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Ceuthonoe nezhai *** sp.n.(Polynoidae:Polynoinae)commensal with sponges from Weijia Guyot,western Pacific

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Acta Oceanologica Sinica 2021年第12期40卷 90-103页

作者： Yueyun Wang Yadong Zhou Chunsheng Wang Second Institute of Oceanography Ministry of Natural ResourcesHangzhou 310012China Key Laboratory of Marine Ecosystem Dynamics Ministry of Natural ResourcesHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China Southern Marine science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China

Ceuthonoe,a new genus with type species *** *** with euplectellid glass sponge(Hexactinellida:Euplectellidae),is described and illustrated,based on the material collected from Weijia Guyot,western *** new genus is distinguished by a combination of characters:body with 32 segments;14 pairs of elytra;prostomium with prominent cephalic peaks and facial tubercle;aciculae and chaetae on tentaculophores;biramous parapodium,each ramus with a long aciculum penetrating epidermis,without supraor subacicular process;and noto-and neurochaetae with unidentate *** *** mostly silimar to genera of Polynoinae in *** the phylogenetic analysis based on cytochrome c oxidase subunit I,16 S,18 S,and 28 S genes suggested that this new genus was separated from the main branch of *** study also discussed the genera related to the new genus.

关键词： new genus new species Polynoidae taxonomy

Alentiana palinpoda,a new commensal polynoid species from a seamount in the Northwest Pacific Ocean

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Acta Oceanologica Sinica 2021年第12期40卷 12-19页

Alentiana has only one member,***(Verrill,1885),commensal with sea anemone(Bolocera tuediae).Here,Alentiana palinpoda ***.,a second member in the genus Alentiana(subfamily Lepidastheniinae),a new commensal polynoid is described,based on a specimen collected from a deep-water seamount in the Northwest Pacific *** new species is characterized by large elytra that completely cover the dorsum and are present in every third segment in the posterior *** are truncated,with two types of neurochaetae;supraacicular chaetae toothed on one side with a slightly inflated end,and subacicular chaetae that are heavy and smooth;the prechaetal lobe is larger than the postchaetal lobe,with the ventral part rolling upward and backward.

关键词： Polynoidae new species systematics taxonomy commensalism

A new species of Leodamas Kinberg, 1866 (Polychaeta： Orbiniidae) from the Yellow Sea and the East china Sea

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Acta Oceanologica Sinica 2018年第10期37卷 130-135页

作者： SUN Yue SUI Jixing LI Xinzheng Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection Jiangsu Synthetic Innovation Center for Coastal Bio-agriculture Jiangsu Key Laboratory for Bioresources of Saline Soils Yancheng Teachers University Yancheng 224051 China Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Center for Ocean Mega-science Chinese Academy of Sciences Qingdao 266071 China University of Chinese Academy of sciences Beijing 100049 China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao 266237 China

Based on polychaete specimens collected from coastal areas of china in 1959, a new species of the family Orbiniidae, Leodamas sinensis sp. nov. is described in the present paper. The new species can be distinguished from its cogeners by the combination of following characters： branchiae present from chaetiger 5; each thoracic neuropodial postchaetal lobe possessing broad tori, with a digital to triangular-shaped papilla at its midlength; 4 or 5 vertical rows of uncini and one posterior row of accompany capillaries in thoracic neuropodia; acicula present in both abdominal notopodia and neuropodia, slightly or distinctly projecting. A key to all known species of the genus is provided.

关键词： new species Orbiniidae Polychaeta Leodamas taxonomy china seas

Sabaco sinicus, a new species of Maldanidae (Annelida： Polychaeta) from Chinese coast waters

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Acta Oceanologica Sinica 2018年第10期37卷 136-139页

作者： WANG Yueyun LI Xinzheng Key Laboratory of Marine Ecosystem and Biogeochemistry Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao 266237 China Center for Ocean Mega-science Chinese Academy of Sciences Qingdao 266071 China Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China University of Chinese Academy of sciences Beijing 100049 China

Sabaco sinicus sp. nov. is described based on material collected from Chinese coast. It has been misidentified as Asychis gangeticus Fauvel, 1932 since Uschakov and Wu （1962）. Here, we recognized it as a new species based on combination of the following characters： dark-brown pigmentation spots on nuchal grooves and first three chaetigers; glandular pattern on chaetigers 4-6; preanal achaetigerous segments absent; anal plaque trumpet- shaped with a disc-shaped dorsal lobe; notochaetae consisting of geniculate capillaries and fine capillaries with or without spinose spiral bands; neurochaetae presented as a single row of rostrate uncini. Asychis gangeticus differ from the new species in having no pigmentations on body and a triangular dorsal lobe of anal plaque. Distribution region of this species have moved northward significantly from sea area south of Changjiang Estuary since the 1950s.

关键词： Polychaeta Maldanidae Maldaninae taxonomy china seas

Surface Reaction of TiAl with Water Vapor and Oxygen

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Journal of Materials science & Technology 2003年第4期19卷 334-336页

作者： YexinCHEN XiaojingWAN WeixinXU InstituteofMaterials ShanghaiUniversityShanghai200072China ShanghaiIronandSteelResearchInstitute Shanghai200940China

The interaction of water vapor and oxygen with TiAI-based alloy has been studied with Auger electron spectroscopy and X-ray photoelectron spectroscopy. The results indicate that both surface reactions initiate at a very short exposure (about 6×10-7 Pa·s) and the oxides Al2O3 and TiO2 form in the surface reactions. In the oxidizing reaction, the water vapor reacts firstly with Al, and then reacts with Ti after certain exposure. The surface reaction of Al with water vapor may be responsible for the environmental embrittlement at room temperature in TiAI-based alloy.

关键词： Surface reaction XPS TiAl alloy

Close-in weapon system planning based on multi-living agent theory

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Defence Technology（防务技术） 2022年第7期18卷 1219-1231页

作者： Tang Tang Yue Wang Li-juan Jia Jin Hu Cheng Ma School of Information and Electronic Beijing Institute of TechnologyBeijing100081China

The close-in weapon system(CIWS)is a combat system that faces a complex environment full of dynamic and unknown challenges,whose construction and planning require a systematic design *** agent(MLA)theory is a methodology for the combat system design,which uses the livelihood degree to evaluate the multi-dimensional long-term operational effectiveness of the system;whereas,there is still no uniform quantization framework for the livelihood degree,and the adjustment methods of livelihood degree need to be further *** this paper,we propose the uniform quantization framework for the livelihood degree and detailed discuss the methods of livelihood *** on the MLA theory,the multi-dimensional operational effectiveness of the missile-gun integrated weapon system(MGIWS)is analyzed,and the long-term combat effectiveness against the saturation attack is ***,the planning problem of the equipment deployment and configuration is *** objectives,including the overall livelihood degree and cost-effectiveness(CE),are proposed,and the optimization method based on genetic algorithm(GA)is studied for the planning problem.

关键词： Multi-living agent theory Close-in weapon system Effectiveness evaluation Livelihood degree Queueing system Missile-gun integrated weapon system

Experimental Study of Flow Patterns and Improved Configurations for Pulsating Heat Pipes

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Journal of Thermal science 2007年第1期16卷 56-62页

作者： Shi LIU Jingtao LI Xiangyuan DONG Huanzhuo CHEN Institute of Engineering Thermophysics Chinese Academy of Sciences EO. Box 2706 Beijing 100080 China

A series of experiments were performed on three types of closed loop pulsating heat pipes （PHPs）, intending to investigate various kinds of flow patterns, and to develop some improved configurations for the PHPs. Optical visualization results indicated that there might exist three flow patterns, i.e. bubble-liquid slug flow, semi-annular flow and annular flow, corresponding to different working conditions. For a given geometry and an adequate fill ratio, the PHPs had the self-adjusting characteristic for the flow patterns （from slug flow to semi-annular and then to annular flow） to meet the demands of the increasing heat input. Two special configurations, one with alternately varying channel diameter, the other equipped with one section of thicker tube, were found to be advantageous in establishing and maintaining reliable circulation of the working fluid. The thermal performance of the PHPs was examined over a range of working conditions. Comparing with the normal PHP with uniform diameter, either of the improved PHPs exhibited higher thermal performance.

关键词： pulsating heat pipe flow patterns improved configurations.

Optical flow-based method to estimate internal wave parameters from X-band marine radar images

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Acta Oceanologica Sinica 2022年第9期41卷 149-157页

作者： Jinghan Wen Zhongbiao Chen Yijun He School of Marine sciences Nanjing University of Information Science&TechnologyNanjing210044China Key Laboratory of Space Ocean Remote Sensing and Applications National Satellite Ocean Application ServiceBeijing100081China

The velocity and direction of internal waves(IWs) are important parameters of the ocean,however,traditional observation methods can only obtain the average parameters of IWs for a single location or large ***,a new method based on optical flow is proposed to derive the phase velocity vectors of IWs from X-band marine radar ***,the X-band marine radar image sequence is averaged,and ramp correction is used to reduce the attenuation of gray values with increasing radial ***,the average propagation direction of the IWs is determined using the two-dimensional Fourier transform of the radar images;two radial profiles along this direction are selected from two adjacent radar images;and then,the average phase velocity of the IWs is estimated from these radial ***,the averaged radar images are processed via histogram equalization and binarization to reduce the influence of noise on the radar ***,a weighting factor is determined using the average phase velocity of a reference point;the phase velocities on the wave crest of the IWs are subsequently estimated via the optical flow ***,the proposed method is validated using X-band marine radar image sequences observed on an oil platform in the South china Sea,and the error of the phase velocity is calculated to be 0.000 3–0.073 8 m/*** application conditions of the proposed method are also discussed using two different types of IW packets.

关键词： internal wave X-band marine radar optical flow phase velocity

A parameterization scheme of vertical mixing due to inertial internal wave breaking in the ocean general circulation model

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Acta Oceanologica Sinica 2015年第1期34卷 11-22页

作者： FAN Zhisong SHANG Zhenqi ZHANG Shanwu HU Ruijin LIU Hailong College of Physical and Environmental Oceanography Ocean University of China The Third Institute of Oceanography State Oceanic Administration State Key Laboratory of Numerical Modeling for Atmospheric sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of Sciences

Based on the theoretical spectral model of inertial internal wave breaking （fine structure） proposed previ- ously, in which the effects of the horizontal Coriolis frequency component f-tilde on a potential isopycnal are taken into account, a parameterization scheme of vertical mixing in the stably stratified interior be- low the surface mixed layer in the ocean general circulation model （OGCM） is put forward preliminarily in this paper. Besides turbulence, the impact of sub-mesoscale oceanic processes （including inertial internal wave breaking product） on oceanic interior mixing is emphasized. We suggest that adding the inertial inter- hal wave breaking mixing scheme （F-scheme for short） put forward in this paper to the turbulence mixing scheme of Canuto et al. （T-scheme for short） in the OGCM, except the region from 15°S to 15°N. The numeri- cal results ofF-scheme by usingWOA09 data and an OGCM （LICOM, LASG/IAP climate system ocean model） over the global ocean are given. A notable improvement in the simulation of salinity and temperature over the global ocean is attained by using T-scheme adding F-scheme, especially in the mid- and high-latitude regions in the simulation of the intermediate water and deep water. We conjecture that the inertial internal wave breaking mixing and inertial forcing of wind might be one of important mechanisms maintaining the ventilation process. The modeling strength of the Atlantic meridional overturning circulation （AMOC） by using T-scheme adding F-scheme may be more reasonable than that by using T-scheme alone, though the physical processes need to be further studied, and the overflow parameterization needs to be incorporated. A shortcoming in F-scheme is that in this paper the error of simulated salinity and temperature by using T-scheme adding F-scheme is larger than that by using T-scheme alone in the subsurface layer.

关键词： vertical mixing inertial internal wave fine structure horizontal Coriolis frequency component,ocean general circulation model