During engine operation, lubricating oil accumulates not only insoluble contaminants, but also soluble products of aging such as "resins" and also heavier substances that cannot be desorbed from silica gel by alcohol- benzene or acetone—benzene mixtures. The relative content of hydrocarbon groups is...
CHEMICAL COMPOSITION OF USED MOTOR OILS V, A. Litvishkova, A. I. Bukhter, A. V Nepogod'ev, and A. M. Bezhanidze UDC 665.521.5 Changes in oil composition during engine operation are caused by the accumulation of solid contaminants and by chemical conversion of the additives and the ...
B Song,J Springer - 《Journal of Colloid & Interface Science》 被引量: 0发表: 1996年 Field-to-Fuel Performance Testing of Lignocellulosic Feedstocks: An Integrated Study of the Fast Pyrolysis–Hydrotreating Pathway Feedstock composition can affect final fuel yields and quality for the fast pyrolysis...
Chemical energy is converted into heat during the combustion process — an exothermal chemical reaction that requires a supply of oxygen and produces waste. The efficiency of the process depends on many factors, for example: • Composition of the burnable material that defines which part of the...
in the literature have assessed the chemical composition of automotive lubricating oils; however, many of these papers are dated and new oil manufacturing technologies, including the use of new additives, combined with different engine types and operations will result in the production of new wastes....
Despite these early studies investigating the impact of the lockdown in India, there has been no study focusing on the variation of the sources and chemical composition of particulate matter during different phases of the lockdown or the impact of increased O3 concentrations on the sources of PM...
Zhengzhou is a developing city in China, that is heavily polluted by high levels of particulate matter. In this study, fine particulate matter (PM2.5) was collected and analyzed for their chemical composition (soluble ions, elements, elemental carbon (EC) and organic carbon (OC)) in an indust...
This situation may have arisen because of the availability of different products, (for different purposes), within the same product range, or changes to the products composition over time whilst retaining the original name. It is essential that the correct product is used for ...
PM2.5in an industrial district of Zhengzhou, China: Chemical composition and source apportionment Particuology (2013) View more references Cited by (44) Particulate matter geochemistry of a highly industrialized region in the Caribbean: Basis for future toxicological studies ...
minglan 规格 4冲程 一般成分 添加剂 型号 4 Stroke engine oil additive 类型 摩托车机油添加剂 颜色 红棕色 窗体 液体 API SL SJ SG 性能1 4冲程 绩效2 节能 性能3 优异的抗磨性能 闪点(开),≥℃ 165 包装和发货信息 销售单位: 单一商品 单品包装尺寸: ...