厄瓜多尔Colorado v金矿区成矿规律及找矿标志研究

文章初步概括了厄瓜多尔艾尔奥罗省Coloradov矿区金矿床的地质特征,并进行了成矿阶段研究,总结了成矿规律和找矿标志。Coloradov矿区位于厄瓜多尔西南地区的构造-岩浆岩带中,通过分析其成矿地质背景,划分出六个主要的蚀变及成矿阶段,总结概括了该矿区的典型成矿地质特征,确定其矿床类型为斑岩型金矿床。从矿化富集规律、蚀变矿化分带规律、构造控矿规律和岩体控矿规律四个方面阐述了该矿区成矿规律。最后提出了该矿区的六个找矿标志,用以指导下一步探矿工作。     

黑岚沟矿区金矿成矿规律探讨

从矿区金矿床的地质特征、矿化空间分布规律、成矿时代、成矿物质来源及成矿机理等方面探讨了黑岚沟矿区金矿成矿规律,并总结了成矿模式,指出了矿区今后的找矿方向。     

西藏南部马扎拉金锑矿成矿规律初探

从区域成矿地质背景、矿区金锑矿地质特征、矿化空间分布规律、控矿因素等方面初步探讨了马扎拉金锑矿区金锑成矿的规律,并对其成矿作用进行了系统分析,最后指出了该矿区今后的找矿方向。     

西藏南部马扎拉金锑矿成矿规律初探

从区域成矿地质背景、矿区金锑矿地质特征、矿化空间分布规律、控矿因素等方面初步探讨了马扎拉金锑矿区金锑成矿的规律 ,并对其成矿作用进行了系统分析 ,最后指出了该矿区今后的找矿方向。     

西藏南部马扎拉金锑矿成矿规律初探

从区域成矿地质背景、矿区金锑矿地质特征、矿化空间分布规律、控矿因素等方面初步探讨了马扎拉金锑矿区金锑成矿的规律,并对其成矿作用进行了系统分析,最后指出了该矿区今后的找矿方向。     

湖南省常宁市两头岩矿区锡矿找矿浅析

本文主要介绍湖南省常宁市两头岩矿区的成矿地质背景,并结合大量的实际地质资料,对矿区锡矿成矿规律进行了探讨,认为两头岩矿区锡矿主要受地层、构造及岩浆岩控制,具有一定的时空分布规律,当前国内锡矿供应形势紧张的形势下,研究锡矿成矿规律,对推动省内锡矿的勘查工作,具有一定的社会意义和经济意义。     

四川甘孜嘎拉金矿地质特征与找矿方向研究

甘孜嘎拉矿区位于甘孜—理塘断裂带北部,地质构造复杂,演变时间较长,矿产资源比较丰富。本文主要对甘孜嘎拉金矿矿区的成矿背景、矿区的地质特征以及地质构、金矿的成矿规律以及找矿方向进行了介绍了,详细阐述了甘孜嘎拉金矿矿区成矿的基础条件,为之后的研究提供参考。     

新疆北山地区金矿成矿地质条件与成矿规律研究

新疆北山地区是我国重要的金矿产区之一,但由于金矿成矿地质条件与成矿规律存在争议,相关研究不足,制约了区内勘探工作的顺利开展,因此提出新疆北山地区金矿成矿地质条件与成矿规律研究。首先对新疆北山地区地质背景概况进行说明,从矿区地质和矿石特征两个方面说明成矿地质条件,从地层物质来源、成矿作用两个方面说明成矿规律,完成新疆北山地区金矿成矿地质条件与成矿规律研究,为进一步的金矿勘察与预测提供了依据。     

新金厂金矿地质特征及找矿方向

从区域成矿地质背景、矿区地质、矿体、矿石特征及金的赋存状态、围岩蚀变等方面阐明了新金厂金矿床地质特征、成矿规律和找矿方向     

九寨沟铁桦岭金矿矿区地质特征研究

草地矿区铁桦岭金矿位于阿坝藏族羌族自治州九寨沟县草地乡,矿区目前已完成详查工作,为扩大矿区采矿权范围、为矿山总体开发综合利用及建设设计提供金矿资源储量和开采技术条件等地质依据,通过对矿区地层、构造、岩浆岩和变质作用及围岩蚀变的研究,总结矿区地质特征及成矿规律,分析地质特征与成矿规律之间的相互关系,为下一步深部勘探及外围找矿提供参考性意见。     

萃取分离-碘量自动电位滴定法测定三氧化二锑中砷

针对产品检验中常遇到三氧化二锑产品中掺有三氧化二砷的情况,建立了碘量自动电位滴定法测定三氧化二锑中较宽砷含量范围的方法。样品采用硫酸溶解,用强酸/乙醚萃取分离,砷进入醚层,再用水反萃取砷于水溶液中,将砷与锑、铅、铋、铜、硒等共存元素分离,以碘标准滴定液作为滴定氧化剂,实现了三氧化二锑样品中砷质量分数为0.002%~50%的测定。对仪器参数进行了优化,应用自动电位仪的动态进给模式,选定信号漂移率为50 mV/min,搅拌速度为1 000 r/min,电位评估为30,最大递增量为200 μL,最小增量为10 μL。干扰试验表明,少量萃取分离不完全的共存元素铁因不与碘标准溶液反应,因此不影响砷的测定结果。将实验方法应用于三氧化二锑实际样品中砷的测定,测得结果与国标方法GB/T 3253.1—2008基本一致,相对标准偏差(RSD,n=6)为0.18％～7.7%。     

Phonological priming in the lexical decision task: regularity effects are not necessary evidence for assembly

The contribution of assembled phonology in reading English was examined in the lexical decision task by comparing two markers: regularity effects and phonological priming. Strategic control was assessed by manipulating the phonological lexicality of the foils: Experiment 1 used legal nonwords, whereas Experiment 2 used pseudohomophones. Replicating existing findings, null regularity effects were obtained in the presence of legal nonwords. Modest regularity effects, in accuracy only, were observed with pseudohomophone foils. In contrast, phonological priming effects emerged in each of the experiments, regardless of the presence of regularity effects. Assembled phonology thus constrains reading under conditions that strongly discourage its use. However, regularity effects are not necessary evidence for its presence. The dissociation of regularity and phonological priming effects is discussed in terms of the two-cycles model.     

Recognition memory for novel stimuli: The structural regularity hypothesis.

Early studies of human memory suggest that adherence to a known structural regularity (e.g., orthographic regularity) benefits memory for an otherwise novel stimulus (e.g., G. A. Miller, 1958). However, a more recent study suggests that structural regularity can lead to an increase in false-positive responses on recognition memory tests (B. W. A. Whittlesea & L. D. Williams, 1998). In the present study the authors attempted to identify the circumstances under which structural regularity benefits old-new discrimination and those under which it leads to an increase in false-positive responses. The highly generalizable tendency shown here is for structural regularity to benefit old-new discrimination. The increase in false-positive responses for structurally regular novel items may be limited to situations in which regularity is confounded with similarity to studied items. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dysfluent reading in the absence of spelling difficulties: A specific disability in regular orthographies.

Two large studies identified substantial numbers of German-speaking children (Grade 3) with marked dissociations between reading and spelling difficulties. These dissociations were expected because German exhibits high regularity in the direction of graphemes to phonemes (forward regularity) but not in the direction of phonemes to graphemes (backward regularity). High forward regularity allows reliance on phonological processing in reading (even in advanced fluent reading), whereas low backward regularity requires reliance on orthographic memory representations in spelling. Dysfluent reading in the absence of spelling difficulties was associated only with a naming speed deficit--assessed at school entrance--but not with phonological memory or phonological awareness deficits. In contrast, a specific spelling deficit was preceded by phonological deficits. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

沂南金矿矽卡岩型多金属矿床成矿规律及深部找矿预测

通过金龙矿床的成矿规律特征分析,从铜井岩体的地质特点、岩浆及矿液活动中心、含矿层与矽卡岩、矿体的空间分布等方面对矿床进行成矿规律总结,同时运用此规律对矿床深部及边缘进行成矿规律研究和找矿预测。     

Regularity effects and the phonological deficit model of reading disabilities: A meta-analytic review.

This article presents a meta-analysis of spelling-to-sound regularity effects in individuals with reading disabilities and reading-level comparison groups. The phonological-deficit model of reading disabilities, coupled with the classic dual-route model of word recognition, has led to two predictions: (a) a specific deficit in the pseudoword reading of those with reading disabilities and (b) an absent or reduced regularity effect for those with reading disabilities relative to reading-level controls. Previous reviews confirm the first prediction. The present meta-analysis tested the second prediction. There was a clear effect of word regularity for individuals with reading disabilities, the magnitude of which did not differ from the word regularity effect for reading-level controls. The authors explore how the contradictory support for these 2 predictions is inconsistent with classic dual-route models of word reading and how connectionist models are consistent with the empirical findings on reading disability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

甘肃成县毕家山铅锌矿床成矿规律探讨

通过对毕家山铅锌矿的矿床地质特征及探采实践成果资料的研究和对比,总结出了矿床成矿规律,并且论述了矿床成矿规律在矿山生产探矿及采矿过程中的实用意义。     

镀锌产品表面粗糙度影响因素的研究

以马钢第四钢轧总厂1#镀锌线的产品为研究对象,通过大量的数据检测,分析了热浸镀锌产品带钢表面粗糙度的影响因素,并得出变化规律。这些规律可以运用到实际生产中来对带钢表面的粗糙度进行计算和控制。