超强磁场下的相对论电子

在以前工作的基础上,推导出超强磁场下简并的、相对论的电子压强P。的普遍表达式：讨论了电子的朗道能级量子化;探索了量子电动力学效应（QED）对中子压强占主导的理想的n-P-e气体系统的影响。主要结论包括：Pe与磁场强度B、物质密度P及电子丰度L有关;磁场越强,电子压强越大;增加的压强是由高值的电子费米能引起的;在超强磁场下,磁星内部总压强是各向异性的;如果考虑到各向异性的总压强,磁星可能是一种更致密、形变后类似于椭球状的中子星;如果考虑到磁场能对状态方程的正能量的贡献,相对于普通射电脉冲星,磁星的质量可能更大些。     

超强磁场下的相对论电子

在以前工作的基础上,推导出超强磁场下简并的、相对论的电子压强P e的普遍表达式;讨论了电子的朗道能级量子化;探索了量子电动力学效应(QED)对中子压强占主导的理想的n-p-e气体系统的影响。主要结论包括:P e与磁场强度B、物质密度ρ及电子丰度Y e有关;磁场越强,电子压强越大;增加的压强是由高值的电子费米能引起的;在超强磁场下,磁星内部总压强是各向异性的;如果考虑到各向异性的总压强,磁星可能是一种更致密、形变后类似于椭球状的中子星;如果考虑到磁场能对状态方程的正能量的贡献,相对于普通射电脉冲星,磁星的质量可能更大些。     

In vitro study of neuroendocrine regulation over the testicular development in mud crabs Scylla serrata

1 INTRODUCTION Ovarian development of female crustaceans is under the direct regulations of two neurohormones: gonad-inhibiting hormone (GIH) secreted by optic ganglia and gonad-stimulating hormone (GSH) se- creted by brain and thoracic ganglia (Fingerman…     

咱的”后勤110”——记南阳市国土资源局办公室职工赵东

他,不善言辞,默默无闻,干起活来有一股“拼命三郎”的冲劲儿。1995年到南阳市国土资源局办公室从事后勤工作12年来,他先后被评为“优秀     

坚持教学改革,提高马列理论课教育质量——开设中国革命史的体会

党的十一届三中全会以来,改革的号角越吹越响,到今天已经成为时代的主题,渗透到国家生活的各个方面,与每个人的工作紧密联系在一起。作为一名教师,如何从我做起,积极将改革引入自己的教学活动,把教书和育人结合起来,为造就一代新人服务,但不能不是一项光荣而艰巨的任务。     

西成铅锌矿田东部地区电法找矿初步效果

引言西成铅锌矿田东部地区,已探明的大型矿床有三处,中、小型矿床多处,矿(化)点数十个,成为我国重要有色金属基地之一.矿床属沉积变质层控类型,产于中泥盆统碳酸盐岩或碎屑岩中.矿床矿石物质成分简单,并有含量不等的黄铁矿.矿床有的与含硅、含碳灰岩有很密切的关     

豫北地区春季冷锋大风预报研究

本文分析形成开封、郑州、新乡地区大风的地形条伴,讨论了气压梯度、低层锋区和乱流交换对风力的影响,以及锋前流场与锋后风速间的关系。在此基础上,按照冷空气活动的路径和形势特点将豫北地区春季冷锋大风,分成了W,N,E三主型以及若干副型。然后重点研究了各型大风的特征、形势演变过程和大风的预报方法。本预报方法于1964年3—5月在郑州地区进行了实际验证,其预报准确率为:W型87.5％,N型91.7％,E型40％。     

A scheme for estimating tropical cyclone intensity using AMSU-A data

Brightness temperature anomalies measured by the Advanced Microwave Sounding Unit （AMSU） on the National Oceanic and Atmospheric Administration （NOAA） polar-orbiting series are suited to estimate tropical cyclone （TC） intensity by virtue of their ability to assess changes in tropospheric warm core struc-ture in the presence of clouds. Analysis of the measurements from different satellites shows that the variable horizontal resolution of the instrument has significant effects on the observed brightness temperature anoma-lies. With the aim to decrease these effects on TC intensity estimation more easily and effectively, a new simple correction algorithm, which is related to the product of the brightness temperature gradient near the TC center and the size of the field-of-view （FOV） observing the TC center, is proposed to modify the observed anomalies. Without other measurements, the comparison shows that the performance of the new algorithm is better than that of the traditional, physically-based algorithm. Furthermore, based on the correction algorithm, a new scheme, in which the brightness temperature anomalies at 31.4 GHz and 89 GHz accounting for precipitation effects are directly used as the predictors with those at 54.94 GHz and 55.5 GHz, is developed to estimate TC intensity in the western North Pacific basin. The collocated AMSU-A observations from NOAA-16 with the best track （BT） intensity data from the Japan Meteorological Agency （JMA） in 2002-2003 and in 2004 are used respectively to develop and validate regression coefficients. For the independent validation dataset, the scheme yields 8.4 hPa of the root mean square error and 6.6 hPa of the mean absolute error. For the 81 collocated cases in the western North Pacific basin and for the 24 collocated cases in the Atlantic basin, compared to the BT data, the standard deviations of the estimation differences of the results are 15% and 11% less than those of the CIMSS （Cooperative Institute for Meteorological Satellite Studies, Univ