Bacteria Essays (Examples)

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Luminous Bacterium Vibrio Fischeri Vibrio

Words: 2011 Length: 6 Pages Document Type: Essay Paper #: 30709179

The chemical was found to turn on quorum sensing in V. fischeri, whereas it inhibited pathogen Pseudomonas aeruginosa. Also, the slow-release was shown to be far more effective than by applying the chemical directly as an aqueous solution. Since quorum sensing is also important for pathogen establishment this application could be important for inhibiting pathogenic bacteria from colonization of internal medical devices.

In summary, the V. fischeri and squid symbiotic relationship is an important model host-bacteria system. Aspects of colonization of host-symbiont and host-pathogen have been shown, using the V. fisheri and squid model, to be the same. Therefore, understanding the mechanism and complex transcriptional regulatory systems of V. fischeri could lead to potential new therapies and pharmaceutical applications. Likewise, understanding the environmental factors necessary for successful host-bacteria interactions could lead to novel drug targets. In addition to being important in understanding other harmful host-bacteria relationships the V. fischeri and…… [Read More]

References:

Breitbach, a.S., Broderick, a.H., Jewell, C.M., Gunasekaran, S., Lin, Q., Lynn, D.M., & Blackwell, H.E. 2010. Surface-mediated release of a synthetic small-molecule modulator of bacterial quorum sensing: Gradual release enhances activity. Chem Comm.

Chun, C.K, Troll, J.V., Koroleva, I., Brown, B., Manzella, L., Snir, E., Almabraz, H, Scheetz, T.E., Bonaldo, M.F., Casavant, T.L., Soares, M.B., Ruby, E.G., & McFall-Ngai, M.J. 2008. Effects of colonization, luminescence, and autoinducer on host transcription during development of the squid-vibrio association. PNAS 105(32): 11323-11328.

Lyell, N.L., Dunn, a.K., Bose, J.L., Stabb, E.V. 2010. Bright mutants of Vibrio fischeri ES114 reveal conditions and regulators that control bioluminescence and expression of the lux Operon. J. Bacteriol. 192(19): 5103-5114.

Murray, P.R., Rosenthal, K.S., Kobayashi, G.S., Pfaller, M.A. 1998. Vibrio, Aeromonas, and Plesiomonas. In M. Brown (Ed.), Medical Microbiology Third Edition (pp. 245-250). St. Louis, MO: Mosby.
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New Bacterium Scientists in Japan

Words: 492 Length: 2 Pages Document Type: Essay Paper #: 17664208



Epidemiology

The epidemiology of Microbacterium hatanis is unknown at this time (New species of bacteria contaminates hairspray, 2008). However, researchers have found similar bacteria to infect humans and are concerned with what impact Microbacterium hatanis will have. For this reason, researchers will conduct additional testing to determine if the new species poses a health threat and, if so, researchers will make recommendations for new hairspray formulations to prevent future contamination.

Conclusion

The discovery of Microbacterium hatanonis is significant because contamination of cosmetic products has previously been thought to be rare. This new species in hairspray will no doubt lead to further research in this area, especially since Microbacterium hatanonis can grow in an environment which is pH neutral and 30°C, the environment common in the manufacturing of may commercial cosmetic products (Contaminated hairspray, 2008). Hairspray, with its high alcohol content, had not seemed to provide the ideal conditions for life…… [Read More]

Bibliography

Bakir, M.A., Kudo, T. And Benno, Y. (2008). Microbacterium hatanonis sp. nov., isolated as a contaminant of hairspray. International Journal of Systematic and Evolutionary Microbiology. 58, 654-658; DOI 10.1099/ijs.0.65160-0. Retrieved at http://ijs.sgmjournals.org/cgi/content/abstract/58/3/654

Contaminated hairspray. (2008, March 9). Wall Street Journal. Retrieved at  http://science.kukuchew.com/tag/microbacterium-hatanonis/ 

New Species of Bacteria Contaminates Hairspray (2008, March 9). ScienceDaily. Retrieved at http://www.sciencedaily.com/releases/2008/03/080307110337.htm
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Wild Type and Lac Operon Mutant Strains of the Bacterium Escherichia Coli

Words: 1073 Length: 3 Pages Document Type: Essay Paper #: 76906271

Lac Operon Genetics

Practical 2. Analysis of wild type and lac operon mutant strains of the bacterium Escherichia coli

Complete the results tables below using the data you obtained in the practical.

Describe the size, colour and eosin sheen of the colonies on the EMB plates in Table 1 below.

Strain

Size

Colour

Eosin sheen

WT

Large colonies purple

Strong eosin sheen

H

Large colonies purple

Weak eosin sheen

J

Small colonies pink

No eosin sheen

K

Small colonies pink

No eosin sheen

Fill in the fluorescence results for NA+glu and NA+lac in Table 2 below.

Strain

NA+glu within 1 minute of MUG overlay

NA+glu

minutes after MUG overlay

NA+glu

minutes after MUG overlay

NA+lac within 1 minute of MUG overlay

NA+lac

minutes after MUG overlay

NA+lac

minutes after MUG overlay

WT

H

J

K

* Record the degree of fluorescence as (-) or (+) or (++) or (+++). Where…… [Read More]

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Clostridium Perfringens

Words: 1231 Length: 4 Pages Document Type: Essay Paper #: 24783427

Clostridium perfringens or as it is more commonly called C. perfringens, formerly known as C. welchii , is a bacterium which is part of the genus Clostridium. It is a common bacterium which occurs naturally and is subsequently

found all over the world (Ryan). Like many bacteria, it is most often found in decaying matter such as dead plants, animals, and insects. It can also be found in living matter, such as the intestines of infected human beings. In addition, the bacteria can survive in environments with very little oxygen present. Infection from C. perfringens can be very dangerous to people who contract it. It is defined as, "Clostridium perfringens is a pathogenic species of Clostridium that causes a wide range of disease in humans -- from a limited gastroenteritis to a myonecrosis termed gas gangrene" (Nanney). C. perfringens is most often found in ill-cooked food matter or in fecal…… [Read More]

Works Cited

Borland, Sophie & Sinmaz, Emine. "They Sent Her Home and She Lay in My Arms Dying:

Husband's Anger at Hospital and Pub After his Wife Dies from Suspected Christmas Day Food Poisoning." Daily Mail. UK: Associated Newspapers, 2013. Print.

CDC. "CDC Estimates of Foodborne Illness in the United States." Atlanta, GA: Centers for Disease Control and Prevention.

"Clostridium Perfringens." U.S. Department of Health & Human Services. N.p., 2013. 6 April.
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Fantastic Voyage Welcome Aboard the SS William

Words: 1587 Length: 4 Pages Document Type: Essay Paper #: 96147003

Fantastic Voyage

Welcome aboard the SS William Harvey! As you well know the human body is a complex system of intricate cells that work together to maintain a perfect and efficient environment on which an individual can thrive. Two systems in the human body that work together to ensure that a human individual remains healthy are the circulatory and the cardiopulmonary systems. Working in conjunction with each other, these systems help with the transportation of gasses, nutrients, and hormones to different organs within the human body. While the intricate mazes that make up the different systems in the human body may confuse some individuals, finding one's way from the femoral vein in the circulatory system to the lungs is not as complicated as it sounds.

Join us as we embark on this Fantastic Voyage through the human body as we visit and discover new cells and organs of the human…… [Read More]

Bibliography

Cotterill, S. (2000). The cardiovascular system (heart and blood): medical terminology for cancer. Department of Child Health. University of Newcastle upon Tyne. Retrieved 27 July 2012, from  http://www.cancerindex.org/medterm/medtm8.htm 

Gregory, M (n.d.). The circulatory system. Clinton Community College. State University of New York. Retrieved 27 July 2012, from http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/Bio%20100/Bio%20100%20Lectures/Organ%20Systems/Circulatory%20System/Circulatory%20System.htm

How does the body fight infections? (n.d.). WiseGeek. Retrieved 27 July 2012, from http://www.wisegeek.com/how-does-the-human-body-fight-infections.htm

Inner Body. (2011). All systems. Retrieved 27 July 2012, from http://www.innerbody.com/htm/body.html
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Staphylococcus Aureus Is a Type

Words: 580 Length: 2 Pages Document Type: Essay Paper #: 57712865

Tests are therefore conducted to examine if there is a presence of S. aureus that caused the illness and if the bacteria is or can be recognised as a potential source for food poisoning (Bennet & Lancette, 2001). One such test is known under the name of Direct Plate Count Method as it was illustrated by Bennet and Lancette, generally requiring a step-by-step procedure involving a. Equipment and materials, B. Media and reagents, C. Preparation of sample, D. Isolation and enumeration of S. aureus, E. coagulase test, F. ncillary tests, and G. Knowledge of some typical characteristics of species of staphylococci and micrococci (Bennet & Lancette, 2001).

fter considering several mediums for growing Staphylococcus, it seems Tryptic Soy gar (TS) is of some convenience as it allows for the cultivation of a wide variety of microorganisms. lso, the nutritional composition favours plate counting which is beneficial in the examination of…… [Read More]

After considering several mediums for growing Staphylococcus, it seems Tryptic Soy Agar (TSA) is of some convenience as it allows for the cultivation of a wide variety of microorganisms. Also, the nutritional composition favours plate counting which is beneficial in the examination of food.

In cases of antibiotic resistance, the issue is first and perhaps foremost of hygiene. Afterwards it is an issue of people having to take antibiotics only when necessary. Of course, these are preventive measures that generally are required from individuals. Overcoming antibiotic resistance has taken a new approach as exemplified by Levy (2002) and it consists of trasferring the resistance genes into other bacteria through several genetic means (p. 26). Of the three adoptive methods, it seems the latter, that of DNA released of dead bacteria and incorporated into new strains has also proved efficient in resisting among pneumococci and Haemophilus spp. (Levy, 2002, p. 26)

For determining antibiotic resistance a few sensitive testing methods exist: dilution methods, disk diffusion method, E-test, automated antimicrobial susceptibility testing systems, mechanism-specific tests, and genotypic
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Prokaryotes Consist of Millions of Genetically Distinct

Words: 2739 Length: 10 Pages Document Type: Essay Paper #: 60665561

prokaryotes consist of millions of genetically distinct unicellular organisms. A procaryotic cell has five essential structural components: a genome (DNA), ribosomes, cell membrane, cell wall, and some sort of surface layer which may or may not be an inherent part of the wall (1). Functional aspects of procaryotic cells are related directly to the structure and organization of the macromolecules in their cell make-up, i.e., DNA, RNA, phospholipids, proteins and polysaccharides. Diversity within the primary structure of these molecules accounts for the diversity that exists among procaryotes (1). Identifiable groups of prokaryotes are assembled based on easily observed phenotypic characteristics such as Gram stain, morphology (rods, cocci, etc.), motility, structural features (e.g. spores, filaments, sheaths, appendages, etc.), and on distinguishing physiological features (e.g. anoxygenic photosynthesis, anaerobiasis, methanogenesis, lithotrophy, etc.). Prokaryotes are commonly known as bacteria, and it is estimated that bacteria have been around for at least 3.5 billion years…… [Read More]

BIBLIOGRAPHY

1. Bergey's Manual of Systematic Bacteriology (2nd Edition). 1989. Williams, S.T., Sharpe, M.E., Holt J.G. Lippincott Williams & Wilkins

2. Breiman RF, Butler JC, Tenover FC, Elliott JA, Facklam RR. (1994). Emergence of drug-resistant pneumococcal infections in the United States. JAMA. 1994 Jun 15;271(23):1831-5.

3. Center for Disease Control and Prevention. Antibiotic/Antimicrobial resistance. http://www.cdc.gov/drugresistance/actionplan/html/

4. Jones RN, Pfaller MA (1998). Bacterial resistance: a worldwide problem. Diagn Microbiol Infect Dis. Jun;31(2):379-88.
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Desiccation Tolerance in Prokaryotes

Words: 5347 Length: 15 Pages Document Type: Essay Paper #: 11735432

Desiccation Tolerance in Prokaryotes

Water is very important for life. Indeed, the processes of life, both external and internal even, at the cellular and the molecular level, are governed by water. Without water, most living organisms suffer from what is known as water stress.

This water stress can be due to the loss of water or dehydration. Desiccation is a special case of dehydration where drying takes place in air. Alternatively, another form of water stress is due to the excessive accumulation of salts. This is relatedly called osmotic stress. Osmosis seeks to reduce this accumulation by moving fluids across a concentration gradient. While most living beings cannot survive without water, lesser species belonging to the eukarya group -- that includes both bacteria and a more primitive organism archaea show remarkable tolerance to water stress.

Responses to water stress takes place at a supracellular level as well as a cellular…… [Read More]

Bibliography

Bartels, D., & Salamini, F. (2001). Desiccation tolerance in the resurrection plant Craterostigma plantagineum. A contribution to the study of drought tolerance at the molecular level. Plant Physiol, 127(4), 1346-1353.

Billi, D., Friedmann, E.I., Hofer, K.G., Caiola, M.G., & Ocampo-Friedmann, R. (2000). Ionizing-radiation resistance in the desiccation-tolerant cyanobacterium Chroococcidiopsis. Appl Environ Microbiol, 66(4), 1489-1492.

Breeuwer, P., Lardeau, A., Peterz, M., & Joosten, H.M. (2003). Desiccation and heat tolerance of Enterobacter sakazakii. J Appl Microbiol, 95(5), 967-973.

DiRuggiero, J., Santangelo, N., Nackerdien, Z., Ravel, J., & Robb, F.T. (1997). Repair of extensive ionizing-radiation DNA damage at 95 degrees C. In the hyperthermophilic archaeon Pyrococcus furiosus. J Bacteriol, 179(14), 4643-4645.
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Public Health information

Words: 2455 Length: 4 Pages Document Type: Essay Paper #: 71584020

What are Bacteria and Viruses?

The most basic difference between bacteria and viruses is their size. Whereas both bacteria and viruses are too tiny to notice with the naked eye, most bacteria are about one micrometer in length and can be perceived with a good optical microscope. On the other hand, viruses are smaller than the wavelength of visible light, which suggests that they can only be perceived by using an electron microscope (Nursing Times, 2006). Infection, every so often the initial phase, takes place when bacteria, viruses or other microbes that cause disease enter the human body and start to multiply. Disease comes about and ensues when the cells in the human body are damaged, as a result of the infection, and signs and symptoms of a disease appear.
Causes

Bacterial and viral infections are contaminations caused by bacteria and viruses. Bacteria release poisons known as toxins into the…… [Read More]

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Biology Qs Microbes Exist All

Words: 1525 Length: 5 Pages Document Type: Essay Paper #: 89102749

Given a mosquito's vastly shorter life span, preventing the spread of the infection to more human hosts greatly reduces the number of viable parasites in existence (CDC 2009).

10)

There are several reasons that viral infections are more difficult to treat and diagnose than bacterial infections. For one thing, viruses are not truly alive, and this makes it difficult to kill them. They are essentially packets of genetic information in tough protein shells; there are no real biological mechanisms for medicines to disrupt. In addition, the virus' use of host cells as reproduction sites means that drugs used to attack the virus often als due damage to healthy cells and the body's natural defenses. The basic life cycle of an animla virus includes hijacking a host cell and reproducing until rupture, where the process continues in new host cells. Most viruses can remain viable indefinitely outside a host, so the…… [Read More]

Reference

CDC. (2009). "Malaria." Accessed 22 September 2009. http://www.cdc.gov/Malaria/index.htm
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Washing and Use of Testosterone The Action

Words: 960 Length: 3 Pages Document Type: Essay Paper #: 41458739

Washing and Use of Testosterone:

The Action of Hand Soap Bacteria:

Hand washing is an important practice for body hygiene because of its seeming effectiveness in preventing the transmission of bacteria. Actually, it is believed that hand washing helps to lessen the risk of bacterial infection through removing and destroying bacterial cells. Generally, the use of hand soap while complying with the good washing practices help an individual to destroy bacteria in the hands, which in turn decreases the spread of diseases or illnesses. The need to wash hands using hand soap is attributed to the accumulation of bacteria on the surface of a person's hands because of numerous opportunities brought by day-to-day activities. For instance, a person encounters bacteria every time he/she touches another individual, touches raw meat, and handles money. The bacteria can get into the individual's hands and under his/her fingernails and spread if he/she touches any…… [Read More]

References:

Angkadjaja, S. (2012). What Makes Antibacterial Soap Antibacterial? Retrieved from Illumin

University of Southern California website:  http://illumin.usc.edu/printer/68/what-makes-antibacterial-soap-antibacterial/ 

Singer, N. (2006, August 10). Does Testosterone Build A Better Athlete? The New York Times.

Retrieved December 4, 2013, from http://www.nytimes.com/2006/08/10/fashion/10Fitness.html?pagewanted=all&_r=0
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Corynebacterium Diphtheria The Answered The Pdf

Words: 1319 Length: 4 Pages Document Type: Essay Paper #: 76274818

Corynebacterium diphtheria. The answered . The pdf file attached referenced. The paper written format a scientific paper a microbiology . These textbooks great sources reference: Willey, J.

Corynebacterium diphtheriae is a bacterium that is pathogenic and is the leading cause of diphtheria. Due to the resemblance in their shape and sizes, bacteria and archaea were earlier classified as one but on discovery of their metabolic and biochemical differences, it was determined that they had different evolution histories. The bacillus falls under the nonlipophilic fermentative bacteria in classification. Structurally, it possesses cell membranes formed from a combination of the hydroxyl group and fatty acids. Unlike the bacteria, the archaea has linkages that contain ether bonds (Willey, 2003). The cell wall of C.diphtheriae is made up of peptidoglycan bonds which is a great variance from that of the archaea which contains no such bonds. Another major cutting edge factor that classifies C.diphtheriae…… [Read More]

Lammert, J.M. (2007). Techniques in Microbiology. Upper Saddle River, NJ: Pearson Prentice Hall.

McClane, B.A., & Mietzner, T.A. (1999). Microbial pathogenesis: a principles-oriented approach: Fence Creek Pub.

Willey, J.M., Sherwood, L.M., & Woolverton, C.J. (2003). Prescott's Microbiology (8 ed.). Dubuque, Iowa: McGraw Hill Higher Education.
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Gram Lab Gram Staining Lab the Gram

Words: 801 Length: 3 Pages Document Type: Essay Paper #: 46579570

Gram Lab

Gram Staining Lab

The Gram staining of bacteria is one of the most important tests in identifying specific bacterial strains, and is usually the first test performed when medical or research laboratories need to identify an unknown bacteria (Xu, 1997; AACC, 2011). Named for the inventor of the technique, Hans Christian Gram, Gram staining first came into use in Gram's own Danish medical and research practice in 1882, and became very widely known and used after the details of the technique were published in 1884 (Xu, 1997). Though some adjustments can be made to the original technique without losing effectiveness, the basic process of Gram staining has remained unchanged for over a century, and is as effective and essential a test today as it was in the latter half of the nineteenth century (Xu, 1997).

Simply put, the Gram staining test often (though not always) allows the researcher…… [Read More]

References

AACC. (2011). Gram Stain. American Association for Clinical Chemistry. Accessed 14 September 2011. http://labtestsonline.org/understanding/analytes/gram-stain/tab/test

Xu, G. (1997). Gram stain. University of Pennsylvania Health System. Accessed 14 September 2011.  http://www.uphs.upenn.edu/bugdrug/antibiotic_manual/gram.htm
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Desiccation Tolerance in Prokaryotes

Words: 3768 Length: 12 Pages Document Type: Essay Paper #: 50250294

Desiccation Tolerance in Prokaryotes

Prokaryotes or eukaryote is the organism that makes up the microbial world. Prokaryotes are deficient of internal unit membranes and are self-sufficient cells or organisms. The best-known prokaryotic organisms are the bacteria. The cell membrane in prokaryotes makes up the cell's primary osmotic barrier and consists of a phsopholipids unit membrane. The ribosome carries out translation and protein synthesis and is present in the cytoplasm. Normally, the nuclear regions consist of circular, double-stranded deoxyribonucleic acid.

Plasmids, the accessory self-replicating genetic structure is present in many prokaryotes with extra not necessary cell functions like encoding proteins to inactivate antibiotics. On the other hand, the eukaryotic cells have a nuclear membrane, well-defined chromosomes, mitochondria, a sector device, an endoplasmic reticulum and digestive system with many cell types. The prokaryotes are deficient of structural multiplicity and consist of millions of genetically distinct unicellular organism, which is well-known among eukaryotes…… [Read More]

References

Desiccation tolerance of prokaryotes" Retrieved at  http://www.cryonet.org 

Engineering desiccation tolerance in Escherichia coli" Billi, Daniela; Wright, Deborah J; helm, Richard F. Pricket, Todd; Potts, Malcolm; Crowe. John H. Retrieved at http://www.nencki. gov. pl

Major groups of prokaryotes" Retrieved at http://www.bact.wisc.edu

Mechanisms of plant desiccation tolerance" Hoekstra, Folkert A; Golovina, Elena; Buitink, Julia. Retrieved at http://www.plantstress.com
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Aerobic Respiration Produces the Most

Words: 1435 Length: 5 Pages Document Type: Essay Paper #: 81140583

Based on the results of these assays, S. flexneri can often be identified, although additional kits may be required. The simplest way, however, may be the novel approach through multiplex PCR (mRPC). It is possible to identify Shigella species through mPCR techniques by identifying pathogenicity islands associated with Shigella and S. flexneri.

6. How could you create a corn plant that would express the human protein fibrin? (You need to include techniques, steps, enzymes, etc.)

In order to create a corn plant that would express the human protein fibrin, scientists would first need to incorporate the human fibrin gene within the corn plant genome. The incorporated human gene would require regulation and promoter sequences that would function within the plant cell. Proper splicing sequences would also be required or removal of the introns altogether.

The delivery of transgenes into the corn plant could be accomplished through electroporation into corn protoplasts…… [Read More]

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Diagnosis and Treatment of TB

Words: 1771 Length: 5 Pages Document Type: Essay Paper #: 44261432

Tuberculosis

Causative agent

Tuberculosis is an infectious disease of animals and humans. The most common causative agent of the disease is a bacterium a mycobacteria known as Mycobacterium tuberculosis. This bacterium was first discovered by obert Koch in 1882. The physiology of this bacterium is aerobic and hence requires very high oxygen levels. This is primarily a pathogen of the mammalian respiratory system which infects the lungs. The most common methods used to diagnose tuberculosis are acid-fast stain, tuberculin skin test and chest radiations. M. tuberculosis requires oxygen in order for it to grow. Due to the presence of mycolic acid, M.tuberculosis has an waxy coating on its surface which is unusual making the cells impervious to Gram staining It can not retain any bacteriological stain as a result of a high lipid content on its wall therefore acid-fast staining or ziehl-Neelsen staining are used. Despite this M.tuberculosis is still…… [Read More]

References

Mandal, A. (2014). History of Tuberculosis. Retrieved October 17, 2014 from  http://www.news-medical.net/health/History-of-Tuberculosis.aspx 

Knechel, N. (2009). Tuberculosis: Pathophysiology, clinical Features, and Diagnosis. Retrieved October 17, 2014 from  http://ccn.aacnjournals.org/content/29/2/34.short 

Mathema, B., Kurepina, N., Bifani, P., & Kreiswirth, B. (2006). Molecular Epidemiology of Tuberculosis: Current Insights. Retrieved October 18, 2014 from  http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1592690/
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Bioprocess of Monosodium Glutamate MSG

Words: 1940 Length: 6 Pages Document Type: Essay Paper #: 62730171

Monosodium glutamate, otherwise known as MSG, is a commonly discussed food additive used throughout the world today. While some countries use it minimally, and place high restrictions on its use, other countries use it on a consistent basis, in many foods. This paper will examine MSG, and its uses. Additionally, this paper will examine each step of how MSG is made, using fermentation. The discussion will include technical details of the process, the equipment commonly used, the use of enzymes and bacteria, as well as an examination of the product packaging and quality control procedures. Finally, this paper will include a brief description of the market of MSG, and the socio-economic aspects of the product.

Monosodium glutamate, or MSG, is the sodium salt of glutamic acid. Glutamate is an amino acid that occurs naturally in many foods known for their flavor, such as tomatoes and mushrooms. Additionally, glutamate is found…… [Read More]

References

Aida, K., Chibata, L. Nakayama, K., Takinami, K., and Yamada, K. 1986. Biotechnology of Amino Acid Production. Amsterdam: Elsevier, p. 215.

Ajinomoto Company, Inc. 1996. Production process of amino acids. Encyclopedia of Amino Acids. Tokyo, Japan: Ajinomoto Company, Inc.

Blue Diamond. 2004. History of MSG. Facts About MSG. Obtained October 18, 2004 from Direct Food Ingredients, LTD. Web site: http://www.directfood.net/bluediamond/history.asp.

DeSilva, F.J. 1997. Removing organics with ion exchange resin. Water Conditioning and Purification Magazine, 2, p. 5-8.
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Penicillin Focuses on the Miraculous Discovery of

Words: 811 Length: 2 Pages Document Type: Essay Paper #: 91017196

Penicillin focuses on the miraculous discovery of Alexander Fleming in the world of medicine called the Penicillin. This paper illustrates the process of discovery of this drug and outlines the various advantages it has caused not only to people but the society as well. This paper also emphasizes on the side effects of antibiotics but also proves how this may prove to be beneficial for many researchers, doctors and scientists.

Penicillin

One of the most brilliant knowledge advances of this century - as great as the computer, as great as the abolition of natural racial inferiority and growing awareness of spaceship earth, has been the conquest of infectious diseases. Drugs are thousands of years old. Neolithic, perhaps even paleolithic shamans and medicine men and women knew the curative powers of many plants. The ability of alcohol, in wine, beer and stronger liquors, to make life seem better than it really…… [Read More]

Works Cited

Mary B. The History Of Penicillin. 2003. Available on the address http://inventors.about.com/library/inventors/blpenicillin.htm. Accessed on 22 Nov.
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Typhoid Fever Disease Is a Global Health

Words: 1926 Length: 6 Pages Document Type: Essay Paper #: 98897703

Typhoid fever disease is a global health phenomena or problem with approximately 20 million incidents and 700,000 adult deaths every year. Notably, a huge portion of these cases and deaths occur in developing countries, especially in South East Asia and Indian subcontinent. While the infection was traditionally treated with ampicillin, chloramphenicol, and trimethoprimsulfamethoxazole, serious public health program has emerged in the past decades because of the widespread emergence of antibiotic resistant Salmonella typhi or S.typhi. Moreover, typhoid fever disease caused by MD organisms can also be considered as a significant public health and therapeutic issue. This is primarily because there are a huge number of cases of MD typhoid fever that occur in childhood and are coupled with considerably high mortality and morbidity rates. Since the disease has developed to become a significant public health issue in the past few decades, it's important to conduct a research about it and…… [Read More]

References:

Arjunan, M. & Al-Salamah, A.A. (2010, April 29). Typhoid Fever with Severe Abdominal Pain:

Diagnosis and Clinical Findings using Abdomen Ultrasonogram, Hermatology-cell Analysis and the Widal Test. Journal of Infections in Developing Countries, 4(9), 593-596. Retrieved from http://jidc.org/index.php/journal/article/download/1010/445

Hammad et al. (2011). Ceftriaxone vs. Chloramphenicol for Treatment of Acute Typhoid

Fever. Life Science Journal, 8(2), 100-105. Retrieved from  http://www.lifesciencesite.com/lsj/life0802/14_4757life0802_100_105.pdf
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Shigella Dysenteriae Around the Globe

Words: 1577 Length: 6 Pages Document Type: Essay Paper #: 98177074

Micro-Organism: Syghella dysenteriae

Genus: Shigella (Castellani and Chalmers 1919)

Type species: Shigella dysenteriae (Shiga 1897) Castellani and Chalmers 1919 (Approved Lists 1980)

Gammaproteobacteria, from the family of enterobacteriaceae (GBIF.org)

Gram-negative, non-acid-fast bacilli; no spores, no capsules; non-motile; do not posses flagella, rod-shaped bacteria (Todar, 008-01)

Picture was obtained from Sciencephoto Library

According to the national Institute of Health, "Shigella dysenteriae serotype 1 (SD1) causes the most severe form of epidemic bacillary dysentery"

Shigella dysenteriae type 1 is rare in the U.S., but it causes epidemics in the developing countries (Todar, 008-01)

Shigella dysenteriae is one of the four species of Shigella, also known as group A (World Health Organization, 005).

The microorganism produces a toxin called Shiga toxin (Bhunia, 007). I causes shigellosis, characterized by bacillary dysentery (mucoid bloody stool).

Shigella micro-organisms are present in soil and water. They will become infective only in the presence of the "invasion plasmid…… [Read More]

2. http://www.gbif.org/species/117114047

3.  http://www.sciencephoto.com/media/11549/view 

4.  http://www.ncbi.nlm.nih.gov/pubmed/19813213
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Coli and IT's Filamentous Morphology

Words: 916 Length: 3 Pages Document Type: Essay Paper #: 98976208

"Elimination of these and other pathogens from the lower respiratory tract is made possible by an effective innate immune response, which is necessary yet potentially dangerous to the infected host."

E. coli Outbreak:

There have been numerous E.coli outbreaks over the years. Pakalniskiene, Falkenhorst, Lisby, and Madsen (2009) studied one of the larger single source outbreaks. On November 11th, 2006, there was an outbreak in Greater Copenhagen, Denmark. The director of a high school had contacted the regional health authority to report an outbreak of diarrhea and vomiting among guests of a school dinner party. A total of 750 people, nearly all of the teachers and students at the school, had attended the dinner. The evening, the first people became sick. Three days later, when the director made the report, approximately 200 to 300 teachers and students had reported gastroenteritis. It was found that the fresh basil used in the…… [Read More]

References

Cegelski, L., Marshall, G., Eldridge, G., Hultgren, S. (Jan 2008). The biology and future prospects of antivirulence therapies. Nature Reviews: Microbiology. (6). Retrieved May 7, 2009, from Proquest.

Hacker, J. & Blum-Oehler, G. (2007). In appreciation of Theodor Escherich. Nature Reviews. Microbiology, 5(12) Retrieved May 7, 2009, from ProQuest.

Justice, S., Hunstad, D., Cegelski, L., & Hultgren, S. (2008). Morphological plasticity as a bacterial survival strategy. Nature Reviews. Microbiology, 6(2). Retrieved May 7, 2009, from ProQuest.

Pakaliniskiene, J., Falkenhorst, G., Lisby, M., Madsen, B., Olsen, K., Nielsen, E., Mygh, A., Boel, J., & Molbak, K. (2009). A foodborne outbreak of enterotoxigenic E. coli and Salmonella Anatum infection after a high-school dinner in Denmark, November 2006. Epidemiology and Infection, 137(3) Retrieved May 7, 2009, from ProQuest.
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Pseudomonas Aeruginosa

Words: 1496 Length: 5 Pages Document Type: Essay Paper #: 97332427

Psuedomonas Aeruginosa

Pseudomonas aeruginosa

Epidemiology

The Gram-negative, motile, rod-shaped bacterium Pseudomonas aeruginosa is an opportunistic killer that takes advantage of people suffering from medical problems (Van Delden and Iglewski, 1998).For this reason, P. aeruginosa is one of the most common nosocomial infection that occurs in hospitals. P. aeruginosa is responsible for causing 16% of pneumonia cases, 12% of urinary tract infections, 10% of bloodstream infections, and 8% of surgical infections due to hospital care. Patients who are immune-compromised are also susceptible to P. aeruginosa infections, such as patients undergoing chemotherapy, suffering from HIV / AIDS, recovering in burn units, and suffering from cystic fibrosis. With death rates ranging from 30 to 60% for these patients, P. aeruginosa is considered to be a significant threat to patient health.

Ecology

P. aeruginosa can switch between a free-swimming planktonic form and colonies enclosed within slime-protected biofilms attached to surfaces (Baltch and Smith, 1994,…… [Read More]

References

Baltch, A.L. And Smith, R.P. (Eds.). (1994). Pseudomonoas aeruginosa Infections and Treatment. New York, NY: Marcel Dekker, Inc.

Botzenhart, Konrad and Doring, Gerd. (1993). Ecology and Epidemiology of Pseudomonas aeruginosa. In M. Campa, M. Bendinelli, H. Friedman (Eds.), Pseudomonas aeruginosa as an Opportunistic Pathogen (pp. 1-18). New York, NY: Plenum Press.

Hawkey, Peter M. And Kerr, Kevin G. (2004). Laboratory investigation of health care-associated infection. In P. Hawkey and D. Lewis (Eds.), Medical Bacteriology: A Practical Approach (pp. 331-354). Oxford, UK: Oxford University Press.

Hurley, Matthew N., Camara, Miguel, and Smyth, Alan R. (2012). Novel approaches to the treatment of Pseudomonas aeruginosa infections in cystic fibrosis. European Respiratory Journal, published online ahead of print, 1-19. Retrieved 23 July 2012 from http://erj.ersjournals.com/content/early/2012/06/27/09031936.00042012.long.
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Geobacter in 1987 Derek Lovley

Words: 1257 Length: 4 Pages Document Type: Essay Paper #: 23154288

The stream of electrons passing through the external circuit generates a flow of electricity (Greer).

But, it's Geobacter's unique abilities that have allowed the reality of useful MFCs to come to fruition.

In the past, other microbes used for MFCs only converted a small percentage of the electrons available in their food into electricity. Geobacter processes electrons differently from other microbes though. Instead of transferring the electron byproducts into oxygen, Geobacter transfers their excess electrons to alternative electron acceptors, which makes them very efficient in transferring this power to the anode of an MFC.

Lovley had deemed this type of organism an "electricigen" and notes that Geobacter often converts 90% of the available electrons in their metabolic process (qtd. Greer).

In addition to this increased efficiency, Geobacter also eliminates the need for electron mediators needed when other microbes are utilized for MFCs. These artificial compounds are used to promote electron…… [Read More]

Works Cited

About Geobacter. 2008. Geobacter.org. December 4, 2008  http://www.geobacter.org/ .

Bacteria May Be Wiring Up the Soil." Nature. 26 Sept. 2007. Geobacter.org. December 4, 2008
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Oral Hygiene Methodology There Is a Significant

Words: 1736 Length: 5 Pages Document Type: Essay Paper #: 13409997

Oral Hygiene Methodology

There is a significant amount of research that shows statistical correlation between oropharyngeal bacterial colonization and the presence bacteria responsible for ventilator associated pneumonia (VAP). Several interventions have been shown as effective in reducing the incidence of VAP, but many have not gained widespread clinical use in a majority of hospitals. esearch does show that the amount of oropharyngeal bacteria present in the mouth and oral cavity has a relationship to the propensity of developing VAP. This is likely due to the lack of appropriate levels of oral hygiene combined with the bacterial colonization of ventilator equipment. We expect that oral and mouth washes regularly administrated that include chlorohexedine will kill bacteria and reduce incidence of VAP infections on ICU patients. The aim of this study will be to survey the efficacy of chlorohexdedine mouth washes in a randomized group of patients who were placed in an…… [Read More]

REFERENCES

Chlebicki, P., & Safdar, N. (2007). Topical chlorhexidine for prevention of ventilator-associated peneumonia: A Meta-analysis. Critical Care Medicine, 35(2), 595-602.

Collard, H., & Saint, S. (2005, June). Prevention of Ventilator Associated Pneumonia. Retrieved from ahrq.gov:  http://archive.ahrq.gov/clinic/ptsafety/pdf/chap17.pdf 

Dodek, P., et al. (2004). Evidence-Based Clinical Practice Guidelines for Prevention of Ventilator-Associated Pneumomia. Annals of Internal Medicine, 141(4), 305-13.

Lansford, T., et al. (2007). Efficacy of a Pneumonia Prevention Protocol in the Reduction of Ventilatory-Associated Pneumonia in Trauma Patients. Liebert Open Access- Surgical Infections. 8 (5): 5505-10.
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Plant Biology

Words: 714 Length: 2 Pages Document Type: Essay Paper #: 60446131

Plant Biology

Shoot architecture enhances photosynthesis largely by maximizing the ability of the plant to get sunlight. Obviously light is the crucial resource in photosynthesis, but different plants obtain the resource in different ways. For example, the basic arrangement of leaves on the plant stem (known as "phyllotaxy") is different for every species of plant -- however, in all of these cases the plant has evolved so that the emergence of leaves does not block the available light for leaves above or below. The evolutionary reason for this should be obvious: as leaves exist purely to facilitate photosynthesis, the production of leaves that underperform due to inadequate access to sunlight would be a waste of the plant's resources. We can also see the evolutionary imperative expressed in leaf size: in cold or dry environments without much access to liquid water, the leaf size is drastically shrunken in an attempt to…… [Read More]

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Community Health Middle School Officials Have Been

Words: 895 Length: 3 Pages Document Type: Essay Paper #: 22683436

Community Health

Middle school officials have been reporting a rash of mysterious absences recently. Upon examining information given by those officials and corellated by health department staff there appears to be a pattern to the absences. In the month of April there were only minor similarities in time and occurence of these absences in two schools. In contrast, in the month of May there were quite a few absences in two of the schools, Jackson and Truman, but not in the others.

The similarities first appear in the period of late April to early May, but those are few in number. The spike in absences occurs in May, from the 19th to 25th. There are two hypotheses for these occurences. The first hypotheses is that the absences are due to something as simple as the common cold. The second hypotheses for the spike in absenses is food poisoning or a…… [Read More]

References

Community Health dept. Intranet Kaplan.edu

Food Poisoning. Retrieved April 28, 2011 from: http://www.livestrong.com/article/17793-common-causes-poisoning/#ixzz1E6UcQg57

West Nile Virus. Retrieved April 28, 2011 from: http://www.cdc.gov/ncidod/dvbid/westnile/index.htm

Community Health
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Justification Assessment of Proteome Changes

Words: 1822 Length: 7 Pages Document Type: Essay Paper #: 18669217

efining other techniques is laudable and important, but is not the domain of the proposed research. In addition, the mixed methods use of both mass spectrometry and bioinformatics methodologies is logically called fro due to the volume of data the mass spectrometry is expected to generate and the time consuming nature of any other mode of analysis save those available through specialized bioinformatics programs (Kuamr & Mann, 2009).

Conclusion

The selection of the model bacterial strain and of the previously validated antibiotic agent will be important considerations for this research, and will have a direct impact on the applicability of the results in other areas of research. Selection should be made on a basis of practicality not only in the ability to carry out the research, but also in light of how the findings can and might actually be applied. There are no real ethical implications that need to be…… [Read More]

References

Aebersold, R. & Mann, M. (2003). Mass spectrometry-based proteomics. Nature 422: 198-207.

Aldred, S., Grant, M. & Griffiths, H. (2004). The use of proteomics for the assessment of clinical samples in research. Clinical Biochemistry 37(11): 943-52.

Freiberg, C., Brotz-Oesterhelt, H. & Labischinski, H. (2004). The impact of transcriptome and proteome analyses on antibiotic drug discovery. Current Opinion in Microbiology 7(5): 451-9.

Kuiper, H., Kok, E. & Engel, K. (2003). Exploitation of molecular profiling techniques for GM food safety assessment. Current Opinion in Biotechnology 14(2): 238-43.
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Direct Examination of Subjects for

Words: 962 Length: 3 Pages Document Type: Essay Paper #: 80339430



Instruments

Instrumentation needed for the research study will be relatively minimal and straightforward; necessary equipment for a standard checkup to determine cardiovascular health and other basic signs of chronic disease as well as scrapers, swabs, and vials for the collection of bacterial samples will be needed. It is possible that culturing of the bacterial samples will be desired, in which case additional instruments and controlled environment equipment will also be needed for the full completion of the study. In order to assess the exclusionary criteria related to weight, a standard scale and height ruler will need to be utilized along with caliper measurements to determine body mass index. Other than this and the instruments necessary for recording and analyzing the data collected using these instruments, it is not expected that any other resources will be necessary for this research study.

Procedure

ollowing initial measurements to determine suitability for inclusion in…… [Read More]

Following these general examinations and the more extensive examinations of cardiovascular health, specifically identified areas in participants' mouths will be variously swabbed or scraped to obtain bacteria samples, and levels of bacteria in these areas and in the mouth as a whole will be measured using a variety of techniques. If necessary, the bacteria collected through this direct methodology will be cultured in an appropriate lab setting using standard equipment, with twenty-four hours being sufficient time for the culture to grow to be identifiable in most instances. Examination of bacteria types, growth patterns in the mouth, and correlation with cardiovascular disease will be identifiable with the data collected via these methods, enabling appropriate analysis and a determination of correlation.

Data Analysis

The latest available version of SPSS software operated by an experienced statistician, under the observation and supervision of the lead researcher, will be utilized to analyze the raw data collected in this study. Specifically, regression analyses will be utilized in order to determine the correlation, if any, that exists between the existence of certain types or levels of bacteria in the mouth or in certain areas of the mouth and cardiovascular disease. The Mann-Whitney test will also be used to determine which if any variables are statistically different between the participant group with cardiovascular disease and those without. Again, this is in keeping with similarly designed studies already successfully completed (Johansson et al. 2008).
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Whooping Cough Known Medically as

Words: 1747 Length: 6 Pages Document Type: Essay Paper #: 46415890

Because some children have developed brain damage after the immunizations, some parents are concerned that the vaccine is responsible for neurologic impairment, however research does not indicate a definitive link between the pertussis vaccine and brain damage, although research is still ongoing (hooping 2005). Yet, as a precaution, children with a history of seizures or brain disorders may not be proper candidates for the DTaP vaccine (hooping 2005).

2001 study revealed that pertussis was the cause of chronic cough in 19.9% of the patients studied. Once a disease that ravaged children worldwide, whooping cough is once again on the rise (Green 2002). Today, approximately 300,000 children worldwide die every year from whooping cough, usually in areas where immunization rates are low (Green 2002). Nonetheless, even in the United States, where immunization rates are high, roughly 1 out of every 200 babies who get whooping cough will die from it, another…… [Read More]

Works Cited

Green, Alan. (2002). Pertussis. Retrieved September 18, 2006 at http://www.drgreene.com/21_1155.html

Whooping Cough. (2005). Mayo Clinic. Retrieved September 18, 2006 at http://www.mayoclinic.com/health/whooping-cough/DS00445/DSECTION=3

Whooping Cough. (2006). MedlinePlus: U.S. National Library of Medicine and the National Institutes of Health. Retrieved September 18, 2006 at http://www.nlm.nih.gov/medlineplus/whoopingcough.html

Whooping cough a continuing problem. (2002, June 29). British Medical Journal.
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Natural Selection First Described in Full by

Words: 593 Length: 2 Pages Document Type: Essay Paper #: 69618589

Natural Selection

First described in full by Charles Darwin, natural selection refers to the process by which organisms evolve by adapting to their environments. Natural selection does not occur instantly in response to an environmental change, however. Rather, natural selection occurs over the course of several successive generations. Those organisms that successfully survive the environmental changes due to their inherited traits will pass on their genes to their offspring. Thus, only those organisms with hardy genes will survive; hence the phrase "survival of the fittest." While natural selection does occur unaided by human beings in the natural world, humans are beginning to alter the course of natural evolution through the creation and implementation of certain chemical products. Moreover, environmental pollution and other human factors impact the process of natural selection and evolution in the plant and animal kingdoms. Chemical products such as antibiotics, pesticides, and herbicides in particular threaten to…… [Read More]

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Organic Evolution Please Discuss the

Words: 4338 Length: 12 Pages Document Type: Essay Paper #: 43722112



Noncoding DNA, also known as "junk DNA" describes portions of the DNA sequence that do not appear to have any presentable use -- they do not encode for proteins, etc. In fact, in a most eukaryote cells, a rather large percentage of the total genome is noncoding DNA, but this varies between species. However, it is now a misnomer to call this material "junk," because the more sophisticated we become at biochemistry, we find that many do have subtle biological functions, including the transcriptional and translational regulation of certain protein-coding sequences. esearchers also belive that other noncoding sequences have a likely, but unconfirmed function, as an inference from high levels of inherited tratis and natural selection processes (Masters, 2005, 163-5).

esearchers know that the amount of genomic DNA varies widely between organisms, as does the proportion of coding and non-coding DNA within these genomes. For instance, 98% of the human…… [Read More]

REFERENCES:

Barrows, E. (2001). Animal Behavior Desk Reference. Boca Raton, FL: CRC Press.

Mueller, Guo and Ayala. (1991). Density Dependent natural Selction and Trade-Offs in Life History Traits. Science, 253(1), 433-35.

Ricklefs and Whiles. (2007). The Economy of Nature: Data Analysis Update. New York: Macmillan.
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Esbls Prevention and Education Extended Spectrum Beta-Lactamase

Words: 745 Length: 3 Pages Document Type: Essay Paper #: 95148570

ESBLs Prevention and Education

Extended spectrum beta-lactamase producers (ESBLs) are antibiotic-resistant bacteria that can colonize internally before spreading and/or present as infections that are very difficult to treat du to the protective nature of the ESBL substance itself (AHS, n.d.; CARA, n.d.). ESBL is capable of breaking down antibiotics and thus protecting the producing bacteria, allowing them to continue to thrive and reproduce despite the administering of traditional treatments. For this reason, prevention of such infections is of paramount importance, yet practices that effectively work towards such prevention are not as widespread as would be desirable (AHS, n.d.; Durham, 2006). The following education plan aims to address identified knowledge needs and so reduce rates of ESBLs infections and their negative effects on patient outcomes.

Knowledge Needs Assessment

Though the nursing staff examined for this education project is well qualified and highly educated, there is a definite lack of knowledge regarding…… [Read More]

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Botulism Is a Disease That

Words: 1941 Length: 6 Pages Document Type: Essay Paper #: 46412724



In this instance, what started out as a religious ceremony among villages went very wrong and could have caused deaths; hence, the authors' points are potentially helpful in the future when outbreaks like this occur.

hat are the Benefits of Botulinum Toxin?

hile it is widely known that there are dangers associated with botulinum toxin, and with botulism, Ashley Henshaw writes in Symptom Find that there are a "…variety of medical and cosmetic procedures" that are helpful for humans. In the 1950s, research began into potential positive uses for the botulinum toxin, and in the 1970s, Henshaw writes, the toxin was used with success on humans "…to temporarily paralyze specific muscle impulses" (Henshaw, 2012, p. 2). Some of the cosmetic uses include: a) certain eye conditions (like crossed eyes and "uncontrollable blinking") can be treated by "injecting botulinum toxin"; b) "upper motor neuron syndrome" (when certain muscles are not able…… [Read More]

Works Cited

Aldis, W., Braden, C.R., Chunsuttiwat, S., Olsen, S.J., Ueno, K., and Ungchusak, K. (2007).

The need for global planned mobilization of essential medicine: lessons from a massive Thai botulism outbreak. Bulletin of the World Health Organization, 85(3), 238-241.

Centers for Disease Control and Prevention. (2006). There are three main kinds of botulism.

Retrieved July 4, 2012, from  http://emergency.cdc.gov/agent/botulism/factsheet.asp .
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Fantastic Voyage

Words: 1266 Length: 4 Pages Document Type: Essay Paper #: 77807088

Fantastic Voyage

[hs130, section: ____ ]

I walked into my office at 8:00 AM with an empty mind. I was worried about the transmission that I needed to air in two days. When my boss asked me that morning about what the transmission would be, I lied and said, "Let that be a surprise!" I quickly logged online for ideas. Just then, I was interrupted by a man who wanted to speak to me. Annoyed at his persistent nagging, I grabbed my camera and decided to follow him to where he wanted to take me. During our ride, he asked me the most bizarre question, "can you film inside a patient? The doctors can't seem to understand what's going on in her body." My reaction was rather quick and loud, "Are you insane?" He pointed to a medium sized box in his backpack, "Whenever you're ready!"

He escorted me to…… [Read More]

REFERENCES:

Hansen, J.T., Koeppen, B.M., & Netter, F.H. (2002). Netter's atlas of human physiology. (5th ed., p 246 -249) Teterboro, N.J: Icon Learning Systems.

Kumar, V., Abbas, A., & Fausto, N. (2010) Robbins Basic Pathology. (8th ed., p 25-60) Philadelphia: Saunders.
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Chemical and Biological Terrorism

Words: 3146 Length: 10 Pages Document Type: Essay Paper #: 22730564

Chemical and Biological Terroism

Biological and Chemical Terrorism Prevention

The United States Government has identified the potential of chemical, biological, radiological and/or nuclear (termed CBN) terrorism, especially after the September 11 attacks. They have been concerned ever since Sarin was used in a Tokyo subway (Aum Shinrikyo in 1995) and the anthrax case (in November 2001). The chances of terrorists resorting to these agents in warfare are pretty high considering their advantages over conventional methods. Most organizations fighting terrorism are not equipped well enough to detect such chemicals. A closed container can help most of them escape discovery. The low cost involved in their production increases the dangers manifold. Since most of the above agents affect the human body directly, they are essentially more efficient than conventional warfare.

Chemical weapons have four major classifications. Choking agents are aimed at being fatal and are easily accessible. Phosgene is one such industrial…… [Read More]

References

Khan, A. Levitt, A. Sage, M. (2000). Centers for Disease Control and Prevention. Biological and Chemical Terrorism: Strategic Plan for Preparedness and Response. 7-19. Retrieved From  http://www.southernnevadahealthdistrict.org/download/epi/mmwr-plan.pdf 

Ashraf H. European dioxin-contaminated food crisis grows and grows [news]. Lancet

1999;353:2049.

Khan, A. Swerdlow, D. Juranek, D. (2001) Precautions Against Biological and Chemical Terrorism directed at Food and Water Supplies. Retrieved from  http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1497290/pdf/11571403.pdf
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Norovirus Etiology Epidemiology and Prevention Norovirus Acute

Words: 717 Length: 2 Pages Document Type: Essay Paper #: 46726477

Norovirus Etiology, Epidemiology, And Prevention

Norovirus

Acute gastroenteritis (diarrhea) can be caused by viruses, bacteria, and parasites, but in the United States the most common cause is the norovirus (CDC, 2012b). The norovirus contributes to 800 deaths and 70,000 hospitalizations in the U.S. each year, but unless a person is elderly, very young, severely ill, or immunocompromised, most people suffer only minor symptoms. Since the estimated U.S. health care burden of norovirus infections around $2 billion annually (CDC, 2012a), this report will examine what is known about norovirus etiology and how these infections can be prevented.

Norovirus Etiology, Epidemiology, and Prevention

The norovirus belongs to the virus family Caliciviridae and contains a single-stranded NA genome encased within an envelope-free protein isocahedral capsid (Morillo and Timenetsky, 2011). Based on recent sequencing information, noroviruses can be grouped into five genogroups: G1, GII, GIII, GIV, and GV. Only GI, GII, and GIII infect…… [Read More]

References

CDC (Centers for Disease Control and Prevention). (2012a). Burden of norovirus illness and outbreaks. CDC.gov. Retrieved 19 Sep. 2012 from   http://www.cdc.gov/norovirus/ php/illness-outbreaks.html .

CDC (Centers for Disease Control and Prevention). (2012b). Norovirus. CDC.gov. Retrieved 19 Sep. 2012 from
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Weapons of Mass Destruction and the Next

Words: 5067 Length: 13 Pages Document Type: Essay Paper #: 10464176

Weapons of Mass Destruction and the Next Terror: Assessment of How a Significant Terrorist WMD Attack Might e Conducted by a Non-State Actors Perpetrator and Why They Can't Stage an Attack

Weapons of Mass Destructions (WMD) have considerable effect to the economies of both developed and developing countries. In the modern world, most terror groups have resolved to use Weapons of Mass Destruction to harm their enemies. The entire syndicate comprises state actors and the terror group, which intends to destroy the target country. The state actors have direct links or channels of communication with such attackers, foreign allies, and several residential alliances with almost similar connections to the terror groups. Most of the terror groups lack essential materials that would aid in the making of some of the most dangerous weapons such as nuclear bombs. The various forms of attack involved when using lethal weapons include dispersion, dissemination, and…… [Read More]

Bibliography

Anthony Cordesman, Terrorism Asymmetric Warfare, and Weapons of Mass Destruction, (New

York:

Greenwood Publishing Group, 2002).

Eric Croddy, James Wirtz, Weapons of Mass Destruction, (London: ABC-CLIO, 2005).
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Alcohol vs Traditional Scrub-Down

Words: 870 Length: 3 Pages Document Type: Essay Paper #: 68780030

United States or Europe but there are a few outliers. First off, Sharma et al. (2013) is written from an Indian perspective. Further, Salmon et al. (2014) directly references Vietnamese hospitals but is written in a clearly labeled American journal while Zaragoza et al. (1999) and its study was set in Barcelona. Girou et al. (2002) appears in a British journal. Zaragoza et al. is in an American Journal. The basic comparison that is prevalent in all of the journal articles at one level or another is the comparison in results and cleanliness between traditional soap scrub downs and alcohol-based solutions being used in those same scrubbing sessions. The comparisons being made were based on the efficacy of the hand-washing solution, the time it took to do each washing solution and so forth. For example, Chow et al. (2012) looked at both. It actually compared three protocols in total, those…… [Read More]

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Treatment to Patients the Main Objective of

Words: 4516 Length: 15 Pages Document Type: Essay Paper #: 23316992

Treatment to Patients

The main objective of providing treatment to patients is to relieve symptoms along with decreasing the progression of the disease as well as the mortality or morbidity. However, in some cases, this objective is not fully achieved, especially in the case of the patients who are admitted to the ICU with some serious and almost always a terminal stage of the disease. For example, when old patients are admitted in the ICU, their immunity is extremely low and this is the perfect time for the opportunistic infections to make matters worse for these patients. There are many infections that are specifically associated with patients admitted in the hospitals. Pseudomonas Aurigeonosa is a micro-organism that is well documented to cause bacterial pneumonia and bacteremia in the patients who are terminally ill and are receiving treatment in the hospital setting. Since most of the patients in the ICU are…… [Read More]

Bibliography:

Beekmann, SE;Diekema, DJ; Chapin, KC;Doern, GV (2003) Effects of rapid detection of bloodstream infections on length of hospitalization and hospital charges.J ClinMicrobiol, 41:3119-3125.

Boussekey, N, Leroy, O, Georges, H, Devos, P, d'Escrivan, T, Guery, B (2005).Diagnostic and prognostic values of admission procalcitonin levels in community-acquired pneumonia in an intensive care unit.Infection, 33:257-263.

Charles, PE, Dalle, F, Aho, S, Quenot, JP, Doise, JM, Aube, H, Olsson, NO, Blettery, B: Serum procalcitonin measurement contribution to the early diagnosis of candidemia in critically ill patients. Intensive Care Med, 32:1577-1583.

Digiovine, B; Chenoweth, C; Watts, C; Higgins, M (1999)The attributable mortality and costs of primary nosocomial bloodstream infections in the intensive care unit. Am J. RespirCrit Care Med, 160:976-981.