涂钨热解石墨管－石墨炉原子吸收法测定天然水中痕量钡

选择涂钨热解石墨管测钡，克服了钡的碳化物形成而提高了方法的灵敏度，采用钙做基体补偿不仅克服钙对测钡的影响，同时也对测钡起增敏作用，结合其它测定条件的优化实现了石墨炉原子吸收法测定天然水中的痕量钡。其线性范围在０～７０μｇ／Ｌ检出限３．３ｐｇ，特征质量为２．９ｐｇ／１％吸收，对５μｇ／ＬＢａ试液测定１１次，其ＲＳＤ为６．９％，加标回收率８９％～１２０％。方法经标样分析验证，结果与标准值相符。     

一种适合定点使用的DTZ型质子旋进磁力仪

系统地介绍了ＤＴＺ系列质子旋进磁力仪的思路和性能特点，通过台站使用认为，ＤＴＺ系列仪器能满足地磁台观测精度的要求，具有实际使用的价值。     

中国地球气候系统模式的发展及其模拟和预估

地球气候系统模式是开展多学科、多圈层集成研究的重要平台,其发展是国际地学领域特别是全球变化领域竞争的前沿。中国的地球气候系统模式研发工作始于20世纪80年代,最近10年得到快速发展。研发格局上已经形成中国科学院、有关部委和高校三足鼎立的局面。文中在简要回顾中国地球气候系统模式早期发展历史的基础上,总结了中国参加第6次耦合模式比较计划的9个地球气候系统模式的技术特点,初步评估了中国4个模式对全球和东亚气候模拟的基本性能,分析了其在4种共享社会经济路径情景下对全球降水与温度的预估变化及其与平衡态气候敏感度的联系。最后,结合国际态势,从发展的角度提出未来中国气候模式研发工作需要加强的8个方向。      

Five new records of Xanthidae (Crustacea: Brachyura) from Hainan Island,China

Five new records of the family Xanthidae are reported from China: Hypocolpus haanii Rathbun, 1909, Neoliomera variolosa (A. Milne-Edwards, 1873), Leptodius aust...     

苏北盆地东部凹陷上白垩统泰州组沉积相*

苏北盆地是在晚白垩世发育起来的箕状断陷盆地。上白垩统泰州组（K₂t）为东部凹陷发育初期形成的一套碎屑岩沉积地层,自下而上总体构成由粗到细的沉积旋回。通过对区内52口探井的录井、测井和岩心资料综合分析,认为泰州组主要发育辫状河三角洲、曲流河三角洲及湖泊相3种沉积相类型,在此基础上又进一步识别出7种亚相和12种微相。泰州组分为两段,泰州组一段沉积早、中期为辫状河三角洲沉积,晚期转变为(曲流河)三角洲沉积;泰州组二段早期为深湖—半深湖沉积,中晚期为浅湖亚相。伴随湖平面的反复升降,表现出明显的多旋回性。研究区泰州组一段表现为典型的退积型三角洲沉积。通过进一步研究泰州组一段各沉积时期沉积相的平面分布及演变特征,指出在梁垛—安丰—李堡一带沉积砂体发育,是油气储集层发育的有利地区。     

Comparison of Nutritional Quality in Fish Maw Product of Croaker Protonibea diacanthus and Perch Lates niloticus

Fish maw(the dried swimbladders of fish) is ranked in the list of the four sea treasures in Chinese cuisine. Fish maw is mainly produced from croaker, which is the most highly priced. However, some of the fish maw being sold as croaker maw are in fact not from croaker, but from the Nile perch Lates niloticus. The present work determined and compared the proximate composition, amino acid and fatty acid composition of croaker Protonibea diacanthus maw and perch L. niloticus maw. The results indicated that both maws were high protein sources and low in fat content. The dominant amino acids in both maws were glycine, proline, glutamic acid, alanine and arginine. These amino acids constituted 66.2% and 66.4% of the total amino acids in P. diacanthus and L. niloticus, respectively. The ratio of FAA: TAA(functional amino acids: total amino acids) in both maws were 0.69. This is a good explanation for why fish maws have been widely utilized as a traditional tonic and remedy in Asia. Except valine and histidine, all the essential amino acid contents in P. diacanthus were higher than in L. niloticus. Moreover, croaker P. diacanthus maw contained more AA and DHA than perch L. niloticus maw, showing a higher ratio of n-3 / n-6, which is more desirable.     

不同对流层改正方法对 PPP 定位效果影响的对比分析

对流层延迟是影响精密单点定位效果的一项重要误差源,不同的对流层改正方法直接影响PPP的定位结果。对比分析采用UNB3模型、Saastamoinen模型、ZTD参数估计3种方法对PPP定位精度和收敛时间的影响。实验结果表明:3种模型平面改正精度和收敛时间基本一致。天顶方向改正精度UNB3模型与ZTD参数估计法基本相当,但两者优于Saastamoinen模型;收敛速度UNB3模型与Saastamoinen模型基本一致,ZTD参数估计法收敛速度较慢。     

Investigation of in situ thermomechanical behaviors of soil around an energy pile with flat dilatometer tests

Acta Geotechnica - An energy pile alters the ground temperature fields around it, which may lead to uneven settlements and a higher risk of failure. The thermomechanical behaviors of soils have...     

油料信息管理系统控件的设计与实现

介绍了油料信息管理系统控件的数据组织方式,解决了开发过程中遇到的地图响应速度等三个关键问题,设计并实现了油料信息管理系统控件的相关功能.