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Analysis of fast ice anomalies and their causes in 2023 in Prydz Bay,East Antarctica

Advances in Climate Change Research 2024年第5期15卷 784-797页

作者： Jun-Hao liU xin-qing li Shao-Yin WANG Zi-xin WEI Feng-Ming HUI Xiao CHENG School of Geospatial Engineering and Science Sun Yat-sen UniversityZhuhai 519082China Key Laboratory of Comprehensive Obseration of Polar Envionment(Sun Yat-sen University) Minitry of EducationZhuhai 982China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China

In 2023,Antarctica experienced its lowest sea ice extent in the satellite era,with extreme polar events gaining widespread *** Bay,where the Chinese Zhongshan Station is located,is the third largest embayment in *** in sea ice,fast ice and polynyas directly affect local heat and mass exchanges between the ocean and atmosphere,as well as ecosystems and research *** 2023,substantial fast ice anomalies were observed in Prydz Bay:the extent of fast ice off Zhongshan Station(ZSFI)was anomalously low,while that within Barrier Bay(BaFI)was anomalously *** study analysed the seasonal evolution and underlying main causes for the extreme conditions using ice charts,satellites and reanalysis *** 2014 to 2022,the extent of zSFI typically increased during the cold season,reaching a maximum of(9.41±2.47)×10^(3) km^(2),whilst the Barrier Bay Polynya(BaP)persisted throughout this ***,in 2023,ZSFI did not increase from June onwards,peaking at a maximum extent of only 5.49×10^(3) km^(2),and the BaP closed in mid-winter,leading to the formation of extensive *** temperature and wind speed continuously dropped in July,and these conditions persisted for approximately 1 month,leading to the closure of ***,zSFI did not expand further under these extreme meteorological conditions,indicating its independence from these *** limited expansion of ZSFI could be attributed to high ocean ***,this study provides valuable insights into the mechanisms driving extreme fast ice conditions.

关键词： Fast ice Prydz Bay Atmospheric circulation Southern ocean warming

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Micro-porous TiO2 thin films grown on surface of Ti substrate

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 178-181页

作者： WU Xiao-hong QIN Wei JIANG Zhao-hua HU xin-guo li qing-fen Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China School of Mechanics and Electronics Engineering Harbin Engineering University Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China School of Mechanics and Electronics EngineeringHarbin Engineering University Harbin 150001 China

Microporous titanium dioxide thin films have been grown on titanium plates by the micro-plasma oxidation method with different current densities (4, 6, 10 and 14 A/dm2). X-ray diffraction, scanning electronic microscopy and UV-Vis spectrophotometry were used to characterize the films. It is found that the films grown are microporous and consist of crystalline titanium dioxide. The micropore size and the content of anatase and rutile TiO2 phase increase with the applied voltage. The relatively higher degradation efficiency for rhodamine B is obtained in the film produced with a current density of 10 A/dm2.

关键词： micro-plasma oxidation TiO2 thin film photo-catalytic activity rhodamine B

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Thickness simulation of landfast ice along Mawson Coast,East Antarctica based on a snow/ice high-resolution thermodynamic model

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Advances in Climate Change Research 2022年第3期13卷 375-384页

作者： xin-qing li Feng-Ming HUI Jie-Chen ZHAO Meng-Xi ZHAI Xiao CHENG School of Geospatial Engineering and Science Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Harbin Engineering University qingdao Graduate School Qingdao Innovation and Development Base(Center)of Harin Engineering UniversityQingdao266000China MNR Key Laboratory for Polar Science Polar Research Institute of ChinaShanghai 200136China

Landfast ice plays an important role in atmosphere‒ocean interactions and ecosystems in the near coast area of *** the characteristics and variations of landfast ice is crucial to the study of climates and field activities in *** this study,a high-resolution thermodynamic snow-ice(HIGHTSI)model was applied to simulate the seasonal changes of landfast ice along the Mawson Coast,East Antarctica,through ERA-Interim reanalysis *** ocean heat-flux(Fw)values(10,15,20 and 25 W m−2)were used in sensitivity *** results showed that it is reasonable to simulate landfast ice using the HIGHTSI model,and the simulation of landfast ice thickness matched best well with field measurements when Fw was 20 W m^(−2).Then,2-D distributions of landfast ice from 2006 to 2018 were modeled by HIGHTSI with 2-D ERA-Interim reanalysis data in a 0.125°×0.125°cell grid as external *** results showed that fast ice was thicker along the coast and thinner near open water,and usually reaches its maximal thickness in October,varying from 1.2 to 2.0 m through the study *** was no statistical trend for the thickness during the study period.

关键词： Landfast ice Modeling HIGHTSI Antarctica

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Navigability of the Northern Sea Route for Arc7 ice-class vessels during winter and spring sea-ice conditions

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Advances in Climate Change Research 2022年第5期13卷 676-687页

作者： Shi-Yi CHEN Stefan KERN xin-qing li Feng-Ming HUI Yu-Fang YE Xiao CHENG School of Geospatial Engineering and Science Sun Yat-sen UniversityAnd Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Integrated Climate Data Center(ICDC) Center for Earth System Research and Sustainability(CEN)University of HamburgHamburg D-20144Germany

Sea ice hinders the navigability of the Arctic,especially in winter and ***,three Arc7 ice-class liquefied Natural Gas carrying vessels safely transited the Northern Sea Route(NSR)without icebreaker assistance in January *** and more Arc7 ice-class vessels are putting into the transit services in the ***,it is necessary to analyze sea-ice conditions and their impact on navigation during wintertime,and the future navigability of Arc7 ice-class vessels along the NSR during winter and *** on sea ice datasets from satellite observations and a model using data assimilation,we explored the sea-ice conditions and their impact during the first three successful commercial voyages through the NSR in *** addition,we analyzed the sea ice variation and estimated navigability for Arc7 ice-class vessels in the NSR from January to June of the years 2021–2050 using future projections of the sea-ice cover by the Coupled Model Inter-comparison Project Phase 6(CMIP6)models under two emission scenarios(SSP2-4.5 and SSP5-8.5).The results reveal lower sea ice thickness and similar sea ice concentration during these three transits relative to the past 42 years(from 1979 to 2020).We found the thickness has a larger impact on the vessels’speeds than sea ice *** likely sea ice thickness played a larger role than the sea ice concentration for the successful transit of the NSR in winter *** projections suggest sea ice thickness will decrease further in most regions of the NSR from January to June under all scenarios enabling increased navigability of the NSR for Arc7 ice-class *** vessels could transit through the NSR from January to June under all scenarios by 2050,while some areas near the coast of East Siberian Sea remain inaccessible for Arc7 ice-class vessels in spring(April and May).These findings can support the strategic planning of shipping along the NSR in winter and spring.

关键词： Northern sea route Arc7 ice-class vessel Sea ice thickness Sea ice concentration Navigability Arctic

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Clinical efficacy of endovascular revascularization combined with vacuum-assisted closure for the treatment of diabetic foot

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World Journal of Diabetes 2024年第7期15卷 1499-1508页

作者： Feng-Rui Lei Xiao-Fei Shen Chuang Zhang xin-qing li Hao Zhuang Hong-Fei Sang Department of Vascular Surgery The Second Affiliated Hospital of Soochow UniversitySuzhou 215004Jiangsu ProvinceChina

BACKGROUND The diabetic foot is a common cause of disability and death,and comorbid foot infections usually lead to prolonged hospitalization,high healthcare costs,and a significant increase in amputation *** most diabetic foot trauma is complicated by lower extremity arteriopathy,which becomes an independent risk factor for major amputation in diabetic foot *** To establish the efficacy and safety of endovascular revascularization(ER)combined with vacuum-assisted closure(VAC)for the treatment of diabetic *** Clinical data were collected from 40 patients with diabetic foot admitted to the Second Affiliated Hospital of Soochow University from April 2018 to April *** foot lesions were graded according to Wagner’s classification,and blood flow to the lower extremity was evaluated using the ankle-brachial index test and computerized tomography angiography of the lower extremity *** subcutaneous insulin infusion pumps were used to achieve glycemic *** limb revascularization was facilitated by percutaneous transluminal balloon angioplasty(BA)or *** were cleaned by nibbling *** granulation tissue growth was induced by VAC,and wound repair was performed by skin grafting or skin flap *** Of the 35 cases treated with lower limb revascularization,34 were successful with a revascularization success rate of 97%.Of these,6 cases underwent stenting after BA of the superficial femoral artery,and 1 received popliteal artery stent *** the 25 cases treated with infrapopliteal artery revascularization,39 arteries were reconstructed,7 of which were treated by drug-coated BA and the remaining 32 with plain old *** was performed in 32 ***-four cases of skin grafting and 2 cases of skin flap transplantation were *** patients underwent major amputations,whereas 17 had minor amputations,accounting for a success limb salvage rate of 95%.CONCLUSION ER in

关键词： Diabetic foot Revascularization Vacuum-assisted closure Balloon angioplasty Wound repair

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全动操纵面系统中摩擦参数测量方法研究

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工程力学 2017年第10期34卷 239-248页

作者：辛庆利李敏赵亮北京航空航天大学航空科学与工程学院北京100191

通过解析方法和数值方法研究了库仑摩擦对结构动响应的影响规律。利用库仑摩擦在时域上能够傅里叶展开为方波函数的特点,得到含库仑摩擦的单自由度系统在简谐激励下的级数响应,结果表明,库仑摩擦的引入导致结构的频域响应中,除了激振频... 详细信息

通过解析方法和数值方法研究了库仑摩擦对结构动响应的影响规律。利用库仑摩擦在时域上能够傅里叶展开为方波函数的特点,得到含库仑摩擦的单自由度系统在简谐激励下的级数响应,结果表明,库仑摩擦的引入导致结构的频域响应中,除了激振频率成分外,还会有奇数倍频的成分,在激振频率为0.605倍固有频率时,奇数倍频成分与激振频率成分的幅值比例是摩擦力的线性函数。通过数值方法证明,上述规律能够推广到二自由度的全动操纵面模型中。利用这一规律,通过动响应试验的方法测量出全动操纵面系统中的库仑摩擦参数,并验证了这种方法的正确性。

关键词：摩擦测量库仑摩擦结构动响应奇数倍频线性关系

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对提高人才培养质量有高影响力的教育教学举措——美国大学与学院联合会LEAP项目启思

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大学教育科学 2015年第6期 50-55页

作者：乔连全辛丽清厦门大学教育研究院

人才培养是高校的基本职能。高校培养什么样的人及如何培养是相互关联的两个关键问题。美国大学与学院联合会历经十年打造的项目——自由教育与美国承诺(LEAP)就致力于解决这两个问题。该项目一方面突破传统的学业成功指标,提出新时代... 详细信息

人才培养是高校的基本职能。高校培养什么样的人及如何培养是相互关联的两个关键问题。美国大学与学院联合会历经十年打造的项目——自由教育与美国承诺(LEAP)就致力于解决这两个问题。该项目一方面突破传统的学业成功指标,提出新时代背景下高校学生应予掌握的四项重要学习结果,并结合相关研究提出了有助于达成重要学习结果的十项教育教学举措。对我国高校而言,明晰作为顶层设计核心的人才培养理念、提升学习品质、整合通识与专业学习、构建基于研究与实践的教育教学举措将有助于切实提高人才培养质量。

关键词：人才培养高影响力教学举措美国LEAP

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Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： Hai-Sheng Zhao Dong li Shao-lin Xiong Yan-Qiu Zhang Yang Su Wei Chen Yi Zhao Xiao-Bo li Jia-Cong liu Wen-Xi Peng Rui Qiao xin-Qiao li Xiang-Yang Wen li-Ming Song Shi-Jie Zheng xin-Ying Song Xiao-Yun Zhao Yue Huang Shuang-Nan Zhang Shuo Xiao Ce Cai Zheng-Hua An Can Chen Gang Chen Wei Chen Yan-Qi Du Min Gao Ke Gong Dong-Ya Guo Zhi-Wei Guo Jian-Jian He Bin li Chao li Chao-Yang li Gang li Jian-Hui li Lu li qing-xin li Yan-Guo li Jing liang Xiao-Hua liang Jin-Yuan liao Xiao-Jing liu Ya-qing liu Qi Luo Xiang Ma Bin Meng Ge Ou Dong-li Shi Jing-Yan Shi Gong-xing Sun Xi-Lei Sun You-li Tuo Chen-Wei Wang Hui Wang Jin Wang Jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong Wu Sheng-Lun Xie Yan-Bing Xu Yu-Peng Xu Wang-Chen Xue Sheng Yang Min Yao Jian-Ying Ye Qi-Bin Yi Chao-Yue Zhang Da-li Zhang Fan Zhang Fei Zhang Hong-Mei Zhang Kai Zhang Peng Zhang Xiao-Lu Zhang Zhen Zhang Guo-Ying Zhao Shi-Yi Zhao Chao Zheng xing Zhou Yue Zhu Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and Engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope Network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

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印章结构对微接触印刷制备导电网格的影响

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无机材料学报 2017年第7期32卷 713-718页

作者：辛智青李修姬磊李泽涛项飞翔刘世丽李路海北京印刷学院印刷与包装工程学院北京市印刷电子工程技术研究中心北京102600

为了在PET基底上制备精细的透明网格状导电图案,本工作利用微接触印刷高精度的优势,分别采用线条结构和网格结构的印章转印银纳米粒子导电油墨,分析了其转印过程,并讨论了印章结构对网格图案性能的影响。结果表明:采用线条结构的印章可... 详细信息

为了在PET基底上制备精细的透明网格状导电图案,本工作利用微接触印刷高精度的优势,分别采用线条结构和网格结构的印章转印银纳米粒子导电油墨,分析了其转印过程,并讨论了印章结构对网格图案性能的影响。结果表明:采用线条结构的印章可真实还原印章设计尺寸,避免了线条的扩展,有利于提高网格图案的透光率;同时,在交叉处墨层较厚可提高导电性。而采用网格结构印章可一次转移快速获得网格图案,但由于印章网格上相邻线条之间液桥的形成会使图案线宽增加,降低其透光率;采用间距较大的印章可使液桥断裂,得到边缘光滑的网格图案,但间距增大导致单位面积导电路径减少,降低其导电性。总之,采用线条结构印章有利于获得性能较好的网格图案,但两次转移过程相对复杂,需用时间较长。

关键词：微接触印刷网格图案导电油墨银纳米粒子

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Population-based study of DNA image cytometry as screening method for esophageal cancer

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World Journal of Gastroenterology 2012年第4期18卷 375-382页

作者： lin Zhao,Wen-Qiang Wei,xin-qing li,Guo-qing Wang,Qi Shang,You-lin Qiao,Department of Cancer Epidemiology,Cancer Institute/Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100021,China De-li Zhao,Department of Epidemiology,Feicheng People’s Hospital,Feicheng 271600,Shandong Province,China Chang-qing Hao,Department of Endoscopy,linzhou Cancer Hospital,linzhou 456500,Henan Province,China Dong-Mei lin,Qin-Jing Pan,Department of Pathology,Cancer Institute/Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100021,China Fu-Hua Lei,Department of Pathology,Feicheng People’s Hospi-tal,Feicheng 271600,Shandong Province,China Jin-Wu Wang,Department of Pathology,linzhou Cancer Hospi-tal,linzhou 456500,Henan Province,China Department of Cancer Epidemiology Cancer Institute/Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100021 China.

AIM:To explore the DNA image cytometry (DNA-ICM) technique as a primary screening method for esopha-geal squamous precancerous ***:This study was designed as a population-based screening study.A total of 582 local residents aged 40 years-69 years were recruited from linzhou in Henan and Feicheng in ***,only 452 subjects had results of liquid-based cytology,DNA-ICM and *** sensitivity and specificity of DNA-ICM were calculated and compared with liquid-based cytology in moderate dysplasia or ***:Sensitivities of DNA-ICM ranging from at least 1 to 4 aneuploid cells were 90.91%,86.36%,79.55% and 77.27%,respectively,which were better than that of liquid-based cytology (75%).Specifici-ties of DNA-ICM were 70.83%,84.07%,92.65% and 96.81%,but the specificity of liquid-based cytology was 91.91%.The sensitivity and specificity of a combination of liquid-based cytology and DNA-ICM were 84.09% and 85.78%,***:It is possible to use DNA-ICM tech-nique as a primary screening method for esophageal squamous precancerous lesions.

关键词： DNA image cytometry Aneuploidy Screen-ing Esophageal cancer Precancerous lesions

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