义马千秋煤矿冲击地压危险性分析

通过试验测定了义马千秋煤矿2#主采煤层的冲击倾向性，具体分析了发生冲击地压的影响因素，并据此划定了千秋煤矿可能发生冲击地压的危险区域。     

荧光测则定水中微量油分含量的探讨

本着重从重从溶剂的选择，萃取次数及标准油品的选择等方面。对用荧光法测定水中微量油分的含量进行了初步探讨，实验证明，用荧光法测定水中微量油分的含量，简单易行，快速准确，可靠性好。     

农用地分等成果在征地区片综合地价确定中的应用分析——以内蒙古呼和浩特市回民区为例

将农用地分等成果应用于征地区片综合地价中的农用地等别调整法.表明农用地分等是确定征地价格补偿的重要因素．对用等别调整法划定的区片级别与最终确定的征地区片级别进行相关性分析，结果表明，两者呈高度正相关，因此农用地等别调整法可以作为划定征地区片级别的一种方法.     

浅谈陆域典型地区“三线一单”优先保护管控单元划定

以陆域典型地区为对象，基于“三线一单”管控单元划定基本规则，针对优先保护管控单元划定具体方法进行研究。“三线一单”优先保护管控单元是综合性的管控单元，由涉及的生态、水、大气、土壤环境优先保护区叠加而成。本研究首先从生态、水、大气、土壤等环境要素优先保护区的划分方法开展论述，进而探讨了优先保护管控单元的划定方法。“三线一单”优先保护管控单元划定的探讨有利于支撑地方“三线一单”成果的编制和应用，有利于指导相关行政部门管理国土空间，规范开发建设行为，对区域空间开发和生态环境保护具有重大意义。     

内蒙古在基本草原划定中面临的问题及其对策

内蒙古在基本草原划定过程中存在着经费难以落实、部门之间的利益冲突日显突出等问题。提出了建立草原保护红线推进机制、草原保护红线划定管理机制;健全草原保护红线划定的保障机制,强化草原生态监测与评估机制,以及尽快构建草原牧区可持续发展模式等在全国开展草原保护红线划定的对策建议。     

浅谈贵州省林场和新昌煤矿采掘活动影响技术鉴定

对煤矿采掘活动技术鉴定是一项复杂工作：通过对煤矿矿区及开采影响范围内山体裂缝、地面塌陷、村民房屋开裂等地质灾害与采煤活动的关系进行现状责任鉴定，并对受该地质灾害威胁的区域进行划定，通过对调查区进行地质灾害调查，查明地质灾害形成原因，明确责任，对受该地质灾害的区域进行划定，并提出防治措施建议。     

颜色标记对鲫幼鱼个性的影响

【目的】考察颜色标记对鲫(Carassiu sauratus)幼鱼个性的影响及颜色保留时间。【方法】在(25.0±0.2) ℃实验室条件下，将30尾实验鱼随机分为对照组和标记组，测定不同时间实验鱼的勇敢性、活跃性和好斗性，并在实验末期观察颜色掉落情况。【结果】1) 对照组和标记组勇敢性的潜伏时间随测定次数的增加呈下降趋势(p<0.05)，但标记组和对照组在测定Ⅰ（颜色标记前）的潜伏时间与测定Ⅱ（颜色标记后）均无统计学意义上的差异。2) 标记组活跃性(如游泳速度、运动时间比及运动总距离)在3次测定间均无统计学意义上的差异，但有趣的是对照组活跃性的游泳速度随测定次数的增加呈下降趋势，该组的运动时间比及运动总路程却呈增加趋势(p<0.05)。3) 标记组和对照组好斗性如警告次数、追随次数、冲咬次数在3次测定间均无统计学意义上的差异。4) 鲫幼鱼的活跃性和好斗性在本实验中保持较高的重复性(p<0.001)，但勇敢性在整个实验中重复性较差；鲫幼鱼在整个实验过程中标记的颜色掉落较少。【结论】颜色标记对鲫幼鱼的勇敢性、活跃性和好斗性均无明显影响。     

提高女生铅球成绩的教学尝试

针对铅球项目的特点，通过采用辅助练习、划定目标、分层编组等教学措施对高校女生的铅球教学进行尝试．     

3S技术在基本农田划定中的应用

该文以该研究者多年从事GIS相关工作的经验,以宾阳县基本农田划定为实例,介绍宾阳县基本农田划定的意义、原则和要求,探讨3S技术在宾阳县基本农田划定的工作流程,以便通过该次基该农田划定将规划基本农田保护区逐图斑落实到地块,确定基本农田地块的地类、数量、质量等级以及片(块)编号等信息,落实责任人,对基本农田正真起到保护作用。     

机械开关抖动次数的测定

在各种实际电路中，机械开关的抖动常常会引起误触发，而导致了电路的错误动作。本文给出了电路，用来具体测定机械开关的抖动次数。     

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.     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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

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