نتایج جستجو برای: acidic environment
تعداد نتایج: 549975 فیلتر نتایج به سال:
The proton exchange membrane (PEM) water electrolysis is one of the most promising hydrogen production techniques. oxygen evolution reaction (OER) occurring at anode dominates overall efficiency. Developing active and robust electrocatalysts for OER in acid a longstanding challenge PEM electrolyzers. Most catalysts show unsatisfied stability under strong acidic oxidative conditions. Such also l...
The objective of this paper is to study the surface texture behavior low and medium-carbon steels machine elements in acidic environment using Abbott Firestone curve depending upon MATLAB software. chemical composition low-carbon steel 0.16C-0.27Si-1.47Mn-0.02Al while 0.49C-0.30Si-0.91Mn-0.03Al. They were hot-rolled at 1200°C for 30 min followed by air cooling. Two different heat treatment proc...
Grafical abstract of the different biofilms studied, LTSEM images structural details and associated values elastic modulus, Gc′, cohesive energy, Ec. Scale bar = 20 μm.
Introduction:Acidic sludge is a by-product of used motor-oil reprocessing industries which is disposed of in the environment as hazardous waste material. The polymer bitumen under certain conditions is produced from mixing Bentonite soil, polymer styrene - butadiene – styrene(SBS) and acidic sludge.The aim of this study was retrieval of acidic sludge from polymer bitumen using additives such a...
OBJECTIVE The aim of this study was to compare the effect of an acidic environment on dislocation resistance (push-out bond strength) of EndoSequence Root Repair Material (ERRM putty and ERRM paste), a new bioceramic-based material, to that of mineral tri-oxide aggregate (MTA). MATERIALS AND METHODS One-hundred twenty root dentin slices with standardized canal spaces were divided into 6 group...
Tumors often are associated with a low extracellular pH, which induces a variety of cellular events. However, the mechanisms by which tumor cells recognize and react to the acidic environment have not been fully elucidated. T-cell death-associated gene 8 (TDAG8) is an extracellular pH-sensing G protein-coupled receptor that is overexpressed in various tumors and tumor cell lines. In this report...
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