生产系统的状态与危险源结构

描述了生产系统存在的三种状态 ;即安全状态、危险状态和事故状态 ,把危险源分为固有型危险源和触发型危险源进行了分析研究 ;提出了构成生产系统重大事故的危险结构 ,认为人们可通过对系统固有型危险源和触发型危险源的有效监控和管理 ,达到使系统安全的目的。     

中子辐射防护服的设计、结构与效果

系统地阐述了中子辐射防护服的设计依据、结构、式样及使用效果。表明这是一种能有效地屏蔽热中子和中能中子的防护器具,可用于许多场所。     

松阳峰洞岩迪开石的矿物学研究

本文较详细地描述了产于浙江松阳峰洞岩迪开石矿床中的6个迪开石样品的矿物学特征;同时,发现部分样品中存在迪开石-高岭石无序混层,偏光显微镜下呈扇形蠕虫状,扫描电子显微镜下呈似香蕉状,波谱曲线上也有一定的显示,认为该混层是高岭石向迪开石转换过程中的中间产物。 峰洞岩迪开石的结晶度(HI)值与结构内全铁含量(x)间呈良好的负线性关系,线性回归方程为HI=1.811-5.787X,相关系数r=-0.9731,表明迪开石的结晶程度明显受控于其结构内类质同象置换的全铁含量。峰洞岩迪开石系热液蚀变而成,形成温度在110～140℃之间,不超过160℃。     

The Middle Eastern small towns

In recent years there has been a large increase in the number of small towns with populations between 5,000 and 10,000 in the Middle East. They represent an immense variety of urban types fulfilling a great range of functions. This paper looks at the characteristics of these settlements and argues that they have been largely neglected in the study of Middle East urbanisation and calls for comprehensive national urban planning orientated towards the needs of small towns.     

应用蚕豆根尖细胞微核技术监测环境致突变物的研究进展

综述了国内外应用蚕豆根尖细胞微核技术检测环境突变物的研究。表明：蚕豆根尖细胞微核技术经济，简单，可靠且实验条件要求不高，应予推广使用。对该技术存在的一些问题也应引起注意，需进一步深入研究。     

森工贮木场消防安全评估的内涵和方法

研究森工贮木场消防安全评估的内容、分类、原理及其森工贮木场消防安全评估的方法,确定了森工贮木场消防安全评估的任务、意义.     

Structure and Properties of Chicken Feather Barbs as Natural Protein Fibers

The structure and properties of chicken feather barbs makes them unique fibers preferable for several applications. The presence of hollow honeycomb structures, their low density, high flexibility and possible structural interaction with other fibers when made into products such as textiles provides them unique properties unlike any other natural or synthetic fibers. No literature is available on the physical structure and tensile properties of chicken feather barbs. In this study, we report the physical and morphological structure and the properties of chicken feather barbs for potential use as natural protein fibers. The morphological structure of chicken feather barbs is similar to that of the rachis but the physical structure of the protein crystals in chicken feather barbs is different than that reported for feather rachis keratin. The tensile properties of barbs in terms of their strength and modulus are similar but the elongation is lower than that of wool. Using the cheap and abundant feathers as protein fibers will conserve the energy, benefit the environment and also make the fiber industry more sustainable     

Estimating and valuing the carbon sequestered in softwood and hardwood trees, timber products and forest soils in Wales

Models of carbon storage in softwood and hardwood trees and forest soils and its emission from timber products and waste are developed and integrated with data on storage benefits to yield estimates of the value of the net carbon flux generated by afforestation. The long-term nature of the processes under consideration and the impact of varying the discount rate are explicitly incorporated within the model. A geographical information system (GIS) is used to apply carbon sequestration models to data on tree growth and soil type distribution for a large study area (the entire country of Wales). The major findings are: (1) all three elements under analysis (carbon sequestration in livewood, release from different products and waste, and storage or emission from soils) play a vital role in determining overall carbon flux; (2) woodland management has a substantial impact upon carbon storage in livewood however the choice of discount rate exerts the largest overall influence upon estimated carbon flux values; (3) timber growth rates (yield class) also have a major impact upon values; (4) tree species does affect storage values, however this is less important than the other factors listed above; (5) non-peat soils generally sequester relatively low levels of carbon. Planting upon peat soils can result in very substantial emissions of carbon which exceed the level of storage in livewood.The GIS is used to produce valuation maps which can be readily incorporated within cost-benefit analyses regarding optimal locations for conversion of land into forestry.     

Application of a Swab Sampling Method for the Detection of Norovirus and Rotavirus on Artificially Contaminated Food and Environmental Surfaces

Noroviruses and rotaviruses are the leading causes of non-bacterial gastroenteritis in humans worldwide. Virus-contaminated food and surfaces represent an important risk to public health. However, established detection methods for the viruses in food products are laborious and time-consuming. Here, we describe a detailed swabbing protocol combined with real-time RT-PCR for norovirus and rotavirus detection on artificially contaminated food and environmental surfaces. Recovery rates between 2 and 78% for norovirus and between 8 and 42% for rotavirus were determined for contaminated food surfaces of apple, pepper, cooked ham and salami. From contaminated environmental surfaces (stainless steel, ceramic plate, polyethylene, wood), recovery rates between 26 and 52% (norovirus) and between 10 and 58% (rotavirus) were determined. The results demonstrate the suitability of the swab sample method for virus detection on food and environmental surfaces. Compared to other methods, it is easy to perform and significantly time-saving, predestining it for routine testing.     

组合螺纹烟管锅炉性能与安全可靠性

本文对钢耗颇低——为目前常用水管锅炉的60％～70％,而且制造安装颇简易的“组合螺纹烟管锅炉”的结构与性能作了详细论述,并全面分析了其中“螺纹烟管筒”的工作特点与安全可靠性问题。