, market the need include building new aircraft for defense, climate and weather monitoring and space exploration. There is also the need to produce environmental friendly materials that will be used in the manufacture of equipment that produces minimal pollution. Innovation in the industry has l ed to the adoption of high tech ways that improve the current materials besides producing completely new ones. Materials commonly used in the aviation sector include refractory metals, molybdenum, tantalum, tungsten, and rhenium[3]. There are also ceramic materials as well as electronic chemicals and functional materials. These materials have been developed over time. They have undergone transformation and converted to new materials that the aviation industry uses with numerous advantages that address the 21st challenges. The new materials have been able to offer aviation equipment extended life with super alloys of tungsten, molybdenum, tantalum, niobium. In addition, aviation industries have produced new materials and technology using yttrium-stabilized zirconium that has led to efficient fuel consumption for both commercial and aircraft. Though space exploration started in the 1960’s a lot is still to be achieved and space exploration has acquired new importance especially as human beings look up to new places to exploit minerals and dump toxic wastes like nuclear. The discovery of ceramics and its use in outer space travels have proved to be a vital development in aviation and aerospace industry with new materials helping in heat insulation especially on the international space station. Additionally, Boeing the world’s leading plane manufacturer recently unveiled a passenger plane made exclusively out of carbon materials that they believe will make the aircraft lighter and efficient in fuel consumption.Advertising We will write a custom essay sample on High Tech Materials and Designs specifically for you for only $16.05 $11/page Learn More Auto Industry Making lightweight vehicles is a concept that manufacturers of motor vehicles have pursued since the discovery of the motor vehicle. Like in the aerospace industry, lightweight vehicles are efficient in their consumption of fuels, a concern that 21st century environme ntalists and business people share[4]. Changes for instance to the Fuel Economy in the US has forced automakers to research on new materials to design new light weight vehicles whose consumption of fuels is significantly reduced. Experts estimate that vehicles whose weight is reduced by 10% will have their consumption of fuels reduced by 3-7%. Additionally, lightweight vehicles manufactured with lightweight materials have sustained greenhouse gas emissions reductions over the lifecycle of the vehicle. Furthermore, lightweight vehicles have lower noise levels compared to old models. The materials used in the production of lightweight vehicles have been modified over time. Regular steel has been the main material in vehicle production for a long time. However, other materials like high-strength steel, aluminium, and composites have increasingly found use in lightweight vehicle manufacturing especially the 21st century. In the 21st century, magnesium and composites have found greater u se in vehicle manufacturing in the pursuit of lightweight vehicles. Nowadays composites especially carbon fibres make up 50% of the total vehicle volumes. The current vehicle designs involving composites are for cosmetic purposes. Nevertheless, like in the aerospace industry, car-manufacturing companies like BMW and Daimler have started joint ventures aimed at increasing the use of composite materials in structural construction of cars[5]. Already the new MBW Megacity relies heavily on carbon fibres components for structural elements. According to BMW and Daimler, the new partnership on new vehicle manufacturing materials aims to introduce carbon fibre vehicles into the market to address the challenges presented by the existing models. Additionally, industry players are emphasizing on the development of multilateral designs that will help in the production of optimal lightweight vehicle designs.Advertising Looking for essay on art and design? Let's see if we can help you! Get your first paper with 15% OFF Learn More Construction industry Sustainability is the most talked about and widely held notion that guides human endeavors in the world today. Furthermore, sustainability has environmental, social, and economic dimensions that affect all human life aspects on the planet. The construction industry besides the ones discussed above bears the greatest responsibility in environmental degradation[6]. The choice of materials used in the industry determines the effects the environment bears and if they are friendly or not. The idea behind improving materials used in the construction industry is to improve the efficiency of buildings and improving their capability in recycling and reusability. Many of the buildings that have come up in the past have been refurbished or decommissioned. Construction engineers tend to consider these building a great source of reusable materials that can be salvaged through harvesting. Salvaged materials have become part of the designs of buildings in the 21st century. Th e use of salvaged materials according to environmentalists is one of the most effective ways of conserving natural resources that have widespread economic benefits. Architects and construction engineers are nowadays emphasizing the designing of buildings that facilitate this phenomenon, which provides responsible environmental building designs in the industry. Building designs and construction is now focused on deconstruction rather than demolition. Salvaged material have become so important in the industry that its expected that if the trend catches up with many mainstream building firms, the planet will be saved of millions of hectares of forests by the year 2050. Many buildings have been designed using salvaged materials especially in Canada where forest conservation has given impetus. In the city of Vancouver for instance, the Vancouver Materials Testing Lab and the C.K. Choi and Liu Centre buildings serve to demonstrate the success that is designing buildings with salvaged mate rials. The materials used in the lab were salvaged from demolished warehouse buildings in the city. The main aim of this project was to demonstrate that salvaged materials could be used to achieve multiple environmental. Custom components of the building are made from fabricated materials salvaged from the demolished buildings. Additionally, glazing material used in the building is made from salvaged glass. In this particular project, it’s estimated that the savings that have been made through the use of salvaged materials amount to over $50, 000. That is the monetary side of the savings. When environmental benefits are incorporated, the advantages are even more. However, there needs to be more involvement of technology in the new material designs for benefits to be widely felt. Conclusion There are numerous designs of products and other works that have been achieved by the use of materials specifically adapted to 21st century problems. The above three industries’ prod ucts form some of the needy areas where new designs with new materials are needed. The challenges that face people in this century show little signs of abating despite the technological progress made. Designs using new materials will form one of the most basic approaches to alleviating these challenges. When combined with other cost cutting factors, the new designs using new materials will go along way in helping the long-term environmental sustainability of the planet as well as economic growth. References Ashley, S. Shedding pounds on a magnesium diet. Automotive Engineering International. (2010). pp. 34-36. Brooke, L. A Featherweight Future. Automotive Engineering International. (2009). pp. 24-26. Ichikawa, K. Functionally graded materials in the 21st century: a workshop on trends and Forecasts, Springer. (2002). 56-60. Inns, T. Designing for the 21st Century: Interdisciplinary Methods and Findings:Nd Volume 2 – P 181 Trilling, B. Et al. 21st Century Skills: Learning for L ife in Our Times: Volume 1. (2009). Pp 150-187. Footnotes Ichikawa, K. Functionally graded materials in the 21st century: a workshop on trends and Forecasts, Springer. (2002). pp. 56-60. Trilling, B. Et al. 21st Century Skills: Learning for Life in Our Times: Volume 1. (2009). Pp 150-187. Inns, T. Designing for the 21st Century: Interdisciplinary Methods and Findings: Volume 2 – P 181 Ashley, S. Shedding pounds on a magnesium diet. Automotive Engineering International. (2010), pp. 34-36. Brooke, L. A Featherweight Future. Automotive Engineering International. (2009). pp. 24-26. Ichikawa, K. Functionally graded materials in the 21st century: a workshop on trends and Forecasts, Springer. (2002). 56-60.

8 Bad Habits Bosses Hate the Most

8 Bad Habits Bosses Hate the Most It’s easy to get into bad patterns. But the good news is, it’s possible to break out of them! Whether you’re new to the workforce or you just want to make sure you’ve got your ducks in a row, it never hurts to think through the habits bosses find most annoying or repellent and make sure you’re not guilty of any of these professional faux pas. 1. Too Much/Too Little InitiativeIt’s important to show initiative. You should never be sitting around at your desk idly waiting for someone to tell you what to do. Show you love your job by finding productive and helpful things to do! But, on the other hand, don’t overdue it. There’s going the extra mile and then there’s going overboard. Aim for enthusiastic and thorough, not inefficient and excessive.2. Making ExcusesFirst of all, try not to do anything that would require an excuse in the first place. Get your work done. Get to work on time. And if you can’t get there in the time you have, don’t try to pawn off the responsibility. Just fix it. Stay honest and take responsibility for your part in everything. Okay, so maybe you did have a flat tire. Resist the temptation to embellish or to elicit sympathy. Just get back to work.3. WhiningThis includes moaning, moping, and complaining. In today’s economic climate, you’re lucky to have a job. Everybody hates staying late and having to sacrifice family time for work functions- even your boss. You’re all in it together. So save the grumbling and try to find ways to make it work instead.4. Asking Too Many QuestionsIt’s okay- good even- to ask questions when you need something clarified. It’s another thing entirely to ask redundant questions, or questions you could have found answers to on your own. If you can’t keep up intellectually, your boss will notice. Don’t hassle your boss or waste her time.5. Sloppy EmailsJust because some of your coworkers are e xtremely casual in their emailing habits doesn’t mean you should be too. Make sure to use complete sentences and to proofread. And for the love of all things holy, don’t reply all every time. Save that move for when it’s absolutely necessary.6. Taking AdvantageYour boss gives you a little leeway about clock-in times or coffee breaks- don’t take advantage of this and abuse the privilege. Your boss is super informal- don’t take advantage of this and become disrespectful. If your boss gives you an inch, be grateful. Don’t try to squeak out a foot, or worse, a mile.7. NegativityEspecially if your negativity means you badmouth the company- a fireable offense! But the same goes for being super rigid about what your job parameters are. Or being the one who’s always contrary and always saying no and shooting down others’ ideas.8. PolitickingTry not to get caught up in the politics and drama of office controversies. And definitely absta in from gossip. Nobody likes a coworker who is constantly pushing for better position and maneuvering behind their colleagues’ backs.

Economics D319B1 Essay Example | Topics and Well Written Essays - 1500 words

Economics D319B1 - Essay Example There are a great number of studies on wage rates and their distribution among workers with certain social and/or demographic characteristics. This essay proposes a theoretical framework and provides an analysis which predominantly complies with the existing literature. The author investigates the reasons behind the wage rates in the manufacturing sector in order to provide a forecast for the next decade. Today's picture of wage-rates in the manufacturing sector is determined by foreign markets' competition and the increased complexity of the jobs, which are moving away form the usual routine. Over the last few decades, the demand for workers in the manufacturing sector has increased. Employees with a high school diploma or less now face an increasingly sophisticated market in which new basic, physical and mechanical skills are required. The nature of low-skilled workers' jobs has changed due to the changes in labor market institutions. New technologies changed workplace organization and new types of goods and services were introduced. This led to unionization and improved organizational structure of the manufacturing industry. Topel (1993) defines several wage-rates determinants: immigration, education, inequality and female labor force participation, changes in product demand, international trade, and human capital investment. A study of Tachibanaki (1975), which covers twelve years (1958-1970), pays special attention to the influence of certain factors for wage-rate differentials. Tachibanaki's (1975) research uses major variables like sex (male or female), occupation, size of the firm, experience of the workers, age, working hours, bonuses, special payments. Tachibanaki (1975) agrees that the principal wage-rate differentials: differentials in education; racial and sexual discrimination; age; trade unions. The last two decades were marked by the constant growing globalization which has been proven to affect the demand on the manufacturing workers' market. This negative impact results in lower wages. According to Bogliacino (2009) there are two possible outcomes in terms of competition-limiting norms, depending on the time period (short run and medium run). Since this essay's goal is to provide a forecast for the future of wage-rates and their determinants, attention should be paid to the results on the mid-run, where "lower productivity growth is detrimental to wage growth" (Bogliacino, 2009). The question is, how does the process of globalization affect the bargaining power of workers in the manufacturing sector For the purposes of the essay SID (Sectoral Innovation Database) produced at the University of Urbino will be used. SID mixes data from several surveys regarding the economic performance of the EU countries. The unit of analysis comprises 21 industries belonging to manufacturing sector in the countries that comprise approx. 80 per cent of the European economy, namely France, Germany, Italy, Spain, Portugal, the Netherlands, United Kingdom, Poland and Norway in the period between 1994 and 2006 (Table No.1). Table No. 1 Manufacturing industries included in the SID Industries NACE Food, drinks and

Ethics in Book IV of Platos Republic Essay Example | Topics and Well Written Essays - 1000 words

Ethics in Book IV of Platos Republic - Essay Example Book IV of Plato’s Republic presents an excellent selection of ideas with respect to morality and behaviour of a human being with regard to his soul. Through Plato’s dialogues, the idea of justice has been presented very well as justice has been written as â€Å"A political arrangement in which each person plays the appropriate role.† Every man within society has been given a role or a part to play as per what he can do best. Each individual has a duty to serve society and he has been given the role of doing so in the best manner possible by way of the contribution that he can make. Doing good deeds is the moral birthright of each and every person residing within society. This is because each man is dependent on others around him and is able to live because of the relationships that he creates. However, there are certain actions that each man must be able to carry out like keeping a good and sound moral character. According to a number of philosophers, it has been pointed out that it does not only pay enough to have a moral or sound character on the outside; in fact it is very important to have a clean and pure soul. Many people tend to be ‘good’ on the outside and forget what is true to them within themselves. Certain terms like justice, morality and soundness are very important for people to exist in coherence and peace with each other within society. Sometimes, having an â€Å"outward behaviour† in order to portray a moral character is not plausible because it might turn people against an individual. In Plato’s Republic, justice has been spoken about in various aspects. ‘Civic courage’ is one term that has been talked about that the various auxiliaries possess. Justice has been depicted as a set of actions that must be carried out. â€Å"Mankind censure injustice fearing that they may be the victims of it, and not because they shrink from committing it.† Each person must be able to carry out actions that lead the rest of the city to believe that he is just and morally sound and is well equipped to be able to protect his kinsmen. Through the actions and thoughts of Socrates justice has further been depicted as parts of the soul and not just of outward cha racter that a man might possess. He has termed them as sources of desire namely, ‘a rational part of the soul lusting after truth, a spirited portion of the soul seeking honour and an appetitive part of the soul that searches for everything else after these two objects of desire have been met, like food, drink, shelter, sex and wealth in terms of financial and monetary terms. According to him all these three aspects must be fulfilled for a man to be truly satiated from within his soul and to help him understand that he has achieved all his desires. Socrates thus has been successful in identifying the kind of desires that each man wants to have within himself. However, the question still remains, is it enough for a man to fulfil such soul related desires or pleasures? Socrates claims that justice is actually not just a set of actions but an imprint of what the soul of a man is like, and if he is able to gather and satiate himself with respect to the above mentioned three desire s, then the same will reflect on his notions of justice on the outside and help others see the man as an honest and honourable man. Socrates finally mentions how it is healthy for a person’s soul to be just and how justice amounts to health. By attaining this stature, a man will never cheat, lie or steal for according to Socrates, he has been able to feel the love and affection of his own soul and has been able to comprehend the need to live a just lifestyle with respect to the society that he lives in. It thus pays to be just because it helps to keep a man healthy, and

Effectiveness of Oxygen Therapy for Cardiac Problems

Effectiveness of Oxygen Therapy for Cardiac Problems Oxygen therapy is the administration of oxygen at a higher concentration than that of ambientair. The main intention of this process is to either treat or prevent the symptoms and manifestations of hypoxia. Oxygen therapy decreasesthe work of breathing by increasing alveolar oxygen tension. As an essential part of clinical practice, oxygen therapy is widely used in cardiac care. Despite all thiswide uses of this therapy have been criticalin cardiac care. Studies have provedthat excessive use of oxygen, results incritical conditionsinthe areas that it is applied. This essay aims at examining the concentration required, different conditions, where it could be needed and the effects of use of high concentration oxygen for the client with chest pain. When there is airway obstruction as a result of cardiac effects such as asthma, pneumonia, breathing system of the client becomes complicated. This client can only breathewhen the oxygen level climbs above a setlevel. This will maintain functional ability and at the same time minimize the chest pain, which may have been caused by breathing problem. It is very important to note that there are several causes or condition that may arise to chest pain(FritzFaber, 2012). The different approachesproposed, suggestthat these statementsandsolutions do not conform withthe available evidence in the cardiac care. Also, inthe treatmentof a patient with cardiacproblems, the main issueto be consideredis the balance ofevidence for both the safety andefficiency of oxygen administrationin cardiac care. Arterial oxygen tension is one of thesigns todeterminant coronary artery tone. Slightincrementin arterial oxygen reducescoronary flow irrespective of priorsaturation(Atar, 2010). The human study of patientswith cardiac problems hyperoxia from concentrated oxygentherapy reducescoronary blood flow(Atar, 2010). Administering oxygen therapyto patients with myocardial infarction, oxygen therapy canreduce cardiac outputvolumes, and blood pressure and vascular resistance(Atar, 2010). Thereevidencein determiningsafety and efficiency ofoxygenadministration in cardiac care. The evidence supportsuseofoxygentherapyin minormyocardial infection resultsinincreaseddeath rates tothe patients. Research has approved that resuscitation from cardiac arrest; administration of high oxygenresults in hypoxia. Thisis directly associatedwith more deaths to patients incomparison to either normoxia or hypoxiaproblems. Continuoususe of oxygen therapy in cardiac careis harmful to the patient of cardiac problem and this approach is not the best. It is recommended that, the administration of oxygentherapyshould be at the level of 96% to keepstandardizedsaturation(BerstenSoni, 2009). Also, oxygen needbe administeredfordefinitecardiac cares, in which benefit of oxygen therapyoutweighs the risks it may impose to the patient. Healthcare professionals should take into account that the method, doseand delivery periodis clearly speltand patient’s reaction to oxygenadministration is thoroughly monitored (FritzFaber, 2012). Since oxygen is a drug, its administration requires a medical order. Each of the episodes of oxygen delivery should be ordered on the medicationchart either as on-going or one-off treatment. There are some conditionsthat should be examined before the nurse initiatesoxygen. First, the nurse should realize that the patient hasbreached expected normal parameter of oxygen saturation, also a medical review is required within thirty minutesand then at the time of the medical review, the right prescription of oxygen should be written. Before the selection of the delivery method, caregiversshould check at the individual flow meter for where to read the ball when setting the flow rate (Straface et al. , 2008). Some of the flow metersmay register greater than the maximum flow indicated in the meter in the case of the ball being set above the highest amount(Hunt, 1999). The nurse is required to use caution when adjusting the flow meter. All of the high concentration or delivery requires humidif ication. The selection ofthehumidification will depend on the oxygen delivery system in use. It should be noted that, air entrainment devices are not effective when it comes to delivering FiO2that is greater than 50%. Administration of high concentration of oxygen to clients with chest pain may worsen the pain, when breathing elevated pressure of oxygen is extended for a longer period(Myers et. al. , 2008). There has been a growing debate and concern on the administration of high oxygen concentration to those clients with chestpain(FreyShann, 2003). Traditionally, for over a decade, patients who complained of chest pain were instantly administered high flow of oxygen, this process initially started when medics realized that oxygen would ease myocardial ischaemia in patients with acute coronary syndrome (ACS). Also, highoxygen concentrationmay cause atelectasis. The alveolirelies onnitrogen topreservesurfactantcreationand alveolarpower. The high concentrationof oxygen, when administered may wash out nitrogen and leave the alveoli susceptible to a lack of gas asthegas diffuses to blood(Shekhar et. al. , 2010). It is important to note that; high oxygen concentration to thosepatients with cardiac problems, do not yield much advantage. Thispractice quickly became a routine in patients presenting with acute chestpain(Robyn and Coffee, 2012). Recently there has been a report indicating that harmful effects of high flow of oxygen in ACS patients where the patient may not be hypoxic. High flow of oxygen has previously been associated witha reductionof cardiac output, attribute to arterial vasoconstriction and also it increases systemic vascular resistance. Inmorerecent evidence, systematic review shows that the routine use of high concentration on chest painmay lead to greater infarct size increasing the risks of mortality. From a physiological perspective, treatment of ACS’ patientswith oxygen seems reasonable. For apatient suffering from ACS, there isalack of myocardial perfusionsand less oxygenation of the myocardium. In thiscontext, itseems logical to increase the oxygenation of the blood. Thistreatment is not well thought and can lead topatient harm, if not well monitored. The bottom line is that, the drug that is often usedcan cause harm if it is given without a good reason, when there isless saturationof oxygenin apatient’s blood, oxygen cannot help them with shortness of breath, and it may hurt them instead. The same idea holds truefor the neonates and any ofpatients with ongoing tissue injury from MI, stroke or trauma it is true that oxygen can be badwhen not wellmonitoredin administration (Myers et. Al. , 2008). The hemodynamic effect of high flow of oxygen in the myocardial was explored bygroups to improve on the cardiac care. The cardiovascular response to high concentration of oxygen was primarily attributed to arterial vasoconstriction; this has been demonstrated in retinal blood vessels. This method was also thought to be the reason behind the reduction in renal blood flowofcerebral blood flowwith oxygen therapy. Research has demonstrated that high concentrationof oxygen cannot increase itstransport inpatients with arterial oxygen saturation to a level of less than 90%. This is explainedbythe notionthat the reduction in cardiacoutput in excess leads toincreases in oxygen content. In patients with arterial oxygen saturation of less of 90%, this shows that oxygen administration increased oxygen transportation(CampbellSilver, 1998). This is due to both increased cardiac output and oxygen content. In therecent years, researchers have providedclearand direct evidence that the administration of high flow oxygen reduces coronaryartery blood flowfor the stable patient with ischaemic heart effect. This evidence wasprovided over a decade ago, and this has been confirmedthe method of high oxygen concentration may change, but the effects of oxygen on the cardiac care remainthe same. In conclusion, it is important to note that it is not clear whether routine administration of oxygen in patients’ with cardiac problemsin relation to chest pain has all the positive impacts on the outcome(Hunt, 1999). This systematic review challenges the status quo predicted by the international guidelines on the treatment of the chest pain caused by cardiac problems. The argument of reduced mortality due to administration of concentrated oxygen topatients with cardiac problem is disturbing. There is no need to administer a method of treatment on a patient in which the negative impacts outweighs the gain. The different approaches in tackling this major problemofchest paingives a clear evidence and explanationofthe conditions in which a patient is to be administered with concentrated oxygen. Before any treatment is done forpatientswith chest pain, caregiversshould try to understand the cause of the pain(CampbellSilver, 1998). For example, the pleuritic pain is triggeredby ches t movement and it is severe during coughing. Splinting the chest wall will help in reducing the discomfort of coughing. Cardiac care is involved with a lot of approaches that need to be looked at before treatment is undertaken. References Frey, B. , Shann, F. (2003). Oxygen administration in infants. Archives of Disease 2in Childhood Fetal and Neonatal Edition, 88, F84 F88. Bersten, A. Soni, N. (Eds). (2009). Ohs Intensive Care Manual 6th Edition. China: Butterworth Heinemann Elsevier Campbell, E. ; Baker, D. , Crites-Silver, P. (1998) Subjective Effects of Humidification of oxygen for delivery by nasal cannula ChestVol 93: 2 289 – 293 Shekhar, R. , N. Garg, A. Chockalingam, A. Tharakan, and A. Senthilkumar. (2010)A Young Adult With Atypical Chest Pain. Chest138. 4 MeetingAbstracts: 95A-95A. Print Beyar, R. (2009)Acute Cardiac Care-From Symptoms to Diagnosis and to Interventions. Acute cardiac care11. 3: 129-130. Print. Clark, R. 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