老柞山金矿西矿带采矿方法试验研究

老柞山金矿西矿带由于开采技术条件复杂，应用单一的浅孔留矿采矿法已不能适应矿山生产。为解决西矿采矿方法问题，矿山针对西矿带２５５ｍ中段薄－极薄矿脉进行了削壁充填采矿方法试验研究，取得了理想的技术经济效果。     

地下钨矿山直流牵引电机车交流变频技术应用研究

目前钨矿山使用的架线电机车绝大部分是电阻调速电机车，普遍存在故障率高、维修量大、维修成本高、电能浪费大等缺点．针对这种情况进行了直流牵引电机车交流变频技术应用研究，在地下矿山现有的架线条件下，对现有的电阻调速机车进行改造，形成样机，投入矿山进行适应性试验研究．     

蒙库铁矿空气间隔爆破技术试验

简述了空气间隔爆破技术的原理 ,蒙库矿山爆破生产中进行的试验 ,表明该技术可以降低矿山爆破成本。     

三维数字化技术在矿山基建和生产中的应用

三维数字化技术是建设数字矿山的核心技术，随着计算机与现代采矿技术的发展，该技术已应用于矿山基建和生产的方方面面，从矿山的人工开采到大型机械装备，从数字化地形图的绘制到矿山数字模拟，从利用数据库管理矿山资源到“智能矿山”等等。介绍了三维数字化技术的内涵，三维地质模型数据库的信息采集、建模和赋值过程，以及三维数字化技术在井巷工程优化、矿山生产组织、矿山安全管理和矿山巡查中的具体应用情况。三维数字化技术的应用，提升了资源开发安全管理水平，加速了矿产资源的开发，节约了采矿成本，提高了采矿效率，稳定了选矿指标，降低了选矿成本。     

西北矿冶研究院 矿山研究所

西北矿冶研究院矿山研究所主要从事采矿学科的采矿工艺、方法的试验研究，井下地压规律和支护方式研究，中小型矿山的设计、计算机CAD设计及相关专业的技术服务及咨询工作。该所组建35年来，在采矿方法、回采工艺技术、充填技术、爆破技术、地压与支护方式研究等方面进行了大量系统的研究工作并取得了显著成绩。     

绿色勘查技术在多金属矿地质勘查中的运用

在多金属矿产勘查中，应用绿色勘查技术可以合理确定勘查工作方案，使周围环境得到最大的效益，遵循矿山地质规律，综合运用现代技术，建立了勘查工作控制机制。通过对同类矿山地质勘查目标的确定、采集资料、现场调查及现场试验，探索一条新的勘查途径。试验结果表明：与常规的勘查方法相比，这种新的方法可以提高勘查深度、获取更多的信息，使整个勘查工作的效率得到提高。本文对绿色勘查技术及其在多金属矿地质勘查中的具体运用进行了论述，以供参考。     

岩体主结构面控制爆破技术在矿山的应用试验

首钢建材化工厂应用岩体主结构面控制爆破技术在矿山进行了试验。试验结果表明：延米爆破量提高了５４．５％；炸药单耗降低了２２．１％，并优化了主要孔网参数，取得了显著的经济效益。     

城门山铜矿石堆浸试验及生产应用设想

城门山铜矿是一个尚在开发初期的大型铜硫矿山，根据小露采剥离矿石溶浸试验情况，介绍了生产中应用堆浸技术的设想。     

基于人工智能技术的绿色矿山智能化建设发展策略研究

自《关于加快建设绿色矿山的实施意见》（国土资规[2017]4号）推行以来，各地致力于打造绿色矿山稳健发展新格局，同时探索发展新途径，数字技术成为了革新绿色矿山建设发展形式的一大动力。人工智能技术属于先进数字技术之一，如何在该技术赋能的条件下落实绿色矿山建设目标，成为了各地要探究的问题。文章针对人工智能技术在矿山智能化建设中的应用价值、绿色矿山智能化管理要求以及人工智能技术在绿色矿山智能化建设中的发展策略加以分析，以期为新时代矿山可持续建设与稳健发展提供参考。     

利用牙轮钻超深孔矿碴取样作为生产勘探补充手段的研究与实践

南芬铁矿经过近五十年的大型机械化开采，现已由山坡露天采矿逐渐转入凹陷露天采矿。由于受时间和空问的制约，矿山传统的槽探勘探手段已明显地适应不了矿山生产发展的需求。因此，寻求一种新的经济可行的生产地质勘探手段将是矿山生产的当务之急。针对这一实际清况，南芬铁矿地测部门先后做了多方面的探索和实践，但均收效甚微。本次试验主要结合2001～2002年的生产勘探槽探部分工程，特此开展了“利用牙轮钻超深孔矿碴取样作为生产勘探补充手段”的试验研究，实践证明，此方法经济合理，技术可行。生产适用，很值得在日后的矿山生产中进一步推广应用。     

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.