نتایج جستجو برای: paraffin wax
تعداد نتایج: 19827 فیلتر نتایج به سال:
Study of self-healing capability of composite material with phase changing paraffin wax and graphene
Abstract The main aim of this research work was to conduct an experimental study self-healing capability the composite material by using phase changing material. utilized “paraffin wax” for healing made up carbon fiber and epoxy. Three combinations reinforced epoxy with materials were prepared i.e., plain without any material, paraffin wax nano graphene. fabrication inside capsulation has been ...
In regions with a humid summer climate, the use of water-soluble bait to control apple maggot is often limited by rainfall. We studied increasing the rainfastness of GF-120 fruit fly bait by adding paraffin wax emulsion. First, we verified that adding 10% wax to a mixture containing 16.7% GF-120 did not reduce the mortality of female apple maggot compared with GF-120 without wax. In addition, w...
TiO2 nanoparticles about 20 nm in diameter in the form of anatase were prepared and characterized. The nanoparticles were successfully dispersed into a paraffin wax (PW) matrix without any surfactant. The differential scanning calorimetric instrument and the transient short hot-wire method were used to measure the thermal properties of the TiO2/PW composites. It is found that the phase-change t...
W THEN fixed plant tissues are to be sectioned, they are usually dehydrated V V by passing through graded concentrations of alcohol and are then immersed in chloroform to allow infiltration of the cells by paraffin wax. When performed most meticulously, this process may take as long as 9 days; the least time we have been able to use is about 3 days. Moreover, this procedure, especially the trea...
Carnuba wax consists chiefly of myricyl cerotate (MW 817.4) and small quantities of free cerotic acid (C26H52O2, Mw 396.7) and myricyl alcohol (C30H62O, mp 90 ̊C). Of the two common extraction solvents, ethyl ether or petroleum ether, Lewkowitsch prefers the former. Concerning separation of phases, he advocates addition of small amounts of alcohol or caustic, and he also states that formation of...
Honey bees, Apis mellifera, acquire nest-mate recognition cues from wax, the predominant material used in nest construction. Exposure of a newly emerged worker bee to wax-comb substrate significantly reduced the acceptability of that worker to sister bees. Cues acquired from the comb provided colony-specific information about the identity of worker bees; moreover, the effect of comb exposure ha...
Most reservoir fluids contain heavy paraffinic compounds that may precipitate as a solid or solid like material called wax if the fluid is cooled down. Wax precipitation is a phenomenon of considerable importance in oil industry. An increase in aggregation results in enhanced oil viscosity. This however causes significant negative effects on production, transportation and processing of crude oi...
Most reservoir fluids contain heavy paraffinic compounds that may precipitate as a solid or solid like material called wax if the fluid is cooled down. Wax precipitation is a phenomenon of considerable importance in oil industry. An increase in aggregation results in enhanced oil viscosity. This however causes significant negative effects on production, transportation and processing of crude oi...
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