氨基甲酸钼和钙化合物对脂摩擦性能的影响及其表面膜组成

研究了氨基甲酸钼(MoDTC)和钙化合物在润滑脂中的配伍性。添加MoDTC和钙化合物后,鋰和钙基脂的物理、化学性能仅发生轻微变化。四球机和MM200摩擦机试验表明:MoDTC添加石油磺酸钙或碳酸钙,在减磨和提高承载能力方面有增效作用。利用俄歇和光电子能谱仪,发现表面膜主要由MoS_2,MoO_3,FeS_2,CaCO_3和CaSO_4等组成。正是这种表面膜使得MoDTC和钙化合物具有增效作用。     

老子重“和”

《道德经》释万物之变,探兴衰之道,这其中有“和”。从道的创生方面看,道生万物,负阴而抱阳,冲气以为和。老子不但尊道而且贵德,“道生和”之外还主张“德含和”,既用赤子类比“含德之厚”,又用“终日号而不嗄”来说明“和之至”,再解释“前后相随”的“音声相和”。老子从纯粹理性到实践理性,注重“民合和”,并从“六亲不和”谈到“和大怨”,再到“挫其锐,解其纷”的“和光同尘”。表面看老子“和”思想以片段呈现,实则此三者“不可致诘”,是“混而为一”的,统一于“和”。     

注重高中生物理综合能力的培养

物理教学要求在教学中要重视概念和规律的建立过程,要切实培养提高学生的理解能力。要通过观察现象,观看演示和学生自己做实验,培养学生的观察能力和实验能力。要通过概念的形成,规律的得出,模型的建立,知识的运用等,培养学生抽象和概括,分析和综合、推理和判断思维能力以及科学的语言文字表达能力和口头交流能力。要培养学生运用数学处理问题能力,以及获取新知识和创新能力等。     

变通思维概论

变通是创造性思维的要素之一,它反映了创造性思维过程中转换和灵活应变的特征。创造性思维的变通特性是指发散项目的范围和维度。变通思维有多种形式和内容,从思维方向上分,有顺势、逆势和迂回3种,从思维信息来源和范围上分,有借势和造势之别。通过要素分析和解剖,就会得到变通思维5大类型和28个子系统,从而构建了变通思维的理论框架。     

中国蛇类保护和利用概述:历史、现状和未来

中国是世界上蛇类最为丰富的国家之一,也是蛇类资源利用的主要国家之一,中国蛇类的保护和利用历来受到国际机构和组织的关注。中国现有蛇类241种,其中30余种是很重要的资源动物,野外资源利用量巨大。随着环境污染、栖息地丧失和破碎化,以及过度利用,蛇类资源处于衰减之中,有数十种处于极度濒危和濒危状态,其中莽山烙铁头蛇(Protobrothropsmangshanensis)野外种群远小于大熊猫。为了保护和可持续利用这些珍贵资源,笔者概述了中国蛇类保护和利用的历史和现状,重点对中国蛇类养殖和贸易进行了汇总。最后,结合具有中国特色的社会主义生态文明建设,对今后的保护和可持续利用管理与研究进行了讨论。     

形象思维的逻辑研究

形象思维和理论思维,是“一个硬币的两面”。思维都是抽象的,都有逻辑,从可能世界和虚概念着眼,传统逻辑可以分析文学作品。形象思维和理论思维的差异在,科学发现和发明是分开的,是可以再发展的,而文学集发现和发明于一身,是一次性的。在人类文化史上,科学和文学双峰并峙,大文豪和大科学家都是大思想家。     

新技术革命的挑战与高校教学改革的原则对策新探

新的科技革命对高等教育提出的冲击和挑战,是极为全面而深刻的。高等教育必须面对挑战,进行全面和深刻的变革。教学改革是高等教育改革的核心和重点。加强学科专业的结构化改革,加强独立思考、独立判断能力、创造性思维能力的培养,是治理杂乱和肤浅的重要思路和有效途径。创造性思维和独立思考的科学批判精神,既是科学理性和科学思维的核心,也是现代文化的精神实质所在。     

陈清泰 电动车产业化初期仍需政府出手

正政府需要引导的内容包括,设计大量跨行业技术研发和突破,调整发展政策和行政法规,转换能源生产和供应结构,主动布局基础设施和建设等等。电动车产业化到底是跟随市场需求起步,还是在政府引导和调控下快速发展,政界、学界和企业界的看法都不尽相同,有颇多争议。但陈清泰认为,电动车产业在发展初期更需要政府出手。     

浅谈大学生心理健康教育

由于大学生涉世不深,缺乏实践经验,心理素质脆弱,当生活和学业遇到困难和挫折时,很容易引发心理疾患。如自卑心理、抑郁心理等等。大学生心理健康问题不但直接影响学生个人的健康成长,还会对集体和团队产生消极的影响。高等学校要切实加强学生心理健康教育工作,认识心理健康教育的重要性、必要性和迫切性,通过各种有效途径和方法,提高大学生心理健康教育水平,促进大学生全面素质的提高,引导大学生不断地加强心理品质修养和锻炼,为成才和就业打下良好的基础。     

古今误用年号例——从质疑“至和四年”说起

北宋“至和”,仅存3年。但古文献屡多“至和四年”之行文,显属无稽。甚者,又频见“至和五年”、“至和六年”、“至和七年”、“至和八年”、“至和九年”之记载,更是荒谬。对此,后学相率征引不疑,实有失文献学之真精神。     

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