青春其性梦的发生现状与分析

对１３１７名青春期中学生的调查表明，他们瓣性梦发生率为４８．３％，男性显著高于女性。发现大约有１０％和２％－３％的人对性梦分别存在感觉和认识上的心理压抑，应该加强对他们的青春期教育。     

（Ba_（1－x）Nd_x）TiO_3系陶瓷的电性能

研究了不同Ｎｄ３＋浓度（０．１ｍｏｌ％～２ｍｏｌ％）掺杂的ＢａＴｉＯ３陶瓷的电性能．结果表明，当Ｎｄ３＋浓度为０．１ｍｏｌ％～０．２ｍｏｌ％时，轻度Ｎｄ３＋掺杂的ＢａＴｉＯ３陶瓷是半导性，而当Ｎｄ３＋为０．６ｍｏｌ％～２ｍｏｌ％时呈绝缘性．ＢａＴｉＯ３陶瓷室温下的体电阻车ρＶ随Ｎｄ３＋浓度的变化呈Ｕ型特性曲线，当Ｎｄ３＋＝０．１５ｍｏｌ％时材料具有最低的ρＶ和最佳的正温系数（ＰＴＣＲ）效应，相应于最大的平均晶粒尺寸ＡＧＳ和介电常数ε。随着Ｎｄ３＋浓度的增加．材料的ε和居里常数Ｃ下降，同时ε与Ｃ值密切相关．ＳＥＭ照片显示了Ｎｄ３＋含量对材料晶粒尺寸的强烈影响．此外，还分析了ＺｒＯ２对（Ｂａ１－ｘＮｄｘ）ＴｉＯ３系陶瓷电性能的影响．     

学校青春期教育探讨

处于青春期的少男少女，难免会对异性产生艨胧的情愫，性对他们来说显得新奇而又神秘，往往会在内心掀起情感的波澜。与此同时现代社会的开放和信息流在拓宽青少年视野的同时，也给他们带去不良的甚至有害身心的文化垃圾，比如色情信息的泛滥。青少年尚未牢固树立正确的人生观、恋爱观，易于受外界的干扰和影响。如这个时期未能给予及时正确的引导。往往会放大孩子在这方面的“成长的烦恼”，甚至陷入误区，给学习和生活造成不良影响。家庭、学校、社会是未成年人青春期教育的三个主要课堂。青春期的学生。对家长而言是孩子，对老师而言是学生，对社会而言是未来的接班人。学生青春期教育的出路正在于构建家庭．学校．社会三位一体的心理网络天地。在这一育人体系中社会要统筹领导，学校要积极引导，家庭要科学疏导。本文就学校在青春期教育方面所存在的问题及努力方向谈谈粗浅的看法，旨在抛砖引玉。     

浅谈中学生物教学中的青春期性教育

青春期的中学生由于生活水平的提高,在生理上普遍存在着早熟,借助生物学科特点,及时对他们进行青春期的性教育,性道德教育和性法律教育是青春期教育的核心,使学生安全健康地渡过青春期.提高他们性道德的观念,培养他们良好的道德品质和坚强意志,显得更为重要.     

（Ba1—xNdx）TiO3系陶瓷的电性能

研究了不同Ｎｄ＾３＾＋浓度（０．１ｍｏｌ％－２ｍｏｌ％）掺杂的ＢａＴｉＯ３陶瓷的电性能。结果表明，当Ｎｄ＾３＾＋逍度为０．１ｍｏｌ％－０．２ｍｏｌ％时，轻度Ｎｄ＾３＾＋掺杂的ＢａＴｉＯ３陶瓷呈半导性，而当Ｎｄ＾３＾＋为０．６ｍｏｌ％－２ｍｏｌ％时呈绝缘性，ＢａＴｉＯ３陶恣室温下的体电阻率ρｖ随Ｎｄ＾３＾＋浓度的变化呈Ｕ型特性曲线，当Ｎｄ＾３＾＋＝０．１５ｍｏｌ％时材料具有最低的ρｖ和最佳的正温系数     

原发性高血压并发无症状性脑梗塞的临床重要性

目的：探讨原发性高血压不同时期无症状性脑梗塞的临床重要性及其意义。方法？：对８１０例原发怀高血压患常规行脑ＣＴ扫描和脑ＭＲＩ，共分成５个观察组；临界组、Ⅰ期组、Ⅱ期组、Ⅲ期组和老年同血压组。结果：无症状性脑梗塞发生率在５个实验组分别为０％、１１．３％、３６．０％、４５．１％和６９．３％。结论：随着高血压分期级别的增加，无症状性脑梗塞有增加的趋势，表明高血压是引直无症状性脑梗塞主要原因，应引起临床     

植壮素对烟草花叶病的防效及其增产效应

用多功能植物杀菌防病促长剂植壮素进行防治烟草花叶病的试验，结果表明：植壮素对烟草花叶病有较好的防治效果，防效率为１９．１％－５１．３％；烟草植株高度，单株叶片数和叶片鲁重分别增加７．９％－３６．９％，１３．７－３７．８％和１４．３％－３５．７％，烟草增产６．４％－２４．３％，烟叶品质提高，每公亩增加收入３２２．０－１２３７．３元。     

厚度对Fe－3％Si二次再结晶的影响

厚度对Ｆｅ－３％Ｓｉ二次再结晶的影响最近日本的研究员以Ｍ；Ｉｓ和ＡＩＮ作为抑制剂研究了最终厚度（０．６０～０．１８ｕｒｎ）对Ｆｅ～３％Ｓｔ二次再结晶的影响。他们发现，当０．６０ｎｌｍ厚的试样于终退火时在氢气中进行加热时，会发生完全的二次再结晶，但主〕...     

NaCI，Na_2SO_4和Na_2CO_3对小麦生长，脯氨酸及Na~＋，K~＋含量的比较研究

在５０、１００和２００ｍｍｏｌ／ｌ下，研究了ＮａＣＩ、Ｎａ２ＳＯ４和Ｎａ２ＣＯ３对小麦高生长、生物量生长、脯氨酸及Ｎａ＋，Ｋ＋含量的影响。ＮａＣＩ处理使高度下降８．８％～３５．４％、而Ｎａ２ＳＯ４和Ｎａ２ＣＯ３分别为８．８％～７７．９％和５３．１％～１００．０％。ＮａＣＩ处理使鲜重和干重分别降低１４．３％～４２．９％和６．１％～３６．７％，而Ｎａ２ＳＯ４处理分别为１４．３％～６４．３％和７．２％～５８．９％，Ｎａ２ＣＯ３处理分别为５０．０％～７４．１％和４８．３％～７２．８％。在ＮａＣＩ、Ｎａ２ＳＯ４和Ｎａ２ＣＯ３处理下，脯氨酸含量分别增加０．０％～６６．７％、０．０％～３３．３％和６６．７％～１００．０％。Ｎａ＋／Ｋ＋分别提高２．５～１１．９、３．６～１１４．１和３５．１～１５６．６倍。结果表明：Ｎａ２ＣＯ３的胁迫比Ｎａ２ＳＯ４强，而Ｎａ２ＳＯ４的胁迫影响又比ＮａＣｌ强     

辽河坳陷边台变质岩潜山油藏裂缝分布特征

边台变质岩潜山油藏为裂缝性块状高凝油油藏，其裂缝主要为新生代形成的与伸展作用有关的构造裂缝，且以中高角度张性裂缝为主，主要发育有北北东－北东向、北西向和近东西向三组，其发育程度依次由强变弱．该区宏观裂缝的平均孔隙度为０．７２％，平均渗透率为８０．５×１０－３～３６０．８×１０－３μｍ２；微观裂缝的平均孔隙度为２．８２％，平均渗透率为１．４４×１０－３～１１．７７×１０－３μｍ２．反映了边台变质岩潜山的主要储集空间是微观裂缝系统，而对渗流起主要作用的是宏观裂缝系统．     

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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