瞬变电磁法在煤矿防治水中的应用

瞬变电磁是一种新型的煤矿井下物探手段,其操作简便、成本低,但也存在一些问题。本文通过瞬变电磁法物探在煤矿井下的实际应用情况,阐述了其对矿井防治水的指导意义,对其推广应用前景及存在的问题提出了意见和建议。     

428XL光缆交叉线的工作原理及故障检修方法

428XL光缆交叉线是428XL仪器的重要组成部分,它的问世有效提高了采集数据的传输速度,满足了随着野外采集道数的增加采集数据的数据量越来越大的数传要求。本文从428XL光缆交叉线的基本组成入手,详细剖析了428XL光缆交叉线的传输原理,并介绍了光缆交叉线应用于428XL仪器施工时的工作流程及其在施工中可能出现的故障和相应的检修方法。     

履带式蜘蛛型高空作业平台底架有限元分析

介绍了履带式蜘蛛型高空作业平台的基本结构，分析整机工作时底架结构最不利工况。对底架结构中的重要部件进行有限元分析，通过分析上车载荷作用在底架正前和正侧方工况，得到底架部件结构应力及位移图云图。     

Isolation and Characterization of 13 New Polymorphic Microsatellite Markers in the Phaseolus vulgaris L. (Common Bean) Genome

In this study, 13 polymorphic microsatellite markers were isolated from the Phaseolus vulgaris L. (common bean) by using the Fast Isolation by AFLP of Sequence COntaining Repeats (FIASCO) protocol. These markers revealed two to seven alleles, with an average of 3.64 alleles per locus. The polymorphic information content (PIC) values ranged from 0.055 to 0.721 over 13 loci, with a mean value of 0.492, and 7 loci having PIC greater than 0.5. The expected heterozygosity (H_E) and observed heterozygosity (H_O) levels ranged from 0.057 to 0.814 and from 0.026 to 0.531, respectively. Cross-species amplification of the 13 prime pairs was performed in its related specie of Vigna unguiculata L. Seven out of all these markers showed cross-species transferability. These markers will be useful for future genetic diversity and population genetics studies for this agricultural specie and its related species.     

Modeling the customer satisfaction function: a two-country comparison

This paper provides a framework that integrates and reinterprets prior research on satisfaction modeling (function) and proposes the existence of non-linear and curvilinear/higher-order relationships to model online banking customers. It provides a framework that examines two closely related but distinct countries—Malaysia, a developing country, and Singapore, a developed country—and identifies whether modeling online banking customers through satisfaction is unique to each context or is generic. Using a systematic and step-by-step hierarchical moderated regression approach, this study tries to understand the relationship among repurchase intention, satisfaction, and trust, moderated by bank size. Malaysia portrays a linear relationship, while Singapore depicts non-linear and curvilinear/high-order relationships. The findings suggest that modeling online banking customers through satisfaction depends on a country’s economic development. By contrast, prior studies on modeling customers through satisfaction were conducted independently and did not employ proper and systematic steps to capture the satisfaction function.     

The control of spontaneous emission from a three-level atom in an anisotropic photonic crystal with two asymmetric bands

We theoretically investigate the spontaneous emission light of an excited three-level atom embedded in an anisotropic photonic crystal with two asymmetric bands. The property of spontaneous emission relating to the atomic position in a unit cell of the crystal is described with a position-dependent phase difference. The atomic transition in free space can be manipulated by the other associated transition coupling to photonic crystal. The result shows that the spontaneous emission spectra are effectively shifted and tuned by the atomic position-dependent phase, which results in the asymmetric distribution of the photonic density of states between two bands, and the increasing band can push the emitted light towards the other band. The physical process can be further illuminated through analyzing the emitted field in photonic crystal. The result perhaps offers an interesting route towards tunable photonic devices.