快堆MOX元件运输容器的缓冲器研究

快堆MOX元件运输容器的缓冲器是决定其放射性包容边界安全的重要部件。某型号MOX元件运输容器的缓冲器材料首次选择泡沫铝,通过自由下落试验的标准姿态进行吸能原理分析,设计出了适用于缓冲器材料的型号、结构及关键参数。对选定的材料进行了拉伸、压缩、剪切3种准静态和动态力学性能试验,获得了用于数值模拟计算的材料本构关系参数,并对模型参数进行了测试,用弯曲试验进行了验证。有限元分析和试验结果对比显示：运输容器缓冲器材料的本构关系具有适用性,可用于快堆某型号MOX元件运输容器的自由下落分析计算。     

甲醛／氟化铵／有机羧酸盐酸化液的性能研究与现场试验

针对胜利纯梁油田泥质含量高的地质特点，研制了以甲醛、氟化铵和有机羧酸为主要成分的ＦＡＣ酸化液。本文介绍了ＦＡＣ酸化液的酸化机理、性能及现场试验情况。结果表明，该酸液腐蚀性小，与地层的反应速度低，不易产生二次沉淀，适合于低渗透砂岩油层的深部酸化     

保护储层的新型完井液体系研究

在研究歧口１８－１油田储层岩心的敏感性、完井液处理剂及体系的防膨性、与储层水的配伍性和对储导损害程度的基础上，对用于该油田的原有完井液处理剂及体系进行了评价试验。     

Channel Measurement and Path Loss Modeling from 220 GHz to 330 GHz for 6G Wireless Communications

Terahertz (THz) communication has been envisioned as a key enabling technology for sixthgeneration (6G).In this paper,we present an extensive THz channel measur...     

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.     

A Survey on Routing Algorithms for Opportunistic Mobile Social Networks

Opportunistic Mobile Social Networks(OMSNs)are kind of Delay Tolerant Networks(DTNs)that leverage characteristics of Mobile Ad Hoc Networks(MANETs)and Social Networks,particularly the social features,to boost performance of routing algorithms.Users in OMSNs communicate to share and disseminate data to meet needs for variety of applications.Such networks have attracted tremendous attention lately due to the data transmission requirement from emerging applications such as IoT and smart city initiatives.Devices carried by human is the carrier of message transmission,so the social features of human can be used to improve the ability of data transmission.In this paper,we conduct a comparative survey on routing algorithms in OMSNs.We first analyze routing algorithms based on three social features.Since node selfishness is not really considered previously in aforementioned routing algorithms,but has significant impact on network performance,we treat node selfishness as another social feature,classify and elaborate routing algorithms based on incentive mechanism.To assess the impact of social features on routing algorithms,we conducted simulation for six routing algorithms and analyzed the simulation result.Finally,we conclude the paper with challenges on design of routing in OMSNs and point out some future research directions.     

Layout dependence of total-ionizing-dose response in 65-nm bulk Si pMOSFET

Dear editor, Strain technology has become a common solution in the semiconductor manufacturing industry since 90-nm technol-ogy node to overcome the severe carr...     

三维CPC太阳能聚集特性的数值模拟

根据几何光学原理,通过联合求解高次曲面方程,采用射线踪迹蒙特卡洛法(Monte-Carlo ray-tracing Method,MCRT)模拟了直射太阳光束在三维CPC内的传播过程.通过数值模拟,分析了三维CPC的太阳能聚集能流密度分布、方向分布和透过特性以及这些聚集特性参量随CPC高度截取比例、CPC最大接收角、跟踪误差等因素的变化.结果表明,三维CPC的出射面太阳能热流分布出现峰值;截顶后三维CPC的最大接收角不变,透过率性能有所改善.     

纳米材料在国内外油气田开发中的应用进展

从油气田开发对新技术、新产品的需求出发，从以下七个方面（钻探、采注、调剖、钻井液，污水处理、防腐、润滑）探讨了油气田开发领域存在的技术问题和应用纳米技术和材料的可能性和优势性，为今后纳米技术在油气田开发中的应用提供了新思路。