鄂尔多斯盆地志丹、安塞地区长6 低阻油层成因机理及识别方法

陕北中生界延长组地层中低阻油层较发育,其分布广泛,资源潜力巨大。由于其成因机理复杂,表现 形式多样,传统的方法难以识别,因此,结合油田生产实践,以录井、测井、实验分析及试油试采等资料为 依据,并以主力产油层组为研究对象,在综合地质研究的基础上,对志丹、安塞地区长6 低阻油层的成因 机理进行了研究,并探讨了对其进行识别评价的方法。研究结果表明：孔隙结构复杂、黏土附加导电能力 以及高地层水矿化度是研究区长6 低阻油层主要的成因机理;采用交会图法、测井曲线重叠法及邻近水 层对比法可以提高对低阻油层的识别准确度。     

应用超声三血管气管切面诊断胎儿主动脉弓异常

目的　研究超声三血管气管切面对于胎儿主动脉弓异常的诊断价值。方法　回顾性分析2010年5月至2014年5月北京协和医院诊断的17例胎儿主动脉弓异常的产前超声图像资料，并与产后超声及病理结果进行对照，分析不同类型主动脉弓异常的产前超声特征，重点关注三血管气管切面的表现。结果　17例主动脉弓异常在三血管气管切面均有阳性表现。其中主动脉弓缩窄3例，表现为主动脉弓细小；主动脉弓离断7例，表现为主动脉变细，不能连接至降主动脉；右位主动脉弓合并迷走左锁骨下动脉5例，可见环绕气管的“U”形血管环；右位主动脉弓合并镜像分支2例，可见主动脉弓位于气管右侧，动脉导管不汇入降主动脉。结论　三血管气管切面是提示胎儿主动脉弓异常敏感且有效的切面，中孕超声筛查时应重视该切面，早期发现异常并给予适当的遗传咨询。     

区域化探异常评价新方法

分析了现有区域化探异常评价方法存在的问题，提出了评价化探异常的新方法（元素成矿有利度法、异常成矿有利度法、异常成矿远景有利度法）并对方法原理进行了介绍。经实际应用，该方法收到了较好的找矿效果。     

浅谈辽宁东北地区北西向断裂构造

主要介绍了辽宁东北地区北西向断裂构造存在的依据;对推断断裂的粗浅分析;以及北西向断裂与矿产的关系。     

缺氧YBCO多晶陶瓷的磁电耦合与磁电阻效应

将高温超导陶瓷YBa2Cu3O6+x经过真空热处理得到氧含量x=0.13的缺氧陶瓷样品,利用HP4294A精密阻抗分析仪测量了样品介电常数温谱图,在温度为410K附近发现了介电异常现象,认为是由反铁磁相变感应铁电相变引起的.铁电测量表明缺氧YBCO多晶陶瓷在室温下有一定的铁电性.在零磁场和外加磁场条件下,采用标准四引线法分别测量了样品电阻率随温度的变化关系,发现温度低于400K时样品的磁电阻MR约为60%且基本不随温度变化,在反铁磁相变温度410K附近出现异常,认为是由于样品大量本征载流子产生并且外加磁场对顺磁区域影响较小所致.缺氧YBCO(x=0.13)陶瓷样品的磁电耦合特性,显示出它可能成为一种新的室温多铁材料从而在传感、控制和信息储存等方面发挥重要作用.     

Introduction to geothermal exploration on ascension island, South Atlantic Ocean

The exploration for a geothermal resource on Ascension Island utilized a strategy that initially employed geologic mapping. On the basis of this, subsurface faults were mapped using an aeromagnetic survey. The faults were then explored using electrical resistivity surveys to define areas of potential hydrothermal fluid up-welling. The results of all of these techniques were used to site temperature gradient holes. A deep geothermal exploration well was then drilled in the area with highest heat flow adjacent to a rhyolite-to-trachyte volcanic complex.     

玲珑金矿田含矿断裂的基岩地球化学特征及找矿潜力评价

基岩地球化学方法广泛应用于地质找矿与生产实践,是开展深部找矿预测最直接的方法和手段。通过对玲珑金矿田井下含矿断裂和招平断裂的基岩剖面地球化学特征进行系统研究,得出以下认识：玲珑金矿田原生晕最佳指示元素组合为Au、Ag、Bi、As和Co,且Au-Ag、Au-Bi、Au-As及Au-Co元素之间呈较好的幂指数正相关。根据玲珑金矿田已探明矿脉最佳指示元素组合的统计结果,结合招平断裂基岩剖面地球化学测量结果,发现招平断裂在地表有2处金矿化异常,推测其为矿致异常,反映出该地段具有较好的找矿潜力,特别是前花园村东1021剖面中异常找矿潜力更大。     

The International Society for the Study of Vascular Anomalies (ISSVA) ontology

The International Society for the Study of Vascular Anomalies (ISSVA) provides a classification for vascular anomalies that enables specialists to unambiguously classify diagnoses. This classification is only available in PDF format and is not machine-readable, nor does it provide unique identifiers that allow for structured registration. In this paper, we describe the process of transforming the ISSVA classification into an ontology. We also describe the structure of this ontology, as well as two applications of the ontology using examples from the domain of rare disease research. We used the expertise of an ontology expert and clinician during the development process. We semi-automatically added mappings to relevant external ontologies using automated ontology matching systems and manual assessment by experts. The ISSVA ontology should contribute to making data for vascular anomaly research more Findable, Accessible, Interoperable, and Reusable (FAIR). The ontology is available at https://bioportal.bioontology.org/ontologies/ISSVA.     

沟系土壤地球化学测量在河南何家村金矿勘查中的应用

通过在河南嵩县何家村金矿区实施沟系土壤地球化学测量,并对矿区土壤地球化学特征进行分析解译及异常查证,发现了一批具有价值的地球化学异常。结合地层、岩性、构造等有利控矿因素,对金、银、铜、铅元素地球化学异常区的成矿潜力进行分析,进一步明确找矿方向,缩小了找矿范围,圈定出7个找矿靶区,对各靶区实施山地工程验证,初步估算矿区金金属资源量在5 t左右,取得了较好的找矿成果,为进一步的地质工作提供了依据。     

Reducing Vulnerability of Water Resources of Canadian Prairies to Potential Droughts and Possible Climatic Warming

Past and the present studies show that the Canadian Prairies havebecome warmer and may have been drier in the last four to five decadesbut the drying trends are scattered and inconclusive.Statistical analysis shows that only the Winter and Fall (insome instances) precipitation is marginally related to ENSO andthe PNA (Pacific North Americ) Index, and streamflow is highlyvariable. With uncertainties on the potential impact of climaticchange and other uncertainties, several strategies are proposedto reduce the vulnerability of the Prairies to future droughts,where surface water is the primary water supply and agricultureis the major water user: (1) Continue implementing small-scalewater resources projects and increase water storage through snowmanagement, (2) increase integration between existing waterresources systems, and (3) promote water conservation measuresin agriculture practice, water pricing and water metering.