Steelmaking and its future

The world steel industry has grown steadily for the past twenty years and there should be no long-term slackening in demand. Nevertheless, the whole pattern of the industry is changing in response to technological innovation; new economic, political, and social factors; and the energy crisis. This authoritative article reviews recent developments and their implications with regard to the location of new steelworks; to the processes they use; and to their scale of operation. There has recently been a growth in the number of electric-arc mini-works.     

燃料及其利用

燃烧原理灭火方法燃烧对环境的影响     

生物多样性及其保护

一、生物多样性的主要类别 生物多样性包括植物、动物和微生物以及这些物种所携带的遗传资源.生物多样性是生物及其与环境形成的生态复合体以及与此相关的各种生态过程的总和.现在.     

TD-LTE技术及其优势

本文主要阐述了TD-LTE技术的主要特点及其技术优势,并阐述了该技术的发展现状和未来走向。     

什么是物理社会学？它有什么用处？

一、从孔德讲起 法国的孔德（1798—1857）被认为是“实证哲学”的鼻祖,前苏联的主流哲学家都判定他为主观唯心主义者、马克思主义的敌人。如何评价实证哲学本文不讨论,但“实证”概念在自然科学家中却影响很大。因为做实验就是为了寻求理论的实证。当然会有人挑剔说孔德的“实证”与科学家的标准不同,但即便如此,     

The thymus and its role

The thymus was first clearly described as long ago as 1522, by Berengario in his Isagoge, but its physiological significance has only very recently become apparent. It is now clear that this small organ plays a key role in organising the immunological defence mechanisms of the body. This article reviews current ideas in the action of the thymus, and the possible repercussions in medicine and our clearer understanding of its function.     

粒及粒命题逻辑

本文定义了粒的概念及相关概念,引入了数理逻辑中五个命题逻辑联结词表,并从粒的角度分析并讨论了粒的联结词,使得粒的命题联结词与数理逻辑的命题联结词吻合地很好,并且应用于数据约简过程中。     

浅谈太赫兹波技术及其应用

太赫兹(THz)波是指频率在0.1T—10THz(波长为3000—30μm)范围内的电磁波。本文简单介绍了太赫兹波的主要特征及其在成像、军事安全、生物医学、天文物理等方面的应用。     

信息推理及其运用

生动的事实说明,信息推理对领导的科学决策是何等的重要。通过推理,可促进信息深化,扩大信息量,使信息增值,发掘信息的潜在作用。实践中,经常使用的信息推理方法有:联想推理、因果推理、类比推理、假设推理、反向推理和预测推理等几种。