最新刊期
期 42 ， 2000
- 摘要：Risk assessment of storm surge and wave hazards in the Huanghe Delta coastal area of the Bohai Sea requires accurate prediction of storm surge and wave hazards. So this study is aimed at establishing a coastal high-resolution (2′×2′) two way coupled wave-tide-surge model, including three main physical mechanisms. The model was used for comparisons and analysis of simulated and measured wave heights and sea level in two moderate storm cases in the Huanghe Delta coastal area. We show that the effects of different physical mechanisms on wave heights are mainly determined by wave- current interaction by radiation stress in the wave energy equation. Wave age dependent surface wind stress and radiation stress mechanisms in the coupling wave-tile-surge interaction have positive impact on sea level, and wave-current interaction bottom stress mechanism show negative impact on sea level. The comprehensive effects of three main physical mechanisms show positive net impact on sea level and increase it by as much as 25cm. We show that the wave height and sea levels simulated by the coupled wave tide-surge model agree better with the measured values compared to uncoupled model results particularly for peak storm conditions.
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发布时间：2024-01-30 - 摘要：Piston cores CSH1 and DGKS9603 used in this study were collected from the Middle Okinawa Trough (31°13.733′N, 128° 43.471′E, water depth 703m and 28°08.869′N, 127°16.238′E, water depth 1100 m, respectively) during a China-France join t survey in the East China Sea. The palynologic assemblages of core CSH1 and plank tonic foraminifers investigated in this work, provide a direct historical record of paleo climate oscillations during the last 50 kyrs. A total of six cooling events were identified based on spore pollen assemblages of core CSH1, these cold events occurred at 4.1～4.6, 11.7～13.0, 15.4、23.2, 29.4 and 47.4 ka respectively. The plank tonic foraminiferal δ18O, faunal variations and MAT SST records of core DGKS9603 also show six cooling events during the last 50 kyrs, unlike core CSH1 these events occurred at 11.7～13.0, 14.7, 24.3, 28.5, 36.9 and 45.3 ka respectively. The cold events of the two piton cores show good correlation with the coldest stadials of Dansgaard-Oeschger cycles documented from the Greenland GR IP ice cores, δ18O record corresponding to the youngest five Heinrich events. Our study indicates that cold events (Younger Dryas event and the four Heinrich events H1, H2, H3, H5) shown by different palao environment investigative methods in different regions from the Okinawa Trough correlated well. Although the true climate teleconnections between the Okinawa Trough and Greenland and the North Atlantic is unclear, millennial to centennial fluctuations in the in tensity of the East Asian monsoon circulation induced by climate oscillations in the high latitudes of the North Hemisphere could be the main mechanism.关键词：the Okinawa Trough;the Last Glaciation;Millennial-scale Paleoceanography Evolution
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发布时间：2024-01-30 - 摘要：Antibiotics have been the key chemotherapeutic agents used in maricultural settings to achieve either prophylaxis or therapy. During the last 10 years, the world-wide frequent outbreak of maricultural animal diseases caused by microbes has resulted in extensive and intensive use and misuse of antibiotics. As a harmful side effect, antibiotic resistant bacteria, especially those with multi-drug resistance, are abundant and persistent in marine environments, causing even higher level of difficulty and failure in aquacultural disease control and treatment. Furthermore, via the food chain, interactions of land and ocean, and human maritime activities, antibiotic resistance can be transferred to and spread in healthy marine and terrestrial environments, putting human health and wellbeing at great risk. Thus, maricultural environments, as a cause, reservoir and dissemination source of antibiotic resistance, call for our immediate attention and investment of research efforts.
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发布时间：2024-01-30 - 摘要：Because of extreme environmental conditions, deep sea subsurface sediments were traditionally regarded as a huge ‘desert’ unable to support any kind of life-form. However, 30 years' investigation by the successive DSDP and ODP deep drilling projects indicated that microbes are extensively distributed in the deeply buried sediments and some shallow oceanic crusts in the world oceans. The subseafloor deep biosphere has huge microbial biomass and great biological and molecular diversity, and carries out a series of complicated and diverse physio-ecological functions. Study of the deep subseafloor biosphere microorganism s became the foci of studies on life's o rig in and evolution, earth system evolution and transformation, global climate change, biotechnological development and exploitation of marine life and subseafloor natural energy resources. This review discusses the significances of the subseafloor deep biosphere microbial study and summarizes the progresses newly made in this field, in order to promote the initiation and development of related researches in our country for the active engagement in global marine resource exploitation and in international cooperation in tack ling profound scientific issues in the new millennium.关键词：deep sea subsurface sediments;biosphere;microorganisms
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发布时间：2024-01-30 - 摘要：The Okinawa Trough (OT) is a new moon-like back-arc rifting basin, in tense tectonic activity and drastic magmatism are main characteristics for it and adjacent areas. In this paper, according to major, trace elements, Sr-Nd isotopic and age data of volcanic rocks, volcanic properties and distribution as w ell as their link with geological background and evolution were discussed in order to understand the development of magmatism and tectonics on the OT and adjacent areas, deeply. The main conclusions are as follow: (1) Geochemic data show that volcanic rocks from the basin-arc system belong to cal-alkali rock groups, including basalts, basaltic andesites, and rhyolites. The magmatism is bimodal. (2) Rock compositions are different in different parts of the study area. Depth variation of magma source can be though t as a major factor to lead these differences. In middle and northern study area, volcanic rocks are mostly andesites and ryolites. The former mainly located in middle and northern trough, and was juvenile rocks (<1Ma); The latter outcropped in the arc and formed during Miocene. Volcanic rocks in southern study area mostly contain basalts and basaltic andesites. From old to young, they located at Ryukyu arc (RA , 6～18Ma), Northern Taiwan Volcanic Zone(NTVZ, from 3M a-present), and central grabens (Quaternary). (3) Ryukyu volcanic arc (including the southern arc) have been formed since middle and late Miocene (8～6M a). The continental extension behind RA caused the Northern and middle OT opening about 6M a ago, but the collision between Luson Arc and Eurasian plate changed geodynamical conditions in this region about 12Ma ago and led that southern OT opening was later than middle and northern OT. This kinetic change hasn't affected on middle and northern OT, because Keram a Gap stopped the effect of the event. In addition, southern OT should belong to the back-arc basin, because southern RA has been formed about 13Ma ago.
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发布时间：2024-01-30 - 摘要：Minerals are the main components of sediments, whose terrigenous parts are carried into the ocean by rivers or winds and deposit directly or indirectly. The amount of the terrigenous minerals in marine sediments in directly indicates the source area of supply and the strength of the transport agent. Minerals in sediment are strongly affected by tectonic movement and geomorphic evolution in long time scale. Therefore, large tectonic movement must lead to change of mineral components and fluxes. The South China Sea (SCS) basin experienced two tectonic expansions in Cenozoic; the second expansion occurred between 32～15.5Ma, formed the central basin. The Palaw an block moved far away from the northern continent. The Tibet Plateau experienced three accelerated uplifts a t 25～17Ma.B.P, 10～8Ma.B.P and～4Ma.B.P～present. In order to determine the effective tectonic movement proxy indexes and find more evidence for the two large tectonic events in marginal sea sedimentary mineral composition and their fluxes w ere studied.关键词：marine sediment;tectonic movement
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发布时间：2024-01-30 - 摘要：In-situ observation on the self designed thermal spraying meta l coating for long time protection to the jackets of Center No.2 platform in the Sheng li Oil Field in Chengdao showed that the spraying aluminum coating had good corrosion resistant effect on the marine platform. The base was protected from corrosion even when the organic pain ting on surface had fallen off. Mere aluminum coating could not provide good electrochemical protection to the base near the water line. The coating's protective effect in the marine atmosphere zone did not decrease even when the organic paint on the surface was scuffed up or had dropped. The organic paint used to seal the spraying metal coating must have high cohesive affinity and penetration. The two years experiment in the open sea showed that the most economic and effective protective method is to spray zinc coating first, then spray aluminum coating and then to seal the metal coatings with alloprene paint.
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发布时间：2024-01-30 - 摘要：From September 1992 to September 1995, the corrosion behavior of three marine steels was studied in Chengdao offshore area by means of individually and electro-connectedly hanging plates to obtain data for anticorrosion design of oil-exploitation structures there.关键词：corrosion behavior of steel;Offshore Oil Exploitation
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发布时间：2024-01-30 - 摘要：Low concentration chromate conversion technology was successively applied on ho t dip Zn-Al alloy coating. The primary dissolution of the active Zn-rich phase with in the coating immersed in the conversion solution associated with the evidence that the relative activities of each of the elements composing the A l-Zn coatings in the 0.5mo l /L H2 SO4 was Zn >A l > steel. XPS and AES analyses indicated that the chromate conversion film formed on the surface of the Zn-A l alloy coating consists of Cr(OH)3 , Cr2O3, ZnO, Al2O3 , and TiO2 . The results of CASS test confirmed that the corrosion resistance of Zn-Al alloy coating was improved remarkably after the chromate conversion treatment. The fingding that corrosion, especially local corrosion of Zn-Al alloy coating is remarkably reduced may be attributable to the fact that the chromate conversion film in prohibits the anodic and cathodic reactions of the corrosion process, and improves the surface state of the Zn-Al alloy coating.
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发布时间：2024-01-30 - 摘要：Two sulfated chitosan derivatives were prepared in this paper (CSA and CSB that is low and high replacement) and their medical effect was researched. Aim: to study the effect of chitosan derivatives on thrombus formation and cruor time in mice. Method: sixty mice were divided in to six groups and each group was raised with chitosan derivatives (CSA、CSB) 200 and 600mg /kg, aspirin 10 mg /kg, and 0.5% sodium carboxymethyl cellulose 2 ml /mice respectively. The levels of thrombus formation and cruor time were calculated in mice. Conclusion: two kinds of sulfated chitosan of the different sulfur con tent had been successfully prepared, that is CSA:DD 21.23%;CSB:DD 42.21%.Their yields are all over 90%;CSA、CSB at doses of 200mg /kg barely in fluence the rate of thrombus formation and cruor time, however, CSB at doses of 600 mg /kg significantly decreased the weight of thrombus and increased cruor time in mice: decreasing 14.21% thrombus weight and increasing 14.31% cruor time.关键词：chitosan;thrombus formation;cruor time
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发布时间：2024-01-30 - 摘要：The Concept, Content and System of Genetic Resources Meta database on China Marine Economically Valuable (Cultivated) Animals Study on the protection and conservation of marine biological genetic resources has gained much widely with the development of marine aquaculture in China. The more and more data have been collected but how to share these data demands attention too. Sharing of nature resources and biodiversity information useful for aquaculture and related research is the key to their sustainable utilization. Meta data refers to information on the location, source, content, or other specifies in relation to actual data. Meta database is a database designed and developed for meta data conservation and management, which provides services for the management, query and use of actual data. This system has powerful information query functions, such as query by institute catalogue, query by the matic information category, query by name, and query by author. It is rich in information. There are some meta databases such as China Information Network for Sustainable Development and other links on the Internet. But there is no mechanism for marine economically valuable (cultivated) animal genetic resources information exchanging and sharing in China at present. It is there for neccessary and urgent to setup an information query channel with meta data to help people know where to find required information on marine cultivated species and how to use them. This paper clarifies the definition, role and meaning of meta data, and outlined the concept, key elements and standards of meta database. The general status of biodiversity meta database in our country is also reviewed. We discussed the contents and strategies to setup the China Marine Economically Valuable (Cultivated) animal genetic resources meta database in the present paper, including standing criterion institute on collecting, processing, meta database constituting and sharing of information sharing of scientific data on genetic resources, and data collection framework designing. The conceptical basis on how to organize and construct this kind of database is presented.
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发布时间：2024-01-30 - 摘要：Adrenocorticotropin and catecholamines are the primary messengers secreted from the neuroendocrine system when mollusks are disturbed by stressors. The former induces the secretion of the latter. Both circulation nor adrenaline and dopamine concentrations increase in response to stressors, such as those from mechanical stressors, variations of temperature an salinity and some parasites. Noradrenaline concentrationsvaryfrom 1ng/mlto20 ng/ml, anddopamine concentrations vary from 0.4 ng/ml to3 ng/ml. Inturn, the change of catecholamines induces a series of responses, such as increased oxygen uptake and reallocation of energy. Stressors induce the changes of some immune parameters including the numbers of hemocytes, the hemocyte migratory activity, phagocytotic activity, the circulation catecholamine concentrations, chemilum inesence and superoxide anion production. Studies on the effect of stress on mollusks immune functions are rare. Stressors can exert inhibiting effects on the mollusks immune functions, and subsequently a stimulating effect takes place. In this paper, stress induced neuroendocrine and immune responses in mollusks are reviewed.
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发布时间：2024-01-30 - 摘要：Based on the protein comparison between zebrafish G li2 and fruit fly Ci and the analysis of hydrophilicity/hydrophobicity of G li2 protein by computer programmer, the recombination N-terminal partial protein of G li2 protein was designed. After the DNA fragment encoding the N terminal part was cloned out by PCR, it was ligated with an expression vector containing H is-tag and transformed into BL-21, a bacteria l expression strain, to express this protein. After the expression condition was optimized, the protein can be expressed at high level after having been induced for 3 hours when the inducer— IPTG was at 0.6mmol /L. The protein is soluble in solution, a bacterial protein extraction solution. After the protein solution was diluted in B-per solution, the recombination protein can bind to the Ni-NTA column and be purified highly.关键词：N-Terminal;recombination protein;expression and purification
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发布时间：2024-01-30 - 摘要：This paper deals with species of the family Coralliophilidae (Gastropoda:Muricacea), collected from East China Sea and South China Sea. Of the 14 identified species belonging to 3genera, 3 species are recorded for the first time in China (marked with an asterisk* ).关键词：Coralliophilidae;new record
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发布时间：2024-01-30 - 摘要：The blennioid fishes of the suborder Blennioidei are widely distributed in Chinese coastal waters and the Indo-west Pacific. The fauna composition of the blennioid fishes from Chinese waters is represented by 8 families, 33 gene ra and 78 species. The Chinese blennioid fishes comprise three species types: warm-water, warm-temperate and cold-temperate. The warm-water fishes are large in number, comprise 40 species (51.3% of the total). The warm-temperate fishes are fewer, comprise 28 species (35.9% of the total). The cold-temperate fishes are fewest in number, comprise 10 species (12.8% of the total). According to the geographical distributional character, all the Chinese blennioid fishes are grouped in to four types:(1) the circumtropical-sub tropical type, with 2 species (2.6% of the total); (2) the Indo-West Pacific type, with 24 species (30.8% of the total); (3) the West-Pacific type, with 51 species (65.3% of the total); (4) the endemic type of Chinese waters, with only 1 species (1.3% of the total).关键词：the blennioid fishes;geographical distribution;fauna characteristics
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发布时间：2024-01-30 - 摘要：During the study of genus Laurencia, a new record species, L. omaezakiana was found from the coast of Yellow Sea, China. In the region, two laurencious species, Laurencia saitoi (previous L. obtusa) and L. okamurai had ever been reported. The algal specimens are different to above known ones. Its thallis are composed of many erect axes given rose to general small holdfast and stolon-like b ranches. The branching model, morphological and anatomical characters of the Chinese specimens are almost co incident with those of L. omaezakiana from Japan described by Masuda. The morphology and anatomy from the Chinese specimens are observed in details with structural figures, and compared with other relative species. A s a distinct species with four peraxial cells and corpsencerise, it will be use fu l to marine algae chemistry for secondary metabolites.关键词：Laurencia;morphology;Anatomy
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发布时间：2024-01-30 - 摘要：The green algae of Order Chaetophorales distributed in Yellow-Bohai Sea of China are studied. More 3 species belonging respectively to 3 different genera are reported for the first time, viz. Entocladia virid is Reinke, Pringsheim iella scutata (Reinke) H?hnel ex Marchewianka and Ulvella lens P. L. C rouan et H. M. Crouan, with a simple key. Entoclad ia viridis is different from other species in some features, such as disengaged branches in the external frond with concrescentm idsection to distinct cells, irregular, slight swollen and some time distorted atmidsection, and column at external frond with 5～8 μm diameter and 1～5 times high to diameter. Th is species is found in Qingdao and Yantai, Shandong Province, and inner epiphytic to algae, especially to red algae.关键词：red algae;Yellow-Bohai Sea of China;Chaetophorales
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发布时间：2024-01-30 -
The Morphology and Anatomy of Chondrophycus Intermedius (Yamada) Garbary et Harper from China Coasts
摘要：The hierachical rank of Laurenc ia complex was changed recently and divided into three genera, Chondrophycus, Laurencia and Osmundea. This alga, Chondrophycus intermedius (Yamada) Garbary et Harper distributes mainly along the coasts of East Asia Pacific. The other distributions in other places are also given. In China, ever as Laurencia intermedia, it was described insufficiently, or reported erroneously or mixed up with Chondrophycus palisades (Yamada) K. W. Nam (original L. palisada) and Chondrophycus capituliform is (Yamada) Garbary et Harper (original L.capituliformis). Some questions need to be clarified. Its morphology and anatomy from China coasts specimens are observed in detail with a lot of figures, and compared with other related species. As a distinct species, it differs from C.palisadus (Yamada) K. W. Nam and C.capituliform is (Yamada) Garbary et Harper in the physical characteristics such as sticking to the paper, the shape of cystocarp and the arrangement of superficial cells, and so on. Some questionable distributions are discussed.关键词：morphology;anatomy;Chondrophycus intermedius (Yamada) Garbary et Harper- 106
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发布时间：2024-01-30 - 摘要：Based on GM (0, N) model and statistical theory, a new model was developed. It is shown below:X1(1) =b2 X2(1) +b3 X3(1)… +bn-1XN(1) +Σ (ajcosθi+bjsinθi)+ai The microbenthic annual biomass kinetic model in Jiaozhou Bay is established by using the GM (0, N, σ) model follow as:
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发布时间：2024-01-30 - 摘要：The genetic structure and variation of four wild populations of Pacific abalone, Haliotis discus hannai Ino from Changhai, Lvshun, Weihai and Qingdao had been investigated based on polyacrylamide gel electrophoresis, along with an analysis of genetic diversity. The heterozygosity of these four wild populations are 0.137, 0.145, 0.134 and 0.147, respectively; the proportion of polymorphic loci are 0.524, 0.500, 0.471 and 0.588, respectively, under the criterion p≤0.95 and 0.619, 0.636, 0.529 and 0.588, respectively under the criterion p≤0.99; the number of effective allele in a locus are 1.714, 1.909, 1.706 and 1.765, respective ly; the deviation index from Hardy-Weinberg equilibrium are - 0.057, - 0.026, - 0.044 and - 0.062, respectively.Gpi-1 in Changhai, Gpi-1 andMdh-5 in Lvshun, Est-4 in Weihai and Est-6 in Qindao are significantly deviated from H-W equilibrium. The genetic similarity coefficient shows that Changhai population is far from Qingdao, which is consistent with population's geographical distance.
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发布时间：2024-01-30
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