Newtons Three Laws of Motion - 737 Words

Newton’s 3 Laws of Motion One of the most influential and top contributors to the world of physics to me is Sir Isaac Newton. Father of modern science, Sir Isaac Newton was born on January 4th, 1643 in Woolsthorpe-by-Colsterworth, United Kingdom and died on March 31st 1727, Kensington, London, United Kingdom. He was an English physicist and mathematician who formulated three laws of motion that help explain some of the very important principles of physics. Some of Newton’s laws could only be proved under certain conditions; but actual observation and trial experiments assured the validity of his work. According to Isaac Newton’s laws he tells us how objects move by describing the relationship between force and motion. The First Law of Isaac Newton’s laws of motion states that an object at rest will stay at rest until acted on by larger force. When the object is at rest it is called inertia. Objects in motion will stay in motion until stopped by a larger force. What this simply means is that an object will not move if an unbalanced force does not affect it. It also states that if the object begins to move, that the object will continue to move in the same direction until a larger force stops the object. Example if you were to put a dodge ball on a computer chair (roll able chair) and were to roll the chair the dodge ball and the chair would be moving in the same direction. If you were to stop the chair, the dodge ball would flingShow MoreRelatedEssay Sir Isaac Newtons Three Laws of Motion1373 Words   |  6 PagesWe have all heard the story of the apple falling on Newtons head while he was sitting against the tree, thus giving him the sudden idea for the Universal Law of Gravity. This, as I am sure most of us know, is not really what happened. A more accurate version would probably be, Newton observed an apple falling from a tree and started contemplating the physics of the apples fall. The acceleration experienced by the apple, which started at zero when hanging in the tree, then increasedRead More Newtons Three Laws of Motion Essay example516 Words   |  3 Pagesexperience each of Sir Isaac Newtons laws everyday. In a car, pushing a car, or even in a fight. All of these laws have to do with motion. You can experience the first law in a stopping car, the second when you are a pushing a shopping cart, and the third one in the water. Newtons first law in laymen terms is An object in motion tends to stay in motion, and an object at rest tends to stay at rest, unless the object is acted upon by an outside force. You would feel the law if you were in a fast movingRead MoreNewton s Laws Of Motion936 Words   |  4 PagesHonors Physical Science Level 1 18 October 2015 Newton’s Laws of Motion Newton s three laws of motion play a huge role in our everyday life; from driving down the road and catching a baseball. Newton’s laws help us fully understand gravity, motion, and force in three easy-to-understand laws. Newton’s first law of motion describes that an object in motion will stay in motion unless acted on by an outside force. Newton’s first law can also be called the law of inertia. This is true because inertia isRead MoreSir Isaac Newton s Three Laws Of Motion1163 Words   |  5 Pagesevents. With the help of Sir Isaac Newton’s three laws of motion, these events can easily be explained. Sir Isaac Newton’s three laws of motion are rules of nature which provide the means to see how so many aspects of life beautifully connect with one another. The first law consists of objects that are at rest remain at rest and vice versa for objects in motion. The second law relates to behavior of objects in which existing forces are not balanced. The third law consists of action-reaction. OverallRead MoreIsaac Newton s Three Laws Of Motion Essay1370 Words   |  6 Pagespenned his three laws of motion in his book, Principia Mathematica Philosophiae Naturalis. His first law states, â€Å"Every body perseveres in its state of rest†¦ unless it is compelled to change that state by forces impressed thereon† (Newton 1686, p. 83). As a result, his second law is built upon this principle, â€Å"The alteration of motion is ever proportional to the motive forces impressed† (Newton 1686, p. 83). Furthermore, Newton’s third law, perhaps the most famous, serves to tie the three conceptsRead MoreNewton s Laws Of Motion1490 Words   |  6 PagesMoore Physical Science L1 Newton’s 3 Laws of Motion 22 October 2015 Emma Trull Mr. Moore Physical Science L1 Research Paper: Newton’s Laws of Motion 22 October 2015 Newton’s 3 Laws of Motion Isaac Newton was a physicist and mathematician of the 17th century. Newton developed the principles of modern physics. He created the three laws of motion popular in the world of science and our daily lives (Issac Newton Biography). Newton’s first law states that an objectRead MoreThe Genius Of Sir Isaac Newton1687 Words   |  7 Pageshad its fair share of phenomenal scientists, but none can overshadow the genius of Sir Isaac Newton. Isaac Newton was born on January 4, 1643. His father died before he was born and he lived in Colsterworth in Lincolnshire with his grandparents and three siblings. Isaac Newton was know to be quite secluded as a young boy. Young Newton had a knack for model making and art, for example, he made a working model of a windmill at some point in his childhood. He also made other things such as dolls furnitureRead MoreBiography Of Isaac Newton s Life1274 Words   |  6 Pagesof science was born, Isaac Newton. He was born and raised in the town o f Woolsthorpe, United Kingdom. Born without a father and raised by his maternal grandmother after his mother left to remarry a wealthier man, since three years old, Newton lead an unforgettable childhood. Newton’s mother came back when her second husband died. His mother’s return in 1653 forced Newton to halt his education and take over the farm. Deprived of his mother’s love, Newton built a complex character. Failure to fulfilRead MoreNewton’s Laws of Motion in Modern Aircrafts1087 Words   |  5 Pagesprinciples behind how a jet-engine powered aircraft works associate with many laws of physics, from Newton’s Law of Inertia to the Third Law of Motion. These laws are also applicable to the aerofoil and the engines aerodynamically, in particular with the four forces: lift, drag, weight and thrust which allows an aircraft to maneuver across the skies. Firstly, back in 1687, Sir Isaac Newton discovered three different laws of motion. (Pople, S. 2010) If there is no external force action upon an object, itRead MoreIsaac Newton s Laws Of Motion927 Words   |  4 PagesNewton is one of history’s greatest scientists. Not only is he one of the most recognizable names in the field of science, but he also made many remarkable discoveries. A few of his most recognizable discoveries are the three laws of motion more commonly known as Newton’s Laws of Motion. Isaac Newton was a large part of the scientific revolution in the 17th century. Many say he was one of the greatest minds during that time period. Isaac Newton made amazing contributions to not only science, but also

Attention Deficit / Hyperactivity Disorder Essay - 1279 Words

Attention-deficit/hyperactivity disorder (ADHD) is the most common disorder in childhood, defined by excessive distractibility and lack of adequate attention. Diagnoses of hyperactivity in people (patients) has been documented for centuries by physicians and scientists. Although not defined as ADHD, the symptoms described in earlier generations have total similarities to the more scientific named disorders of ADHD in current times. A child who shows a pattern of inattention may frequently fail to pay attention to detail, make careless mistakes, have trouble staying focused, appear not to listen, trouble organizing simple tasks, be easily distracted, and display symptoms of forgetfulness. A child who shows a pattern of hyperactive and†¦show more content†¦Those possible causes and contributors are: †¢ Genetics. ADHD tends to be familial and runs in generation after generation. It is estimated that over 50% of ADHD children also had a parent that had ADHD whereas adults that never had the condition are far less likely to have a child that has the disorder. Study after study has proven this to be the case. Genetics rank as the leading probable risk factor associated with ADHD. †¢ Environmental. While not a proven cause, some research indicates environmental factors such as toxins and lead exposure may increase the risk. †¢ Developmental. Insufficient or flawed development of the central nervous system at key moments in development may also play a role in ADHD. ADHD is thought to be a gene related disorder that affects a region of the brain associated with motor skills and alertness and has been linked to decreased sensory processing abilities. Some classic ADHD symptoms include hyperactive conduct, impulsivity, and inattention. Over 1800 studies have been published to date about genetic factors and the role they may play in ADHD. These studies focused on family-specific groups as well as specific genes or genome-wide screenings and provided strong evidence that genes do play a role in susceptibility to ADHD. A 2009 review concluded that genetics accounted for over 70% of the risk factors involved with having or inheriting ADHD symptoms. ADHD is a heritable trait that affects more children and adolescents thanShow MoreRelatedAttention Deficit Hyperactivity Disorder Essay1325 Words   |  6 PagesAttention Deficit Hyperactivity Disorder is a condition that creates a great deal of discussions among professionals. There are numerous debates that surround this disorder. There are theory’s presented from each side about what causes it, how to asses it, and how to deal with it effectively. The first question needing answered is what is ADHD? ADHD is a set of behavioral problems revolving around three main symptoms. The chief symptom that a person exhibits is the incapacity to keep their attentionRead MoreAttention Deficit Hyperactivity Disorder (ADHD) Essay3219 Words   |  13 Pagesinattentiveness and hyperactivity in the classroom. I never had a problem with the work and I was always one of the smartest students in my class so my parents just assumed that I was a rambunctious child. My parents completely subscribed to the belief that â€Å"boys will be boys† and although I certainly was reprimanded for my behavior, the last thing to have crossed my parents’ mind was that this type of behavior was a symptom of a disorder. The disorder I am referring to is called Attention Deficit HyperactivityRead MoreAttention Deficit Hyperactivity Disorder Essay964 Words   |  4 Pages Attention Deficit Hyperactivity Disorder Attention-Deficit Hyperactivity Disorder (ADHD) is very commonly known. Today, ADHD is one of the most common mental disorders among children. The NIMH (The national institute of mental health) predicts that it affecting 3 to 5 percent of all children(AACAP), with an approximate amount of 30% to 65% of these children experiencing persistence of symptoms into adolescence and adulthood (AACAP).There are three types of attention deficit hyperactivity disorder;Read More Attention Deficit Hyperactivity Disorder Essay1367 Words   |  6 PagesAttention Deficit Hyperactivity Disorder â€Å"ADHD (Attention Deficit Hyperactivity Disorder) is like living in a fast moving kaleidoscope where sounds, images and thoughts are constantly shifting.† (NIMH-ADHD) ADHD can be very frustrating and difficult for children. Medication and treatment are available and have been proven effective. Parents can also get frustrated and they could do something wrong. ADHD is effectively treated with medication and therapy. There are three basic typesRead MoreAttention Deficit Hyperactivity Disorder Essay717 Words   |  3 PagesAttention deficit hyperactivity disorder is an inattentive disorder believed to begin in childhood continuing into adulthood with a possible change of having low self-esteem, troubled relationships, and difficulty in school or at work. At the age of five, I was believed to have this disorder because of my incapability to focus in circumstances such as when someone was speaking to me, when being taught an subject at school, and disability situations. Notwithstanding, I was told stories about how havingRead MoreEssay on Attention Deficit Hyperactivity Disorder and the Student3336 Words   |  14 PagesAttention Deficit Hyperactivity Disorder and the Student Attention Deficit Hyperactivity Disorder (ADHD) is one of the most common obstacles that some students face in the process of learning. ADHD is often confused with Attention Deficit Disorder (ADD). It is very important to understand the difference between ADHD and ADD. It is also very important to understand the symptoms and behaviors associated with ADHD, as well as the causes and treatments available. After a complete understandingRead MoreAttention Deficit Hyperactivity Disorder Essay887 Words   |  4 PagesAttention deficit hyperactivity disorder (ADHD) is a common childhood disorder that can continue through adolescence and adulthood. ADHD is characterized by difficulty staying focused and paying attention, difficulty controlling behavior, impulsive behaviors and hyperactivity. The symptoms of ADHD are grouped in three categories: inattention, hyperactivity and impulsivity. Symptoms of inattention present as being easily distracted, missing details, forgetfulness, frequent ly going from one activityRead More Attention Deficit Hyperactivity Disorder Essay1555 Words   |  7 PagesAttention Deficit Hyperactivity Disorder (ADHD) is a developmental disorder that displays as distracted, hyperactive, and unable to focus on tasks and activities. Also known as Hyperkinetic Impulse Disorder, Hyperkinesis, Hyperactive Syndrome, Minimal Brain Damage, Minimal Brain Dysfunction, and Undifferentiated Deficit Disorder, ADHD is the most commonly diagnosed neurological disorder in children. Although many children with ADHD are quite intelligent, their lack of focus can frequently lead toRead More Attention Deficit Hyperactivity Disorder Essay1520 Words   |  7 PagesAttention Deficit Hyperactivity Disorder / Personality? For a typical person with Attention Deficit Hyperactivity Disorder (ADHD) sitting down to do a task such as homework can be agonizing, the physical act of staying in place, being as difficult as concentrating on the work. The person with ADHD may go on in life to have social problems because symptoms such as hyperactivity, inattention, and impulsivity, are mistaken as laziness or self-centeredness (14). The problems of ADHD often developRead More Attention Deficit Hyperactivity Disorder Essay534 Words   |  3 PagesAttention Deficit Hyperactivity Disorder According to the National Institute of Mental Health, Attention Deficit Hyperactivity Disorder, or ADHD, is the most commonly diagnosed disorder among children (1). The disorder affects approximately 3-5 percent of children of school age (1), with each classroom in the United States having at least one child with this disorder (1). Despite the frequency of this disease in the United States, there still remains many discrepancies about the disorder

Video Games And Its Effects On The Classroom - 929 Words

As technology changes each generation, so does choice of pastime. The most notable one being a kid’s obsession with video games, spending hours glued to the monitor. Instead of fighting it, educators around the nation are accepting and adopting the video game interest to their classrooms. Many may argue that videogames are a distraction and are too violent, however, if implemented in school systems the games used will be safe and focused around the core subject. Otherwise, â€Å"there are teachers out there that are interested in leveraging game for learning, they re not alone.† as the director of the academic and digital learning Lucas Gillispie says, It makes it logical to implement video games to the class lesson as it provides a fun and effective way for students to learn with. One of the most popular game amongst young children, Minecraft, have already been implemented in many school systems nationwide. Minecraft is a digital lego like, sandbox game, meaning that t he player has complete freedom within that game world. Players manipulate the world around them through, as the game name says, mining and crafting. The game itself has an overwhelming amount of items mirror the real world with, giving Minecraft a high educational value to the point that it has it’s own educational variety, MinecraftEdu. According to the T H E Journal’s â€Å"4 Innovative Ways To Teach With Video Games†, their use of Minecraft was intentionally used as an after school program for at-risk students.Show MoreRelatedThe Impact of Technology1443 Words   |  6 PagesTechnology, mainly computers and video games, have made a vast difference in our society. Many years ago there were not very many forms of technology that existed. People often used type writers, went, dancing, did puzzle, and played board games for entertainment. Nowadays, the use of computers has become extremely popular. If an individual is not using a computer for some form on entert ainment, they are most likely using it for something along the lines of school or work. Technology has gone fromRead MoreUsing Video Games in the Classroom1407 Words   |  6 PagesVideo Games could be used in the classroom for a wide variety of different subjects, ranging from math, to science, to english and even in foreign language classes as many games that are made in different countries are in that countrys own language. Of Course games are almost always translated into different languages so that people worldwide could play them but a foreign language teacher wouldn’t find it too difficult to get ahold of a copy of a game in a foreign language. Music classes such asRead MoreVideo Games Helps Improve Education Essay1361 Words   |  6 Pages Video games has had a long history of being seen as a negative thing. It seems to be out of the question to use them in classrooms and as a teaching tool. This is the wrong way to look at them however. Video games may be one o f the best tools for classrooms and helping students learn not only school topics, but even help them with different skills in the classroom and to help them reduce one of student’s biggest issues; stress. All of these things can be done with the use of video games in theRead MoreThe Concept Of Video Games Has Always Been Entitled To1597 Words   |  7 PagesThe concept of video games has always been entitled to be a harmful tool for the younger audience, generally speaking about children. The scenario created doesn’t only affect the players, but also the surroundings due to the consequences, like fighting outside of the home. This happens because of the violent content and also the addiction and that causes in children. However, not all games are the same. From another perspective, it’s been proven that there’s a group who’s researching for the positiveRead MoreRationale on Effects of Playing Computer Games on the Academic Performance of the Stud ents1503 Words   |  7 PagesRationale and Importance Gaming in Education: What Students Can Learn From Video Games in School As new teachers enter the workforce with greater technology familiarity than their predecessors, a wider margin of accepted teaching methods has developed, changing the way in which educators are able to form successful instructional relationships with their students. Many districts, in order to help faculty keep pace with their rapidly changing and technologically capable student bodies, are attemptingRead MoreProblems Associated With Educational Video Games Into Their K 12 Curriculum982 Words   |  4 PagesUnited States to increase their worldwide K-12 educational efficiency ranking and avoid improper usage of such technological resources, school districts must perform a slow implementation of technological devices and their associated educational video games into their K-12 curriculum. Many of the problems associated with the LAUSD iPad Initiative could have been avoided if the school district tested the use of iPads on a few selected schools as oppose to immediately implementi ng the devices into everyRead MorePositive Impact Of Technology871 Words   |  4 Pagespositive effects, there can be a variety of negative as well. Wolpert explains â€Å"As technology has played a bigger role in our lives, our skills in critical thinking and analysis have declined.† Before technology, many people would read for pleasure, in recent years it can be shown that doesnt happen frequently. Reading for pleasure allowed to think more deeply and also enhanced the imagination in ways that technology can’t (Wolpert). Although there was positive impacts from video games, there wasRead MoreVideo Games Effect On Children1344 Words   |  6 PagesVideo games have been known to be a negative effect on children throughout the years. They have also been connected to violent behaviors. With this, games have been given a lot of negative light within the media, yet they are seen in a large amount of homes throughout the United States. Lately, computers and tablets have been introduced into the american school system given children even more access to video games throughout their day. This brings up the question if maybe using different games mayRead MoreDefining Learning And Funds Of Knowledge1562 Words   |  7 Pagesthat are embedded into the daily learning environment; these include all the practices and routines learned by the learners either in their families or classrooms. As a result, it is paramount for the parents, teachers, and the students to learn how funds of knowledge can be gathered and learned to benefit the both families and children in the classroom. Additionally, the learning and funds of knowledge approach are very crucial because it helps the teaching staffs to ensure that learners are undergoingRead MoreTechnology And Technology Essay1014 Words   |  5 Pagesthe pupils not understanding what they have read. The use of technology can have positive and negative results on student performance; researchers also have conducted many different tests and studies to see the impacts of the use of technology in classrooms. When using technology for learning, people have demonstrated positive results. The internet has given students exceptional results like, literacy advancements, easier access to information, and better motivation (O’Hara Pritchard, 2014, para

A Causative Agent of Food-borne Poisoning Free Essays

Bacillus cereus is an aerobic and facultative anaerobic, gram-positive bacteria causing toxin-mediated food poisoning. Optimum temperature for its growth is 30-37Â °C. However, it can also tolerate a wide range of temperature; some strains can grow up to 55Â °C while others can grow at temperatures as low as 4 to 5Â °C (Microbial Pathogen Datasheets, 2001). We will write a custom essay sample on A Causative Agent of Food-borne Poisoning or any similar topic only for you Order Now Many strains from dairy products are able to thrive at lower temperatures. The minimum pH requirement for growth is 4. 3, while maximum pH is around 9. 3. This bacterial population grows best in the presence of oxygen (Microbial Pathogen Datasheets, 2001). Nevertheless, since this species is facultative anaerobic it also grows well in anaerobic conditions (Louisiana Office of Public Health, 2004). Toxin production has been found to be much lower under anaerobic conditions. Bacillus cereus is a spore-forming micro-organism which occurs naturally in most foods. It causes two different and distinct forms of food poisoning: an emetic illness and a diarrhoeal illness (Louisiana Office of Public Health, 2004). Bacillus cereus causes food-borne emetic illness by producing a highly stable toxin that survives high temperatures and exposure to trypsin, pepsin and pH extremes. Bacillus cereus levels in foods associated with emetic form of food poisoning have ranged from 1,000 to 50 billion colony-forming units (cfu)/gram (Louisiana Office of Public Health, 2004). High numbers of bacterial population have been also detected in faecal samples from affected persons. Diarrhoeal illness is mediated by a heat- and acid-labile enterotoxin produced during growth of vegetative cells in the small intestine (Granum, 1994). Four different enterotoxins have been characterized. Two are protein complexes such as non-haemolytic enterotoxin (NHE) and haemolysin BL (HBL) and two are enterotoxic proteins such as enterotoxin T (bc-D-ENT) and cytotoxin K (Lund, DeBuyser Granum, 2000). The occurrence of the diarrhoeal-type syndrome has been largely reported in the US and Europe, where the disease has been greatly associated with foods such as meat, vegetable, poultry, desserts and sauces (Giannella and Brasile, 1979). Prevalence of the vomiting type syndrome has been reported in the United Kingdom, Canada and USA, food borne poisoning is commonly associated with the consumption of cooked fried rice (Mortimer and McCann, 1974). Serotyping studies conducted by Taylor and Gilbert (1975) showed that strains from incidents of food poisoning in US and Europe characterised by a longer incubation period and with diarrhoea as the main symptom have provided serotypes 2, 6, 8, 9 and 10, whereas those which caused the rice-associated emetic illness in United Kingdom, Canada and USA were serotypes 1, 3 or 5. Bacillus cereus food poisoning is mostly associated with rice dishes, and sporadically with other food stuffs such as meat, vegetable, pasta, dairy products, sauces, soups and sweet pastries. Bacillus cereus food-borne poisoning is also associated with pudding, cream, spices, dry milk, dry potatoes and spaghetti sauces. Bacterial contamination of the food product by the large occurs prior to cooking. Even after cooking the microbial population thrives because vegetative forms can grow over a wide range of temperatures from 25Â °C to 42Â °C and are also capable of producing endotoxins. Endospores have the ability to survive extremely high and low temperatures. When they are allowed to cool fairly gradually, they once again begin to germinate and multiply. Spores are highly resistant to dry heat than moist heat. Emetic toxins are also extremely resistant to heat. They can survive 90 min at 126Â °C, while diarrhoeal toxins are inactivated at 56Â °C in 5 min. Clinical Description Bacillus cereus is widely known as the etiological agent of food-borne poisoning, causing both gastrointestinal and non-gastrointestinal diseases. Both diarrhoea and emesis can be clearly distinguished by their clinical features. Diarrhoea is provoked by heat-labile enterotoxins, while emesis is caused by a heat-stable depsipeptide toxin called cereulide (Ehling, Fricker Scherer, 2004). The clinical syndromes associated with the diarrhoeal form of illness are longer incubation about 6 to 24 hours period, very watery diarrhoea (similar to that of C. perfringens), presence of moderate to severe abdominal cramps, nausea and vomiting in some patients, duration of illness ranges from a minimum of 20 hours to a maximum of 36 hours. Clinical features associated with the emetic form of illness are shorter incubation period of about 1 to 6 hours, presence of vomiting and abdominal cramps; diarrhoea is not severe and is present in only about a third of affected individuals (similar to poisoning by S. aureus), duration of sickness ranges from 8 to 10 hours. In both types of syndromes, fever is exceptional and disease is usually docile. Bacillus cereus also can cause other diseases such as local skin and wound infections, ocular infections, fulminant liver failure. Invasive disease, including bacteraemia, endocarditis, osteomyelitis, pneumonia, brain abscess, and meningitis are also caused by Bacillus cereus. Ocular involvement includes panophthalmitis, endophthalmitis, and keratitis (Louisiana Office of Public Health, 2004). Apart, it can bring about other infections namely, pneumonia, meningitis, encephalitis, in addition to brain and liver abscesses (Drobniewski, 1993). It is a rare cause of endocarditis (Fowler et al. 2005) reported in patients with prosthetic heart valves, rheumatic heart disease, intravenous drug use (IVDU), and in patient with leukaemia. Food Poisoning by other Bacillus species Toxic food poisoning is not only caused by Bacillus cereus, several other Bacillus species have also been implicated in food poisoning incidents. The most important species are B. subtilis and B. licheniformis. These organisms are capable of producing an extremely heat-stable toxin which seems very similar to the emetic type produced by B. cereus (Kramer and Gilbert, 1989). These species are widely associated with food products like meat, vegetable, flour, pastry, sausage rolls, meat pies and pastries, curries and various ethnic dishes with rice, and stuffed poultry. Bacillus subtilis is associated mainly with meat, vegetables in pastry, poultry products, and occasionally with bakery items such as bread, crumpets, sandwiches, and ethnic meat or seafood dishes. Food poisoning syndrome associated with B. subtilis causes acute onset nausea, vomiting and stomach cramps, incubation range is 2-5 hours, often with diarrhoea. Poisoning due to B. licheniformis shows the following symptoms; diarrhoea is more common than vomiting, incubation period is about 8 hours. Another species which was isolated in high numbers from rice associated with a food poisoning outbreak was B. pumilus. Symptoms were consistent with those similar for food poisoning by other Bacillus species than B. cereus. C. perfringens food poisoning produces a heat-labile toxin which caused predominantly lower gastrointestinal (diarrheal) disease about 12 hours after ingestion much similar to the diarrheal type syndrome caused by B. cereus. Case Studies In August 2003, five children of a Belgian family became sick after eating pasta salad. The pasta salad prepared on a Friday was taken to picnic on Saturday. The leftovers had been stored in the refrigerator. The following Monday evening the pasta was served for supper to the children. Since the pasta had an unusual odour three children (aged 14, 10 and 9) did not eat much, they ate very little quantities. After 6 hours the youngest child (aged 7) started vomiting and complained of respiratory distress. She was immediately rushed to the hospital. Upon arrival at the hospital the other 3 children also felt nauseous and started vomiting. The condition of all the children began to worsen; hence they were transported to the University Hospital in Leuven. However, during transfer, the child (aged 7) had severe pulmonary haemorrhage, quickly followed by coma, diffuse bleeding, and severe muscle cramps. She died within 20 minutes, at 13 hours after the intake of pasta. Autopsy report revealed the presence of Bacillus cereus in her gut content. The other 3 children were kept under treatment for 8 days and they gradually recovered (Dierick et al. 2005). This case elucidated the probable severity of the emetic illness, also stressing on the importance of sufficient refrigeration of cooked food. Some B. cereus strains are known to be sychrotrophic and these strains have the maximum emetic toxin production between 12 and 15Â °C. In the present case, the temperature of the refrigerator where the pasta salad was stored was 14Â °C. This probably allowed B. cereus strains to multiply quickly to attain a count of more than 108 CFU/g in 3 days along with a very high toxin production (Dierick et al. 2005). Food borne poisoning was reported in a military camp in Jurong, Singapore. This food poisoning outbreak involved 19 army personnel who became unwell after breakfast. All these army personnel had been served fried rice by a food stall in a civilian canteen. The illness was characterized by vomiting (89. 5%), abdominal cramps (52. 6%), diarrhoea (47. 4%), headache (47. 4%) and fever (10. 5%) (Tay, Goh Tan, 1982). The incubation time extended from 13/4 hours to 51/2 hours. Bacillus cereus was detected in the vomitus of the affected soldiers (Tay, Goh Tan, 1982). This makes it clear that Bacillus cereus is a causative agent for the food borne poisoning resulting in emetic and diarrhoeal illness. This species contaminates food products, especially cooked rice and refrigerated products. It is therefore essential to follow proper cooking and refrigeration methods. Proper cooking and storage of foods, especially rice cooked for later use, will facilitate to thwart food borne epidemics. For the most part B. cereus food borne outbreak is an outcome of eating cooked foods which are cooled slowly and stored the wrong way. Generally food should be stored at temperatures higher than 60Â °C or quickly chilled to less than 10Â °C immediately after cooking. Bibliography Dierick, K. , Coillie, E. V. , Swiecicka, I. , Meyfroidt, G. , Devlieger, H. , Meulemans, A. , Hoedemaekers, G. , Fourie, L. , Heyndrickx, M. Mahillon, J. (2005). Fatal Family Outbreak of Bacillus cereus-Associated Food Poisoning. Journal of Clinical Microbiology, Aug. 2005, 43(8), pp. 4277–4279. Drobniewski, F. A. (1993): Bacillus Cereus and related species. Clin Microbiol Rev. 6(4), pp. 324-38. Ehling-Schulz, M. , Fricker, M. Scherer, S. (2004). Bacillus cereus, the causative agent of an emetic type of food-borne illness. Mol. Nutr. Food Res. 48, pp. 479–487. Fowler, V. G. Jr. , Miro, J. M. , Hoen, B. , Cabell, C. H. , Abrutyn, E. , Rubinstein, E. , Corey, G. R. , Spelman, D. , Bradley, S. F. , Barsic, B. , Pappas, P. A. , Anstrom, K. J. , Wray, D. , Fortes, C. Q. , Anguera, I. , Athan, E. , Jones, P. , Meer, J. T. van der, Elliott, T. S. , Levine, D. P. Bayer, A. S. (2005) Staphylococcus aureus endocarditis: a consequence of medical progress. JAMA. 2005 Jun 22. 293(24), pp. 3012-21. Giannella, R. A. and Brasile, L. A. (1979). Hospital foodborne outbreak of diarrhea caused by Bacillus cereus. Clinical, epidemiological and microbiological studies. J Infect Dis. 139, pp. 366 – 370. Granum, P. E. (1994). Bacillus cereus and its toxins. J. Appl. Bacteriol. Suppl. 23, pp. 61S–66S. Kramer, J. M. Gilbert, R. J. (1989) Bacillus cereus and other Bacillus species. In Foodborne Bacterial Pathogens, Doyle MP, ed. Marcel Dekker Inc. New York. pp 21-70. Louisiana Office of PublicHealth. (2004). Bacillus cereus – Toxi-infection. Infectious Disease Epidemiology Section- Infectious Disease Control Manual. Available from: http://www. dhh. louisiana. gov/offices/miscdocs/docs-249/Manual/BacillusCereusManual. pdf Lund, T. , DeBuyser, M. L. Granum, P. E. (2000). A new cytotoxin from Bacillus cereus that may cause necrotic enteritis. Mol. Microbiol. 38, pp. 254–261. Mortimer, P. R. and McCann, G. (1974). Food poisoning episodes associated with Bacillus cereus in fried rice. Lancet. 1, pp. 1403 – 1405. Microbial Pathogen Datasheets. Bacillus cereus. (2001). May 2001. Retrieved from: www. nzfsa. govt. nz/science/data-sheets/bacillus-cereus. pdf Tay, L. , Goh, K. T. and Tan, S. E. (1982). An outbreak of Bacillus cereus food poisoning. Singapore Medical Journal. 23(4), pp. 214 – 217. Taylor, A. J. and Gilbert, R. J. (1975). Bacillus cereus food poisoning: A provisional serotyping scheme. J. Med. Microbiol. 8, pp. 543 – 550. How to cite A Causative Agent of Food-borne Poisoning, Papers

Outstanding Black Americans free essay sample

A discussion on some of the the achievements of well known Black Americans, such as Oprah Winfrey, Tiger Woods and Bill Cosby and the way in which they have become role models for other black Americans. The following paper examines how a number of black Americans lived through tumultuous times and faced brutal racism, however despite the hardships they all went through they are success stories. The writer focuses on their history, how some came out of impoverished backgrounds and others from modest income families. This paper briefly looks at the successes and failures of Kareem Abdul-Jabbar, Oprah Winfrey, Tiger Woods , Bill Cosby, Sarah King and Michael Jordan, their inner strength of spirit, and the way in which over the years they have transformed themselves as they worked towards making their dreams a reality. Of course, there was the memory of Martin Luther King. The flamboyant Jesse Jackson was often on news programs. We will write a custom essay sample on Outstanding Black Americans or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Oprah Winfrey was the one black person who not only gained entry into millions of living rooms but also was welcomed warmly. For years Black Americans gained recognition for their ability in baseball, basketball, football and tennis. But it was Oprah who changed the viewpoints of millions of Americans who identified with the compassionate woman. She not only became a household name, but a woman whom viewers held in high esteem regardless of their race. Her political agenda transcended party lines. She wanted to make a difference for black people, and to make this world a better place. She is respected for her ethical and moral approach to the issues of today. Her style reached out and connected with what every woman was thinking because she asked the questions and said the things that they understood. (Mair 78) There werent a lot of black people on Chicago television in 1985, but Oprahs show A.M. Chicago was a big hit.

Using Animals for Research

Table of Contents Introduction Why Use Animals Research Consideration Successes of Animal Research Ethical Issues in Using Animals for Research Conclusion Works Cited Introduction Researches have played a major role in improving the health standards of human beings and animals in general. In the past, pandemics and epidemics used to rein terror on human beings and animals. Diseases like Rinderpest, chickenpox, and plaque used to claim the lives of many individuals, however successful researches provided cures for these diseases and they no longer pose any threat. In order to find successful cures for human beings, it has proved necessary to use animals in research.Advertising We will write a custom research paper sample on Using Animals for Research specifically for you for only $16.05 $11/page Learn More Research using animals has in turn proved to be very reliable and efficient; many of the cures that have been developed have in one way or the othe r involved animal research. Using animals in research should therefore not be opposed rather should be unanimously endorsed. Why Use Animals Using animals in research, not only benefit human beings but also animals. It has been a known fact that human beings and animals are closely related and they get many of the same illnesses. Some animals are known to stand in for humans with particular diseases. In general, animal research is the type of research, survey, experiment that involves vertebrates such as mice, pigs and primates. On the other hand, clinical research is the study that entails scientists to use humans. These studies are critical and for research to reach this stage there must have been prior extensive preliminary tests in animal research studies. It is thus logical that animals be used to improve their lives and that of human beings. The world keep on fluctuating with many new diseases reported at every historical epoch (Sharp 1). It is thus obvious that emergence of n ew diseases, resistance of existing one and the need of developing vaccines makes research inevitable. These diseases and various ailments affect the immune system of animals and humans, making it weak and unable to withstand or combat the antigens. These activities take place in the body of a being and there is no way one can understand the nature of the antigens without dissecting the respective affected beings. Since the being’s immune system has failed to prevent the body from the attacks, there is no way a sick or dead organism can become ideal for conducting successful research on devising the cure of the disease that has already defeated its immune system. The affected being is crucial in understanding the nature of the disease but another healthy being is even more important in devising a cure (Herren 67). Based on the need to create a disease free world, it is inevitable to avoid research. Given the fact that researches in medical and scientific fields are inevitable , animals become the ideal and most appropriate specimen to use since human beings cannot be used in the preliminary researches.Advertising Looking for research paper on biology? Let's see if we can help you! Get your first paper with 15% OFF Learn More Human beings have also become increasingly used in researches. For a medicine or a vaccine to be verified and proved successful, then at one time, or the other, human beings must be used in the research work. If human beings can be used in the research work then there is no way that animals can be exempted (Kalat 23). Research Consideration Contrary to what has been the main argument in opposing use of animals in research work, all medical and scientific researches are carefully planned including research with animals. Animals are not, unjustifiably exploited nor put through painful experiments without an important agenda. The researchers weigh several sensitive considerations before approving each study. In medical res earch using animals as specimen, the most important aspect to take into account is the relevance of the research to human or animal health. Researchers contrary to what has been the general notion protect animals’ welfare. Researchers only use the most appropriate species and in the fewest numbers possible (Greenhaven Staff 12). Almost all researchers in ensuring that all animals are treated in the most humane way enduring the least distress follow the federal law in the US. Animals should be used and have always been used in researches because of the various formidable reasons. Animals are used because they are in many ways like human beings especially in the normal and basic body functioning like breathing, eating, hearing and seeing. Nature has been regarded as economical and the same processes are known to be recycled over time. By using animals, scientists are assured of finding crucial and linking comparisons with human beings. Some diseases like the one caused by tsets e fly affect both animals and human beings (Chiras 34). Animals are thus the perfect specimen to use when in the process of conducting a research; it is impractical or unethical to use humans. Animals are also known to be susceptible to the same health problems like the one affecting human beings. They are therefore convenient, taking into account that they also have short life cycles. Moreover, the various medical research centers are able to control and diversify the environment around the animal for example diet, temperature and lighting, something that s almost impractical to try on people. Human beings cannot be exposed to health risks for researchers to observe the course of a disease.Advertising We will write a custom research paper sample on Using Animals for Research specifically for you for only $16.05 $11/page Learn More Successes of Animal Research Researches using animals have been very successful and there is no founded reason to stop or o ppose these endeavors. Some of the most successful studies using animals have been highlighted below. Heart disease and its related conditions affect almost a quarter of the US population costing more than three hundred billion dollars in budget allocation and is the number one killer. Using animals such as dogs and cats, the basic heart mechanism have been studied and in fact, the study with dogs immensely contributed to the basic methods of controlling heart disease being devised. The modern heart treatment methods were also devised after successful study with dogs. Heart transplants, cardiac bypass, angioplasty and other treatments all resulted from this study with dogs; in addition, the various methods of diagnosis and treatment were also developed. These are electrocardiography, coronary blood flow measurements among others. HIV/AIDS has become one of the most feared pandemic to, ever hit, the earth. All countries of the world are affected in one way or the other, the hardest h it being in the sub-Saharan Africa. To this date, there is no cure that has been found for the pandemic. However various advancements have been made, the comprehensive understanding of the viruses that causes the pandemic has been derived from the study of similar viruses in monkeys, chicken and cats. Vaccines are in the process of being tested on mice and monkeys before being administered on volunteers (Research Development 2). In the past, bacteria infections were deadly and fatal; they were the main causes of death ad other acute diseases. Although in the contemporary modern world bacterial infections are extremely common and have affected people on numerous occasions during their lifetime, they are now readily treatable with antibiotics. With animals in research, in this case mice and other rodents, penicillin and other antibiotics were established as effective treatments for bacterial infections. Animals thus continue to provide crucial information to scientists on ways of comb ating certain deadly diseases (The American Physiological Society 10).Advertising Looking for research paper on biology? Let's see if we can help you! Get your first paper with 15% OFF Learn More Ethical Issues in Using Animals for Research The concern over the ethical issues arising in the use of animals has always been voiced. Those that oppose the use of animals being used in researches feel that animals are living beings and if people would not wish to be subjected to pain, then, it is ethically wrong to do the same to helpless animals. Those people who keep animals as pets feel much offended by the use of animals in research as they describe their relationship with the animals as equivalent to that with human beings. They talk of compassion, love, loyalty and so forth. It has also been argued that students may sometimes fail to euthanize animals for research and thus subjecting them to undesirable pain. There are no measures in place to ensure such kinds of students are deterred (Herren 325). Conclusion Using animals in research is desirable. Scientists do not conclusively understand human biology to an extent of directly applying new medical treatments on people or the daily evolving surgical procedures and processes. The desire to look for lifesaving cures cannot be overlooked as this is the desire of humanity to have a society where human suffering ad agony is minimal. Using animals especially in biomedical researches is thus inevitable and objective. Works Cited Chiras, Daniel. Human Biology. Sudbury: Jones and Bartlett Learning, 2010. Print. Greenhaven staff. Should Animals Be Used in Scientific Research? Greenhaven: Greenhaven Press, 1987. Print. Herren, Ray. The science of animal agriculture. New York: Delmar, 2000. Kalat, James. Biological Psychology.Belmont: Wadsworth, 2008. Research Development. ‘‘Use of Animals in Research’’ Research Development , 2009. 07 Apr. 2011. https://www.research.va.gov/programs/animal_research/ Sharp, Richard. ‘‘Ethical issues in the use of Animals in Biomedical Research.’’ Baylor College of Medicine, 2004. 07 Apr. 2011. https://ori.hhs.gov/education/products/ ncstate/biomedical.htm The American Physiological Society. ‘‘Why do scientists use animals in research?’’ Bethesda, 2006. 07 Apr. 2011. https://www.the-aps.org/career/policy-advocacy/animal-research/Why-do-scientists-use-animals-in-research?SSO=Y This research paper on Using Animals for Research was written and submitted by user Barracuda to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Expedient vs. Expeditious

Expedient vs. Expeditious â€Å"Expedient† vs. â€Å"Expeditious† â€Å"Expedient† vs. â€Å"Expeditious† By Mark Nichol What’s the difference between expedient and expeditious? The words were originally synonymous, but their meanings diverged long ago, and the distinction is small but significant. Both words derive from the Latin term expedire, which means â€Å"disengage† or â€Å"prepare.† (The literal meaning is â€Å"free the feet.†) As you may have guessed, that’s also the source of expedition, in the original sense of â€Å"journey† and the associated meaning of â€Å"those on a journey.† (The adjective form is expeditionary.) From expedire came the word expedite, meaning â€Å"dispatch or issue,† â€Å"do promptly,† or â€Å"speed up.† (Expediate is an unnecessary variant.) Two adjectives developed from this term: Expeditious originally meant â€Å"fitting† or â€Å"useful,† but it later acquired the sense of â€Å"promptly efficient† and lost its original meaning, which expedient retains. Expedient has two connotations, once neutral and the other more common slightly pejorative: Something that is expedient may be suitable, but the word more likely reflects what is done out of self-interest or because it is most convenient rather than the best solution. The adverbial form of expedient is expediently; the noun forms are expedience and, better, expediency. The adverbial form of expeditious is expeditiously, and the noun form is expeditiousness. The unrelated word expeditation (the verb form is expeditate) is closer to the literal meaning of the Latin source; it means to declaw a dog or remove the pads of its feet to deter it from chasing animals the word is therefore almost an antonym of expedite and I hope it’s obsolete. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Misused Words category, check our popular posts, or choose a related post below:Yours faithfully or Yours sincerely?Driver License vs. Driver’s LicenseParataxis and Hypotaxis