仿古铁技术

仿古铁技术操作简单，投资少，适合手工作坊制作及大规模批量生产。由于铁锈疏松不能阻止底层的继续氧化，为保证产品质量，仿古铁工艺的底层应在铜及黄铜件上制作。现择要介绍于下：一、工艺流程常规前处理→镀铁（或氧化发黑）→做水锈流痕→干燥→上涂料→自然干燥→成品。二、操作步骤１．超声波除油抛光液配方：Ｈ３ＰＯ４　７０．５％～９３．６％ＨＮＯ３　２９．５％～６．４％在２５～４５℃条件下，浸蚀１～２ｍｉｎ２．镀铁配方ＦｅＣｌ２　２００～３５％ｇ／ＬＮａＣｌ１０～１５ｇ／ＬＭｕＣｌ２５ｇ／ＬｐＨ３～５，温度２５…     

鲈鱼(Lateolabrax japonicus)人工配合饲料中蛋白质最适含量的研究

本文探讨了配合饲料中不同蛋白质含量对鲈鱼（Ｌａｔｅｏｌａｂｒａｘｊａｐｏｎｉｃｕｓ）生长的影响。试验设五组，配合饲料组的蛋白质梯度分别为３２．４０％、３８．４６％、４３．３０％和４９．２５％，对照组投喂冰冻的科鱼类。在水温２５．０～２６．８℃、比重１．０１８０～１．０２３０的条件下，经２５天的试验得出：蛋白质含量为４３．３０％的配合饲料组，鲈鱼的相对增重率（１７６．１９％）、体长相对增长率（３０．３９％）、饵料系数（１．２３）等试验指标均最佳。经回归方程分析，鲈鱼配合饲料中蛋白质最适含量为４２．７３～４３．０４％。     

微甘菊生活史及其对除莠剂的反应研究

微甘菊种子细小．千粒重０．０８９２ｇ，在自然条件下６～８天内完全萌发，萌发率９５．３％。种子萌发最适温度２５～３０℃，４０℃可使种子完全丧失萌发能力，５℃则明显抑制种子萌发。无性繁殖的营养生长比实生苗生长更快，光照对种子萌发和营养生长都有明显的促进作用。有性繁殖期是在９月至翌年２月，这时花的生物量占植株地上部分总生物量的３８．７％～４２．８％。小花从现蕾、盛开到受精形成成熟种子仅１５～１７天，但每天需光照１２ｈ左右才能正常结实。除莠剂“兰达”（Ｒｏｕｎｄｕｐ）、“草坝王”（Ｂｅｎｔａｚｏｎ）、“毒莠定”（ＴＯＲＤＯＮ）和“恶草灵”（ＲＯＮＳＴＡＲ）都对微甘菊种子和幼苗有杀灭作用，其中以浓度为０．４％的“草坝王”和０．２％的“毒莠定”效果较佳。     

RP－HPLC法快速测定哒螨酮

研究了反相液相色谱法（ＲＰ－ＨＰＬＣ法）测定哒螨酮的条件。固定相为ＹＷＧ－Ｃ＿１８，甲醇水溶液（９０：１０）为流动相，流量为１ｍｌ／ｍｉｎ，检测波长为２２０ｎｍ。在上述条件下，哒螨酮线性范围为０～２５０ｎｇ／２５ｍｌ，检测限为０．２５ｎｇ／２５ｍｌ，相对偏差为０．１６，回收率为９９．６％～１０６．２％。该方法简便、快速、灵敏、准确，可用于农药厂样品的测定。     

矿物浮选药剂水杨羟肟酸和F20_3的HPLC分离和测定

提出了一种用高效液相色谱法分离和测定矿物浮选用表面活性剂水杨羟肟酸和Ｆ２０３的方法．在试验确定的最佳实验条件下，水杨羟肟酸的线性范围为（０．０５０～１．０）ｍｇ／２５ｍＬ，Ｆ２０３的线性范围为（０．０１０～１．０）ｍｇ／２５ｍＬ．，两者混合测定时，其线性范围不变．人工合成样品的分析结果表明：水杨羟肟酸的回收率在８８％～１０６％之间，Ｆ２０３的回收率在８５．５％～１０７％之间．还对矿物浮选后的实际样品进行了测定，得到单种药剂和混合药剂在矿物表面的吸附量符合一般等温吸附规律，并能很好地解释矿物浮选时药剂之间的协同作用     

降低海南铁矿烧结固体燃耗的研究

对海南铁矿烧结燃耗高的原因及降低燃耗的途径进行了研究．试验结果表明：用３０％澳矿代替海南粉矿，燃耗从１０１．８ｋｇ／ｔ降到９０．２５ｋｇ／ｔ；添加０．０３％添加剂，随着料层高度增加，节能效果变得明显，但是当料层高度超过４５０ｍｍ时，生产率降低；焦粉分加，可使焦粉配比由７．０％降到６．２％～６．５％，燃耗由９６．６５ｋｇ／ｔ降到８３．２５ｋｇ／ｔ．     

利用新指示反应催化掩蔽法测定痕量锰

本文研究了用氨三乙酸作活化剂，锰催化高碘酸钾氧化茜素紫３Ｂ褪色的新指示反应。该法具有良好的选择性，６０℃时其灵敏度达３．８１×１０￣（－８）ｇＭｎ／Ｌ，线性范围为１０．２５～９２．２５μｇＭｎ／２６Ｌ。本法已用于矿样及豆类作物中锰的测定，回收率为９３．０％～１０２．３％。     

首乌及其复方对平滑肌细胞增殖抑制作用的研究

目的：观察首乌、洁脉冲剂及其组分对平滑肌细胞体外药敏效应。方法：从“复方－单味药－活性成分”对比分析入手，采用ＭＴＴ法测定首乌、洁脉冲剂、大黄素及大黄酸对平滑肌细胞增殖抑制作用。结果：首乌、洁脉冲剂与大黄素的有效剂量范围为其血药浓度的２５～１２５倍；大黄酸有效剂量范围为其血药浓度的１２．５～７５倍。洁脉冲剂、大黄素对平滑肌细胞增殖抑制率分别为２１．５４％～９６．８９％，２４．６％～９４．５８％；而首乌、大黄酸效果较差，抑制率分别为１６．５６％～８６．５７％，１４．３８％～８５．６４％。并且随作用时间延长、药物浓度的增加抑制率都有一定的提高。结论：本研究为首乌、洁泳冲剂、大黄素及大黄酸的医学应用提供了理论依据，为中药复方药效学研究提供了一种可借鉴的方法。     

蓖麻酸甲酯裂解反应装置及工艺的评选

在不锈钢管式反应器中，考察了不同填料和引发剂对蓖麻酸甲酯裂解反应的影响。试验表明，未填充管式反应器具有操作方便，不易结炭，选择性高等优点。在优化工艺条件下，庚醛和十一烯酸甲酯的单程收率分别达２５．８％～２６．７％和４５．９％～４６．７％．     

青石斑鱼配合饵料中脂肪节约蛋白质效应的初步研究

本文探讨了在适宜蛋白质和脂肪含量下降低蛋白质含量的配合饵料对青石斑鱼生长的影响。试验设５组，在适宜蛋白质含量（５２．５５％）下设脂肪梯度９．８７％和１６．２５％；在降低蛋白质含量（４２．２５％）下设脂肪梯度９．６６％和１６．０４％；对照组投喂冰冻科鱼类。在水温２０．０～２７．５℃，比重１．０１８５～１．０２２０的条件下，经３５ｄ的试验得出：青石斑鱼配合饵料中在一定范围内提高脂肪含量能使更多的蛋白质用于鱼体的生长，而不是作为能源物质被消耗，从而提高蛋白质利用率，起到节约蛋白质的作用。     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the