员工心理健康应纳入培训体系

电网企业员工职业倦怠、心理困扰、心理压力颇多,因此倡导加强企业员工的心理培训,为员工提供精神支持与心理辅导,建立员工心理调适机制,并提出员工心理健康培训方法.     

Quantitative characterization of nanoprecipitates in irradiated low-alloy steels: advances in the application of FEG-STEM quantitative microanalysis to real materials

The characterization of the solute-enriched features (clusters or nanoprecipitates in irradiated low-alloy steels) requires extremely high spatial and elemental resolution, previously necessitating analysis using atom probe field-ion microscopy. In this investigation, field-emission gun-scanning transmission electron microscope (FEG-STEM) quantitative energy dispersive X-ray (EDX) microanalysis (spectrum imaging) has been applied to the characterization of the irradiation-induced nanoprecipitates in a low-alloy forging steel. Refinements in the EDX data have been possible via the application of multivariate statistical analysis (MSA) to the spectrum images, resulting in significantly reduced noise in the images. Most importantly, MSA permitted the clear identification of other elements in these Ni-enriched nanoprecipitates—including Mn and Cu. The processed X-ray spectrum images also provided direct evidence of the preferential formation of these irradiation-induced features along pre-existing dislocations within the steel, as well as the formation of intragranular nanoprecipitates. This research has provided the first direct X-ray spectrum images of irradiation-induced nanoprecipitates in high Ni A508 Gr4N forging steel, and has demonstrated the significant improvements attainable though the application of MSA techniques to the spectrum images. These results independently confirmed the analyses of the Ni-enriched nanoprecipitates previously conducted by 3D-APFIM, with the performance of the FEG-STEM/EDX technique shown to be comparable to that of the 3D-APFIM technique.     

企业核心员工激励机制的探讨

在全球化竞争和知识经济时代，核心员工成为企业战略性资源，也成为了人才市场上主要的争夺对象。核心员工一旦流失，将对企业造成不可估量的损失。本文分析了企业核心员工激励方面存在的问题，并重点对核心员工激励机制进行了一些有益的探索。     

烹饪专业师资队伍培养新构架探讨

通过对高校烹饪专业师资队伍建设进行研究,初步建立了一套烹饪师资队伍培养的新的立体构架.实践结果表明,采用该种立体构架后,烹饪专业师资队伍在文化素质、科研能力和技术水平等方面都有了明显的提高.     

加强师资队伍建设适应高职教学要求

对于那些由全国重点中专转制或合并而组建的高职学院的师资队伍建设 ,本文从师资队伍现状、发展高职教育对师资队伍的要求两方面进行了分析。     

论青年教师教学水平的培养

青年教师教学水平的培养是目前高等院校提高教学质量的重要问题．论介绍了武汉大学测绘学院为提高青年教师教学水平采取的若干措施及其效果．     

氟化钡晶体质子辐照损伤分布的计算

根据经典辐射理论，描述质子辐照BaF2晶体的能量损失，讨论受照晶体的辐照损伤分布，用Monte Carlo方法模拟碰撞过程，具体用TRIM程序分别计算出能量为1．5Mev和2．0Mev质子辐照BaF2晶体所产生的辐照损伤，对计算结果进行讨论，将这两种能量情况下的BaF2晶体辐照损伤分布进行比较。得到的结论与实验结果基本相符。     

加强青年教师培养建立高素质师资队伍

高校青年教师队伍建设是高校教学改革的关键.建立一支高素质的教师队伍是振兴教育的根本保证.加强对青年教师的培养和教育是高职院校师资队伍建设的重要一环.高职院校必须正视青年教师的师资现状,加强对青年教师的培养,以建立一支高素质的师资队伍.     

Cu diffusion in α-Fe: determination of solute diffusivities using atomic-scale simulations

The nucleation and growth of radiation-induced Cu-rich clusters have proved an important topic in the study of microstructural and chemical evolution responsible for property changes in pressure vessel steels subjected to neutron irradiation. Small Cu clusters can act as precipitate precursors and contribute to the hardening of the material by impeding dislocation glide. Reliable Cu diffusion coefficients provide critical input to Monte Carlo and rate theory approaches to study the kinetics of diffusion and clustering that lead to the formation of such Cu-rich features. In this paper we report the results of a molecular dynamics study of Cu solute-atom diffusion in a Fe–0.9at%Cu alloy, using high-temperatures and high-vacancy concentrations to hasten the convergence of the calculation. We find a value of 0.61 eV for the migration energy of Cu in the b.c.c Fe matrix, in good agreement with available experimental results. The main diffusion mechanisms under the conditions simulated are identified and discussed, and the effect of vacancy and solute clustering on Cu migration is assessed. In addition, a rigorous computation of the solute enhancement factor, correlation factor and solute diffusivity is performed within the five-frequency theoretical framework and the harmonic approximation. The results obtained are compared with those yielded by the direct MD simulations and the observed differences discussed.     

可降解温敏型共聚物PLGA-PEG-PLGA的合成及辐照法分子量调整

合成了不同嵌段的可降解的温敏型聚乙交酯丙交酯-聚乙二醇-聚乙交酯丙交酯共聚物（DL—lactide—co—glycolide-b-ethylene glycol—b—DL—lactide—co—glycolide，PLGA-PEG—PLGA）。用红外、核磁共振、凝胶渗透色谱等表征了其化学结构、分子量及分子量分布，研究了其相变过程。用辐照法成功地进行了PLGA—PEG—PLGA分子量调整。实验结果表明，在反应温度150℃催化剂辛酸亚锡0．04g反应8h，5．08g乙交酯与12．61g丙交酯（摩尔比为1：2）的条件下，产物溶于水后得到的水凝胶具有明显的相变过程。不同分子量的共聚物相变温度不同，在同定聚乙二醇分子量且共聚物溶液浓度相同条件下，共聚物中丙交酯与乙交酯比例越高，共聚物分子量越大，相同浓度下的分子量越大的共聚物形成的溶胶，凝胶转变温度越低，凝胶-溶胶转变温度越高。当辐照20kGy样品的分子量分布最大，从而改变凝胶的相变温度。