Ultra-broadband reflectionless Brewster absorber protected by reciprocity

The Brewster's law predicts zero reflection of p-polarization on a dielectric surface at a particular angle. However, when loss is introduced into the permittiv...     

BAF-L Modulates Histone-to-Protamine Transition during Spermiogenesis

Maturing male germ cells undergo a unique developmental process in spermiogenesis that replaces nucleosomal histones with protamines, the process of which is critical for testicular development and male fertility. The progress of this exchange is regulated by complex mechanisms that are not well understood. Now, with mouse genetic models, we show that barrier-to-autointegration factor-like protein (BAF-L) plays an important role in spermiogenesis and spermatozoal function. BAF-L is a male germ cell marker, whose expression is highly associated with the maturation of male germ cells. The genetic deletion of BAF-L in mice impairs the progress of spermiogenesis and thus male fertility. This effect on male fertility is a consequence of the disturbed homeostasis of histones and protamines in maturing male germ cells, in which the interactions between BAF-L and histones/protamines are implicated. Finally, we show that reduced testicular expression of BAF-L represents a risk factor of human male infertility.     

江西电信NGN建设浅析

迫于移动及IP业务的分流压力,中国电信提出了企业转型。新建NGN网络作为网络转型的重要部分,2005年已经正式启动,现在正在紧张建设之中。中国电信为何要建设NGN,如此庞大的全国性的网络是如何架构的,NGN在当前充当了何种角色,其话务疏通原则、计费是怎样的,NGN与PSTN有何种关系,本文对这些问题作了一定的分析和介绍。     

基于SIM卡动态口令的互联网身份认证体系与应用

本文研究和分析了互联网现有身份认证的手段,在此基础上提出基于SIM卡动态口令的互联网身份认证体系,结合现实提出了它的应用领域,并且探讨了应用的商业模式,以期解决目前存在的互联网安全问题.     

网页木马剖析与实现

该文首先介绍了网页木马的概念和攻击原理,在此基础上设计了一个网页木马实例,并对其进行了详细的分析,在文章结尾提出了针对网页木马的防范措施。     

Molecular Cytogenetic Characterization of Novel 1RS.1BL Translocation and Complex Chromosome Translocation Lines with Stripe Rust Resistance

Rye is the most important source for the genetic improvement of wheat. In this study, two stable wheat-rye primary 1RS.1BL translocation lines, RT855-13 and RT855-14, were selected and identified by acid polyacrylamide gel electrophoresis (A-PAGE), co-dominant PCR, and multi-color fluorescence in situ hybridization (MC-FISH) from the progeny of the crossing of the wheat cultivar Mianyang11 and a Chinese rye Weining. When more than two independent, simple reciprocal translocations are involved in a carrier, they are defined as complex chromosome translocations (CCT). The MC-FISH results also indicated that CCT occurred in RT855-13; namely that, besides 1RS.1BL translocation chromosomes, there are other two pairs of balanced reciprocal translocations. It was demonstrated that the interchange between a distal segment of 4B and long arm of 3D occurred in the RT855-13. The novel translocation chromosomes in wheat were recorded as 3DS.4BS^DS and 3DL-4BS^PS.4BL. Reports about CCT as a genetic resource in plant breeding programs are scarce. Both lines expressed high resistance to Puccinia striiformis f. sp. tritici, which are prevalent in China and are virulent on Yr9, and the CCT line RT855-13 retained better resistance as adult plants compared with RT855-14 in the field. Both lines, especially the CCT line RT855-13, exhibited better agronomic traits than their wheat parent, Mianyang11, indicating that both translocation lines could potentially be used for wheat improvement. The results also indicated that the position effects of CCT can lead to beneficial variations in agronomic and resistant traits, making them a valuable genetic resource to wheat breeding programs.     

热轧板卷厂集中补脂系统的开发与应用

针对常规自动干油润滑系统补脂时存在的问题,开发了一套新型集中自动补脂润滑系统并应用于韶钢宽中厚板厂,取得了较好的效果。     

面向新工科建设的"正弦电路分析"教学实践与探索

正弦电路分析是电路电工课程的教学重点和难点之一。面向新工科建设要求,笔者对正弦电路分析部分教学目标进行设计,构建知识体系的教学逻辑和教学方法;对"正弦电路分析的相量法引入"和"谐振以及其在工程中应用"两个关键知识点的授课方法进行了研究,同时对如何将思政教育融入教学进行了总结和归纳。教学实践表明：面向新工科建设的教学方法体现了正弦电路内容的逻辑性与系统性,提高了学生对正弦电路分析的掌握程度,并且培养了学生的工程综合素养。     

基于网络多媒体教学方法的探讨

结合网络多媒体教学实践,对当前网络多媒体教学方法进行了研究和分析,指出目前网络多媒体教学存在的不足,并提出相应改进措施.     

Identifying the convergent reaction path from predesigned assembled structures: Dissymmetrical dehalogenation of Br2Py on Ag(111)

Nano Research - On-surface Ullmann coupling has been intensely utilized for the tailor-made fabrication of conjugated frameworks towards molecular electronics, however, reaction mechanisms are...