Should Animals be Used in Medical Research free essay sample

Animal research has contributed to 70 per cent of Nobel prizes for physiology or medicine. Without it, medically we might have been stuck in the Dark Ages. Animals should be used in medical research because it is still the best way of finding out what causes disease, and of knowing whether new treatments will be safe and effective.The study of animals is a vital part of the research process because it helped scientists to understand how different organs in healthy body works. Also, Animal bodies are similar to human bodies in a way that they perform  many vital functions such as breathing, digestion, movement, sight, hearing and reproduction. This helped scientists to understand if any of these organs not working well what possible treatments can be done to treat them. Due to this, advance scientific knowledge about human body was not possible without using animal for medical research.Animals are used as a model to study disease. We will write a custom essay sample on Should Animals be Used in Medical Research? or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Human and animals share hundreds of illnesses. Consequently, animals can act as models for the study of human illness. For example,  Dogs suffer from cancer, diabetes, cataracts, ulcers and bleeding disorders such as haemophilia, which make them natural candidates for research into these disorders. Cats suffer from some of the same visual impairments as humans. From such models we learn how disease affects the body, how the immune system responds, who will be affected, and more.Many Diseases have been cured or being treated today after doing lot of research on animals. Antibiotics, insulin, vaccines for polio and cervical cancer, organ transplantation, HIV treatments, heart-bypass surgery are some of the examples. we should be proud of our scientists; whose work is a hope to those suffering from incurable disorders. It is not only drugs and vaccines. Two weeks ago, researchers in Seattle announced that they had used an electronic brain implant to enable a monkey to move its paralysed limbs, a discovery with the potential to allow severely disabled people to regain movement.In Conclusion, no one will be happy to use animals if there is no need. It gives no one any pleasure. It is expensive, time consuming, performed under certain regulations. Yet it is best way to find what causes diseases, and what treatments will be safe and effective.

Vacuole essays

Vacuole essays Cells are the basic building blocks of all living things. All cells are small 'sacks' composed mostly of water. There are millions of different types of cells, but they are divided into two main groups. The first group, Prokaryotes, is made up of very small cells that have no membrane around their nucleus and no organelles with membranes. Prokaryotes include bacteria and are the most common type of cell. The second group of cells is called Eukaryotes. There are many different types of Eukaryotes, but all types share some characteristics. The basic eukaryotic cell has a cell membrane which is also known as a plasma membrane. It has a nucleus, cytoplasm, a cytoskeleton, and membrane-covered organelles. The organelles inside a cell have special jobs that let the cell function like it is supposed to. Each type of organelle has its own individual shape and size. The number of organelles that a specific cell contains depends on what function the cell performs. An example of this would be a cell that uses up a lot of energy would have many mitochondria. Some cells have organelles that other cells do not have. An example of this is the chloroplast in the plant cell. Animal cells do not have chloroplast. Some organelles are very different in plant and animal cells. An example of this is the vacuole. The name vacuole comes form the Latin word vacuus which means empty. The vacuole is a space within a cell that is empty of cytoplasm. Vacuoles come in all different sizes from submicroscopic to almost as big as the whole cell. Vacuoles are sort of like storage bubbles in the cytoplasm in a cell. They are membrane-bound sacs with important jobs like storage, ingestion, digestion, excretion, and expulsion of excess water. The membrane around the vacuole is called the tonoplast. The tonoplast is pretty incredible because it can surround a small amount of fluid and then, after a short amount of time of taking in water, it can stretch to become an ...

Species Essay Example | Topics and Well Written Essays - 750 words

Species - Essay Example The US alone estimate that invasive species cost its economy approximately $138 billion per year (Pimentel, Lach, Zuniga & Morrison, 1999). The introduction of this non-native species has proved to have dire consequences to the environments and ecosystems. One invasive species that has had severe costs to host nations is Bufflegrass. As an invasive species it has now become naturalized in the Americas, Australia, Hawaii and Mexico to name a few. Bufflegrass thrives in low rainfall a condition which makes it the perfect species to introduce to arid countries and was first introduced in the US and Mexico to improve forage for cattle, Arizona and the Sonaran desert were the ideal ecosystems for the grass to grow. Bufflegrass is drought resistant so thrived in its native countries including Africa. The grass will withstand heavy grazing and so was introduced for this purpose so the conversion of forest, homogenous grassland and savanna to pasture for grazing created the ideal environment for this hardy grass to grow. However the problem lies in that this invasive grass has spread from cultivated areas to natural ecosystems at an alarming rate as it will grow in all soil types and including sandy and stony soils. Bufflegrass grows densely and so crowds out native plants of similar size and due to its ability to resist drought will remain dense even in dry years. It attacks native plants by its ability to win competition for natural resources such as water, space and soil nutrients so prevents homogenous plants from maturing and germinating and secondly it is highly flammable but resistant to fire, once a grass fire has occurred it is not unusual that only the Bufflegrass grows back. The Sonaran Desert evolved without fire as an ecological factor and most of its plants cannot tolerate it. The Bufflegrass populations in Saguaro National Park have quadrupled in size between 2002 and 2006 despite the outbreaks of several vastly spread fires (Bean & Betancourt, 2006). The economic factor is that with the increased risk of fires utility infrastructures are threatened, property may decrease in value as areas become known for fire hazards, insurance rates rise not to mention the cost to governments in having to find means of managing the invasive grass. There is also the cost of life involved, in November 2005 a man was burned to death in a Bufflegrass fire in Arizona Bibliography Bean, Travis M. & Betancourt Julio L. (2006) Bufflegrass in theS onoran Desert: Can we prevent the unhinging of a unique American ecosystem The Plant Press THE ARIZONA NATIVE PLANT SOCIETY VOLUME 30, NUMBER 1 (Retrieved on 18th November 2008) http://aznps.org/PDFs/PlantPress/PP30.1.pdf Pimentel, D, Lach, L, Zuniga R, & Morrison, D. (1999) Environmental and Economic Costs associated with Non-Indigenous Species in the United States College of Agriculture and Life Sciences, Cornell University, Ithaca

The Economic Effects of Immigration Essay Example | Topics and Well Written Essays - 2250 words

The Economic Effects of Immigration - Essay Example For example, LPRs may live and work permanently anywhere in the United States, own property, and attend public schools, colleges, and universities. They may also join certain branches of the Armed Forces, and apply to become U.S. citizens if they meet certain eligibility requirements (Monger & Rytina, 2009). It is due to the number of benefits associated with the idea of becoming legal permanent residents that in 2008, a total of 1,107,126 persons became LPRs of the United States (see Table 1 and Figure 1). The majority of new LPRs (58 percent) already lived in the United States when they were granted lawful permanent residence. Nearly 65 percent were granted permanent residence based on a family relationship with a U.S. citizen or legal permanent resident of the United States. The leading countries of birth of new LPRs were Mexico (17 percent), China (7 percent), and India (6 percent) (Monger & Rytina, 2009). This graph makes it pretty clear that LPR flow to America has always been moving up and down but a considerable number of people have already attained the status of LPR in this country, making it one of the most favorite countries for immigration. Following figures will also give you an idea about this particular fact. This table shows a 5% increase in the total number of immigrants from 2007 to 2008. But, it also shows a greater increase (8%) in the number of newly entered legal immigrant as compared to those with change of status (3%). This is a considerable amount of people coming to US and a further increase in these numbers is expected. Actually, people migrate to other countries because of a plethora of reasons. Generally though, people do so to raise their financial status and that's the reason why most people come to America from certain Asian and African countries. Since America and UK are the countries where people can find better job opportunities with enhanced security, they prefer leaving their homeland. But, there can also be some other motives for immigration. For instance, during 1890-1924, the reason for Jews immigrants to come to America was the religious freedom, Asians and Italians were in search of work and Russian wanted to escape persecution. But, it is a fact that the increase in number of immigrants has a great impact on the economies of these so-called "immigrant friendly" countries. Obviously, it is not easy for a country to accommodate and provide all essential facilities to millions of people who actually don't belong to that country. This essay is all about delving more into the details pert aining to the economic effects of immigration on all those countries. Economic Effects of Immigration: As mentioned, America has always been known as a nation of immigrants but it is true that the nation has faced various types of problems and negative impacts due to the increase in the number of immigrants coming from Europe, Asia and Latin America. Immigration can create some sort of an impact on different economical aspects but its impact on labour market is more crucial. The increase in the number of immigrant has power to influence the labour market but the impact can be different in different areas and states. It is so because these immigrants are not evenly distributed in all part of America. Hence a different kind of influence can be seen on local and regional labour markets. In 2003,

Ethics Essay Example | Topics and Well Written Essays - 750 words - 25

Ethics - Essay Example The corollary to this is, of course, that if a woman chooses to deny her fetus the sustenance it needs to thrive, then she has a right to deny it that, and therefore a right to decide on an abortion. Markowitz wishes to divert from these issues, not because of the strength or weakness of their positions, but because as a true feminist the issue should relate to the woman as woman. It will be noted that the personality of the fetus and the right of a person over her (or his) own body is not related in anyway to a woman’s gender. This is not, therefore, a feminist issue but a morality issue like any other. The way Markowitz sees it, women are, as a class, systematically oppressed by the male-dominated society (this is known as the â€Å"feminist proviso’), a cornerstone principle of all feminist stands. Together with this, Markowitz espouses another principle, that of impermissible sacrifice. She said that it is the right of an oppressed or dominated class to refuse to sacrifice itself for the sake of the dominant class. The reason for this is that this practice tends to propagate the oppression and causes greater injustice to the oppressed class. A quotation from t he selection â€Å"A Feminist Defense of Abortion† by Sally Markowitz explicitly expresses the impermissible sacrifice principle as follows: â€Å"When one social group in a society is systematically oppressed by another, it is impermissible to require the oppressed group to make sacrifices that will exacerbate or perpetuate this oppression.† Taking this one step further, Markowitz views conception and childbirth as a sacrifice by women in order to serve the purposes of men – to produce him heirs or issue, to give him children to carry on his name and fill his household. In the Western cultural context, women are seen as being forced by men to bear the latter children. To Markowitz, this is an impermissible

The Strategies To Maintain Building Efficiently Construction Essay

The Strategies To Maintain Building Efficiently Construction Essay Introduction Building maintenance management has always been seen as the Cinderella activity in the construction industry where we shall be continuously done the maintenance work. The maintenance work has always been seen and carried out by the architects, surveyors, engineers or facilities managers in term of function or discipline (Allen, 1993). The maintenance has been required starting from the construction work at the first stage, where the significance of maintenance was not recognized because most early structures were massive, overdesigned, made from natural materials, in an unpolluted atmosphere and wore out very slowly (Allen, 1993). When the maintenance was required, the individual owner was carried out and the maintenance was executed but in term of management is not properly done. The maintenance management was necessary when the advent of landlord-tenant relationships and together with the growth and spread of the population (Allen, 1993). Normally, property owners always endeavor to keep their building maintenance expenditure in the minimum cost but the building must be in good condition and well-maintained (Seeley, 1976). The building maintenance is highly desired but hardly achievable to produce where the maintenance-free, although many work can be done during design stage to minimize the cost of maintenance work. According to the Building Maintenance by Seeley, the building deteriorates at a greater or lesser rate depending on the materials and methods of construction, environments and the use of the building (Seeley, 1976). 2.0 Definition of efficiency and building maintenance The word of efficiency can be defined as an important quality because all ideas are scarce such as time, money and raw material, so they try to keep them while maintaining an acceptable level of output or a general production level. The efficiency would be reducing the amount of waste inputs (n.n. 2012). There many definition of maintenance can be defined. British Standard (BS 3811: 1964) defines maintenance as work undertaken to keep or reinstate every facility that is every part of a site, building and contents to an acceptable standard (British Standards Institution 1964) . Besides that, maintenance can be defined as the improvement of any facilities including every part of a building, services and surrounding according to an adequate standard in order to sustain the value of building facility (Allen, 1993). 3.0 Types of maintenance According to British Standard Institution, maintenance divided into planned and unplanned maintenance where there have preventive and corrective in planned maintenance and unplanned same as an ad-hoc basis because uses when necessary. Planned preventive maintenance is working direct in order to prevent the failure of facility where the maintenance done within the expected life of facility to ensure the facility can be operation continuously (Seeley, 1976) . Planned corrective maintenance where the work performs in order to restore any facility to operation or acceptable standard and unplanned maintenance where we were unpredicted the unforeseen breakdowns or damage occurred by external causes (Seeley, 1976). 4.0 Strategies to maintain building efficiently Building maintenance is an important thing where to preserve the building in its initial stage of the construction. Furthermore, the execution of building maintenance allows the building to operate effectively. The building shall be maintain in order to make sure the building can be retain investment value, an acceptable condition and required standard, looking good appearance of building, generate income for building owner and conserve historical and architectural values of building (Ali et al. 2010). There are some strategies to ensuring the efficiency in building maintenance practices which is; Work schedule Computerized maintenance management system (CMMS) Involvement of Building Maintenance Profession during Design Stage Outsourcing 4.1 Work Schedule In future, more people are demanding in term of building care where they are wants their building facility always in good condition and well-maintain. For more efficiency in building maintenance, any property management shall be having work schedule for contractor to maintain each of equipment or building facility. In the building maintenance management process, every organization has their objective in order to success in maintenance work and they were determines the effectiveness of implementation in term of maintenance plans, schedules, controls and improvements (MÃ ¡rquez et al. 2009) Besides that, any organization also can produced checklist for building maintenance such as checklist for air-conditioner, mechanical and electrical, water supply and others. So, when there have several checklists at the particular area, the maintenance workers are easy to do their job where they were just going to the particular area and check any equipment through the checklist whether there have equipment breakdown or not. With have a checklist, the maintenance workers will know when the next checking for that building to do maintenance. Checklist schedule can be done in daily, weekly and monthly based on type of maintenance facility or equipment. It will be more efficiently to the maintenance workers to do their job. 4.2 Computerized Maintenance Management System (CMMS) Next, strategies to maintain the building efficiently is using the computerized maintenance management system (CMMS) where this system is software that contains the information about companys maintenance operations. This system is useful to the company because it will help their maintenance worker to handle the maintenance job become more efficiently (Herbert W. Stanford III, 2010). Other than that, CMMS also can help them to saving the data about maintenance operations where the maintenance worker will alert on the schedule for their inspection on the building maintenance area such as mechanical and electrical equipment, air conditioner, water supply and others. They are also will know when there have some equipment were breakdown or who the maintenance worker was responsible for the job (Ruud, 2009). Normally, CMMS used by companies which have high standard for their maintenance work. In CMMS, there have some package offer included which are a work orders, preventive maintenance, asset management and inventory control. All programs will be easily for maintenance workers to do their job such as scheduling maintenance procedures, tracking relevant information, keeping track of preventive maintenance components and procedures, recording data about equipment, management of tools, materials and others (Herbert W. Stanford III, 2010). 4.3 Involvement of Building Maintenance Profession during Design Stage The design of building structures is an important thing because at initial stage of the construction, the building maintenance profession shall be involved in order to make sure the suitable building design to be designed by architect. The building maintenance profession is not only involved during the construction completed but they shall be involved before the construction start. So, they can consult with the architect to do the suitable design in term of long-term planning and a long-term maintenance on which are predicted by them (Allen, 1993). After the construction is completed, the building maintenance profession is easily to do their maintenance works because the architect are design the building structure according to their planning. When the design of structure is an efficiently, its required to be understands the way how to be used and maintained the building structure. 4.4 Outsourcing Any organizations in the world try looking for new approaches in outsourcing to maintain the building facility or equipment or develop competitive advantage (Campbell, 1995). By outsourcing a particular area of building maintenance to other organization, the in-house organization can maximize their return because their management will be more efficient. Outsourcing also will be an effective way in order to reduce costs, free-up capital and improve quality and service, but outsourcing cannot be seen as an automatic way to be success (Campbell, 1995). Outsourcing also known as contract maintenance where there have a survey done by FM Link, the contracting for unskilled or semi-skilled services such as landscape services and housekeeping was very high which is 65-75%, the use of outsourcing for preventative maintenance was much lower which is 50% or less and for public owners, public schools, universities and others the use preventive maintenance was below 20% (Herbert W. Stanford III, 2010). There are some benefits of outsourcing because these benefits are related to the quality of the products and services provided to the customers (Campbell, 1995). There are some benefits enjoy by organizations which are: Contractors will be performed a good services where they were might be has more specialized the equipment and allowed the contractor to provide a good quality and service at a lower price. When do the outsourcing, the organization may provide a greater flexibility because the outsourced organization are able to operate their maintenance works according to their own plan. The supplier will enjoy personnel depth and sophistication in technical knowledge in particular area and support more specialized proficiencies. When the outsourcing strategy in well-planned, the approaches which can deliver a competitive advantage by allowed company to focus its resources on their business. 5.0 Conclusion As a conclusion, to ensuring the efficiency in building maintenance practices, the approaches will be used in this building maintenance management is expected to reduce the building maintenance costs, to improve the health, safety and satisfaction by the users. All strategy or approaches in building maintenance are easily to the maintenance workers do their job and become more efficiently. When they are doing their maintenance works according to the schedule, then the works become more save the time, the equipment always in good condition, the checklists will be done by the maintenance workers and others. Other than that, the strategy will be used in building maintenance management to ensure the performance of the maintenance works is well-maintained. The maintenance works must be effective and the most important thing is efficient.

Battle of Gettysburg Essay -- History Civil War USA Historic Essays

Battle of Gettysburg This most famous and most important Civil War Battle occurred over three hot summer days, July 1 to July 3, 1863, around the small market town of Gettysburg, Pennsylvania. It began as a skirmish but by its end involved 160,000 Americans. Before the battle, major cities in the North such as Philadelphia, Baltimore and even Washington were under threat of attack from General Robert E. Lee's Confederate Army of Northern Virginia which had crossed the Potomac River and marched into Pennsylvania. The Union Army of the Potomac under its very new and untried commander, General George G. Meade, marched to intercept Lee. On Tuesday morning, June 30, an infantry brigade of Confederate soldiers searching for shoes headed toward Gettysburg (population 2,400). The Confederate commander looked through his field glasses and spotted a long column of Federal cavalry heading toward the town. He withdrew his brigade and informed his superior, Gen. Henry Heth, who in turn told his superior, A.P. Hill, he would go back the following morning and "get those shoes." Wednesday morning, July 1, two divisions of Confederates headed back to Gettysburg. They ran into Federal cavalry west of the town at Willoughby Run and the skirmish began. Events would quickly escalate. Lee rushed 25,000 men to the scene. The Union had less than 20,000. After much fierce fighting and heavy casualties on both sides, the Federals were pushed back through the town of Gettysburg and regrouped south of the town along the high ground near the cemetery. Lee ordered Confederate General R.S. Ewell to seize the high ground from the battle weary Federals "if practicable." Gen. Ewell hesitated to attack thereby giving the Union troops a chance to dig in along Cemetery Ridge and bring in reinforcements with artillery. By the time Lee realized Ewell had not attacked, the opportunity had vanished. Meade arrived at the scene and thought it was an ideal place to do battle with Lee's Army. Meade anticipated reinforcements totaling up to 100,000 men to arrive and strengthen his defensive position. Confederate General James Longstreet saw the Union position as nearly impregnable and told Lee it should be left alone. He argued that Lee's Army should instead move east between the Union Army and Washington and build a defensive position thus forcing the Federals to attack ... ...h. Confederate causalities in dead, wounded and missing were 28,000 out of 75,000. Union casualties were 23,000 out of 88,000. That night and into the next day, Saturday, July 4, Confederate wounded were loaded aboard wagons that began the journey back toward the South. Lee was forced to abandon his dead and begin a long slow withdrawal of his army back to Virginia. Union commander Meade, out of fatigue and caution, did not immediately pursue Lee, infuriating President Lincoln who wrote a bitter letter to Meade (never delivered) saying he missed a "golden opportunity" to end the war right there. On November 19, President Lincoln went to the battlefield to dedicate it as a military cemetery. The main orator, Edward Everett of Massachusetts, delivered a two hour formal address. The president then had his turn. He spoke in his high, penetrating voice and in a little over two minutes delivered the Gettysburg Address, surprising many in the audience by its shortness and leaving others quite unimpressed. Over time, however, the speech and its words - government of the People, by the People, for the People - have come to symbolize the definition of democracy itself.