The Dangers of Avalanches Essay -- Exploratory Essays Research Papers

The Dangers of AvalanchesImagine a day of skiing or snowmobiling, where each(prenominal) is good and that last mountain must be conquered. Once on the toss, it may seem perfect, until the snow begins to give a means and start to slide. tumble down a slope moving at 150 miles per hour, shattering into trees, becoming hide under 100,000 tons of snow, only to guess which way is up, how does one survive? Will the rescuers be able to find the buried victim? For centuries, mountain dwellers and travelers have had to reckon with the deadly forces of snowy torrents descend with lightning speed down mountainsides. Researchers and experts are making progress in detection, taproom and safety measures, scarcely avalanches still take their deadly toll end-to-end the world. Each year, avalanches claim more than 150 lives worldwide, a number that has been increase over the past few decades (Cooper). Traditionally, the victims have included skiers and climbers. Today an change magnitude numb er are backcountry snowboarders and gasoline crazed snowmobilers (whyfiles.org).An Avalanche is defined as a rapidly descending large mass of snow, ice, soil, rock or mixtures of these materials, sliding or falling in response to the force of gravity. any that is necessary for an avalanche is a mass of snow and a slope for it to slide down. Avalanches occur regularly on mountains around the world, and are harmless, unless individual happens to be in the way. They tend to run down the same pathways either year, and danger zones are usually well-known (infoplease.com). Avalanches are born from a weakness in the snow. Snow is a shape-changer, depending on prevailing temperature and brave conditions. Snow begins life as a fluffy six-armed crystal flake, but while it... ...www.nature.com/nsu/990902/990902-3.html Fink, Micah. PBS Savage Planet. Extremes Forecasting Avalanches. 10 bound 2004. <http//www.pbs.org/wnet/savageplanet/04extremes/02avalforecast/indexmid.htmlFredstor Jill A. and Fesler, Doug. Snow Sense. A Guide to Evaluation Snow Avalanche Hazard. Alaska heap Safety Center, 1994.McClung, David and Schaerer, Peter. The Avalanche Handbook. Douglas and McIntyre, Ltd. 1993. national Snow and Ice Data Center. wherefore Avalanche Awareness? 12 frame 2004. <http//nsidc.org/snow/avalanche/index.htmlNational Weather Service, The Handy Weather Answer Book, Visible Ink. Detroit 1997. 9 March 2004. < http//www.crh.noaa.gov/riw/avalanch1.htmTechLink, Army Technology to be used for Better Avalanche Protection, 8 March 2004<http//techlink.msu.montana.edu/dt/armyavalancheprediction.html

Graves Disease Essay -- Graves disease Biology Essays

Graves Disease The disease was first noted in 1786 by Caleb Hillier overreach 1755- 1822, physician from General Hospital, Bath, England. His account was published posthumously in 1825. and Graves disease is named after the Irish physician who described several cases in London Medical Journal in 1835. Graves disease is also know as Parrys disease. In Europe, the disease is known as Basedows disease. It is the most customary cause of thyrotoxicosis (the morbid condition due to over body process of the thyroid gland).The disorder has three major manifestations Hyperthyroidism with diffuse goitre Ophthalmopathy and Dermopathy The three manifestations need not appear together. Indeed one or two never appear, and moreover, the three whitethorn run courses that argon by and large independent of one another.Graves disease can occur at either age but is unusual before puberty. It most commonly affects the 30 to 50 year age group. The disease is more frequent in women, the ratio of pred ominance in women may be as high as 7 1.Genetic factors play a role. There is an crosstie between the disease and the genes HLA ( human leucocyte antigen) B8, -DRw3, -Bw36, -Bw46. Indeed, a 50% concordance is strand between similar twins. This means that if one individual in an identical pair of twins is afflicted with Graves disease, the likelihood of the other sibling attack down with Graves is 50%.Being an autoimmune disease, at that place is a clinical and immunologic overlap between Graves disease and other diseases with prominent autoimmune features. These include Hashimotos thyroiditis, pernicious anemia, systemic lupus erythematosus ( SLE), rheumatoid arthritis ( RA), insulin- dependent diabetes mellitus ( IDDM), and Addisons disease.Thyroid hormones are important mediators of growth and differentiation. The absence of which leads to cretins in childhood. The hormones are also responsible for(p) for the regulation of the various metabolic pathways which are vital fo r life. They are requisite for the normal function of many organ systems.In the thyroid gland, two-fold follicles make, store and release thyroid hormones into the surrounding capillaries. These little vessels then channel the hormones to the rest of the body where they are needed.Thyroid hormones refers mainly to two hormones T3 and T4, which are single, amino acids containing iodine. They are p... ...tient is willing to take replacement Thyroxine for life, the simplest come out may be the use of radioiodine. There are arguments for and against giving radioiodine to children and new-made persons who plan to have children. Previously, clinicians are unwilling to advise its use infra the age of 45. This restriction is now rapidly being laxed as there is no convincing evidence that there is significant increase in the incidence of cancers occurring in adulthood secondary to its usage. Radioiodine can ensure that mothers are not taking anti- thyroid drugs during gestation perio d and breastfeeding. Therefore, an argument can be made for using this treatment method for all age groups bar when pregnant or breastfeeding.Relapse of Graves disease after medical therapy may be managed with a second course, but at this point radioiodine is preferred. During pregnancy and breastfeeding periods, PTU ( propylthiouracil) appears to be the safest drug to use. And surgery is advised in cases with the presence of meeter suspicious nodule.Each of the 3 major treatments ( anti- thyroid drugs, surgery and radioactive iodine) has their own advantages and disadvantages compared to the others.

The Authors Sedgwick, Gould, and Otto :: Compare Contrast Comparison

Sedgwicks Hope Leslie, Goulds Dinosaur in a Haystack, and Ottos How To Make an American Quilt The roots Sedgwick, Gould, and Otto use structure in their books to get their points across. Sedgwick, agent of Hope Leslie, divides her novel into two parts and chapters. Gould, author of Dinosaur in a Haystack, uses his book to present specific, autonomous essays and state his deliver views through literary snobbery. Otto, author of How To Make an American Quilt, divides her chapters up by first presenting instructions on how to make a quilt and because a story of one of the ladies of the quilting circle. Each book is organise by division of chapters and individual ideas of characters/essays. Although all(prenominal) author has specific righteous ideas, each presents his/her ideas to the reader for the him to analyze for himself. Without this insight into the authors mind, one would not be able to relate to what the author writes close, even in some microscopical substance. Thro ugh this insight, each author guides the reader in how to think and feel. Sedgwick writes about feelings of love and honor. She describes in her own way what each character believes and how they depart respond to changing variables. Gould writes to inform readers about his beliefs. He expresses through logic and science how his theories are correct. Otto writes about a quilting circle in a small town, where each individual has an existence comprised of a whole. rotund each feeling that every character has gives the reader a consciousness of oneness, of openness towards these characters. By writing about these thoughts and feelings, the reader is provided not lonesome(prenominal) with insight into the characters but also insight about the way the author views society.By expressing their views in each book, the authors compel readers to delve deeper into ones soul, to evaluate each part of it. What each author does in his/her own unique way is point out the flaws of society he/sh e sees and wants to fix. Sedgwick wants the opinion that females have to embrace to be reevaluated and also past events researched to discover what happened in the past (ancestry). Otto wants throng to learn from past mistakes, because life is too short to make your own. Gould wants commonwealth to be logical and scientific about everything They creationists claim, above all, that evolution generates no predictions, never exposes itself to test, and therefore stands as dogma rather than disprovable science.

Geothermal Energy Essay -- Fossil Fuels Energy Resources Oil Geysers E

Geformer(a)mal Energy The human population is shortly using up its fossil fuel supplies atstaggering rates. forwards long we will be forced to turn somewhere else forenergy. there are many possibilities such as hydroelectric energy, nuclearenergy, spark advance energy, solar energy and geothermal energy to name a few. to each one oneof these choices has its pros and cons. Hydroelectric power tends to upset theecosystems in rivers and lakes. It affects the fish and speculative life population.Nuclear energy is a very controversial subject. Although it produces gamyquantities of power with relative efficiency, it is very hard to dispose of thewaste. While tissue and solar power convey no waste products, they require giganticamounts of land to produce any large amounts of energy. I believe thatgeothermal energy may be an alternative source of energy in the future. Thereare many things that we must take into consideration in the root word geothermal energycan be a possibil ity for a human resource. I will be discussing some of theseissues, questions, and problems.In the beginning when the solar system was young, the earth was still impressing, things were very different. A peachy mass of elements swirled around adense core in the middle. As time went on the accumulation elements withsimilar physical properties into hot bodies caused a slow formation of acrystalline barrier around the denser core. tropical bodies consisting of iron wereattracted to the core with greater force because they were more dense. Thesehot bodies change posture into and became part of the constantly growing core. Less denseelements were pushed towards the surface and began to form the impudence. The earliercrust or crystalline barrier consisted of ultra basic, basic, calc-alkaline, andgranite. The early crust was very thin because the core was extremely hot. Itis estimated that the mantel e 200 to 300 degrees Celsius warmer than it istoday. As the core cooled through volca nism the crust became thicker and cooler.The earth is made up of four basic layers, the inner unhurt core, the outerliquid core, the mantel and the lithosphere and crust. The density of thelayers gets greater the snuggled to the center of the earth that one gets. Theinner core is approximately 16% of the planets volume. It is made up of ironand nickel compounds. Nobody k flats for sure exactly the outer core is thought to... ...ng. There have beenmany proficient breakthroughs that have resulted in increased efficiencies ofmodern day geothermal galvanic plants. I look that with the currentenvironmental situation that the world right off faces a viable method of clean upwill embarrass the use of geothermal power plants and resources. In a world thatis smother from the chemicals, and particulates that are created in theproduction of electricity and other commercial industries, we have no choice butto change our ways. The earth can not support the current rates of contaminati on.If we do not change fasten pollution the effects that are beginning to be seenow will become irreversible. Using geothermal resources for other purposes suchas space heating can only help reduce pollution emission. With in the followingcentury the world will begin to feel the energy crunch. Supplies of othernatural resources such as coal, oil and other petroleum products will begin tobecome scarce. The world today is wholly electricity parasitical. Withoutelectricity, the world as we know it would cease to exist. In the next centurywe must learn to be less electricity dependent or find other sources of energy.

Cyberterrorism Essay -- Cyber Terrorism Internet

Cyber act of terrorism IntroductionCyberterrorism is the convergence of terrorism and cyberspace. It is generally understood to mean wrong attacks and threats of attack against computers,networks, and the information stored therein. Possibly to intimidate, influence agovernment or its people to further political or social gain. To qualify as cyberterrorism, an attack should result in violence against persons or property, or convey fear. Attacks that lead to death or bodily injury, explosions, plane crashes, water contamination, or severe economic loss would be examples, unplayful attacks against important infrastructures could be acts of cyberterrorism, depending on their impact. This essay depart illustrate and analyse the main issues and ideas tush cyberterrorism. This will include information that has led to theinternet being employ in a mailicous way, ethical issues, paradigms that cyberterrorism follows, motivations and incidents that drive occurred in the past.One FBI spo kespersons commentary is-Cyber terrorism means intentional use or threat of use, without legally acknowledge authority, of violence, disruption, or interference against cybersystems, when it is likely that such use would result in death or injury of a person or persons, actual damage to physiological property, civil disorder, orsignificant economic harm.Cyber attacks and effectuateCyberspace is constantly under assault. Cyber spies, thieves, saboteurs, and thrill seekers break into computer systems, slew personal data and trade secrets, vandalize Web sites, disrupt service, vitiate data and systems, launch computer viruses and worms, conduct fraudulent transactions, and harass individuals and companies. These attacks are facilitated with increasingly powerful and easy-to-use software tools, which are readily available for loosen from thousands of Web sites on the Internet. Many of the attacks are serious and costly. The ILOVEYOU virus forexample, was estimated to have infec ted tens of millions of users and cost billions of dollars in damage. In light of these serious threats from cyberspace, it is worth noting that the discourse on cyberterrorism is something that fortunately has not been carried out in its about destructive capabilities. It is, therefore, d... ...italworld today. In addition to cyberattacks against digital data and systems, many another(prenominal) people are being terrorized on the Internet today with threats of physical violence. Online stalking, death threats, and hate messages are abundant. These crimes are serious and must be addressed. In so doing, governments around the world will be in a better position to police and answer to cyberterrorism if and when the threat becomes imminent. SourcesAuthor Unknown. Cyber Terrorism Understanding Cyber Threatshttps//www.hamiltoncountyohio-tewg.org/cyber_terrorism/Aldo Leon. The New Age of Cyberterrorismhttp//www.sabianet.com/Res_The%20New%20Age%20of%20Cyberterrorism.pdfDorothy E. De nning. Cyberterrorism http//palmer.wellesley.edu/ivolic/pdf/USEM/Cyberterror-Denning.pdfMohamed Chawki. A Critical Look at the Regulation of Cybercrimehttp//www.crime-research.org/library/Critical.doc.Robert Mal. Virtual communities and cyber terrorism http//www.unob.cz/spi/2007/presentace/2007-May-03/06-Jirovsky_CyberTer.ppt.Peter Reilly. How Real is the Threat of Cyber Terrorism? http//www2.lhric.org/security/desk/letter8.html

Adventures of Sherlock Holmes and Scandal in Bohemia Essay examples --

Adventures of Sherlock Holmes and Scandal in BohemiaThe Adventures of Sherlock Holmes was written by Sir Arthur ConanDoyle. The novel was first published in 1892. A Scandal in Bohemia was a soon story nearly a woman who has pictures of herself and a high Englishnobleman. She used them to work him. Sir Arthur Conan Doyle was a novelist, a detective-story writer, and aphysician. He was born on May 22, 1859 and died on July 7, 1930. He beganwriting The Adventures of Sherlock Holmes in 1890 and finished writing it in1892. Sir Arthur Conan Doyle was so successful in his writing that he gave uphis career as a physician exclusively five years after the creation of Sherlock Holmes. Sherlock Holmes and bear upon Watson were created by Sir Arthur Conan Doylein a bar in England when Doyle was having legal problems. The story took backside in March of 1888. Sherlock Holmes resided at 221BBaker Street in London, England. internal his room were all the materials he necessary to use to solve his cases One night, it was on the ordinal of March 1888, I was returning from a journey to a patient, when my panache led me through Baker Street. His rooms were brilliantly lit, and, even as I looked up I saw his tall, spare figure force twice in a dark silhouette against the blind. The second fractional of the story took place at Briony Lodge. This is where IreneAdler resided. Her house had a subatomic garden and was two stories high. The story began when Doctor Watson visited Sherlock Holmes. Holmestold Watson that he needed his help on a case. The case involved pictures ofthe King of Bohemia and a woman named Irene Alder. The King of Bohemiawas going to marry a woman he loved, but Irene Alder blackmailed him withthe pictures. Irene Alder was in love with the King and did not want him tomarry another woman. Sherlock Holmes came up with a plan to spring up the pictures back from IreneAlder. Holmes had a group of his friends cause a commotion with Irene in frontof her house . Then, Holmes dashed into the crowd to pretend that he wasprotecting the woman and was punched by wiz of the men. He had concealed a diminutive amount of red paint in his hand. When the iron was broken up, Holmeswas on the ground with the paint on his face. He assumed that he wasseriously injured and was brought into Irenes house. While Holmes was being cared for by Irene and a small crowd of pot,Doctor Watson sent a smoke rocket into h... ... human is perfect.Many people believed that Sherlock Holmes was the perfect detective and thathe would never lose a case. This short story proved these people wrong.Sherlock Holmes was adapted to find out where the pictures were and was able toexecute his plan. However, Irene Alder outsmarted Holmes by leaving thehouse before being caught. Fortunately for both(prenominal) the King of Bohemia andSherlock Holmes, she found a man that she loved and did not blackmail theKing anymore. If she did not love this man, it is probable that she wou ld still beblackmailing the King and tSherlock Holmes would have to begin the caseagain. A Scandal in Bohemia is a short story that accepted more attention thanany other one written by Sir Arthur Conan Doyle. It sure this attentionbecause Sherlock Holmes, for the first time, is outwitted. Sir Arthur ConanDoyle uses deductive reasoning, which is when reasoning is used to form themost potential conclusion. He also used irony, which is a contrast between the waythings await to be and the way they turn out. Irene Alder thought that SherlockHolmes was injured and had agate line running down his face, but he really was justpretending to be injustice and red paint was on his face.

The Causitive Agent of Rocky Mountain Spotted Fever Essay -- Biology M

The Causitive Agent of Rocky Mountain Spotted FeverThe Bacteria Rickettsia rickettsii is the small, aerobiotic gram-negative bacterium that is the cause Rocky Mountain spotted pyrexia in humans (and other vertebrates). They are obligate, intraelectric cellular bacteria that prune in size form 0.2x0.5 m to 0.3x2.0m. Rickettsia belong to the phylum alpha-protobacteria, which are unresolved of growing in low levels of nutrients, and have a long extension time relative to other gram negative bacteria such as Escherichia coli. In humans rickettsiae preferentially reside in the effect or cytoplasm of cells lining small to medium size blood vessels.Rickettsia enter soldiers cell by inducing phagocytosis, then straightaway escape the phagosome to grow and reproduce within the cytoplasm (or nucleus)of the force cell. The host cell will normally lyse eventually, causing the release of new-made organisms. The host cell is also harmed by the toxic effect of the cell wall. (CDC) van Ki rk et al have done studies showing that actin-based motility (ABM) is a instrument for intercellular spread. R. rickettsii is the only Rickettsia species that utilizes ABM. Findings suggest that ABM is a major means in causing infection after a host cell becomes infected the polymerization of the actin of the host cell forms a filamentous actin comet drag. The actin tail aids the pathogen in moving through the cytosol and into membrane protrusions of the host cell, where it fire be engulfed by neighboring cells and can initiate a new infectious cycle.The vector Rocky Mountain spotted fever (RMSF) is categorise as a zoonosis (diseases of animals that can be transmitted to humans), and requires a vector for transmission. The vectors (and reservoirs) for RMSF are tic... ...G. Marshall, Anita M Kelsey, MD. Whats Your Diagnosis? Consultant venerable 19961729-1735Niebylski, Mark L., Mort G. Peacock, and Tom G. Schwan. Lethal Effect of Rickettsia rickettsii on Its Tick Vector (Derm acentor andersoni) Applied and Environmental Microbiology Feb 1999 p 773-338.Rahman, M. Sayeedur, Jason A. Simser, Kein R. Macaluso, and Abdu F. Azad. Molecular and Funcional Analysis of the lepB Gene, Encoding a Type I Signal Peptidase from Rickettsia rickettsii and Rickettsia typhi. Journal of Bacteriology August 2003 (2003 American Society for Microbiology)4578-4584.Van kirk, Levi S., Stanley F. Hayes, and Robert A. Heinzen. Ultrastructure of Rickettsia rickettsii Actin Tails and Localization of Cytoskeletal Proteins. Infection and Immunity (August 2000). Abstract. 16 September 2004. .