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Journal of Materials Science & Technology 2024年第6期173卷 121-136页

作者： Huimeng Feng tong Wang Wei Wang Chengcheng Ma Yanan {1. Shougang Chen School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

Although extremely challenging,it is highly desirable to develop self-healing materials that exhibit high efficiency under environmental conditions for marine protection *** this work,polyurethane elastomers with hydrogen bond and dimethylglyoxime-urethane(DOU)coordination complex were combined with in-situ dual-functional BiOI@Bi_(2)S_(3) to synthesize high-efficiency photothermal cyclic self-healing antibacterial *** photothermal efficiency of BiOI@Bi_(2)S_(3) is improved by 38% through interfacial ***@Bi_(2)S_(3)/pu rapidly rises by 50.2℃ within 300 s under near-infrared(NIR)light,which can trigger the hydrogen bond of polyurethane coating and recover the barrier properties of the coating through *** functional theory was used to simulate and analyze the generation of multiple electron transfer paths after the vulcanization of BiOI,which improves the interfacial mobility of photogenerated carriers and generates more ***,molecular dynamics verified the self-healing mechanism of hydrogen bond and the photothermal lifting mechanism of the *** 5th scratches and self-healing cycle tests,the coating has a self-healing efficiency of more than 80%,which can ensure the self-healing and anticorrosion protection performance of the coating for multiple *** photocatalytic and photothermal properties of BiOI@Bi_(2)S_(3) enhance the antibacterial rate of the coating up to 99%.This work provides heuristic perspectives for the design of coatings with anti-corrosion,antibacterial and self-healing properties.

关键词： Self-healing Photothermal Interfacial regulation Dual-functional BiOI@Bi_(2)S_(3) Antibacterial

Optical Sensor with Wide Range and High Sensitivity for Internal Magnetic Field Detection of Transformer

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CSEE Journal of Power and Energy Systems 2024年第5期10卷 2230-2244页

作者： Meng Huang Wei Zheng tong Ji Mao Ji Tianjiao {1. Bo Qi State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China Beijing Key Laboratory of High Voltage&EMC North China Electric Power UniversityBeijing 102206China China Electric Power Research Institute Beijing 100192China

The deterioration of winding defects is one of the important causes of power transformer fires and even explosion *** change of leakage magnetic field distribution is the most direct response to winding *** there are few sensors suitable for online measurement of the internal magnetic field of *** on the Faraday magneto-optical effect,a magnetic field sensor with wide range and high sensitivity is proposed in this paper,which is suitable for the interior use of *** straight-through optical structure with interior polarizer is adopted,and the sensor has a measurement range of 1.5 T and a sensitivity of 1.*** also possesses a small size,with a length of about 30 mm after *** influence mechanism of vibration and temperature is revealed through theoretical analysis and numerical *** is proposed to filter out the interference of vibration by characteristic frequency analysis and to compensate for temperature by a two-probe *** anti-interference test verifies the effectiveness of this method,and it can reduce the error from 80.56%to 2.63%under the combined interference of vibration and temperature.

关键词： Anti-interference Bessel function Faraday magneto-optical effect leakage magnetic field transformer two-probe structure

αDecay in extreme laser fields within a deformed Gamow-like model

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Nuclear Science and Techniques 2024年第2期35卷 131-144页

作者： Qiong Xiao Jun-Hao Cheng Yang-Yang Xu You-Tian Zou Jun-Gang Deng tong-{1. Yu Department of Physics National University of Defense TechnologyChangsha 410073China College of Science China Three Gorges UniversityYichang 443002China

In this study, the effect of extreme laser fields on the α decay process of ground-state even–even nuclei was *** the deformed Gamow-like model, we found that state-of-the-art lasers can cause a slight change in the α decay penetration probability of most nuclei. In addition, we studied the correlation between the rate of change of the α decay penetration probability and angle between the directions of the laser electric field and α particle emission for different nuclei. Based on this correlation, the average effect of extreme laser fields on the half-life of many nuclei with arbitrary α particle emission angles was calculated. The calculations show that the laser suppression and promotion effects on the α decay penetration probability of the nuclei population with completely random α particle-emission directions are not completely *** remainder led to a change in the average penetration probability of the nuclei. Furthermore, the possibility of achieving a higher average rate of change by altering the spatial shape of the laser is explored. We conclude that circularly polarized lasers may be helpful in future experiments to achieve a more significant average rate of change of the α decay half-life of the nuclei population.

关键词： αDecay Deformed Gamow-like model Half-lives Extreme laser field Penetration probability

Application status and research progress of CO_(2) fracturing fluid in petroleum engineering:A brief review

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Petroleum 2024年第1期10卷 1-10页

作者： Jinzhou Zhao tong Wu Wanfen {1. Du Daijun Qingyuan Chen Bowen Chen Jintao Li Yitao Huang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500People's Republic of China Shale Gas Research Institute of PetroChina Southwest Oil&Gas Field Company Chengdu610051People's Republic of China

This paper comprehensively reviews the application and research progress of CO_(2) fracturing fluids in China,highlights the existing issues and puts forward suggestions for future *** types of fracturing fluid systems containing CO_(2),namely,CO_(2) dry fracturing fluid,CO_(2) energized fracturing fluid,and CO_(2) foam fracturing fluid,are categorized based on the mass ratio and process difference between CO_(2),water,and treatment *** applications in China reveal several problem to be resolved:(1.The application scope of CO_(2) fracturing fluids is restricted to depleted reservoirs,re-fracturing of old wells,and medium-deep reservoirs with low formation pressure coefficients;(2)different types of CO_(2) fracturing fluids require different processes and ground supporting equipment;(3)optimization of CO_(2) compatibility,functionality,temperature and salt tolerance,as well as the cost of treatment agents is necessitated;(4)existing CO_(2) fracturing fluid system fail to perform well with low friction,low filtration,and high sand-carrying capacity.(5)there lacks a targeted industry standard for evaluation of performance of CO_(2) fracturing fluid system and treatment ***,in order to meet the goals of CCUS-EOR,CCUS-EGR,or integration of fracturing,displacement and burial by CO_(2),efforts should be made in the aspects that followed,including in-depth investigation of the mechanism of CO_(2) fracturing fluids,the adaptability and compatibility between existing equipment,different CO_(2) fracturing fluid systems and processes,and construction of treatment agents,low-density proppants and highperformance systems of recyclability and *** addition,optimization of CO_(2) fracturing fluid system based fracturing design is also crucial taking such related factors such as overall reservoir geological conditions,petrophysical properties,CO_(2) transportation,and well site layout into consideration.

关键词： Reservoir reconstruction CO_(2)fracturing fluid Fracturing fluid system Fracturing displacement burial integration

Relationship between environmental evolution and human activities in the northeastern Qinghai-Xizang Plateau throughout the past millennium and its implications for the onset of the Anthropocene

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Science China Earth Sciences 2024年第11期67卷 3536-3549页

作者： Yang pu Xueqiong WEI Jianbao LIU Ke ZHANG Beibei LI Zhudeng WEI Mengmeng ZHANG {1. HE Yanjun WANG Xiaohua SHAO School of Geographical Sciences Nanjing University of Information Science and Technology Key Laboratory of Alpine Ecology Institute of Tibetan Plateau Research Chinese Academy of Sciences State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology Chinese Academy of Sciences

In current research on the Anthropocene, assessing the impact of human activities via stratigraphic records of sediments and demarcating the Anthropocene epoch globally are critical scientific issues that urgently need to be addressed. The northeastern Qinghai-Xizang Plateau(QXP), where humans first settled permanently in large numbers in the QXP, has varying sedimentary environments that are extremely sensitive to human activities. In contrast to other regions of the QXP, the northeastern sector boasts a richer array of climatic and environmental reconstruction sequences. This distinctive feature renders it an exemplary locale for investigating the stratigraphic boundary of the Anthropocene. Through in-depth analysis and integration of existing paleoclimate and paleoenvironment sequences in the northeastern QXP, we draw the following conclusions:(1. Throughout the past millennium, the impact of human activities on the environment of the northeastern QXP has become increasingly significant, especially in the past 200–300 years, gradually overshadowing climatic factors.(2) Since AD 1.50,multiple physicochemical indicators related to human activities in the northeastern QXP have shown exponential growth,forming a distinct peak within the past millennium and clearly depicting the global “Great Acceleration” phenomenon and its development process.(3) Intensified human activities have driven swift environmental shifts and “decoupled” the interplay between climatic variations and the ecological environment, propelling the northeastern QXP into the “Early Anthropocene”from the “Late Holocene”. On the basis of the above findings, we construct a model suitable for identifying the stratigraphic boundary of the Anthropocene in the northeastern QXP and note that since the ecological environment in the northeastern QXP has entered the “Early Anthropocene”, the climate signals of certain physicochemical indicators in sediments are gradually becoming weaker, whereas the signals of

关键词： Anthropocene Qinghai-Xizang Plateau (QXP) Climate change Environmental evolution Human activities

Bi-Frobenius Algebra Structures on Quantum Complete Intersections

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Acta Mathematica Sinica,English Series 2024年第6期40卷 1481-1504页

作者： Hai JIN pu ZHANG School of Mathematical Sciences Shanghai Jiao Tong UniversityShanghai 200240P.R.China

This paper is to look for bi-Frobenius algebra structures on quantum complete intersections over field *** find a class of comultiplications,such that if√−1.k,then a quantum complete intersection becomes a bi-Frobenius algebra with comultiplication of this form if and only if all the parameters qij=±***,it is proved that if√−1.k then a quantum exterior algebra in two variables admits a bi-Frobenius algebra structure if and only if the parameter q=±√*** if−1.∈k,then the exterior algebra with two variables admits no bi-Frobenius algebra *** prove that the quantum complete intersections admit a bialgebra structure if and only if it admits a Hopf algebra structure,if and only if it is commutative,the characteristic of k is a prime p,and every ai a power of *** also provides a large class of examples of bi-Frobenius algebras which are not bialgebras(and hence not Hopf algebras).In commutative case,other two comultiplications on complete intersection rings are given,such that they admit non-isomorphic bi-Frobenius algebra structures.

关键词： Bi-Frobenius algebras coalgebras bialgebras Hopf algebras quantum complete intersections quantum exterior algebras

Al-enabled properties distribution prediction for high-pressure die casting Al-Si alloy

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Advances in Manufacturing 2024年第3期12卷 591-602页

作者： Yu-tong Yang Zhong-Yuan Qiu Zhen Zheng Liang-Xi {1. Ding-Ding Chen Jiang Zheng Rui-Jie Zhang Bo Zhang Shi-Yao Huang Key Laboratory for Light-Weight Materials Nanjing Tech UniversityNanjing211816People’s Republic of China Xi’an Jiaotong-Liverpool University Suzhou215000JiangsuPeople’s Republic of China Materials Academy JITRI Suzhou215100JiangsuPeople’s Republic of China Key Laboratory for Light-weight Materials Nanjing University of Science and TechnologyNanjing210009People’s Republic of China College of Materials Science and Engineering Chongqing UniversityChongqing400044People’s Republic of China Collaborate Innovation Center of Steel Technology University of Science and Technology BeijingBeijing100083People’s Republic of China Chongqing Millison Technologies Inc. Chongqing401321People’s Republic of China

High-pressure die casting(HPDC)is one of the most popular mass production processes in the automotive industry owing to its capability for part ***,the nonuniform distribution of mechanical properties in large-sized HPDC products adds complexity to part property ***,a methodology for property prediction must be *** characterization,simulation technologies,and artificial intelligence(AI)algorithms were ***,an image recognition technique was employed to construct a temperature-microstructure characteristic model for a typical HPDC Al7Si0.2Mg ***,a porosity/microstructure-mechanical property model was established using a machine learning method based on the finite element method and representative volume element model ***,the computational results of the casting simulation software were mapped with the porosity/microstructure-mechanical property model,allowing accurate prediction of the property distribution of the HPDC Al-Si *** AI-enabled property distribution model developed in this study is expected to serve as a foundation for intelligent HPDC part design platforms in the automotive industry.

关键词： Artificial intelligence(AI) Properties prediction High-pressure die-casting(HPDC) Image recognition Machine learning

Recent progress of hybrid cathode interface layer for organic solar cells

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Journal of Energy Chemistry 2024年第4期91卷 383-406页

作者： Jianru Wang Dan Zhou Zhentian Xu Yujie pu Senmei Lan Fang Wang Feiyan Wu Bin Hu Yongfen {1. Ruizhi Lv Honglin Chu Lie Chen Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources RecycleNanchang Hangkong UniversityNanchang 330063JiangxiChina College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031JiangxiChina

Organic solar cells(OSCs)have gained conspicuous progress during the past few decades due to the development of materials and upgrading of the device *** power conversion efficiency(PCE)of the single-junction device had surpassed 1.%.The cathode interface layer(CIL),by optimizing the connection between the active layer and the cathode electrode,has become a momentous part to strengthen the performances of the ***,CIL is also indispensable to illustrating the working mechanism of OSCs and enhancing the stability of the *** this essay,hybrid CILs in OSCs have been ***,the advancement and operating mechanism of OSCs,and the effects and relevant design rules of CIL are briefly concluded;secondly,the significant influence of CIL on enhancing the stability and PCE of OSCs is presented;thirdly,the characteristics of organic hybrid CIL and organic-inorganic hybrid CIL are ***,the conclusion and outlook of CIL are summarized.

关键词： Organic solar cells Theoperation mechanism Organic hybrid cathode interface layer Organic-inorganic hybrid CIL

Real-time Energy Management Method for Electric-hydrogen Hybrid Energy Storage Microgrids Based on DP-MPC

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 324-336页

作者： Qi Li Xueli Zou Yuchen pu Weirong Chen School of Electrical Engineering Southwest Jiaotong UniversityChengdu 611756China

With the increasing presence of intermittent energy resources in microgrids,it is difficult to precisely predict the output of renewable resources and their load *** order to realize the economical operations of the system,an energy management method based on a model predictive control(MPC)and dynamic programming(DP)algorithm is *** method can reasonably distribute the energy of the battery,fuel cell,electrolyzer and external grid,and maximize the output of the distributed power supply while ensuring the power balance and cost optimization of the *** on an ultra-shortterm forecast,the output power of the photovoltaic array and the demand power of the system load are *** offline global optimization of traditional dynamic programming is replaced by the repeated rolling optimization in a limited period of time to obtain power values of each unit in the energy storage *** with the traditional DP,MILP-MPC and the logic based real-time management method,the proposed energy management method is proved to be feasible and effective.

关键词： Electric-hydrogen hybrid energy economic energy management improved dynamic programming microgrid model predictive control

Sarcopenia adversely impacts clinical outcomes in patients undergoing pancreaticoduodenectomy: A systematic review and meta-analysis

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1857-1870页

作者： Qi-Hui Zhang Jin-Dong Ma Yan-Min Lu Run-Nan Zhang Zhong-Hua Zhao Ya-tong Li Qiang-{1. Chen Department of Clinical Nutrition Binzhou Medical University HospitalBinzhou 256603Shandong ProvinceChina Department of Hepatobiliary Surgery Binzhou Medical University HospitalBinzhou 256603Shandong ProvinceChina

BACKGROUND Sarcopenia is a syndrome marked by a gradual and widespread reduction in skeletal muscle mass and strength,as well as a decline in functional ability,which is associated with malnutrition,hormonal changes,chronic inflammation,distur-bance of intestinal flora,and exercise *** is a com-monly employed clinical intervention for conditions such as pancreatic head cancer,ampulla of Vater cancer,and cholangiocarcinoma,among others,with a notably high rate of postoperative *** is frequent in patients undergoing ***,data regarding the effects of sarcopenia in patients undergoing pancreaticoduodenectomy(PD)are both limited and *** pubMed,Cochrane Library,Web of Science,and Embase databases were screened for studies published from the time of database inception to June 2023 that described the effects of sarcopenia on the outcomes and complications of *** researchers independently assessed the quality of the data extracted from the studies that met the inclusion ***-analysis using RevMan 5.3.5 and Stata 1..0 software was *** and funnel plots were used,respectively,to demonstrate the outcomes of the sarcopenia group vs the non-sarcopenia group after PD and to evaluate potential publication *** Sixteen studies encompassing 2381.patients were included in the *** patients in the sarcopenia group(n=833)had higher overall postoperative complication rates[odds ratio(OR)=3.42,95%confidence interval(CI):1.95-5.99,P1.,higher Clavien-Dindo class≥Ⅲ major complication rates(OR=1.41.95%CI:1.04-1.90,P=0.03),higher bacteremia rates(OR=4.46,95%CI:1.42-1..98,P=0.01.,higher pneumonia rates(OR=2.1.,95%CI:1.34-3.27,P=0.001.,higher pancreatic fistula rates(OR=1.42,95%CI:1.1.-1.79,P=0.003),longer hospital stays(OR=2.86,95%CI:0.44-5.28,P=0.02),higher mortality rates(OR=3.1.,95%CI:1.55-6.50,P=0.002),and worse overall survival(hazard ratio=2.81.95%CI:1.4

关键词： Pancreaticoduodenectomy Sarcopenia Postoperative complications Length of stay Meta-analysis