Investigation of Extreme-Pressure and Antiwear Properties of Antimony Thioantimonate

Detailed studies including synthesis, characterization and evaluation of antimony thioantimonate, SbSbS₁, have been carried out. The amorphorus complex chalcogenide was prepared by a solution precipitation method. As a solid-lubricant additive in various greases, this material exhibits superior extreme-pressure and antiwear properties as demonstrated by the Four-Ball weld points and load-wear indexes on both AISI-52100 and AISI-440C steels. Antimony thioantimonate appears to be compatible with all the base greases investigated including a silicone grease in which very few additives show good response.     

Design for the Future: Educational Institutions in the Gulf

Despite a distinguished heritage of learning in the Middle East, the expansion of provision for higher education is currently at an unprecedented scale. The Gulf States, in particular, are seeking to keep up with accelerated population growth and a demographic ‘youth bulge’. Guest-Editor Kevin Mitchell describes the architectural approaches employed in the design of institutions in the region from the first universities in Saudi Arabia to Foster + Partners's ground-breaking sustainable design for the Masdar Institute in Abu Dhabi and future projects.     

传承与创新--龙岩市行政中心方案创作谈

通过对龙岩币行政中心方案设计的介绍，论述了地方传统建筑对新时期行政办公建筑创作的启示和借鉴作用。     

加强建筑市场管理 提高建设工程质量──对建设工程质量的剖析

本文通过对我市建筑市场状况的分析,在市场经济条件下,如何加强建筑市场管理,发挥各职能部门的作用,提高建设工程质量进行一些肤浅的探讨。     

注册建筑师制度在中国的建立及管理统计

文章重点从政策层面比较系统地回顾了中国建设行业注册建筑师执业管理制度从建立到发展演变的过程以及注册资格国际互认方面的情况。     

Carlos Zapata and Antonio Citterio's Cooper Square Hotel,New York

Unlike most glamorous new high-rise apartment buildings in downtown Manhattan, this thin, tilted white glass tower provides homes away from home for chic out-of-towners. And what ‘homes’ they are. Upstairs are astounding long-range views; on the lower floors, a series of glass-walled lounges, restaurants, balconies, a garden and even a library with a wood-burning fireplace. And, as Jayne Merkel explains, these sensual pleasures are mixed with intellectual ones. There are art and travel books in every room and guests can enjoy ‘movie nights’ in the screening room.     

Automated Assessment of Early Concept Designs

Building information modelling (BIM) is a powerful tool for clients and architects alike, particularly when clients have ongoing complex programmatic requirements. Chuck Eastman describes how with his team* at the AEC Integration Laboratory at the College of Architecture at the Georgia Institute of Technology he was commissioned by the US federal government's General Service Administration (GSA) to automate the design guidelines for all US courthouses in such a way that preliminary designs by architects could be assessed and checked against specific criteria. Copyright © 2009 John Wiley & Sons, Ltd.     

核电厂堆芯物理试验功率亏损和功率系数项目的探讨

核电厂首次临界和后续燃料循环都需要进行一系列的试验,其中包括堆芯物理试验,目的是验证堆芯设计计算的正确性。国内压水堆核电厂物理试验由于堆型差异,存在多种堆芯物理试验管理文件。目前,国家核安全局（NNSA）的审评参照法国体系,将堆芯物理试验的文件（堆芯物理试验监督要求GORX）作为最终安全分析报告（FSAR）技术规格书的...     

New Food Safety Law: Effectiveness on the Ground

The demand for safety in the US food supply from production to consumption necessitates a scientific, risk-based strategy for the management of microbiological, chemical, and physical hazards in food. The key to successful management is an increase in systematic collaboration and communication and in enforceable procedures with all domestic and international stakeholders. The enactment of the Food Safety Modernization Act (FSMA) aims to prevent or reduce large-scale food-borne illness outbreaks through stricter facility registration and records standards, mandatory prevention-based controls, increased facility inspections in the United States and internationally, mandatory recall authority, import controls, and increased consumer communication. The bill provisions are expected to cost $1.4 billion over the next four years. Effective implementation of the FSMA's 50 rules, reports, studies, and guidance documents in addition to an increased inspection burden requires further funding appropriations. Additional full-time inspectors and unprecedented foreign compliance is necessary for the full and effective implementation of the FSMA.     

Identification and characterization of microbial contaminants isolated from stored aviation fuels by DNA sequencing and restriction fragment length analysis of a PCR-amplified region of the 16S rRNA gene

Microorganisms contaminating aircraft fuel tanks containing jet propellant-8 (JP-8) were isolated and identified by 16S rRNA gene sequencing. Thirty-three samples from six geographically separated airport bases were collected. Two bacterial genera were identified by DNA sequencing including the following isolates: Agrobacterium tumefaciens and Staphylococcus epidermidis. Populations of the above species recovered on culture media ranged from 10 to 10³ CFU/ml with Staphylococcus and Agrobacterium being identified in samples taken from more than one airport base. From the bacterial communities isolated and identified in this study, only Staphylococcus was previously reported to thrive in aviation fuel tanks. Changes in aviation fuel composition and/or the ability of certain microbes to grow under certain environmental conditions may account for the isolation of previously undocumented bacterial species in aviation fuel tanks. Restriction fragment length analysis of the PCR-product proved a more reliable, simpler and quicker method to distinguish S. epidermidis and A. tumefaciens than conventional DNA sequencing.