国外老年人幸福感研究述评简

老年人幸福感是反应老年人生活质量以及心理健康的重要指标,其相关研究对我国实现成功老龄化有重要意义。本文对国外老年人幸福感研究进行分析梳理,对老年人幸福感的概念、测量、影响因素与结果变量进行述评,并提出老年人幸福感效应链,最后,本文提出目前存在问题与研究启示。     

以人为本与管理善治

以人为本是科学发展观的核心,坚持以人为本是我党新时期提出的新要求.古今中外的管理思想都以以人为本为本源,而善治是以人为本理念的彰显,二者结合下的制度建设和完善是和谐社会实现的条件.     

An introduction to life cycle assessment with hands-on experiments for biodiesel production and use

This paper describes a hands-on project that introduces first year engineering students to life cycle assessment (LCA) through the comparison of the environmental impact of the production and use of three diesel fuels: petroleum diesel, biodiesel from new vegetable oil, and biodiesel from waste vegetable oil. The purpose of this LCA project was to incorporate life cycle thinking into the engineering design process, to apply the four main steps of LCA (definition and scope, inventory analysis, impact assessment and improvement assessment), and to explore some of the challenges associated with each step. The inventory for biodiesel production (from both new and waste vegetable oils) was based on measurements obtained by the students in laboratory experiments. The fossil diesel production inventory was obtained from the SimaPro^® database. The inventory for the use of all three fuels was obtained from measurements taken during combustion of the fuels in a generator. A cradle-to-grave life cycle analysis was then conducted using SimaPro^® for each fuel. The assessment of learning outcomes indicates a significant increase in conceptual understanding of the four stages of life cycle assessment, and an average gain of over 55% in overall knowledge of life cycle assessment.     

道路老化沥青性能再生研究

道路沥青在使用后将会发生老化现象,老化后沥青的组分发生了改变,在性能上表现为软化点上升,针入度降低,延度降低等。文章通过对老化沥青组分组成进行分析,通过改变老化沥青组分达到沥青再生的目的,研究表明通过掺加沥青和再生剂来进行复合再生要比单纯的采用一种办法再生具有更好的效果。再生后的沥青三大指标符合路用沥青的使用标准,完全可以用于铺筑新道路的使用,甚至可以通过添加改性剂达到改性沥青的标准。     

21世纪的化学工业发展趋势及人才培养要求

２１世纪化学工业的发展趋势将出现高新技术化、高速差异化、生态绿色化, 因此, 对化工人才的培养要求树立全面发展的人才观、个性鲜明的人格观、可持续发展的生态观。     

Effect of precipitation from tweed matrix on the mechanical properties in a metastable beta alloy of Ti-15-3

The effects of aging treatment on the microstructures and mechanical properties of a metastable beta titanium alloy Ti-15-3 (Ti−15V−3Al−3Sn-3Cr) have been investigated with hardness measurements, tensile test, and optical and electron microscopy. Precipitate-free beta structure with average grain size of about 56 μm was obtained after solution treatment at 800°C for 15 min followed by air cooling. Solution treated specimens were aged up to 800 h in the temperature range between 350 and 600°C. The morphology of the precipitates was varied significantly, depending on the aging temperature. The fine aggregates of α precipitates were dominant above 450°C. Peak hardness values were maintained up to 800 h at 500°C, which showed the superior thermal stability of α precipitates. Tensile strength increased up to 1600 MPa along with the decrease of elongation after aging at 350 and 400°C.     

中国石化老年活动中心与老年大学工作存在问题及应对措施

通过对中国石化离退休人员基本情况、老年活动中心和老年大学基本情况进行分析,找出老年活动中心和老年大学工作中存在的问题,并根据工作经验总结及数据分析结果,提出加强基础设施建设、发挥思想阵地作用、丰富老年文化生活、办好老年大学、提升服务管理水平、加强队伍自身建设等应对措施。     

把移民安置工作做得更好

建国以来，水库移民1000余万人，对我国水利水电建设作出了积极贡献，但也存在一些需要研究解决的问题，为此，对当前水利水电工程移民安置出现的一些问题，从设计，管理，移民工程招投标，监理，验收等方面进行了揭示和论述。认为，今后一是要严格按照规范要求，努力提高移民安置规划设计质量，增强规划设计可操作性，二是要加强移民安置实施管理，提高移民安置实施质量，减少失误。     

老年补益奶粉的生产工艺研究

本文根据老年人的生理特点研制出老年补益奶粉。减少了奶粉中饱和脂肪酸含量和蔗糖用量，同时添加了具有补益作用的莲子，灵芝、植物油，ＡＶ、ＶＥ、ＶＣ和硒等成分。     

老龄平台极限强度评估

采用简化逐步破坏分析法计算一座老龄平台主体极限强度，该平台在一次正常作业中折断。通过极限强度分析，找出了该平台失事原因是底部纵骨稳性不足，同时说明了为了合理评估老龄平台安全性，做极限强度分析是非常必要的。