草酸锂－碳酸锂－水体系25℃相平衡

利用等温溶解法测定了三元体系Ｌｉ２Ｃ２Ｏ４－Ｌｉ２ＣＯ３－Ｈ２Ｏ（２５℃）的溶解度，相平衡图中有三个相区，即ＬｉｈＣＧＯ４、Ｌｉ２ＣＯ３、Ｌｉ２Ｃ２Ｏ４＋Ｌｉ２ＣＯ３。两条单变量曲线，一个共饱点。     

八庙—青山金红石矿床化学成分与成矿关系

本矿床是我国金红石矿床重要的成因及工业类型，为具有特定化学成分的岩石在特定变质条件下形成的。本文通过对大量数据的处理，查明了化学成分与成矿的关系：高Ａｌ２Ｏ３、ＭｇＯ、Ｆｅ２Ｏ３＋ＦｅＯ、Ｋ２Ｏ、Ｐ２Ｏ５、Ｈ２Ｏ＋、ＭｎＯ，低ＳｉＯ２、ＣａＯ、Ｎａ２Ｏ、ＣＯ２、Ｓ等，利于钛富集；高ＴｉＯ２、ＭｇＯ、Ｐ２Ｏ５、Ｓ，低ＳｉＯ２、ＣａＯ、Ｋ２Ｏ、Ａｌ２Ｏ３、Ｆｅ２Ｏ３／ＦｅＯ，利于金红石形成；高Ｓｃ、Ｚｒ、Ｎｉ、Ｚｎ及Ｌａ／Ｙｂ，低Ｙ、Ｎｂ、Ｔｈ、Ｃｄ、Ｂａ、Ｂｅ、ΣＲＥＥ，利于金红石纯度提高。对研究矿床成因及寻找新的同类矿床等有重要意义     

四川石棉独立碲矿床蚀变岩的地质地球化学研究

四川石棉大水沟独立碲矿床堪称世界首例，其矿体两侧的围岩蚀变较窄，且蚀变带与矿脉及未蚀变岩呈清楚而截然的接触关系。主要围岩蚀变为白云石化、白（绢）云母化、云英岩化及电气石化等。这些蚀变作用分别发生于１７７．７～１６５．１Ｍａ和９１．７１～８０．１９Ｍａ。蚀变作用过程中ＳｉＯ２大量析出，Ａｌ２Ｏ３、ＴｉＯ２、ＣａＯ、ＭｇＯ、Ｋ２Ｏ、Ｈ２Ｏ、ＣＯ２、Ｆｅ２Ｏ３、ＭｎＯ则有不同程度地带入。与此同时，ＲＥＥ在此过程中包集体迁出，Ｔｅ、Ｂｉ、ＡＳ等元素的含量则决定于蚀变作用及其强度，而与原岩无关。     

ＣＯ２ 海洋封存的发展现状

全球气候变暖带来的危害促使国际社会在 ＣＯ２ 减排方面达成了共识,近年来备受关注的碳捕集与封存（ｃａｒｂｏｎｃａｐｔｕｒｅ
ａｎｄｓｔｏｒａｇｅ,简称 ＣＣＳ）技术作为 ＣＯ２ 减排的重要手段,正处于快速发展阶段。ＣＯ２ 海洋封存是 ＣＣＳ技术中实现 ＣＯ２ 减排的一项最具发展潜力的方法,认识其发展现状对于进一步研究 ＣＯ２ 封存具有重要参考价值。 ＣＯ２ 海洋封存的发展现状作了具体分析,阐述了 ＣＯ２ 海洋封存的方法,包括海洋水柱封存、海洋沉积物封存、ＣＯ２ 置换天然气水合物封存和海洋增肥４种方法。指明ＣＯ２ 海洋封存现阶段存在封存成本极高、存在泄露风险、政策法规缺失和公众认知度低４个问题。建议应从完善法律法规、加强国际合作、重视监测技术、提高公众认知４个方面做好 ＣＯ２ 海洋封存下一步的研究与实践工作。      

过氧化钙对尖吻鲈,罗非鱼的增氧试验

系统试验了在过滤海水中加入不同浓度的ＣａＯ２后ＤＯ、ｐＨ的变化规律，以及不同浓度的ＣａＯ２对尖吻鲈、罗非鱼的饲养及运输的增氧效果。结果表明；加入ＣａＯ２ １５×１０＾－６￣２０×１０＾－６，能很快增加水中ＤＯ，对抢救尖吻鲈鱼苗浮头有较好效果，在平时饲养中施ＣａＯ２ １０×１０＾－６￣２０×１０＾－６增氧效果也明显。在罗非鱼高密度暂养或运输中，施入ＣａＯ２ ４５×１０＾－６￣７５×１０＾－６对增氧，     

黄土中古土壤双层淀积研究

本文确定了黄土中古土壤有四种双层淀积类型。第一和第二种是由两层ＣａＣＯ３结核构成的，第三种是由ＣａＣＯ３和ＣａＳＯ４构成的，第四种是由ＣａＣＯ３与Ａｌ２Ｏ３、Ｆｅ２Ｏ３构成的。根据ＣａＣＯ３淀积层成因分析得知，西安附近第一层古土壤具二元发生特点。该层古土壤上部的ＣａＣＯ３淀积层代表碱性土壤发育时期。下部的ＣａＣＯ３淀积层代表中酸性土壤发育时期。因为有些古土壤发育时出现过气候变化，所以具ＣａＣＯ３淀积层的古土壤不一定是碱性的。具ＣａＣＯ３与Ｆｅ２Ｏ３·Ａｌ２Ｏ３构成的双层淀积是酸性土壤的标志。     

D_（001）树脂在酸性硫脲溶液中吸附、分离金银研究

本文研究了Ｄ_００１大孔阳离子强酸树脂从Ｈ_２ＳＯ_４－ＣＳ（ＮＨ_２）_２溶液中，富集及分离Ａｕ（Ｉ）、Ａｇ（Ｉ）的性能。表明在ｐＨ＝２．０左右，树脂对Ａｕ（Ｔｕ）￣＋_２、Ａｇ（Ｔｕ）￣＋_２（Ｔｕ＝硫脲）有良好的吸附性能，Ａｕ和Ａｇ的吸附容量分别为６１．１８ｍｇ／ｇ－Ｒｅｓｉｎ和９９．１１ｍｇ／ｇ—Ｒｅｓｉｎ。负载柱上的Ａｕ、Ａｇ可分别用ＮａＣＮ—ＮａＯＨ和Ｈ_３ＢＯ_３－ＮａＯＨ－Ｎａ_２Ｓ_２Ｏ_３定量洗脱。可进行一定程度的Ａｕ、Ａｇ分离。     

中文WINDOWS 3.2五笔编码与UCDOS五笔编码格式转换

本文分析了中文ＷＩＮＤＯＷＳ３．２五笔型编码与ＵＣＤＯＳ五笔型编码格式的差异,经过格式的修改,转换为符合中文ＷＩＮＤＯＷＳ要求的编码文本文件,为ＷＩＮＤＯＷＳ３．２增加了五笔型输入法。     

秦岭东段金红石矿床成因类型地球化学特征及分布规律

秦岭东段金红石矿床分为区域变质、岩浆、热液、风化及沉积五大成因类型。正变质型矿床,常量元素与钙碱性—碱性、基性岩浆岩接近,ＴｉＯ２与ＳｉＯ２呈负相关;稀土元素分布模式由轻稀土富集型渐变为亏损型。副变质型矿床,常量元素与粘土岩接近,ＴｉＯ２与ＳｉＯ２、ΣＲＥＥ等呈正相关;与ＣａＯ、ＭｇＯ等呈负相关。岩浆型矿床,常量元素与超基性岩接近,ＴｉＯ２与Ａｌ２Ｏ３、（Ｌａ／Ｌｕ）Ｎ等呈正相关。热液脉型矿床稀土元素分布模式与母矿床相同。矿床沿深大断裂分布,均位于变质岩区。成矿时代为晚元古代、泥盆纪及第四纪。正变质型矿床一般共生有风化、沉积及热液脉型矿床。成矿机制主要为扬子板块向北两次较大规模的俯冲所致。     

封闭系统中CaCO_3在天然水中溶解或沉淀的水化学后果

文章在计算水溶液化学组份平衡分布及其ｐＨ值的基础上，分析和讨论了封闭系统中ＣａＣＯ３溶解或沉淀所引起的水化学后果，并依据计算数据和借助作图的办法得出了如下结论，即ＣａＣＯ３溶解会使水溶液ｐＨ值增大，Ｈ２ＣＯ３含量减少；相反，ＣａＣＯ３沉淀会使水溶液ｐＨ值减小，Ｈ２ＣＯ３含量增多。     

乌苏里江唇耗氧率和窒息点的初步研究

进行不同温度和不同规格人工养殖的乌苏里江唇(Hemibarbus labeo)耗氧量(MO2)、耗氧率(WO2)和窒息点(SO2)的初步测定。结果表明:水温16~28℃范围内,随着水温的升高,耗氧率、耗氧量和窒息点都表现出增大的变化趋势。温度和耗氧率的回归方程:1龄鱼体重11 g的为WO2=0.0142T-0.0863(R2=0.9617),2龄鱼体重60 g的为WO2=0.0138T-0.1121(R2=0.97);温度和窒息点的回归方程:1龄鱼体重8 g的为SO2=0.0298T-0.1891(R2=0.977 8),2龄鱼体重40 g的为SO2=0.048 8T-0.402 5(R2=0.999 7)。体重20~100 g范围内,水温25℃时,随着体重规格的增大,耗氧量逐渐升高,耗氧率逐渐减小。体重和耗氧率的回归方程为WO2=0.7825W-0.2898(R2=0.947 4),体重和耗氧量的回归方程为MO2=0.7837W0.7097(R2=0.991 6)。唇鱼的昼夜耗氧率(水温25℃,体重72 g)有一定的变化趋势,早间4~10时耗氧率较高,平均在0.332±0.046 mg/(g.h),午间11~19时中等,在0.287±0.030 mg/(g.h),晚间20~3时较低,在0.251±0.029 mg/(g.h)。     

北斗三号新信号B2a和B2（B2a+b）质量分析及星座几何性能评估

在最新的能接收到北斗三号新信号B2a及B2（B2a+b）的MGEX测站数据基础上，分析BDS-3信号的载噪比、多路径及卫星的三维位置精度因子（PDOP）。结果表明，与GPS相比，BDS的载噪比B2（B2a+b）>B2a≈L5>B3≈B2b>B1≈L1>L2，多路径误差B2(B2a+b)相似文献   

胶东玲珑矿田石英脉型金矿床中流体包裹体特征研究

玲珑矿田含有两种类型金矿床,一是蚀变岩型金矿床,二是石英脉型金矿床。该文重点研究玲珑金矿田西山矿区石英脉型金矿床中流体包裹体的特征。石英脉型金矿床分布在玲珑帚状构造之中,含金石英脉受"帚状构造"的断裂和节理控制,有300余条。流体包裹体显微观察研究表明,玲珑石英脉型金矿新鲜花岗岩和钾化花岗岩主要含有H2O包裹体,其次有少量H2O-CO2包裹体;(黄铁)绢英岩通常含较粗粒石英集合体,石英中有丰富的H2O,特别是H2O-CO2包裹体;金矿体(含金石英脉)含有明显数量的H2O-CO2包裹体;特别是存在较大的三相H2O-CO2包裹体。不同期次(世代)石英中H2O和H2O-CO2包裹体的大小、形态、相对含量和丰度变化较大。     

Occurrence of Two Distinct Types of Tissue Inhibitors of Metallo-proteinases-2 in Fugu rubripes

In this study, genes of two distinct tissue inhibitors of metalloproteinases-2 （TIMP-2） from Japanese puffer fish Fugu rubripes, Fugu TIMP-2a and TIMP-2b, were cloned. The open reading frames of Fugu TIMP-2a and TIMP-2b cDNAs are composed of 660 and 657 nucleotides and 220 and 219 amino acids, respectively. Both Fugu TIMP-2s contain 12 cysteine residues, which might form six disulfide bonds as in other animals＇ TIMP-2s. Reverse-transcribed polymerase chain reaction analysis showed the mRNAs of Fugu TIMP-2a and TIMP-2b to be expressed in some tissues examined with different expression patterns. These findings suggest that the two distinct Fugu TIMP-2s might perform different functions in Fugu tissues.     

文昌鱼对几种环境因子及污染物的耐受极限初步研究

<正>文昌鱼(Branchiostoma belcheri)隶属脊索动物门头索动物亚门,是全世界现存动物中与脊椎动物关系最近的一类非脊椎动物[1],被称为生物进化的“活化石”。它营养丰富,干品蛋白质含量约达70%左右,还含有较高的磷和碘,脂肪含量低,具有较高的     

Composition and distribution of fish species collected during the fourth Chinese National Arctic Research Expedition in 2010

There are awareness and concerns caused by the decreasing sea ice coverage around the Arctic and Antarctic due to effects of climate change. Emphasis in this study was on rapid changes in Arctic sea ice coverage and its impacts on the marine ecology during the fourth Chinese National Arctic Research Expedition in 2010. Our purpose was to establish a baseline of Arctic fish compositions, and consequent effects of climate change on the fish community and biogeography. Fish specimens were col- lected using a multinet middle-water trawl, French-type beam trawl, otter trawl, and triangular bottom trawl. In total, 36 tows were carried out along the shelf of the Bering Sea, Bering Strait, and Chukchi Sea in the Arctic Ocean. in total, 41 fish species belonging to 14 families in 7 orders were collected during the expedition. Among them, the Scorpaeniformes, including 17 species, accounted for almost one third of the total number （34.8%）, followed by 14 species of the Perciformes （27.0%）, 5 species of the Pleuronecti- formes （22.3%）, and 2 species of the Gadiformes （15.4%）. The top 6 most abundant species were Hippoglossoides robustus, Bore- gadus saida, Myoxocephalus scorpius, Lumpenus fabricii, Artediellus scaber, and Gymnoeanthus trieuspis. Abundant species var- ied according to the different fishing methods; numbers of families and species recorded did not differ with the various fishing methods; species and abundances decreased with depth and latitude; and species extending over their known geographic ranges were observed during the expedition. Station information, species list, and color photographs of all fishes are provided.     

Content analysis of documents using neural networks： A study of Antarctic science research articles published in international journals

Content analysis of scientific papers emanating from Antarctic science research during the 25 years period （1980-- 2004） has been carried out using neural network based algorithm-CATPAC. A total of 10 942 research articles published in Science Citation Indexed （SCI） journals were used for the study. Normalized co-word matrix from 35 most-used significant words was used to study the semantic association between the words. Structural Equivalence blocks were constructed from these 35 most-used words. Four-block model solution was found to be optimum. The density table was dichotomized using the mean density of the table to derive the binary matrix, which was used to construct the network map. Network maps represent the thematic character of the blocks. The blocks showed preferred connection in establishing semantic relationship with the blocks, characterizing thematic composition of Antarctic science research. The analysis has provided an analytical framework for carrying out studies on the con- tent of scientific articles. The paper has shown the utility of co-word analysis in highlighting the important areas of research in Antarctic science.     

Evaluation of reanalysis and satellite-based sea surface winds using in situ measurements from Chinese Antarctic Expeditions

Sea surface winds from reanalysis （NCEP-2 and ERA-40 datasets） and satellite-based products （QuikSCAT and NCDC blended sea winds） are evaluated using in situ ship measurements from the Chinese National Antarctic Research Expeditions （CH1NAREs） from 1989 through 2006, with emphasis on the Southern Ocean （south of 45°S）. Compared with ship observations, the reanalysis winds have a positive mean bias （0.32 m·s-1 for NCEP-2 and 0.13 m·s-1 for ERA-40）, and this bias is more pronounced in the Southern Ocean （0.57 m·s-1 and 0.45 m·s-1, respectively）. However, mean biases are negative in the tropics and subtropics. The satellite-based winds also show positive mean biases, larger than those of the reanalysis data. All four wind products overestimate ship wind speed for weak winds （〈4 m·s-1） but underestimate for strong winds （〉10 m·s-1）. Differences between the reanalysis and satellite winds are examined to identify regions with large discrepancies.     

负载型纳米TiO_2光催化杀灭溶藻弧菌的研究

采用平均粒径约5nm,主要结构为锐钛矿型的纳米TiO2光催化剂,以泡沫型复合镍板为载体对纳米TiO2进行固定,并对固定后的纳米TiO2杀灭溶藻弧菌的能力进行了研究。结果表明:利用高压汞灯作为光源,以泡沫型复合镍板为载体的纳米TiO2对溶藻弧菌具有较强的杀灭能力;极少量过氧化氢的加入加快了纳米TiO2的杀菌速度;因此,负载型纳米TiO2在水产病害防治方面具有广阔的应用前景。     

Interaction between sea ice/iceberg and ship structures: A review

For ship structural design and good maneuverability in an ice-covered sea, the local and global load of ice cover on ships should be well understood. This paper reviews the extensive work done on ice loads on ships, including： （a） Ice pressure and local load determination based on field and model tests; （b） Global ice loads on ships from full-scale field observations, model tests and numerical models under different ice conditions （level ice and pack ice） and ship operations （maneuvering and mooring）. Spe- cial attention is paid to the discrete element simulation of global ice loads on ships; and （c） Analytical solutions and numerical models of impact loads of icebergs on ships for polar navigation. Finally, research potential in these areas is discussed.