胆铜思想及其生产技术考--以韶关宋代岑水铜场为例

胆铜生产思想一般认为源于汉代，其实自春秋战国时代就萌芽了。以后逐渐认识到胆矾得铁可化为铜。魏晋南北朝已知用胆土煎铜，北宋把胆铜思想化为现实，解决当时“钱荒”问题，创造了用自然胆水浸铜，用胆土制造胆水淋铜、用胆土直接煎铜等多种方法大规模生产胆铜的工艺和技术。     

铜死亡在肿瘤治疗方面的研究进展

过量的铜可以导致肿瘤细胞发生程序性细胞死亡(PCD),即铜死亡。这一过程是通过破坏肿瘤细胞代谢和诱导蛋白质毒性应激发生的,这一发现强调了铜稳态和肿瘤代谢之间的复杂联系。综述细胞铜代谢和铜死亡的具体机制,阐述铜基纳米材料在肿瘤治疗中的应用。结果表明：铜死亡途径为肿瘤治疗开辟了新视角,具有广阔的应用前景。     

稀士元素在导电铜中的作用

本文研究了不同稀土添加剂在导电铜中的作用,发现稀土元素改变了夹杂物的形态,细化了晶粒(但Nd例外),提高了导电铜的机械性能;适量的稀土添加剂改变了导电铜中杂质存在的形态,净化了基体和晶界,改善了导电铜的导电性。     

纳米Cu／γ—Al2O3催化剂预处理对CO氧化活性的影响

以电弧等出子体法制备纳米铜活性组分,物理法制备出负载型的米Ｃｕ／γ－Ａｌ２Ｏ３催化剂,用于催化ＣＯ氧化反应,发现催化活性在催化过程中呈规律性变化,即初始活性较低,空气中焙烧预处理易使纳米粒子长大,催化剂的氧与ＣＯ还原实验表明铜氧化物活性高于Ｃｕ＾０。     

铜氨溶液电积铜的研究

工业铜渣和软锰矿在硫酸介质中经氧化还原,得到硫酸铜和硫酸锰混合溶液,净化过滤后,用氨与碳酸氢铵混合溶液分离锰得到的铜氨溶液,通过控制电解技术参数电解制得铜。研究表明在50℃、电流密度为150 A/m2条件下可以得到2#阴极铜。     

甲醇铜,乙酰乙酸乙酯铜的合成及性质研究

甲醇铜、乙酰乙酸乙酯铜的合成条件温和，实验表明：甲醇铜是含甲氧基桥键的二聚物，乙酰乙酸乙酯铜是铜的乙酰乙酯络合物。甲醇铅的活性比乙酰乙酸乙酯铜高，但甲醇铜易水解和不易溶于有机溶剂，而乙酰乙酸乙酯铜在有机溶剂中溶解性比甲醇铜大得多，乙酰乙酸乙酯铜可以代替甲醇铜用于溶胶－凝胶法制备功能材料。     

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.     

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.     

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.     

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.     

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。     

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that