肝腺瘤的CT诊断和鉴别诊断

目的：观察肝腺瘤的CT表现,总结其具有诊断意义的影像学特征。方法：分析经病理证实的7例肝腺瘤CT图像．对病灶的平扫及增强扫描进行观察。结果：平扫：7例均为单发肿块,直径3．5—7．5cm,平均5．5cm。3例见稍低密度包膜影．3例见不完整包膜。3例表现稍低密度背景下间杂片状高密度出血灶。增强扫描：动脉期5个病灶中度强化,门脉期持续强化．延迟期呈等或略高密度,可见假包膜。2例呈类似肝癌的速升速降型强化,但其强化程度不如肝癌迅速。平扫时病灶内高密度区域．增强扫描三期均无明显强化。包膜的强化大部呈延时强化的趋势。结论：肝腺瘤在CT扫描中有一定特征。准确把握其影像学表现,可以大大提高诊断的准确率。     

西昆仑造山带东段苦阿变质橄榄岩的发现及地质意义初探

基于国土资源航空物探遥感中心圈定的新C-2013-85号航磁异常,通过三级查证工作,于苦阿一带原石炭系阿羌岩组中新发现一套变质橄榄岩,其与变玄武岩、变辉绿玢岩共生。结合以往研究认为,该套岩石可能为西昆仑造山带中残留的原特提斯洋壳物质,在空间上与西侧其曼于特蛇绿混杂岩相连。西昆仑造山带原特提斯缝合带往东延至苦阿一带。变质橄榄岩磁异常明显,Ni含量(0.18%)接近边界品位,指示该异常可能为一处矿致异常,具一定镍矿找矿前景。     

河北安妥岭钼矿床地质特征及找矿方向

摘 要：安妥岭矿区位于河北省涞水县北部,地处华北地台北缘、燕辽钼（铜）成矿带西南端。该成矿带受区域NNE向上黄旗-乌龙沟深大断裂和紫荆关-灵山断裂的联合控制。在总结区域地质背景、矿区地质特征的基础上,分析区内岩石地球化学特征、构造特征、岩体侵入位置与矿体分布之间的关系,初步探讨安妥岭钼矿床的控矿因素和矿床成因,认为安妥岭钼矿床属于中-低温热液型矿床。提出NNW、NW向断裂活动促进矿体的进一步富集,在岩体西部存在着大量与成矿有关的断裂,是下一步找矿重点;矿区东部岩体与地层接触部位的隐爆角砾岩也是矿体富集的有利部位。本研究为矿区深部及外围探矿提供了新的找矿方向。     

河北承德地区钼矿成矿地质特征及成矿预测

承德地区位于华北地台北缘中段受EW、NE和NNE向断裂联合控制的钼（铜）多金属成矿带上。20世纪,在该区先后发现了斑岩型撒岱沟门钼矿床、矽卡岩型寿王坟钼多金属矿床和脉型大草坪钼矿,显示出该区具有良好的成矿背景和找矿前景。该区钼矿床的形成与燕山期中—酸性小侵入体关系密切,矿床多产于花岗斑岩体之中或其内外接触带中。在充分收集承德地区典型钼（铜）矿床地质资料的基础上,结合前人的研究成果,系统总结了承德地区钼矿床的地质特征、矿床类型及时空分布规律,预测了该区钼矿找矿方向和靶区,为加强区内钼矿资源勘查、实现该区钼矿找矿突破提供参考。     

Cells behaviors and genotoxicity on topological surface

To investigate different cells behaviors and genotoxicity, which were driven by specific microenvironments, three patterned surfaces (pillars, wide grooves and narrow grooves) and one smooth surface were prepared by template-based technique. Vinculin is a membrane-cytoskeletal protein in focal adhesion plaques and associates with cell–cell and cell–matrix junctions, which can promote cell adhesion and spreading. The immunofluorescence staining of vinculin revealed that the narrow grooves patterned substrate was favorable for L929 cell adhesion. For cell multiplication, the narrow grooves surface was fitted for the proliferation of L929, L02 and MSC cells, the pillars surface was only in favor of L929 cells to proliferate during 7 days of cell cultivation. Cell genetic toxicity was evaluated by cellular micronuclei test (MNT). The results indicated that topological surfaces were more suitable for L929 cells to proliferate and maintain the stability of genome. On the contrary, the narrow grooves surface induced higher micronuclei ratio of L02 and MSC cells than other surfaces. With the comprehensive results of cell multiplication and MNT, it was concluded that the wide grooves surface was best fitted for L02 cells to proliferate and have less DNA damages, and the smooth surface was optimum for the research of MSC cells in vitro.     

能量色散X射线荧光光谱仪快速测定土壤中Cu、Pb、Zn、Rb、Nb和Th6种元素

直接使用粉末样品,用便携式能量色散X射线荧光光谱仪测定土壤样品中的Cu、、Zn、Pb、Rb、Nb和Th等6种元素。使用土壤、水系沉积物标准样品建立校准曲线,用铑靶Kα线的康普顿散射线作为内标校正基体效应。方法简便、快速、准确。除Th精密度为13%外,各组分分析的精密度(RSD,n=12)均小于6%,完全能满足化探样品测定的要求。     

内蒙古哈达门沟地区金矿地质特征与找矿方向

内蒙古哈达门沟地区是华北陆块北缘重要的金矿集中区之一,金矿体主要产在乌拉山岩群变质岩中,矿石类型主要为石英脉型、石英-钾长石脉型和钾硅化蚀变岩型,具有多期成矿的特点,主成矿期为印支期。在成矿地质背景研究、矿床地质特征、控矿因素和找矿标志分析的基础上,结合区域地球物理、地球化学资料和近年来的勘查成果,认为矿区深部和外围仍有很大的找矿潜力。     

Pictorial Representation and Metaphor in Visual Language Design

This paper reports the results of seven different experiments, assessing the benefit that users gain from the inclusion of pictorial features such as pictorial metaphor, visual mnemonics or support for visual imagery in visual languages. The experiments are based on typical programming tasks such as problem solving, construction and interpretation. They employed a number of experimental languages, including both implicit pictorial representations and explicitly verbal metaphorical explanations. The results of these experiments indicate that special design considerations apply to visual languages. Direct application of Graphical User Interface metaphors does not result in automatic improvements in usability of visual languages for typical programming tasks. Visual languages can benefit from pictorial mnemonics, but systematic explanatory metaphors (whether visual or verbal) are less useful than consistent presentation of language abstractions.     

浅湖区水上瞬变电磁法探测地下构造效果研究

本文应用水上瞬变电磁方法探测承德坝上地区月亮湖水文地质结构。为了解浅湖区深部地层、断裂及导水构造特征,在总结前人开展的水(海)上瞬变电磁勘探经验的基础上,采用晚期道信噪比较高的中心回线(大定源)瞬变电磁装置,对水下岩层垂向结构及隐伏断裂进行了探测。通过采集试验确定了有效的工作参数,在严格数据采集过程、选用合理的数据处理方法基础上取得了较好的应用效果。结果表明:大定源瞬变电磁装置在浅湖区可达到200 m的探测深度,垂向可分辨厚度为21～50 m的玄武岩层,剖面深部地层横向连续性好,不存在导水断裂,湖区下方探测结果受"低阻屏蔽效应"影响存在相对低阻异常,地质解释须结合地质资料综合研判。本次工作可为其他浅水区瞬变电磁勘探提供借鉴。     

韩国原生"东海地浆水"功效与开发前景

韩国原生“东海地浆水”富含对人体健康有益的微量元素与矿物质，具有独特的抑制有害细菌生长的功效。“地浆水”是否还蕴含较强的能量场效应，作用于生命机体及促进新陈代谢还有待进一步进行深入研究。