摘要：The electroactive materials used in the counter electrode(CE)are of great concern as they influence the photovoltaic performances of dye-sensitized solar *** main functions of CE materials are collecting electrons from the external circuit and transferring them to the electrolyte and realizing the catalytic reduction of the redox species(I3^– or Co^3+)present in the *** research hotspot of CE materials is seeking functional materials that display high efficiency,low cost,and good electrochemical stability and can substitute the benchmark platinum *** compounds of cobalt,nickel,and iron have been widely applied as CE materials and exhibit excellent electrocatalytic performances owing to their unique electrical properties,similar energies of adsorption of I atoms as platinum,excellent catalytic activities,and good chemical *** this review,we trace the developments and performances of chalcogen compounds of iron,cobalt,and nickel as CE materials and present the latest research directions for improving the electrocatalytic *** then highlight the optimization strategies for further improving their performances,such as fabrication of architectures,regulation of the components,synthesis of composites containing carbon materials,and elemental doping.

摘要：By introduction of a new Fe(L^(1))_(2)spin-crossover(SCO)unit into the polynuclear system,a nano-scale Fe4(L^(2))_(4)molecular square architecture is designed through coordination-directed self-assembly *** the mononuclear Fe(L^(1))_(2)and tetranuclear Fe4(L^(2))_(4)complexes have bee门structurally confirmed by 1H nuclear magnetic resonance(NMR),electrospray ionization time-of-flight mass spectrometry(ESI-TOF-MS),and temperature-dependent single crystal X-ray diffraction ***-temperature magnetic susceptibility measurements reveal the presence of an abrupt SCO behavior with a thermal hysteresis width of 4K for Fe(L^(1))_(2).By clear contrast,Fe4(L^(2))_(4)undergoes a gradual spin transition behavior with enlarged thermal hysteresis width and higher spin transition temperature.

摘要：The aim of this work is to investigate and optimize the effects of the leaching parameters on the selective leaching of zinc from electric arc furnace steelmaking dust （EAFD）. The response surface method was applied on the basis of a three-level Box–Behnken experimental design method for optimization of selective leaching parameters of zinc from EAFD. The leaching recoveries of zinc （YZn） and iron （YFe） were taken as the response variables, where the concentration of sulphuric acid （X1, mol/L）, leaching temperature （X2, °C）, leaching time （X3, min）, and liquid/solid ratio （X4, mL/g） were considered as the independent variables （factors）. The mathematical model was proposed. Statistical ANOVA analysis and confirmation tests were applied. A maximum of 79.09% of zinc was recovered while the minimum iron recovery was 4.08% under the optimum conditions of leaching time 56.42 min, H2SO4 concentration 2.35 mol/L, leaching temperature 25 °C and liquid/solid ratios. By using ANOVA, the most influential factors on leaching of zinc and iron were determined as H2SO4 concentration and leaching temperature, respectively. The proposed model equations using response surface methodology show good agreement with the experimental data, with correlation coefficients （R2） of 0.98 for zinc recovery and 0.97 for iron recovery.

摘要：This study describes thermal behavior of magnetic lubricant oil under electromagnetic induction. Experimental set up include oil pump, oil tank, induction heating unit, and heat exchanger. It is a closed loop system where the oil pump circulates oil through oil tank to the system, at the same time induction heating unit heats up to the heat exchanger where the lubricant oil thermal behavior is examined. The unit has been largely studied and tested both magnetic and regular motor oil in a laboratory environment and promising results have been obtained for an actual indoor floor to space heating system design.

摘要：目的 研究在RayStation 4.7计划系统平台上实现基于预测模型和自动优化算法的宫颈癌容积旋转调强（VMAT）全自动计划设计。方法 选取40例宫颈癌VMAT专家计划进行分析，使用主成分回归分析方法建立危及器官的体积剂量直方图（DVH）预测模型，运用ironPython编程语言在RayStation 4.7计划系统平台上实现基于预测模型的宫颈癌VMAT计划的自动创建和自动优化，并通过与手动计划的比较来评估自动计划的质量和效率。另外选取10例专家计划用于验证模型的准确性和自动计划的可行性。结果 10例宫颈癌VMAT计划测试结果显示预测模型能够很好地预测直肠、膀胱和小肠的剂量体积参数；自动计划与专家计划相当，而与原始手动计划相比，靶区的均匀性和适形性差异无统计学意义（P〉 0.05），膀胱平均V40和V50下降4.3%和1.6%，（t=2.75、5.26，P〈 0.05），直肠平均V30、V40和V50下降6.8%、5.8%和2.1%（t=2.26、3.55、5.19，P〈0.05），左右股骨头平均剂量分别下降380和322 cGy（t=5.55、7.25，P〈 0.05），小肠平均剂量差异无统计学意义（P〉 0.05）。自动计划和手动计划平均用时分别为36和53 min。结论 RayStation计划系统平台上基于ironPython语言并结合预测模型的自动计划程序能够快速高效地完成高质量的宫颈癌VMAT计划。

摘要：为了进一步应对飞机iron Birds试验台各种功率设备的供配电问题,缩减配电系统的占用空间,保证配电系统的安全可靠运行。本文在简要介绍基于SSPC的智能配电系统基础上,对其硬件系统及软件系统进行了设计,并在某飞机iron Birds试验台进行相关测试,效果良好,对后期采用SSPC的智能配电系统设计具有一定借鉴意义。