Cardiovascular system Essay Example | Topics and Well Written Essays - 2500 words

Cardiovascular system - Essay Example Demonstrate the adaptability of the cardiovascular system to autoregulate to two different, stressful conditions (1. Max test 2. Steady state exercise at 65% maximum oxygen level). Explain in detail how the different cardiovascular components such as heart rate, systolic blood pressure, diastolic blood pressure, total pulmonary resistance, stroke volume and blood flow, respond to these stressful conditions. Explain in detail the physiological mechanisms responsible for the changes observed.The cardiovascular system has the capabilities to adapt to a number of external factors. An example of the cardiovascular system’s ability to adapt is seen in response to a max test. This test measures the volume of oxygen in the blood that the body uses in one minute of maximal exercise. A stationary exercise machine is used when administering the test. The first-minute interval is done at a very easy level. As each minute passes the levels become increasingly more difficult until you reach a levels when you can no longer continue. The max test requires you to wear a mask and to breathe through your mouth. The mask is connected to an analyzer that looks at the levels of carbon dioxide and oxygen in the exhaled gas. You are also hooked up to a heart monitor. Using the information gathered you could figure out your cardiovascular fitness and define your maximum aerobic power.The max test causes an increase in heart rate, because there is an increased need by your muscles for oxygenated blood ... stroke volume in this case would decrease due to the fact that the peripheral vessels, which have higher pressures, increases. The increased heart rate causes the ventricles to not fill as full, thus lowering the volume pumped out of the ventricles by each contraction. The final stage of the max test is anaerobic. This stage looks at how quickly the body can remove the lactic acid. The increased heart rate helps in the removal of lactic acid. If you have crossed this threshold you will be prematurely fatigued and may feel your muscles burn. Toga et al. states that "during hypoxia, the total" pulmonary "resistance decreased with increased blood flow" (Effects of hypoxia, 1998, 1003). Steady state exercise is different from the max text, because it does not increase in intervals. In the steady state test you also have the increase in systolic blood pressure, but there is no dramatic increase in diastolic blood pressure. When steady state exercise has been done over time the effects are a minimal change in blood pressure and a higher red blood cell count (blood is more easily saturated with oxygen). Once finished with steady state exercise the systolic blood pressure will drop to below normal levels for a brief period of time. Steady state exercise, when done on a regular basis, will decrease heart rate. A decrease in heart rate will allow the ventricles more time to fill. . Stroke volume is the volume of blood in the ventricles during diastole minus the volume of blood in the ventricles during systole of the same heartbeat. If the heart rate is slower it allows for more filling of the ventricles hence a larger stroke volume. There are other factors that also contribute to these different cardiovascular components. Khaksari et al.

Establishment of Slavery in English Colonies Research Paper

Establishment of Slavery in English Colonies - Research Paper Example ough one should not excuse the men and women who started slavery in the colonies on the basis of cultural relativism, one also should not ignore the causes of slavery in the first place. First, understanding the origins of slavery is important for preventing the institution from ever returning. Second, it is important to scholars to understand the social and economic conditions of the early English colonies, and the perspective of slaves (and slaveholders) provides an excellent perspective on that history. Common belief in our day is that slavery itself began as an expression of racist ideologies against the African continent (Williams). However, it seems more likely that slavery took its origins in the English colonies with economic factors and the growing capitalist ideology sweeping across Europe and her farthest outposts. Slavery on the British Isles was nearly nonexistent throughout the kingdom’s history; nevertheless, the institution of slavery spread like wildfire throughout its colonies, and was common operating procedure by the 17th century. In her seminal work The Origin of American Slavery, historian Betty Wood addresses the question of social and economic causes for slavery in the English colonies. She ascribes the origin of slavery to both factors: racism and economics. She writes, â€Å"Albeit with the benefit of hindsight, it would seem from the outset American slavery was characterized by an awareness of ethnic differences that over the course of a century hardened into an overt racism† (Wood 7-8). But this does not answer the crucial question of whether racist ideologies or capitalist ideologies played the crucial role in the very beginning of slave trade. There are arguments to be made for either case. A Marxist historian, for instance, might blame capitalism more readily than a historian of African history, such as William Dillon Piersen in his Afrocentric From Africa to America. To consider both sides of the debate, one must analyze the

Issues in Global Business Burberry 2012 Essay Example | Topics and Well Written Essays - 2000 words

Issues in Global Business Burberry 2012 - Essay Example Small portion of the study discusses the impact of Profit before Tax on strategic buyback decision of Burberry. The company needs to expand their global franchise operation in order to decrease value chain cost. The study will focus on globalization strategy of Burberry Group plc in terms of retail distribution network. Report shows that direct control strategy of the company will help them to push total market capitalization in near future. Hybrid matrix structure of Procter and Gamble has been recommended for future growth Burberry Group. Hybrid matrix diagram will help the company to set up strategic business units in Asia and Latin America. Table of Contents Table of Contents 3 Case Statement 4 Strategy Analysis 5 Financial Perspective 5 Leverage Control 6 International Growth Strategy 8 SWOT Analysis 8 Porter’s Five Forces Analysis 9 Strategic Theme 11 Conclusion 11 Recommendation 12 Reference 14 Burberry Burberry Group plc is a renowned global luxury brand. The company i s headquartered at London, England. Burberry Group plc was established by Thomas Burberry in the year 1856. The brand specializes in offering apparel and leather goods. Burberry Group plc offers products through diversified distribution network complemented by retail channel, wholesale, licensing channel and digital platform. The company has achieved a total revenue growth of 7% in the year 2011. Burberry has created a digital platform named as â€Å"Burberry World Live† in order to enhance their web visibility. Intraday market capitalization of the London based company is $5.3 billion while they maintain a profit margin of 12.1 % on category sales (Yahoo Finance, 2012). Case Statement Burberry Group plc has recently announced that they will directly operate in beauty and fragrance category. The company has no plan to continue license relationship with their partner Interparfums SA. Fragrance and beauty has been categorized as fifth product division for Burberry Group. The ot her four categories are accessories, women apparel, men apparel and children apparel. Angela Ahrendts (Chief Executive Officer of Burberry Group plc) has stated that they took the decision of direct control in order to achieve greater control over product portfolio of fragrance and beauty category. The CEO believes that the company has significant opportunities to drive growth from fragrance and beauty products and the move will also leverage infrastructure & upward integration of value chain. Direct operation of the company for fragrance and beauty categories will start from 1 April 2013. Burberry Group took the decision for following strategic objectives. Achieving greater brand control Increase penetration in opening price point categories The company will pay all total Euro 181 million for ending license relationship and ?71m of total amount will be used for recognising exceptional items The London based company will earn a adjusted profit before tax or PBT in financial year 201 3/14 and from FY 2014/15 the PBT will accelerate Retail and wholesale contribute 90% of total business for the company hence they will design diversified retail channels for their fifth product category (Burberry Group plc, 2012) Strategy Analysis Burberry has purchased the perfumes selling license from Interparfums SA by paying ?142m. Stock analysts believe that the company is pushing harder in the perfume and cosmetic segment in order to

Procurement assignment Case Study Example | Topics and Well Written Essays - 2500 words

Procurement assignment - Case Study Example When it comes to getting goods, raw materials and other kinds of specialized services, these organizations tends to rely on the process of procurement, in order to get the best suppliers for the intended services and goods needed for the success of their business goals and objectives (Amaratunga & Baldry 2002, p. 45). The procurement process, as used in such organizations refers to the act of acquiring services, goods and different kinds of works from external sources different from the business. In the process of procurement, it is very important that those particular goods and services as well as other kinds of works be very appropriate, being procured from the best and favorable costs that are according to the needs of the business organisation with respect to their quality and quantity standards. A procurement process that is professionally done enhances success in business functions, something that later becomes a competitive strategy for the particular businesses (Sekaran 2003, p. 23). Public and corporate bodies often define procurement as the processes aimed at promoting open and fair competition for their particular businesses while minimizing exposures to instances of fraud and collisions. This paper examines the process of procurement as done by an engineering firm that was seeking the services of oil explorers in Kazakhstan. Kazakhstan is one of largest countries in Europe, being estimated to have a size that is almost equivalent to that of Western Europe. The country comprises of a highly varied landscape that stretches all the way from the mountainous sections found to the east, going all the way to the vast lowlands that are energy rich to the west. Additionally, it includes the largely industrialized northern lands with their cold climates that go all the way to the steppes of the semi-desert of the central belt, all the way to the very fertile grasslands found to the south. Kazakhstan is a