大西洋深处隐藏着地球失去的热量

<正>现在,对于地球变暖出现停滞有了新解释。尽管温室气体在大气层中不断积累,但是地球表面平均气温却在2000年以来保持稳定,原因不得而知。许多科学家相信,答案就是太平洋将大量冷水发送到海面,帮助地球降温。但是发表在《科学》(Science)网站上的研究论文提出,海水温度数据表明大多数失去的热量都储存在大西洋深处。研究者汲取了1970年以来全球数千万浮标、船只的海水温度及盐度的测量数据,涵盖从海面到1500     

《人工晶体学报》参考文献书写规则

根据中华人民共和国国家标准《文后参考文献著录规则》(CG7714-87),本刊的参考文献采用顺序编码制。参考文献著录格式示例(作者3人以上的用缩写符号:et al.等等;中文参考文献需中英文对照书写):1.期刊著者.文献题名[J].刊名,出版年,卷号(期号):页次.例:关铁堂,林景臻,林树坤,等.马来酸氢十八酯晶体生长[J].人工晶体学报,1992,20(1):5.Arnold W A,Wilcox W R,Carlson F,et al.Transport Modes during Crystal Growth in a Centrifuge[J].Journal ofCrystal Growth,1992,119(1-2):24.2.专著著者.书名[M].版本,出版地:出版者,出版年:页次.例:蒋民华.晶体物理[M].济南:山东科学技术出版社,1980:253.Vanbueren HG.Imperfections in Crystals[M].Second Edition,Amsterdam:North-Holland Publishing Co.,1961:291.3.论文集或会议文献著者.文献题名[A...     

Acta Mathematica Sinica English Series：Instructions for Authors

Submission Please type your paper in LaTeX, and e-mail the pdf file. The editorial office will confirm receipt within 3 days. If you do not receive the receipt letter, please send an e-mail to ask. The address is Editorial Board, Acta Mathematica Sinica （English Series）, Institute of Mathematics, Academia Sinica, Zhongguancun, Beijing 100080, China, email： syc@amss.ac.cn.     

纠缠光子拍出“薛定谔猫”悖论照片

正最近,奥地利物理学家设计出一种新奇方法,无需光与拍摄目标相互作用,利用量子效应也能拍出照片。这听起来似乎颠覆了传统物理的成像原理,他们用一个镂空的猫图案进行了实验,虽不是一张同时"要死要活"的猫照片,却是粒子能同时处于两种状态的证明。相关论文发表在近期的《自然》杂志上。据自然网站近日报道,量子     

Small-scale ion flux and magnetic field fluctuations in solar wind, foreshock and magnetosheath

We have continued investigation of waves in the regions of undisturbed solar wind, foreshock and magnetosheath. The analysis of ion flux and magnetic field variations with the time interval 1-240s was performed in the regions above. Very large variation in such a time interval can be considered the common feature of the foreshock and magnetosheath. The results of case and statistical studies showed that the level of relative variations of ion flux and magnetic field magnitude in foreshock is about 3 times larger than in undisturbed solar wind. Variations of these parameters in the magnetosheath topologically connected with the quasi-parallel bow shock are about two times larger than those behind the quasi-perpendicular. We also compared the results from Interball-1 data analysis with those from statistical analysis of cluster magnetic field measurements. The magnetic field variations obtained from the different satellite data coincide with each other very well not only in quality but also in quantity.