柏士嗜木螨〔Caloglyplus berlesi Michael 1903)是贮藏物螨类之一,它可危害贮藏小麦、花生、椰干、亚麻等多种贮藏品,还曾经在仔鸡饲养房和昆虫饲养器中发现过,还能引起人类的疾病,在粮食贮藏和人体保健上有重要性,在1993—1995年对关...柏士嗜木螨〔Caloglyplus berlesi Michael 1903)是贮藏物螨类之一,它可危害贮藏小麦、花生、椰干、亚麻等多种贮藏品,还曾经在仔鸡饲养房和昆虫饲养器中发现过,还能引起人类的疾病,在粮食贮藏和人体保健上有重要性,在1993—1995年对关中大蒜的普查中,首次发现为害贮藏大蒜,该螨在仓库中以成、若螨群集在蒜头上,常从伤痕处和蒜盘处开始取食,并使蒜瓣坏死腐烂,在蒜头贮量较大,贮期较长,环境温度、湿度较高时,发生数量多,危害较重,对蒜头贮运,加工和出口是一个严重的威胁,迄今尚未见国内对该螨的研究报导,为给贮藏蒜害螨的综合防治提供依据,对其生物学和生态学的研究势在必行,为此,笔者于1996—1997年对其生物学特性和防治进行了初步观察和试验。展开更多
The current work is an extension of the nonlocal elasticity theory to fractional order thermo-elasticity in semiconducting nanostructure medium with voids.The analysis is made on the reflection phenomena in context of...The current work is an extension of the nonlocal elasticity theory to fractional order thermo-elasticity in semiconducting nanostructure medium with voids.The analysis is made on the reflection phenomena in context of three-phase-lag thermo-elastic model.It is observed that,four-coupled longitudinal waves and an independent shear vertical wave exist in the medium which is dispersive in nature.It is seen that longitudinal waves are damped,and shear wave is un-damped when angular frequency is less than the cut-off frequency.The voids,thermal and non-local parameter affect the dilatational waves whereas shear wave is only depending upon non-local parameter.It is found that reflection coefficients are affected by nonlocal and fractional order parameters.Reflection coefficients are calculated analytically and computed numerically for a material,silicon and discussed graphically in details.The results for local(classical)theory are obtained as a special case.The study may be useful in semiconductor nanostructure,geology and seismology in addition to semiconductor nanostructure devices.展开更多
文摘柏士嗜木螨〔Caloglyplus berlesi Michael 1903)是贮藏物螨类之一,它可危害贮藏小麦、花生、椰干、亚麻等多种贮藏品,还曾经在仔鸡饲养房和昆虫饲养器中发现过,还能引起人类的疾病,在粮食贮藏和人体保健上有重要性,在1993—1995年对关中大蒜的普查中,首次发现为害贮藏大蒜,该螨在仓库中以成、若螨群集在蒜头上,常从伤痕处和蒜盘处开始取食,并使蒜瓣坏死腐烂,在蒜头贮量较大,贮期较长,环境温度、湿度较高时,发生数量多,危害较重,对蒜头贮运,加工和出口是一个严重的威胁,迄今尚未见国内对该螨的研究报导,为给贮藏蒜害螨的综合防治提供依据,对其生物学和生态学的研究势在必行,为此,笔者于1996—1997年对其生物学特性和防治进行了初步观察和试验。
文摘The current work is an extension of the nonlocal elasticity theory to fractional order thermo-elasticity in semiconducting nanostructure medium with voids.The analysis is made on the reflection phenomena in context of three-phase-lag thermo-elastic model.It is observed that,four-coupled longitudinal waves and an independent shear vertical wave exist in the medium which is dispersive in nature.It is seen that longitudinal waves are damped,and shear wave is un-damped when angular frequency is less than the cut-off frequency.The voids,thermal and non-local parameter affect the dilatational waves whereas shear wave is only depending upon non-local parameter.It is found that reflection coefficients are affected by nonlocal and fractional order parameters.Reflection coefficients are calculated analytically and computed numerically for a material,silicon and discussed graphically in details.The results for local(classical)theory are obtained as a special case.The study may be useful in semiconductor nanostructure,geology and seismology in addition to semiconductor nanostructure devices.
