共查询到20条相似文献，搜索用时 15 毫秒
1.
ImODUonONRespirationandexereionareimPortantaspeCtSofbioenergCties.TheaspthetionInetabolismandexcretionofscallopswerestudiedbydifferentmwherspeayne,l97l,BayneandNewell,l983,Bricelj,l987,MackayandShumway,l98O,Mdriky,l973,FujiandHashizume,l974,Madrinald,l988,ShumwayCtal.,l988,Vahl,l972,l978).Themetabolicrateofbivalvesisinfluentalbyanumberofvariables,indudingternperature,bodysize,oxygenimsion,foodconantfation,reproductvestate,aCtivity1ev-elandphySiologicalcondition.Themetabolicrateofscal… 相似文献
2.
浅层地下水调查是山东省黄河下游流域生态地球化学调查项目中的一项工作内容。调查是按每16 km2采集1件浅层地下水样品的密度,分析测试As,Ba,Be,Ca,Cd,Co,Cu,Fe,Hg,Pb,Se,Zn,F-,Cl-,Cr6 ,NO2-,COD,pH等33项指标;通过对这些指标在浅层地下水中的背景变化规律研究认为:调查区内浅层地下水中各指标含量起伏变化大,局部富集程度高,特别是As,Fe,K,La,Sb,Sn,Zn,Cl-,NO2-等指标的变异系数均>3.0,说明这些指标在浅层地下水中分布极不均匀,虽然背景含量较低,但在局部地段会形成高含量区,影响浅层地下水质量。选择As,Ba,Be,Cd,Co,Cu,Fe,Hg,Mn,Mo,Ni,Pb,Se,Zn,F-,Cl-,Cr6 ,NO2-,COD,pH等20项指标,按《地下水环境质量标准》中的要求,对浅层地下水环境质量进行的单项组分和综合评价结果显示,达到较好级以上者不足9%,而较差和极差级者达90%以上,表明调查区内浅层地下水环境污染状况较为严重。 相似文献
3.
Marine Yeasts and Their Applications in Mariculture 总被引：4，自引：2，他引：2
CHI Zhenming LIU Zhiqiang GAO Lingmei GONG Fang MA Chunling WANG Xianghong LI Haifeng 《中国海洋大学学报(英文版)》2006,5(3):251-256
1Introduction Becauseyeastscanproducemanybioactivesubstan ces,suchasprotein,aminoacids,vitamin,polysac charide,fattyacid,phospholipid,polyamine,astax anthin,βcarotenoid,trehalose,glutathione,superox idedismutase,chitinase,amylase,phytase,protease,killert… 相似文献
4.
19种淡水鱼类的生活史类型研究 总被引：4，自引：0，他引：4
研究了中华鲟,达氏鳇,施氏鲟,青鱼,草鱼,鲢,镛,鲤,赤眼鳟,大眼鳜,鳜,黄尾密鲴,银鲴,花Ｇｕ,鳊,团头鲂,尖头塘鳢,鲫等１９种淡水鱼类的生态参数（Ｌ∞,Ｗ∞,Ｋ,Ｔｍ,Ｔｍａｘ,Ｍ,ＰＦ）和生活史类型。３种鲟鱼类属ｋ－选择,青鱼,草鱼,鲢,镛偏向ｒ－选择。其它１２种鱼类属ｒ－选择。种群繁殖力ＰＦ的数值大体上可反映出某种鱼类的生活史类型,运用Ｂｅｒｅｒｔｏｎ－Ｈｏｌｔ平衡产量模式估算表明,只有合 相似文献
5.
Screening of 46 putative enzyme-coding loci and 4 different kinds of tissues of Sepiella maindroni de Rochebrone, 1884 for enzymatic activities using starch gel electrophoretic technique proved that the 21 enzymes such as AAT, AK, ALP, AP, CK, DIA, ES, FBP, G3PDH, GPI, GRS,IDH, LDH, MDH, MEP, MPI, NP, PGDH, PGM, SOD and XO* , were active to Sepiella maindroni after being stained. The tissue exhibiting stable and clear bands was also determined. Among tissues tested, mantle muscle tissue was the best for electrophoretic survey of isozymes. Buccal bulb muscle, eye and liver were fairly good for some special enzymes, such as DIA, ES, MPI, NT, etc. 相似文献
6.
这里有唐代谓之湄沱湖,金代称之北琴海的兴凯湖。它烟波浩淼,横无涯际,水天一色,景致绮丽。这里的春夏秋冬因兴凯湖相伴而超凡脱俗、与众不同;这里的湖光景致更因四季变换而美妙绝伦。春到兴凯,一夜东风,红粉杏花,竞相开放,云霞蒸蔚,香飘湖畔。盛夏兴凯,万顷浪涛,青波荡漾,百里湖滩,金沙灿灿,花影绿幛,鸟鸣莺啼。兴凯之秋,碧空如洗,湖光内敛,山色凝重,岸上层叠,浸染枫红。冬临兴凯,寒风劲吹,漫天飞雪,瞬间浪涛平息,湖面冰封如镜,楼台白雪霜树,玉宇琼阁仙境。松阿察河,凝霜挂雪,披银垂玉,似花非花,满目雾凇。 相似文献
7.
TheagriculturalregionofSichuanBasinislocatedintheeastofSichuanProvince.TheChangjiang(YangtZe)caver,traversingeastandwest,itsbantributariesincludingtheMinjiang,Tuojiang,Jialing,FujiangandQujiangrivers,likefivefingerstoextendtowardsthenorth,disunitedthebasinintoplainsandhills,surroundedbylowandmiddlemountains,theterraindropsrapidlyfromtheexteriortointerior.Thus,asinglephysicalgeographicalunitismadeup.Withthelong-termdeve1Opment,acharacteristicagriculturalregionappealSundertheconditionofric… 相似文献
8.
张会丽 《资源导刊(河南)》2015,(2)
春种夏管秋收冬藏,年末岁尾,盘点算账,人人写总结,部门算总账。日前,扶沟县国土资源局在年终总结时脱旧规,除陋习,亮利剑,出鲜招,保真保简保干保实,收效甚好。
在学习贯彻落实习近平总书记系列重要讲话精神,纠正“四风”、深入开展党的群众路线教育实践活动中,该局在今年的工作总结中一改过去“人人写总结,领导看总结,总结写成摞,收效不显著”的做法,大胆改革,调整思路,更新观念,创新方式,采取“缩水保真、脱靴保简、翻晒保干、挑刺保实”的做法,真正使总结文如其人、表里一致,充分调动了干部职工的工作积极性。缩水保真即挤水分求真实,一是一二是二,不夸大不缩小,将股室、个人所写的总结全部公开上墙,接受大家评议;脱靴保简即写总结“不穿靴戴帽”,没有繁文缛节,开门见山,直奔主题,单刀直入,不搞弯弯绕。股室、个人总结只写事说收获,不浓墨重彩地写过程和做法;翻晒保干即公开透明,滤湿保干,去稀捞稠,说大弃小,突出重点,将股室和个人总结在大会上公开亮相,让众人评说;挑刺保实即找毛病说不足,采用背靠背、面对面的方式进行评议。局长总结股长评,股长总结同志议,股室总结相互审,同志总结大家看,摆上桌面,不藏不掖,公开评议,说长道短,使成绩摆得准,问题查得透,经验找得足,干劲鼓得实,来年思路清,工作方向明。 相似文献
在学习贯彻落实习近平总书记系列重要讲话精神,纠正“四风”、深入开展党的群众路线教育实践活动中,该局在今年的工作总结中一改过去“人人写总结,领导看总结,总结写成摞,收效不显著”的做法,大胆改革,调整思路,更新观念,创新方式,采取“缩水保真、脱靴保简、翻晒保干、挑刺保实”的做法,真正使总结文如其人、表里一致,充分调动了干部职工的工作积极性。缩水保真即挤水分求真实,一是一二是二,不夸大不缩小,将股室、个人所写的总结全部公开上墙,接受大家评议;脱靴保简即写总结“不穿靴戴帽”,没有繁文缛节,开门见山,直奔主题,单刀直入,不搞弯弯绕。股室、个人总结只写事说收获,不浓墨重彩地写过程和做法;翻晒保干即公开透明,滤湿保干,去稀捞稠,说大弃小,突出重点,将股室和个人总结在大会上公开亮相,让众人评说;挑刺保实即找毛病说不足,采用背靠背、面对面的方式进行评议。局长总结股长评,股长总结同志议,股室总结相互审,同志总结大家看,摆上桌面,不藏不掖,公开评议,说长道短,使成绩摆得准,问题查得透,经验找得足,干劲鼓得实,来年思路清,工作方向明。 相似文献
9.
INTRODUCTIONThedistingnishingc~teristicsofQinghaboe,thebiewstsalinelakeinCfuna,are:vastwaterm,higheleVation,closeddrinagbasinandattrativenaedland-scape.The~clakeleveldIDPsincethebegiwhngofthiscentwhascausedaseriesofenvironrnntalProblems(degenndionofghanggIaSSlandaIDunthelake,desertffica-tioninthebeacharea,aeOianerosionoftheeXposedlakebed,deCrainwaersuPPliesandincreaseinthewaterndnends).IncentalAsia,mostofthewell-knOWnlargelakes,includingla.kessuchasIssyk-kul(SeVaStyanvandSndmov,l… 相似文献
10.
张传良 《资源导刊(河南)》2018,(7)
正人生当中,幼年时与父母为伴,青年时与朋友为伴,中年与事业为伴,老年时与妻子为伴。然而,有没有可以终生与之为伴的呢?有,这就是书。据说,有人做过调查,心志专一的人比一般人高寿。要读书,其心必静。静心读书,平淡如水,忘却烦恼,心理平衡,有利健康。心境不静,杂念丛生,内心躁动,生理失衡,免疫性弱,易染疾病。读书学习,既能养心又能养身,身心双养,何乐不为?既然书可以做我们终生的朋友,读书可以养心养身,那我们就要认真 相似文献
11.
钟天地之灵秀,展千年之神仪,蕴山水之精华,聚万年之绮丽。龙江四时何其美,伊始于春,北国大地绽新绿,春盎于伊。搏兴安万众同心,竞奇志披荆斩棘。八千里路,晓夜兼程,战天斗地,让清风送爽;六十春秋,风雨同舟,劈峰截岭,令满山荫绿。岭峻珠翠欲滴,林清润肌沁体,城达政通人和,景秀诗情画意。环视伊春,迷之林涛,醉之史韵;纵观伊春,痴之形胜,恋之灵气。 相似文献
12.
ZHANG Jing-xiang 《中国地理科学(英文版)》2000,10(2):119-124
Theappearanceofmodemurbancommunityisanoutcomeofindustrializationandsocialdevelopment.ThecityitseIfindicatestheconcentrationofpopulation,toolofproduction,capital,enjoymentanddemand.Asaspecialintensive1ivingspace,citymay,inthecourseofmodernization,gatherandagglomeratevariousre-sourcestoitsown,andreflectandspreaditsfunctionstoperipheralareasaswell,whichistheprocessofur-banization.Nomatterasatermoraphenomenon,sinceitwasfirstused'intheworks"FundamentalTheoryofU,ba.i.ati.."bytheSpanishengineerA.S… 相似文献
13.
通过开展三岔顶一带1:5万水系沉积物测量,分析了研究Au,Ag,Cu,Pb,Zn,W,Sn,Mo,As,Bi,Sb,Cr,Ni,Co,Hg,Cd共16种元素地球化学参数特征及其相关性,认为该区元素的富集与地层、构造、岩浆岩明显相关;Hg,Cr,Ni,W,As,Au,Pb,Zn等元素变异系数较大,易于形成异常;Ag,As,Au,Co,Cr,Cu,Hg,Ni,Sb,Zn等10种元素不同程度富集,成矿可能性大。通过因子分析,提取了6种具有代表性的因子组合类型,讨论了各元素空间分布特征。全区共圈定31处地球化学综合异常,在综合异常查证的基础上,结合区域成矿地质条件、矿产地质特征,圈定出寒凝泉铬钴镍铜、黄沙河东铜银钼铅多金属、月牙湾铜银铅锌多金属3处找矿远景区,为该地区进一步开展找矿工作提供了基础地球化学依据。 相似文献
14.
秦洪宾 《地球科学与环境学报》1985,(3)
石崇珊瑚树,原为海中产,追忆四亿年,志留泥盆海,单虫极地寒,肉身腔肠皱,无骨叫海葵,独居像花朵,膜分四六八,中轴或有无,壁环计日月,阴阳符天文,分类大观园,地层赖对比,学者求真善,中外多名人,珊瑚谁曰小,欲穷和平理, 相似文献
15.
In order to elucidate the state of diseases, especially viral diseases, and to prevent viral diseases from occurring in olive flounder hatcheries, a range of studies, including epidemiological study, were performed from 1997 to 2003. The location of the hatcheries investigated includes several representative sites in the east （Kangnung, Uljin, Pohang, Yangsan, Ulsan, Pusan）, south （Wando, Changheung, Goheung, Yeosu, Namhae, Tongyeong, Geoje, Jeju） and west （Seosan, Kunsan, Gochang, Yeongkwang, Mokpo, Chindo） costal areas of the Korea Peninsula. A total of 2000 cases have been examined in 7 years, in which mortality caused by viral agents accounts for 22%, or 446 cases. Mortalities associated with viral infection considerably increased from 14% in 1997 to 27% in 2003. A variety of viral diseases were observed, and the occurrences of viral epidermal hyperplasia, viral ascites and viral deformity, viral nervous necrosis, and hirame rhabdoviral disease are 14%, 51%, 25%, and 8% respectively. By investigating the viral infection of broodstock flounder, the infection rate of marine birnavirus （MABV） in hatcheries was identified to be approximately 30%, therefore, it is highly necessary to acquire and keep non-infected broodstock fishes. 相似文献
16.
To provide scientific basis for appraising natural resources in Mt. Namjagbarwa area, the migration characteristics of geochemical microelements, such as Zn, V, Ti, Pb, Ni, Cu, Cr, Co, Be and Ba, in the landscape zones of alpine scrub and meadow, the mountainous dark coniferous forest, the mountainous mixed broadleaf and coniferous forest, the mountainous quasi-subtropical semi-evergreen broadleaf forest, the mountainous subtropical evergreen broadleaf forest, and the valley quasi-tropical monsoon rainforest have been described in the paper. 相似文献
17.
Shen Qiushi Zhang Lu Kimirei Ismael Aaron Wang Zhaode Gao Qun Chen Shuang Yu Cheng 《中国海洋湖沼学报》2019,37(1):134-145
The vertical distributions of trace metals and physicochemical parameters in water columns in Kigoma Bay and Kungwe Bay in eastern Lake Tanganyika, Tanzania, were studied. The Al, Ba, Ca, Co,K, Mg, Mn, Mo, Na, Sn, Sr, and V concentrations were low and varied very little with depth. The toxic heavy metal(As, Cr, Cu, Ni, Pb, and Zn) concentrations were relatively high in the surface water, and the Cu, Ni, Pb, and Zn concentrations decreased with depth. Principal component and cluster analyses indicated that the metals in the lake had three main sources. Al, Ba, Ca, Co, Cu, Cr, Mn, Sr, Sn, and V were found to be geogenic; As, Cr, Cu, Mo, Ni, Pb, Sn and Zn anthropogenic; and As, Ca, Co, Mg, and Na biogenic.Human health risk assessments were performed, and it was found that trace metals in the water at most of the sampling sites would cause no potential adverse ef fects or non-carcinogenic health risks through dermal contact or ingestion. However, trace metals in surface water in Kungwe Bay could have certain adverse ef fects on human health through the ingestion pathway(the total hazard quotient for ingestion(ΣHQi ng)was 1.75(a value 1 was de?ned as possibly indicating adverse ef fects). The Pb HQi ng for surface water in Kungwe Bay was 1.50 and contributed 80% of the ΣHQ_(ing_, implying that Pb pollution is a water quality and safety problem that needs to be carefully monitored and the potential sources identi?ed. 相似文献
18.
19.
HU Guanghai ) * YAN Tong ) WANG Xiuqin ) ZHONG Delin )) First Institute of Oceanography S.O.A. Qingdao P..R.China) Ocean University of China Qingdao P..R.China 《中国海洋大学学报(英文版)》2004,3(2):195-200
1 Introduction Manhasmodifiedmanyoftheworld’scoastlines ,eitherdirectlybyconstructionordredging ,orindi rectlyasaresultofenvironmentalchangesthatinflu encesedimentsupply ,runoff,orclimate (Johns ,1995 ) .HumanactivityhasalsoproducedthemostprofoundeffectsonthecoastalenvironmentinChina .Forex ample,damconstructions ,whichrestrictpeakflowsintheupstreamoftheYellowRiver ,couldgreatlyre ducethenaturalsupplyofsedimentintotherivermouthandresultintheerosionofbeaches . Inrecentyears,manystudiescon… 相似文献