Europeans V. Natives

Reasons the Europeans Were Victorious The European explorers were able were able to defeat the Native Americans and overpower the West Africans was due to many proximate and ultimate factors that granted the Europeans the advantage. The proximate factors that helped the Europeans were their guns, germs, and steel. The Europeans had built immunity to many of the diseases and germs that they had been exposed to over the years while in Europe. But the Native Americans had never seen such diseases, so when the Europeans came over, they carried with them these germs that were completely new to the Natives.The new animals that the Europeans brought over to the Americas also carried diseases and germs that the natives had never been exposed to before. Their germs killed off a large portion of the native population. The affects of these new diseases caused devastation in many tribes. The Native Americans had not built up such natural defenses as the Europeans had over the years, so the nativ e population shrunk from 300,000 to 500 by 1548. The Europeans carried guns and steel weapons that had been made using the metals and resources from their home countries.The Natives used weapons made of copper or wood, which will not be of any use when put to the test against a weapon made of steel. Steel is a much stronger metal- it can endure more. The guns that the Europeans carried were something that the Native people had never seen before- they had no idea how they worked. As a result, they feared them. The concept can also be compared to the horses that the Europeans introduced to the Natives. They had never seen such an animal before and when they saw these shiny, metal-covered men riding these large, wild animals, they were frightened.The ultimate factors that added to the natives’ demise were the geography, animals, and agriculture. Europe is geographically situated in a region better suited for farming because of the land and weather of the climate. Eurasia’ s more East to West land stretched further horizontally and allowed for more productive farming to occur. It reigned superior to North America’s more North to South (vertical) land. The land’s layout made it more difficult to farm, which is why the Native Americans were not as technologically as far ahead as the Europeans- they were still trying to figure out the most productive farming strategies.The Europeans had their agriculture and food supply developed and sought out, so they were able to more easily develop and meet all their agriculture needs and move on to domesticating different animals and developing more advanced technology to help them. They had the time to advance their technology as well as their fighting techniques and strategies. The Europeans were also able to broaden their horizons and explore outside of their countries and become conquistadors. The natives did not feel such a desire to and stayed concerned with what they knew- surviving off the land and hunting.

Frog Heart Lab, Animal Physiology

Chemical and Environmental Effects on the Heart Introduction The heart is the centerpiece of the circulatory system, its muscular contractions allow for the timely delivery of essential gases and nutrients to virtually all cells of the body. The pressure created by the heart also plays a vital role in eliminating wastes through organs such as the kidney, thus the heart delivers and helps maintain nutrient and waste composition throughout the body. The heart, like all muscle cells, releases ionic calcium when stimulated which binds to troponin which in turn causes tropomyosin to uncover the myosin-actin binding sites on the muscle.Temperature has effects on the metabolism and activity of all cells. Warmer temperatures increase the kinetic energy of molecules in cells, providing more energy which allows metabolic processes to proceed more quickly. Cooler temperatures, on the other hand, decrease molecular kinetic energy and cause slower metabolic rates in cells and tissues, hence when a bear hibernates, its body temperature is some degree lower than it is during the bear’s active periods.The heart is also susceptible to certain molecules for which are able to bind to its receptors or diffuse across its membrane and affect intracellular activity and consequently have effects on the overall homeostatic condition of the organism. The Sinoatrial Node (SA Node) acts as the pacemaker of the heart by providing a small, autorhythmic electrical pulses that travel to the atrioventriclar node (AV node) and through the Bundle of His and Purkinje Fibers through gap junctions at the intercalated disks which stimulate the cells of the heart to contract via calcium release.This contraction is similar to a neuron in the sense that a threshold stimulus is needed to cause a contraction, a refractory period follows contraction at which time a new contraction cannot occur. Drugs that have an effect on the tissues of the heart, especially those where the SA Node resides can hav e an effect on the frequency and strength of muscular contraction via causing a stimulus to occur and lowering the threshold needed to cause a contraction. The heart is under both nervous and hormonal control.The brain is constantly receiving information from the body such as pH, CO2 levels, and many others that the hypothalamus and medulla play a role in translating and reacting to via the release of hormones such as epinephrine which affects the SA node, either by stimulating or inhibiting contraction rate. Removal of the heart from the body would result in eventual cessation of beating as these sources are depleted from the immediate environment, not to mention the absence of the appropriate ion levels needed to maintain resting cellular electrochemical gradients.All of the aforementioned aspects of heart control coordinate with Starling’s Law of the Heart, which relates to stroke volume, contractions strength, and frequency of heart contraction. This paper is interested i n investigating what the effects of the alteration of temperature, chemical environments, and physical obtrusion have upon the strength and frequency of cardiac muscle contractions. Decreasing the temperature of the heart’s environment should hypothetically result in a decrease in both frequency and strength of contractions due to the decreased ability of calcium ion channels to open and cause contraction.Various chemicals such as epinephrine and calcium ion solutions should correlate to both and increase in frequency and strength of the resultant contractions due to direct effects on the hearts mode of activation (SA node stimulus) and increasing the levels of available calcium needed to cause a contraction. Other chemicals such as Atropine should indirectly increase heart rate via the blocking of the effects of the parasympathetic system resulting in a predomination of sympathetic activity.Acetylcholine, which acts on the muscarinic receptors of the heart, should display in hibitory effects on the heart by decreasing available cAMP levels, which results in fewer phosphorylated Protein Kinases which are needed to open the calcium channels which result in contractions of all muscles of the body. Additionally, chemicals such as nicotine should have little to no effect on the effects of muscle contraction due to lack of receptors on the heart for such substrates as well as lack of nicotinic receptors on any body tissues that indirectly affect heart rate such as the brain.Methods Procedure 1: The Heart Rate The dissected frog, whose heart was left attached and embedded in the frog, was connected to a string at the most basal aspect of the heart, and wrapped around an electrical stress sensor located 15cm above the heart to detect changes in pressure on the apparatus caused by heart contractions. Unless otherwise stated, all subsequent procedures will have the same setup to minimize variability in the results obtained. The resting heartbeat was then recorded via the described instrumentation. Procedure 2: Effects of Cold TemperatureInitially, 10mL of room temperature Ringer’s solution was applied directly to the heart and allowed to contract freely for 15 seconds. The data obtained from the contractions was recorded. The heart was allowed 1 minute to recover from exposure to the solution. Next, 10mL of chilled Ringer's solution was applied directly to the heart and allowed to contract freely for 15 seconds. This data was recorded. Procedure 3: Effects of Drugs Thirty seconds of normal heart contractions were recorded at which time 2mL of epinephrine was dropped onto the heart itself.Contractions were allowed to proceed for 60 seconds during which time data was recorded. Following exposure to epinephrine, the heart was allowed to return to its resting state determined in procedure 1. This same procedure was repeated with the following chemicals: 1) Acetylcholine, 2) Atropine, 3) Calcium solution, 4) Nicotine solution, and 5) Caff eine solution. Procedure 4: The Refractory Period of the Heart Resting heart contractions were recorded for thirty seconds until the heart rate was less than 60 beats per minute. A stimulator electrode to be used was set to the following states: Amplitude of 4. 0 Volts, a stimulus delay of 50ms, stimulus duration of 10ms, a frequency of 1. 0Hz, and a pulse number of 30. The electrode was then placed in direct contact with the heart for 30 seconds at which time the data was observed and recorded. Procedure 5: Effects of a Ligature on the Heart A 30cm piece of thread was placed around the heart at the Atrioventricular groove (AV groove) and tied in a knot but left loose so as to not interrupt the normal function of the heart. The heart was allowed to beat for about 15 seconds with no pressure.After 15 seconds the knot was slowly tightened while taking care to stay on the AV groove while tightening. Data was observed and recorded. Results Procedure 1: The Heart Rate This experiment was carried out as noted about in Procedure 1. The resting heart rate was established and used as a baseline value from which to compare all future deviations. While data could not be exported from the computer to be definitively known, the relative rate and strength of the contractions were noted on a visual basis from which to compare the following experiments.Procedure 2: Effects of Cold Temperature As noted above in Procedure 1, technical data could not be obtained from this experiment and visual analysis had to suffice for data. Upon addition of room temperature Ringer’s solution, no notable change in contraction strength or frequency could be noted. Time was allowed for the heart to recover from the effects of the initial exposure. The application of cold Ringer’s solution resulted in a clear and observable slowing of the heart rate, though no change in strength of the contractions could be detected.Procedure 3: Effects of Drugs Upon addition of epinephrine directly to the heart, the contraction rate showed a considerable increase in frequency. The strength or magnitude of each contraction also significantly increased as the heart actually was lifting itself off of its resting place. Exposure of the heart to acetylcholine had clear effect on the heart as well. A substantial decrease in heart rate was noticed upon exposure; however the magnitude of contraction seemed to remain somewhat constant.Addition of Atropine to the heart resulted in an increase in heart rate. The magnitude of each contraction showed a minor, but noticeable, increase in strength. A calcium solution was applied to the heart and showed a mild increase in contraction rate with the magnitude of each contraction seemingly remaining constant. The addition of both nicotine and caffeine had negligible effects on the rate or strength of heart contraction. Table [ 1 ]. Applied Chemical and Its Effect on Heart Contraction Rate and Strength Chemical| Heart Rate| Contraction Strength| Normal Ringers| Control Rate| Control Magnitude| Cold Ringers| Decrease| No change| Epinephrine| Increase| Increase| Acetylcholine| Decrease| Slight Decrease| Atropine| Increase| Increase| Calcium solution| Increase| No change| Caffeine| No change| No change| Nicotine| No change| No change| Procedure 4: The Refractory Period of the Heart Upon exposure to a mild electric current, the heart rate was altered from the normal resting heart rate. While it definitely slowed, the contractions were sporadic at best.The heart lost its regularity and showed random contraction intervals, some ranging shorter than normal while others had greater time gaps between contractions. Procedure 5: Effects of a Ligature on the Heart After the knot had been tied around the AV groove, no noticeable alterations were noticed to heart contraction. Upon tightening of the thread however, the heart appeared in clear distress. Beat irregularities ensued with an increase in magnitude of each pulse. The heart cease d functioning before the allotted time period had elapsed.Discussion Procedure 1: The Heart Rate The resting heart rate of the frog was perfectly normal. Steady, rhythmic contractions around 60 beats per minute were observed and used as a baseline for other experiments. The frog appeared healthy, showing no signs of beat irregularities or any other defects that may have impacted the experiment’s validity. Procedure 2: Effects of Cold Temperature The slowing of the heart in the presence of chilled Ringer’s solution was to be expected.All metabolic processes decrease in all cells upon exposure to cold due to the nature of chemical interactions. In the case of the frog heart, the cold solution probably decreased the rate at which calcium channels were able to open and thus, decrease the rate at which contractions were likely to occur since calcium entry to the cytosol initiates the cascade of reactions that leads to muscle contraction. Thus, the experimental hypothesis wa s correct given that the rate at which the heart contracted decreased and the magnitude of each contraction also lowered.Procedure 3: Effects of Drugs Exposure to epinephrine increased both the rate and strength of each muscular contraction as was expected. The heart contains many adrenergic receptors which are responsive to epinephrine, especially near the SA node, which initiates the contractions of the heart. Epinephrine acts to increase the release time of calcium from the sarcoplasmic reticulum via a cascade of reactions. The fact that epinephrine had a positive impact on the heart indicates that the heart was healthy and responsive to normal physiological chemicals and pathways.Addition of acetylcholine predictably lowered the heart rate of the frog. Acetylcholine blocks the cAMP cascade pathway that ultimately leads to calcium release, thus the frequency at which calcium is released is lowered and as a result, the contraction rate follows suit and lowers as well which is what you would expect from a fully functional heart. This part of the experiment was a success. The presence of Atropine, a parasympathetic system inhibitor, acted appropriately and increased the heart rate of the frog.The parasympathetic and sympathetic nervous system act antagonistically to one another and as a result, decreased activity in one serves to act as if an increase in the other had occurred. Addition of Atropine, in effect, should have had similar effects as the addition of epinephrine which it did. Exposure resulted in an increase in the rate of contraction and a mild but noticeable increase in the strength of contraction compared to the resting heart rate and magnitude which was what the response was predicted to have been.Neither caffeine nor nicotine had any visual effect on the hearts rate or strength of contraction. This was expected as both of these chemicals exert their effects by activating the release of neurotransmitters and hormones in the hypothalamus, specific ally epinephrine, which then affects the heart. Because these tested chemicals were applied directly to the heart and not placed in the bloodstream where they could produce an indirect effect, it is reasonable that no effect was noticed from the heart upon exposure to these chemicals. Procedure 4: The Refractory Period of the Heart The SA node is the pacemaker of heart.It is produces electrical currents that travel to the AV node and through the Bundles of His and the Purkinje fibers and stimulates the cells of the atrium and ventricles to contract. This is electrical conduction that is carried through gap junction of the intercalated disks separating heart cells and thus it is reasonable to infer that applying an electric current directly to the heart would interfere with the steady, rhythmic contractions normally observed in a healthy, undisturbed heart. Accordingly, as we applied a current to the heart, the cyclic contractions of the heart became erratic and unpredictable.No stea dy pattern was detectable in the muscular contractions. Some had longer periods between contractions while others had shorter time gaps between beats. This was expected as the heart would be receiving constant signals to contract along with the rhythmic electrical signals from the SA node itself and would result in interference and overlap of contraction signals which is exactly what was observed. This leads us to believe that both the electrical apparatus and the heart were working exactly as designed. Procedure 5: Effects of a Ligature on the HeartAfter placing the thread around the AV groove and tightening, the heart was clearly under a great deal of strength. Both the anterior and posterior segments of the heart swelled considerably, no doubt as a result of restriction of blood flow and buildup of pressure within the atriums and ventricles themselves. The AV node is a particularly sensitive portion of the heart to constriction as blood flow through the heart itself occurs at thi s junction. The heart contraction magnitude increased considerably while the contraction rate decreased substantially.Over the course of time when the thread was tightened, the heart appeared to get weaker and weaker until it finally gave out itself. Using the electrical apparatus, we tried to revive the frog and succeeded, however, a steady and consistent heartbeat was never again established and was much weaker and slower than before the thread was utilized. This indicated that heart damage had occurred and it was unlikely that any more significant and reliable data could be obtained from the frog’s heart and the experiment was finished as a result.Overall, the experiment can be considered a success as the appropriate responses to all the varying conditions were observed. While the experiment can be considered a success, the conditions with which the experiments were carried out were far from ideal. The experimental apparatus used was sufficient but hardly the equipment of choice. Far from accurate and precision, as well as the lack of ability to export numbered data from the labs computers, it is difficult to really analyze the data and produce concrete results that reflect the true magnitudes of effect each experimental variable had on the heart.

Educational technology Personal Statement Example | Topics and Well Written Essays - 500 words

Educational technology - Personal Statement Example Whether a person achieves a good learning experience or not is determined by the factors that affect the employment or administration of teaching, since educational tools are normally tangible and are readily accessible by students with whom a specific knowledge or training is communicated. At this stage, the widespread technology logically plays the key role in educating people, for the modern age has proven to have used and modified technology in almost everything that drives our living. Having obtained an academic background in clinical nutrition, I have realized how important health is for people to be able to execute tasks effectively, as well as for them to live life to the full measure. Helping people become better in terms of proceeding with personal growth and aspirations despite all the risks constitutes my passion. Equivalently, I suppose that this goal even extends to concerns with education and technology, much as it applies well through nutrition and health. I believe that every individual has the right to proper education which is conducted with appropriate materials, instructions, and especially technological resources everyone must gain access to, so that learning comes with ease and may be sought to enhance the studying capacity of each learner. In meeting this objective, hence, educational technology may be claimed highly necessary for students to figure different areas of improvement once they can afford to incorporate technology in the realm of ed ucation. Educational technology, alternatively known as e-learning, instructional technology, or learning technology, pertains to the use of technology to aid learning with sufficient input, and an academic institution bearing a competency-based curriculum can undoubtedly support students who aim to pursue career with educational technology. My desire to continue such studies with Concordia University

Philosophy - Peter van Inwagen Essay Example | Topics and Well Written Essays - 2000 words

Philosophy - Peter van Inwagen - Essay Example Without this attraction, the world would spiral to a halt, and the seemingly expansive choice in orientation would ridicule not just the concept of marriage but the process of evolution as well. Even if morals were expelled momentarily while this belief was expounded, it would simply transpire that the belief itself is self-explanatory, the consequence of straight attractions would always augment in favor of humanity. Maria on the other hand is of the impression that choosing a sexual partner is not a matter of naturalism as dictated by society but what occurs naturally within one’s own mind. The choice of orientations being given to an individual of sound mind and conscious decision-making prowess allows one to hold the self as the profound dictator of one’s own desires. It negates societal stigma and in itself forms the belief that the preference of orientation should be the choice of the individual and not the choice of the State. Maria’s belief is in itself t he reason of her belief. 2) I reject the notion that even though equally strong positives and negatives of pertaining to a strict orientation dictated by society exist in the real world, I should not believe in the fact that one orientation should be deemed natural and the others unnatural. It is true that the minority of cases of same sex marriage that surfaced in California right after the law was passed do pertain to a suppressed sociological regime that exists within the murky shadows of society, it does not acknowledge the fact that personal inclinations are not exactly the best form of judgments for the entire society. Consider the use of drugs, for example. While it is evident that the proliferation of drugs is a crime worthy of... The researcher of this essay expresses his belief on sexual orientation and states that sexual orientations should not be debatable and an indelible structure should be adhered to that surpasses all individual desires in favor of what is natural and readily admissible by a given society, in lieu of personal inclinations that give rise to stigmas and increased controversies. This belief was held based on evidential consequences of unnatural mating. Indeed, being straight is a recognized normality in the world of today and could be deemed a consequence of determinism. However, with the increasing span of global human rights surpassing sovereign state laws and personal inclinations of societies, and in the same way the citizens of the United Kingdom may adhere to the European Court of Human Rights to address domestic issues, a citizen of Massachusetts may be able to contract and perform a marriage with his lover of the same sex. However, seeing as how unnatural and seemingly undesirable the concept of same sex marriage appears to the researcher, he can adduce to my belief the fact that the majority of Americans are still in opposition to the legalization of gay marriage. Both beliefs can be deemed as right even though both carry their own insight and consequently their own conclusion which is why they co-exist concurrently, giving ample credit to the notion that both sides are equally weighty. However, it is true that science may allow human cultivation to reach new proportions of control over the upcoming population.

Employment law Uk Essay Example | Topics and Well Written Essays - 1500 words

Employment law Uk - Essay Example Under that subsection once the employer has shown that the reason for dismissal was redundancy the determination of the question whether the dismissal is fair or unfair is determined by the Tribunal and takes into account whether in the circumstances (including the size and administrative resources of the employer's undertaking) the employer acted reasonably or unreasonably in treating it as a sufficient reason for dismissing the employee in accordance with equity and the substantial merits of the case. Following the business reorganisation in March 2005 L claimed it genuinely needed to make 3 members of staff redundant. The employer merely has to show that there is a good business reason for the reorganisation and that it will result in a strengthening of the business: Hollister v National Farmers' Union [1979]. Although this case falls under the 'other substantial reason' head the fact that the National Farmers' Union (NFU) reorganised its insurance business to benefit the running of the business was held to be a 'good business reason' to dismiss an employee who would not accept the variation in his contract terms. "it is possible for an employer to use such a situation as a pretext for getting rid of an employee he wishes to dismiss. It is for the tribunal in each case to see whether on all the evidence, the employer has shown them what was the reason for dismissal." L has admitted that M was dismissed due to her sickness record, and not simply because of the need to reorganise the business. Where an employee has a long-term health issue which effectively frustrates the contract, it is possible to legitimately dismiss him/her provided there has been a fair review of attendance record and appropriate warnings have been given: International Sports Co Ltd v Thomson [1980]. Whether the dismissal is 'fair' turns on the interpretation of s98(4) of the ERA 1996. In Iceland Frozen Foods v Jones [1983] Browne-Wilkinson J said: "there is a band of reasonable responses to the employee's conduct within which one employer might reasonably take one view.If the dismissal falls within the band the dismissal is fair." On the facts L has made no attempt to address M's sick

Identify Books Essay Example | Topics and Well Written Essays - 750 words

Identify Books - Essay Example Baker, B. (2004). Anna's Book. Dutton Title: Anna's Book Author: Barbara Baker Illustrator: Catharine O'Neill Publisher: Dutton Publication Date: 2004 Appropriate Age of Grade Level: Ages 1-3 Possible Lesson Connection: This book is a good way to teach children the value of reading. Summary: Short but satisfying, this small story is about a toddler named Anna who just loves her new book: "Again," she says, as soon as Mommy has finished reading it. But after Mommy has read the whole book three times, she has to finish and do other things. Luckily, Anna has Teddy Bear to read her book to. "Again," says Teddy Bear Browne, A. (1989). Like Books. Knopf. Title: Like Books Author: Anthony Browne Illustrator: Anthony Browne Publisher: Knopf Publication Date:1989 Appropriate Age of Grade Level: Ages 2 and up Possible Lesson Connection: This books can be used in discussions about alphabets and nursery rhymes as well as in developing the creative skills of children through coloring. Summary: A young chimp winsomely embodies his favorite types of books: carrying a basket of books dressed as Little Red (fairy tales), sitting on letters made of books (alphabet books), reading aloud on a wall to a nervous Humpty Dumpty (nursery rhymes) and most memorably, only partially colored in (coloring books.) The pages are framed with appropriate whimsical motifs. Parr, T. (2005). Reading Makes You Feel Good. Little Brown Title: Reading Makes You Feel Good Author: Todd Parr Illustrator: Todd Parr Publisher: Little Brown Publication Date: 2005 Appropriate Age of Grade Level: Ages 1 to 4 Possible Lesson Connection: This book is suitable for discussions regarding the value and importance of reading. Summary: Parr brings his usual exuberantly positive attitude to this paean to... Summary: Parr brings his usual exuberantly positive attitude to this paean to reading. Reading makes you feel good because... you can learn how to make pizza, find your favorite animal at the zoo, or make someone feel better when they're sick (by reading Parr's The Feel Better Book of course.) Best of all, you can do it anywhere: in a bathtub, or a bookmobile, or even underwater, if you're an octopus! Summary: "Hello" and "Good-bye" seem like very ordinary words, but as this book shows, each can be meaningful in many different ways. As the text makes simple comments, small, colorful watercolor and colored pencil illustrations depict some of the many meanings of the words and the many different ways they can be said. Summary: An all-too-human mouse takes readers on hilarious adventures with numbers and letters in these captivating concept books. In Mouse Letters, he doggedly creates the entire alphabet out of sticks, despite misadventures with a collapsing K and a top-heavy T.

Language and nonverbal communication in a problem solving task Essay

Language and nonverbal communication in a problem solving task - Essay Example Communication is a two-way process. There are two roles in a communicative act, the speaker or the sender of the message and the receiver or the audience. Without the speaker, there is no one to pass on the message. Without a receiver, there is no one to accept the message. The speaker and the receiver then is the key element to a successful transmission of message. Verbal communication focuses on the use of the spoken language. Whether one is in a face-to-face dialogue or in a limited communication, spoken language is an essential in conveying the message. Speech is needed to communicate a message, especially in limited communication. Non-verbal communication is used to emphasize the message conveyed. It evokes images and translates the spoken message into pictures and descriptions. The process and method of communication affects not only the verbal part of the communicative act but also the non-verbal part (Bavelas, et.al. p. 22). The concept of the working memory, thus, is important in understanding how speech and gestures are used in communication. Humans have a working memory, by which it is described as the perception and the knowledge, whether stored or new knowledge, that our minds have the capacity to store (Logie, p.2). This offers a conceptualization of how language, speech and gestures are used in a communicative act. Whatever we have stored in our minds, that is what the speaker and the receiver processes in order to understand the message transmitted. Context plays a big part in communication as it determines how the message is to be understood and is understood by the communicators. In face-to-face interaction, a comprehensive communicative act by which both spoken language and gestures are simultaneously used in order to better convey the message. Bavelas and Chovil (p.164) suggests that communication processes should consider the concurrent use of both the audible and the visible

Cadmium in Shellfish Essay Example | Topics and Well Written Essays - 1500 words

Cadmium in Shellfish - Essay Example The figures for both types of shellfish was well within the tolerable limits at 7 g/kg body weight for adults as per WHO and Australian guidelines. Nevertheless, since there was observed high standard deviation among the scallop samples and there was also high deviation between the scallop and mussel cadmium/body-weight ratios it has been suggested that a future experiment be conducted during which the origin of the two types of shellfish be ascertained first to ensure that water contamination levels for both types of shellfish are the same. This shall ensure better conformation among the results. Correlation analysis was not conducted because of the small number of samples. This too should be rectified in future experiments to ascertain how each type of shellfish responds to the same level of cadmium contamination in the water. Thus, the report finds that it is highly essential to ascertain contamination in particular harvesting areas so that only those areas from where the bivalves have tolerable metal contents can be allowed harvestable. Other non-conforming areas should be declared out-of-limits. Only this can assure safety in supply. Cadmium is a heavy metal that is commonly found in many types of soil and rocks. At birth, primates like humans have no cadmium in their bodies but, with age, some humans induct the metal from their environment. The metal is a contaminant and classified as possibly carcinogenic under World Health Organisation (WHO) guidelines (CHEC, Cadmium, 2007). The metal is variously used in industrial applications and commonly found in everyday use objects like paints, plastics, some types of coatings, batteries and other electrical components (CHEC, Cadmium, 2007). The metal is also let out into the atmosphere from burning fuels, especially fossil fuels. It is present in rubber tires and is emitted when tires burn. Also, many industries let out the metal into the atmosphere trough flue gases (CHEC, Cadmium, 2007). Another significant source of cadmium contamination is tobacco smoke. Children are especially susceptible to the metal if they are near smokers (CHEC, Cadmium, 2007). Children also a re more prone to cadmium contamination because ration of the metal intake by body weight is much higher than in adults with larger body weight. Thus, more care has to be taken to preclude such contamination in children. Also, it is estimated that cadmium build-up in the body is faster in the early years than later if the individual is subjected to such contamination (WHO, Cadmium, Series 24, 1972). In this particular context it is noted that shellfish like mussels and scallops are bottom-dwellers and are non-mobile filter feeders (Moffett, 1993). In all likelihood, if the metal becomes evident in seawater, it settles down towards the bottom and the shellfish induct it into their systems. Since there is evidence that the metal is not easily evicted from organic tissues. Over time the metal may accrue in shellfish tissue and if these are ingested by humans poisoning may result if the metal levels in the tissue are

Corporate crime Essay Example | Topics and Well Written Essays - 2500 words

Corporate crime - Essay Example Most media are operating in a competitive business environment, and they constantly have to balance a need for authenticity and fact with a strong pressure to provide commercially attractive copy which tempts the reader to buy newspapers or tune in to radio television and web outputs. This paper examines the way that corporate harm is reported in the media, and asks who decides which stories are worth reporting, who provides the information which forms the basis of that reporting, and what effect the media have on public perceptions of corporate crimes. Media â€Å"framing†: who decides which crimes are reported in the media? It is generally recognised that although violent crime is relatively rare compared to other kinds of crime, it nevertheless dominates the media. A recent Australian study demonstrated that the general public has a tendency to overestimate the incidence of violence and underestimate other kinds (Indermaur and Roberts: 2005, p. 143) This observation was fou nd to be the result partly of individual experience of crime, in high crime areas at least, but also to do with the way that people utilize different kinds of media sources. Local news, for example, is a source of information for most working class people, while more educated people tend to read highbrow newspapers or internet news for their information on crime. It seems that people choose to view media which echo their own views of crime, and this creates a growing tendency to focus on sensationalism and crime, rather than a more balanced and accurate range of offences. Similar results were found in an earlier American study of police, newspaper, television and public images of crime trends for the seven FBI index crimes in the United concludes that people are increasingly dependent on television, rather than newspapers, and that the condensed timescale of television news bulletins results in distortion: â€Å"Hence, there is an emphasis on soft (scheduled) news – the huma n interest story – rather than on hard news – crime events †¦ Therefore, there is a focus on homicides, fires and accidents.† (Sheley and Ashkins: 2009, p. 494) Corporate crime is rarely reported in local television and newspaper media, and it is likely that these media lack the resources to pursue major investigations, and these crimes are in any case deemed to be less newsworthy in culture that is seeking attention-grabbing drama rather than sober analysis. Some British analysis goes further than this and claims that there is an orchestrated effort going on to make sure that individuals who commit violent crime are more often reported than companies and their managers who commit white collar crime including all sorts of quite serious failings which can even result in death and injury to many people. Tombs and Whyte (2007: p. observe that corporate safety crimes are largely â€Å"invisible†, partly because they are not widely reported, but partly als o because governments and commentators so often redefine corporate safety crimes as â€Å"infringements† and many statistics do not formally record the deaths and injuries that occur in an occupational context as crimes. The vocabulary used to comment on this area of criminal activity reveals a downplaying of responsibility and a reference instead to â€Å"accidents†, which implies that no-one is to blame: â€Å"

Apology Essay Example | Topics and Well Written Essays - 1250 words

Apology - Essay Example Yet another account of the trial is given by Aristophanes, a comic playwright. The philosopher was a member of the sub-council – the Council of Five Hundred – that ruled over the Assembly. His morals, way of thinking did not create much of a fuss at first. He did all that he thought was right, nothing more and then a time came when Athens was under attack and Sparta won the battle. The Greeks were humiliated and angry, especially when Socrates did not seem to approve of their form of government. He was considered as a critic of the then governmental system of Greece and due to this and other things he was accused against, he was put on trial by Anytus, Lycon and Meletus – the latter being the prosecutor who was mostly responsible for putting Socrates on trial. "Socrates does injustice and is meddlesome, by investigating the things under the earth and the heavenly things, and by making the weaker speech the stronger, and by teaching others these same things" (Plat o, West and West 66). The above were the charges placed against Socrates and he had to plead innocent or guilty for them. In simple words, Socrates’ thoughts were not similar to the thoughts the Greeks generally had. He believed that the gods knew everything, were present everywhere, one could not hide anything or anyone from them. The majority of the Greeks thought that the gods were partially present, that they knew some things and remained unaware about others. Their concepts of gods was different and it was not that much of a problem until Socrates actually refused to follow an order regarding to agreeing to allowing something illegal to happen. He had taken a vow and believed that the gods would know he had done wrong and for this he was being put on trial, for going against what they thought was god’s will when, in fact, it was just their own. The wording of this charge of impiety makes one assume that Socrates did not believe in the gods which were worshipped by the people of Athens, but also that he did not believe in the authority of gods at all. When, in fact, that was not the case and Socrates proves them wrong at several points in his apology. Socrates relates an incident in which Chaerephon, a friend of his and also quite a famous personality in the city, went to the Oracle of Delphi and actually questioned whether anyone was wiser than Socrates and the reply was in negative. The philosopher believed this to be a paradox in itself since he did not consider himself to be the wisest person, but thought it to be true, too, so he spent his entire life trying to prove the Oracle of Delphi correct. On questioning a few of the prominent Athenians who were thought to be wise, Socrates only managed to conclude that, indeed, he was the wisest of all of them. This was because he was aware of the fact that he was still ignorant of many things of life, whilst the others thought they were intelligent enough, they did not think that there might be room for further improvement, etc. and that was the paradox itself. The fact that he knew he was ignorant and the others did not proved that he was the Oracle was right. This point did seem to humiliate the respected men and only managed to turn them against him though. But it also shows that Socrates wanted the Oracle to be right and if he

City Life Essay Example for Free

City Life Essay Hello! I have a request for you to give me a feedback on my essay. Thanks in advance. Essay on city life see more:city living vs country living The migration from the countryside to city areas is merely a new phenomenon. This is a historic transformation on a global scale that consists of village culture being rapidly replaced by urban culture. Nowadays more than half of the worlds population lives in the cities. The majority of the people migrate of the better employment opportunities, the medical and educational facilities but there are also other reasons like the fun attractions of city life. City life is far more interesting and appealing to young people than rural life with its theaters, cinemas, night clubs, restaurants, shopping centers, places where you can practice some sport and get a professional to help you out with it and all sorts of other things you can imagine. Nevertheless urban life has its disadvantages too.Those ensue from the fact that inevitably life becomes more and more rapid in the city and that results in the way people act. They walk through life hurriedly without noticing the important things in life that are family and nature. They become more and more distant and loose their way to nature which leads to more and more medical conditions ensued by withdrawing from nature. Life in our cities will become more perturbed in the future. The main problem will be overpopulation therefore the streets will become crowded with people, it will take hours to get anywhere. Even if the traveling issues are solved overpopulation will result in many homeless people because there isnt enough space for everybody even if skyscrapers are built to the sky. Other than that new technologies will develop even more and make life easier than today. In conclusion city life is very appealing but its developing rates are harmful for mans survival and future. Future generations will have to solve this problem.

Economic freedom Essay Example for Free

Economic freedom Essay Does economic freedom help explain why the standard of living improves in some countries and declines in others? First of all we have to understand, what economic freedom is? Economic freedom according to William W. Beach and Tim Kane, PhD. â€Å" Economic freedom is that part of freedom that is concerned with the material autonomy of the individual in relation to the state and other organized groups. An individual is economically free who can fully control his or her labor and property. † (Taken from 2007 Index of economic freedom chapter no.3 by William W. Beach and Tim Kane, PhD). Or in simple words we can also say that everybody in his or her own country is said to be economically free, if their respective government protects their rights in every possible way and without any constraint. i.e. if an individual wants to learn anything, to do any kind of business or wants a job, then, he or she has a right to do that, while it is the responsibility of the government to make it convenient and possible for them. The first study of economic freedom was published in the year 1995, and it was improved over the years. There are about ten different types of economic freedoms, which are known as index of economic freedoms. The main purpose of defining these freedoms is to rank the countries in order to pave the way for foreign investment. Following is the list of ten economic freedoms: (taken from 2007 Index of economic freedom from chapter no.3 by William W Beach and Tim Kane, PhD). 1) Business freedom: To check the status of starting, operating and closing any business in how much time. 2) Trade freedom: To check the barriers and constraints in tariffs, import and export in the country. 3) Monetary freedom: To check the measure of price stability and how governments are controlling the prices, inflation etc. 4) Freedom from government: To check either state is providing public goods with minimum expenditure or not. 5) Fiscal freedom: To check the burden on the government with respect to revenue side. 6) Property rights: To check whether the public have keeping the private property rights, defined and secured by the laws, and are clearly defined by the government. 7) Investment freedom: To check whether the government deserves to have the foreign investment or not. 8) Financial freedom: To check the operation of financial institutions i.e. banking systems; are they out of government control or not. 9) Freedom from corruption: To check the status of corruption in the society, i.e. in the business system, judiciary, and administrative system in the country. 10) Labor freedom: To check the status of growth of labor and business either they are working without government interruption or not. (Taken from 2007 index of economic freedom from chapter no.3 by William W Beach and Tim Kane, PhD). Each one of the ten freedoms is measured on a 0-100 percent scale, 100 as the maximum freedom while 0 is the least or minimum freedom. The study of economic freedom was conducted on about 157 countries of the world. To show how it works, I choose two countries that are North Korea and South Korea. North Korea has a communist form of government and is ranked at no.157 in the index of 157 countries, its economy is 3% free. It has exports of $1.3 billion, it exports: minerals, metallurgical products, manufacturing (including armaments), textiles, fishery products etc. and imports of   $2.3 billion, it imports: petroleum, coking coal, machinery and equipment, textile grains etc. In communist form of government every asset in the country belongs to the state, therefore there is no business freedom i.e. 0 % (in 0-100 % scale) in N. Korea. Also government controls all the imports and exports so trade freedom i.e. 0 % is also nil. No data on income or corporate taxes is available so fiscal freedom i.e. 0 % is also zeroed. Also government owns all the property including businesses therefore freedom from government i.e. 0% is also nil. No publicly record of inflation data therefore monetary freedom i.e. 0% is also zero. Also no private financial sector, therefore financial freedom i.e. 0% is also nil. Wages and incentives are also controlled by government therefore labor freedom i.e. 0% is also nil, also corruption is heavily present in the country so corruption freedom i.e. 10% is also negligible, but there is some investment freedom i.e. 10%, after the opening of foreign investment zone in the far remote area of rajin sonberg where basic facilities are also not provided till date. The government does not cover property rights i.e. 10%, so they are also negligible.   (Taken from 2007 index of economic freedom from chapter no.5). While South Korea has democratic form of government and it is ranked at no.36 out of 157 in the index of economic freedom, and its economy is 68.6% free. S. Korea has export of $299.2 billion, it exports: semi conductors, wireless telecommunication, equipment, motor vehicles, computers, steel, ships and petrochemicals etc. It has imports of $269.8 billion, it imports: machinery, electronics, electronic equipment, oil, steel, transport, organic chemicals and plastics etc. As South Korea has democratic form of government, in that form, the government tries every possible effort to please its citizens, therefore starting, operating and closing the business in that country is relatively easy, there is a lot of business freedom i.e. 83.1% present in the country. S. Korea as compared to N. Korea has good trade freedom i.e. 64.2% present but there are some restrictions in its some activities like import, non-transparent regulations and standards etc. S. Korea has high income tax rate of about 38.5% and relatively low corporate tax of about 27.5%, so we can say that it has a good fiscal freedom i.e. 0-100 bracket it has about 81% free. After the foreign investment promotion act of Nov 1998 the government opens the doors to foreign investment in almost every sector except media, electric power and some agricultural sectors, and also residents and non residents can now holds foreign exchange accounts, so there is a lot of investment freedom i.e. about 70% free. The private property right i.e. 70% is secure by the government; corruption i.e. 50% is present at some extent in the country. The labor i.e. 57.7% market is working under restrictive employment regulations due to which employment and production growth rate is very low. Government interference in private sector is negligible, so freedom from government is 81.5%. The government regulates the prices in some sectors like agriculture, telecommunication and other utilities, which monetary freedom 79%, the government in retained some ownerships, second largest domestic bank is under them, which makes the financial freedom about 50% free. (Taken from 2007 index of economic freedom from chapter no.5).   In short economic freedom in South Korea is much superficial than North Korea, and it is mainly due to democratic and communism forms of governments, democratic people are enjoying the fruits of freedom while others do not.

Domestication of Maize in Mesoamerica

Domestication of Maize in Mesoamerica One of the most basic needs of a human being is that of food. We most eat and drink to survive. Subsistence is a natural thought which consumes every modern humans day. What will I eat for breakfast? What will I take for lunch or will I eat out? Should I take something out for dinner or pick something up on the way home? All of these questions seem at times quite complicated, however are without a doubt, much simpler than what may have crossed the minds of prehistoric humans. Just as it is today subsistence was the center of each cultures world. Whether you were nomadic or sedentary each group of hunter-gatherers had to eat. It is the survival of these societies which allows us as archaeologists a peak into the past. The process of gathering enough food in which to obtain a sufficient amount of calories was first and foremost in everyday life. The process of domestication of certain plants eventually led to more nucleated settlements. Let us keep in mind Morgans theory of culture, if this is correct, that cultural progression is lineal; than it is safe to assume that the only natural progression for prehistoric humans was to transition from the hunter gather stage of obtaining subsistence to a more agricultural life style. One cultigen in particular was maize, now referred to as corn. In this paper an attempt will made to properly explain what maize is, how maize became a major staple in prehistoric peoples diet, and lastly how has maize been detected in Mesoamerica through evidence in the archaeological record. What is maize? It is a large species of American grass of the genus Zea (Z. Mays) widely cultivated as a forage and food plant; known as Indian corn (http://archaeology.about.com). Maize is a cultigen; this is a crop that cannot propagate in the wild without human intervention. Plant domestication can be defined as the human creation of a new form of plant, dependent on human intervention, harvesting and planting for survival. Maize has a distinct planting season, growing season, and harvesting season. There is a worldwide importance placed on corn. In the Western Hemisphere it is by far the most important human food crop (Beadle, 615). It is still the most important crop in all of Latin America. On a worldwide basis it is the third most important human food crop, with an annual production of some two hundred metric tons (Beadle, 615). When Columbus arrived from the Old World and stumbled upon this strange crop on the island of Cuba, essentially all major races of maize-some two to three hundred- were already in cultivation and had been disseminated from its place of origin, probably southern Mexico (which will be explained further in the paper), to mid-Chile in the south and to the mouth of the St. Lawrence River in the north. The passage below from a science magazine will further help explain the definition of maize. Corn, also known as maize (from the Spanish maiz) was first domesticated nearly 10,000 years ago from teosinte, a wild grass that looked quite different from our modern crop. Teosinte grew in Mexico and Central America as a bushy plant with many spikes, the precursor to our familiar ear of corn. The small teosinte spikes had only two rows of nearly inedible kernels, or seeds, each enclosed by a hard covering. These seeds separated individually at maturity and were dispersed widely. In probably less than a thousand years, the tiny spikes of ancestral teosinte transformed into larger ears with edible kernels that remained on the cob for easy harvest. How these dramatic changes occurred has been a puzzle for over a century. Geneticists are now convinced that humans living in the Balsas River region of Mexico were foraging teosinte seeds when they noticed rare aberrations-likely caused by random mutations-that increased spike size dramatically. Seeds were propagated from these bigger spi kes, and thus the remarkable events of domestication began. By studying the maize genome, researchers have now confirmed that mutations in single genes, such as Teosinte glume architectural (Tgal). Alter kernel and plant structure and that changes in many genes influence complex developmental traits, such as the time to flowering. As human populations migrated throughout the Americas, new varieties of maize were selected to grow in local environments. Some varieties were maintained as so-called landraces, each growing in ecological niches in Mexico and South America. Now, these varieties and landraces hold a wealth of genetic diversity, which is being tapped for both basic research and as traits for crop breeding(http://www.sciencemag.org/products/posters/maize_poster) How did maize become a major staple in prehistoric peoples diet? Where there other uses or maize other than subsistence? New research shows that there is unequivocally four major independent centers of plant domestication; the Near East, China, Eastern North America and Mesoamerica. (Smith 1989: 1566) The Americas is believed to provide the clearest record there is of agriculture origins anywhere in the world, providing new understanding of the process involved in this key transformation in human history. However, the process is believed to have started in Mesoamerica. Maize has many uses; food, feed for live stock and energy for industries. As a food, the whole grain, either mature or immature, may be used; or the maize may be processed by dry milling techniques to give a relatively large number of intermediary products, such as maize grits of different particle size, maize meal, maize flour and flaking grits. (http://fao.org) These materials have a significant number of applications in a large variety of foods. Maize grown in subsistence agriculture continues to be used as a basic food crop. In developed countries more than 60 percent of the production is used in compounded feeds for poultry, pigs and ruminant animals. In recent years, even in developing countries in which maize is a staple food, more of it has been used as an animal feed ingredient. High moisture maize has been paid much attention recently as an animal feed because of its lower cost and its capacity to improve efficiency in feed conversion. The by-products of dry milling include the germ and the seed-coat. The former is used as a source of edible oil of high quality. The seed-coat or pericarp is used mainly as a feed, although in recent years interest has developed in it as a source of dietary fiber (Earl et al., 1988; Burge and Duensing, 1989). Wet milling is a process applicable mainly in the industrial use of maize, although the alkaline cooking process used in manufacturing tortillas (the thin, flat bread of Mexico and other Central American countries) is also a wet milling operation that removes only the pericarp (Bressani, 1972). Wet milling yields maize starch and by-products such as maize gluten, used as a feed ingredient. It is this flat bread or tortilla that is speculated to have been used in pre-historic times. This is not the tortilla that we think of today, however, the basic concept is rudimentary and could have been used even 10,000 years ago. George W. Beadles research shows that the probability of maize being similarly used as what we refer to as popcorn is high. This high probability points to the use of teosinte, which has been argued among scholars as an un-usable product, therefore not an ancestor of maize. Beadles research has proven that even the triangular kernel of teosinte could have been heated on heated sand, hot rock or fire and would have popped. There is speculation that in prehistoric time, maize had a religious and ceremonial purpose. It is written that in the height of the Incan empire maize was used in ritual and ceremonial gatherings in the form of beer. (Fernandez-Arnesto; 243) There isnt anything to indicate any different anywhere else that maize has turned up within the archaeological record. With a better understanding of maize and its possible functions, lets address where maize originated. Blake, Clark, Chisholm, and Mudar consider the transition to agriculture in the Formative period of coastal Mesoamerica (from approximately 1500 B.C. to the birth of Christ), specifically along the Pacific coast of Chiapas, Mexico. These scholars review the evidence from this area in terms of two competing hypotheses: the competitive feasting model of Hayden (1990) and the interaction of plants and humans as described by Rindos (1984) and Flannery (1986). MacNeishs work in the Tehuacan Valley has shown that the origins of maize and its integration into a system of agricultural production that included a variety of plants began as early as 7000 B.C. The earliest people to use and domesticate these plants were not sedentary, instead, they were nomadic foragers who incorporated these domesticates into a complex seasonal pattern of hunting and collecting (MacNeish 1967, 1972; Flannery 1968; Flannery 1986). It has been believed that from Formative times forward that maize is typically seen as the main staple crop in Mesoamerican prehistory. Agricultural advancement has long been thought of as the cornerstone of early sedentary village life and one of necessary conditions for the development of complex society (MacNeish 1972). Maize yields a high amount of caloric intake which is necessary in the process of sustaining the level of activity that prehistoric people in Mesoamerica needed to survive. A recent re-analysis by Farnsworth et al (1985) of archaeological data from the Tehuacan Valley, including a stable carbon and nitrogen analysis of the human skeletal remains, suggests that a heavy dependence on grains, including maize began as early as the Coxcatlan phase (ca. 5000-3000 B.C.). In Oaxaca, excavated macrobotanical remains show that domesticates, including maize, beans, squash, and avocados, were in use and consumed both before and after the appearance of the first sedentary villages (Flannery 1976, 1986). Kirkbys (1973) study of agricultural production suggests that the main staple, maize, was cultivated and relied upon from the Early Formative Tierras Largas phase (1400-1150 B.C.) onwards. She suggests, however, that maize did not reach a threshold of productivity, until about 100B.C. when larger varieties allowed greater yields per cultivated hectares of land. The assumption is that as maize cob size grew, and the plant became more productive, then early villagers c ame increasingly to rely on it as a subsistence staple. Both the Tehuacan and the Oaxaca data suggest that after agricultural products, particularly maize, became important in the subsistence system by the Late Archaic period, the trend towards increasing reliance on these plants continued through time. The movement of a relatively small amount of maize from established agro-ecology over long distances into a new environment is equivalent to an evolutionary bottleneck or a founder event (King, 1987; Mayr, 1963). Because only a small portion of the population is represented after one of these events, sampling error will result in, among other things, changed gene frequencies, breakdown of co-adapted gene complexes, and sometimes increased additive genetic variability (Cheverud and Routman, 1996). The above mentioned on page 2 and 3 of this paper attempted to explain the process of genetics when involved in the process of advancement of a plant. We can refer to this as agricultural evolution. Farming in modern day seems to be, from an outsider looking in; hard work, dirty work, and monotonous work. If with modern equipment farming is difficult what would it have been like in prehistoric Mesoamerica? Why farm at all? We look at hunting game now in present day society as romantic and sportsman like. There is a challenge to the game. There is fancy equipment purchased and well kept. Hunters tell stories that are passed on from generation to generation, hunting stories in prehistory had to be just as exciting and the stuff of which myths were made. So, again why farm at all? Many scholars have argued that without agriculture societies would not have existed. Only agriculture, with its pattern of population growth, urbanization, and economic surpluses has produced civilizations (Reed, 5). Thus helping to explain why agriculture led to complex societies. Varying conditions such as altitude, rainfall, soil, and seasonal temperature rand and latitudinal differences in the length of day during growing seasons led to the eventual diffusion of maize northward into North America, however for the sake of this paper the focus will remain on Mesoamerica. The research indicates that the evidence in the archaeological record states that the coastal areas show maize before any other area. Coe and Flannery until the 1980s were the only two researchers to report domesticates at Early Formative cities along the Pacific Coast of either Chiapas or Guatemala. Other than these few incidences relatively few sites have produced macrobotanical evidence of cultigens among their subsistence remains. Richard Scotty MacNeish conducts what he called the great corn hunt in 1958. MacNeish believed by tracking pre-ceramic caves in the southern part of Mesoamerica, namely, in the caves of Copan and the Comeagua Valley of Honduras he would have a better chance of tracking the corn (MacNeish 1962). His search extended to Zacapa Valley of Guatemala in 1959, as well having brief visits in Oaxaca and the Rio Balsas Valley of Guerrero. In 1961 MacNeish and his team started the Tehuacan project which yielded to be a great unbelievable success. Among many question with this project MacNeish and his colleagues were able to solve the problem of the origins of corn and were able to attack the how and the why of many other domesticated plants in highland Mesoamerica. According to MacNeish the amount of artifacts (50,000 lithics, more than 100,000 plant remains, over 10,000 bones and some 250 human feces) found in the 454 sites gave the team a time span that roughly stretched from 20,000 to 2000 B. C. Since MacNieshs research and excavations there have been over 1000 sites found and more archaeological evidence to support his original findings. In conclusion, the topic of maize is one that has intrigued and puzzled archaeologists for many years. The domestication and evolution of maize in and of itself causes much debate. It is because of great archaeologists like MacNeish and his unwavering curiosity of the great corn hunt as to why we have the information that we have today. The mere evidence of 454 sites becoming 1000 in a matter of years speaks for itself. The fact remains that there are 4 major independent centers of plant domestication, the Near East, China, North America, and Mesoamerica. It is the intent of this paper to have clearly introduced even the novice of persons to what exactly is the definition of maize, how maize became a major staple in prehistoric peoples diet, and how maize has been detected in Mesoamerica through evidence in the archaeological record.

lung cancer Essay -- essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  Lung cancer is the most common cancer-related cause of death among men and women. Lung cancer can be undetected for many years causing it to become more dangerous and possibly fatal. There is not cure for lung cancer or any cancer, but if detected in an early stage the lung cancer can be detected, treated, and hopefully terminated. There are many new and developing treatments being tested now that may save lives in the future. Through understanding what the lung cancer is, doctors can easily diagnose and assess cancer patients. Lung cancer takes many years to develop. The characteristics of lung cancer the same as any type of cancer but it effects the lungs. Lung cancer is caused by expose to carcinogens or cancer causing materials. After the carcinogens get into you lungs through breathing, the lining of your lungs will develop microscopic usual cells. If the exposure of the carcinogens to the cells increases, the cells will become more cancerous and will start to spread. Each infected cell will not do what it is suppose to do. This can limit the amount of air coming and going into your lungs, preventing the amount of oxygen that gets to your blood. Smoking is leading cause of lung cancer. Smoking causes more than 80% of lung cancer cases. When you smoke you are taking in more that 4,000 different chemicals, which are all proven to be cancerous. Even if you do not smoke you are still at risk for getting lung cancer. Second hand smoke is just as bad as smoking itself. Each of the harmful chemicals can still enter into non-smokers lungs when they are around smokers. Radon is also a leading cause of cancer. Radon is a radioactive gas that is invisible and odorless. Radon can be found in the surface of the earth. When people come in contact with radon it cause the same results as smoking, the cells be come usual. Thus leads to lung cancer. People can also come in contact with carcinogens while they are at work. Many cancer-causing chemicals can be found in the work place such as asbestos, uranium, arsenic, and petroleum. If you are exposed to these carcinogens for long periods of time, just like smoking or radon, you will develop lu ng cancer.   Ã‚  Ã‚  Ã‚  Ã‚  In the early stages of lung cancer it is hard to detect the cancer. The cancer is silent and can grow and develop for years undetected. When the few symptoms... ...t must be careful not to get too much exposure to bright light like sunlight. Many people develop temporary skin darkening, much like having a suntan. Pain is another side effect of PDT. As the diseased tissue breaks down, it causes inflammation, which can cause pain. Fortunately, the pain of PDT is usually mild and is easily controlled with a painkiller. Another side effect of PDT for lung cancer is shortness of breath. This is from the fluid buildup in the lungs after the treatment. It is also caused by the inflammation when the cancer is broken down and removed from the body. The good news about the side effects of PDT is that they are usually temporary. Although lung cancer is the most common form of cancer many new treatments, as well as old treatments, give lung cancer patients a chance at survival. There are many causes of cancer, mainly by being exposed to carcinogens. Most of these causes can be avoided. By understanding what causes lung cancer or even simply not smoking you can lower the chance of developing lung cancer. Through understanding what lung cancer is, what causes it, and how it is treated, patients can make the process of fighting lung caner an easier task.

marketing test :: essays research papers

Ch 5 Consumer behavior- Processes a consumer uses to make purchase decisions, as well as to use and dispose of purchased goods or services. 5 Steps to decision process- need recognition, information search, evaluation of alternative, purchase, post purchase behavior. Need recog- result of an imbalance between actual and desired states. External stimuli is a pic, internal stimuli is a past experience, good or bad. Recognition of unfulfilled wants- when a product isn’t performing properly, when consumer is running out of product, when another product is better than one being used. Info search- internal (memory) and external (tv). EVOKED SET (consideration set)- group of brands, resulting from an information search from which a buyer can choose. Evaluation of alternatives- rank attributes by importance, analyze product attributes, use cut off criteria. Post purchase behavior- Cognitive dissonance inner tension that a consumer experiences after recognizing an inconsistence between behavior and values or opinions. Consumers try to reduce dissonance by justifying their decision. Factors determining the level of consumer involvement- previous experience, interest, perceived risk of negative consequence, situation, social visibility. Underlying cultural, social, individual, and psychological factors strongly influence the decision process. Culture play deepest part of a persons consumer behavior, culture is pervasive, functional, learned, and dynamic, and the most defining element of a culture is values. Marketers are interested in social class for 2 reasons, Social class often indicates which medium to use for advertising, and knowing what products appeal to which social classes. Reference groups- a group in society that influences an individual purchasing behavior. Primary membership group- a reference group with which people interact regularly in an informal, face to face manner. Secondary membership group- A reference group with people associate less consistently and more formally that a primary such as a club, pro group or religious group. Aspirational reference group- A group that someone would like to join. Norm- A value or attitude deemed acceptable by a group. Reference groups have 3 implicatons- serve as info sources and influence perception, affect individual aspiration levels, their norms either constrain or stimulate consumer behavior. Ch 6 Business products- used to manufacture other products, become part of another product, aid the normal operations of an organization, are aquired for resale without change in form. Internet Marketing opportunities- increase efficiency, reduce cost, improve customer service, create 1to1 relationships, introduce new products, expand markets. Benefits of marketing on the net- lower prices, greater selection of products and vendors, access to customer and product sales data, around the clock ordering and customer service, lower cost, customized products.