Physiological Changes Of Aging Biology Essay

Physiological Changes Of Aging Biology Essay Aging does not give a good feeling to most human beings because of the diseases and problems associated with it. History has it that most individuals have always tried to stave off aging and death. The affluent often seek lamb cell injection in medical centers in search of youthfulness. Many people take mega doses of vitamin E all in the hope of attaining the fountain of youth. Aging is the continuous and irreversible decline in the efficiency of several physiological processes. It is considered to occur once the reproductive phase of life has passed (Lata, 2007). In actual fact, aging starts as a developmental process starts at conception. In recent times, aging has become a deeply rooted social issue with anti-aging therapies taking the center stage in the magazines, newspapers and the general media. The etiology of aging is important to be understood but it is more crucial to differentiate the normal physiological changes from the changes brought about by diseases. Individuals exp erience the physiological changes differently. Main Body Physiological changes arise with aging in all the human organ system. Progressive functional decline and the gradual deterioration of the physiological with increase in age include a decrease in productiveness and loss of viability. The aging person becomes vulnerable to diseases and become susceptible Cardio-vascular system The heart muscles especially on the left ventricle become weak. The heart valves degenerate and are calcificated. The artery walls cease to be elastic. This loss of elasticity is also known as arteriosclerosis. The cardiac output and baroreceptor sensitivity significantly decrease. The decrease in blood flow leads to reduction in stamina. The hepatic and renal functions are also decreased. The nourishment of the cells gradually becomes less. The blood pressure response to volume depletion, standing and heart blocks becomes impaired (Boss, 1981). Respiratory system The lung tissue and the airways become less elastic and the cilia activity is reduced. The uptake and exchange of oxygen is decreased. The muscles of the rib cage wear out thus reducing the ability of the person to breath deeply expel carbon dioxide or even cough. The perfusion/ventilation mismatch is a common occurrence and it results in reduced stamina with fatigue and shortness in breathing. Oral cavity Most aging individuals experience loss in bones and tissues around the mouth may be infected with diseases. As a result of infections, more than 50 percent of people who are above 60 years of age loose their teeth especially those who are not keen on the health of their mouth. These lead the individual to be choosy about the food they consume. The choice of food that is easy to chew lead to reduction in consumption of fruits and vegetables that are high in dietary fiber. Musculo-skeletal system There is generalized wear of all the muscles in the body accompanied by replacement of the muscle tissue by fat deposits. This has the effect of loss of some muscle strength and tone. More specific implication of this is significant reduction in the ability to breathe deeply. The gastro-intestinal activity is reduced and can lead to bladder incontinence or constipation. Calcium is lost and bones generally become less dense. This may result to osteoporosis and reduction in ability to bear weight. As a consequence, the chances of spontaneous fractures are increased. The vertebrae can calcify resulting in postural changes. Body joints also experience change. The degenerative inflammation of the joints, also know as arthritis, is a common persistent condition among the elderly. Gastrointestinal system As age increases, the stomach cellsà ¢Ã¢â€š ¬Ã¢â€ž ¢ ability to secrete digestive juice is reduced. The secretion of hydrochloric acid, saliva and digestive enzymes decreases. This has the effect of interference with digestion of protein. There is decrease of secretion of intrinsic factor which is crucial for absorption of vitamin B12. The changes may lead to impaired swallowing, gastrointestinal distress and one may experience delayed emptying of the stomach. The small intestine becomes less able to absorb some nutrients. There have been cases where the elderly suffer from cramps and even diarrhea after consuming dairy products containing lactose. This may be as a result of lack of lactase. Constipation may be experienced as a result of distorted gastrointestinal spontaneous movements, inactivity and weak muscle (webdietitian.com, 2010). Sexuality Sexual performance and desire may be a reality even with aging. However, the frequency may diminish. Changes that are experienced by women as they age include atrophy of the ovarian, uterine vaginal tissues with a significant decrease in vaginal fluid production resulting in dry vaginal mucosa. Women also experience menopause with diverse hormonal changes. Physiological changes in men include reduction in production of sperms and the prostate increase in size. The sperm count is reduced and the viability is reduced. There is decreased libido and ejaculation is delayed. For both men and women, more stimulation becomes a requirement for them to become aroused and even more time to achieve an orgasm. Menopause is one of the main indications of aging. It is among the changes that are apparent in relation to age-related changes. It occurs due to the disappearance of oocytes from the ovary. Most women after menopause experience hot flashes or vasomotor instability. Sensory changes In order to gather information, synthesis and internalize, senses play a central role. The ability to take part in social interactions is affected by the senses. With age, there occur changes in vision. At about forty to fifty years, the pupil starts to decrease in size. The response to light is decreased. As a result, the amount of illumination required by the aging person is increased as compared to a younger person. Focusing for such a person takes longer and there are significantly higher chances of nearsightedness. There occurs loss of accommodation which makes it hard to read. Reading from a close distance may become difficult, a condition also known as resbyopia. It can be corrected by putting on glasses with convex lenses. The lens of the eye may start thickening and yellowing. Once this happens, light is diffracted, the depth perception is decreased, sensitivity to glare is increased and it becomes hard to distinguish pastel colors. Change in hearing ability also occurs with age. The sensitivity to high frequency tones decrease. The ability to differentiate similar pitches decrease due to changes in the cochlear hair cells and bones of the inner ear. The other significant sensory change is in smell and taste. It is imperative to note that the two are interrelated and equally important. They are both crucial for eating and checking for hazards in the environment. They are useful for detecting spoilt food, fumes and smoke. After the age of eighty, the reduction in the number of taste buds leads to a decline in the ability to taste. Some elderly people experience a drastic decline in their ability to smell. This usually results from disease or blockage of the olfactory receptors in the upper sinus. After the age of twenty five every human being losses nerve cells. With time, this results in reduction in efficiency of nerve transmission which impact on coordination and response time. However, research has shown that these physiological and anatomical changes limitedly impair the actual intellectual functioning related to the process of aging (Lata, 2007). Intelligence is associated with a wide range of abilities that gives one the avenue to make sense of experiences. They include the ability to think conceptually, comprehend new information, and make rational decisions and verbal fluency amongst others. Some abilities such as the ability to think abstractly are biologically determined and are known as Fluid Intelligence. There are those intellectual abilities that reflect the skills and knowledge an individual has gained through life experiences. These abilities are known as Crystallized intelligence. Tests on intelligence have shown somehow poorer performance on by older person s on fluid intelligence. There are indications that there is little or no difference on tests of crystallized intelligence. Reduced efficiency of nerve transmission in the brain result in poor processing of information and loss of information during the transmission may be blamed for the poor performance in tests on older people (Magalhaes, 2008). Personality changes The best aspect of change that has been documented in regard to personality change due to aging is increased preoccupation with oneà ¢Ã¢â€š ¬Ã¢â€ž ¢s inner self. These include greater attention to individual feelings and attention to personal feelings and experiences and reduction in extraversion. Another aspect that has been observed is gender role identity. Men tend to be more nurturing, affiliation seeking and expressive as they advance in age. Women tend to be more achievement-oriented and instrumental. Conclusion Many of the interlinked physiological changes are as complex as the biological processes of the body. Even though there has been a progressively monumental research in aging but the middle ground on the theory of aging on one specific aspect is yet to be established. Physiological changes do not occur uniformly for all individuals but are jointly affected by genetic and environmental factors. This fact further heightens the difficulty of finding a universal theory regarding aging. Universal in this case means what the human race is involved in terms of the global-aging phenomenon. The temptation to regard many of the age-related so-called diseases as the end of normal physiological changes is high for most people. The distinction between the erosion in function of pathological and normal aging states should be unmistakably delineated. The diseases that arise in the elderly should be well separated from the signs of aging in order to give the right attention to the two different phenomena. Deep understanding of the normal physiological changes and those changes caused by diseases make it easy for the clinicians to diagnose and manage the elderly. The failure of a clinician to recognize the differences may lead to unnecessary clinical testing, misdiagnosis of the aging person and eventual mismanagement. The problems that are associated with ageing can be managed through use of glasses, intake of adequate vitamins, and consumption of green vegetables rich in antioxidants among other ways. Some people may have dramatic and rapid levels of decline yet others may have much less significant changes. Although aging is a genetically determined process, environmental factors often have an impact on the aging process. Some environments may accelerate aging while others may not interfere with the aging process.

Hiroshima Essay -- essays research papers

The most significant theme in John Hersey’s book â€Å"Hiroshima† are the long- term effects of war, confusion about what happened, long term mental and physical scars, short term mental and physical scars, and people being killed. The confusing things after the A-bomb was dropped on Hiroshima where that the city had been wiped out, all means of communication where gone, all the roads and street signes where wiped out, destroyed or blocked by collapsed buildings â€Å"†¦saw through the darkness that all the houses in her neighbourhood had collapsed.†1 People not knowing what had happened as there had been no siting of a plane before the bomb was dropped, not being sure if a bomb or a fire had caused all the damage â€Å"The Americans are dropping gasoline. They’re going to set fire to us!†, and not knowing what the site effects of the bomb would be on the people and land such as acid rain â€Å"The drops grew abnormally large.†2 The long-term mental and physical scars left on the people of Hiroshima would have been not knowing what happened to family members, and friends who where missing and still are missing to this day, â€Å"You’ve go to find him†3, and â€Å"†¦.search for him.†4 The physical scars left on the people of Hiroshima after the bombing are, organ damage, disease, accelerated aging, eye brows burnt off and skin damaged on faces and hands. People forgetting what Americans did to Japanese civilians, by dropping that awful thing, â€Å"He was slowing a bit. His memory, like the world’s was gettin...

Evolution of the Erp Systems Essay

American Production and Inventory Control Society (2001) defines ERP as an â€Å"accounting system† for â€Å"effective planning and controlling of all the resources needed to take, make, ship and account for customer orders in a manufacturing, distribution or service company†. ERP system creates values for the enterprises because successful implementation enhances the overall functions of the enterprise, reduces resource wastages, saves time and cuts down on total cost. By having a system which models after some of the best practices in the industry and adheres readily to the laws and regulations, these enterprises gain competitive advantages over their industry rivals. The purpose of this research paper provides discussion on how ERP systems evolve from the â€Å"ancient† Legacy systems, describes the features and structure of an ERP/ ERP II system and compares the top five ERP vendors’ most popular products. The last section concludes with the future outlook of ERP II systems. Legacy Systems Legacy systems are systems that â€Å"no longer support the current business objectives or are inhibiting future developments† (Kelly 2004). The â€Å"ancient† Legacy systems mentioned here refer to the obsolete I. T systems during or before the mid 20th Century. They functioned within a department (silos of information) to fulfill narrow and limited job processes. At that time, departmental heads and staff seldom communicated among themselves (stovepipes). This led to inefficient and inaccurate data duplications. (O’leary 2000). Evolution of the ERP Systems â€Å"Ancient† Legacy systems of the 1960s used the mainframe technology to automate their inventory control (IC) systems with IC software packages implemented and customized in-house to suit the functional business concepts of information silos and stovepipes. The programming languages were COBOL, FORTRAN and ALGOL (Rashid, Hossain & Patrick 2002; Pairat 2005; Monk and Wagner 2009). Back then, Bill of Material (BOM) calculated the inventory demands for all item parts required for product assemblies during manufacturing. By the 1970s, the manufacturing businesses were growing with more complexities. As BOM overlooked the planning process, Work Centre Routing existed as a production process planner. BOM, Routing, Inventory Management and the Master Production Schedule (MPS) combined to form an automated system called Manufacturing Resource Planning (MRP) for controlling and optimizing inventory level, production planning, sales forecasting and scheduling of the major items on the shop floor. Anderson 2001). MRP II evolved from MRP as a response to Total Quality Management (TQM) in the 1980s. By integrating MRP with the other management functions of the enterprise such as Engineering, Project Management, Logistics, Finance, Sales, Marketing and Human Resources, feedbacks for production decision making processes became more efficient and resource optimizations were realized (Anderson 2001). The advancements in Telecommunications devices, network architecture, Database Management System (DBMS), sophisticated software development and programming languages in UNIX and C paved the favourable way for an integrated information system (Monk and Wagner 2009). Economic recession in the late 1980s urged companies to shift their focus into cross functional business processes. In addition, Hammer and Champy (1993) envisioned an enterprise-wide integration system for a Business Process Reengineering (BPE). These factors prompted the I. T System Vendors to respond with a tightly knitted centralized ERP system (with a single database) which integrates all the functions of a world-wide organization to ensure operational excellence, automation of the internal system and the ability to handle multiple currencies and international languages (Subramoniam et al. 2009). Features and Structure of An ERP/ ERP II System Nowadays, the era for ERP II systems has â€Å"Extended ERP† by adding applications for external parties supplying the business transactions and market analysis to the core EPR modules. ERP system benefits medium enterprises in all industries instead of only the large organizations with applications such as Customer Relationship Management (CRM), Supply Chain Management (SCM), Knowledge Management (KM), Inventory Optimization the rest (Mallick 2011; Nicolescu et al. 2009). ERP system and ERP II system use either Two-tier or Three-tier Architecture. Two-tier client–server Architecture simplifies the number of disparate systems in an organization. An ERP solution runs on a server while several concurrent users run the same standardized template (equal server-load) in other locations of the other layer. End users work on the Presentation layer and Business layer. Access to the Database layer is restricted from their PCs. (Anderson 2001; Gill 2011; Howitz 2010). Whereas Three-tier Architecture separates the Client-Tier (Presentation layer) from its Application Server (Business logic layer) to minimize interaction between them.

Creation of the Roman Empire Essays

Creation of the Roman Empire Essays Creation of the Roman Empire Paper Creation of the Roman Empire Paper The contributions of the Roman heritage on the modern West cannot be overemphasized. Even from ancient times the Roman Republic, and later the Roman Empire, was regarded as a successful template for all of civilization. The Romans had a superb ability to organize and administer to the needs of their citizens and also developed a tremendous legal system that is fundamentally in use even today. In the early republic, social divisions determined the shape of politics. Political power was in the hands of the aristocracy – the patricians. They dominated the affairs of state, provided military leadership in time of war, and monopolized knowledge of law and legal procedure. The common people – the small farmers, artisans, and landless urban dwellers – had few of the patricians advantages. They did, however, have a voice in politics but were mostly overshadowed by the patricians. One of the greatest institutions of the republic was the formation of the Senate, a council of noble elders who advised the king. The creation of several assemblies through which laws and policy decisions were made provided the foundation for a structured government in Rome. In comparing historical Roman political bodies to that of the present day United States it is easy to understand the influence that Roman history had on the framers of our own constitution and system of government. The Roman senate retains its name and also its function. The Roman consuls relate to our countrys legislative assembly while a Roman praetor most closely resembles a judge or attorney. The Roman system of law was one of the earliest in history to enforce the belief that all men were created equal and are the basis of modern civil law. Roman law also established the precedent that the burden of proof weighed on the accuser, creating the belief that someone is innocent until proven guilty. It also stated that a person could not be punished for a thought but only an action.

Educating Rita †Scene I

Educating Rita – Scene I Free Online Research Papers Educating Rita is a play written by Willy Russell in Thatherite Britain in the early 1980’s, when the role of women was to earn a living for the family and produce children to carry on the family name. Rita is a young hairdresser working in Liverpool and she is about to embark on an educating journey of finding herself through the teaching of an Open University. Frank is a university lecturer and will be teaching Rita what she wants to know about literature and another world outside of her own. Russell has interpreted the character of Rita as a copy of himself. This is because he was also a hairdresser and went to a night school to do his O levels before he became a famous writer. When we first see Frank he is in his office and appears to be looking for a book on the shelf. The audience then realises that he is actually looking for a bottle of whisky that he has hidden behind a book. This is symbolic for that Frank is hiding his drinking problems behind his work and education. Another example of Frank hiding his problems away from others is that when he drinks the whisky from a mug. This is so people won’t see his problems and the contents of the mug. The first time in which Rita in introduced to the play is her first encounter of what it’s like in Frank’s world. She gets to Frank’s door but it appears that it is stuck. She struggles to enter but eventually she gets in. This problem with the door is symbolic for that Rita will find it very hard to get I to the way of living in an educated environment. This door is also symbolic the next time Rita goes to the University. This is because she brings some oil and tries fixing the faulty door. This shows her determination to get an education and how much she wants to learn. When Rita first enters Frank’s office she is amazed. She never sits down and goes straight to the window. Throughout the play whenever she is in the office she goes to the window. Looking down at the â€Å"real students† studying on the grass. This is what Rita dreams of being. A â€Å"real student†. Frank has a picture of a naked woman on the wall. This is one of the first things that Rita notices. She says, â€Å"It’s very erotic.† And Franks reply is just â€Å"Erm yes, I suppose it is-â€Å". This shows that Frank hasn’t looked at the painting in a very long time. He also seems to have lost all interest in art and women. Both Frank and Rita both have completely different ways of living. They also have very different accents. Rita’s is a strong Liverpudlien accent whilst Frank talks with Received Pronunciation. This is where he doesn’t have an accent. It could be said that he speaks the standard way. Frank also speaks in Standard English. This is where he says his words like they are written in the dictionary and everyone will understand what he means. Also Rita swears a lot. She doesn’t know how to act in different situations so she just acts the way she normally does at home. By swearing and using inappropriate taboo language. Examples of her bad language are â€Å"tits† â€Å"sod† and â€Å"fuckin’†. Examples of Rita’s accent interpreted in the writing of the play are â€Å"y’† which is meant to be you and â€Å"won’ I† which is meant to be won’t I. Frank and Rita sometimes get confused with each other on several occasions in the play. Some examples of this are when Frank is referring to the poet â€Å"Yeats† Rita thinks he is talking about â€Å"Yates’s† the wine lodge. This is probably the most important point in the play because it shows that Frank and Rita come from completely different ways of life. Rita speaks with a lot of dysphemism. This is where the language she uses is shocking and impolite. Examples of this are when she is talking about the woman on the painting she says â€Å"tits†. The euphemistic way of saying this could be breasts. Frank speaks with a lot of euphenism. This is the way of saying something in the polite terms. He does this when Rita is saying that she is stupid and not bright enough to be a real â€Å"student†. Instead of just agreeing with Rita, Frank says, â€Å"it’s supposed to embrace a more comprehensive studentship†. Now of course Rita wouldn’t understand what Frank had just said but it is a more polite way of agreeing with her. The main themes of Educating Rita are Self-discovery, change and escapism. Russell establishes the differences between Frank and Rita by typing Rita’s accent differently, by showing that Frank speaks all his words like they are spelt in the Dictionary and so on. Research Papers on Educating Rita - Scene IThe Effects of Illegal ImmigrationStandardized TestingInfluences of Socio-Economic Status of Married MalesTrailblazing by Eric AndersonAnalysis Of A Cosmetics AdvertisementHip-Hop is ArtRelationship between Media Coverage and Social andResearch Process Part One19 Century Society: A Deeply Divided EraNever Been Kicked Out of a Place This Nice

Reflaction Paper (Earth Science) Essay Example | Topics and Well Written Essays - 500 words

Reflaction Paper (Earth Science) - Essay Example I found the discussions about the tectonic plates to be fascinating. I especially liked the parts about the shifting of the tectonic plates and the natural disaster results. I would like to know more about these phenomena, and how to avoid the injuries and catastrophic damage that occurs when these shifts happen. How global warming will affect the next generation? With the increasing usage of fossil fuels worldwide, I think the effects of global warming are the most troublesome and threatening to mine and the next generation. Global warming is affecting the temperatures, the biology and botany of the planet, the air quality, the water levels, the plant life and the populations around the world. This increasingly dangerous event is contributing to the widespread emergencies of drought and famine, flooding and polar ice melts. Glaciers are melting every day. The rain forest is decreasing each day. The beaches are eroding. The rains are increasing, with monsoons and hurricanes. The wind currents are producing terrible tornadoes, all because of the global warming effect. ` Most disturbing of all, is the rapidly increasing death toll caused by mosquitoes that breed from the pools of stagnant water. In Africa last year alone, over 1 million people died of dengue fever. It is expected that dengue fever, carried by a mosquito, will be the world’s next endemic.

Service value evaluation on the restaurant in London Dissertation

Service value evaluation on the restaurant in London - Dissertation Example Additionally, the researcher will also present a glimpse of the survey questionnaire which will be used to gather primary data. Lastly, limitations to the adopted methodology will also be presented for readers’ understanding. 2. AdoptedMethodology In order to plan and align activities with the research schedule, research methodology plays a vital role in outlining a roadmap. On the other hand, adopted research methodology clarifies the guidelines and principles that should be strictly followed by the researcher to successfully complete the study. Reliability of the primary data is also relied on the selection of appropriate research methodology in order to develop a valid conclusion and set of recommendations by the end of the research work (Kothari, 2004). Keeping this in view, two types of research methodologies are available to researchers. One is qualitative, and the other one is quantitative research methodology. Qualitative researchers are those, which tends on to explai n natural phenomenon pertaining to the area under study. In qualitative researches, researcher observes a natural phenomenon and interprets it according to his personal approach towards the area of study. Qualitative researchers are widely known as multi-method approach which includes interpretive and naturalistic view on the area which is being examined by the researchers (Gillham, 2000). It is important for the researchers that they conduct qualitative researches in natural settings and build logic with the help of theories around the answers presented against the research questions. The data retrieved for completing a qualitative research study is retrieved from sources that provide detailed answers to the research questions. These sources of information can be interviews, focus group discussion, personal observation and etc. Another important aspect that needs to be noticed here is that, qualitative researches are based on inductive approach usually as it requires researchers to explore phenomenon and implicate the findings to the general environment (Crowther & Lancaster, 2012; Gordon & Marian, 2006). Then there is quantitative approach to research work which requires researchers to support the findings of the study with the help of statistical data. Research works based on quantitative approach are considered as more authentic than qualitative approach as it supports the findings of the study scientifically. On the other hand, quantitative research works are based on deductive approach as they rule out the findings which are not reliable and focus only on those findings, which are scientifically proven by statistical figures and justified by the previous work conducted on the same subject. Researches that are based on quantitative approach are generally more reliable as they look for cause and effect to build up a suitable conclusion and recommendation part. Keeping the discussion pertaining to quantitative researches, it can be asserted that quantitativ e researchers are more reliable and authentic as compared to qualitative research methods (Jackson, 2010). Keeping in view the context and aim of the present study, the researcher has adopted quantitative approach to research work, i.e. the researcher will use both quantitative research methodology to ensure the authenticity of the primary research with the help of statistical testing. By doing this, the researcher wi