1976年世界重大天气现象——第二部份(续本刊1977年第8期)     

杨希宁 《气象科技》1978,(1)

亚洲温度:苏联哈萨克地区,1月平均温度比常年高5—8℃,西林诺格勒偏高8.7℃,为85年来的最高值。4月西伯利亚东北大部份地区比常年高5—8℃,10月下半月,西伯利亚西部则比常年冷,河流提早冰冻。阿富汗大部地区,2月和4月温度很低,许多地区下雪。查谟和克什米尔2月也很寒冷。2月27日斯利那加最低温度-9℃(比常年低10℃)。5月23—27日安得拉邦沿海地区出现热浪,卡基纳达温度高达46℃比常年高9℃。  相似文献   

普兰店市金厂沟红土型金矿基本特征及勘查评价工作建议     

张庆奎  李忠臣  杨中柱 《国土资源》2000,(3)

金厂沟红土型金矿在辽南地区属首次发现。该金矿为改造红土型金矿,产出于原生矿体之上或其附近的残坡积红土中,划分为三种类型:残积型、坡积型和残坡积型。矿体总体呈近东西向条带状分布,规模较大,品位较高,开发利用前景较好。根据矿体出露形态特征、地质特征及初步取得的基本数据进行分析和统计,对勘查评价工作手段、工程网度及工业品位指标的选取提出建议。  相似文献   

南阳：土地整理项目为新农村建设注入新活力     

杨天华  杨西潭  霍海涛 《河南国土资源》2007,(1):22

时至岁末,邓州市穰东镇泰山村外,一大片耕地里,但见土地平整,阡陌纵横,小麦长势喜人……这是国家级穰东镇土地整理项目的成功实施,给泰山村带来的新变化。穰东镇土地整理项目是2004年度国家投资土地整理重点项目之一,规模6000亩,总投资728万元。该片耕地在整理之前,虽为粮食主产区,但高低起伏,农业基础设施配套程度低,农业生产效率低下。经过重新规划布局,并对项目区内农田、水利、道路、村庄的综合治理,大大改善了项目区内的耕作条件,现在“田成方、林成网、渠相通、路相连、旱能浇、涝能排”,一个现代化的农业产业基地呈现在人们面前,并新…  相似文献   

Current and Thermohaline Characteristics of the Arabian Sea During January 1998     

CHEN Meixiang)  ZUO Juncheng)  LI Peiliang)  DU Ling)  and LI Lei)) Oceanography Department  Ocean University of China  Qingdao  P. R. China ) Key Laboratory of Coastal Disaster  Defence  Ministry of Education  Hohai University  Nanjing  P. R. China 《中国海洋大学学报(英文版)》2007,6(2):117-124

Based on a ship survey during January 1998, the characteristics of the flow, the thermohaline properties and the volume transport of the Arabian Sea are discussed. A strong westward flow exists between 10.5?N and 11?N, part of which turns to the south as the Somali current near the coast at about 10?N and the rest turns north. At the passage between the African continent and the So- cotra Island, the northern branch separates into two flows: the left one enters the passage and the right one flows eastward along the southern slope of the island. Off the island the flow separates once more, most of it meandering northeast and a small fraction flow- ing southeast. Volume transport calculation suggests that the tidal transport is one or two orders of magnitude smaller than the total transport in this region and it becomes more important near the coast. The average velocity of the flow in the upper layer (0-150 m) is about 20 cm s-1, with a maximum of 53 cm s-1 appearing east of the Socotra Island, and the subsurface layer (200-800 m) has an aver- age velocity of 8.6 cm s-1; the velocity becomes smaller at greater depths. The depth of the seasonal thermocline is about 100 m, above which there is a layer with well mixed temperature and dissolved oxygen. High-salinity and oxygen-rich water appears near the surface of the northern Arabian Sea; a salinity maximum and oxygen minimum at 100 m depth along 8?N testifies the subduction of surface water from the northern Arabian Sea. Waters from the Red Sea and the Persian Gulf also influence the salinity of the area.  相似文献   

Study on the Free Radical Scavenging Activity of Sea Cucumber (Paracaudina chinens var.) Gelatin Hydrolysate     

ZENG Mingyong  XIAO Feng  ZHAO Yuanhui  LIU Zunying  LI Bafang  and DONG Shiyuan College of Food Science  Engineering  Ocean University of China  Qingdao  P. R. China 《中国海洋大学学报(英文版)》2007,6(3)

Gelatin from the sea cucumber(Paracaudina chinens var.) was hydrolyzed by bromelain and the hydrolysate was found to have a high free radical scavenging activity. The hydrolysate was fractionated through an ultrafiltration membrane with 5 kDa molecular weight cutoff(MWCO). The portion(less than 5 kDa) was further separated by Sephadex G-25. The active peak was col-lected and assayed for free radical scavenging activity. The scavenging rates for superoxide anion radicals(O2·-) and hydroxyl radi-cals(·OH) of the fraction with the highest activity were 29.02% and 75.41%,respectively. A rabbit liver mitochondrial free radical damage model was adopted to study the free radical scavenging activity of the fraction. The results showed that the sea cucumber gelatin hydrolysate can prevent the damage of rabbit liver and mitochondria.  相似文献   

在6厘米波长对类星体3C454.3的九站VLBI观测     

吴盛殷  I.Pauliny-Toth  R.Porcas  A.Zensus 《中国天文和天体物理学报》1986,(2)

3C454.3是近几年引起广泛注意的一个强活动射电类星体,它有毫角秒尺度的核——喷流结构,其核在1981年的一次流量密度大爆发之后,显示出“超光速增亮”现象,在6厘米波长,用包括欧洲、美国及南非的9个射电望远镜,于1983年10月对3C454.3进行了甚长基线干涉网观测。观测结果除了证实其核——喷流结构,显示了从毫角秒到角秒尺度上该类星体结构的系统弯曲外,还清楚地揭示了“超光速增亮”所预期的,在1981年8月到1983年1月期间,核的超光速膨胀现象。  相似文献   

Effects of Body Weight and Water Temperature on Maximum Food Consumption of JuvenileSebastodes fuscescens (Houttuyn)     

谢松光  杨红生  周毅  张福绥 《中国海洋湖沼学报》2004,22(1)

1　INTRODUCTIONTherateoffoodconsumptionoffishfedadlibitumisregardedasthemaximumrateoffoodconsumption(Cmax) (Woottonetal.,1 980 ) .SeveralfactorsthatinfluenceCmaxincludingbodyweight (Liuetal.,1 998) ,watertemperature (Liuetal.,1 998) ,dis solvedoxygen (Vivekanandan ,1 977) ,salinity (ZanuyandCarrillo ,1 985 ) ,andphotoperiod (Grossetal.,1 965 ) ,werereported .Bodysizeandwatertemperaturewereregardedastwoofthemostimportantfactors,andhadreceivedmostattention (Elliott,1 979;Woottonetal.,1 …  相似文献   

丰都县城区出现成因不明的震动     

杨其文 《山地学报》1987,(1)

1983年10月6日11时,丰都县城内西南部方圆230米范围中的各种建筑物首次发生了原因不明的强烈震动。震动区域近似圆形,直径约230米,面积0.042平方公里,震动强度大约相当于Ⅴ—Ⅵ级地震,历时168小时。这次震动在前五天较为强烈,对建筑物影响很大,特别是位于“震中区”的丰都县房管所一幢四层楼房(简称房管所楼房)震动  相似文献   

闽浙赣粤边界带上的裂谷作用     

谭祖恩  杨若利 《天津地质学会志》1990,8(2):83-91

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THE DIFFERENCE OF ECONOMIC FUNCTION AND THE TRENDS OF INDUSTRIAL DEVELOPMENT IN CENTRAL CITIES ALONG THE XIJIANG RIVER     

LIAO Chi-mei  LI Lan  ZENG Ling-yun 《中国地理科学(英文版)》2000,10(4):335-342

TheXijiangRiveristhemainwaterwayacrosseastandwestinSouthernChina.ItsmaincoursebacksontothewestofGuangdongandthesouthwestofChina,withitsexitthroughHongKong,MacaoandSoutheasternAsia.Ithasawidehinterlandandconvenientwatertransportation.AlongtheXijiangRiver,thecentralcitiesarethecities,whichspreadalongtheXijiangRiver'smaincourse,theZhujiangRiver'sdeltaandoutlet,andBosehasbeenselectedasarepresentativecityintheupperreachesoftheXijiangRiver.Theytotal12cities,includingGuangzhou,Shenzhen,Zhuh…  相似文献