基于Sybase数据库的贵冶劳资应用系统

本文全面介绍贵溪冶炼厂计算机中心开发贵冶劳资计算机应用系统软件产品的平台环境、开发工具及功能.客观地分析了该软件的优势及产生的综合效益.     

Sustainable construction in China: status quo and trends

The structural challenges facing China's construction industry are reviewed here. China's current practical intitatives, barriers and problems in moving towards sustainable development are considered: demonstration ecological villages, innovative walling materials, research on passive solar buildings and the improvement of earth buildings.     

健康建筑观

文章提出了健康建筑的两种基本设计方法,并分析了相应的具有典型意义的实例,最后阐述了这种与自然共生的建筑设计在发展中国家的意义,提倡用适宜于自身国情的技术来实现建筑可持续发展。     

Explaining the differential distribution of Clean Development Mechanism projects across host countries

The Clean Development Mechanism (CDM) of the Kyoto Protocol represents an opportunity to involve all developing countries in the effort to reduce greenhouse gas emissions while also promoting sustainable development. To date, however, the majority of CDM projects have gone to emerging markets such as China, India, Brazil, and Mexico, while very few least developed countries have hosted projects. This paper investigates the differential distribution of CDM activities across countries. We develop a conceptual model for project profitability, which helps to identify potential country-level determinants of CDM activity. These potential determinants are employed as explanatory variables in regression analysis to explain the actual distribution of projects. Human capital and greenhouse gas emission levels influenced which countries have hosted projects and the amount of certified emission reductions (CER) created. Countries that offered growing markets for CDM co-products, such as electricity, were more likely to be CDM hosts, while economies with higher carbon intensity levels had greater CER production. These findings work against the least developed countries and help to explain their lack of CDM activity.     

我国高职类高分子专业发展现状的研究

根据近三年高职类高分子专业的招生计划等相关信息,本文分析和总结了我国高职类高分子专业的发展现状,并提出了扩大高职类高分子专业招生规模的建议。     

我国合成树脂工业的发展

综述了我国合成树脂工业发展的现状和前景,并对新世纪我国合成树脂工业的发展提出了一些建议     

论我国电池装备的近期发展方向

1 前言 随着电动器具的普及和人民生活水平的提高,我国电池工业迅速发展。八十年代起,我国原电池产量位于世界首位。但从电池的品种结构上来看,仍处于落后状况,因而越来越难以满足国内外市场对高容量,高可     

试论21世纪初期河南盐业的可持续发展策略

文章就21世纪初期河南盐业将采取控制盐产量,提高质量,发展新品种,巩固市场,增加效益,确保市场供给,防止和消除碘缺乏病及对河南盐业的发展作了初步的探讨。     

The role of technology transfer for the development of a local wind component industry in Chile

This paper contributes to the debate about climate change technology transfer by analysing barriers and enablers for a Chilean company starting up the production of wind blades. Literature on the role of technology transfer for the development and deployment of local renewable energy technologies in developing countries often refers to success stories in Brazil, India and China. Instead, this case study highlights the different challenges faced by smaller emerging economies. The paper argues that successful technology transfer in a smaller economy like Chile requires: a minimum internal demand and access to regional markets to attract foreign knowledge providers; a focus in the types of technologies where the recipient country or company have a competitive advantage; and active learning processes by the recipient company. Lessons are drawn for improving the design and implementation of technology-push and market-pull policies in small or medium emerging economies.     

A numerical study of vortex interactions with flames developing from ignition kernels in lean methane/air mixtures

In this work, the outcomes of interactions of counter-rotating vortex pairs with developing ignition kernels are studied. The conditions are selected to represent those in a lean-burn natural-gas engine with hot-jet ignition. The evolution of flame surface area during kernel–vortex interaction is quantitatively and qualitatively examined. It is observed that flame development is accelerated and the net flame surface area growth rate, i.e. heat release rate, increased with increasing vortex velocity. In general, increasing the vortex length scale increases the surface growth rate, i.e. increases heat release rates, but for small length scales, i.e. when the ratio of vortex length scale to kernel diameter is small, high flame curvature induced during the interaction leads to flame weakening and slower growth rates. When the vortex velocity is high relative to the flame speed and the length scale is comparable to the kernel diameter, the vortex breaks through the ignition kernel carrying with it hot products of combustion. This accelerates growth of the flame surface area and heat release rates compared to a kernel with no vortex interaction. On decreasing the vortex velocity and increasing the length scale, the wrinkling of the kernel becomes important. This also results in increased surface growth rates and higher heat release rates.