Contributions to the chemistry of human hair: II. Lipid chemical aspects of permanently waved hair

The cell membrane complex (CMC) and the internal lipids of untreated and permanent waved hair were investigated. The permanent waving procedure results in a lower amount of the cell membrane fraction that could be isolated compared to untreated hair. There is no difference in the amino acid composition of the CMC fractions. The internal hair lipids were extracted from the CMC fraction with chloroform/methanol. For untreated human hair the cell membrane complex yields 57% of lipid material, whereas from the CMC of permanent wave hair only 35% of lipids could be extracted. The polar lipids and the fatty acids are the main components of the internal hair lipids. After a permanent waving treatment there is a distinct decrease in the polar lipid fraction which is higher at alkaline (pH 9) than at neutral pH (pH 7). The reduction treatment at pH 9.0 also causes a cleavage of the fatty acid fraction in the internal hair lipids.     

酶脱毛过程中毛组织结构观察

用光学显微镜、扫描电镜及组织切片法分别对酶脱毛不同时间段内的毛根组织结构及不同脱毛方法的灰皮进行组织结构观察，结果可以解释说明不同脱毛方法的作用机理。     

手工纸与现代艺术

纸与艺术有不解之缘。手工造纸作为对自然的回归,给予艺术家创造力与想象力发挥到极致的自由空间也给现代艺术带来了更多的可能。     

牦牛毛拉伸改性研究初探

综述了牦牛毛的性状及国内外对牦牛毛改性研究现状，根据羊毛拉伸细化的原理及已取得的成果，指出牦牛毛拉伸细化的重要性及其可行性。     

Grey hair: clinical investigation into changes in hair fibres with loss of pigmentation in a photoprotected population

Loss of pigmentation in hair fibres is one of the most obvious phenotypic changes with ageing and has been a topic of increasing interest in the study of follicle biology. The onset of greying brings cosmetic complaints that grey fibres are wild or difficult to manage. Of course, these perceptions may be the consequence of visual obviousness rather than underlying physical or chemical differences. Although several studies have compared pigmented and unpigmented fibres, few have tried to control genetic and ethnic difference as well as extrinsic factors such as photoexposure and chemical treatment. We have recruited subjects with salt-and-pepper hair from a population of Old Order Mennonites who, for cultural reasons, are not only prohibited from chemically treating their hair but also limit their exposure to sunlight. Hair samples were examined for elemental composition, surface energy, Young's modulus, break stress, bending modulus, shear modulus and water sorption/desorption isotherm. The parameters were evaluated statistically for global differences, individual differences and typical individual differences. Consistent with previous published literature, few global differences were found between pigmented and unpigmented hair across the population. We do find that many individual subjects had differences between pigmented and unpigmented fibres. These differences tend to be more pronounced in bulk than in surface properties. The small differences in mechanical properties and moisture uptake and loss lend support to the perception by consumers that grey hair is wilder, drier and less manageable.     

Effects of a new mild shampoo for preventing hair loss in Asian by a simple hand-held phototrichogram technique

This study was conducted to evaluate the effects of a commercially available shampoo in Korean subjects with alopecia using a simple hand‐held phototrichogram technique. Forty‐four subjects with alopecia were enrolled and forty subjects continued for 16 weeks. In the test group, total hair counts increased significantly at weeks 8 and 16, and the number of shedding hair significantly decreased at week 16. Terminal hair counts significantly increased at week 8. In the control group, hair thickness and the number of vellus hairs significantly decreased at week 16. The number of total hairs significantly increased in the test group than in the control group at weeks 8 and 16. The number of shedding hairs significantly decreased in the test group than in the control group at week 16. Visual assessment using clinical digital images showed that the number of total hairs appeared to increase although there was no statistical significance. In this study, it was found that the test shampoo could prevent hair loss.     

浅论室内设计中现代简约主义与中国传统文化的关系

中国传统文化博大精深,古老的哲学、灿烂的文明深刻地影响着现代生活的各个方面,室内设计作为社会文化的构成部分,追求与环境和谐共处的思想,体现了中国人"天人合一"的生存思想。室内设计中的民族传统文化与现代文化并不是孤立和对立的,而是一个不断发展和互动的过程。以现代化的设计手法,以"取其形,延其义,传其神"为原则,将传统室内设计元素加以提炼升华,使得民族传统文化与现代文明互相整合,形成中国式室内设计风格,使现代室内设计更加趋于完善。     

儿童连身裤舒适性与美观性的判别研究

采用主观评价的方式,对儿童连身裤的静态美观性与动态舒适性进行主观评价．根据主观评价的结果,进行因子分析和聚类分析,建立不同类别儿童连身裤的结构判别模型．通过判别分析,对儿童连身裤的舒适性与美观性进行判剐,将主观感受客观化,从而提高儿童连身裤结构设计的工作效率．     

全球头发定型剂和固定剂纵览

对过去4年的头发定型剂和固定剂的发展情况作了综述,讨论了各公司的定型剂和固定剂品牌的概况,市场对定型剂和固定剂产品的需求不断增长.进一步讨论了定型剂和固定剂配方中所使用的聚合物和流变改性剂的发展情况.不断研发出许多新的聚合物和流变改性剂,推动了定型剂和固定剂市场向前发展.     

城市森林公园景观美景度评价及影响 因素分析

当前,对城市森林公园美景度影响因素的体系构建及要素量化还处于探索阶段,对访客群体差异性及其机理研究不足。以南昌市瑶湖郊野森林公园为例进行景观美景度研究,对上述问题进行了深入分析,为城市森林公园景观设计质量提升提供科学依据。分层选取4种类型40个景观样本,分别进行大众群体评价和设计要素细分。以正态分位数法计算每个样本的美景度值(SBE)。采取逐步回归分析法和最佳子集分析法,分别建立美景度值和影响因子的评价模型,结果如下。1)从类别看,美景度排序为：道路景观>建筑及小品景观>水体景观>植被景观。2)10个评价因子均与景观美景度显著相关,其中“设施协调感”关联性最强。3)评价因子对美景度的影响程度排序为：设施协调感>空间尺度感>场景均衡性>画面联想性>景观主从性>形式统一感。4)不同性别群体对比,女性评价均值高于男性,离散系数低于男性。5)不同居住地和受教育程度对景观审美均产生影响。结论表明,公园环境美景度与研究所界定的景观设计评价因子有直接关联,但不同的评价因子对美景度的影响程度不同。6个评价因子对环境营造和设计方法有着直接的启示意义。通过逐...