搜索结果: 106-120 共查到“知识库 材料科学其他学科”相关记录784条 . 查询时间(3.925 秒)
结合Sn--3.5Ag和Sn--3.0Ag--0.5Cu两种无铅钎料研究了镀镍浸金层(Electroless Nickel Immersion Gold, ENIG)表面层对焊点界面反应以及力学性能的影响。结果表明, 钎焊后在Sn--3.5Ag/ENIG/Cu界面主要生成(NiyCu1-y)3Sn4,在Sn--3.0Ag--0.5Cu/ENIG/Cu界面主要生成(CuxNi1-x)6Sn5。在Sn...
A review on an employee empowerment in TQM practice
A review an employee empowerment TQM practice
2010/4/12
TQM is a journey and it never ends. A change is the only permanent. TQM is a philosophy and strategy minded customer. The word total implies that all members of the organization make
consistent effor...
Integration of part classification, cell formation and capacity adjustment
Integration part classification cell formation capacity adjustment
2010/4/12
In today’s competitive market improving productivity is of great concern for any manufacturing firm. Production engineers continuously adapt state-of-the-art techniques and methodologies in order to a...
Development of cartilage conduction hearing aid
Industrial management and organization Safety and health management Hearing aid Sound conduction via tragal cartilage
2010/4/2
It is well known that physical function deteriorates with increasing age [1], and hearing ability is no exception [2, 3]. A hearing aid is usually supplied to elderly people with a hearing impairment....
Corrosion of evaporator tubes in low emission steam boilers
Corrosion Low-emission steam boiler Evaporator tubes Sulfide corrosion
2010/4/2
Corrosion of water walls is the serious problem in low-emission coal fired boilers operation. Modification of combustion process was developed for limitation nitride oxides (NOx) emission. Ashes and s...
Influence of management system on the safety level in chosen enterprise
management system safety level enterprise
2010/3/12
During competitive market, advanced technologies and the intensive exploitation of resources, the number of natural and technical threats grew up considerably. The large economic growth rate causes in...
Postural analysis in HMI design: an extension of OCRA standard to evaluate discomfort level
Postural analysis HMI design an extension OCRA evaluate discomfort level
2010/3/12
Machine ergonomic studies are able to develop design evaluation parameters in order to provide a help to designers, buyers and users in choosing design and/or product solutions. In
industrial environ...
Global gene expression analysis for evaluation and design of biomaterials
Global gene expression analysis evaluation design of biomaterials
2010/2/28
Comprehensive gene expression analysis using DNA microarrays has become a widespread technique in molecular biological research. In the biomaterials field, it is used to evaluate the biocompatibility ...
Cell and biomolecule delivery for regenerative medicine
Cell biomolecule delivery regenerative medicine
2010/2/28
Regenerative medicine is an exciting field that aims to create regenerative alternatives to harvest tissues for transplantation. In this approach, the delivery of cells and biological molecules plays ...
以NH4H2PO4和FeSO4·7H2O为原料，H2O2为氧化剂，通过液相法合成FePO4·xH2O前驱体，将FePO4·xH2O，Li2CO3和葡萄糖球磨混合以低温固相法合成正极材料LiFePO4，研究溶液浓度对前驱体FePO4·xH2O和LiFePO4的影响；采用X线衍射(XRD)和扫描电镜(SEM)对样品的晶体结构和形貌进行表征，采用比表面积分析和原子发射光谱分析等手段比较不同的溶液浓度对产...
Chosen aspects of knowledge management in enterprises
aspects of knowledge management enterprises
2010/2/12
The knowledge management is relatively young scientific discipline of interdisciplinary character. It depends on joining and synergy of many various areas: enterprise management, personnel management,...
Gas-assisted injection moulding is a process that allows obtaining hollow parts. The purpose to use it is to manufacture plastic parts of big thickness without sink marks and warpage and, moreover, to...
四边简支压电层合板灵敏度分析的精确解
压电材料 层合板 灵敏度分析 Hamilton正则方程
2010/1/27
为了应用弹性力学中的Hamilton 正则方程研究压电材料的灵敏度系数问题，基于压电材料的H-R(Hellinger-Reissner) 变分原理，简要地导出Hamilton正则方程算子表达式，建立了四边简支板静力学控制方程。根据灵敏度定义，在静力学控制方程的基础上联立灵敏度控制方程，得到了增维的齐次压电材料静力响应和灵敏度系数混合控制方程。应用该方程可以同时求得压电层合板的力学、电学参量及其灵敏...
含界面相的单向纤维增强复合材料三维应力场的二重双尺度方法
二重双尺度方法 三维应力场 界面相 单向纤维增强复合材料
2010/1/27
提出了计算含界面相的单向纤维增强复合材料三维应力的二重双尺度方法。在性能预报方面，首先对界面相和纤维进行均匀化得到均匀化夹杂，然后对均匀化夹杂和基体进行均匀化得到宏观均匀材料；在应力场描述方面，从宏观均匀场出发，利用双尺度渐近展开技术经过两次应力场传递，依次得到单胞和应力集中区域的应力场。与有限元方法相结合，计算了宏观轴向均匀拉伸载荷条件下含界面相的单向纤维增强复合材料的三维应力场分布。数值结果表...