Xem 1-20 trên 278 kết quả Organic cause
  • Immune Response The innate and acquired immune responses to L. monocytogenes have been studied extensively in mice. Shortly after IV injection, most bacteria are found in Kupffer cells in the liver, with some organisms in splenic macrophages. Listeriae that survive the bactericidal activity of initially infected macrophages grow in the cytosol and spread from cell to cell. In the liver, the result is infection of hepatocytes. Neutrophils are crucial to host defense during the first 24 h of infection, while influx of activated macrophages from the bone marrow is critical subsequently.

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  • Organic pollutants cause several environmental problems if discharged to air or water body. The occurrence of organic pollutants in the ecosystem, their risk and removal methods are very important issues .This book deals with several aspects of organic pollutants, especially in the light of organic pollutants monitoring, risk assessment as well as the practical application of different techniques for removing it from the environment.

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  • Lecture Cause and effect essay presented: Definition cause and effect essay, how to write thesis statement, organization, sentence patterns and language materials. Invite you to read the lecture.

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  • The presence of substances in groundwater may be affected by naturally occurring processes as well as by actions directly associated with human activities. Naturally occurring processes such as decomposition of organic material in soils or leaching of mineral deposits can result in increased concentrations of several substances. Those of health concern include arsenic, fluoride, selenium, uranium, nitrate, metals, and radionuclides such as radon. Problems of aesthetic quality and acceptance may be caused by iron, manganese, sulphate, chloride and organic matter. ...

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  • Other Nondiphtherial Corynebacteria C. xerosis is a human commensal found in the conjunctiva, nasopharynx, and skin. This nontoxigenic organism is occasionally identified as a source of invasive infection in immunocompromised or postoperative patients and prosthetic joint recipients. C. striatum is found in the anterior nares and on the skin, face, and upper torso of normal individuals. Also nontoxigenic, this organism has been associated with invasive opportunistic infections in severely ill or immunocompromised patients. C.

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  • Pathogenesis and Immunology Diphtheria toxin, produced by toxigenic strains of C. diphtheriae, is the primary virulence factor in clinical disease. The toxin is synthesized in precursor form; is released as a 535-amino-acid, single-chain protein; and has an LD50 of ~100 ng/kg of body weight. The toxin is produced in the pseudomembranous lesion and is taken up into the bloodstream, through which it is distributed to all organ systems.

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  • Clinical Manifestations Respiratory Diphtheria The clinical diagnosis of diphtheria is based on the constellation of sore throat; adherent tonsillar, pharyngeal, or nasal pseudomembranous lesions; and low-grade fever. In addition, diagnosis requires the isolation of C. diphtheriae or the histopathologic isolation of compatible gram-positive organisms.

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  • Microbiology and Laboratory Diagnosis These organisms are non-acid-fast, catalase-positive, aerobic or facultatively anaerobic bacilli. Their colonial morphologies vary widely; some species are small and α-hemolytic (similar to lactobacilli), whereas others form large white colonies (similar to yeasts). Many nondiphtherial coryneforms require special medium (e.g., Löffler's, Tinsdale's, or telluride medium) for growth. Epidemiology Humans are the natural reservoirs for several nondiphtherial coryneforms, including C. xerosis, C. pseudodiphtheriticum, C. striatum, C.

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  • About a year ago I was asked by a firm of insurance loss adjusters to investigate the possibility of reducing the anticipated overrrun caused by an explosion at a power stayion. Based on previous experienxe of similar problems.

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  • A compound consisting of an alkyl group and the functional group -OH is an alcohol. The identity of an individual alcohol depends on the identity of R, the alkyl group. For example, when R is the methyl group, we have CH30H. This is methyl alcohol or methanol, also known as wood alcohol. It is highly toxic and can cause blindness or even death in relatively small doses. When R is the ethyl group, we have CH3CH20H. This is ethyl alcohol or ethanol. Ethanol is the alcohol in alcoholic beverages. When R is the isopropyl group, we have (CH3)2CHOH. This is isopropyl alcohol.

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  • Six Sigma is one of the most important and popular developments in the quality field. It has saved huge amounts of money and improved the customer experience for a large number of organizations across the world, yet it is applied in an inconsistent and often reductive fashion in many companies. This has led to criticism in the literature and a number of abandoned implementations. This study guide is designed to provide an overview of the key elements, important historical context and current debates in the field of Six Sigma. It aims to give a coherent view of the underlying principles,...

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  • The notion of environmental damage is a rather recent development in tort law on both a national and an international level. Constant degradation of environmental goods, such as air, water and wildlife, by emissions and old dumpsites and spectacular industrial accidents causing pollution created a new awareness by the public of the environment. National legislation and new international treaties show that tort liability is attributed an increasing role in the protection of the environment by decision-makers.

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  • This is a new and fully revised edition of Jeffrey and Leach: Atlas of Medical Helminthology and Protozoology . Helminths (worms) and similar parasites are a major medical problem in much of the world and perhaps the largest single cause of morbidity and mortality (eg malaria, elephantiasis, trypanosmiasis). The diagnosis of these conditions still largely rests on the microscopic examination of, for example, faeces. This atlas illustrates the different myriad of different organisms and how to identify them. The atlas covers all helminths and protozoa of medical importance.

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  • At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity

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  • Solid waste management is one of the important disciplines of environmental management. It is divided into two parts, dealing with biodegradable and nonbiodegradable waste. The segregation of waste in most developing countries is a difficult task. This problem has a wide range of causes, including the lack of public knowledge of the problem. Lack of funds plays a small but very vital role.

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  • For some time, the University of California Berkeley Roundtable on the International Economy (BRIE) has been examining regionalism in the Asia- Pacific and Western Europe (see ). Much of the extant literature on this topic has focused on the causes and consequences of formal inter-governmental agreements. BRIE’s research, led by Michael Borrus, Dieter Ernst, and John Zysman, paid greater attention to the underlying corporate decisions and new organizational forms that have driven integration at the level of the market.

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  • Safety training will be presented by the Design-Builder’s Safety Manager. Safety training includes orientation training, daily “Short course” field toolbox meetings, a monthly “Stand down” safety meeting, and as-needed training such as railroad safety training. Design quality training is presented by the DQAM. There may be different versions: one for the management staff to understand the quality requirements of design; another is for design staff to develop a detailed understanding of the quality process.

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  • PART 3 Further issues and future prospects © 2001 C. H. Walker CHAPTER 13 The ecotoxicological effects of herbicides 13.1 Introduction Chapters 5–12 deal with groups of pollutants that have been studied in some depth and detail, largely because they have appreciable – sometimes very high – mammalian toxicity and are perceived as human health hazards. Some of them are markedly persistent and undergo biomagnification with passage along food chains.

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  • In 1998, a highly innovative film, Antz, directed by Eric Darnell and Tim Johnson, was released. In the first scene of the movie, Ant Z 4195 is talking to his psychoanalyst and saying: “…and my job, don’t get me started on, cause it really annoys me…I feel physically inadequate, I, I, my whole life I’ve never been able to lift 10 times my own body weight and when you get down to it, handling dirt is…yuck, you know is not my idea of a rewarding career. It’s this whole gung-ho super-organism thing that I, I, you know I can’t get, I try but I can’t get it....

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  • Water pollution is a major global problem that requires ongoing evaluation and revision of water resource policy at all levels (from international down to individual aquifers and wells). It has been suggested that it is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily.

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