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Propagating subduction initiation of the Caroline Plate at the Mussau Trench

Science China Earth Sciences 2025年第1期68卷 253-269页

作者： Chun-Feng li Yongkang DENG tao WU Dongdong DONG Guoliang ZHANG Jiazheng ZHANG Yutao liU Yaqing li Fugui TANG Lulu ZHANG Department of Marine Sciences Zhejiang UniversityZhoushan316021China Laboratory of Marine Mineral Resources Laoshan LaboratoryQingdao266237China Key Lab of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao266071China Key Lab of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou510301China Science&Technology on Integrated Information System Lab Institute of SoftwareChinese Academy of SciencesBeijing100190China

New seismic imaging from the Mussau Trench confirms that,under horizontal compression on an oceanic plate boundary,it is within the young and weak oceanic plate that a trench will develop,and it is the young plate,not so long after its birth,that starts to subduct toward the old *** Mesozoic Pacific Plate cannot easily bend,under the joint horizontal compression and vertical gravity pull,even with a pre-existing weak zone in place and with a large age offset across the plate *** bending of the Caroline Plate near the northern end of the Mussau Trench started only after a long-time span of trench migration,and/or after a prolonged transition from initial compression to trench *** contrasting trench deformation and sedimentary accretion between two parallel seismic sections support an evident migration of underthrusting or significant longitudinal heterogeneity along the *** swift transition from underthrusting to non-thrusting can be explained by a counter-clockwise rotation of the Caroline *** miniature accretionary wedges develop even before the subduction initiates imply strong compression and uplifting before the underthrusting can *** of the Caroline Plate have been halted as the Mussau Trench is seismically rather quiet and the Lyra Trough to the east shows relaxational extension.

关键词： Mussau Trench Subduction initiation Seismic reflection Caroline Plate

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Distribution and mapping of temperate savanna in the sandy lands of eastern China

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Science China Earth Sciences 2025年第1期68卷 128-141页

作者： Xiaoya li Feng WANG tao DUAN Kaijie YANG Bin YANG Chunmei WANG Xin TIAN Qi LU Institute of Ecological Conservation and Restoration Institute of Desertification StudiesChinese Academy of ForestryBeijing100091China Institute of Desertification Institute of Desertification StudiesChinese Academy of ForestryBeijing100091China Institute of Great Green Wall Bayan Nur015200China Satellite Application Centre for Ecology and Environment MEEBeijing100094China Institute of Microelectronics Chinese Academy of SciencesBeijing100029China Aerospace Information Research Institute Chinese Academy of SciencesBeijing100094China Institute of Forest Resource Information Techniques Chinese Academy of ForestryBeijing100091China

Savannas are distributed globally across various *** perform a significant socioeconomic role in regulating net primary productivity and the terrestrial carbon *** to the high spatial heterogeneity induced by the mixed distribution of trees and grasses,current global land-cover classification maps often classify savannas as forests or grasslands Temperate savannas in China cover a vast area,yet their spatial patterns and extent remain poorly *** study developed a novel remote sensing temperate savannas mapping method by integrating very high-resolution(VHR)unmanned aerial vehicle(UAV)and GF-6 satellite imagery based on the vegetation structure characteristics of temperate savannas using the FAO definition of *** and validation datasets were collected from VHR UAV imagery covering the main temperate savannah types with a ground area of 1818 *** fractional woody vegetation cover(FWVC)and fractional herbaceous vegetation cover(FHVC)in temperate savannas were estimated by integrating Classification and Regression Tree and Random Forest *** current distribution of temperate savannas in the Horqin and Otindag Sandy Lands of Eastern China was mapped to a unit area of 0.5 *** root-mean-square error(RMSE)values for the FWVC and FHVC models were 10.69%and 11.67%,and the R^(2)values were 0.66 and 0.63,*** assessment indicated that the new temperate savanna map had high identification accuracy,with a Kappa coefficient of 0.70,overall accuracy of 0.88,and average accuracy of *** savannas in the sandy lands of eastern China were primarily distributed in the northern Horqin Sandy Land the central and eastern regions of the Otindag Sandy Land,and the transition zone from the southern slopes of the Greater Khingan Mountains to the plains,covering a total area of 3.27×10^(6)*** main savannah types were elm,oak/maple,and shrub *** savannas were widely distributed in the Otindag Sandy Land a

关键词： Temperate savanna UAV imagery GF-6 Fractional woody vegetation cover Fractional herbaceous vegetation cover Machine learning

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Potassium ion doped manganese oxide nanoscrolls enhanced the performance of aqueous zinc-ion batteries

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Chinese Chemical Letters 2025年第1期36卷 549-555页

作者： Yang li Xiaoxu liu Tianyi Ji Man Zhang Xueru Yan Mengjie Yao Dawei sheng Shaodong li Peipei Ren Zexiang Shen Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Material Science and EngineeringShaanxi University of Science and TechnologyXi’an 710021China Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore

α-MnO_(2) is a potential positive electrode material for aqueous zinc-ion batteries,but its electrochemical performance of zinc storage requires further *** this paper,potassium ion-doped manganese dioxide nanoscrolls(K-MnO_(2))with oxygen vacancy were synthesized by a one-step hydrothermal *** was observed that the electrochemical specific capacity was 250.9 m Ah/g at a current density of 0.2 C,which was better than the existing commercialα-MnO_(2).At a high current of 1 C,these batteries demonstrate improved cycle *** radiation and other experiments as well as DFT theoretical calculations provided additional evidence that K doping was efficient in regulating the metal bond type and the mean charge regulation of covalent bonds with oxygen atoms in MnO_(2).When Mn-O and Mn-K bonds are present,K-MnO_(2) showed outstanding adsorption of Zn~(2+)and further enhanced the Zn^(2+)embedding ***,oxygen defects caused by doping boosted the development of the nanoscroll structure,leading to an increase in active sites available for electrochemical reactions and subsequently enhancing the electrical conductivity ofα-MnO_(2).This study exhibits the potential of optimizing materials based on manganese with the introduction of a potassium doping strategy,resulting in improved performance for aquatic zinc-ion batteries,and presents novel perspectives for related research.

关键词： Manganese dioxide K^(+) doping Nanoscrolls XAFS Aqueous zinc-ion batteries

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针灸治疗术后恶心呕吐的国外研究进展

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中国临床康复 2006年第47期10卷 112-114页

作者：陈敏李胜涛郑晖成都中医药大学针灸推拿学院四川省成都市610075

目的:分析和总结近年来国外使用针灸治疗术后恶心呕吐的有效性及其作用途径。资料来源:应用计算机检索Pubmed1990-01/2006-08有关国外使用针灸治疗术后恶心呕吐的文章,检索词“PONV,acupuncture,moxibustion,acupress,Postoperative,nau... 详细信息

目的:分析和总结近年来国外使用针灸治疗术后恶心呕吐的有效性及其作用途径。资料来源:应用计算机检索Pubmed1990-01/2006-08有关国外使用针灸治疗术后恶心呕吐的文章,检索词“PONV,acupuncture,moxibustion,acupress,Postoperative,nausea,vomit”,并限定文章语言种类为English。资料选择:对检索到的有关国外使用针灸治疗术后恶心呕吐的有效性及其作用途径方面的文章进行整理,选取针对性强的文章。同一领域内容相似的文章选择近期发表或权威杂志的文章。资料提炼:共检索到41篇相关文献,其中20篇文章符合要求,排除的21篇文章为重复研究。资料综合:术后恶心呕吐是手术和麻醉术后最为常见的并发症,针灸治疗术后恶心呕吐在国外运用较为广泛,但由于穴位、针灸方法的选择以及针灸介入时间的不同,导致临床效果不一致。而针灸治疗术后恶心呕吐的机制研究较少,目前认为可能是通过激活肾上腺素能和去甲肾上腺素能纤维来改变5-羟色胺的传递来治疗恶心呕吐的。结论:国外使用针灸治疗术后恶心呕吐的疗效逐渐得到人们的认可,而目前的临床研究对针灸的疗效尚无统一肯定的确认,还需要多中心大样本的临床随机对照试验进行证实。而关于这方面的作用机制研究较少,更需要进一步研究为临床提供理论依据。

关键词：手术后恶心呕吐/针灸疗法手术后并发症

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O/W型交联乳化压裂液配方研究

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钻井液与完井液 2005年第2期22卷 38-40页

作者：李圣涛陈馥李圣勇竭继忠西南石油学院化学化工学院中石油销售公司西藏分公司七二五油库吉林油田分公司前大采油厂

研制了一种交联O/W型乳化体系用作水力压裂的压裂液。它是通过采用复合乳化剂,应用D相乳化法,将油相以体积比为50∶50的比例分散于交联的HPG溶液相中得到的一种多相分散体系。该体系在80 ℃、170s-1下剪切,粘度可达到446.9 mPa·s,剪切... 详细信息

研制了一种交联O/W型乳化体系用作水力压裂的压裂液。它是通过采用复合乳化剂,应用D相乳化法,将油相以体积比为50∶50的比例分散于交联的HPG溶液相中得到的一种多相分散体系。该体系在80 ℃、170s-1下剪切,粘度可达到446.9 mPa·s,剪切2 h后粘度仍大于100 mPa·s;破胶后粘度降为2 mPa·s,压裂残渣含量仅为166 mg/L,能大大减少压裂液在裂缝中的滞留,有效降低对地层渗透率的伤害。该体系较其它压裂液体系具有很好的滤失控制、优良的破胶返排能力,对支撑剂有很好的悬浮稳定作用,适宜中低渗透率地层的压裂施工。通过对影响体系性能的各因素及交互作用进行研究,确立了地层温度不大于100 ℃的交联乳化压裂液配方。

关键词：压裂液 O/W型支撑剂返排滤失压裂施工低渗透交联配方研究粘度

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Recent advances in semi-heterogenous photocatalysis in organic synthesis

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Chinese Chemical Letters 2025年第2期36卷 94-117页

作者： Jia-Cheng Hou Wei Cai Hong-tao Ji li-Juan Ou Wei-Min He School of Chemistry and Chemical Engineering University of South China School of Pharmaceutical Sciences Hunan University of Medicine School of Materials Science and Engineering Hunan Institute of Technology

Semi-heterogeneous photocatalysis has emerged as a powerful and productive platform in organic chemistry, which provides mild and eco-friendly conditions for a diverse range of bond-forming *** synergy of homogeneous catalysts and heterogeneous catalysts inherits their main advantages, such as higher activities, easy separation and superior recyclability. In this review, we summarize the recent advances in recyclable semi-heterogenous protocols for the light promoted bond-forming reactions and identify directions for future research according to the different photocatalysts/metal/redox catalysts involved. Notably, this review is not a comprehensive description of reported literature but aim to highlight and illustrate key concepts, strategies, reaction model, reaction conditions and mechanisms.

关键词： Bond-forming Organic synthesis Photocatalysis Recyclable Semi-heterogeneous

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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： Yu‑Ze Wang Yu‑Chang Wang Ting‑Ting liu Quan‑liang Zhao Chen‑Sha li Mao‑sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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The Security of Using Large Language Models:A Survey With Emphasis on ChatGPT

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 1-26页

作者： Wei Zhou Xiaogang Zhu Qing-Long Han lin li Xiao Chen sheng Wen Yang Xiang the School of Science Computing and Engineering Technologies Swinburne University of Technology IEEE the School of Computer and Mathematical Sciences the University of Adelaide Adelaide the Faculty of Science and Engineering Southern Cross University the School of Information and Physical Sciences the University of Newcastle

ChatGPT is a powerful artificial intelligence(AI)language model that has demonstrated significant improvements in various natural language processing(NLP) tasks. However, like any technology, it presents potential security risks that need to be carefully evaluated and addressed. In this survey, we provide an overview of the current state of research on security of using ChatGPT, with aspects of bias, disinformation, ethics, misuse,attacks and privacy. We review and discuss the literature on these topics and highlight open research questions and future *** this survey, we aim to contribute to the academic discourse on AI security, enriching the understanding of potential risks and mitigations. We anticipate that this survey will be valuable for various stakeholders involved in AI development and usage, including AI researchers, developers, policy makers, and end-users.

关键词： Artificial intelligence (AI) ChatGPT large language models (LLMs) security

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Prognostic roles nutritional index in patients with resectable and advanced biliary tract cancers

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World Journal of Gastroenterology 2025年第6期31卷 76-88页

作者： Di Zeng Ning-Yuan Wen Yao-Qun Wang Nan-sheng Cheng Bei li Division of Biliary Surgery Department of General SurgeryWest China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Research Center for Biliary Diseases West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Biliary tract cancer(BTC)is a rare,aggressive malignancy with increasing inci-dence and poor *** preoperative prognostic factors is crucial for effective risk-benefit assessments and patient *** prognostic nutritional index(PNI),which reflects immune-inflammatory and nutritional status,has shown prognostic value in various cancers,but its significance in BTC remains *** To assess the prognostic value of the preoperative PNI in BTC patients,with a focus on overall survival(OS)and disease-free survival(DFS).METHODS Comprehensive searches were conducted in the PubMed,EMBASE,and Web of Science databases from inception to April *** primary outcomes of interest focused on the associations between the preoperative PNI and the prognosis of BTC patients,specifically OS and disease-free survival(DFS).Statistical analyses were conducted via STATA 17.0 *** Seventeen studies encompassing 4645 patients met the inclusion ***-analysis revealed that a low PNI was significantly associated with poorer OS[hazard ratio(HR)1.91,95%CI:1.59-2.29;Plication bias was *** This study demonstrated that a low preoperative PNI predicts poor OS and DFS in BTC patients,highlighting its potential as a valuable prognostic *** prospective studies are needed to validate these findings and enhance BTC patient management.

关键词： Biliary tract cancer Prognostic nutritional index Predictive marker Meta-analysis Survival outcomes

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清代中后期四川乡场的管理机制及权力关系——以南部县为中心的考察

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四川师范大学学报（社会科学版） 2021年第4期48卷 176-189页

作者：郑成林李升涛华中师范大学中国近代史研究所

清代中后期,四川南部县各地乡场渐次兴起,并得到快速发展。这些乡场是由得到官府确认并授权的场总具体负责经营和管理的。场总负责经管乡场事务的制度,还得到四川督抚的支持和肯定,在其它州县也多有推行。场总通过抽收行用和帮差等方式... 详细信息

清代中后期,四川南部县各地乡场渐次兴起,并得到快速发展。这些乡场是由得到官府确认并授权的场总具体负责经营和管理的。场总负责经管乡场事务的制度,还得到四川督抚的支持和肯定,在其它州县也多有推行。场总通过抽收行用和帮差等方式,筹集活动经费,具有官府代理人、乡场保护人、逐利者的多重面相。在场总负责制下,官府和场总共同构建了一个双方均可获利的“盈利空间”,这也是该项制度得以长久运行的基础。光绪朝早年,随着官府加大对乡场财源的吸取力度,场内权力关系骤变,场总陷入“旧规”与“新政”的两难困境,并逐渐丧失对乡场的管控之权。

关键词：清代中后期乡场管理场总负责制四川南部县

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