钨锡在花岗质硅酸盐熔体和共存含水流体间的分配实验研究

本文在进一步改进关键性实验技术的基础上,利用快速淬火高压釜系统成功地完成了四个系列的含水卤化物介质-花岗质岩浆体系中钨锡的流-熔分配实验。确定了一批钨锡流-熔分配系数;并建立了它们与卤化物摩尔浓度之间的线性关系式;分析了氯、钠、氟、钾对钨锡流-熔分配的影响;指出传统的钨锡岩浆期后热液成矿模式值得修正。     

与花岗岩有关的锡成矿研究进展

对与花岗岩有关的锡矿床中锡的成矿机制及相关研究进展进行归纳和总结.研究结果表明:锡成矿作用在时间和空间上与花岗岩密切相关,花岗岩为锡成矿提供了重要物源和成矿场所.花岗岩类型、变质沉积基底的重熔、岩浆源区及演化、熔体物化条件及锡在熔体中的存在形式等都是锡富集的重要控制因素;锡在熔体?流体间的分配行为可以解释锡的富集?沉淀...     

氯化亚锡-硫氰酸盐分光光度法测定锡精矿中钨结果的不确定度评定

采用氯化亚锡为还原剂,对硫氰酸盐分光光度法测定锡精矿中钨结果进行不确定度研究。测量过程中的不确定度主要来自样品制备过程引起的不确定度,定容导致的不确定度,溶液中钨的测量结果和测量结果重复性引起的不确定度,转化系数0．7931引入的不确定度以及试剂空白产生的不确定度。对各不确定分量进行分析计算,合成各不确定度分量,并乘以扩展因子2得到扩展不确定度。对于钨含量为208．5ug／g的锡精矿,其扩展不确定度为20．97ug／g。     

高温及等离子体环境下液态锡与钨筛网的相容性研究

本文利用真空管式炉和四川大学直线等离子体与材料表面相互作用平台（SCU-PSI）, 探究了静态高温以及高密度氢等离子体环境下液态锡（Sn）对钨基多孔筛网结构（CPS）的润湿及腐蚀行为. 实验结果发现,在静态高温环境下液态Sn润湿钨筛网（4层150目）的阈值温度为950 ℃,且随着实验温度升高,润湿效果越好. 当实验温度达到1050 ℃时,在钨筛网表面观察到大量SnO2棒状结构. 这种棒状结构可能是由于管式炉中存在少量的氧气,在高温作用下Sn和氧气发生反应生成SnO2纳米晶. 当液态Sn-CPS结构进一步被离子通量为7.71×1022 m-2*s-1和热负荷为54.55 kW*m-2 的氢等离子体辐照时,钨筛网出现大面积断裂,形成丝状结构;而在没有液态Sn润湿的情况下,钨筛网表面没有出现类似损伤. 这可能是在高密度氢等离子体辐照作用下,氢等离子体与SnO2的协同作用加剧了钨筛网的损伤,造成了钨丝硬化断裂. 本文的实验结果为未来液态Sn-CPS在聚变装置中的实际应用提供了一定的参考.     

岩浆深渊分异在新疆黄山东杂岩体成岩成矿中的作用

根据野外地质特征及室内岩石学的综合分析,详细论证了新疆哈密黄山东镁铁超镁铁杂岩体为同源岩浆在深渊经过液态重力分异、硫化物熔离和橄榄石结晶作用之后,在构造—岩浆作用下取同道、占据同一构造空间形成的复式岩体。杂岩体的整个成岩成矿作用主要受岩浆深渊分异作用所控制。     

粤东地区中生代金属矿床的成矿机制

在前人大量系统和深入的成矿地质背景和成矿地质地球化学研究的基础上,根据粤东地区锡、钨、铜、银、金多金属矿床(点)区域成矿作用特征,着重探讨了在中生代花岗质火山-侵入杂岩岩浆作用的背景下,成矿元素的富集过程及成矿物质的迁移、沉淀机制.研究认为,成矿物质的富集经历了地壳岩石的选择性部分熔融、花岗质岩浆分异、流体-熔体分馏和流体与流经岩石相互反应(水-岩作用)4个阶段.由于作为热源的岩浆熔体的存在及不同成因断裂裂隙构造的产生,富含成矿元素的岩浆热液流体上升,并与深循环的大气降水热液混合,形成热液对流体系.在长期的热液对流循环中,随着构造脉动和物理化学条件的改变,沉淀出不同阶段的矿石,并在不同的构造部位和围岩中形成不同类型的矿床.     

金在带状辉长辉绿岩脉形成时的性状

斯米尔诺夫和其他地质学家在其著作中指出,内生矿床的矿质来源有岩浆的、同化的和渗流水的三种。从许多金矿区都可以看出,内生金矿的成矿作用与玄武质或花岗质岩浆有空间的或共生关系。但是,对金在岩浆过程中的地球化学作用尚未进行充分研究。     

阿拉善地区华北板块北部陆缘区成矿作用的研究

本文从构造环境与成矿作用关系的角度，论述了研究区不同构造单元的成矿特征。宗乃山－沙拉扎山岛弧区有利于寻找热液型、矽卡岩型的铁、铜矿床和多金属矿床；查干础鲁－霍尔森边缘海蛇绿混杂带是寻找铬铁矿的有利地带；雅布赖－巴音诺尔公大陆弧区的成矿作用比较复杂，随着构造的演化有铜、镍－铜、铁－钨、锡和萤石等矿化的演变过程。与边缘海洋壳俯冲有关的那仁哈拉韧性剪切带很可能形成原生金矿。     

广西全州越城岭花岗岩体东部钨、锡、钼矿产找矿勘查预测探讨

广西全州越城岭花岗岩体东部地区成矿条件好,钨锡（钼）矿化普遍、矿化点密集分布,迄今除个别矿点工作程度相对较高,达到详查外,大部分矿点皆只限于地表矿点勘查或普查,至今只有一个仅具有地方工业价值的小型矿床,其余皆为矿（4C）点。此次的钨锡（钼）成因类型可分高-中温热液型、矽卡岩型二类,越城岭花岗岩体西侧还有含锡矿、绿柱石及铌钽的伟晶岩型。可初步预测预测该区钨〉10万吨．锡〉5万吨,铅锌〉10万吨。     

煎茶岭含钴硫化镍矿床成矿作用研究

对煎茶岭硫化镍矿床地质背景、岩体及矿石的地质地球化学特征进行了研究。结果表明：煎茶岭大型含钴硫化镍矿床的形成与镁质超基性岩体密切相关且具有特殊性，其成矿物质主要来源于深部岩浆；源自上地幔局部熔融的母岩浆，在通过上地幔岩石圈上升侵位过程中，就地发生硫化物熔离作用和硫化作用，形成早期的富镍矿体和部分贫矿石；稍后的蛇纹石化作用是形成该矿床中后期富镍矿体的主要原因；元古代岩浆作用、硫化作用和蛇纹石化作用是煎茶岭镍矿床主要的成矿作用方式；成矿机制是岩浆分结 硫化熔离 蛇纹乒化。认为该镍矿床PGE含量较低互贫铜，Cu／Ni值极低，成因上属岩浆型矿床，但后期存在热液成矿作用。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.