关于ATSE选型及应用的探讨

阐述了双电源转换开关ATSE的定义、分类、结构形式、相关标准、主要性能指标；分析了根据不同配电系统的要求ATSE的选择；剖析了转换开关与控制器的相互依存关系；提出了ATSE在设计应用中的技术要点。     

CB形态金字塔及其在图像匹配中的应用

提出了一种基于轮廓结构元素(CB)形态学的多尺度平形态开闭混合金字塔算法,该金字塔的图像分析算子为依次进行最大CB开滤波、最小CB闭滤波和上采样,而图像合成算子则直接采用下采样,这样使得该算法在分析时能较好保持图像的细节,且在合成时具有精确的信号重构能力。文中将其应用于图像匹配中作为搜索策略并进行了仿真实验,结果表明基于该算法的搜索策略可以使匹配速度有较大提高。     

Properties of the graphite-lithium anode in N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide as an electrolyte

The ternary [Li⁺][MPPip⁺][NTf₂⁻] ionic liquid, obtained by dissolution of solid lithium bis(trifluoromethanesulfonyl)imide (LiNTf₂) in liquid N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide (MPPipNTf₂), was used as an electrolyte, and stable at the lithium or graphite-lithium anodes. The graphite-lithium (C₆Li) anode showed good cyclability and Coulombic efficiency in the presence of a molecular additive (10 wt.% of vinylene carbonate, VC) to the ionic liquid. The electrode showed ca. 90% of its initial discharge capacity after 100 cycles. The addition of ethylene carbonate (EC) does not improve the cyclability of the anode to the same degree as that observed in the case of vinylene carbonate.     

轴流式涡流喷口气流运动及高压SF_6断路器介质恢复特性分析

为提高高压SF6断路器中介质恢复和开断能力,提出了涡流冷却气吹技术。在高压SF6断路器中构造新型轴流式涡流喷口结构,使气体在开断过程中动能径向交换,形成沿径向温度梯度,实现高压气流能量分离。以550 k V SF6断路器为例,采用有限体积法,建立3维气流场物理数学模型,研究了容性小电流开断下,喷口上游构造的"X"形导流片对灭弧室内气流参数的影响。并基于流注理论,对有、无导流片结构的断路器介质恢复特性进行数值计算与定量分析。结果表明:导流片结构改变流体运动形态,形成大旋转曲率强旋流动,有效实现能量分离,且能延长气流滞留时间,提高气流利用效率;新型轴流式喷口结构具有更高的介质强度恢复特性。     

Cycle analysis of an integrated solid oxide fuel cell and recuperative gas turbine with an air reheating system

Cycle simulation and analysis for two kinds of SOFC/GT hybrid systems were conducted with the help of the simulation tool: Aspen Custom Modeler. Two cycle schemes of recuperative heat exchanger (RHE) and exhaust gas recirculated (EGR) were described according to the air reheating method. The system performance with operating pressure, turbine inlet temperature and fuel cell load were studied based on the simulation results. Then the effects of oxygen utilization, fuel utilization, operating temperature and efficiencies of the gas turbine components on the system performance of the RHE cycle and the EGR cycle were discussed in detail. Simulation results indicated that the system optimum efficiency for the EGR air reheating cycle scheme was higher than that of the RHE cycle system. A higher pressure ratio would be available for the EGR cycle system in comparison with the RHE cycle. It was found that increasing fuel utilization or oxygen utilization would decrease fuel cell efficiency but improve the system efficiency for both of the RHE and EGR cycles. The efficiency of the RHE cycle hybrid system decreased as the fuel cell air inlet temperature increased. However, the system efficiency of EGR cycle increased with fuel cell air inlet temperature. The effect of turbine efficiency on the system efficiency was more obvious than the effect of the compressor and recuperator efficiencies among the gas turbine components. It was also indicated that improving the gas turbine component efficiencies for the RHE cycle increased system efficiency higher than that for the EGR cycle.     

Photoinduced electron transfer from phenanthroimidazole to nano WO3, CuO ZrO2 and Al2O3. LUMO – CB energy binding efficiency relationship

A new kind of fluorophore 2-(4-fluorophenyl)-1-phenyl-1H-phenanthro [9,10-d] imidazole has been synthesized and characterized by ¹H NMR, ¹³C NMR and mass spectral studies. The dynamics of photoinduced electron injection and energy transfer from phenanthroimidazole to CuO, ZrO₂, WO₃ and Al₂O₃ nanocrystals has been studied by Fourier transform infrared spectroscopy (FT-IR), absorption, fluorescence and lifetime spectroscopic methods. The association between nanocrystals and phenanthroimidazole is explained by both absorption and fluorescence quenching data. The distance between phenanthroimidazole and nanocrystals as well as the critical energy transfer distance has been obtained. The free energy change (ΔG_et) for electron injection has also been deduced. Qualitative relationship exists between the efficiency of binding with the LUMO – CB energy gap and also the efficiency of binding with the HOMO – CB energy gap.     

液压机构泄漏故障的诊断探索

笔者提出了基于故障树分析法处理断路器液压机构泄漏故障的诊断方法,通过对这一方法的不断应用探索和在实践中完善,使这种方法具有诊断断路器液压机构泄漏故障的普遍意义.     

Effects of Cannabidiol and Beta-Caryophyllene Alone or in Combination in a Mouse Model of Permanent Ischemia

Current treatments for stroke, which account for 6.5 million global deaths annually, remain insufficient for treatment of disability and mortality. One targetable hallmark of stroke is the inflammatory response following infarct, which leads to significant damage post-infarct. Cannabinoids and their endogenous targets within the CNS have emerged as potential treatments for neuroinflammatory indications. We and others have previously shown that synthetic agonists of the cannabinoid CB2 receptor reduce infarct size and microglial activation in rodent models of stroke. The non-cannabinoid receptor mediated effects of the phytocannabinoid cannabidiol (CBD) have also shown effectiveness in these models. The present aim was to determine the single and combined effects of the cannabis-derived sesquiterpene and putative CB2 receptor agonist β-caryophyllene (BCP) and CBD on permanent ischemia without reperfusion using a mouse model of photothrombosis. Because BCP and CBD likely work through different sites of action but share common mechanisms of action, we sought to determine whether combinations of BCP and CBD were more potent than either compound alone. Therefore we determined the effect of BCP (3–30 mg/kg IP) and CBD (3–30 mg/kg IP), given alone or in combination (30:3, 30:10, and 30:30 BCP:CBD), on infarct size, microglial activation, and motor performance.