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Spatial distribution of 10m firn temperature in the Antarctic Ice Sheet

Science china Earth Sciences 2011年第5期54卷 655-666页

作者： wang yetang1,3 & hou shugui2,3 1 shandong marine fisheries research institute,yantai 264006,china 2 MOE,Key Laboratory for Coast and Island Development,School of Geographic and Oceanographic Sciences,Nanjing University,Nanjing 210093,china 3State Key Laboratory of Cryospheric Science,Cold and Arid Regions Environmental and Engineering research institute,Chinese Academy of Sciences,Lanzhou 730000,china 1. shandong marine fisheries research institute Yantai 264006 China3. State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China2. MOE Key Laboratory for Coast and Island Development School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China

A database of Antarctic 10 m firn temperature was constructed using available borehole temperature measurements with data quality control to extend knowledge of Antarctic climate. Slopes from a high-resolution digital elevation model and the main ice divide were used to delineate main drainage sectors across Antarctica. In each drainage sector, a quantitative relationship between temperature and latitude, longitude and altitude was established using available tim temperature data. Quantitative relationships incorporating other factors affecting Antarctic air temperature such as atmospheric circulation and small-scale to- pography were used to derive a 10-km resolution grid map of surface temperature. The resulting temperature patterns presented a reasonable depiction of both large and small-scale variations in Antarctic 10 m firn temperature. This map is useful for many spatial variation studies, Antarctic ice sheet models, and comparison with satellite-derived temperature data and outputs of atmospheric general circulation models.

关键词： Antarctica 10 m firn temperature spatial distribution

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Spatiotemporal variation and freeze-thaw asymmetry of Arctic sea ice in multiple dimensions during 1979 to 2020

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Acta Oceanologica Sinica 2024年第3期43卷 102-114页

作者： Yu Guo Xiaoli wang He Xu Xiyong hou CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China shandong Key Laboratory of Coastal Environmental Processes Yantai 264003China University of Chinese Academy of Sciences Beijing 100049China

Arctic sea ice is broadly regarded as an indicator and amplifier of global climate *** rapid changes in Arctic sea ice have been widely ***,the spatiotemporal changes in the horizontal and vertical dimensions of Arctic sea ice and its asymmetry during the melt and freeze seasons are rarely quantified simultaneously based on multiple sources of the same long time *** this study,the spatiotemporal variation and freeze-thaw asymmetry of Arctic sea ice were investigated from both the horizontal and vertical dimensions during 1979–2020 based on remote sensing and assimilation *** results indicated that Arctic sea ice was declining at a remarkably high rate of–5.4×10^(4) km^(2)/a in sea ice area(SIA)and–2.2 cm/a in sea ice thickness(SIT)during 1979 to 2020,and the reduction of SIA and SIT was the largest in summer and the smallest in ***,compared with other sub-regions,SIA showed a sharper declining trend in the Barents Sea,Kara Sea,and East Siberian Sea,while SIT presented a larger downward trend in the northern Canadian Archipelago,northern Greenland,and the East Siberian *** to the seasonal trend of sea ice on sub-region scale,the reduction rate of SIA exhibited an apparent spatial heterogeneity among seasons,especially in summer and winter,i.e.,the sub-regions linked to the open ocean exhibited a higher decline rate in winter;however,the other sub-regions blocked by the coastlines presented a greater decline rate in *** SIT,the sub-regions such as the Beaufort Sea,East Siberian Sea,Chukchi Sea,Central Arctic,and Canadian Archipelago always showed a higher downward rate in all ***,a striking freeze-thaw asymmetry of Arctic sea ice was also *** sea ice changes in different dimensions,sea ice over most regions in the Arctic showed an early retreat and rapid advance in the horizontal dimension but late melting and gradual freezing in the vertical *** amount of sea ice me

关键词： Arctic sea ice sea ice area sea ice thickness spatiotemporal variation freeze-thaw asymmetry

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Development and characterization of a cell line from the embryos of half smooth tongue sole (Cynoglossus semilaevis)

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Acta Oceanologica Sinica 2010年第2期29卷 81-87页

作者： SHA Zhenxia REN Guocheng wang Xianli wang Na CHEN Songlin Key Laboratory of Sustainable Development of marine fisheries Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fisheries Sciences Qingdao 266071 China College of Biology Shandong Normal University Jinan 250014 China College of marine Life Ocean University of China Qingdao 266003 China

A new cell line, CSEC, has been successfully established from embryos at gastrula stage of a cultured marine fish, half smooth tongue sole （Cynoglossus sernilaevis）. CSEC cells grow actively and stably more than 50 passages for over 200 d in DMEM medium supplemented with 15% FBS （fetal bovine serum）, 2.5 ng/cm^3 bFGF （basic fibroblast growth factor）, 1 ng/cm^3 LIF （leukemia inhibitory factor） and 50 mmol/dm^3 2-ME （2-mecaptoethanol）. The cells grew well in the temperature range of 24-30 ℃ and the optimal growth temperature was 24 ℃. FBS and bFGF concentrations are the two key components for CSEC cells proliferation. Chromosome analysis reveals that CSEC cells have a normal diploid karyotype with 2n=42t. The significant fluorescent signals were observed in CSEC after transfection with the GFP reporter gene, suggesting that the CSEC cell line can be used as a useful tool for transgenic and genetic manipulation studies. CSEC cells showed the cytopathic effect （CPE） after infection with lymphosystis disease virus （LCDV） in 2 d. Moreover, the LCDV particles can be observed in the cytoplasm of virus-infected cells by electron microscopy. It suggests that CSEC could be potentially used for the study of aquatic virus.

关键词： embryonic cell line half smooth tongue sole karyotype GFP LCDV CSEC

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Multi-scenario Simulation and Spatial-temporal Analysis of LUCC in china's Coastal Zone Based on Coupled SD-FLUS Model

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Chinese Geographical Science 2024年第4期34卷 579-598页

作者： hou Xiyong SONG Baiyuan ZHANG Xueying wang Xiaoli LI Dong yantai institute of Coastal Zone research Chinese Academy of SciencesYantai 264003China shandong Key Laboratory of Coastal Environmental Processes Yantai 264003China CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China Shanghai Fuxiong Environmental Technology Corporation Shanghai 200433China

Increased human activities in china's coastal zone have resulted in the depletion of ecological land ***,conducting current and future multi-scenario simulation research on land use and land cover change(LUCC)is crucial for guiding the healthy and sustainable development of coastal *** dynamic(SD)-future land use simulation(FLUS)model,a coupled simulation model,was developed to analyze land use dynamics in china's coastal *** model encompasses five scenarios,namely,SSP1-RCP2.6(A),SSP2-RCP4.5(B),SSP3-RCP4.5(C),SSP4-RCP4.5(D),and SSP5-RCP8.5(E).The SD model simulates land use demand on an annual basis up to the year ***,the FLUS model determines the spatial distribution of land use for the near term(2035),medium term(2050),and long term(2100).Results reveal a slowing trend in land use changes in china's coastal zone from 2000–*** these changes,the expansion rate of construction land was the highest and exhibited an annual *** 2100,land use predictions exhibit high accuracy,and notable differences are observed in trends across *** summary,the expansion of production,living,and ecological spaces toward the sea remains *** A emphasizes reduced land resource dependence,benefiting ecological land *** B witnesses an intensified expansion of artificial *** C sees substantial land needs for living and production,while Scenario D shows coastal forest and grassland ***,in Scenario E,the conflict between humans and land *** study presents pertinent recommendations for the future development,utilization,and management of coastal areas in *** research contributes valuable scientific support for informed,long-term strategic decision making within coastal regions.

关键词： land use and land cover change(LUCC) multi-scenario simulation system dynamic-future land use simulation(SD-FLUS)model SSP-RCP scenarios model coupling china's coastal zone

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Boosting sodium-storage properties of hierarchical Na_(3)V_(2)(PO_(4))_(3)@C micro-flower cathodes by tiny Cr doping:The effect of“four ounces moving a thousand pounds”

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Nano research 2024年第1期17卷 235-244页

作者： Yongjia wang Guoshuai Su Xiaoying Li Linrui hou Longwei Liang Changzhou Yuan School of Materials Science&Engineering University of JinanJinan 250022China

Na_(3)V_(2)(PO_(4))_(3)(NVP),as a great potential cathode candidate for Na-ion batteries(NIBs),has attracted enormous interest due to its three-dimensional(3D)large open framework for convenient Na+transport,yet its practical application is still limited by its inferior electron conductivity and sluggish Na+diffusion ***,the tiny Cr doped hierarchical NVP micro-flower cathodes(i.e.,Na_(3)V_(2-x)Crx(PO_(4))_(3)@C,x≤0.1),which are self-assembled with single-crystal nanoflake subunits in-situ coated with carbon nano-shell,are designed and fabricated via a scalable *** optimized cathode,i.e.,Na_(3)V_(1.94)Cr_(0.06)(PO_(4))_(3)@C(NVCP-6),was endowed with more electro-active Na(2)sites and higher electronic/ionic conductivity for efficient sodium *** from these competitive merits,the NVCP-6,when evaluated as a cathode towards NIBs,exhibits an ultrahigh-rate capability of 99.8 mAh·g^(-1)at 200 C and superior stability of 82.2%over 7300 cycles at 50 ***,the NVCP-6 based full NIBs display remarkable electrochemical properties in terms of both high-rate capacities and long-duration cycling properties at different temperatures(-20–50°C).The contribution,i.e.,the design of“four ounces can move a thousand pounds”,here will promote the practical industrial application of NVP towards advanced NIBs.

关键词： Na_(3)V_(2)(PO_(4))_(3)cathode tiny Cr doping active Na sites ultrahigh-rate capability Na-ion batteries

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Abundance and community of snow bacteria from three glaciers in the Tibetan Plateau

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Journal of Environmental Sciences 2010年第9期22卷 1418-1424页

作者： Shuhong Zhang Guangli Yang yetang wang shugui hou Department of Life Science Shangqiu Normal University Shangqiu 476000 China School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China Cold and Arid Regions Environmental and Engineering research institute Chinese Academy of Sciences Lanzhou 730000 China shandong marine fisheries research institute Yantai 264006 China

Bacterial abundance and diversity in snow of East Rongbuk, Laohugou and Halluogou glaciers on the Tibetan Plateau were investigated through epifluorescence microscope and denaturing gradient gel electrophoresis. Cell abundance ranged from 4.0 × 10^3 to 290.2 × 10^3 cells/mL. The phylogenetic trees placed the 16S rRNA sequences in four major groups： Proteobacteria, Firmicutes, Actinobacteria and Bacteroidetes. Brevundimonas, Flavobacterium, Hymenobacter, Bacillus, Polaromonas, Rhodoferax and Streptomyces were widely distributed bacteria in glaciers from different cold regions. The remaining five genera of Hylemonella, Delftia, Zoogloea, Blastococcus and Rhodococcus were endemism, only recovered from our investigated glaciers. It is proposed that the three glaciers on the Tibetan Plateau provide a specific ecological niche for prolonging survival of diverse microbial lineages.

关键词： bacterial diversity glacial snow the Tibetan Plateau

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3D vertically aligned microchannel structure to enhance piezoelectric energy harvesting performance of PZT/PVDF&CNTs piezoelectric composites

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Journal of Materiomics 2024年第5期10卷 1063-1070页

作者： Limin hou Yu Huan Mupeng Zheng Yilong Liu Chuilei wang Xinjian wang Changxiao Li Zhenxing wang Tao Wei School of Materials Science and Engineering University of JinanJinan250022China Key Laboratory of Advanced Functional Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China Electronic Materials research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric ResearchXi'an Jiaotong UniversityXi'an710049China SICC Co. LtdJinan250000China

Piezoelectric energy harvesters(PEHs)have attracted significant attention with the ability of converting mechanical energy into electrical energy and power the self-powered microelectronic ***,material's superior energy harvesting performance is closely related to its high transduction coefficient(d_(33)×g_(33)),which is dependent on higher piezoelectric coefficient d33 and lower dielectric constantεr of ***,the high d33 and lowεr are difficult to be simultaneously achieved in piezoelectric ***,lead zirconate titanate(PZT)based piezoelectric composites with vertically aligned microchannel structure are constructed by phase-inversion *** polyvinylidene fluoride(PVDF)and carbon nanotubes(CNTs)are mixed as fillers to fabricate PZT/PVDF&CNTs *** unique structure and uniformly distributed CNTs network enhance the polarization and thus improve the *** PVDF filler effectively reduce theε*** a consequence,the excellent piezoelectric coefficient(d_(33)=595 pC/N)and relatively low dielectric constant(ε_(r)=1,603)were obtained in PZT/PVDF&CNTs composites,which generated an ultra-high d_(33)×g_(33) of 24,942×10^(−15) m^(2)/***,the PZT/PVDF&CNTs piezoelectric composites achieve excellent energy harvesting performance(output voltage:66 V,short current:39.22μA,and power density:1.25μW/mm^(2)).Our strategy effectively boosts the performance of piezoelectric-polymer composites,which has certain guiding significance for design of energy harvesters.

关键词： Piezoelectric-polymer composites Phase-inversion method 3D vertically aligned microchannel structure Piezoelectric energy harvester Carbon nanotubes

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Climatology of stable isotopes in Antarctic snow and ice:Current status and prospects

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Chinese Science Bulletin 2013年第10期58卷 1095-1106页

作者： hou shugui wang yetang PANG HongXi Key Laboratory for Coast and Island Development(Ministry of Education) School of Geographic and Oceanographic SciencesNanjing University State Key Laboratory of Cryospheric Science Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences shandong Provincial Key Laboratory of marine Ecological Restoration Shandong Marine Fisheries Research Institute

Stable isotopic composition in Antarctic snow and ice is commonly regarded as one of invaluable palaeoclimate proxies and plays a critically important role in reconstructing past climate *** this paper we summarized the spatial distribution and the controlling factors of δD,δ18O,d-excess and 17O-excess in Antarctic snow and ice,and discussed their reliability and applicability as palaeoclimate *** progress in the stable isotopic records from Antarctic deep ice cores was reviewed,and perspectives on bridging the current understanding gaps were suggested.

关键词：稳定同位素气候变化南极冰雪气候代用指标同位素组成同位素记录控制因素

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Experimental Study on Vortex-Induced Vibration of Rough Risers with Coupling Interference Effect Under Side-by-Side Arrangement

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china Ocean Engineering 2024年第1期38卷 18-28页

作者： HU Ze-bo LIU Zhen LI Peng GUO Hai-yan wang Shu-bing REN Xiao-hui hou Hao wang Ye-shuo College of Civil Engineering and Architecture Shandong University of Science and TechnologyQingdao 266590China Qingdao Key Laboratory of marine Civil Engineering Materials and Structures Qingdao 266590China College of Engineering Ocean University of ChinaQingdao 266100China CHEC Dredging Co. LtdShanghai 200136China

A vortex-induced vibration(VIV)experiment of rough risers with coupling interference effect under a side-by-side arrangement was carried out in a wave-current combined *** roughness of the riser was characterized by arranging different specifications of surface attachments on the surface of the *** risers with three different roughnesses were arranged side by side with smooth risers to explore the VIV response of the riser under the combined action of roughness and interference effect,and to reveal the coupling mechanism between roughness and interference *** experimental results show that,compared with that of a smooth riser,the VIV of a rough riser under the coupling interference effect has a wider"lock-in"region,and the displacement decreases more significantly at a high reduced velocity,which is more likely to excite higher-order modes and frequency *** addition,the displacement response and frequency response of the smooth riser are not significantly affected by wake interference from the rough riser,which is caused by the decrease of the wake region due to the delay of the boundary layer separation point of the rough riser.

关键词： marine riser vortex-induced vibration side-by-side arrangement roughness interference effect

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Tuning electronic structure of RuO_(2)by single atom Zn and oxygen vacancies to boost oxygen evolution reaction in acidic medium

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Journal of Energy Chemistry 2024年第1期88卷 94-102,I0003页

作者： Qing Qin Tiantian wang Zijian Li Guolin Zhang Haeseong Jang Liqiang hou Yu wang Min Gyu Kim Shangguo Liu Xien Liu College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Department of Chemistry City University of Hong KongHong Kong 999077China Department of Advanced Materials Engineering Chung-Ang UniversityAnseong-siGyeonggi-do 17546SeoulRepublic of Korea Beamline research Division Pohang Accelerator Laboratory(PAL)Pohang 37673Gyeongsangbuk-doRepublic of Korea

The poor stability of RuO_(2)electrocatalysts has been the primary obstacles for their practical application in polymer electrolyte membrane *** dramatically enhance the durability of RuO_(2)to construct activity-stability trade-off model is full of significance but ***,a single atom Zn stabilized RuO_(2)with enriched oxygen vacancies(SA Zn-RuO_(2))is developed as a promising alternative to iridium oxide for acidic oxygen evolution reaction(OER).Compared with commercial RuO_(2),the enhanced Ru–O bond strength of SA Zn-RuO_(2)by forming Zn-O-Ru local structure motif is favorable to stabilize surface Ru,while the electrons transferred from Zn single atoms to adjacent Ru atoms protects the Ru active sites from ***,the optimized surrounding electronic structure of Ru sites in SA ZnRuO_(2)decreases the adsorption energies of OER intermediates to reduce the reaction *** a result,the representative SA Zn-RuO_(2)exhibits a low overpotential of 210 mV to achieve 10 mA cm^(-2)and a greatly enhanced durability than commercial RuO_(2).This work provides a promising dual-engineering strategy by coupling single atom doping and vacancy for the tradeoff of high activity and catalytic stability toward acidic OER.

关键词： Electrocatalyst Acidic oxygen evolution reaction Electronic structure engineering Durability Reaction barrier

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