基于铅锌矿床中锌ZN同位素特征探究

当前世界各国都在陆续开展针对铅锌矿床中锌同位素的研究,因为加强铅锌矿床中锌同位素的探究对于环境地球化学研发具有重要意义。铅锌矿床常见类型包括矽卡岩型、密西西比河谷型(MVT型)、喷流沉积型(SEDEX型)、火山热液块状硫化物型(VMS型)、砂页岩型、热液脉型、斑岩型。本文通过分析铅锌矿床中锌同位素的主要来源而对当前主要的两种锌同位素载体矿床矽卡岩型铅锌矿床和密西西比河谷型铅锌矿床中的锌同位素组成特征进行了探究,希望能为相关学者在此方面的研究提供必要的参考数据。     

东秦岭﹙河南段﹚钼矿床类型及找矿潜力分析

根据东秦岭﹙河南段﹚钼矿床3种成矿流体﹙燕山期岩浆作用形成的高温成矿热液、熊耳期火山期后热液、构造动力作用形成的中低温成矿流体﹚,对应划分3种钼矿床成因类型:岩浆热液交代型钼矿床、石英脉型钼矿床和构造蚀变岩型钼矿床。区内岩浆热液交代型钼矿床,是广义上的斑岩型钼矿,包括斑岩型钼矿、斑岩-矽卡岩型钼矿、斑岩-爆破角砾岩型钼矿、爆破角砾岩型、矽卡岩型钼矿钼矿。根据其产出空间位置不同,进一步划分内接触带型、接触带型和外接触带型矿床。文章还介绍了各类型典型钼矿床特征,分析了各类型钼矿床的找矿方向。     

几种典型环保封闭煤场工艺方案应用分析

为研究钢铁行业中B型、C型、D型、E型等4种封闭煤场在存储能力、占地指标和单位储量地上设施投资等指标的变化趋势,对B型(120 m跨度)、C型(60、75、98 m跨度)、D型(80、120 m外径)、E型筒仓(18、22 m外径)等8种典型煤场工艺方案的关键参数指标进行对比分析.结果 表明:在贮存能力和占地方面,大跨...     

高炉矮式液压泥炮

本文针对高炉炉前设备液压泥炮的发展进行概述 ,叙述了目前国内外较为先进的典型矮式液压泥炮 ,PW型、MHG型、IHI型、BG型和DDS型。     

云南省的主要金矿类型及重点找矿区域研究

云南省金矿类型多、资源丰富。主要的金矿类型有:变质碎屑岩型、沉积岩型(卡林型)、富碱斑岩型、侵入岩内及内外接触带型、红色粘土型和海相火山岩型。主要成矿区域包括哀牢山成矿带、大理-丽江-宁蒗成矿带、滇东南成矿区、怒江以西潞西-瑞丽成矿带。对上述金矿类型和重点找矿区进行了概述。     

建国以来大学生政治参与的范式转换及态势展望

建国以来,大学生政治参与从信念型服从型向利益分配型、从暴力准暴力革命型向和平合法建设型、从动员型无序型向自主型有序型、从形式参与向实际参与转变.大学生政治参与范式的转变是党执政合法性和治理有效性基础增强、我国民主政治建设不断推进的标志.大学生政治参与呈现出"扩大"和"有序"的发展态势.     

云南省的主要金矿类型及重点找矿区域研究

云南省金矿类型多、资源丰富。主要的金矿类型有：变质碎屑岩型、沉积岩型（卡林型）、富碱斑岩型、侵入岩内及内外接触带型、红色粘土型和海相火山岩型。主要成矿区域包括哀牢山成矿带、大理—丽江—宁蒗成矿带、滇东南成矿区、怒江以西潞西—瑞丽成矿带。对上述金矿类型和重点找矿区进行了概述。     

试论我国富锰矿类型,特征及控矿因素

富锰矿成因类型可以分为海底热水沉积型、火山喷发—沉积型、沉积受变质型、热液改造型和风化型。分别阐述和分析以上成因类型特别是风化型成因类型的形成机理。指出了富锰矿远景区和找矿的方向.     

浅谈科研院所企业化转制模式

介绍了科研院所实施企业化转制可供选择的主要模式 ,并探讨了一步到位型、进入型、改造型、一所两制型、联合型、裂变型模式的特点和适用条件 ,对推进当前正在实施的各级各行业科研院所制订切实可行的转制方案具有积极的指导价值。     

D370型树脂在氰化浸出提金工艺中的应用

对D 370型、201×4型和201×7型树脂从氰化贵液中吸附金、银的吸附容量以及选择性吸附能力进行了对比试验,并对载金D 370型树脂进行了解吸试验。其结果表明,D 370型树脂的各项技术指标,明显优于201×4型和201×7型树脂。     

The Solidus Surface in the Ti ― Ni ― Hf System in the Ti ― TiNi ― HfNi ― Hf Region

Studies have been done on the phase equilibria at subsolidus temperatures in the Ti TiNi HfNi Hf region of the Ti Ni Hf ternary system. The phases based on binary compounds and solid solutions of these components are accompanied in the equilibria by a phase based on an equiatomic ternary compound. This new phase belongs to the family of Laves phases and has a hexagonal crystal structure of MgZn₂ type. The solidus surface in the Ti TiNi HfNi Hf subsystem consists of the surface of the ternary phase alone, the surfaces of the six solid solutions based on the components and binary intermediate phases, the planes of five conode triangles, and the corresponding lineated surfaces.     

Mowrer on "Sin".

Comments on the article "Sin, the lesser of two evils" by O.H. Mower (1960). In a recent issue of the American Psychologist, Hobart Mowrer (see record 1961-03555-001) argues that because "sin" is a stronger word than "wrongdoing" or "irresponsibility" it is better for the "neurotic" individual to admit his "sins" than accept his "wrongdoings." In upholding the concept of individual (if not original) "sin," Mowrer is contending that the "neurotic" individual must, if he is to get "well," accept the following syllogism: (a) sinning is unjustified; (b) I have sinned; (c) therefore, I must justify my existence by acknowledging my sins, changing my ways, and becoming a nonsinner. At first blush, this seems like a perfectly valid syllogism. But, as Mowrer himself suggests, it rarely works in practice. The author contends that with a more objective and realistic restatement of Mowrer's syllogism, the problem of the "neurotic" individual's changing his ineffective and self-defeating behavior is hardly automatically solved; but (by having the definitional concepts of deep worthlessness and severe ego "insult" removed from his philosophic premises) he becomes much more likely resolutely to tackle what Mowrer accurately describes as his moralpsychological difficulties. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conscious and preconscious influences on recall: Another example of the restricting effects of awareness.

2 groups of 34 and 36 Ss were asked to recall a list of 27 words—10 associates to the word cheese, 10 unrelated words matched for frequency, 6 buffer words, and the stimulus word "Cheese," embedded in the center of the list. The pattern of recall was studied (a) before "Cheese" was recalled, (b) after "Cheese" was recalled, and (c) when "Cheese" was forgotten. As predicted, a significantly greater number of associates than control words were recalled before "Cheese" was recalled; after "Cheese" was recalled and when "Cheese" was forgotten, an equal number of associates and control words were recalled. Findings were substantially the same in the 2 groups of Ss. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

"Survivors" and "victims": long-term HIV positive individuals and the ethos of self-empowerment

Recent research on contemporary processes of self-construction has suggested that the concepts of "self", "health", "morality" and "responsibility" have become inextricably interconnected, to the extent that the "pursuit of health has become the pursuit of moral personhood" [R. Crawford (1994) The boundaries of the self and the unhealthy other: reflections on health, culture and AIDS, Social Science & Medicine 38(10), 1347-1365]. What happens then when a person becomes "diseased"? Are they doomed to the stagnant mire of "illness" and "immorality", to the role of undesirable "other"? What if the disease is HIV infection? Is it the case of HIV = AIDS = DEATH = "OTHER" par excellence? This paper addresses these issues by examining the constructions of "self" and "other" used by HIV positive individuals themselves. By reference to a specific group of people living with long-term HIV positive diagnoses, it demonstrates how unhealthy HIV infected "others", as perceived by "healthy" members of society, create their own conceptions of "self" and "other" which microcosmically mirror typical processes of identity construction. The content, function and potential advantages and disadvantages of these processes are highlighted.     

建筑设计创作中的"形"与"式"

"形式"属于哲学范畴的概念,与"内容"相对.建筑的"形"是点、线、面的统一,建筑设计创作中琦"式"是规律、法则、手法.本文对这两个方面作了一些探讨,以期对建筑创作中的形式有所认识和把握.     

Deformation Behavior and Texture Evolution of Ferrite and Austenite Phases in Lean Duplex Stainless Steel

To avoid cracks during hot rolling, a short process of direct cold rolling following solution treatment of the casting billet for preparing lean duplex stainless steel plates is proposed. The effect of cold rolling reduction on the microstructure, texture, and mechanical properties of UNS S32101 is investigated. The results show that dislocation slip is the main character in ferrite, which leads to dislocation tangles, dislocation cells, high-density dislocation walls, and deformed microbands. However, twinning and strain-induced martensite transformation (SIMT) occur in austenite, and the SIMT mechanism of austenite follows the classical model γ → ε → α′ and γ → α′, with the orientation relationship of Kurdjumov–Sachs ( $$ and $$) and Nishyama–Wassermann (N–W) ( $$ and $$). Meanwhile, at 50%, there is a transition from Cu texture to Brass texture in the austenite phase. At 12.5%, the yield strength is 344 MPa higher than that of the traditional hot rolling process, and the elongation remains about 35%. With the increasing cold rolling reduction, the elongation decreases while the strength rises significantly. Strengthening dislocations, fine-tuning grains, and SIMT are the primary contributors to the improvement in strength.     

Independence and resistance to perceptual field forces.

36 "independents" and 36 "yielders" were selected from the extremes of a distribution of 143 Ss scored on an inventory measure of conformity. While looking at a Necker reversible cube Ss were instructed to keep the perspective in the "up" phase. At random intervals Ss recorded the actual phase perceived. The "independents" had fewer reversals of perspective than the "yielders" (p     

Enthalpy of Mixing and Excess Volume of Binary Metallic Melts of Eutectic Systems

The enthalpies of mixing H and excess volumes V were analyzed in alloy formation from binary metallic eutectic systems. Three types of systems can be distinguished: I with H > 0, V > 0; II with H > 0, V 0; III with H < 0, V 0. The hypothesis is discussed that another yet unstudied group IV exists in which H < 0, V < 0.     

Weighted application blank analysis of "contingency" items.

This note discusses the effect of assigning weights independently to such related item categories as "marital status" and "number of children," where "single status" forces a "no children" response. It is suggested that, in the contingent item-category, the "can't respond" group be separated out before percents and weights are computed on the rest of the sample. (PsycINFO Database Record (c) 2010 APA, all rights reserved)