某金属矿地下开采地表沉降对建构筑物安全分析

为确保地表移动监测范围内建(构)筑物的安全,同时尽可能的采出其下部有用的矿产资源,结合某金属矿的开采实例,采用FLAC 3D三维数值模拟软件,对“三下”开采矿山移动监测范围内的地表沉降进行模拟,并将模拟结果与《有色金属采矿设计规范》中的安全要求进行对比分析。研究结果表明：矿山-150～-50m水平矿体开采并充填完毕后,地表最大倾斜值为0.02573mm/m、最大曲率为0.000214×10^-3/m、最大变形值为0.02550mm/m,满足建(构)筑物保护等级的要求;数值模拟得到的地表变形值与实际值基本吻合,说明采用FLAC 3D软件预测矿山开采对地表影响程度是可行的;由于充填法开采能有效减小采场附近围岩的应力与变形值,使得地表沉降大大减小,能够确保开采移动监测范围内建(构)筑物的安全,为类似“三下”开采矿山安全高效开采提供一定的借鉴价值。     

复杂开采条件矿体三强回采作业技术应用

本文针对金翅岭金矿矿体开采条件极其复杂的情况，在采矿方法试验中，率先在岩金矿山采用了三强作业技术，既保证了安全回采，又取是了较好的技术经济指标。     

黄金矿山深部高效开采技术及安全管理研究

本文将详细介绍黄金矿山深部开采现状,通过专业的研究与调查,精准找出高效开采技术在黄金矿山深部的开采过程,再明确高效开采技术的区域运用类型,其技术内容包括远程监控、地压管理、工作面降温与长臂开采等,并根据矿山开采可能形成的安全隐患,提出四项安全管理措施,既要增强高效开采技术的运用状态,还要提升黄金矿山深部的开采安全,促进矿山开采的可持续性。     

深入开展"超三赶一"促进企业降本增益

通过对南钢技经指标“超三赶一”活动的介绍分析、总结，强调要继续深入开展技经指标“超三赶一”活动，促进公司不断增益。     

锡矿山南矿"三下"采矿技术研究

介绍了锡矿山南矿30多年“三下”采矿所取得的成功经验和研究成果。这些经验和成果可为类似条件的矿山所借鉴。     

物探技术在探测矿山地质中的应用研究

随着现阶段矿山开采的机械化程度不断增加,对于地质开采勘探的需求也在不断的提高。物探技术的运用可以有效的为矿山地质的勘探提供新的方式和手段,进一步提高企业的经济效益。本文在简单介绍矿山地质勘查中开展物探工作进行分析,针对现阶段矿山地质勘探当中所使用的物探技术进行相应的讨论。     

河东砂石矿地质资源与矿山建设的经济性评价

河东砂石矿是为金川集团有限公司所属矿山提供井下胶结充填原料的辅助矿山，本文通过基建和开采资料，结合现场地质勘查，对矿床的地质资源储量、开采技术条件、矿山开发经济意义做了分析和评价，论证了随着集团公司的“做大做强”、矿山设计能力的翻番提升，砂石矿改扩建工程在经济方面的合理性。     

对我省地下冶金矿山采矿方法的几点综合意见

矿山采矿方法的研究,是矿山生产技术工作的重点。采矿方法是否选择恰当,设计是否合理,采场(矿房)管理是否认真,直接关系到矿山的生产能力与资源利用。所以,矿山开采的生产技术,应以采矿方法为中心,以机械化为内容,以强化开采为目的而进行一系列的工作。多年来,国内矿山提出强采、强出、强掘(即“三强”),以实现高效率、低矿损、保安全的强化开采,取得了许多经验与优良成绩.我们必需认真学习,为提高我省矿山生产技术水平而努力!我省地下矿山在为提高采矿强度,改进采矿方法方面作了许多工作,取得了不少成     

河台金矿三强作业技术的应用

在选矿处理量大大高于采矿量的情况下，为保证矿山正常生产，主要使用浅孔留矿采矿法开采的矿山，必须采用三强作业技术使其保持足够的存窿矿量。河台金矿应用实践证明其效果良好，效益显著。     

矿山地质测量工作的价值与重要性研究

通过开展矿山地质测量工作的价值与重要性研究得出,地质测量工作能够有效降低矿山开采安全风险、减小矿山开采估计导线误差、提高矿山工作面可采储量计算精度。在开采前进行地质测量工作具有为矿山企业安全管理提供参考、保证矿山井下作业安全的重要性。因此矿山企业应当提高测量工作质量,从而进一步提升矿山企业经济效益和社会效益。     

"Acquired" congenital diaphragmatic hernia

"Acquired" congenital diaphragmatic hernia (ACDH), has been defined as delayed or late appearance of a congenital diaphragmatic hernia after a documented time periol of postnatal life with no evidence of herniation. Three new cases are presented. This diagnosis has been characterized on the basis of a review of these cases and 14 additional patients from the literature. A classification based upon timing of herniation and state of pulmonary development is presented.     

从可研、设计阶段进行“三超”现象分析

主要针对基本建设项目出现的“三起”现象,从投资控制的两个主要阶段(决策阶段和设计阶段)进行影响因素分析,并就此相应采取措施。     

The repeated reproduction of Bartlett's Remembering.

There is a striking parallel between the treatment of F. C. Bartlett's theories of memory in the psychological literature and Bartlett's own characterization of reproductive memory as interest driven and constructive. Three periods of intensified interest in Bartlett's classic book Remembering (1932/1995) can be identified. The lst occurred in the wake of the publication of Remembering and focused on replication and extension of the empirical work. The 2nd was during the period of the "cognitive revolution" and treated Bartlett's key theoretical concept of "schema" within an information-processing framework. The 3rd is an ongoing revitalization of interest in the cultural and social aspects of Bartlett's multifaceted theory. Each wave of increased interest in Bartlett's work has brought different aspects of his thinking to the fore, producing different versions of his theory of remembering that reflect the theoretical climate of the time. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

燃烧辐射的研究与实践

炉内的辐射传热作用通常是由温度决定的，但因条件变化时辐射率与辐射特性便随其变化，故炉内辐射可人为地得到强化．在不提高供入热的情况下，介绍了强化辐射的三个途径。     

Sutureless "button and hole" splenopexy

A new technique for fixation of a mobile spleen is described. It offers the advantages of a minimally risky procedure that very effectively keeps a mobile spleen in its bed without foreign materials and is feasible even when the gastrosplenic ligament is absent and the splenic vessels are uncovered. Our "button and hole" sutureless splenopexy was performed in six patients from 1979 to 1995. Three had a gastric volvulus (GV) and an extremely mobile spleen; one of these also had a diaphragmatic eventration. Another three had torsion of the spleen; in one it occurred 9 months after repair of a diaphragmatic hernia. We achieved good results with splenopexy as the sole operation in two cases where a wandering spleen produced a GV.     

Color quenching in "environmentally friendly" cocktails

Fluorescent and colored compounds used in molecular biology labs may generate color quench in wipe test samples taken from such labs. The ability of conventional chemical quench curves to correct for color quench caused by fluorescent and colored compounds in "environmentally friendly" cocktails has not been reported. Series of colored samples spiked with 3H or 14C were generated for three fluorescent compounds: ethidium bromide; Hoechst 33342; and fluorescein, and three colored compounds: thiazol yellow G; tartrazine; and a mixture of bromphenol blue and xylene cyanol. Three different "environmentally friendly" cocktails were used: one with a linear alkylbenzene solvent; one with a diisopropylnapthalene solvent; and a third with a phenylxylylethane solvent. The data, generated from two different liquid scintillation spectrometers that use different quench indicating parameters, suggest that the quench from the fluorochromes and colored dyes with moderate amounts of quench can be corrected by chemical quench curves. The data also suggest that the quench curve of diisopropylnapthalene-based cocktails is significantly different from the other "environmentally friendly" cocktails, when examined using tSIE as the quench indicating parameter.     

The Lichtenstein open "tension-free" mesh repair of inguinal hernias

All standard methods of hernia repair involve suturing together tissues which are not normally in apposition. This violates the basic surgical principle that tissue must never be approximated under tension and thus accounts for an unacceptable number of failures. A total reinforcement of the inguinal floor with a sheet of suitable biomaterial and the employment of a "tension-free" technique is a more effective approach. Since June of 1984, 4,000 primary inguinal hernias have been repaired on an outpatient basis and under local anesthesia at the Lichtenstein Hernia Institute by the open "tension-free" technique using Marlex mesh. The patients were followed from one to 11 years (mean of 5 years) by physician examination. The follow-up rate was 87%. There were four recurrences. The causes of recurrence and how to avoid them are discussed herein. Three of the recurrences occurred at the public tubercle and were caused by placing the mesh in juxtaposition to the tubercle. This error has since been corrected by overlapping the mesh at the public bone. One recurrence was caused by disruption of the lower edge of the mesh from the shelving margin of Poupart's ligament. The error here was the utilization of a patch that was too narrow and therefore under tension. It became apparent that a wider patch, fixed in place with an appropriate degree of taxity, was required.     

"En-bloc" vertebrectomy in the mobile lumbar spine

BACKGROUND: Primary tumors of the vertebral bodies have previously been treated with total or subtotal excision in a piecemeal fashion (intralesional excision). Radiation therapy has been used to help control tumor growth. Recurrence rates with an intralesional, piecemeal removal of vertebral tumors have been unacceptably high. This study describes a method to excise a lumbar vertebra "en-bloc," and in the process, to perform a marginal (extralesional) resection of a primary tumor of the mobile lumbar spine that allows for a potential surgical cure. METHODS: A combined posterior-anterior procedure allows for an extralesional, marginal resection of the tumor and the involved vertebra. All posterior bony elements, including the pedicles and the adjacent intervertebral discs, are removed via a posterior approach. An anterior, retroperitoneal approach is then used to remove the vertebral body/tumor as a single specimen. The nerve roots at the involved levels are spared and the spine is instrumented and fused both posteriorly and anteriorly. RESULTS: Three patients successfully had combined posterior-anterior resections of lumbar vertebral chordomas. No permanent neurological complications occurred. Overall morbidity of the procedure was acceptable. At 31-month follow-up, no tumor recurrence has been detected. CONCLUSIONS: "En-bloc" resection of a primary vertebral tumor of the lumbar spine is technically demanding, but potentially curative. The alternative approaches-intralesional excision, radiation therapy, or a combination-are unable to cure these tumors. Long-term, 10-year follow-up will be necessary to confirm whether this en-bloc approach provides a surgical cure.     

Diabetic nephropathy, hypothyroidism and colfibrate-induced myopathy (author's transl)

A case of a pluriglandular-insufficiency syndrome (Diabetes mellitus and primary hypothyroidism) is described. The history and symptomatology of the patient is presented and prevously published references are briefly discussed. The case reported was complicated by renal insufficiency and by a "muscle-syndrome" after clofibrate therapy for hyperlipidemia--two complications, which were possibly intensified by the hypothyroid state of the patient.     

"Chance" scores on the Strong Vocational Interest Blank for men.

Strong's estimated chance score ranges on the SVIB scales are compared with the chance variance for most of the scales, computed from the assumption of zero item intercorrelations (obtained when the blank is filled out in all possible ways). "Most of the differences are small, and the positive and negative errors of estimate are about equally divided. The greatest difference is in the Aviator scale, where Strong's estimate is about 1.4 standard score points too high. This difference is significant at the 1% level as judged by the F test. Three others (Engineer, Chemist, and Y. Secretary) are significant at the 5% level." (PsycINFO Database Record (c) 2010 APA, all rights reserved)