宜州“百姓人”家屋文化及其变迁研究

文章透过婚礼、出生礼、贺新房等仪式所彰显的象征意义探析了“百姓人”传统家屋的空间及其象征意义，通过家屋文化在现代化过程中发生的变迁的论述，探讨了传统文化在现代化进程中的两面性。     

探求高等数学中的对称美

高等数学中的对称关分为三类：形式和结构的对称性、命题关系中的对偶性及解题策略中的对称法。     

居住环境与绿化设计

居住区环境设计是一门新兴的学科。其规划理论需要进一步提高和丰富。为了创造舒适、方便、安全、卫生、美观的居住区和提供生活、休息、娱乐的优美环境，居住区环境设计即成为综合性新学科。居住区绿化设计的目的是要保持和利用原有地形、地貌，形成丰富的空间，要因地制宜，随坡就势，运用造园手法，组织各有特色的住宅组团，形成生活方便、环境优美的居住新村。本文就居民区空间功能的划分、住宅庭院绿化的布置进行了阐述，同时对居民区绿化的树种选择进行了说明。     

NiAl基复合材料的研究进展

为了提高NiAl合金强度，改善NiAl合金塑性，在制备NiAl复合材料时，用不同的制备方法在NiAl合金中加入增强剂，如陶瓷或金属颗粒、晶须、短纤维和长纤维等制成复合材料，以不同的增强剂为基础总结了NiAl基复合材料研究在制备、结构、性能及机理等方面的最新进展。     

论企业会计政策选择对会计信息的影响

企业会计政策本质上是一种经济和政治利益的博弈规则和制度安排。企业选择不同的会计政策会产生不同的会计信息，导致企业利害关系集团不同的利益分配结果和投资决策行为，进而影响社会资源的配置效果和结果。因此。应采取多种措施减少企业会计政策选择对会计信息产生的负面影响，来确保会计信息真实、公允、可信。     

护环成型技术及质量控制的新进展

回顾了近年来在发电机护环各制造环节研究中所取得的主要成果,简要介绍了原材料冶炼、热成形制坯、强化性能三个关键工序攻关中取得的最新进展.针对当前生产中的难题和沿用工艺的缺点,开发的电渣熔铸坯料、包套冲挤(扩挤)热成形制坯新技术,能够解决热锻开裂、变形不均匀的难题,并可缩短工艺流程,提高产品质量与生产效益.研究的内增压或外增压液压胀形强化新方法,可以提高工艺过程的可控制性,并能扩大液压胀形的应用范围.     

New BCN Fibres for Strong Ultraviolet and Visible Light Luminescence

Novel B3CN3 fibres with a special structure have been synthesized by a pyrolysis process. High-resolution TEM analysis shows that the as-prepared B3CN3 fibres can be described as a nanofibre-interweaved network. Strong photoluminescence at 370 nm and 700 nm from the as-prepared B3 CN3 fibres are observed at room temperature, which suggests that B3 CN3 is a promising ultraviolet- and visible-light-emitting material.     

Effects of Post-Thermal Treatment on Quality of SiC Grown by PVT Method

We report the effects of post-thermal treatment on the quality of 2-inch 6H-SiC wafer cut from a crystal boule grown by physical vapour transportation method. The full widths at half maximum of x-ray diffraction rocking curves measured on sites across the 2-inch wafer become narrower, indicating the quality improvement after a three-step post-thermal treatment. It is found that the most common defects such as micropipes and inclusions can be significantly reduced after the treatment. Our results show that the post-thermal treatment is an effective route to improve the quality of SiC single crystals.     

垂直上升管内液体横掠流动传热特性研究

本文对单相水和单相油横掠流动时的平均换热特性进行了实验研究,对试验的结果进行了分析和讨论,并对实验数据进行关联,得到了垂直上升管内单相水和单相油横掠流动时的换热准则关系式。结果表明,狭窄空间条件下的液体横掠柱体时的流动换热对液相Re数的依赖,较大空间条件下的流动换热相比明显减小,并对单相水和单相油横掠流动时的换热性能进行了比较。     

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As the ITER first wall Be/CuCrZr hot isostatic pressing (HIP) bonding intermediate transition layer, Ti/Cu layer can form a multi-layer intermediate metal phase, and defects such as cracks occur between the Ti/Cu metal phases. CuCrZr was used instead of Be, and a number of CuCrZr/Ti/Cu/CuCrZr joints were fabricated by the same HIP process as Be/CuCrZr to analyze the Ti/Cu joints. The effects of stress relief annealing on joint strength and defect distribution of the joints unannealed, annealed at 400°C and 500°C respectively were studied. The results show that three layers of Ti/Cu diffusion layers are formed on both sides of the intermediate titanium layer, namely Cu₄Ti, CuTi and CuTi₂. The thickness of Cu₄Ti on the pure copper side is thicker than that on the CuCrZr side, so that the crack is almost entirely distributed at the junction of Cu₄Ti and CuTi on the pure copper side where brittle fracture is easy to occur in the tensile samples. As the annealing temperature increases, the generation and propagation of cracks decreases.