压缩式致冷设备的电子宽温域多功能控制

设计并研制了一种用于压缩式致冷设备的电子式定温域多功能控制装置。它除具有控温范围宽、精度高、控温参数易调等优点外，还实现了低成本的温度显示、半自动除霜控制、加电延时保护、过欠压保护等功能。全部采用无触点控制方式，有良好的性能／价格比。     

中碱值硫化烷基水杨酸钙的制备及性能研究

介绍了一种碱值达170mgKOH／g以上、硫含量大于3．0％、钙含量大于6．0％的硫化烷基水杨酸钙盐润滑油添加剂的制备过程及其性能。实验中重点考察了促进剂及硫磺加入量对产品碱值及硫含量的影响；通过冷冻蚀刻电镜法观察了含碳酸盐的胶体粒子结构及粒度分布情况；应用凸轮挺校、四球试验机等考察了硫化烷基水杨酸钙盐产品的极压抗磨性能。结果表明，硫化烷基水杨酸钙产品不但具有良好的高温洁净性、抗氧化安定性、胶体稳定性，而且具有突出的极压抗磨性及热稳定性。     

浅析无效合同的诉讼时效

梳理请求确认无效合同是否适用诉讼时效的各种观点及理由,认为请求确认无效合同属诉讼法上确认之诉,不同于追诉时效,不应适用诉讼时效:无效合同确认后的赔偿损失请求权应适用诉讼时效,应从裁判确认合同无效的次日起算,返还财产请求权属于物上请求权不应适用诉讼时效.     

基于VC的监测诊断软件开发技巧

由于监测诊断系统功能复杂、数据量大、实时性高,所以在软件开发中要尽量对代码进行优化。文中给出监测诊断软件的基本结构,并对VC开发监测诊断软件中涉及到的多线程、监测数据的存储和曲线显示等关键技术进行了介绍,其能够有效的提高系统的实时性和可靠性。     

考虑电网安全约束的调度计划与停电检修计划优化

针对考虑电网安全约束的调度计划智能优化与停电计划进行了研究.首先建立了考虑安全约束的调度计划优化模型,从而确定机组的组合状态.考虑到电气设备运行检修状态的需求,从稳定性分析和检修指标两方面对设备检修需求进行了分析.考虑到停电计划需要结合机组短期和中长期调度计划安排,提出了基于多级安全校核的停电计划规则.最后针对机组调度...     

Wet‐driven shape‐memory behaviors and thermal adaptability of cotton knitted fabrics containing crosslinked poly(ethylene glycol) moieties

Cotton knitted fabrics were treated with poly(ethylene glycol) (PEG) in the presence of polyhydric alcohol etherified dimethylol dihydroxy ethylene urea as the crosslinker and magnesium chloride hexahydrate as the catalyst. In wet–dry cycles, the fabrics treated with 30% PEG1500 in the presence of 15% crosslinker and 3% catalyst showed obvious wet‐driven shape‐memory behaviors in terms of a 12% shrinkage rate in the wet state and a 80% shrinkage‐recovery rate in the dry state. The results of weight gain, morphological structures, Fourier transform infrared spectra, and X‐ray diffraction pattern tests confirmed PEG deposits on the surface of the treated fabrics, demonstrated the crosslinking of cotton cellulose with PEG and crosslinker, and also explained the wet‐driven shape‐memory mechanism. The results from differential scanning calorimetry show that the treated fabrics with wet‐driven shape‐memory behaviors had a phase‐change enthalpy and heat‐storage capacity. The crosslinking of cotton cellulose with PEG had a strong influence on the mechanical performance and air permeability of the cotton knitted fabrics. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43473.     

介孔分子筛SBA-15的改性研究进展

从金属改性、酸改性和氧化物改性三方面综述了介孔分子筛SBA-15的改性研究进展,重点介绍了SBA-15表面功能化后引入金属改性的方法。评述了金属纳米粒子的制备对改性的SBA-15催化剂催化性能的影响。     

高相对分子质量成核剂对聚丙烯结晶行为的影响

采用差示扫描量热仪和偏光显微镜研究了高相对分子质量成核剂（PNA）改性聚丙烯（PP）的结晶行为和结晶形态。结果表明,添加PNA后,PP的起始结晶温度（Tc）和结晶峰温（Tp）明显升高,降温速率为5 ℃/min,加入0.7份PNA时,Tc和Tp分别提高到131.90 ℃和128.32 ℃,结晶度由未添加PNA时的56.32 %提高到61.63 %;加入PNA后,球晶数量明显增多球晶尺寸更加细小且均匀,促进了PP的结晶,提高了PP制品的定型温度,能够缩短制品的生产周期。     

The Effect of Additives on Cu/HZSM-5 Catalyst for DME Synthesis

The addition of ZnO or ZrO₂ into CuO/HZSM-5 was investigated for DME synthesis from syngas by using the reactive frontal chromatography method, TPR and in situ TPR. These promoters enhanced the catalytic activity of Cu/HZSM-5 and promotion with ZnO and ZrO₂ produced a maximum activity, which could be explained by the improvement of the dispersion of Cu and the promotion of CuO reduction. The Cu⁺ species existing during the reaction have been detected, based on which a Cu⁰ Cu⁺¹ redox cycle model was put forward.