灰色聚类法在选矿效益综合评判中的应用

本文描述了用灰色聚类法进行选矿效益综合评判的方法和步骤,给出了评价多金属矿选矿效益的实例。     

选矿效益的模糊积分评价法

本文将模糊积分应用于选矿效益的综合评价,给出了主观评价模型和近似客观评价模型。对选矿中各指标、各因素反映总体效益的模糊性,提供了合理的量化方法。文中通过实例说明了评价方法的应用。     

水厂铁矿铁精矿品位整体动态优化

以提高从矿山至高炉炼铁厂的综合效益为目标,开发了用于优化铁精矿品位的专用软件,用模糊综合评判法确定优化的铁精矿品位.当铁精矿品位、成本和生铁价格改变时,可用该软件评估采矿、选矿、烧结、球团、炼铁的总效益和生铁产量.在建立选矿、烧结、球团、炼铁数学模型的基础上,用该软件进行了水厂铁矿精矿品位的优化,得出水厂铁矿优化的精矿品位是TFe67.92%.     

德兴铜矿富家坞采区氧化矿的综合评价与合理利用

根据生产实际的技术经济参数,考虑钼的回收效益,建立氧化矿在选矿生产中的效益平衡简式,据此对这部分氧化矿进行综合评价与合理利用,从而合理回收矿产资源、提高矿山经济效益、促进矿山可持续发展。     

下垄钨矿选矿废水复用工程综合评价

本文介绍了下垄钨矿选矿废水复用工程的对策和做法,工程实施后综合效益的评估。     

2006年云南选矿年评

在广泛查阅2006年国内选矿科技期刊、文献的基础上，对云南选矿科技工作者发表的论文和云南选矿科技工作的进展，从矿石准备作业、选矿、选矿设备、选矿自动化等五个方面进行了综合评述。     

河南东沟钼矿选矿工艺研究设计

针对河南东沟钼矿,通过矿石性质、选矿试验的分析,对拟定的选矿工艺方案进行了分析比较,确定了设计合理的选矿工艺流程,对设备选型、设备配置及特点进行了综合论述。     

2014年云南选矿年评

在广泛查阅2014年度国内外矿业科技期刊、文献的基础上,对云南选矿工作者发表的选矿科技论文,云南选矿科技工作研究现状,从碎矿与磨矿、选矿工艺、选矿药剂、选矿设备及自动化、工艺矿物学等方面进行了综合评述。     

白云鄂博铁矿磁铁矿石品位指标的优化

以矿山开采的经济效益和资源回收效益为目标,通过系统建模方法,在建立矿体储量模型、选矿模型和综合技术经济分析模型的基础上,采用模糊综合评判方法,对白云鄂博铁矿的矿石品位指标进行了多目标优化.研究结果表明,该矿的边界品位指标应由目前的20%调整为15%,调整后可使矿山获得12041万元的增量经济效益和91.54万t铁精矿的增量资源回收效益.     

2013年云南选矿年评

在广泛查阅2013年全国矿业科技期刊、文献的基础上,对云南选矿工作者发表的选矿科技论文,云南选矿科技工作研究现状,从碎矿与磨矿、选矿工艺、选矿药剂、选矿设备及自动化、工艺矿物学等方面进行了综合评述.     

Perceived benefit and mental health after three types of disaster.

The study of growth and perceived benefit after traumatic events has been hailed as one of the most promising directions for stress research. This research, however, has been limited by several methodological limitations. These limitations are addressed in this prospective study, which examines perceived benefit and mental health adjustment after 3 different types of disaster. Survivors of a tornado in Madison, Florida, had the highest rates of perceived benefit, followed by survivors of a mass killing in Killeen, Texas, and survivors of a plane crash in Indianapolis, Indiana. Perceived benefit 4-6 weeks postdisaster predicted posttraumatic stress disorder 3 years later. Perceived benefit moderated the effect of severity of disaster exposure on mental health diagnosis change over time. Without perceived benefit, as exposure severity increased, the amount of recovery decreased. If benefit was perceived, as exposure severity increased, the amount of recovery increased. Implications for clinical interventions and future research are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of decreasing sick leave benefits--results of a survey of Social Health Insurance members

In Germany, a sick employee usually continues to get his wages from his employer for six weeks either in full or reduced. After that period, he only receives "sick benefit payments" (so-called Krankengeld) from the statutory bodies, which, up to 31 December 1996, amounted to 80% of his original gross wage earnings. This has been cut down to 70% of the gross wage earnings effective 1 January 1997. The purpose of this study was to assess the consequences of this general cutdown of sick benefits. A standardised questionnaire was posted to a total of 7,036 female recipients of sick benefit who were members of a South German statutory health insurance body and who resided in various parts of Germany (membership as on 17 December 1996). 2,416 completed questionnaires were returned by 19 February 1997 (= 34.9%). The average daily sick benefit payment dropped from DM 91.95 in December 1996 to DM 82.39 in January 1997, which is equivalent to a sick benefit payment reduction by 10.4 per cent. The average extra cost caused by the illness and not covered by sick benefit amounted to DM 152 per month; one-quarter of the questioned patients were even compelled to pay DM 200 per month extra from their own pocket. Sick benefit recipients must accept a very substantial real monthly income loss. The average income of an employee who is ill for more than 6 weeks is more than a quarter below that of a healthy employee. 78.5% of the questioned persons rated the financial burden and privations caused by the sick benefit cutdown as "extremely heavy" or "considerable". It became evident that the majority of the female patients receiving sick benefit were chronically ill (62.6%). The most frequently reported diseases were diseases of the spine (30.3%) and joints (16.3%), injuries and accidents (14%) and psychiatric illnesses (8.5%). The results of the survey show that the political motive underlying the attempted modification of illness behaviour by means of economic incentives to be healthy, is far removed from reality, for the cutdown of sickness benefit severely affects a group of gainfully employed persons who are in the midst of a deep existential crisis and sorely in need of extensive physical and mental support. From the sociomedical aspect the sick benefit cutdown is highly problematical as far as this group of persons is concerned, since recovery and cure are impeded by measures that lower the status and are experienced as punitive.     

天然气应用于铝焙烧预焙阳极的效益分析

针对目前国内铝用预焙阳极焙烧炉常用燃料(人工煤气、重油和天然气),从直接经济效益、间接效益和社会环保效益方面进行了对比分析,得出了"铝用预焙阳极焙烧采用天然气做为燃料是最为理想"的结论。     

含砷硫化渣的综合利用研究

对国内某公司处理制酸废水所产生的硫化砷渣的综合利用进行了系统的研究工作,提出了完整的硫酸高铁法工艺流程。可以从中回收砷、铋、铜、铅、锌、硫等有价元素,具有显著的经济效益、环境效益和社会效益。     

The aroQ and pheA domains of the bifunctional P-protein from Xanthomonas campestris in a context of genomic comparison

A large number of drug trials for prevention of restenosis have been conducted with many showing little or conflicting benefit. Antiplatelets such as aspirin, ticlopidine and thromboxane A2 receptor inhibitors have not shown a clear benefit. Similarly, antithrombotics, either acting indirectly such as heparin, or as direct thrombin inhibitors such as hirudin and hirulog, do not prevent restenosis. Trials with ACE inhibitors, HMG-CoA reductase inhibitors and fish-oil supplements have yielded inconclusive results. The antiproliferatives, angiopeptin, trapidil and tranilast have shown some benefit in small-scale studies. Other drug classes of potential benefit include the glycoprotein IIb/IIIa receptor antagonists, inhibitors of the early coagulation cascade, calcium channel blockers and nitric oxide donors. Drug research into restenosis prevention has been hampered by problems with the definition of restenosis and the applicability in humans of animal models. Although no single drug has conclusively proven effective yet, the promise of a number of agents, together with other nonpharmacological strategies will likely result in further reductions in the incidence of restenosis.     

国际工程项目编标报价策略探讨

针对国际承包工程,讨论了编标报价基本要求和技巧,以及工作过程中应注意的一些问题。论述了以保证企业的经济利益,适度考虑社会效益为原则,如何在国际承包工程的编标报价中做好研究招标文件、确定投标价格及报价策略等问题。     

构建我国行政公益诉讼制度研究

行政公益诉讼作为维护公益的一种途径,在西方国家已广泛采用,其中最重要的是对政府的行政行为发挥监督作用。我国行政法研究起步较晚,很多制度还不完善,行政公益诉讼制度更是新鲜事物,但它的巨大社会作用已经成为共识,因此建立我国的行政公益诉讼制度已刻不容缓。     

唐钢庙沟铁矿浓缩池小车滑线的改进

由浓缩池小车滑线引发的故障在生产过程中频繁发生,增加了事故时间和设备成本,制约着产量和效益的提升。文章介绍了对滑线进行改进的步骤、方法,通过成功改进,取得了良好的效益。     

企业营销道德缺失的环境分析及对策

营销道德是指为调整企业与所有利益相关者之间关系的行为规范的总和,其实质是要解决好企业如何承担社会责任,协调好企业利益与公众利益的关系,杜绝损害社会和公众利益的营销行为。重视企业伦理,分析营销道德缺失的主要表现和环境因素,避免不道德经营带来的损失,是企业营销道德建设的重要内容。