The Migration Of Diaspora And Diaspora Studies Essay

‘Diaspora’ has its roots in the Greek word Diaspeirein – â€Å"to scatter about, disperse†. Dia means â€Å"about, across† and Speirein means â€Å"to scatter. Earlier, Diaspora was used to refer to citizens of a dominant city who immigrated to a conquered land with the purpose of colonization, to absorb the territory into the empire. That is why there are a lot of arguments between scholars as to what ‘Diaspora’ and ‘Diaspora studies’ mean. Diaspora is located between cultures, between majority and minority, nation and non-nation, citizen and foreigner, original and hybrid. The Indian Diaspora is a general term to describe the people who migrated from India. Migration has taken place due to historical, political and economic reasons including higher education, better prospects and marriage. However, the migrated Indian community has showed greater sense of adjustments, adaptability, mobility and accessibility. During the ancient times a large number of Indians migrated to other parts of Asia to spread Buddhism and to trade. During the British period, a major lot of Indians migrated due to misery, deprivation and sorrow to the U.K, Africa and U.S.A. Migration was also in wave in the nineteenth century in order to flourish to the developed economies like the U.K., U.S.A. Australia etc. It was a major wave as it gave rise to immigration either to study or settle and it goes on till present date following the footsteps of the succeed lot. The situation today is that the IndianShow MoreRelatedExploring The Similarities And Differences Theories On Diaspora1727 Words   |  7 PagesExploring the Similarities and Differences in Theories on Diaspora Jacqueline Brown describes a conversation she had with a cousin of hers during a family reunion. She asked her cousin, who was in her sixties, to describe what her life was like as a black person living in Holland. Her cousin’s shocking reply implied that the migration of poor and uneducated post-independence Surinamers caused the Dutch racism against the Black people among them. Her cousin, who had migrated before Surinam becameRead MoreA Survey Of Theories Of International Migration1544 Words   |  7 Pagesstarts with a survey of theories of international migration, the emergence of Filipino Labour Diaspora, focusing on the role of the Philippine state. Consequently, it examines the role of Canadian state in attracting FLCMs to work as domestic workers in Canada. Lastly, it examines the role of the market in perpetuating gender role and victimization in labor diaspora. 1. Theories of International Migration Theories of international migration studies often neglect the role of the state that producesRead MoreEssay on African Diaspora1818 Words   |  8 Pagesis the African diaspora? (Who should be considered in the African diaspora? How is this like the black Atlantic and how is it different?). 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The second issueRead MoreDiaspora Literature Essay2905 Words   |  12 PagesDiaspora Literature - A Testimony of Realism By Shaleen Singh Diaspora Literature involves an idea of a homeland, a place from where the displacement occurs and narratives of harsh journeys undertaken on account of economic compulsions. Basically Diaspora is a minority community living in exile. The Oxford English Dictionary 1989 Edition (second) traces the etymology of the word Diaspora back to its Greek root and to its appearance in the Old Testament (Deut: 28:25) as such it references. GodsRead MoreEvaluate the Claim That Migration Creates Global Connections.1806 Words   |  8 Pages– 06 – Option 1 Evaluate the claim that migration creates global connections. In this assignment, the strengths and weaknesses of the claim that migration creates global connections, will be discussed. 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Global Warming The Kyoto Protocol - 1183 Words

Introduction According to the American Meteorological Society, there is a 90 percent probability that the global temperature will increase between 3.5 to 7.4 â„Æ' by 2100 [1]. This increase in global warming could trigger widespread catastrophes such as rising sea levels and famine. International cooperation is crucial because there is not a single country that accounts for 26% of global emissions, and mitigation will require more than 15 countries in order to account for at least 75% of emissions [2]. Also, some countries may free ride other countries’ efforts and gain a competitive advantage because they will continue maintaining their current carbon footprint [2]. Thus, international cooperation will also satisfy a country’s political and economical concerns. In response to the threat climate change poses, the Kyoto Protocol is an international treaty adopted by the UNFCC in the year 1997, which entered into force in 2005 [3]. In particular, the protocol hopes to legally compel ratifying and industrialized countries into lowering global warming through the reduction of six greenhouse gases that affect it. Quantifiable targets included reducing collective emissions by 5.2% compared to 1990 levels, with each country having a â€Å"common, but differentiated† responsibility that was based on their contribution to global emissions (see Appendix A) [3]. Each country’s target had to be met with either national measures or the following three flexibility mechanisms that wouldShow MoreRelatedGlobal Warming And The Kyoto Protocol1470 Words   |  6 Pagesthe global warming agenda and tackle the issues surrounding the Kyoto Protocol. The second part will look at climate change and the protocol from the respective lenses of realism a nd liberalism. I will argue that while none of the theories precisely covers the entirety of the issue, each provides helpful analysis falls short of clarifying the entire climate change picture. Can states cooperate effectively through the structure of the Kyoto protocol to solve an international problem of global warmingRead MoreKyoto Protocol And Global Warming1173 Words   |  5 PagesIn December 1997, Kyoto protocol was signed to address global warming specifically. Global warming is the â€Å"gradual increase in the average temperature of the Earth s atmosphere and its oceans due to green house gases emissions.†(NRDC, 2005) In the past 100 years, the rate of global warming is unprecedented. In fact, global warming has become one of the most challenging environmental problems in the 21st century. In order to effectively address this issue, international cooperation is necessary.Read MoreGlobal Warming And The Kyoto Protocol1737 Words   |  7 Pagesgovernments have bee n working on addressing one of the major challenges the world has been challenged to this day which widely is known as Global Warming. The Kyoto protocol is the well-known abiding playground internationally recognized as a global treaty placing obligations on developed nations to significantly minimize their Green House Gas emissions first adopted in Kyoto, Japan in 1997. Three actions are recommended for the UN to take up on: First, the UN shall bring all the major actors onboard toRead More Global Warming and the Kyoto Protocol Essay886 Words   |  4 Pages Global Warming and the Kyoto Protocol   Ã‚  Ã‚  Ã‚  Ã‚   In the world today there are talks about why and how the people of this planet are polluting the rivers, lakes, soil, and even air. 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Any general argument about global warming has to address at least the following five questions: 1. Is global warming really occurring? 2. If global warming is occurring, are humans responsible for it? 3. If global warming is occurring, whatRead More Global Warming Blown Out of Proportion Essay1126 Words   |  5 PagesGlobal Warming Blown Out of Proportion The United States by no means should consider complying with the Kyoto Protocols. My conviction in the negation towards passing this bill is that the whole Global Warming idea is highly blown out of proportion by politicians and the mass media. Global warming, as it may exist in the most gentle form, is the result of natural changes and could yield positive benefits. It is a predictable, quantifiable process. Thus the Kyoto planRead MoreGlobal Warming And Climate Change1339 Words   |  6 PagesIntroduction Environmental Problem Kyoto was created in 1997 during the Third Conference of the Parties of the UNFCCC with the objective to globally reduce GHG emissions and ultimately address climate change (United Nations, 1997). This international agreement is based on the premise that global warming is mostly due to GHG emissions and those emissions are undeniably anthropogenic (United Nations, 1997). International Cooperation Because the atmosphere is a public good, individual countries haveRead MoreKyoto Protocol And Its Effect On The Earth s Natural Cycles999 Words   |  4 Pages20th century, global changes were measurable. This marked the beginning of the â€Å"Anthropocene†, and era where human activity became a force affecting the Earth’s natural cycles. One of these changes is a global planetary warming, causing more frequent droughts or heavy rains depending on the locations, ice cap melting at the Earth’s poles and rising sea levels, triggered by the emission of massive amounts of man-made greenhouse gases, mostly carbon dioxide (Holland 2015). This warming impacts everyone

Cardiothoracic ratio and the maximum transverse diameter of the heart Free Essays

string(114) " distinct bulbus cordis in contrast to the inflow portion which arises from ventricular tissues \(Malcolm 1977\)\." CHAPTER ONE 1.0 INTRODUCTION Cardiothoracic ratio is the maximum transverse diameter of the heart divided by the greatest internal diameter of the thoracic cage (from inside of rib to inside to rib). (Herring, 2003). We will write a custom essay sample on Cardiothoracic ratio and the maximum transverse diameter of the heart or any similar topic only for you Order Now In normal people, the cardiothoracic ratio is usually less than 50% but, in black people up to 55% may still be normal (Sutton 1988). Therefore the cardiothoracic ratio is a handy way of separating most normal heart from most abnormal heart. (Herring, 2003). A heart can be greater than 50% of the cardiothoracic ratio and still be a normal heart (Herring, 2003). This can occur if there is an ultra cardiac cause of cardiac enlargement which include; 1. Pectus excavatum deformity 2. Straight back syndrome 3. Inability to take deep breath because of obesity, pregnancy etc. (Herring 2003). The ratio may also increase in elderly. This may be to an in folding of ribs, reducing the thoracic component of the ratio (Sutton 1985). The transverse diameter of the heart can be measured directly on a radiograph at 1.83m (6ft) upper limit of 16cm for men and 15cm for women are usual (Sutton 1985). The advantage of a single measurement of that it can be held to be compared in serial films. At difference of 2cm is held to be a significant change. This applies only when the heart is originally normal (Sutton 1985). Normally, the third of the cardiac shadow lies to the left of the midline and one-third to the right (Berry 2003). In normal individual, the transverse diameter of the heart on PA film is usually in the range of 11.5cm to 15.5cm. it lies less than 11.5cm in about 5% of people and only rarely exceeds 15cm (Benny 2003). The maximum transverse diameters of the cardiac shadow at the chest radiograph film consist mainly of the diameters of the left ventricle and right atrium as shown by radiograph (Hada, 1995). The ratio is influenced by many factors, not only left ventricular dilatation or hypertrophy but also dilatation of the other cardiac chambers and aorta, rotation and shift of the heart, respiratory phase, body posture and measurement errors (Hada, 1995). Anatomy of the Heart Development of the Heart The development of the heart begins in the middle of the third week from the cardiac progenitor cells in the epiblast, immediately lateral to the primitive streak. Cells destined to form cranial segment of the heart, the outflow tract migrate first and cells forming more caudal portion, right ventricle, left ventricle and sinus venosus respectively migrate in sequential order. Series of developmental processes later leads to formation of a horse-shoe shaped endothelial lined tube surrounded by myoblasts in the cardiogenic field. In addition to cardiogenic region, other clusters of angiogenic cells appear bilaterally, parallel and close to the midline of the embryonic shield. Theseclusters acquire a lumen and form a pair of longitudinal vessel called dorsal aorta. These vessels later gained connections via the aortic arches with the horseshoe shaped region that form the heart tube. As the embryo folds cephalocaudally, it also folds laterally and as a result, the caudal regions of the paired cardiac primordial merge their caudal most ends. Simultaneously, the crescent part of the horse- shoe shaped area expands to form the future outflow tract and ventricular regions. Thus, the heart becomes a continuous expanded tube consisting of an inner endothelial lining an outer myocardial layer. The heart at this stage consist of three layers (a) Endocardium – forming the inner endothelial lining of the heart. (b) Myocardium- forming the muscular wall (c) Epicardium or Visceral pericardium- covering the outside of the tube. Various parts of the heart later develop from the fused heart tube. (Sadler T. W 2000). Gross Anatomy of the heart The normal heart lies within the pericardial sac in the middle of the thorax slightly to the left of the middle (Sokolow 1979). The low pressure right atrium and right ventricle occupy the anterior portion of the heart and the higher pressure left ventricle and atrium his posteriorly (Sokolow 1977). The long axis of the heart from the apex of the left ventricle to the root of the aorta runs upwards and backward at an angle of about 300 from the horizontal plane and 450 from the sagital plane of the body (Sokolow 1977). The resisting and position of the heart vary with the build of the patient and with respiration. It assumes a more vertical position during inspiration in tall thin persons and more horizontal position during respiration in persons with heavier body build. (Sokolow1977). 1.2 THE CHAMBERS OF THE HEART The heart consists of four (4) chambers; that is the right and left atria and the right and left ventricle. 1.2.1 The Right Atrium The right atrium consists of two (2) embryological portions. (Malcolm 1977). The most posterior thin walled portion into which the vena cava and coronary sinus empty in from form the sinus venosus and is compose of similar tissues to that of the great vein. (Malcolm 1977). The more anterior muscular portion includes the right arterial appendage and the tricuspid valve ring (Malcolm 1977) The fossa ovalies lies in the site of the foramen ovale (Malcolm 1977). This inter-atrial communication within which is present during fetal life permits the flow of oxygenated blood from the inferior vena cava into the heart (Malcolm 1977). The patent foramen Ovale remain open or potentially open in about 15% of normal subjects (Malcolm 1977) but since it is a flap value which only allows flow right or left, it is normally functionally closed (Malcolm 1977). 1.2.2 THE RIGHT VENTRICLE The right ventricle is triangular in shape and forms a cresentric, shallow structure wrapped over the ventricular septum (Malcolm 1977), it can divided into a lower inflow portion containing the tricuspid valve and upper outflow tract from which pulmonary trunk arises. (Malcolm 1977). The line of demarcation between the two portions consists of bands of muscles formed by the cristasupra ventricularis (Malcolm 1977). The outflow tract of the right ventricles is derived from the embryologically distinct bulbus cordis in contrast to the inflow portion which arises from ventricular tissues (Malcolm 1977). You read "Cardiothoracic ratio and the maximum transverse diameter of the heart" in category "Essay examples" 1.2.3 THE LEFT ATRIUM The left atrium like the right is composed of a vein like portion which the pulmonary vein drains and make muscular anterior portion which includes the left atrial appendage (Malcolm 1977). Its wall is slightly thicker than that of the right atrium and the inner area corresponding to the fossa ovale can be seen on its right upper surface (Malcolm 1977). 1.2.4 THE LEFT VENTRICLE The left ventricular cavity is shaped like an egg. The base or the egg is formed by the mitral valve ring. The wall of the left ventricle accounts for about 75% of the mass of the heart. The aorta and mitral ring lies close to one another with the layer anterior mole cusp of mitral valve adjacent to the left and posterior cusp of the aortic valve (Malcolm 1977). The posterior immobile cusp of the mitral valve is shorter and together with the anterior cusp is lethered to the anterior and posterior papillary muscles in a parachute like shared by the two (2) cusps (Malcolm 1977). The interventricular septum which forms the outright anterior aspect of the left ventricle bulges into the right ventricle making the cross section of the mid portion of the left ventricle circular shape (Malcolm 1977). 1.3 EXTERNAL APPEARANCE OF THE HEART 1.3.1 ANTERIOR ASPECT As viewing anteriorly, the longest area of the surface of the heart is formed by the triangular shaped right ventricle with the pulmonary trunk arising from the apex of the triangle above and to the right of the right ventricle, one can see right atrium appendages as an ear shape structure overlying the root of the aorta (Sokolow 1997). The grove between the right atrium and ventricle (Coronary sulcus) is often filled with fat and is occupied by the right coronary artery. Above the right atrium, the superior vena cava is seen entering the right atrium from the back . The anterior aspect of the heart reveals only a small part of the left ventricle lying to the left of the right ventricle and forming the apex of the heart (Sokolow 1977). The anterior interventricular sulcus often contains fat and is occupied by the anterior descending branch of the left coronary artery (Sokolow 1977). The only portion of the left atrium visible from the front is the left atrial appendages, which lies side of the origin of the pulmonary trunk. The lungs normally covers most of the anterior surface of the heart especially during inspiration having only a small area opposed to the back of the sternum and left ribs (Sokolow 1977). 1.3.2 LEFT SIDED ASPECT When viewed from the left side, the ventricle and the left atrium occupy most of the surface of the heart (Sokolow 1977). The posterior interventricular groove separates the left ventricle above from the right ventricle below. The posterior descending branch of the right coronary artery lies in the groove. The anterior ventricular groove runs almost vertically in the view separating the left ventricle from the left atrium (Sokolow 1977). The coronary sinus and circumflex branch of the left coronary artery lies in the groove and complete the ring of blood vessels forming the bases of the corona (crown) after which the blood vessels supplying the heart are named (Sokolow 1977). 1.3.3 POSTERIOR ASPECT The back of the heart mainly on the diaphragm is largely occupied by the left atrium and ventricle plus portions of the right atrium and ventricle (Sokolow 1977). The point at which all four (4) chambers meet posteriorly as called the crux at the heart; because of the cross – shape pattern of the blood vessels lying at the function of the posterior interventricular groove and the anterior ventricular groove (Sokolow 1977). The vessels forming the crux are; the coronary sinus and the posterior descending coronary artery. This latter vessel may be a branch of either the right or the circumflex branch of the left coronary artery depending on whether the right or left coronary artery is largely (dominant) (Sokolow 1977). The pulmonary vein enter the back of the left atrium and the pattern may vary but the two right and the left pulmonary veins are normally present (Sokolow 1977). 1.3.4 Right Side Aspect When viewed from the right side, the right atrium and ventricle occupies most of the surface (Maurice 1977). The posterior and the anterior vena cava enter the atrium at the back and the aorta runs upward from the middle of the heart (Maurice 1977). The outflow tract of the right ventricle and the pulmonary trunk form the upper border of the heart in this view (Maurice 1977). 1.4 THE HEART WALL The heart wall is composed of the three layers of tissue, namely the; epicardium, myocardium and endocardium (Stephen 1988). The epicardium and the visceral pericardium are two names for the same structure. The sinus pericardium is called epicardium when considered a part of the heart and the visceral pericardium when considered a part of the pericardium (Stephen 1988). 1.4.2 THE MYOCARDIUM This is the thick middle layer of the heart, which composed of cardiac muscle cells and is responsible for the ability of the heart to contract, (Stephen 1988). 1.4.3 THE ENDOCARDIUM This is the smooth inner surface of the heart chamber, which consist of the simple squamous epithelium over a layer or connective tissue (Stephen 1988). The smooth inner surface allows blood to move easily through the heart. The heart valves are formed by a fold as the endocardium, making a double layer of endocardium with connective tissue in between (Stephen 1988). 1.5 OBJECTIVE OF THE STUDY The objectives of the study are To measure the heart diameter, thoracic diameter and cardiothoracic ratio of normal individual in University of Maiduguri Teaching Hospital, Nigeria. To give the comparison between the heart diameter, thoracic diameter and cardiothoracic ratio between males and females. CHAPTER TWO 2.0 LITERATURE REVIEW In 1919, Danzer undertook one of the earliest studies of the cardiothoracic ratio. After investigation nearly 500 patients without the aid of hemodynamic parameters, He determined that any measurement over 0.5 or 50% was suspicious and over 0.52or 52% was definitely pathological. A latter report by comeau and white in 1942 found that 15 to 25% of normal patient had a cardiothoracic ratio greater than 0.5 or 50% and advised that using CT ratio prediction labels based upon six, image technique and phase of respiration. A significant relationship was found between the radial measurement and age, which differ within ethnic group groups. The median value of cardiothoracic ratio was 43% in Caucasians, 44% in Asian and 46% in Africans. (Ashcroft Maills’ and Mekol). Mekol concluded that a single upper limit (e.g. 50%) for cardiothoracic ratio is unsatisfactory. It all subject with values of cardiothoracic ratio greater than 50% in the present sample had been recalled for more dedicated cardio logical investigation; this would have affected 2.2% of Caucasians, 4.1% of Asians and 9.3% of Africans limit of 5.3% in Caucasians, 52% in Asian and 53% in Africans would include 2.2%, 2.4% and 2.6% of each subject of these racial groups. (Mekol1982). Murphy M.L. in 1985 took routine posterior and lateral chest radiograph in 268 patients and analyzed to determine heart size. The coronary artery of this determination was compared with a specific ventricular mass derived from a postmortem cardiac partition technique. The data indicated that in the majority of cases (greater than 70%) a normal sized heart or cardiomegaly can be correctly determined from the chest x – ray either by subjective arterial or chamber enlargement or management of the transverse diameter (Murphy M.L. 1985). A recent meta-analysis of 29 studies determined that cardiomegaly on the cardiothoracic ratio was the best reason for predicting a reduced ejection fraction, with a sensitivity and specificity of 51% and 79% respectively (Badgett 1996). Comeau in 1942 said that it is important to recognize compounding factors of cardiomegaly such as an epical fat, a transversely positional heart. An expiratory film or decrease in thoracic width. In 1987, Kabala used a computed Tomography model in eight patients to show how the heart diameter and cardiothoracic ratio might change between anterior-posterior chest radiograph taken on 103 patients without cardiac failure and 106 with cardiac failure. An upper limit of cardio thoracic ratio of 55% and of heart chamber or 165mm in males and 150mm in females was shown to practice useful discrimination between normal and abnormal heart size (Kabala 1987). The cardiothoracic ration thoracic ratio increased with age in both sex but females have longer cardiothoracic ratio than men. Portable films taken in the anterior-posterior and supine position enlarge the appearance of cardiac silhouette (Milne 1988). CHAPTER THREE 3.0 MATERIALS AND METHODS 3.1 SUBJECTS A retrospective study was carried out in the university of Maiduguri Teaching Hospital, Department of Radiology, and using normal chest radiograph of two hundred and ninety-one (291) patients. 3.2 SAMPLE SELECTION The sample includes the normal chest radiographs taken from 2007-2009. All chest radiographs with abnormal result were excluded from the study. The age, sex from the chest radiographs was obtained. Hypertensive subjects were excluded. 3.3 MEASUREMENT A straight line drawn near the rule meddled of the heart shadow. Another line as in â€Å"a† from the right heart border to order to the first line was drown. A third line was drown from the left heart co-order furthest from the in the middle of the heart shown as the â€Å"b†. The two were then added together, the cardiothoracic rube as the own of the line â€Å"a† and â€Å"b† divided by the largest transverse internal diameter of the thoracic cage as shown on the figure 3.1 below. Figure 3.1 measurement of the cardio thoracic ratio. Cardiac diameter=A=B are the maximum extensions of the heart to the left and right of the midline respectively. CHAPTER FIVE 5.0 DISCUSSION The cardiothoracic ratio of males and females in the various age groups will be determined in future study. The ratio increased with age in both sexes but was more marked in females than males. Oberman in 1967 reported that women have higher cardiothoracic ratio than males. Men had larger cardiac diameter than women. The higher cardiothoracic ratio in women was due to their smaller thoracic diameter. This report supports the present study. Edge in 1984 also reported that the increase in cardiothoracic ratio with age found particularly in women was mainly due to contraction of the thoracic diameter rather than an increase in the cardiac diameter. Decrease in the chest diameter with advancing age indicates that cardiothoracic ratio over estimates the heart size in the elderly. Nikol and Wade in 1982 attributed that Africans have larger cardiothoracic ratio because they have smaller thoracic diameter and larger cardiac diameter. It was also noted that environmental factors such as poor nutrition and infection may cause cardiac enlargement with resultant increase in cardiac diameter and cardiothoracic ratio. 5.2 CONCLUSION The higher cardiothoracic ratio in females may suggest the reason of their susceptibility to infections arising from the heart and this could be correlated to clinical data. 5.3 RECOMMENDATION I recommend that any research on cardiothoracic ratio is best with chest radiographs. Females should always keep good hygiene because of their susceptibility to infections because of their large cardiothoracic ratio. REFERENCES Ashcroft MT, Miall WE (1969) cardiothoracic ratio in two Jamaican Communities. AM. J Epidemoil 89: 161-167. Badgett, R.C. Mulrow, P. Otto and G. Ramirez (1996). How well can the chest radiograph diagnose left ventricular dysfunction. Journal of Internal Medicine 11:625-634(medline) Comeau W J, White PD(1942).A critical analysis of standard methods of estimating heart size from Roentgen measurements. A M. J Roentgenol 47:665-667 Covoan N R (1964) The heart lung coefficient and the transverse diameter of the heart. Br Heart Journal 26:116-120 Danzer, C. S (1919) The Cardio thoracic ratio A M. J medical sciences 15:512-513 David Sutton (1993) A text of radiography and imaging, normal chest Fifth edition, Great Britain by William Clowes Limited London. P 530 Edge J R, Milliard F C, Reid L, Simon G (1964) The radiographic appearance of the chest in persons of advanced age. Br Heart Journal 26:769-773 Hada Y (1995) Cardio thoracic ratio 26 (1) :51-54 Kabala J T, White P. (1987) The Measurement of the size in the antero-posterior chest radiograph Br journal of Radiology 60 (718) :981-986 Krish namoorthy D M. (2001)100% cardio thoracic ratio Tex heart inst. J.28 (4):334-335 Kono F Suwa M, Hanada H, Hirota Y, Kawanaura K. (1992) Clinical significance of normal cardiac silhouette in dilated cardiomyopathy , Evaluation based upon echocardiography and magnetic resonance imaging . Japanese Journal 56:359-365 Manninen H, Reines J, Partenen K, Tynkkyen P, Mykkannen L, Laakso M, Soimakalio S, Pyorata K. (1991) Evaluation of heart size and pulmonary vasculature conventional chest image intensifier photofluorography Manorana Berry, sudha Suri, Veena chowdheny , Sina Mukhopadhyay (2003) normal thoracic anatomy on various imaging modalities, Diagnostic radiology chest and cardiovascular imaging second edition , Jaypee brothers medical publishers (P) Ltd. India P(1) 16 Maurice Sokolow (1997) Physiology of the circulatory system clinical cardiology first edition large medical publication carlifornia PP1-9 Milne E N C, K. Burnett, D. Autrichtig, J. Manillian, and T J Imray (1988) Assessment of cardiac size on portable chest films Journal of Thoracic Imaging 3:64-72 (medline) Murphy M.L, Blue L.R, Thennabadu P N, Philps JR, Fenis EJ. (1998). The reliability of the routine chest roentgenograph for determination of heart size based specific ventricular chamber evaluation at post mortem investigation radiology 20(1) :21-25 Nikol K, Wade AJ. (1982). Radiiographic heart size and cardio thoracic ratio in three ethnic groups basis for a simple screening test for cardiac enlargement in men . Br Journal of Radiology 55(654): 399-403 Oberman A, Mayer A.R, Karuna T.M, Epstein FH, 1967. Heart size of adults in a natural population Feamesh-Michigan circulation 34: 724-733 Philip Thorek. (1985). Anatomy in surgery, thorax. Third edition springer Newyork (PP327) Rod R Seetey, Trent D. Stephens, Philip Tate (1998) cardiovascular system, Anatomy and Physiology, Fourth Edition. McGraw Hill Newyork pp602-614 Seninge R.P and Lester R.G. History of cardiac radiology. Unpublished report 1970. Sadler T. W 2000. Langman’s medical embryology 8th edition. How to cite Cardiothoracic ratio and the maximum transverse diameter of the heart, Essay examples

Sappho and st. teresa de avila Essay Example For Students

Sappho and st. teresa de avila Essay Day by day women are faced with obstacles simply because of gender. In the plays we have read women are faced with obstacles but overcome them. Women in the past were expected to be submissive and not object to the men’s decisions. The world today has changed its face. No longer are women quiet. Sappho and her work is a good example in our readings to represent today’s day and time. Her poems seem contemporary, very modern. The Descent of Inanna ,on the other hand, is a prime example of works we’ve read that represent the past much more. I strongly believe that each generation is a product of the previous generation, and during the Ancient World, women were not expected to write. They were submissive and their religious superior had the final say. Sappho broke these rules and went against the odds. She wrote and produced wonderful work that everyone can relate to during any time period. Although religious leaders successfully destroyed a great amount of her work, the few parts and pieces that survived still describe things of today in such short lines and phrases. â€Å"At noontime† is a good example of this. It describes the sun and its’ heat and the cricket which till today â€Å"sets up a high-pitched singing in his wings.†Ã¢â‚¬Å"If you will come† is another example. â€Å"At noontime† is simple to say it relates to today’s world, the sun will always be hot the cricket will always live, but the customs and traditions of people do and Sappho still describes customs from her time that live today.â€Å"If you will come† tells of things that generally a person would do for visitors. It says, â€Å" If you will come I shall put out new pillows for you to rest on.† In just these few lines so much is said. This can be taken as literally taking our new pillows for a visitor to sleep on and rest after a long drive to your home. It may also mean that the host is making the visitor feel at home by welcoming him with open arms. Nevertheless, this poem describes customs that a person would do now. For these reasons Sappho’s works are the most modern in our readings. The Descent of Inanna is quite the opposite of Sappho. It describes Inanna going into the â€Å"underworld† a place that we do not relate to as easily as a worldly location. WE never hear of a person visiting the â€Å"underworld† and returning as if they had never left. The process of going into the underworld is another thing that we of today’s time do not relate to. Inanna is submissive and gives her material things which are being taken away from her by gate keepers. We no not normally see these customs in today’s time. A guest is never treated as an outsider, but rather welcomed and lead to the place they need to be. Stripping a guest of his/her garments and jewels is ill-mannered and uncivilized. For these reasons is why The Descent of Inanna is the most dated of the works we have read. These two works were written during the same time frame. Authors who are very well respected today wrote them both. This is their link to similarity, but their conten t is different and represents diversity in works of that time. The Descent of Inanna reflects the world in which it was written. The ideas and entertainment that were enjoyed during that time are in The Descent of Inanna, while Sappho’s works reflect both customs and physical aspects of the living world of that time it reflects the same for today’s world.