电感耦合等离子体质谱原理和应用     

李冰 《岩矿测试》2005,24(4):302-302

本书全面介绍了电感耦合等离子体质谱（ICP—MS）的仪器结构和基本原理，以四极杆ICP—MS为主，同时对近年来发展的其他类型的ICP—MS仪器进行了简要介绍。以地质应用为主，介绍了几种痕量超痕量元素分析方法及应用。全书共分12章：绪论，包括ICP—MS的起源、现状与发展趋势；ICP—OMS仪器结构和基本原理；ICP—MS分析性能与基本概念；扇形磁场等离子体质谱仪；飞行时间等离子体质谱；  相似文献   

故宫国宝万里大迁徙     

许凯  佐远波 《地图》2006,(1):34-41

1931年日本帝国主义悍 然发动“九一八”事变,并 迅速占领了东北三省,平津 告急,华北危机!故宫文物 又一次面临战争严酷的考验。 国难当头,新生的故宫博物 院面临重大抉择,故宫国宝 将何去何从呢？  相似文献   

Effect of Dietary Phosphorus on the Growth and Body Components of Juvenile Synechogobius hasta     

LUO Zhi）  ）*  LI Xiaodong）  GONG Shiyuan）  XI Wenqiu）    LI Yali）） Key Lab of Agricultural Animal Genetics  Breeding  Reproduction of Chinese Ministry of Education  Fishery College  Huazhong Agricultural University  Wuhan  P. R. China ） Postdoctoral Research Base  Panjin Guanghe Fishery Co. Ltd.  Panjin  P. R. China 《中国海洋大学学报(英文版)》2009,8(1)

The effect of dietary phosphorus on the growth and body components of juvenile Synechogobius hasta was determined. Different percentages of dietary phosphorus (0.63, 0.77, 0.93, 1.06, 1.22 and 1.36) were tested by feeding the fish (body weight, 15.81 g ± 0.32 g; 20 individuals each group; 3 groups each percentage) at a surplus of 5%–10% above satiation for 35 d. Dietary phosphorus did not significantly affect the specific growth rate, feed intake, feed conversion ratio and protein efficiency rate. Nitrogen ...  相似文献   

Detection of the end point temperature of thermal denatured protein in fish and chicken meat through SDS-PAGE electrophoresis     

GAO Hongwei）  ）*  MAO Mao）  LIANG Chengzhu）  LIN Chao）    XIANG Jianhai）） Institute of Oceanology  Chinese Academy of Sciences  Qingdao  P. R. China ） College of Food Science  Engineering  Ocean University of China  P. R. China ） Sh  ong Entry-Exit Inspection  Quarantine Bureau of P. R. China  P. R. China 《中国海洋大学学报(英文版)》2009,8(1):95-99

Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) was applied in the detection of the end point temperature (EPT) of thermal denatured protein in fish and meat in this study. It was also used in studying the thermal denatured temperature range of proteins in salmon and chicken meat. The results show that the temperature ranges of denatured proteins were from 65 ℃ to 75 ℃ , and these temperature ranges were influenced by the processing methods. Through SDS-PAGE, the features of repeated he...  相似文献   

The Effect of Temperature on Growth and Energy Budget of the Polychaete,Neanthes japonica Izuka     

LIU Yong ）  ）    XIAN Weiwei ）  ） Key Laboratory of Marine Ecology  Environmental Sciences  Institute of Oceanology  Chinese Academy of Sciences  Qingdao  P. R. China ） College of Fisheries  Ocean University of China  Qingdao  P. R. China 《中国海洋大学学报(英文版)》2009,8(2)

Growth and energy budget of the polychaete, Neanthesjaponica, at various temperatures (17, 20, 23, 26 and 29 ℃) were investigated in this study. The growth, as indicated by final dry weight and specific growth rate (SGR), increased with increasing temperature, with the maximum level at 26℃, and then decreased significantly at 29℃. A similar trend was observed in feeding rate, food conversion efficiency (FCE) and apparent digestive rate (ADR). However, no significant differences were detected in ADR among all the temperature treatments. In the pattern of energy allocation, faeces energy was only a small component of energy budget and had little influence on the proportion of food energy allocated to growth. The metabolic energy accounted for a large portion of energy intake for each temperature treatment. The nitrogen excretion was appreciable with changing temperature. The two expendi-ture terms (respiration energy and excretion energy) in energy budget were the major factors influencing the proportion of food en-ergy allocated to growth. These results revealed that temperature affected the growth of N. japonica mainly by influencing feeding rate and FCE. In addition, regression equations describing the relationship between feeding rate, faecal production, SGR, FCE and temperature were obtained. The optimum temperatures for feeding rate, FCE and SGR were estimated at 25.01 ℃, 24.24℃ and 24.73 ℃, respectively, from the regression equations.  相似文献   

矿企减负券发放背后     

陈雪骅  刘舒尹 《国土资源导刊(湖南)》2009,6(3)

2009年以来,湖南省国土资源厅相继出台<关于应对金融危机支持矿业健康发展的通知>、<关于进一步加强地质找矿工作的通知>等文件,全面为矿企减负,另外将推出<湖南省矿产资源开采准入管理办法>,加大矿产资源开采准入规范管理力度.  相似文献   

“双保”博弈——增长VS红线：4万亿投资平衡术     

陈雪华  文峰 《国土资源导刊(湖南)》2009,(5)

在有限的土地总盘子里,如何既保证大量投资工程项目的建设用地,又要落实好严格的耕地红线保护政策？保增长、保红线这二者看似矛盾,其实都箭指同一个节点,即尽量用最少的土地做最多的事情。正在建设中的武广客运专线湖南段,树立了一个因地制宜运作力争实现增长和红线双保险的典范,它足以证明,“双保博弈”并不是你死我活的对立面．从调整局部利益的让利层面多做考虑．我们会发现二者并非难以调和。  相似文献   

黄石：正在流传的夜明珠正在流失的晶体矿     

石枫  秦楼 《国土资源导刊(湖南)》2009,(4)

世界上绝大多数氟产品都以萤石为原料进行生产氰化工的一个重要特点是：不以石油天然气为主要原料,受化石能源影响度很小。全球能源的日趋紧张,却正好为氟化工产业提供了巨大的发展空间和持续的成长机遇。  相似文献   

“地王”频现罪在供地机制？   总被引：1，自引：0，他引：1  

许子枋  李元卓 《国土资源导刊(湖南)》2009,6(12):43-47

导言:地王有罪吗? 每年有关地王的新闻报道总是热度新闻,没有新意的新闻,却总能屡屡被放置在媒体的头条.而且地王一出,必受诟病,必受摧挞,成为常态.如果仔细一想,深觉默然悲哀,默后哑然失笑.  相似文献   

从白沙井到大围山     

童潜明  陈建军 《国土资源导刊(湖南)》2009,6(7):90-91

20世纪70年代,有一些国内的冰川地质研究专家,曾在长沙白沙井以及浏阳河入湘江口处,发现过冰期砾石,并确定它们来自于湘江或者其支流,但找不到砾石的来源.  相似文献