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Ore Geology,H-O-C Isotopes and 40Ar-39Ar Dating of the Wutonggou Iron Deposit,Eastern Tianshan,NW China:Implications for the Source,Timing,and Genesis of Hydrothermal Mineralization in a Sedimentary Iron Deposit

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Journal of Earth Science 2024年第4期35卷 1170-1185页

作者： chun-Long wang Yi-Tian wang State Key Laboratory of Geological Processes and Mineral Resources Collaborative Innovation Center for Exploration of Strategic Mineral ResourcesSchool of Earth ResourcesChina University of GeosciencesWuhan430074China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing100037China

The Wutonggou iron deposit is located in the well-known iron metallogenic belt in the eastern Tianshan,NW China,and has been regarded as a sedimentary iron *** hydrothermal overprinting could play indispensable roles in the formation of high-grade iron ores in sedimentary iron deposits,previous studies mainly focused on sedimentary-related iron mineralization,while the nature and contribution of hydrothermal fluids are poorly ***,an integrated study of ore geology,H-O-C isotopes and^(40)Ar-^(39)Ar dating,is conducted on the Wutonggou deposit,in order to reveal the features,source,and timing of hydrothermal *** studied deposit includes two mining sections namely the Jianshan and ***δ^(18)O values of early magnetite from the Jianshan section range from+3.0‰to+5.8‰that nearly consistent with classic magmatic magnetite,while increase to 6.3‰-8.0‰in the late *** from the two sections shows comparable H-O isotopic compositions and identical fractionation trends,and is plotted in or periphery to the primary magmatic water *** from the two sections are broadly similar in carbon and oxygen isotopic compositions,and siderite from the Wutonggou section is plotted in the same ***,comparable stable isotopic compositions and evolution trends indicate similar magmatic fluids contributed hydrothermal iron mineralization in the two mining ***,water-rock interactions of varying degrees generated distinct mineralization styles in the Jianshan and Wutonggou sections,and caused the isotopic fractionation in late *** extracted from a hydrothermal siderite ore yielded a^(40)Ar-^(39)Ar plateau age of 299.5±2.0 Ma,indicates the timing of hydrothermal iron mineralization is corresponding to the emplacement of vicinity *** together,the hydrothermal mineralization in the Wutonggou iron deposit was the product of remobilization and upgrading of early sedimentary iron ores,a

关键词： iron deposits H-O-C isotopes 40Ar-39Ar dating sedimentary iron deposits Wutonggou iron deposit eastern Tianshan

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Regulating depletion region enables highly efficient and stable perovskite solar cells

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Science China Chemistry 2024年第9期67卷 2783-2784页

作者： chun-Yun wang Michael Saliba Institute for Photovoltaics(ipv) University of Stuttgart70569 StuttgartGermany IEK5-Photovoltaics Forschungszentrum Jülich52425 JülichGermany

Perovskite solar cells(PSCs)have made impressive strides in recent years with the power conversion efficiency(PCE)now exceeding 26%[1],which is comparable to established technologies such as ***,the ion migration in perovskites causes undesirable hysteresis and *** affects the long-term operational stability of PSCs,hampering a possible industrialization.

关键词： perovskite depletion exceeding

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A possible probe to neutron-skin thickness by fragment parallel momentum distribution in projectile fragmentation reactions

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Nuclear Science and Techniques 2024年第6期35卷 114-119页

作者： chun-wang Ma Yi-Jie Duan Ya-Fei Guo chun-Yuan Qiao Yu-Ting wang Jie Pu Kai-Xuan Cheng Hui-Ling Wei College of Physics Henan Normal UniversityXinxiang 453007China Institute of Nuclear Science and Technology Henan Academy of SciencesZhengzhou 450015China

Neutron-skin thickness is a key parameter for a neutron-rich nucleus;however,it is difficult to *** the framework of the Lanzhou Quantum Molecular Dynamics(LQMD)model,a possible probe for the neutron-skin thickness(δ_(np))of neutron-rich ^(48)Ca was studied in the 140A MeV ^(48)Ca+^(9)Be projectile fragmentation reaction based on the parallel momentum distribution(p∥)of the residual fragments.A Fermi-type density distribution was employed to initiate the neutron density distributions in the LQMD simulations.A combined Gaussian function with different width parameters for the left side(Γ_(L))and the right side(Γ_(R))in the distribution was used to describe the p∥of the residual *** neutron-rich sulfur isotopes as examples,Γ_(L) shows a sensitive correlation withδ_(np) of ^(48)Ca,and is proposed as a probe for determining the neutron skin thickness of the projectile nucleus.

关键词： Neutron-skin thickness Projectile fragmentation Parallel momentum distribution Neutron-rich nucleus Quantum molecular dynamics model

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The Perturbed Compound Poisson Risk Model with Proportional Investment

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Acta Mathematicae Applicatae Sinica 2024年第1期40卷 109-128页

作者： Nai-dan Deng chun-wei wang Jia-en Xu School of Mathematics and Statistics Henan University of Science and TechnologyLuoyang471023China

In this paper, the insurance company considers venture capital and risk-free investment in a constant proportion. The surplus process is perturbed by diffusion. At first, the integro-differential equations satisfied by the expected discounted dividend payments and the Gerber-Shiu function are derived. Then, the approximate solutions of the integro-differential equations are obtained through the sinc method. Finally, the numerical examples are given when the claim sizes follow different distributions. Furthermore, the errors between the explicit solution and the numerical solution are discussed in a special case.

关键词： expected discounted dividend payments lognormal distribution proportional investment perturbed risk model sinc numerical method

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Constructing highly safe and long-life calcium ion batteries based on hydratedvanadium oxide cathodes featuring a pillar structure

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Rare Metals 2024年第6期43卷 2597-2612页

作者： chun-Fang wang Shi-Wei Zhang Lan Huang Yuan-Min Zhu Feng Liu Jian-Chuan wang Li-Ming Tan chun-Yi Zhi Cui-Ping Han Powder Metallurgy Research Institute Central South UniversityChangsha410083China Songshan Lake Materials Laboratory Dongguan 523808China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Calcium-ion batteries(CIBs)have generated intense interest due to the growing demand for safer,cheaper,and large-scale energy storage ***,their development is still in its infancy,owing to the lack of suitable cathodes for sustaining reversiblc Ca^(2+)intercalation/***,layered H_(2)V_(3)O_(8)(HVO)with Zn^(2+)pre-insertion(ZHVO)is reported as a high-rate and highly durable cathode material for *** existence of Zn^(2+)and H_(2)O pillars could expand the interlayer spacing up to 1.8 nm,which is favorable for the diffusion of bulky Ca^(2+).The formation of Zn-O bonds facilitates electron transfer and enhances electrical ***,the ZHVO cathode achieves superior capacity performance(213.9 mAh·g^(-1)at 0.2 A·g^(-1))and long lifespan(78.3%for 1,000 cycles at 5 A·g^(-1))compared to pristine *** functional theory(DFT)calculations revealed that Zn^(2+)moved during Ca^(2+)intercalation,thereby reducing the diffusion energy barrier and facilitating Ca^(2+)***,a safe aqueous calcium ion cell was successfully assembled.

关键词： Multivalent batteries Calcium-ion batteries Layered structure Vanadium oxide Cathode materials

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The role of tazarotene-induced gene 1 in carcinogenesis:is it a tumor suppressor gene or an oncogene?

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BIOCELL 2024年第9期48卷 1285-1297页

作者： chun-HUA wang LU-KAI wang RONG-YAUN SHYU FU-MING TSAI Department of Dermatology Taipei Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationNew Taipei City231TaiwanChina School of Medicine Tzu Chi UniversityHualien970TaiwanChina Department of Life Sciences Ministry of Science and TechnologyTaipei106TaiwanChina Department of Internal Medicine Taipei Tzu Chi HospitalThe Buddhist Tzu Chi Medical FoundationNew Taipei City231TaiwanChina Department of Research Taipei Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationNew Taipei City231TaiwanChina

Tazarotene-induced gene 1(TIG1)is induced by a derivative of vitamin A and is known to regulate many important biological processes and control the development of ***1 is widely expressed in various tissues;yet in many cancer tissues,it is not expressed because of the methylation of its ***,the expression of TIG1 in cancer cells inhibits their growth and invasion,suggesting that TIG1 acts as a tumor suppressor ***,in some cancers,poor prognosis is associated with TIG1 expression,indicating its protumor growth characteristics,especially in promoting the invasion of inflammatory breast cancer *** review comprehensively summarizes the roles of the TIG1 gene in cancer development and details the mechanisms through which TIG1 regulates cancer development,with the aim of understanding its various roles in cancer development.

关键词： Tazarotene-induced gene 1 Retinoic acid receptor responder protein 1 Tumor suppressor gene Oncogene

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Z-scheme Bi_(4)O_(5)Br_(2)/NH_(2)-MIL-125(Ti)heterojunctions enable exceptional visible photocatalytic degradation of organic pollutant

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Rare Metals 2024年第7期43卷 3161-3172页

作者： Feng Huang Muhammad Humayun Gang Li Ting-Ting Fan Wen-Lin wang Yu-Lin Cao Anton Nikiforov chun-Dong wang Jing wang Key Laboratory of Analytical Science and Technology of Hebei Province Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of EducationState Key Laboratory of New Pharmaceutical Preparations and ExcipientsCollege of Chemistry and Materials ScienceHebei UniversityBaoding071002China Energy Water and Environment LabCollege of Humanities and SciencesPrince Sultan University11586 RiyadhSaudi Arabia Baoding Green Yijia Environmental Protection Technology Ltd Baoding 071051China Physics Laboratory Industrial Training CenterShenzhen Polytechnic UniversityShenzhen 518055China Department of Applied Physics Ghent University9000 GhentBelgium School of Integrated Circuits Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China

One key strategy to enhance photocatalytic performance is to improve the transfer and separation efficiency of photogenerated carriers by building optimized ***,novel Bi_(4)O_5Br_(2)/NH_(2)-MIL-125(Ti)Z-scheme heterojunctions are fabricated and used as photocatalysts for organic pollutant *** NH_(2)-MIL-125(Ti)nanosheets are exfoliated via a self-developed alkali solution stripping approach and then uniformly decorated on Bi_(4)O_(5)Br_(2).The as-prepared Bi_(4)O_(5)Br_(2)/NH_(2)-MIL-125(Ti)presents more than 90%degradation of various pollutants,outperforming the counterpart individual *** various characterization results suggest that the enhanced degradation rate is due to the more intimate face-to-face interfacial contact of the lamellar Z-scheme heterojunction materials,in which the migration path of carriers from the material's interior to the surface can be reduced,in turn enhancing migration efficiency and separation capability significantly.A possible photocatalytic reaction mechanism is proposed based on the photoelectric behaviors,radical trapping experiments and liquid chromatography mass spectrometry *** work promotes the development of new photocatalytic materials for heterojunctions with face-to-face interfacial contacts,as well as the effective purification of wastewater in environmental remediation.

关键词： Z-scheme heterojunctions Photocatalysis Alkaline solution stripping Bi_(4)O_(5)Br_(2) NH_(2)-MIL-125(Ti)

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Undifferentiated high-grade pleomorphic sarcoma of the common bile duct:A case report and review of literature

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 2253-2260页

作者： Li-Ping Zheng Wen-Yan Shen chun-Dong Hu chun-Hua wang Xu-Jian Chen Jing wang Yi-Yu Shen Department of General Surgery The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000Zhejiang ProvinceChina Department of Pathology The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000Zhejiang ProvinceChina

BACKGROUND Undifferentiated pleomorphic sarcoma(UPS)is a rare malignant mesenchymal tumor with a poor *** mainly occurs in the extremities,trunk,head and neck,and retroperitoneum *** to the lack of specific clinical manifestations and imaging features,UPS diagnosis mainly depends on pathological and immunohistochemical examinations for exclusive *** we report an extremely rare case of high-grade UPS in the common bile duct(CBD).There are limited available data on such *** SUMMARY A 70-year-old woman was admitted to our department with yellow eyes and urine accompanied by upper abdominal distending pain for 2 *** laboratory data suggested significantly elevated hepatorenal function *** imaging data revealed calculous cholecystitis,intrahepatic and extrahepatic bile duct dilation with extrahepatic bile duct calculi,and a space-occupying lesion at the distal *** endoscopic biliary stenting and symptomatic support therapy,CBD exploration and biopsy were *** frozen section indicated malignant spindle cell tumor of the CBD mass,and further radical pancreaticoduodenectomy was ***,the neoplasm was diagnosed as a high-grade UPS combined with the light-microscopic morphology and immunohistochemical *** This extremely rare case highlighted the need for increasing physicians'vigilance,reducing the odds of misdiagnosis,and providing appropriate treatment strategies.

关键词： Undifferentiated pleomorphic sarcoma Soft tissue sarcoma Common bile duct Extrahepatic bile duct Immunohistochemistry Case report

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Reconstructed parallel sites enhance the reactive oxygen tolerance of non-noble metal catalyst for durable proton exchange membrane fuel cells

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Science China Chemistry 2024年第11期67卷 3739-3748页

作者： Wenjie wang Hui Ding Minghao wang Han Cheng Xiang Shi Lin wang chun wang wangsheng Chu Yi Xie Changzheng Wu National Synchrotron Radiation Laboratory University of Science and Technology of China School of Chemistry and Materials Science CAS Center for Excellence in Nanoscience University of Science & Technology of China Zhejiang Institute of Photoelectronics Institute of Energy Hefei Comprehensive National Science Center

The establishment of reactive oxygen species(ROS) elimination sites in iron-nitrogen-carbon(Fe-N-C) electrocatalysts to achieve durable proton-exchange membrane fuel cells(PEMFCs) performance has attracted broad interest. However, realizing ROS removal efficiency and oxygen reduction reaction(ORR) activity within a single system represents a significant challenge to date. Herein, we demonstrate uniform ROS elimination sites and ORR centers through an electrochemical reconstruction method on the parallel sites of Fe@Ce NC electrocatalyst for durable PEMFC. During the reconstruction process, the Fe sites can retain their original configuration. Meanwhile, the pristine Ce clusters will evolve into more efficient, highly dispersed ***, the reconstructed Fe and Ce sites exhibit favorable energy barriers for the ORR and ROS elimination pathways,respectively, thereby maintaining ORR activity and achieving high ROS tolerance. Consequently, the PEMFC assembled with our catalyst shows only a 2% decay in power density after the accelerated durability test. We anticipate that this parallel structure design will provide new insight into the development of more durable electrocatalysts for PEMFCs.

关键词： parallel reaction pathways sites reconstruction oxygen reduction reaction radical elimination fuel cells

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Mapping the Impact of Artificial Intelligence on Trauma Research via Scientometric Analysis

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Journal of Forensic Science and Medicine 2024年第2期10卷 133-147页

作者： chun wang Mengzhou Zhang Dong Zhao Key Laboratory of Evidence Science(China University of Political Science and Law) Ministry of EducationBeijingChina

Background:Medical progress has often been hindered by the inherent limitations of human ability to process large volumes of *** application of Artificial Intelligence(AI)can help overcome this constraint,particularly in the field of *** and Objectives:This study aims to analyze the application of artificial intelligence in the field of trauma through visualization tools,predict future research hotspots,and explore the potential applications of related technologies in the field of trauma,especially traumatic brain injury(TBI).Materials and Methods:Based on the Web of Science database,this study utilized visualization tools such as CiteSpace,VOSviewer,and SciMAT to create a knowledge map of AI applications in trauma from 1979 to ***:The analysis indicates that traumatic brain injury(TBI)will be a focal point for future research on the use of AI in ***,terms related to machine learning,including Artificial Neural Network and Convolutional Neural Network,are expected to be extensively employed in trauma detection and *** targeted algorithms hold significant potential for groundbreaking applications in ***:Artificial intelligence,especially machine learning techniques,will play a crucial role in the research and application of trauma,particularly *** the future,these technologies are expected to provide new methods and perspectives for TBI detection,prediction,and treatment.

关键词： CiteSpace knowledge mapping machine learning SciMAT traumatic brain injury VOSviewer

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