赣州生产人造金刚石

赣州生产人造金刚石赣州有色冶金研究所自行研制生产人造金刚石，最近获得成功。据专家鉴定：该新生产的人造金刚石，经酸洗，分选，晶体完整、强度高、色泽好，达到国家标准。目前，该所按预定程度合成的人造金刚石产品达到５５％，单产已由原来的２．８克拉提高到５．３...     

行业动态

·行业动态桃锰人造金刚石试产成功为广开生产门路、改善矿山产品结构、增强企业的市场竞争能力，１９９４年底，桃江锰矿开发了人造金刚石这一新的产品．经过半年多的设备安装与调试，该矿人造金刚石厂的１号压机与２号压机分别于１９９５年１０月１９日和１０月２２日试...     

从合成棒中提纯人造金刚石的工艺研究

叙述了合成棒的组成及其物理、化学性质，根据其不同的性质及从合成棒中提纯人造金刚石的原理，进行了粗去石墨、精除触媒、石墨、叶腊石等试验，探讨了试验条件的变化对提纯结果的影响，并确定了从合成棒中提纯人造金刚石较佳的工艺条件。     

人造金刚石用的触媒合金的研制

本文简介人造金刚石行业概况和触媒合金的发展现状以及广东省钢铁研究所研制人造金刚石的触媒合金及其应用。     

我国人造金刚石的生产技术与开发的探讨

分析了我国近年来人造金刚石的生产技术、现有的工装设备、检测技术及国内的人造金刚石的市场情况，并与国外作了相应的比较。同时据此提出了我国人造金刚石开发的建设性意见。     

人造金刚石用的触媒合金的研制

本文简介人造金刚石行业概况和触媒合金的发展现状以及广东省钢铁研究所研制人造金刚石的触媒合金（Ｎｉ７０Ｍｎ２５Ｃｏ５））及其应用。     

人造金钢石快速电解提纯工艺研究

对人造金刚石快速电解提纯方法的原理进行了分析，介绍了该方法的基本工艺流程、电解波配方及工艺参数的选择，并对人造金刚石合成片中石墨与电解速度的关系、电流密度与溶解速度的关系、阳极电流效率、电解液温度与电解速度的关系、溶液流动速度与电解速度的关系等进行了讨论．     

人造金刚石合成棒的快速电解法

本文通过对沂蒙冶炼厂人造金刚石合成棒的电解试验，介绍了人造金刚石和触媒的快速电解分离方法。该法可以取代。“酸洗法”，没有污染，在提纯金刚石的同时，能回收触媒金属。     

触媒合金组织与合成人造金刚石的关系

利用金相显微技术分析了合成人造金刚石后的Ｎｉ７０Ｍｎ２５Ｃｏ５触媒合金的组织。同时，还研究了合成棒中触媒片正，反面人造金刚石的生长分布状态，并对改善金刚石晶体生长环境的途径作了初步探讨。     

科技简讯

科技简讯赣州有色所研制人造金刚石成功被称为硬度之王的金刚石用途十分广泛，在切削、钻探和摩擦等工具中广泛使用，金刚石拉丝模更是常用的微细丝生产工具。由于天然金刚石储量很少，难以满足工业生产需求。各地竞相研制，最近赣州有色冶金研究所自行研制生产人造金刚石...     

Synthetic 2-amino alcohol derivatives as chiral auxiliaries

This work describes both the concepts used in an Object Manager for storage of medical images as one more data type associated to objects, and a support system developed to offer this kind of tool to medical application developers. The purpose of this work is to support the retrieval of images through queries based on the graphical contents of the stored images. The usual approach uses icons and textual attributes stored with the images to specify the queries. This work uses a novel modeling technique to define the "image data type," by means of which it is possible to decide, before the query itself, the key data of each image that must be extracted from the image when it is stored in the database, so the search can be accelerated when queries are issued. This approach enables building of expansible systems, where new image processing algorithms can be added easily, using its syntactic representation stored through an Image Meta-schema into the application database schema. This work shows how such a system has been implemented, and also provides a query language used to refer and execute these algorithms from inside the database management system.     

Synthetic peptides for diagnostic use

Interdisciplinary teaching rounds were initiated on a general surgery service at a university teaching hospital. These rounds were designed to promote more efficient patient care by providing an opportunity for enhanced communication among health-care professionals. Improved collaboration is a prerequisite for implementation of critical paths and case management. The authors describe their methods of rounds development and the impact of the rounds on patient outcomes.     

合成硫化铜的细菌浸出研究

对合成硫化铜进行了细菌浸出试验,考察了Fe2+浓度和矿浆电位对铜浸出率的影响,以及细菌在铜浸出过程中的作用。结果表明,在Fe2+浓度88mg/L、矿浆电位大于550mV、浸出30天时铜的浸出率大于99%,细菌绝大部分是以间接作用机理进行浸出的。     

电渣重熔技术综合分析

电渣重熔的技术经过50余年的发展，已经成为电渣冶金学的一个重要分支。本文简要阐述了用电渣重熔技术生产高档次特厚钢板的可能性和必要性，同时根据科技和市场的发展分析了电渣重熔技术可能发展的方向。     

Classification and Mechanical Behavior Relationships for Municipal Solid Waste: Study Using Synthetic Wastes

Mechanical behavior of the waste body controls many aspects of landfill lining system design and performance, including stability issues and integrity of the geosynthetic and mineral lining components. The constituents of municipal solid waste deposits vary between countries and regions and are constantly altering as a result of changes in lifestyle and legislation. This paper describes an investigation using a family of synthetic wastes to assess the relationship between classification and mechanical behavior of the waste body via a program of one-dimensional compression and direct shear tests. Measured mechanical behavior is compared with results for real wastes to assess the validity of using synthetic samples. Compression and shear behavior of the synthetic wastes were found to be within the range of published values for real waste. Both stiffness and shear strength values for a synthetic “real” waste were found to be at the lower bound of published values. Lower unit weights and dry conditions for the synthetic wastes are considered to be responsible for the observed differences with real waste behavior. It is concluded that synthetic wastes can be used to assess the relationship between classification and mechanical behavior and that compression and shear behavior can be related to waste classification.     

Synthetic real estate: bringing corporate finance to health care

The changing landscape of health care has caused hospitals, health care systems, and other health care organizations to look for ways to finance expansions and acquisitions without "tainting" their balance sheets. This search has led health care executives to a financing technique that has been already embraced by Fortune 500 companies for most of this decade and more recently adopted by high-tech companies: synthetic real estate. Select case studies provide examples of the more creative financial structures currently being employed to meet rapidly growing and increasingly complex funding needs.     

Synthetic validity: A conceptual and comparative review.

Describes synthetic validity as the logical process of inferring test-battery validity from predetermined validities of the tests for basic work components. Two programmatic approaches to synthetic validity are discussed: the J-coefficient and the job component model. The J-coefficient is a mathematical index of the test and job-performance relationships that has been shown to yield results comparable to intertest and criterion correlation methods of assembling test batteries. The job component model associates mean test-scores with job components and is related to criterion-related validation while the J-coefficient approach is more related to content validation. Other approaches have used ratings as criteria for component validities, but they must be free of the usual rater biases to be useful. It is suggested that the most important aspect of synthetic validity is in making selection decisions. (55 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Synthetic lipid A-induced uveitis and endotoxin-induced uveitis--a comparative study

Endotoxin-induced uveitis (EIU) is an animal model of ocular inflammation induced by lipopolysaccharide (LPS). The lipid A (LA) region of the LPS chemical structure is believed to be responsible for virtually all the biological activities induced by LPS. The aim of this study was to perform a more detailed investigation of the potency of LA in reproducing EIU. Various doses of either LPS or LA were injected into the footpad of an inbred strain of Lewis rat and the inflammation patterns were compared by assessing the protein concentration, by cytological study, and by determining the inflammatory cell content in samples of aqueous humor obtained during 96-hour follow-up. Evaluation of the cell number and protein concentration ratio of both groups showed the LA-stimulated group presented a higher ratio than the LPS group (Welch's t-test, (P < 0.00001). It was noteworthy that even the injection of high doses of LPS could not reproduce the level of cellular infiltration induced by LA. Histological study confirmed the enhanced cellularity in the LA group, neutrophils being predominant in both the LPS- and the LA-stimulated groups. The divergent findings in these two models of uveitis may be valuable to further investigations of the process of inflammatory cell migration into the anterior chamber of the eye.     

Synthetic peptides related to laminin pentapeptide (YIGSR) fragment

The synthetic laminin pentapeptide amide fragment (LF), Tyr-Ile-Gly-Ser-Arg-NH2 corresponding to a part of B1 chain of the glycoprotein, laminin, and six of its analogues having structural modifications at positions 1, 3 and 4 were synthesized by solid phase method employing mainly 9-fluorenylmethoxycarbonyl-amino acid trichlorophenyl esters as coupling agents and Merrifield resin as the solid support. Their biological activities were studied in vivo by lung tumor colonization assay and in vitro by cell adhesion assay. The activity of synthetic LF was found to correlate with the earlier reported results in both in vivo and in vitro assays. Among the analogues made, [Tyr4] LF and [Thr4]LF were found to inhibit the lung tumor colonies more efficiently than LF itself in the in vivo assay whereas [D- Ser4]LF exhibited almost the same inhibition as LF.