Fruit acid extracts, a fresh approach to skin renewal

Alpha-hydroxy acids are a common class of naturally occurring chemicals that have become increasingly popular for cosmetic use. Currently alpha-hydroxy acids from both natural and synthetic sources are being used in skincare products. From lactic acid to complex natural blends, several different approaches have been adopted for the use of alpha-hydroxy acids. This paper reviews the history of alpha-hydroxy acids use in cosmetics and gives new data showing the increased rate of cell renewal by topical application.     

高级小字库技术

本文介绍了一些小字库的高级技术，包括静态排序、对分搜索、动态维护、驻留ＶＲＡＭ等。应用这些技术可大大提高西文方式下显示汉字的效率。文末给出了用Ｃ语言实现的动态维护及驻留ＶＲＡＭ程序。     

Therapist empathy, genuineness, and warmth and patient therapeutic outcome.

A study aimed at cross-validating previous research suggesting that the levels of the therapist's accurate empathy, nonpossessive warmth, and genuineness were causally related to the degree of patient improvement or deterioration. An equal number of "good" or "poor" therapy prospects were randomly assigned to 4 resident psychiatrists (10 patients each) for 4 mo. of psychotherapy. Results tended to confirm the importance of the 3 therapeutic conditions in combination and of empathy and genuineness separately. Negative findings for separate analysis of therapist's warmth were interpreted in terms of its negative correlation with empathy and genuineness in the present sample. On the overall measure for all patients, therapists providing high therapeutic conditions had 90% patient improvement while those providing lower conditions had 50% improvement. (17 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The surface renewal model of wall turbulence for boundary layer flow with transpiration

The object of this paper is to develop and evaluate the basic surface renewal modeling approach for transpired turbulent boundary layer flows. Using a simple form of the surface renewal model in conjunction with the standard mixing length representation of the turbulent core, calculations are established for the dimensionless burst frequency s⁺, and distributions in velocity u⁺ within the inner region as a function of transpiration rate v⁺ and pressure gradient P⁺.     

Reliability engineering based on field information—The way ahead

Based on analysis of field reliability information a reliability model proper for engineering is developed and demonstrated. The development of the model is performed by applying the well known but often forgotten scientific method in which theoretical models are continuously compared with observations and subsequently modified/further developed until a reasonable consistency has been achieved. The tools used are by no means advanced. The model presented has been applied successfully in many industrial case studies, one of which will be described in the paper.     

蜡油催化装置烟气轮机改造

分析了蜡油催化装置双级烟气轮机运行故障的原因,根据分析结果实施了相应的技术改造,用单级烟气轮机替换了原有的双级烟气轮机。运行结果表明,改造后烟气轮机的运行状况得到明显改善与提高,机械系统运转平稳,提高了机组的可靠性,检修频次恢复正常。     

修理设备可更换且修理延迟的两同型部件并联可修系统

本文假定部件的寿命服从指数分布,其修理延迟时间和修理时间均服从一般分布,并且修理设备的寿命服从指数分布,其更换时间服从一般分布,利用马尔可夫更换过程理论,研究了修理设备可更换且修理有延迟的两同型部件的并联可修系统,求得了系统的可用度和(0,t)时间内的平均故障次数。进一步,在定义修理设备“广义忙期”下,利用全概率分解,提出了分析修理设备可靠性指标的一种新技术,并得到修理设备的一系列重要可靠性结果。     

Guidance for Exposure and Risk Evaluation for Bystanders and Residents exposed to Plant Protection Products during and after Application

Plant protection products are applied in agriculture and horticulture in areas that may be accessible to the public. This means that individuals might be exposed who are not actively involved in the application of these products. The individual may be temporarily located in the vicinity of the application (the so-called ‘bystander’) or working or living in the vicinity of the application (the so-called ‘resident’). In this guidance paper scenarios for the evaluation of exposure associated with plant protection product application for bystanders and for residents (including children) are described. Received: June 20, 2008; accepted: June 26, 2008     

由广东省“三旧改造”引发的对城市更新的思考

低层次快速工业化和城镇空间连绵化是当前广东省城市更新面临的两大核心问题.长期以来城镇建设用地的低效开发带来土地存量资源的严重不足.为突破城镇建设中土地资源的瓶颈,广东省全面推动实施“三旧改造”规划,寄希望于通过全面拆迁改造实现城市产业升级和空间重构的双重目标.本文从规划思想、公益保障、组织模式、资格准入、成本核算、规划...     

城市更新中的利益冲突与规划协调

结合城市更新的类型和模式的划分,重点分析不同类型和模式城市更新中的利益主体构成、利益冲突形式以及利益冲突的焦点,认为城市更新中利益冲突的焦点集中在政府、开发商和产权人之间的规则性冲突、分配性冲突和交易性冲突,在此基础上,提出了城市更新中规划协调的公平性、全局性和伦理性立场,并针对性的提出了相应的规划协调策略。