兔毛产品的生产工艺探讨

论述了兔毛优良的环保特性,分析了兔毛产品掉毛、起球及缩水产生的原因,提出了结合兔毛的特点,采用改造过的棉、毛结合设备,加工纯兔毛产品的设想,阐述了梳前准备工序、梳毛工序、并条工序中应注意的问题,并建议根据兔毛的品质开发我国独特的兔毛系列产品.     

浅谈骆驼绒的物理性能和应用

骆驼绒是珍贵的纺织原料,详细阐述了骆驼绒的截面形态、长度、细度、卷曲、比电阻、摩擦性能等物理性能,并简要介绍了骆驼绒的主要产品与用途。     

Three-dimensional imaging and analysis of the surface of hair fibres using scanning electron microscopy

Cuticle scales are the most obvious feature of a hair fibre's outer surface and much research has focused on assessing the influence of surface topography on the associated hair fibre's properties. However, much of the research has either been qualitative or, if quantitative, employed relatively laborious analytical techniques to establish the necessary statistical robustness. In this study, we report on the application of a 3D image analysis package capable of producing 3D data from multiple 2D scanning electron microscope (SEM) images of hair fibres. Analysis of the surface profile can be carried out quickly and accurately, enabling quantification of the scale structure. To validate the novel technique and ensure that the scale heights measured were indeed accurate and reproducible, extensive calibration of the SEM and the 3d software has been performed. In addition, scale heights on a single hair have been determined by using atomic force microscopy (AFM) and the results compared with analogous data produced from the same scale edges using the 3D image analysis technique. The data obtained indicate that a relatively quick, accurate and viable method to determine scale height in keratin fibres has been established. A further 3D-SEM analysis method has been developed which allows individual scales to be monitored and for the cuticular scale height to be quantified after repeated 'smoothing' treatments.     

Differences in thermoregulatory ability between slick-haired and wild-type lactating Holstein cows in response to acute heat stress

Animals inheriting the slick hair gene have a short, sleek, and sometimes glossy coat. The objective of the present study was to determine whether slick-haired Holstein cows regulate body temperature more effectively than wild-type Holstein cows when exposed to an acute increase in heat stress. Lactating slick cows (n = 10) and wild-type cows (n = 10) were placed for 10 h in an indoor environment with a solid roof, fans, and evaporative cooling or in an outdoor environment with shade cloth and no fans or evaporative cooling. Cows were exposed to both environments in a single reversal design. Vaginal temperature, respiration rate, surface temperature, and sweating rate were measured at 1200, 1500, 1800, and 2100 h (replicate 1) or 1200 and 1500 h (replicate 2), and blood samples were collected for plasma cortisol concentration. Cows in the outdoor environment had higher vaginal and surface temperatures, respiration rates, and sweating rates than cows in the indoor environment. In both environments, slick-haired cows had lower vaginal temperatures (indoor: 39.0 vs. 39.4°C; outdoor 39.6 vs. 40.2°C; SEM = 0.07) and respiration rate (indoor: 67 vs. 79 breaths/min; outdoor 97 vs. 107 breaths/min; SEM = 5.5) than wild-type cows and greater sweating rates in unclipped areas of skin (indoor: 57 vs. 43 g.h⁻¹/m²; outdoor 82 vs. 61 g.h⁻¹/m²; SEM = 8). Clipping the hair at the site of sweating measurement eliminated the difference between slick-haired and wild-type cows. Results indicate that slick-haired Holstein cows can regulate body temperature more effectively than wild-type cows during heat stress. One reason slick-haired animals are better able to regulate body temperature is increased sweating rate.     

Empirical relationships between beauty and justice: Testing Scarry and elaborating Danto.

Elaine Scarry (1999) proposes a correspondence between engagement with beauty and a sense of justice. Parallel to Scarry, Arthur Danto (2003) posits that 20th century artists avoided producing beautiful works because of an offended sense of justice. In Study 1, the relationship between justice reasoning (DIT2; Rest et al., 1999a) and engagement with beauty (Diessner et al., 2008) is examined; there is a significant raw correlation (r = .23; p     

Time-Course Expression Profiles of Hair Cycle-Associated Genes in Male Mini Rats after Depilation of Telogen-Phase Hairs

Jcl:WistarTGN(ARGHGEN)1Nts rat (Mini rat) is a growth hormone (GH)-deficient transgenic rat. The hair cycle in the dorsal skin of male Mini rats enters a long-lasting telogen phase after eights weeks of age, but depilation can induce a transient hair cycle again. In this study, a time-course profiling of genes expression was done on the dorsal skin of male Mini rats along the progression of depilation-induced hair cycle using DNA microarray analysis. As a result, 1,215 probe sets including 1,171 hair cycle-related ones showed more than 3-fold changes in expression compared with that in before-depilation telogen phase. The present data will contribute to elucidating the mechanisms of hair cycle regulation and should lead to the identification of novel molecular targets for hair growth and/or depilation agents.     

三剂型天然染发剂中预处理剂的应用研究

三剂型天然染发剂采用天然氨基酸为主原料配制预处理剂(A剂)对头发进行预处理,以媒染剂(B剂)与中药五倍子提取物(C剂)络合赋予人发自然黑色.影响染色效果的因子较多,但以A剂的影响较大.在B剂、c剂因子水平固定的情况下,研究了A剂中氨基酸用量、A剂预处理过程中pH、时间和温度等对染色效果的影响.结果表明,A剂中氨基酸质量分数为10%,预处理过程中pH=8～9,30℃～35℃,15 win～20 min时,染色效果较佳.     

氢氧化钙在保毛法脱毛中的作用

本文利用石灰的护毛作用,以黄牛皮为对象,对保毛法脱毛工艺进行了研究,讨论了氢氧化钙的护毛作用中相关的影响因素     

含混的自然美

自然美虽然定义颇多,但把各家观点集合在一起看,发现自然美没有一个统一的定义,或者说是一个含混的概念。自然美和自然、自然美和意识与思想、自然美和自然主义等这些概念都是探讨自然美中的脱不掉干系的关系。本文通过对各家关于自然美的阐述,来尽可能在这些关系中对自然美这个含混的概念进行适当的理清,从而使我们更清楚地认识自然美。