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As a central device of a power system, the safe running of a power transformer is considered to be significance. Through the statistics of onsite faults, the amount of the transformer winding deformation caused by short-circuit faults within transformer winding is maximum, therefore the detecting on the short circuit faults is important to improve the reliability of power transformers in service....
Oil-impregnated paper is generally used as insulation material in power transformer, which consists of transformer oil and insulating paper (pressboard). And the pressboard made of cellulose is one of important components in transformer insulating system. Oil-impregnated pressboard stays in the environment with high temperature during normal operation of transformer. It is generally recognized that...
In order to research the safety of an underground antiaircraft structure after buildings added at its top ground, the quality of concrete appearance and rustily of steel bar are detected, and the bear capacity of the structure is calculated by Finite Element Method. It is indicated by detection and calculation that the quality of concrete and steel bar can be satisfied and so be the bear capacity...
This report describes the synthesis and characterization of novel carbohydrate-based chiral ammonium ionic liquids using isomannide as a biorenewable substrate. The diastereomeric interactions of these chiral ammonium ionic liquids with racemic Mosher’s acid salt have been studied using NMR, which indicates their participation in chiral discrimination and shows their potential applications in chiral...
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