Progress in selective laser melting equipment,related biomedical metallic materials and applications

This paper introduces the latest achievements of the South China University of Technology in basic research on selective laser melting (SLM), applications of SLM manufacturing equipment, and biomedical metallic materials manufactured by SLM. First, we describe the use of DiMetal-100 equipment to study the process parameters, microstructure, and mechanical properties of three kinds of metal medical materials manufactured by SLM, including 316L stainless steel, CoCrMo, and Ti6Al4V. Second, we describe the application of 316L stainless steel manufactured by SLM to personalized lingual orthodontic brackets and surgical guide plates, the application of CoCrMo manufactured by SLM to knee prostheses and dental crowns and bridges, and the research results of Ti6Al4V manufactured by SLM in the treatment of pelvic fracture bone plates and personalized cranial prostheses. Finally, we introduce the development directions and research plans for SLM technology at the South China University of Technology, including the manufacture of a new porous structure by SLM directly, the manufacture by SLM of various material products simultaneously, SLM + material-reducing hybrid manufacturing, improving the negative feedback systems of SLM equipment, and developing SLM manufacturing processes using ceramics and new metals.     

BIOS程序修改在机房管理中的应用

讲述如何利用 BIOS(基本输入输出系统)的修改工具对主板的 BIOS 信息进行修改如设置万能密码个性化启动画面以提高对公共机房的管理效率．     

义渠考

义渠为战国时代不同于华夏民族的一支少数民族。其与秦国战争不断，最终为秦所灭。秦昭襄王、宣太后和义渠关系复杂。关于义渠的族属争论较多．或以之为戎、或为狄、或为羌。然戎、狄皆为对异族的泛称，义渠为羌说论据亦不充分。义渠本身就是族称。为其族自称．和匈奴、鲜卑等民族一样，既是国名，也是族名，最后成为氏名。义渠地域包括今陕西、甘肃、宁夏的大部分。然义渠王城及活动地区主要在汉北地郡，今甘肃宁县西北。     

论合同的成立

合同的成立是指订约的当事人就合同的主要条款达成合意，违反合同的当事人要负违约责任，合同的成立分为要约和承诺两个阶段。     

孔子"信"伦理观念的管理价值

孔子“信“伦理观念中的取信于民思想、诚实守信思想、信以待人思想,对现代企业管理以及职业道德建设具有重要的现实意义.把中华民族的传统美德与体现时代要求的新的道德观念相融合,是我国企业文化建设发展的方向.     

MBA寓言二则

(一) 有一个国王因为没有孩子,就想找一位诚实的孩子做王子.     

试论邓小平哲学思想的特点

该认为邓小平哲学思想是指导我们建设有中国特色社会主义事业的理论基础，邓小平哲学思想的形成具有实践性、表述方式具有民族性、内容具有全面性和创造性、功能具有时代性。     

转变观念积极实行学分制

职业学校实行学分制，有利于调动学生积极性，适应社会对人才需求的多样化，学分制要求管理和教师改变教育观念，建立新的管理模式。     

Mechanical Properties and Degradability of Electrospun PCL/PLGA Blended Scaffolds as Vascular Grafts

In our study, the mechanical properties and degradability of vascular grafts made from poly(ε-caprolactone)(PCL) and poly(lactic-co-glycolic acid)(PLGA) at different ratios were investigated. The results showed that the electrospun PCL/PLGA grafts possess good mechanical properties and biodegradability. The tensile and burst strength of the scaffolds met the demands of vascular grafts. In vitro degradation tests indicated that the degradation rate of the materials increased with the percentage of PLGA, and in vivo tests showed that increasing the amount of PLGA is an effective way to promote cell infiltration. Particularly, the electrospun PCL/PLGA blended scaffold with 10% PLGA exhibited a balance of mechanical and degradation properties, making it a promising tissue engineering material for vascular grafts.     

基于协同过滤算法的微博平台的信息推荐研究

将改进的协同过滤算法应用于微博平台的信息推荐,拓展微博算法的应用范围,增加微博平台的可用性,提高信息推荐的结果准确性,更好地满足用户的信息需求.首先分析协同过滤技术及其如何应用于微博信息推荐,并将基于微博文本特征的推荐算法与传统的推荐算法相对比,再融入微博用户兴趣度,得出更优的推荐算法.运用改进的协同过滤算法提高微博平台的信息推荐质量,使微博平台信息推荐更加精准、有效.