甘肃成县小沟里金矿床矿体分布规律及深部找矿效果

小沟里金矿区出露的红岭山组上岩段与中岩段呈整合接触，二者间形成了挤压构造破碎带，该破碎带为主要控矿构造，也为矿(化)体的主要赋矿层位。根据矿体成群、成带的分布特点，依次可将矿区分为北、中、南3个矿带。1-3号矿体位于北矿带，20-1号与22号矿体位于中矿带。3条矿体在走向与倾向上尚未尖灭封闭，因此认为其在走向及深部具有良好的找矿潜力，根据矿体赋存特征，圈定3处找矿靶区。通过工程验证，3处找矿靶区均探获矿(化)体，表明小沟里金矿区深部具有良好的找矿前景。     

甘肃两当寺合金矿床地质特征及控矿因素浅析

西秦岭太阳寺—庞家河多金属成矿带,先后发现了西安河金矿、湘潭子金银矿、庞家河金矿和柳梢沟金银铅矿等大—中型矿床,而寺合金矿与柳梢沟金银铅矿毗邻。寺合金矿位于东峪—太阳寺断裂北侧的震旦—奥陶系丹凤群中,区内近EW-NEE向次级断裂较为发育,岩浆岩活动明显,矿化蚀变限定在构造变形带内,范围基本与矿体范围相一致,与成矿关系最为密切的蚀变有硅化、黄铁矿化和方铅矿化。该区矿体较薄,多赋存于次级断裂中。本次研究以寺合金矿为切入点,分析了寺合金矿乃至太阳寺一带的控矿因素,认为该区具有“三位一体”的控矿特点,并指出该区下一步找矿方向。     

甘肃玉门车路沟大阪金矿地质特征及找矿方向

甘肃省玉门市车路沟大坂金矿位于昌马-九个泉加里东期铜(锌)、金成矿带上,与昌马金矿处于同一成矿带上,与其有相似的成矿地质条件。在车路沟大阪金矿开展了1:5万水系沉积物测量工作,在圈定的综合异常区通过1:1万岩屑测量和1:1万地质草测进行查证,圈定出金矿体19条,矿体均赋存于英安斑岩之中,属石英脉型。本文通过研究分析玉门车路沟大阪金矿的矿体特征、矿床成因及找矿标志,总结了该区的找矿方向。     

甘肃肃北县斜沟铜(钼)矿地质特征及找矿方向探讨

甘肃省肃北县斜沟铜(钼)矿位于马庄山-狼娃山-黑鹰山铁、金、钨和锡成矿带上,与狼娃山铁矿有相似的成矿地质条件。在斜沟铜(钼)矿开展了1:5万水系沉积物测量工作,圈定出以Cu、Mo、Ag为主的综合异常,对该异常通过大比例尺地质测量和1:1万物化探测量及槽探、钻探等探矿工程进行查证,初步圈定出铜、钼、铜钼矿体共25条,该铜(钼)矿属于热液型。本文通过研究分析斜沟铜(钼)矿的矿体特征、矿床成因,总结了该区的找矿标志。     

吕东沟钒矿地质特征及成矿规律浅析

陕西南秦岭造山黑色岩系可划分为南、中、北3个带,中带黑色岩系位于中村—湘河一带下寒武统水沟口组[1],是主要的沉积型钒矿成矿层。本文通过研究区域地质特征、矿体特征、矿石特征,分析总结了吕东沟钒矿的找矿标志、成矿规律及成因,为进一步在吕东沟地区进行钒矿找矿工作提供依据。     

湘东北地区合水金矿地质特征及找矿前景分析

合水金矿位于钦杭成矿带湖南段湘东北地区醴陵金矿田内,属于湖南省“金腰带”的核心部位。通过前期的普查工作,大致查明了矿区基本地质情况。矿区矿床类型为破碎蚀变岩型和石英脉型。发现多条金矿(化)脉体,找矿潜力较大。本次运用地质综合研究的方法,总结该区的金矿体地质特征及找矿标志,研究分析了该区的金矿找矿前景。     

甘肃嘉峪关黑山湖一带金矿地质特征初步研究

甘肃嘉峪关黑山湖一带金矿点分布密集,品位较高。该区金矿赋存于奥陶系浅变质岩中,矿体受断裂控制,矿化类型有蚀变岩型和石英脉型。金矿化蚀变带规模较大,金矿体呈脉状和透镜状,多数为盲矿体;矿化蚀变带如同河流,矿体呈“鱼群”状。通过对该区金矿成矿地质特征、找矿标志和控矿因素等方面的总结,探索该区金矿找矿前景,提出勘查开发工作建议,旨在引导相关部门和科研机构对该区金矿的关注,推进该区金矿的找矿勘查与开发。     

东源县鹿坑铁矿地质特征及找矿潜力浅析

东源县鹿坑铁矿位于广东河源,属矽卡岩型磁铁矿床,矿体赋存于三迭系大理岩及灰岩与燕山三期花岗岩的接触带中,矿体呈透镜体状和囊状产于接触带的矽卡岩体中。从构造特征和矿(化)体资料分析,该区的找矿前景良好,具有一定的找矿潜力。     

陕西省太白县东沟金-多金属矿地质特征及找矿前景分析

陕西省太白县东沟金-多金属矿区位于凤太矿田东南部,双王大型金矿床之南东约6 km处,是金铅锌多金属矿矿区。经地质勘查已发现PbZn、Cu、Au矿(化)体共5条,其中Ⅱ号金矿体、Ⅲ号铅锌矿(化)体、Ⅴ号铜铅锌矿(化蚀变)体初具规模。本文总结了东沟金-多金属矿地质特征、控矿因素,分析了该区的找矿前景,认为该区成矿地质条件有利,找矿潜力较大,找矿前景好。     

栾川县上房沟钼铁矿地质特征、矿化富集规律及找矿方向研究

上房沟钼(铁)矿是以钼为主,伴生有铁、硫、钨、铼等多种有用组分的多金属矿床。矿床产出受上房沟花岗斑岩体内、外接触带控制,矿体由分布于岩体内、外接触带的花岗斑岩、角岩、矽卡岩及蚀变白云石大理岩、变辉长岩等矿热液交代矿化蚀变岩所构成,属于与花岗斑岩有关的热液钼矿成因类型。本文通过对上房沟钼铁矿床成矿地质背景、矿产地质特征进行研究,总结矿化深部富集规律,指出了该区找矿方向,为勘查工作的布置提供了科学的地质依据。     

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.