江西金山金矿田门前山金矿地质特征及找矿方向

门前山金矿床位于江西省金山超大型金矿田北西缘,是矿田内继金山、西蒋、石坞、朱林西等后发现的又一处具有影响的金矿床,找矿成果丰富了金山金矿田深边部找矿理论.矿区内金矿找矿,证实了矿田内金山-朱林、西蒋-石碑等主要剪切带及金矿体倾向上的深部延伸,剪切带的构造岩分带、蚀变分带明显,具有典型的＂超糜棱岩、糜棱岩带-石英、黄铁矿、铁白石化带-金矿化（体）带＂等构造岩-蚀变-金矿化三位一体的成矿特征.矿床成因为受韧性剪切带控制的变质热液型金矿床,具有＂火山沉积-区域变质-动力变质-韧性剪切带控矿容矿-改造叠加＂的综合成矿模式.文章论述了门前山金矿床的成矿地质背景、矿石类型及组构、矿体特征、围岩蚀变特征及控矿韧性剪切带等地质特征,进而提出了进一步找矿的方向.     

河南西峡县高庄金矿床地质地球化学特征

高庄金矿是一个脆-韧性剪切带型中温热液金矿床,矿化蚀变以强石英-绢云母化为特征,剪切带的控矿作用表现为:剪切带控制石英脉带(群);剪切带内的一系列张裂隙控制含金石英脉;变形作用最强烈的碎裂地段控制工业矿体的三级构造控矿体系。含金石英脉在剪切带中呈“百叶窗”式的空间分布。成矿作用分为表生成矿期及内生成矿期,内生成矿期又可分为少硫化物石英脉阶段、磁黄铁矿-金-石英脉阶段、金-黄铁矿-石英脉阶段和石英-碳酸盐岩4个成矿阶段,其中第2、3两个阶段为主要成矿阶段。表生期的局部差异条带状风化,是由于磁黄铁矿与黄铁矿的抗氧化强度不同造成的。     

西秦岭李子园地区金矿床叠加成矿作用研究

在对李子园地区碎石子、沈家沟、宽沟、尖草湾矿床野外地质特征进行了详细研究的基础上,结合室内岩矿鉴定、成岩成矿年代学、成矿流体、稳定同位素研究,查明研究区存在两期重要的成矿作用,早期形成与韧性剪切作用有关的金矿床,晚期形成与闪长玢岩有关的斑岩型-蚀变岩型金矿床。两期成矿作用在不同空间位置存在不同程度的叠加成矿作用,强烈的叠加成矿不仅改变了矿石结构,矿体方向,同时使矿石品位大幅度提高。斑岩岩株所在的北西向韧性剪切带、北东向次级构造带是找矿的重点区域。研究成果不仅为区域增添了新的矿床类型,为区域成矿规律研究提供了新的资料,同时指明了本区找矿方向,实现了找矿的突破。     

江西德兴朱林西—竹叶岭金矿床地质特征及其成矿作用与成矿模式

朱林西—竹叶岭金矿床位于金山金矿田西部,是与韧性剪切带有关的金矿床。矿体主要产于中元古界双桥山群的金山—朱林韧性剪切带和西蒋—石碑韧性剪切带内,矿体类型主要为蚀变糜棱岩型,成矿阶段可分为黄铁矿-石英阶段、硫化物-石英-铁镁碳酸盐阶段和黄铁矿-钙镁碳酸盐阶段。综合研究表明,金矿成矿主要受地层-构造-岩浆岩三者的耦合因素控制,韧性剪切作用是金活化迁出的主要原因,进而提出了"沉积—变形—变质(活化)—迁移—混合—蚀变—矿化"成矿模式。     

甘肃天水宽沟金矿床构造叠加晕研究及盲矿预测

宽沟金矿位于北秦岭褶皱带西南缘,矿床严格受构造控矿,雨子沟次级断裂是本区的主要控矿构造。区内侵入岩体十分发育,石英正长岩脉与金矿化关系密切。基于热液型金矿床的成矿理论,采用构造叠加晕新技术,在该区开展深部盲矿找矿工作,建立了矿床构造叠加晕模式。矿区构造叠加晕分析结果显示,成矿具有多期、多阶段叠加的特征。通过研究该区原生晕轴向分带特征,识别出不同成矿阶段所形成的矿体（晕）在空间上的叠加结构,确定了盲矿预测标志,提出了盲矿靶位,初步验证己取得了很好的找矿效果。     

内蒙古常福龙剪切带型金矿床形成的构造控制

内蒙古常福龙金矿床位于华北地台北缘中段区域EW向韧性断裂的次级NWW剪切带系统内。金成矿发生在燕山晚期,处于区域构造体制挤压-伸展-挤压的转换期以及2期近南北向大规模构造推覆作用的间歇期,张性构造环境为剪切带流体汇聚与成矿作用创造了条件。剪切带构造控矿主要表现为主断裂构造透镜体控矿、主断裂局部张性部位控矿和次级张性断裂-裂隙控矿3种基本型式,构造-流体共同作用分别形成了蚀变岩型、角砾岩型和石英脉型矿化(体),形成了常福龙剪切带型金矿床构造-蚀变网络基本格局。可以考虑利用构造-蚀变网络结构上的自相似性,指导矿山深边部找矿勘查以及剪切带系统内新矿体的预测。     

青海省大柴旦红灯沟金矿区成矿条件与成矿模式研究

重点研究了南祁连岛弧带红灯沟矿床的形成背景、构造演化,以及金矿化与剪切带的关系.红灯沟矿区位于汇聚板块边缘最重要的金矿成矿带上.根据野外调查,掌握了剪切带的性质,圈出了矿化异常范围.据调查,红灯沟矿床有多期的成矿作用,剪切蚀变带具有明显的分带现象,矿化主要发生在韧性剪切带中,构造变形越强,矿化越好.这就构成复杂的矿化类型叠加组合型式,这也正是形成大型特大型金矿床的重要条件.成矿物质为深部来源,可能与隐伏酸性岩体的成矿作用有关.后期的张性填充石英脉是重要的成矿构造.根据矿床的成因,建立了矿区成矿模式图,指出了矿区有利的找矿部位.     

胶东地区谢家沟金矿床地质特征及找矿标志

谢家沟金矿床受控于招远—平度断裂带之次级北北东向韧性剪切带,区域金矿床资源丰富,找矿潜力较大。研究表明:谢家沟金矿床严格受控于北北东向韧性剪切带,属于同韧性剪切带蚀变岩型矿化类型;初步圈定金矿化脉8条,地表控制长度可达1km,矿石品位较高,找矿潜力巨大;谢家沟金矿床受韧性剪切带和岩浆岩的共同作用较为明显,尤其是尤其闪长玢岩脉对金矿化的叠加作用极为明显,矿石中黄铁矿和黄铜矿等硫化物含量明显增加。     

陕西省柞水县南沟金矿床地质特征及找矿前景分析

冷水沟—南沟矿区位于南秦岭印支期褶皱带东段。区内发育有冷水沟斑岩型铜矿床和南沟构造热液脉型金矿床。本文通过对南沟金矿区的成矿地质特征进行总结,发现区内金矿体主要赋存在斑岩体外围的基底构造层及与岩体的外接触带中。矿床成因属岩浆热液蚀变型、韧性剪切带型金矿床,结合冷水沟斑岩型铜矿成矿特征构成斑岩型矿床的成矿系列。综合分析认为本区具有良好的找矿前景,在柞水—山阳矿集区有望形成大型铜金矿床的突破。     

滩间山金矿田韧性剪切带和金

摘要：经大量野外调查和室内显微构造研究,本区金矿的形成富集与韧性剪切带密切相关,不同方向区域韧性剪切带镶嵌部位是找矿靶区,同生断裂与不同方向控矿韧性剪切带叠加部位和闪长玢岩及煌斑岩脉经韧脆性剪切改造之处是金的成矿有利地段,波浪状控矿韧性剪切带张扭性扩容空间是金矿体赋存的有利场所。     

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.