Electrical Conductivity of the Heart essays

Electrical Conductivity of the Heart essays Have you ever wondered just how important your heart is? Do you ever think about it to keep it beating? Well, the answer is probably no. Your heart is an amazing organ. It has the ability to function on its own. The heart is about the size of you fist lying in the middle of you chest. It is composed of numerous fibers and tissues, which allows it to operate and pump blood though out your body. The fibers allow electricity to be transmitted across the heart. The main areas that deal with the electrical impulses are the SA node, the AV node, the Bundle of His, and the purkinje fibers. Together, all these components contract the heart and pump blood through the body. The sinoatrial (SA) node, or the natural pacemaker of the heart, is where the electrical impulses are generated. It is located in the upper wall of the right atrium near the opening from the superior vena cava. The SA node sets the contraction rate by generating nerve impulses which travel through the heart wall and then both atria contract. It does not need an external stimuli for the production of the electrical impulses, it does this on its own. The normal rate for the impulses to be generated is between sixty and eighty beats per minute. This rate can increase when one is aroused, exercising, angry, or frightened and this rate can decrease when one is sleeping or hibernating. From the SA node to the next receptor in the heart, it only takes fifty milliseconds for the signal to travel. The next set of specialized tissue is the atrioventricular (AV) node. It is located in the bottom of the right atrium in the interatrial septum. When the electrical signals reach the AV node from the SA node, the signal is delayed for one-tenth of a second to allow the atria to empty their contents of blood. The AV node is slightly smaller in size than the SA node and the AV node causes both ventricles to contract. The normal rate of the AV node is between forty and...

Comparison of the Figure of Achilles with Odysseus and Gilgamesh Research Paper

Comparison of the Figure of Achilles with Odysseus and Gilgamesh - Research Paper Example In Edel’s view, the definition of self-sufficiency cannot be limited with a mere reference to the 'self' of a man. It also involves the society in which he lives that comprises his parents, children, wife, friends and fellow citizens, "since man is by nature a social and political being" (Johnston par. 8). This paper is an attempt to compare and analyze the heroic figures Achilles and Odysseus, in the light of Aristotle’s statement. The thesis statement of this paper is that Achilles is a self-sufficient god-like figure, when compared to Odysseus, who constantly fights to reach his homeland and reclaim his family and home. Homer is the author of the 'Iliad' and the 'Odyssey', the two major Greek epic poems that form a significant part of ancient history and classic literature. The Iliad deals with the incidents that take place in the tenth year of the Trojan War, with special emphasis to the famous Greek warrior Achilles.Odyssey, on the other hand, deals with the return of Odysseus, the King of Ithaca, in post-Trojan War. Achilles and Odysseus are considered as the greatest Achaean heroes of Trojan War. Odysseus is a great leader, orator, and tactician; whereas Achilles is a daring warrior, who is proud of his abilities. Homer does not portray Achilles and Odysseus in generic human forms. His heroes are men who are warriors, consistently indulging in activities that require unique traits and qualities, beyond the deeds of normal human forms. Homer portrays Achilles and Odysseus as men possessing different distinguishing qualities that make them absolutely fit for the ancient Greek notion of 'heroes'. According to Lash, a hero possesses "a consistent capacity for action that surpasses the norm of man or woman" (Lash 5). Lash also states that a hero is not superior to human norms. A man is defined 'hero' with regard to his â€Å"traits and unique style of action [that]mark him as having 'arete', excellence. In excelling and exceeding himself, the h ero becomes a model of higher potential for his clan, his race, his nation, and even for humanity at large" (Lash 5). Homer’s heroes are therefore males of exceptional abilities, with a great potential to excel a range of activities, and in doing so, become a source of inspiration to others. Achilles, the son of Peleus and Nereid Thetis, is a mighty warrior with god-like rage, which is uncommon among human forms. Homer mentions Achilles as god-like many a times and attributes the appearance of a God to him. Achilles is a self-sufficient man, as explained by Aristotle, except for his need for women. He is aware of his destiny that the city of Troy cannot be taken without his help, as prophesied by the seer Calchas. Achilles also knows that he is destined to die in the Trojan War. When Agamemnon offers material benefits for his participation in the Trojan War, Achilles replies that his life is more worth than these benefits. The sole aim of Achilles is to become an excellent wa rrior. He prefers death to dishonor, and yearns for a glorious death in the battlefield. When Agamemnon, takes away Achilles’ war-prize Briseis from him, Achilles turns against Agamemnon and refuses to fight for the Greeks. Achilles of The Iliad, on the other hand, is an archetypal hero who is in charge of the Myrmidons. He becomes arrogant and selfish, and turns against Greek forces. He asks Thetis to plead with Zeus, to bring failure to the Greeks, so that Agamemnon would realize his value. When Briseis is returned to Achilles, he with draws from fighting. Later, he is filled with rage, when Hector kills Patroclus, his friend, who fights in his place. Achilles returns to the fight and kills Hector. In rage, he desecrates the body of

Euro-Mediterranean Partnership Essay Example | Topics and Well Written Essays - 1500 words

Euro-Mediterranean Partnership - Essay Example 3. The rapprochement between peoples through a social, cultural and human partnership aimed at encouraging understanding between cultures and exchanges between civil societies (Social, Cultural and Human Chapter)." http://europa.eu.int/comm/external_relations/euromed/index.htm It is an ambitious initiative with bilateral and regional dimensions and multilateral dimension supports, in the increasingly globalised world. Under MEDA programme, they are creating partnerships in all aspects like regional integration, socio-economic balance and financial and technical assistance. Despite these, in 2005 convention, it is noted MEDA was "created at the initiative of the European Parliament in 1996, the program grants aids to no-profit associations, Universities, Research Centres and public Bodies in order to realize projects aimed at promoting democracy, freedom of expression and association, and safeguarding specific groups, such as women, young people and minorities. The granted funds for this kind of projects can total a maximum of 80%" http://www.euromedi.org/inglese/home/partenariato/partenariato.asp). Despite these, in 2005 convention, it is noted that MEDA had very slow advancement. ... in the partnership are peace, security, stability, good governance and democracy, sustainable economic development and reform, education and socio-cultural exchanges, justice, migration and social integration, human rights and democratisation, political and security cooperation, information and communication technology, trade, financial cooperation, dialogues between two or more cultures, and the visibility of the process. It has announced that heredity sites would be maintained and safeguarded, 'Creating a future that care for the past'. "Its aim was to conserve and inventory manuscripts held in small libraries dotted throughout North Africa and the Near East, thus preserving the books and the wisdom they contain," Euro Mediterranean Partnership (2002, p.14). Main topics that would be investigated in the Research are as follows: 1. Illegal immigration into prosperous countries, an annoying issue that has to be controlled and guided in a proper way. Most of the European countries are facing problems due to illegal immigration and are trying to find ways and means of curbing them, while legal immigration would be encouraged. EU is facing extensive confusion as a result of illegal immigration. Research would probe into this matter and would try to present a clearer picture. 2. Security and Terrorism are the two issues that have been haunting every country today, and more so, the Western powers. After the fanatic Muslim movement lifted its ugly head in certain regions, curbing it has become the priority issue to all affected countries. Research would investigate these issues with other connected problems like fanaticism in European countries, growth of terrorist activities, help from Middle East countries in controlling training camps for potential terrorists and

Stress Related Factors in Different Types of Schooling Essay Example for Free

Stress Related Factors in Different Types of Schooling Essay Abstract The purpose of this research is to determine the advantages and disadvantages of students who attend on ground schools or online schools and to understand the cause and effect with different levels of stress in students who attend both types of schooling. Common stress in students who attend both types of schooling are feeling intense pressure to achieve high grades, trying to establish a romantic/social life, and dealing with the costs of college. Stress in college students can cause negative effects toward grades, health and relationships if it is not managed properly. The advantages and disadvantages of attending either school type depend on a student’s self-perception, personality, learning skills, weaknesses and strengths. A common advantage when attending an online school is that you are able to wear whatever you want, and set your own schedule. A common disadvantage when attending on ground school is rearranging your schedule to fit in and arrive to classes on time. Stress Related Factors in Different Types of Schooling Stress is the bodys way of rising to a challenge and preparing to meet a tough situation with focus, strength, stamina, and heightened alertness. Every individual will stress at some point in their lives. When dealing with education, there are several causes for a student to become stressed. No matter how you choose to obtain your education, stress is inevitable. There are two main ways to receive an education. A student can choose to attend school online, which consists of relying on technology to do research and complete assignments. Another alternative for a student to attend school is the most common among young students. A student can attend school on ground, which is also known as on campus, consists of having interactions with their instructors and peers. However, for each schooling type, the reasons for stress may differ: a student’s ability to handle or manage stress is based  on their personality, strengths, and weaknesses. With stress also come advantages and disa dvantages when attending both types of school. The stress involved in each type is determined more or less stressful based on how a student interprets and deals with the situation. On ground schooling allows for students to experience several situations and factors that could cause stress. This type of schooling involves face to face interaction with teachers and peers. The most common stressor for a student when faced with social interaction deals with social issues. Worry of making friends, fitting in, being judged, and or their appearance can cause a student to have stress which could result in low grades, participation, and attendance. Students that usually have issues with social interactions, usually benefit more when attending online classes. Going to school online has limited to no face to face interaction and allows anonymity. If a student is shy or unable to share an opinion because of time restraints in a traditional classroom, online courses make it possible for all students to participate in discussions. (College Atlas 2004-2011) A student that decides to attend online schooling may have less stress because the lack of social interaction, but could experience drawbacks with not having it as well. An online student receives little or no traditional participation and no interaction with the teacher or their peers. Students who learn by hands on or face to face interaction lose all of this when they take classes online since you can’t physical meet with you teacher or peers. (UK essays 2003) When a student has a question or needs an explanation, they do not have the benefit of simply raising a hand and instantly receiving an answer. Instead, an online student must either e-mail, post on a discussion board or if possible call the instructor. Students could determine whether working at their own pace or working by a set schedule is more beneficial to their learning skills. Depending on the student and their learning abilities, determines which type of schooling would better aid them. Online schooling is more seen to have a self-paced curriculum. An advantage to having a self-paced curriculum is flexibility which allows a student to set their own study time. This could mean after work, at night, before the kids get up, or during your lunch break. Even if you need to log in to the campus Web site at 3 a.m., youll still be able to complete your work. (Amy Brantley 2003-2012) When students follows a set schedule, many of them may find the  structure and regularity found at an on ground school beneficial, as opposed to a self-paced type of curriculum that makes up an online school program. (Degree Directory.org 2003-2012) Though, some students excel better with having set their own schedule this type of schooling allows for procrastination to be more common. When a student follows a set schedule, they are required to attend classes and turn in assignments on the dates and times given by their instructor. Depending on an individual’s preferred type of learning skill will determine which type of schedule is easier or more beneficial for them. When attending an on ground school, a student might be required to work in a group, participate in a class project, or contribute to a knowledge-building enterprise, uses dialogue, hands-on learning, or context. (Marcy Driscoll, 2011) Online schooling does not require a student to learn in these ways, seeing as they are only possible when being physically present. Instead, online students may be required to participate in discussions, complete lab work, or research information on the web. On ground schooling uses more learning activities that involve student and teacher interaction, whereas online schooling uses more independent activities. Choosing to attend school online requires having proper up to date technology and know-how of using this technology. (Education Portal 2003) Many schools offer tech help regarding their online classes and most do have basic help desk support available to distance learners having trouble with an online course or hardware. Failure to meet these requirements could cause stress for the student because their grade/s are given based on completion of the assignment/s. For example, not having internet access will affect your ability to turn in an assignment, which could result in a failing grade. When attending on ground schools, technology is not usually required in order to complete assignments. If and when it is, the technology is made available for use for the students. The advantage to having this technology offered to an on ground student is that there are people there who will help a student better understand how to use the technology if needed. There are different amounts of stress between on ground and online schooling that are primarily based on different forms of teaching and the different causes of stress in each type of schooling. These reasons differ from how a student is taught, how they study, how assignments are completed turned in and instances and occurrences they may encounter  when at school on ground or at school online. A way of doing something is considered stressful to one person, but may be considered less stressful to another. Organizing time, maintaining healthy habits, setting realistic goals, developing good coping mechanisms and seeking help if needed can help a student deal and manage stress when attending either online or on ground schools. References Tan, J., Yates, S., (2009, May 23) Academic Expectations as Sources of Stress in Asian Students Retrieved from http://search.proquest.com.ezp00vi9.lirn.net/psychology/docview/887954857/13A9A6956F874EA0FDC/1?accountid=40833 Rukhsana, K., (2010) Perceived Stress, Academic Workloads and Use of Coping Strategies by University Students –Journal of Behavioral Sciences. Retrieved from: http://search.proquest.com.ezp00vi9.lirn.net/psychology/docview/612887679/13A9A6956F874EA0FDC/2?accountid=40833 College Atlas ‘A World to a Higher Power’ (2004-2011) Retrieved from: http://www.collegeatlas.org/why-online-learning.html Advantages Disadvantages of Classroom Learning and Online classes (2003) Retrieved from: http://www.ukessays.com/essays/education/advantages-disadvantages-of-classroom-learning-and-online-classes-education-essay.php Brantley, A.,(2003-2012) Advantages and Disadvantages of Taking Classes Online Retrieved from: http://colleges.collegetoolkit.com/guides/onlinedegree/advantages_and_disadvantages_of_taking_clases_online.aspx What Are the Advantages of Campus-Based Education Vs. Online Education? (2003-2012) Retrieved From http://degreedirectory.org/articles/What_are_the_Advantages_of_Campus-Based_Education_vs_Online_Education.html

Are Our Morals Genetically Determined or Merely Assumed? :: Philosophy Biology Essays

In a recent commentary for BBC News, Clark McCauley, Professor of Psychology at Bryn Mawr College, analyzed the issue of human evolution from a standpoint that drew on his knowledge of psychology: gradual and collective changes in human behavior. According to McCauley, as environments and situations changed, human behavior was forced to adapt accordingly. In his comments, McCauley cites the example of disgust; although it is now a common human reaction, McCauley claims it once did not exist. As humans became less capable of digesting raw meat, disgust became an important deterring force that, through the process of evolution, became a familiar and shared part of human existence. Evidencing his claim, McCauley pointed to the fact that humans have a shared and easily recognizable facial and bodily response to disgust. Following McCauley's line of reasoning, if there is evidence that supports changes in active human behavior over time that can be attributed to the evolutionary process, it seems likely that other aspects of human cognition and its manifestations would also be subject to evolution. This paper will address the issue of the evolution of human morality; namely, whether morality is an aspect of humanity that is constructed or innate, and, depending on those findings, whether evolution plays any role in the process of determining our morals. In order to assess morality, we must first define it and identify the prevalent philosophy behind it. In this paper, morality is defined as the rules that determine what is 'right' and what is 'wrong'. In his dissertation, Van Mildert College Student Nicholas Giles notes that while we do have forces that counteract our morals (i.e. our own desires), morality is often the "limiting factor" of our behavior. We (as a majority) do not steal, because somehow we have internalized that this is a 'wrong' or immoral behavior. Giles uses the example of being nice to our friends, so as to be considered nice ourselves, to segue into a discussion of altruism. Although Giles sees altruism, the notion of giving to others at the expense of oneself, as a counterintuitive philosophy, he recognizes that it the philosophical basis for morality (1). The biological basis for altruism seems fairly straightforward: organisms that put the welfare of other organisms before their own will be less successful than 'selfish' organisms. However, there are situation specific benefits to altruism; in many cases, organisms in a group will fare better than individual organisms (1).

Food Adulteration Essay

A) Adulterated food: a serious public health problem in Bangladesh Adulteration of food with toxic chemicals harmful to health has reached an epidemic proportion in Bangladesh. The newspapers have dubbed it as the ‘silent killer’. It is very difficult to find a sector of food industry which is free of adulteration. From raw vegetable and fruits to milk and milk products to fish, meat and processed food–every food item is contaminated. Almost every day in the news papers, newer and newer methods of adulterating newer and newer types of foods are reported. Carbide, formalin, textile colors, artificial sweeteners, DDT, urea etc. are used rampantly for this purpose. Contamination of foods with toxic chemicals pose a serious threat to public health, especially in a country like Bangladesh where due to poor health literacy, level of awareness is very low. Immediate effect of ingestion of such foods may be severe forms of diarrhoea (food poisoning), threatening life. Ironically, people from all walks of life is aware of the hazards of taking foods adulterated with toxic chemicals, but this knowledge is not translated into practice. There is no paucity of laws and regulations to contain adulteration of food in Bangladesh such as Bangladesh Standard Testing Institute (BSTI) Ordinance of 1985, and the Pure Food Ordinance of 2005. Under the purview of these rules come the following offences: fake licenses, poor quality of food, substandard infrastructure and lack of maintaining hygiene, food adulteration, food impurity, incorrect information on food packages, selling products whose date have expired etc.. B) GM Food in Bangladesh Bangladesh takes to GM food crops [DHAKA] Bangladesh has become the first South Asian country to approve commercial cultivation of a genetically modified (GM) food crop — brinjal (also known as eggplant or aubergine) spliced with a gene from the soil bacterium Bacillus thuringiensis . On 28 October, Bangladesh’s National Committee on Biosafety (NBC) approved cultivation of four indigenous varieties of brinjal incorporating a gene from the B.thuringiensis (Bt) to make it resistant to attacks by the fruit and shoot borer (FSB), a common pest in South and Southeast Asia. â€Å"We will make seeds and distribute them among the farmers. Hopefully, the vegetables will be available in the market next year,† Mohammad Rafiqul Islam Mondal, director-general of the Bangladesh Agricultural Research Institute (BARI), tells SciDev. Net. According to BARI scientists, the Bt protein in GM brinjal disrupts the digestive systems of the FSB pests, causing them to die within three days of ingestion. The approval comes in the teeth of protests from a section of health, agriculture and environmental activists, accusing the government of ignoring the possibility of negative impacts on public health from consuming the GM version of a popular vegetable. http://www. scidev. net/south-asia/agriculture/news/bangladesh-takes-to-gm-food-crops. html ?Who should and can be held accountable for uncontrolled food adulteration in Bangladesh. ?What are the main ethical issues of massive food adulteration in Bangladesh? ?What are the corruption interfaces of uncontrolled food adulteration in Bangladesh What are the ethical issues related to unbridled rise of GM food in Bangladesh and how government can play role to face the challenge rising GM food in relation to of food security and food safety? ?How best ethical practices of the civil servants can play vital role to curb food adulteration and meet the challenge of GM food. Please write down a comprehensive essay of about 1250 words (Word ranges between 1125-1375) addressing the above questions in your own work. You c Instructions 1. Use your own thinking and ideas and learning from the course. 2. Should be hand written. 3. Use A4 size paper. With margin 1. 0 top and bottom margins; 1. 0 to 1. 25 left and right and about 100-150 words per page. Use both side of the paper. 4. Use Given assignment cover page format . 5. Do not any spiral binding and extra binding 6. Use at least 6 references from different scholarly books, articles, journals or other sources. 7. Standard apply to evaluation. 8. Follow standard referencing system. Individual Assignment: Structure and Content: 40% Language, Style, Logical Flow, Referencing: 20% Consistency and Relevance: 20% Analytical Capability: 20%.

Summary Of The Negro Artist And The Radical Mountain By...

Langston Hughes has made many accomplishments that most people couldn’t make. It was a great challenge for colored people to express their feelings without going through a lot of trouble. Hughes was successful in expressing he feelings. Considering the fact that he was half Caucasian and half African American, he wasn’t treated the way he was supposed to. So he wanted to do something about it and change the course of history. On June 23, 1926, Hughes published a stunning essay called â€Å"The Negro Artist and the Radical Mountain.† This essay captured the philosophy behind art and radical problems faced by black artists. In essence, he talks about how a young Negro poet did not want to be recognized as a â€Å"Negro poet.† Instead, he wanted to†¦show more content†¦We younger Negro artists who create now intend to express our individual dark-skinned selves without fear or shame. If white people are pleased we are glad. If they are not, it doesnt matter. We know we are beautiful. And ugly too. The tom-tom cries and the tom-tom laughs. If colored people are pleased we are glad. If they are not, their displeasure doesnt matter either. We build our temples for tomorrow, strong as we know how, and we stand on top of the mountain, free within ourselves.† Hughes clarifies how colored people should pay more attention to their own beauty. Hughes sums up the life and thoughts of young negroes’ like the young poet he described at the beginning of his essay. Another great work of art by Langston Hughes was a poem called â€Å"Harlem Sweeties.† He uses the term â€Å"sugar hill† and different shades of food to illustrate the personality and beauty of the melanated people of Harlem. Some of these examples include descriptions such as coffee and cream, chocolate, walnut tinted, coco brown, and many more. In another poem called â€Å"My People,† Langston illustrates how wonderful his people are. He express es the beauty of his people by talking about the beautiful night. Not only does Hughes describe the people of Harlem in his poem, he also demonstrates the struggles in his life that he had to deal with. Hughes has a white