NOTE ON GORRELATION OF PHYSIOGRAPHIC STAGES

The definite nature of the faunal evidence afforded by the Nihowan beds is of importance in fixing the limits of the physiographic stages which till now have been somewhat hazily defined.     

DEEP WELLS IN THE PEKING AREA

The underground water-supply of the plain of North Chihli is of sufficient importance to geologists and civil engineers to warrant the placing in readily available form of some data till now not easily accessible.     

Total oxyradical scavenging capacity of the deep-sea amphipod Eurythenes gryllus

Environmental concern for the deep-sea ecosystem is increasing as contaminants, originating from anthropogenic activities, have been detected in deep-sea biota. However, little is known on the xenobiotics metabolising capability of deep-sea fauna. In this study, the deep-sea amphipod Eurythenes gryllus was selected as sentinel species to measure the total oxyradical scavenging capacity (TOSC). Individuals of E. gryllus were sampled at 2000 m depth in the Arctic Ocean. The TOSC assay was measured on the cytosolic fraction and the soluble fraction (3 kDa) of the digestive gland and on the cell-free haemolymph toward peroxyl, hydroxyl and peroxynitrite radicals according to the method of Winston et al. [Free Radical Biology and Medicine 24 (3) (1998) 480] and Regoli and Winston [Toxicology and Applied Pharmacology 156 (1999) 96]. These results provide the first baseline data set for total antioxidant capacity in a deep-sea amphipod.     

对地球大气和表面研究的卫星数据处理和分析软件系统

一、引 言 在地球科学发展中现在正出现两个重要的趋势。一个是传统的研究地球部分的定向学科的方法。它正慢慢地让位於更全面的多学科的方法,该方法把地球和大气看成是一个动态的综合系统。另一个是空间观测方法,或更确切地说是卫星遥感,它正成为地球科学各学科如:海洋学、气象学、生物学、地质学和地球物理学的标准研究工具。 鉴于这种趋势,加州空间研究所一直都在开发卫星数据处理和分析软件系统,来支持多学科的及综合研究计划。该系统叫做OASIS(海洋大气卫星图象系统),它有助於处理地球的大气和表面(陆地和海洋)的科研及教学活动的开展。     

磷在海洋碱性岩系列中的分布

磷在海洋碱性岩系列中的分布Ｂ．Ｂ．ＭａＴＢｅｅＨＫｏＢ在所有的玄武岩类中，板内海洋火山作用特有的碱性玄武岩，与其它类型玄武岩相比，磷的含量最高。因为海洋火山作用的特征是具有深部分异岩石系列的长期活动的巨型中心式火山构筑体，因此追踪磷在富磷的初始熔浆分...