超声波美容原理与超声波美容机

描述了超声波的生物物理特性——机械按摩作用、温热作用和理化作用。在此基础上,讨论了超声美容的作用机理。文中还对超声美容机的结构和主要电路进行了分析。     

Fine details on the surface of human hair

Some previously unreported fine variations in the form of normal hairs are described as they are observed in the scanning electron microscope (SEM). They all arise in the course of surface frictional wear and the chipping away of the hair surface scale edges and include remanent surface impressions of cuticle scale edges, 'false' scale edges, granular surface remnants and highly irregular (chevron) scale patterns. Mechanisms are proposed for the way in which each of these different fine features arise.
The paper also contains deliberations on the conditions for operating the SEM consistent with obtaining the best information about the architecture of hair surfaces. The correctness of viewing orientation of scanning electron micrographs is also emphasized to avoid misinterpretation of features on the hair surface.     

An Integrated System for Modeling,Animating and Rendering Hair

There are basically four problems to solve in order to produce realistic animated synthetic actors with hair: hair modeling and creation, hair motion, collision detection and hair rendering. This paper describes a complete methodology to solve these basic four problems. We present how hair styles may be designed with our Hair Styler module. Then we survey the animation model and emphasize a method of collision processing. Finally, we explain how hair may be rendered using an extension of a standard ray-tracing program. We also show applications of our synthetic actors with various hair styles and different styles of mustaches and beards.     

Evaluation of an in vitro percutaneous permeation model with two oxidative hair dyes

The percutaneous permeation of two oxidative hair dyes was measured by means of pig skin in a flow-through diffusion cell system entirely constructed from Teflon. Pig skin membranes were prepared by reducing full thickness skin with a dermatome to a more in vivo -like barrier layer and their integrity was checked by measuring the steady-state permeation of tritiated water. Initially, the inter- and intraindividual variability of percutaneous permeation was determined with an aqueous solution of 1-(2'-hydroxyethyl)-amino-3,4-methylenedioxybenzene-hydrochloride, an oxidative hair dye component. In the same way the proper flow rate of elution fluid through the receptor cell was found to be most favourable at 10 ml h^-1, the thickness of permeation membranes was fixed at 1 mm, and it was shown that storage of the skin at −20°C for up to 35 days did not change the permeability. The percutaneous permeation of the same hair dye component and of 4-amino-2-hydroxymethylphenol-hydrochloride was determined after application to pig skin membranes under practical conditions of hair dyeing. The in vitro skin permeation was in the same order of magnitude as results from comparable in vivo skin absorption studies in rats.
Perméation percutanée in vitro de colorants d'oxydation pour cheveux     

Role of proteins in cosmetics

The review critically evaluates the safety and effectiveness of proteins or peptides in cosmetic formulations designed for skin and hair care. Special attention is paid to soluble collagen and the use of this fibrillar protein in combination with detergents.
The authors indicate various misconceptions on the mechanism of the effect of collagen and possible risks if the formulations containing collagen are not used on intact skin. Besides the moisturizing effect of collagen on the stratum corneum, the formation of a protective layer on the surface of the skin or hair, and the formation of complexes with detergents and the mechanisms of the effectiveness of this protein are considered.
Le role des proteines dans les cosmetiques     

A sweeping algorithm for cluster hair rendering

projection-based sweeping algorithm , is developed to render hair images using the cluster model. Compared with a previous ray-tracing algorithm, the new algorithm offers several significant improvements: (1) it avoids the complex and expensive computation of the ray–cluster intersection; (2) it eliminates the time-consuming density-value evaluations at the sample points along a ray during ray tracing; (3) it allows more flexible variation of the density map along the trajectory to enhance the natural appearance of hair; and (4) it allows easier coarse/fine control over the density map for multi-resolution rendering. As a result, the new algorithm significantly improves rendering efficiency and hair image quality. Compared with the existing hardware-supported, texture-mapping projection methods, the new method allows more sophisticated shading models, accurate shadow calculation, and uniform handling of arbitrary slice orientations with accurate opacity accumulation. Published online: 22 May 2003     

马克思主义的真善美因素及对教育的启示

本文从真善美统一的角度,对思想政治理论课教育进行了探索。作者认为,在思想政治理论教育中必须把求真教育、求善教育和求美教育结合起来,使学生在接受马克思主义理论时充分感受到马克思主义强大的理论力量,崇高的社会理想和美的享受。     

新世纪的建筑创作观——对于适用、经济与美观的再认识

当前的建筑学经过近三十年的快速发展,已经由曾经的理论匮乏进入各种观点与形式眼花缭乱的时期,我们缺乏的不再是多样性,而是对于基本原理的回归,我们需要朴实的理论,深邃、宏大的哲理都需要落在实处,要深入到各个方面去。建国初期所提倡的建筑方针:实用、经济、美观,经过多年的检验,仍然是建筑发展的基本之点。     

试论审美消费与重庆地区经济发展

通过审美消费经济的内涵和特征描述 ,从重庆消费市场现状论述本地区发展审美消费存在的优势和不足 ,提出解决问题的具体方法。论证发展审美消费的可行性 ,指出发展审美消费对促进经济增长的重大意义 ,为重庆经济转轨过程中调整产业结构和扩大消费市场提供思路