海南一些港湾海水的水化学特征

测定了海南岛亚龙湾，鹿回头湾及石梅湾沿岩海水的水化学和。结果表明，溶解氧为５．８５－６．８６ｍｇ．ｌ＾－１，总碱度为２．６８－５．８３ｍｍｏｌ．ｌ＾－１，总磷为０．０３３－０．０５３ｍｇ．ｌ＾－１，总氨为２．７８－３．７４ｍｇ．ｌ＾－１，总有机碳为９．７－１０．９ｍｇ．ｌ＾－１。     

纹藤壶BALANUS AMPHITRITE AMPHITRITE的定向研究

本文研究了纹藤壶在海湾扇贝（Ａｒｇｏｐｅｃｔｅｎｉｒｒａｄｉａｎｓ）、试板和虾塘设施上的定向，结果表明：纹藤壶在海湾扇贝上主要附着于壳的顶部（７５．００％）和耳部（２０．９７％），且以多个体附着为主；纹藤壶在海湾扇贝上以０°方式定向，有四种定向类型，定向角度分别为：１５１．１０°、－１５７．４２°、３８．８８°、－３７．９６°；纹藤壶幼体附着于扇贝的肋间沟中，具有向皱性。纹藤壶在试板上迎水流定向，定向角度为：１２．６８°、－１７．２４°。纹藤壶在竹桩上送光定向，定向角度为：１６８．６９°、－１５９．９５°．     

Effects of ultraviolet radiation B （UV-B） on photosynthesis of natural phytoplankton assemblages in a marine bay in Southern China

Solar ultraviolet radiation B (UVB) is known to have inhibitive effects on phytoplankton photosynthesis. UVB light decreases rapidly with increasing depth in the water column and exerts different degrees of UVB inhibitive effects on phytoplankton photosynthesis. In this study, the objectives were to quantify effects of UVB on phytoplankton photosynthesis and quantum yield, and to examine UVB effects on phytoplankton photosynthesis when light varies. The insitu experiments were conducted in Da Ya Bay, which is a semienclosed area in the subtropical South China. The results showed a significant reduction of photosynthetic rates and quantum yield in the presence of UVB. Maximum photosynthetic rates (Pmax) and maximum quantum yield (Φmax) were 11%-22% and 17%-49% less under solar radiation with UVB than without UVB. A simplified model was developed to describe the UVB biologically effective fluence rate (E*inh) as an exponential decay function of depth. Light-shift experiments, in which water samples from the surface and at depth of 4 m were divided into several subsamples, and each subsamples were then incubated at different depths with and without UVB in the water column, showed that phytoplankton from the deeper water (4 m) had more inhibitive rates by UVB than that from the surface when exposed to the same light condition.     

联合国秘书长与1991年第一次海湾危机

1991年第一次海湾战争爆发前后,联合国秘书长佩雷斯.德奎利亚尔表现出色:首先,面对伊拉克武装侵略并占领科威特,作为联合国最高行政长官德奎利亚尔主持国际正义,从未怀疑过这样的武装侵略不应该被击退;其次,当联合国安理会武力制裁伊拉克的678号决议通过后,秘书长为寻求和平解决危机作了最后的斡旋努力;第三,海湾战争结束后,秘书长又积极组织了战争善后事宜尤其是人道主义的救援行动。德奎利尔所做的工作充分表明:世界不能没有联合国秘书长这样一个中立调停者、超国家利益代表的存在。     

Screening microsatellite markers from EST sequences of bay scallop Argopecten irradians

Seventy-five simple sequence repeats （SSRs） were identified by the bioinformatic analysis from 5008 expressed sequence tags （ESTs） of Argopecten irradians. Among the SSRs, the number of repeat nucleotide varied from 2 to 6. Dinucleotide and trinueleotide repeat motifs were dominant in EST-SSRs of bay scallop, with a proportion of 80% over the total screened SSRs. Twenty-nine pairs of primer were designed based on the flank sequences of the selected ESTs using the software of Primet 5, and verified under the given PCR reaction condition. Eighteen of the 29 primer pairs resulted in the expected products, while the remaining either failed to produce any fragments or yielded products over expected size. Thirteen of the 18 SSRs, accounting for 72%, were detected to show polymorphism in the examined scallop samples. A preliminary test in this study indicated that the majority of the identified SSRs were informative in the cultured bay scallops, making them suitable for the population and other genetic analysis. EST-SSR markers have more advantages than the traditional genomic-derived SSRs and there is a wide range of application in comparative mapping, functional gene cloning and marker assisted selection. This research provides a reference to the identification of EST-SSRs with relative bioinformatic analysis from aquaculture species, as well as to those with a large number of ESTs.     

靖海湾春季实测潮流与温盐特征分析

为了解广东靖海湾潮流、余流特征,采用准调和分析方法对2015年4月靖海湾大潮期实测海流数据资料进行分析,计算得到潮流性质、各分潮潮流特征和余流特征,并预测最大可能海流流速.结果表明:靖海湾以不正规半日潮流为主,潮流运动方式以带旋转的往复流为主,往复流的流向为NE-SW向,旋转流的旋转方向为顺时针;各分潮传播方向一致,都...     

海湾六国：收获高油价

海湾六国（沙特阿拉伯、阿拉伯联合酋长国、科威特、阿曼、卡塔尔和巴林）是名副其实的世界油库。根据统计，六国已探明石油储量占全球的45％（其中沙特占约20％），已探明天然气储量占全球的1／4，日产原油近1650万桶。近几年，国际原油价格一路攀升。已由2001年的20美确跃升至今年6月的140美刀桶。海湾国家的石油收入也随之急剧增加。     

广西沿岸主要海湾余流场的数值模拟

由数值模拟和实测结果比较得出,广西沿岸主要海湾余流场流型及流速变化直接与风力的强度和风力作用的方向有关。在湾口开阔海区,风力作用强度加强,余流流流速较大;在湾顶狭窄海区,风力作用强度减弱,余流流速较小。余流量大流速为10cm/s-15cm/s,余流量小流速为1cm/s-2cm/s。