Xem 1-20 trên 202 kết quả Mechanism causing
  • Pro Engineer is a 3D-CAD software for designing graphics for the motion simulation in mechanical design, mechatronics, mechanical power, automation ... To Investigate the interference, the assembly model will be cut at location where the interference occurred. The amount of interference will be measured, then fixed by changing the dimensions of the part that Causes the interference.

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  • Amidst the many advantages of gas turbine (GT) combined cycles (CC) popular today from various standpoints (lower investment than for new greenfield plants, reduced environmental impact, and faster installation and startup), one drawback is that the achievable output decreases significantly as the ambient inlet air temperature increases. The lower density of warm air reduces mass flow through the GT. And, unfortunately, hot weather typically corresponds to peak power loads in many areas. So the need to meet peak-load and power-sales contract requirements causes many ...

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  • Harrison's Internal Medicine Chapter 132. Infections Caused by Listeria monocytogenes Infections Caused by Listeria monocytogenes: Introduction Listeria monocytogenes is a food-borne pathogen that can cause serious infections, particularly in pregnant women and immunocompromised individuals. A ubiquitous saprophytic environmental bacterium, L. monocytogenes is also a pathogen with a broad host range. Humans are probably accidental hosts for this microorganism. L.

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  • Today, the term reliability is part of our everyday language, especially when speaking about the functionality of a product. A very reliable product is a product that fulfils its function at all times and under all operating conditions. The technical definition for reliability differs only slightly by expanding this common definition by probability: reliability is the probability that a product does not fail under given functional und environmental conditions during a defined period of time (VDI guidelines 4001).

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  • Tham khảo sách 'root cause failure analysis plant engineering maintenance series vibration fundamentals r. keith', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Harrison's Internal Medicine Chapter 114. Molecular Mechanisms of Microbial Pathogenesis Molecular Mechanisms of Microbial Pathogenesis: Introduction Over the past three decades, molecular studies of the pathogenesis of microorganisms have yielded an explosion of information about the various microbial and host molecules that contribute to the processes of infection and disease.

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  • Encounters with Phagocytes Phagocytosis and Inflammation Phagocytosis of microbes is a major innate host defense that limits the growth and spread of pathogens. Phagocytes appear rapidly at sites of infection in conjunction with the initiation of inflammation. Ingestion of microbes by both tissue-fixed macrophages and migrating phagocytes probably accounts for the limited ability of most microbial agents to cause disease.

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  • Invasion Many diseases are caused primarily by pathogens growing in tissue sites that are normally sterile. Pneumococcal pneumonia is mostly attributable to the growth of S. pneumoniae in the lung and the attendant host inflammatory response, although specific factors that enhance this process (e.g., pneumolysin) may be responsible for some of the pathogenic potential of the pneumococcus. Disease that follows bacteremia and invasion of the meninges by meningitisproducing bacteria such as N. meningitidis, H. influenzae, E.

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  • Chronic venous disease of the lower limbs is manifested by a range of signs, the most obvious of which are varicose veins and venous ulcers. However, the signs also include edema, venous eczema, hyperpigmentation of skin of the ankle, atrophie blanche (white scar tissue), and lipodermatosclerosis (induration caused by fibrosis of the subcutaneous fat) (Fig. 1). Considerable progress has been made in understanding the mechanisms that underlie these diverse manifestations, in particular the role of inflammation. This article reviews these advances and places them in a clinical context....

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  • Coronary heart disease is the leading cause of death worldwide, and 3.8 million men and 3.4 million women die of the disease each year. After an acute myocardial infarction, early and successful myocardial reperfusion with the use of thrombolytic therapy or primary percutaneous coronary intervention (PCI) is the most effective strategy for reducing the size of a myocardial infarct and improving the clinical outcome. The process of restoring blood flow to the ischemic myocardium, however, can induce injury.

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  • Nanotechnologies have already attracted massive interest in multiple fields of science and industry. In the past decades, we have witnessed the progress in micro-level experimental techniques that revolutionize the material science. Designing new materials based on the knowledge of mechanics of their building blocks and microstructure manipulations at nanometer scale have become a reality. Nanoindentation, as a leading micro-level mechanical testing technique, has attracted wide attention in numerous research fields and applications....

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  • Tham khảo sách 'root cause failure analysis 2010', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • When man invented the wheel, he very quickly learned that if it wasn’t completely round and if it didn’t rotate evenly about it’s central axis, then he had a problem! The wheel would vibrate, causing damage to itself and it’s support mechanism and in severe cases, be unusable. As the task of manufacturing a replacement was so huge and time consuming, a method had to be found to minimize the problem. Research showed that the wheel and its shaft had to be in a state of balance, i.e.

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  • Although bamboo fibers have well mechanical properties but they are brittle caused impossibility to make fabric like jute of flax fibers. Two kinds of bamboo fibers, having industrial application are short fiber and long fiber for making mat. Polypropylene (PP)-short bamboo fiber composites have been carried out research systematically in Polymer Centre of Hanoi University.

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  • Tuberculosis (TB), a disease of great antiquity continues to be a major public health problem worldwide. One-third of the world’s over six billion population is infected with the tubercle bacilli with over two million deaths annually1. The available data on TB in Ghana indicate that the disease burden is high and TB remains an important cause of major disability and death in the country2.

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  • (BQ) Part 1 book "Acne causes and practical management" presents the following contents: The three acnes and their impact, the folliculopilosebaceous unit—the normal FPSU, pathogenetic mechanisms summarized, the acne hormones, exogenous acnegens and acneform eruptions.

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  • The steady increase in industrialization, urbanization and enormous population growth are leading to production of huge quantities of wastewaters that may frequently cause environmental hazards. Raw or treated waste water is very oft en discharged to freshwaters and results in changing ecological performance and biological diversity of these systems. About 70% of water supplied ends up as wastewater and several natural water reservoirs are being contaminated by untreated sewage/industrial effl uents. This makes waste water treatment and waste water reduction very important issues....

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  • Operating / Parts Information You must be familiar with the operation of this machine before you attempt to troubleshoot or make any repairs to it. Basic operating and maintenance procedures are described in the Operator’s Manual supplied with the machine. Keep a copy of it with the machine at all times. Use the separate Parts Book supplied with the machine to order replacement parts. If either of the documents becomes lost, please contact Wacker Corporation to order a replacement.

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  • Stop Producing Chaos – a cry from the heart! When the great guru of quality management and process improvement W. Edwards Deming died at the age of 93 at the end of 1993, the last words on his lips must have been ‘Management still doesn’t understand process variation’. Despite all his efforts and those of his followers, including me, we still find managers in manufacturing, sales, marketing, finance, service and public sector organizations all over the world reacting (badly) to information and data.

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  • Risks pervade our life and can have an impact at individual, business and social levels. Science and technology, medicine, transport, economics and environment are examples of fields where various kind of risks can arise, eventually causing serious damages if not properly controlled and managed. If we consider economics, we can argue that enterprises need to compete in order to survive thus incurring in several kinds of risks such as legal, operational and financial ones.

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