Innovation on Petroleum Engineering Technology of China Beach and Shallow Water Areas

1Chinaoffshoreoil&gasresourcesandtheircharacteristicfeatures　Chinaoffshoreoil&gasexplorationstartedduringthe1 95 0s .Until 1 971 ,thecommercialHai 4fieldwasfoundinBohai.Subsequentlytwoproductionplatformswereconstruc ted ,thefirstChinaoffshoreoilfieldwasformed .Fromthenon ,Chinaoffshoreoil&gasexplorationandexploitationspeedbecameprogressivelyfaster.Afteralargeamountofexplorationwork ,theoilandgasresourcesinChinacoastalareasweremadeclearpreliminarily .AccordingtoState sSecondaryResourceEva…     

黄河滩区绿色养殖带开发与农业经济转型契机--以开封黄河滩区为例

把畜牧养殖业作为开封市农业发展的突破点,结合农业产业结构调整和开封的地域优势,研究开封市农村产业化发展的新契机.最后,分析了开封市发展奶业的优势条件,并针对发展过程中应该注意的各种问题提出了相应的对策.     

黄骅港外航道大风骤淤的机理及其整治

黄骅港位于渤海湾西南，是建在淤泥质海岸上的人工港，在特殊大风期间，即E向或ENE向6级以上的海向风廷时14小时以上时，外航道的淤积量大大超过原先的预测值，且淤积物为密实、坚硬、难以疏浚的粉沙。本研究表明，这一问题产生的原因是堤头旋涡的输沙作用，卫星图像和数模证明了堤头旋涡的存在；同时还对设置垂直和平行于海岸线防波堤的两种整治方案作了讨论。     

沙泥混合型岸滩及沙泥分界点初探——厦门湾岸滩类型调查

基于厦门湾30个断面剖面形态和泥沙特点的现场勘测工作,同时辅以潮流场和波浪场的数值模拟,从动力学角度对厦门湾各处的岸滩类型进行划分。提出"沙泥分界点"的概念,指出沙泥分界点高程主要取决于当地波浪条件。分析结果表明:厦门湾除了存在沙质岸滩和泥质岸滩外,还存在"沙泥混合型岸滩";在淤泥质海岸大环境下,如近岸波浪较强,且有较粗颗粒泥沙供给,则可能产生沙泥混合型岸滩。     

我国优秀沙滩排球运动员脊柱腰段损伤与气质类型之间关系的研究

运用文献资料、调查访问等研究方法,对我国优秀排球运动员脊柱腰段损伤的现状进行调查分析,探讨优秀沙滩排球运动员脊柱腰段损伤与运动员气质类型之间的关系.结果显示:目前我国优秀沙滩排球运动员脊柱腰段损伤几乎达到84.0 %,造成损伤的原因是复杂的、多方面的.无论在损伤人数,还是在损伤程度,胆汁质的运动员都高于多血质的运动员且远远高于粘液质的运动员.因此,了解每一个运动员的气质类型,有助于运动员的选材、训练、管理和预防运动损伤.     

The diets of juvenile horseshoe crabs,Tachypleus tridentatus and Carcinoscorpius rotundicauda (Xiphosura), from nursery beaches proposed for conservation in Hong Kong

Once common as a fishery resource, adult horseshoe crabs of two species occur in Hong Kong. A third, Tachypleus gigas, can no longer be found. Once common too were breeding and nursery beaches for horseshoe crabs in Hong Kong but overfishing of adults, pollution and coastal reclamation have reduced these to but three identified sandy mudflats and only one where juvenile Tachypleus tridentatus and Carcinoscorpius rotundicauda are sympatric. Nothing is known, however, of the conservation requirements of these two species locally and this study of the diets of these juvenile horseshoe crabs on two such nursery beaches aimed at providing information on this most elementary aspect of their biology. Gut contents of juvenile horseshoe crabs, i.e. nine Tachypleus tridentatus (8.5–67?mm prosoma width) and two Carcinoscorpius rotundicauda (50 and 52?mm prosoma width), were analysed and compared with the composition of the ambient assemblage of meiobenthos on a nursery beach at Pak Nai, Hong Kong. The obtained data suggest that juvenile horseshoe crabs of both species are selective benthic feeders and subsist mainly on insect larvae, polychaetes, oligochaetes, small crabs and thin-shelled bivalves. A strong, positive, preference for insect larvae (Chironomous sp.: Diptera: Chironomidae) was recorded, but with no preference for meiofauna over macrofauna.     

海南万宁礼纪青梅林（续完）

海南万宁礼纪青梅林（续完）梁淑群，林英，杨小波，黄世满，符史新，谢国干（海南大学）礼纪青皮林自然保护区植物名录面类植物门ＰＴＥＲＩＤＯＰＨＹＴＡ１松叶蕨科Ｐｓｉｌｏｔａｃｅａｅ１）松叶蕨Ｐｓｉｌｏｔｕｍｎｕｄｕｍ（Ｌｉｎｎ，）Ｇｒｉｓｅｂ２水龙骨科Ｐ...     

北海银滩海岸冲刷及环境污损原因分析

北海银滩位于广西北海市海岸东面，目前出现，海岸冲刷后退，沙滩变陡萎缩，沙滩表层变“黑”，海域水质污染现象，原因是：泻湖口门防波堤拦截了西向沿岸的输沙，挡浪墙破坏了沙坝滩的整体性，挡浪墙伸入潮间带加剧的墙前冲刷，沙滩严重冲刷使滩面变“黑”，生活污水，渔港排污，泻湖内港底质有机污染使海域污染严重，为改良银滩环境，建议拆除部分建在潮间带上的建筑物，如宾馆，商店，挡浪墙，缩短防波堤工程，在潮间带上种植林带，用机械或人工方法进行泻湖底泥清淤，在银滩附近建立污水收集系统。