创建自己的化学Word模板

一直梦想着能利用计算机直接输入化学信息。经过努力,我利用Word提供的“自动更正”功能,创建出自己的化学Word模板,实现了这一梦想。做到了在Word文档中,仅用拼音字头便可轻松输入常见物质的化学式、结构式、电子式、核素符号、离子符号、基团符号、反应条件及连接符号、原子结构示意图、化学方程式、离子方程式、甚至实验仪器和实验装置图等。如果使用该模板并在“拼音加加”等输人法的中文状态下工作,还可以在不切换中、英文状态的下,达到中文和化学信息有选择的任意输人,提高了办公效率。下面简要介绍该模板的建立方法。     

更正一道模拟题的参考答案

2000年6月某地编制了如下一道模拟题。     

勘误

本刊2012年第41卷第3期《轮廓波变换原理及其构造方法》(作者:郭蔚,李婷;页码:266-275)一文中,部分图片印刷有误:(1)第267页图2应更正为:(2)第269页图5应更正为:(3)第270页图9(b)应更正为:     

一点更正

在文[1]中，由于笔者疏忽，在例3解答的结论中出现了一点失误，现更正如下：例1（2008年江苏卷第13题）若AB=2，AC=√2BC，则S△ABC的最大值是（ ）。     

Two-Photon Exchange Corrections to Single Spin Asymmetry of Neutron and 3He

In a simple hadronic model, the two-photon exchange contributions tothe single spin asymmetries for the nucleon and the ³He are estimated. The results show that the elastic contributions of two-photon exchange to the single spin asymmetries for the nucleon are rather small while those for the ³He are relativelylarge. Besides the strong angular dependence, the two-photon contributions to the single spin asymmetry for the ³He are very sensitive to the momentum transfer.     

Symmetry solutions of a nonlinear elastic wave equation with third-order anharmonic corrections

Lie symmetry method is applied to analyze a nonlinear elastic wave equation for longitudinal deformations with third-order anharmonic corrections to the elastic energy. Symmetry algebra is found and reductions to second-order ordinary differential equations （ODEs） are obtained through invariance under different symmetries. The reduced ODEs are further analyzed to obtain several exact solutions in an explicit form. It was observed in the literature that anharmonic corrections generally lead to solutions with time-dependent singularities in finite times singularities, we also obtain solutions which Along with solutions with time-dependent do not exhibit time-dependent singularities.     

物理就在我们身边——巧用乒乓球再现物理规律

物理是一门以实验为基础的学科,在教学过程中,教师往往需随时做一些实验来辅助讲授有关知识,帮助学生理解.在给学生解答疑难,更正错误,解释现象,分析题意时更是如此.     

Charged Randall-Sundrum Braneworld Type II with Higher Order Curvature Corrections from Superstring Arguments and Dominated by Quintessence

We discuss a new class of RSII braneworld cosmology exhibiting accelerated expansion and dominated by quintessence. It is explicitly demonstrated that the universe expansion history （transition from inflation to deceleration epoch to acceleration and effective quintessence era） may naturally occur in such unified theory for some classes of inverse scalar potentials. Besides a decaying effective cosmological constant, the model incorporates an increasing black hole mass, an increasing Maxwellian electrical charge with cosmic time and a time-dependent brahe tension. The cosmological model exhibits several features of cosmological and astrophysical interest for both the early and late universe consistent with recent observations, in particular the ones concerned with the gravitational constants, black holes masses and charges and variation of the gauge coupling parameters with cosmic time. One interesting mark of the constructed model concerns the fact that a black hole mass surrounded by quintessence energy may increase with time even if the horizon disappears.     

更正说明

因编辑工作失误,本刊2013年第34卷第5期第828～837页发表的文章"Research,development,and application ofamorphous nickel alloy catalysts prepared by melt-quenching(急冷非晶态镍合金催化剂的研究开发和工业应用)"(作者:宗保宁,慕旭宏,张晓昕,孟祥堃,乔明华)中第829页图1有误,正确的图及图题如下.特此更正并致歉.