内蒙古阿巴嘎旗朝克温多尔地区多金属矿地球物理特征及成因潜力分析

文章通过对内蒙古阿巴嘎旗朝克温多尔地区地质特征进行简单分析的同时,结合地球物理特征进行系统研究分析,通过对研究区进行地球物理特征分析,认为找矿前进良好,对多金属矿成因潜力进行分析。     

内蒙古阿巴嘎旗西部地区地球化学特征分析

内蒙古自治区阿巴嘎旗地区地域辽阔,资源丰富。矿产资源种类多,已探明的有铁、钨、煤、莹石等,储量较大,开发前景十分广阔。地球化学勘查在地质找矿中占据着不可或缺的重要位置,本文主要阐述了运用土壤地球化学测量方法对阿巴嘎旗西部地区地球化学特征进行分析评价,为后续矿产地质勘查提供些许建议。     

减少铸件中氢含量的系统和方法

<正>欧洲专利US201514658664本发明涉及的方法包括:先将贫氢熔融铝合金液倒入坩埚中然后盖上盖,接着向坩埚中通入一定量的压缩干燥气体,以便在贫氢熔融合金液的表面上形成一干燥气体层。本发明方法还包括:将另外一定量的压缩干燥气体通入到装配好的铸型中以便清洗铸型,然后将贫氢熔融合金液经由坩埚盖的开孔浇入至装配好的铸型型腔中。本专利方法主要是通过控制坩     

魔芋片对流干燥水分变化规律研究

[目的]探讨魔芋片对流干燥过程中水分变化规律及温度、干燥介质流量对其影响情况.[方法]在不同对流干燥温度下研究魔芋片的水分变化规律,并分析干燥介质流量对魔芋片水分变化的影响.[结果]魔芋片干燥具有明显的恒速期和降速期.在试验温度范围内,干燥介质温度越高、风量越大.魔芋片脱水越快、干燥时间越短.建立了魔芋片在不同温度和通风量下的对流干燥曲线拟含方程:y=ax<'2>+bx+c,其中,y为魔芋片干基含水量(g/g),x为干燥时间(min),c为魔芋片初含水量(g/g).[结论]为科学合理地设计魔芋片干燥工艺提供了参考.     

内蒙古多金属矿地质矿产特征及找矿方向研究

本文通过分析内蒙古多金属矿地质矿产特征,进行找矿方向的研究,并详细论述了内蒙古阿巴嘎旗北部巴彦德勒-格勒敖包地区成矿地质条件和控矿因素,并提出该地区进一步找矿方向。     

内蒙阿巴嘎旗某萤石矿浮选提纯工艺研究

研究了内蒙阿巴嘎旗某萤石矿生产优质低硅萤石精矿的浮选药剂和工艺流程。通过采用一次粗选、一次扫选、粗精矿再磨后五次精选,弱酸性介质精选的浮选工艺,获得含CaF297.52%,SiO21.06%,回收率为85.19%的萤石精矿。     

金隆蒸汽干燥生产运行实践

详细分析了金隆公司蒸汽干燥系统在生产过程中所发生故障的原因和采取的措施,同时通过对蒸汽干燥与气流干燥系统进行对比,阐述了蒸汽干燥系统的优缺点,为铜精矿干燥设备的选择、设计、使用提供重要参考。     

预干燥脱硫系统烟气酸性冷凝水的处理

以预干燥脱硫系统烟气酸性冷凝水为研究对象,研究治理烟气酸性冷凝水的工艺技术。介绍预干燥脱硫系统烟气酸性冷凝水处理改造情况,阐述了设施配备和工艺流程。对烟气酸性冷凝水处理改造情况进行了梳理。分析了烟气酸性冷凝水对现有工艺设备造成的影响,并提出了改进建议。     

桨叶干燥系统的设计和应用

介绍了桨叶干燥系统的工作原理和工艺流程,提出设计过程中应该考虑热平衡计算、换热面积计算、桨叶干燥机选型、配套系统选型、除尘系统选型设计等问题,列举了桨叶干燥机在污泥干化、聚乙烯醇干燥和间苯二甲醇干燥等领域的应用。     

综合物化探法在内蒙阿旗巴润金矿区寻找隐伏矿床的应用

在内蒙古阿巴嘎旗巴润苏德日图金矿区开展了以地电化学方法为主、吸附相态汞为辅的多种新方法测量找矿研究工作。通过对已知金矿进行找矿可行性实验研究,各种新方法均测出了清晰的异常,并计算金矿体中 Au 元素的地电提取系数。在此基础上,确定综合异常,圈定出有效的找矿靶区,为该区的找矿预测指明了方向,实现在研究区寻找隐伏金矿的突破。     

Measurement of distributions of small-scale energy depositions from low-linear energy transfer particles using the superheated drop detector

We have developed a new detection method for measuring distributions of energy depositions from particles characterized by low linear energy transfers (LETs). In particular, we have developed a detection system to measure energy depositions produced by electrons and photons on nanometer scales. The detector is based upon the operational principles of the superheated drop detector (SDD). SDDs consist of tiny droplets of superheated liquid suspended within a gel-like emulsion. The SDDs in this study are fabricated using Freon-115 and a glycerol-based gel as the superheated liquid and host medium. This SDD configuration is operated as a threshold temperature-dependent detector for measuring nanoscopic distributions of energy depositions from low-LET particles. Measured results are compared to the calculated distributions of energy depositions along an electron track. A new electron track code, ESLOW3.1, is used to perform the computational study. Measurements show good agreement with computational results in the energy deposition range of 40-200 eV.     

C/C复合材料在CD15W-40机油润滑状态下的摩擦性能

以炭纤维无维布与网胎叠层针刺而成的整体毡为预制体,采用化学气相渗透法制备C/C复合材料,利用MM-1000型惯性试验台研究该材料在干态和CD 15W-40柴油机油润滑状态下的室温摩擦磨损性能,并采用扫描电镜(SEM)、偏光显微镜以及三维显微镜观察分析该材料的结构形貌、摩擦表面形貌和磨屑形貌.结果表明:C/C复合材料在干...     

Perilipin: unique proteins associated with intracellular neutral lipid droplets in adipocytes and steroidogenic cells

For several reasons it seems reasonable to suspect that perilipins participate in lipid hydrolysis. First, they are located at the lipid droplet surface, the presumed site of HSL and cholesteryl esterase action. Secondly, they are polyphosphorylated by PKA in concert with lipid hydrolysis. Finally, these proteins appear to be expressed primarily, if not solely, in adipocytes and steroidogenic cells, cells in which lipid hydrolysis is stimulated by cyclic AMP and mediated by HSL or cholesteryl esterase(s), whereas other cells that contain abundant neutral lipid depositions contain no perilipin [13]. Interestingly, these closely related hydrolases share no homology with other mammalian lipases [3]. Although such attributes provide a link between perilipin and lipid hydrolysis, we have no evidence that perilipins participate directly in, or are necessary for, lipid catabolism. The basis for the strong affinity between the perilipins and neutral lipids is unknown. Clearly, lipids and perilipins are tightly linked, as evidenced by selective targeting of epitope-tagged perilipin to lipid droplets and by the paradoxical appearance of lipid droplets in pre-adipocytes transfected with a sense perilipin A construct. Indeed, in differentiating adipocytes the earliest lipid depositions are associated with perilipins, and restriction of perilipin synthesis with anti-sense constructs may impede lipid formation and deposition. It remains to be determined if, in the normal course of events, perilipins are directed toward lipid depositions or if lipids are transported to perilipin foci. Whatever the temporal sequence, the result is that neutral lipids are encased in perilipin-bounded droplets.(ABSTRACT TRUNCATED AT 250 WORDS)     

青海同德小曲如沟—加日亥一带地质地球化学特征及钨矿找矿潜力分析

研究区大地构造位置处于东昆仑与西秦岭衔接部位,经历了复杂的构造演化过程,出露地层主要为中—下三叠统隆务河群,中酸性岩浆岩发育,成矿地质条件优越,已发现显龙沟锑金矿、加吾金矿等矿床,但区内以前未发现有钨矿化。以1/5万水系沉积物测量原始数据为依据,对研究区内地质、地球化学特征及成矿条件进行分析,结合实际找矿工作,认为区内W、Au、Ag、As、Sb元素富集程度较高,在钨矿找矿方面具有很大潜力,指出有利找矿地段为隆务河群第二岩性段内钨异常分布区,赋矿岩性为中薄层砂岩及板岩段内厚大的中薄层砂岩夹层,矿化类型以蚀变岩型及石英脉型为主。     

甘肃北金山金矿地质特征及成矿远景浅析

北金山金矿区出露地层主要有下古生界碧口群和古生界中泥盆统三河口组,其中,中泥盆统三河口组是主要的赋矿地层,与金矿关系密切。矿区断裂发育,主要有NEE、NWW和NE向3组,其中NEE向断裂控制了金矿体的产出,为主要的控矿构造。矿区岩浆活动较弱,仅见岩脉零星出露。矿区内1∶5万金、银、铜、铅、锌、砷和锑异常发育。矿区围岩蚀变主要有硅化、绢云母化和黄铁矿化,与金矿化关系密切。通过对北金山金矿地质特征和控矿因素进行系统分析,认为北金山金矿区成矿地质条件有利,具有一定的找矿前景。     

广东那程银金矿床地质特征

那程银金多金属矿床位于广东省阳春地区。通过采用路线地质调查、构造填图、矿床（点）考察和岩石地球化学等方法,详细总结了矿区地质特征。震旦系云开群和寒武系八村群是区内主要含矿地层,但震旦系Ag元素丰度值明显偏高,因此震旦系形成的矿床规模比寒武系大;矿区整体为一背斜构造,北翼具有低温元素组合特点,南翼具有中温元素组合特点,反映出褶皱的南翼处于抬升,而褶皱的北翼处于下降,因此,北翼矿体的埋藏深度大于南翼;矿区燕山期侵入岩出露处一般都有较好的矿化,加里东期白云母-绢云母不等粒变质砂岩质条带状混合岩出露处矿化较好,而碎裂-糜棱岩化似斑状黑云母钾长石花岗岩出露处矿化一般。     

Two-dimensional electrophoretic analysis of humoral responses to culture filtrate of Mycobacterium bovis BCG in patients with leprosy and tuberculosis

Various aspects of our communication are well known to have changed over time (1-3). This article describes a cross-sectional study that examined the acoustic characteristics of two groups of Australian women aged 18-25 years from recordings made in 1945 and 1993 and investigated the possible changes in the voice across generations. Archival recordings from 1945 which had been used in a longitudinal study (4) were compared to recordings made in 1993. The results of this study show that women in 1993 have significantly deeper voices than women of the same age recorded in 1945. The possible factors influencing this change are discussed.     

Pore Formation During Solidification of Aluminum: Reconciliation of Experimental Observations,Modeling Assumptions,and Classical Nucleation Theory

An in-depth discussion of pore formation is presented in this paper by first reinterpreting in situ observations reported in the literature as well as assumptions commonly made to model pore formation in aluminum castings. The physics of pore formation is reviewed through theoretical fracture pressure calculations based on classical nucleation theory for homogeneous and heterogeneous nucleation, with and without dissolved gas, i.e., hydrogen. Based on the fracture pressure for aluminum, critical pore size and the corresponding probability of vacancies clustering to form that size have been calculated using thermodynamic data reported in the literature. Calculations show that it is impossible for a pore to nucleate either homogeneously or heterogeneously in aluminum, even with dissolved hydrogen. The formation of pores in aluminum castings can only be explained by inflation of entrained surface oxide films (bifilms) under reduced pressure and/or with dissolved gas, which involves only growth, avoiding any nucleation problem. This mechanism is consistent with the reinterpretations of in situ observations as well as the assumptions made in the literature to model pore formation.     

沂沭断裂与鲁东金矿床的成生关系

沂沭断裂在山东地质演化史中发挥了重要作用,它由四条主干断裂组成,每条断裂具有自己的形成演化过程和变形特征。表现在自西向东形成活动时间由老（前古生代）变新（ 中－新生代）;力学性质由扭－压扭－走滑;伴生（NNE向）与派生（NW向）断裂由密到疏相间展布,显示倒N字型构造型地工,控制着鲁东金矿床类型及特征。基底滑脱层为地壳高导层（深17km）,其中的热液体沿低级序断裂上升,对古老的重熔花岩质岩石进行广泛的碱交代作用,在不同的构造部位及层次上被改造为具有不同结构与构造的花岗岩。碱交代作用的排硅、提取矿质的 过程,促使热液具有了成矿能力,并随断裂构造的时空特征而变化。     

Microstructural Studies of L10-FePt Thin Films with High Coercivity Fabricated at Low Deposition Temperatures

The infuence of ultrathin nonmagnetic Ag layers on the formation of the ordered fct-L10 PtFe phase and their magnetic properties have been studied, when the thin FePt .lms were deposited on MgO (100) single-crystal substrates. Epitaxial growth of the FePt (001) .lms was observed at the deposition temperature of 400 °C. With ultrathin Ag intermediate layers deposited between FePt layers, the surface morphology changed from the interconnection network to isolated-island character. The perpendicular coercivity of the FePt .lm dramatically increased from 6.5 to 32.5 kOe. The formation mechanism of the isolated island morphology of FePt thin .lms is discussed. This article is based on a presentation made in the symposium entitled “Phase Transformations in Magnetic Materials,” which occurred during the TMS Annual Meeting, March 12–16, 2006, in San Antonio, Texas, under the auspices of the Joint TMS-MPMD and ASMI-MSCTS Phase Transformations Committee