氟的环境化学

氟是环境污染元素。自然界中氟的存在形式。含氟工业。我国有关氟含量的规定。氟的危害。氟的治理。     

团队的内部冲突与管理策略

1团队冲突的类型根据团队冲突的主体划分。1)成员与团队之间的冲突。2)团队成员之间的冲突。根据团队冲突的影响因素划分。1)认知性冲突。2)情感性冲突。根据团队冲突的效果划分。1)建设性冲突。2)破坏性冲突。     

不让高科技蒙受羞辱

5月,我走过这美丽的城市。这是个和平的城市。白天,阳光灿烂;夜晚,春风沉醉。人们在编织未来,渴望在那里面装满幸福、快乐、爱情和创造的自由……然而,它今天变了。我看见充满火的眼睛在街道上流动。愤怒像爆米花一样突然膨胀了,充满了城市的每个空间。震耳欲聋的怒吼像炽热的岩浆一样从火山口里喷发出来。这是一个愤怒的城市。这是为什么?我想问。去问蓝天、白云。问路旁如血一样盛开的鲜花。问白塔顶上缭绕不绝的鸽哨。问姑娘们诱人的时装。问在春天花园里唱《莫斯科郊外的晚上》的可爱的小伙子。问在大商场里不知疲倦的顾客。问在电脑旁熬过通宵的博士们。问热情好客又能侃能发牢骚的出租车司机。问从学校闸门放出来的欢快的孩子的潮流。……问我自已。     

智能交通

交通是人类社会的一个必要元素，从某种角度看。人类社会的进步就是一部交通发展史。随着科技的不断进步。尤其是工业革命以来。人类的交通事业有了质的飞跃。从而拉近了整个世界的距离。如今。交通不再是一种地理和空间的桎梏。而是成为经济、政治、文化交流的重要媒介。发挥着重要的作用。然而伴随着城市化的步伐。交通的极速发展也给人类带来了环境污染、资源消耗、生态破坏、城市生活质量下降等一系列社会问题。     

本刊总目录(总1期——总7期)

序号 题 目 作 者 期号 页码 1 调整我国农业机械高等教育的几点意见 宋亚欣 高良润 21 2 我国农业机械化的回顾与前瞻 吴相渣 11 3 关干发展我国植保机械的若干问题 高良润 19 4 我国衣村能源的利用、开发与节约 吴相e 41 5 改进与发展农用柴油机若干途径的探讨 谭NH 4 12 6 热处理技术的发展趋势和国内简况 周汝霖 4 25 。。___;。。_。I。_。。施钧亮 金树德 7 发展我国喷灌用喷头的探讨 ZZ告 一’”’“116 _。_。。,。;、l。。。/、。。一·。李世英 。。。,l\。;。。;。、;,。。。、,。、,、。。金树德 曹武陵 8 我国轻小型喷灌机具…     

千年的爱情——中国古典爱情诗词简析

中国可以说是一个诗的国度。在中国诗歌发展中,以爱情为主题的诗歌占了很大一部分。虽然反映的是一个永恒的主题,但每个阶段的表现手法不同。根据它的发展的时代的特色,可分为四个典型时期。一、《诗经》中的爱情民歌:感情炙烈、语言朴实关关雎鸠,在河之洲。窈窕淑女,君子好逑。参差荇菜,左右流之。窈窕淑女,寤寐求之。求之不得,寤寐思服。悠哉悠哉,辗转反侧。参差荇菜,左右采之。窈窕淑女,琴瑟友之。参差荇菜,左右毛艹之。窈窕淑女,钟鼓乐之。——<周南.关雎>你翻开中国文学的历史,首先遇到的就是这首《关雎》。这首诗在中国文学史上占据着…     

科技创新体制的建立与培育

科技体制创新是体制创新的核心。体制创新的目的是要解放生产力,而科技是第一生产力,科技创新能力是市场竞争成败的决定因素。我国目前企业与科技结合存在的主要问题是企业没有成为科技研发的主体。资本没有与科技紧密结合。人与科技体制的结合。市场与科技体制的结合。体制创新的主要举措:建立创新科研体制。建立创新科技行政管理体制。建立创新教育体制。建立创新制度体系,建立现代科研制度。     

伤心别离花

序:网金三十七年,武当弟子萧萧水寒为救爱人浅雪含嫣死于雪山之颠。四月初五。清明。细雨朦朦。百花谷旁的山脚下。一些细碎的白色野花开了。我儿时的记忆里,这一天是可以和故去的亲人见面的日子。这一天是萧萧水寒离我而去的第一百六十三天。他为我而死。而我还活着。我把他葬在雪山脚下。那是我们初     

火灾探测器 你安装了吗？

在普通人看来。火灾探测器似乎有些神秘莫测。在宾馆、饭店、商场等公众聚集场所稍加留心。你随处可以看到它的身影。然而我们对时时刻刻监视着火灾的它却常常视而不见。其实。认识火灾探测器。了解火灾探测器。对于我们早期控制火情。减少火灾损失大有裨益。掌握火灾探测器工作和安装的相关知识。对于广大城市居民。尤其是已经安装了火灾探测器等消防设备的单位。能够使火灾探测器更好的发挥作用。更好的保护人民的生命和财产安全。随着社会物质文明的进一步发展。火灾探测器进入寻常百姓家保护生命安全也是大势所趋。     

肉眼可见的仙女星系

仙女座是秋夜星空的代表星座之一。其中有一个著名的深空天体——仙女星系(M31)。这是在北半球大多数地区能看到的最亮、最大的河外星系。也是天文爱好者最喜欢观测和拍摄的目标之一。它是一个典型的旋涡星系。距离我们大约250万光年。换句话说。我们现在看到的。实际上是它250万年前的样子。在一个晴朗无月的夜晚。避开城市的灯光向它所在的天区望去。凭肉眼就能轻易地看到一个模模糊糊的光斑。用一台小望远镜。我们就能看到它明亮的核心。     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~