适应教育改革形势提升美术教学内涵

在教育改革的形势下 ,走进新课程 ,体验、探索新的美术教学 ;让学生自己去观察、猜测和讨论 ,在感知中愉快、轻松地学习 ,获得新知识 ;联系其他学科知识 ,拓展美术教学的内涵     

Recent trends in the formulation of permanent waving products for hair

Current trends in the formulation of permanent waving products for hair are discussed in light of recently reported findings on the reactivity of disulphide bond in the hair keratin and theories on the mechanism of permanent waving. Effectiveness of protein and other additives is discussed in detail. Nouvelles tendences dans la formulation des produits pour permanente     

护毛法回收的猪毛通过爆发性膨胀处理的溶解性

本文报导了通过爆发性膨胀增加猪毛溶解度的方法,从而使得保毛脱毛法所回收的猪毛能够得到更有效的利用。     

Some simple theoretical considerations on the bending stiffness of human hair

Factors affecting the cantilever bending of human hair have been investigated by theoretical structural mechanics in which the hair was treated as if it was of isotropic structure and internal mechanical property. Despite the simplicity of the model it is a valuable one for assessing the major geometric factors affecting a hair's bending behaviour in relation to perceptions of coarseness and fineness. Simple equations have been used for predicting relative bending stiffness between hairs of different racial types using published fibre cross-sectional information and these accord with existing perceptions of behaviour. Strikingly it is the hair's minor elliptic diameter which has a dominant effect upon bending resistance and it is shown that the hair's cuticle could be making a very high proportional contribution. It is shown that triangular hairs of the uncombable hair syndrome will be stiffer than normal elliptical hairs of the same cross-sectional area and that this goes some way to explaining the condition.     

A comparative study between AFM and SEM imaging on human scalp hair

A comparative study of AFM and SEM imaging of the same area of a human scalp hair has been carried out to determine the similarity and the differences between the two techniques. Sample preparation for SEM analysis requires a metallization step and vacuum exposure, both of which could potentially induce modifications to the surface details. By contrast, AFM is a suitable technique to evaluate any effect resulting from sample manipulation because it can be applied without any specific treatment. AFM analysis demonstrates that sample metallization is responsible for modifications to the surface details of hair, mainly comprising an increase in height of scale steps and of root mean square roughness together with variation in scale profiles. Sample treatments for SEM imaging are in general potentially responsible for surface modifications to the samples involved.     

对适用、经济、美观的再本土化解读

在信息时代对适用、经济、美观的理解应该立足于全球化所需要的融合国际化和本土化的“再本土化”过程,从“再本土化”角度具体诠释了这三个原则,指出中国建筑应警惕邯郸学步的覆辙。     

天祝白牦牛被毛组织结构及超微结构

为合理开发利用天祝白牦牛被毛纤维,用光学显微镜与扫描电子显微镜相结合的方法,对天祝白牦牛被毛各类型纤维的组织结构和超微结构进行观察研究。结果表明:天祝白牦牛身体不同部位的绒毛与两型毛纤维组织结构和超微结构基本相似,不同部位粗毛纤维的组织结构存在一定的差异,特别是髓质层结构差异较大;不同类型纤维鳞片层结构有所差异,鳞片密度排序为粗毛两型毛绒毛,且绒毛与粗毛差异极显著(P0.01);鳞片高度和厚度的变化均为绒毛两型毛粗毛,且绒毛与粗毛间差异显著(P0.05)。