甘肃阳山金矿床工程地质特征

针对阳山矿区工程地质特征,探讨矿山开采时可能遇到的问题,从岩石工程地质岩组的划分、构造带工程地质特征及岩矿石顶底板稳定性等方面进行分析,并结合岩石物理力学性质测试结果,认为区内岩石工程地质岩组主要有松散软弱岩类、较软岩类、较硬岩类和坚硬块状岩类。矿体在形成过程中受构造带控制及影响,岩石较破碎,岩体稳固性大多较差,易发生不良工程地质问题,分析认为矿床开采技术条件属工程地质条件复杂类型。通过对矿区不同开采条件的分析,提出了开采中可能遇到的问题及初步解决的方法和建议。     

吉林省通化市复兴村金矿区工程地质问题评价

目前复兴村金矿区已完成部分详查工作,未来的开采必然引发一系列工程地质问题。矿区地表风化强烈、裂隙发育,断裂构造较发育,岩石质量较好,岩体质量较差,工程地质环境质量属于较差—中等。依据岩性、岩石力学性质将工程地质岩组划分为第四系松散岩类岩组,较坚硬薄层变质岩岩组、坚硬块状碳酸盐岩组、坚硬块状火山岩组,边坡及地下采空区围岩的稳定性是主要的工程地质问题。对可能存在的工程地质问题进行了预测并提出相应问题的防治建议,为后续的矿山开采技术条件提供必要的依据。     

基于高应力的岩土工程地质特征及变形力学机制研究

高应力软岩是指只有在高压条件下发生明显的塑性变形的一种特殊的岩石上,探讨高应力软岩的概念,出版和矿产高应力软岩进行了分类,从物质组成、商店环境、理化性质、水力性能、机械强度,从高应力软岩工程地质特征方面阐述了软化突变点,并对其变形力学进行了归纳和总结。     

青海门源县某金矿区工程地质与环境地质特征浅析

本文依据矿区岩石特征划分了三个工程地质岩组,即第四系松散岩类、基岩类和破碎带,并对井巷围岩岩体质量进行了评价;从自然生态现状、水文地质环境质量等方面分析了矿区现有的环境地质,对其矿床开发引起的环境影响进行了评价。     

会泽铅锌矿一号矿体岩体声波测试研究

通过对会泽铅锌矿一号矿体2053m、1844m、1764m水平不同区域的工程岩体进行声波速度测试研究,得出了不同部位工程地质岩组的岩体声波速度及传播特征。     

涞钢支家庄铁矿边坡岩体结构研究

根据涞钢支家庄铁矿边坡岩体岩组特征，结构面和结构体的组合特征，划分了岩体结构类型，分析了不同岩体结构我的工程地质特征，为确定岩体变形和破坏机制提供了依据。     

黑河市某金矿开采技术条件

通过对某金矿区地下水类型及补给、径流、排泄条件、充水因素等进行研究,预测矿坑涌水量,确定矿床的水文地质条件;根据矿区工程地质岩组分布特征、围岩稳固性评价、区域稳定性评价、放射性、地形地貌和土地资源情况,对矿区的工程地质和环境地质条件进行了分析,基本阐明了矿床开采技术条件,为矿山的建设和开采提供了参考依据。     

岩土工程地质灾害防治技术及防治方法

岩土工程地质灾害防治工作,关系到人们的财产损失、生命安全。探究岩土工程地质灾害防治技术及防治方法,具有重要的现实意义。本文以"赤水市元厚镇佛光岩景区危岩体"为例,主要围绕"岩土工程地质灾害防治技术"、"岩土工程地质灾害防治方法"这两个方面展开论述,希望进一步改善贵州省赤水市元厚镇佛光岩景区入口公路西南侧山坡危岩体地质灾害问题,以避免地质灾害带来的经济损失、人身伤害,更好地保护佛光岩景区,以及当地居民的安全。     

金厂峪金矿南部岩体稳定性工程地质研究

针对金厂峪金矿南部采空区周围岩体稳定性问题，采用岩体力学与实际工程问题一体化的研究方法，在矿山岩体工程地质研究方面，主要研究矿区内岩体工程岩组、结构面、工程结构体、水文地质、构造等地质因素的分布特征和工程结构体的稳定性及其相关因素的联系。本研究成果为金厂峪金矿南部采空区处理方案提供了工程地质依据，保证了矿山的安全生产。     

广西桂北硅化岩三元结构模型研究及其工程地质意义

广西桂北地区发育的硅化岩层具有极其坚硬、致密、隔水等特点,受其影响,硅化岩关联地层在不同程度上发生物理性质改变,而岩层物理性质改变对设计防护措施及施工方法可产生极大的影响,所以查明硅化岩及其关联地层工程地质特性对该地区工程建设具有重要意义。通过对硅化岩形成历史分析,对主要关联地层进行高密度电法对比,提出三元结构模型,论述了硅化岩及其关联地层的工程地质特性,为各类工程通过该区域提供了建议。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.