نتایج جستجو برای: corrosive effect
تعداد نتایج: 1644035 فیلتر نتایج به سال:
Introduction The clinical laboratory is regularly faced with the task of establishing the causes of non-diabetic melituria. These causes may be: physiological for neonates ], caused by hereditary defects of carbohydrate metabolism [2], brought about by congenital or acquired deficiencies of disaccharidases.[3], or an abnormal sugar excretion may be found with enteritis [4]. The necessary analys...
Corrosive ingestion is a rare but potentially devastating event and, despite the availability of effective preventive public health strategies, injuries continue to occur. Most clinicians have limited personal experience and rely on guidelines; however, uncertainty persists about best clinical practice. Ingestions range from mild cases with no injury to severe cases with full thickness necrosis...
Thermochemical cycles that split water into stoichiometric amounts of hydrogen and oxygen below 1,000 °C, and do not involve toxic or corrosive intermediates, are highly desirable because they can convert heat into chemical energy in the form of hydrogen. We report a manganese-based thermochemical cycle with a highest operating temperature of 850 °C that is completely recyclable and does not in...
~ by Carrie Wyse, Tadaharu Watanabe, Dan Fraenkel, Robert Torres and Virginia Houlding particle filters. This helps minimize corrosion and degradation of expensive components, and removes particles shed due to mechanical devices (e.g. valves). However, moisture purifiers do not eliminate the problem of molecular metal contaminants, which pass through particle filters. Corrosive gases, such as H...
Chronic corrosive strictures of the upper cervical esophagus and hypopharynx resulting from ingestion of caustic substances are a challenging surgical entity when repeated endoscopic dilatations fail to yield satisfactory results. Restoring the continuity of the upper digestive tract by esophageal substitution at healthy tissue margins not only compromises the integrity of the swallowing mechan...
Corrosive damages can lead to accidents on pipelines in various industries. Therefore, the main objective of work is study peculiarities propagation internal corrosion turning angles steel pipes. The paper substantiates primary importance It has been identified that curvilinear areas, rate depends fluid flow, number ions, and also effect centrifugal force. authors studied average turns Thus, re...
In this study, the salt weathering effects on engineering properties and weight loss potential of three types of granitoid rocks were investigated. Sodium and magnesium sulfates tests were performed on core and aggregate samples. The cyclic salt weathering tests on core samples were done up to 90 cycles, while these tests on aggregate samples were done up to 40 cycles. The results showed that d...
This paper selects 6 gasoline detergent synergists and diesel that are mainstream in the market. The changes mass, volume, hardness, size surface morphology of main components engine fuel supply system after being immersed containing for 28 days were studied,and these compared with benchmark fuel. results show most have almost no corrosive effect on or close to reference fuel, but some a slight...
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