Numerical simulation and comparison of electrical characteristics between uniaxial strained bulk and SOI FinFETs

In this paper, electrical characteristics of 25 nm strained fin-typed field effect transistors (FinFETs) with oxide-nitride-stacked-capping layer are numerically studied. The FinFETs are fabricated on two different wafers, one is bulk silicon and the other is silicon-on-insulator (SOI) substrate. A three-dimensional device simulation is performed by solving a set of density-gradient-hydrodynamic equations to study device performance including, such as the drain current characteristics (the I_D-V_G and I_D-V_D curves), the drain-induced barrier height lowering, and the subthreshold swing. Comparison between the strained bulk and SOI FinFETs shows that the strained bulk FinFET is promising for emerging multiple-gate nanodevice era according to the manufacturability point of view.     

大电力系统可靠性评估高性能计算平台设计与实现

针对大电力系统可靠性计算的高度复杂性,基于高性能集群环境,建立了粗粒度Monte Carlo并行计算模型,提出了消息传递机制下配合收敛控制的异步化并行算法,以较高的加速比和并行效率,快速实现大电力系统可靠性评估计算。同时,以大电力系统可靠性评估高性能计算为核心,利用LAMP（Linux+Apache+MySQL+PHP）网络开发工具,建立基于浏览器/服务器（B/S）3层模型的Web计算系统基本结构,提出对应的网络数据库设计和并行计算模块装载模型,以Web Service的形式实现大电力系统可靠性评估高性能计算的Internet共享。     

ZnS和MgS的高压相变和弹性性质

为了进一步研究ZnS和MgS晶体在高压下的B1和B3结构的晶体结构和弹性性质,利用第一性原理平面波赝势密度泛函理论并通过GGA近似,计算得到了高压下ZnS和MgS晶体B3到B1结构相变的相变压强和高压下的弹性系数（C11,C12,C44,B）,结果发现两者相变压强是11.87和0.78GPa,两者在不同结构的弹性系数（C11,C12,C44）与压强变化具有相同的趋势：C11>C12>C44;同时计算得到了两种物质在基态的结构常数,并将其与其他实验和理论计算的结果对比,发现符合得甚好.     

大冶铜山口难选铜硫矿有效分离的研究

研究了黄铜矿和黄铁矿纯矿物的可浮性特点，铜硫分离的最佳条件；介绍了铜山口难选铜硫矿混合浮选及铜硫分离的最佳选别条件与工艺流程；着重论述了ＳＮ一９在铜、硫分离浮选中的作用。     

镁基大块非晶合金的制备与性能研究

采用铜模浇铸的方法成功制备了最大直径为12mm的Mg65Cu20Ag5Gd10非晶合金,并对其结构、热稳定性能、非晶形成能力、压缩性能及断口形貌进行了分析.结果表明,Mg65Cu20Ag5Gd10具有较强的玻璃形成能力和良好的热稳定性能;合金的断裂强度达895MPa,弹性应变为2.35%.     

球团厂散料再利用的试验研究

为了合理利用鄂州球团厂的散料,将散料返回球团生产系统,对球团散料造球及链篦机一回转窑投笼进行试验,确定散料球团再利用的可行性。     

A New Adsorption Based Correlation for Estimation of Membrane Bulk Porosity

In this work, a new simple correlation has been derived for the prediction of the bulk porosity decline during nanofiltration of a salty (ionic) solution using the PVD membrane. This model has been developed on the basis of the adsorption of the cations available in the feed onto the membrane. Therefore, three adsorption isotherms were tested and fitted to the equilibrium adsorption data, and the Freundlich isotherm was subsequently realized as the best choice. The porosity model included two adjustable parameters which can be determined theoretically and experimentally. Adsorption isotherms were combined for the determination of the first parameter and a novel method called “Flux test” was developed for the other parameter estimation. A reasonable agreement was observed between experimental- and model-predicted porosity. The model's ability of estimation indicates a little decrease at higher pressures due to approaching an unfavorable equilibrium adsorption condition and deviation from the isotherm's parameters from the actual equilibrium amounts to this situation.     

Effect of metalloid elements on magnetic properties of Fe-based bulk metallic glasses

In this work, we successfully prepare Fe₈₀(P, C, B)₂₀ bulk metallic glasses (BMGs) with the different content of P, C, B by combining fluxing treatment and J-quenching technique, and the effects of the metalloid elements (P, C, B) on the thermal stability and magnetic properties of the present Fe₈₀(P, C, B)₂₀ BMGs are investigated systematically. It is found that the replacements of P or B by C and P by B enhance the thermal stability of Fe₈₀(P, C, B)₂₀ BMGs. The substitutions of B for C or P and C for P result in the increase of both the saturation magnetization and the Curie temperature of Fe₈₀(P, C, B)₂₀ BMGs.     

Analysis of physical demands during bulk bag closing and sealing

Several tools are sold and recommended for closing and sealing flexible intermediate bulk containers (bulk bags) which are used to transport product that has been mined and processed. However, there is limited information on the risks, physical demands, or the benefits of using one tool over another. The purpose of this study was to evaluate the physical demands involved with two closing methods and several sealing tools in order to provide recommendations for selecting tools to reduce exposure to risk factors for work-related musculoskeletal disorders. In this study, twelve participants completed bag closing and sealing tasks using two different closing methods and eight sealing tools on two types of bulk bags. Physical demands and performance were evaluated using muscle activity, perceived exertion, subjective ratings of use, and time. Results indicate that using the “flowering” method to close bags required on average 32% less muscle activity, 30% less perceived exertion, 42% less time, and was preferred by participants compared to using the “snaking” method. For sealing, there was no single method significantly better across all measures; however, using a pneumatic cable tie gun consistently had the lowest muscle activity and perceived exertion ratings. The pneumatic cable tie gun did require approximately 33% more time to seal the bag compared to methods without a tool, but the amount of time to seal the bag was comparable to using other tools. Further, sealing a spout bulk bag required on average 13% less muscle activity, 18% less perceived exertion, 35% less time, and was preferred by participants compared to sealing a duffle bulk bag. The current results suggest that closing the spout bag using the flowering method and sealing the bag using the pneumatic cable tie gun that is installed with a tool balancer is ergonomically advantageous. Our findings can help organizations select methods and tools that pose the lowest physical demands when closing and sealing bulk bags.