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Journal of Hydrodynamics 2024年第2期36卷 219-231页

作者： Chen Geng Zhao-hui Qian Ke-xin zheng Wei-xiang Ye Xian-wu Luo State Key Laboratory of Hydroscience cand Engineering Deparment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

In the present paper,the unsteady cavitating turbulent flow over the twisted NACA66 hydrofoil is investigated based on an modified shear stress transfer k-ωpartially averaged Navier-Stokes(MSST PANS)model,i.e.,new MSST PANS(NMSST PANS)model,where the production term of kinetic energy in the turbulence model is modified with *** with the experimental data,cavitation evolution and its characteristic frequency are satisfactorily predicted by the proposed NMSST PANS *** is revealed that the interaction among the main flow,the reentrant jets,and sheet cavitation causes the formation of the primary shedding cavity near the mid-span and the secondary shedding cavity at each side of the twisted hydrofoil,and further induces the remarkable pressure gradient around shedding *** with the development of the primary and the secondary shedding cavities,the great pressure gradient associated with large cavity volume variation promotes the vortical flow generation and the spatial deformation of vortex structure during cavitation evolution,and results in the primary and the secondary U-type ***,dynamic mode decomposition(DMD)analysis is utilized to confirm the interaction among the main flow,the main reentrant jet and two side reentrant jets,and *** results indicate that the proposed NMSST PANS model is suitable to simulate the complicated cavitating turbulent flow for various engineering applications.

关键词： Cavitating turbulent flow partially averaged Navier-Stokes(PANS)model hydrofoil numerical simulation

Interaction Between Ustilaginoidea virens and Rice and Its Sustainable Control

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Rice science 2024年第3期31卷 269-284页

作者： ZHANG Fengmin CAO Zhenzhen zheng xin HE Yuntao CHEN Mingxue LIN Xiaoyan Rice Product Quality Inspection&Supervision Testing Center of Ministry of Agriculture and Rural Affairs China National Rice Research InstituteHangzhou 310006China

Ustilaginoidea virens is a common rice pathogen that can easily lead to a decline in rice quality and the production of toxins pose potential risks to human *** this review,we present a comprehensive literature review of research since the discovery of rice false *** provide a comprehensive and,at times,critical overview of the main results and findings from related research,and propose future research ***,we delve into the interaction between *** and rice,including the regulation of transcription factors,the process of *** infecting rice panicles,and the plant immune response caused by rice *** that,we discuss the identification and characterization of mycotoxins produced by the pathogenic fungus,as well as strategies for disease *** emphasize the importance of comprehensive agricultural prevention and control methods for the sustainable management of *** knowledge will update our understanding of the interaction between *** and rice plants,offering a valuable perspective for those interested in ***.

关键词： rice false smut flower-specific infection mycotoxin food safety plant disease

Dynamic recrystallization behavior and strengthening mechanism of a novel Mo-Ti_(3)AlC_(2) alloy at ultrahigh temperature

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Rare Metals 2024年第8期43卷 3946-3960页

作者： Lu Yang xin-Yuan zheng Yang Zhao Xi-Ran Wang Fang-Nao Xiao Shi-Zhong Wei School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471023China National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan University of Science and TechnologyLuoyang 471003China Department of Applied Mechanics Univ.Bourgogne FrancheComteFEMTO-ST InstituteCNRS/UF/ENSMM/UTBM25000BesangonFrance

Increasing the recrystallization temperature to achieve better high-temperature performance is critical in the development of molybdenum alloys for ultrahightemperature applications,such as the newest generation of multitype high-temperature nuclear *** this study,an innovative strategy was proposed to improve the performance of molybdenum alloys at high temperature by using the two-dimensional MAX(where M is an early transition metal,A is an A-group element and X is C or N)ceramic material Ti_(3)AlC_(2).The relationships between flow stress,strain rate and temperature were *** microstructure,distribution of misorientation and evolution of dislocations in the Mo-Ti_(3)AlC_(2) alloy were *** microscopic mechanism of the Ti_(3)AlC_(2) phase in the molybdenum alloy at high temperatures was *** experimental results showed that the peak flow stress of Mo-Ti_(3)AlC_(2) at 1600℃ reached 155 MPa,which was161.8% greater than that of pure *** activation energy of thermal deformation of Mo-Ti_(3)AlC_(2) was as large as537 kJ·mol~(-1),which was 17.6% more than that of pure *** recrystallization temperature reached 1600℃ or even *** topological reaction of the Ti_(3)AlC_(2) phase consumed a large amount of energy at high temperatures,resulting in increases in the deformation activation *** structures of AlTi_3 and Ti-O Magneli-phase oxides(Ti_nO_(2n-1)) were formed in-situ,which relied on kink bands and interlayer slip,resulting in many dislocations during ***,the special two-dimensional of the structure Ti_(3)AlC_(2) ceramic inhibited the recrystallization behavior of the Mo *** results of this study can provide theoretical guidance for the development of a new generation of molybdenum alloys for use in ultrahigh-temperature environments.

关键词： Mo alloy Two-dimensional reinforcement Dynamic recrystallization behavior Hot deformation Mechanical properties

Ex vivo liver resection and auto-transplantation as an alternative for the treatment of liver malignancies: Progress and challenges

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 117-122页

作者： xin Yang Lu Lu Wen-Wei Zhu Yi-Feng Tao Cong-Huan Shen Jin-Hong Chen zheng-xin Wang Lun-Xiu Qin Hepatobiliary Surgery and Liver Transplantation Centers Department of General SurgeryHuashan Hospital&Cancer Metastasis InstituteFudan UniversityShanghai 200040China

Hepatectomy is still the major curative treatment for patients with liver ***,it is still a big challenge to remove the tumors in the central posterior area,especially if their location involves the retrohepatic inferior vena cava and hepatic *** vivo liver resection and auto-transplantation(ELRA),a hybrid technique of the traditional liver resection and transplantation,has brought new hope to these patients and therefore becomes a valid alternative to liver *** to its technical difficulty,ELRA is still concentrated in a few hepatobiliary centers that have experienced surgeons in both liver resection and liver *** efficacy and safety of this technique has already been demonstrated in the treatment of benign liver diseases,especially in the advanced alveolar ***,the application of ELRA for liver malignances has gained more ***,standardization of clinical practice norms and international consensus are still *** prognostic impact in these oncologic patients also needs further *** this review,we summarized the principles and recent progresses on ELRA.

关键词： Ex vivo liver resection Liver auto-transplantation Oncology Liver malignancies

Multi-scale persistent spatiotemporal transformer for long-term urban traffic flow prediction

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Journal of Electronic Science and Technology 2024年第1期22卷 53-69页

作者： Jia-Jun Zhong Yong Ma xin-zheng Niu Philippe Fournier-Viger Bing Wang Zu-kuan Wei School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China College of Computer Science&Software Engineering Shenzhen UniversityShenzhen518060China School of Computer Science Southwest Petroleum UniversityChengdu610500China

Long-term urban traffic flow prediction is an important task in the field of intelligent transportation,as it can help optimize traffic management and improve travel *** improve prediction accuracy,a crucial issue is how to model spatiotemporal dependency in urban traffic *** recent years,many studies have adopted spatiotemporal neural networks to extract key information from traffic ***,most models ignore the semantic spatial similarity between long-distance areas when mining spatial *** also ignore the impact of predicted time steps on the next unpredicted time step for making long-term ***,these models lack a comprehensive data embedding process to represent complex spatiotemporal *** paper proposes a multi-scale persistent spatiotemporal transformer(MSPSTT)model to perform accurate long-term traffic flow prediction in *** adopts an encoder-decoder structure and incorporates temporal,periodic,and spatial features to fully embed urban traffic data to address these *** model consists of a spatiotemporal encoder and a spatiotemporal decoder,which rely on temporal,geospatial,and semantic space multi-head attention modules to dynamically extract temporal,geospatial,and semantic *** spatiotemporal decoder combines the context information provided by the encoder,integrates the predicted time step information,and is iteratively updated to learn the correlation between different time steps in the broader time range to improve the model’s accuracy for long-term *** on four public transportation datasets demonstrate that MSPSTT outperforms the existing models by up to 9.5%on three common metrics.

关键词： Graph neural network Multi-head attention mechanism Spatio-temporal dependency Traffic flow prediction

Mobile genetic elements facilitate the transmission of antibiotic resistance genes in multidrug-resistant Enterobacteriaceae from duck farms

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Food Science and Human Wellness 2024年第2期13卷 729-735页

作者： xin’er zheng Dingting Xu Jinchang Yan Min Qian Peng Wang Davood Zaeim Jianzhong Han Daofeng Qu School of Food Science and Biotechnology Zhejiang Gongshang UniversityHangzhou 310035China The Second Affiliated Hospital School of MedicineZhejiang UniversityHangzhou 311100China Agricultural and rural Bureau of Wangdian Town Xiuzhou DistrictJiaxing 314011China

Multidrug-resistant(MDR)Enterobacteriaceae critically threaten duck farming and public *** phenotypes,genotypes,and associated mobile genetic elements(MGEs)of MDR Enterobacteriaceae isolated from 6 duck farms in Zhejiang Province,China,were investigated.A total of 215 isolates were identified as Escherichia coli(64.65%),Klebsiella pneumoniae(12.09%),Proteus mirabilis(10.23%),Salmonella(8.84%),and Enterobacter cloacae(4.19%).Meanwhile,all isolates were resistant to at least two *** isolates carried tet(A)(85.12%),blaTEM(78.60%)and sul1(67.44%)resistance *** co-occurrence analysis showed that the resistance genes were associated with IS26 and integrons.A conjugative IncFII plasmid pSDM004 containing all the above MGEs was detected in Proteus mirabilis isolate *** isolate was resistant to 18 antibiotics and carried the blaNDM-5 ***,especially plasmids,are the primary antibiotic resistance gene transmission route in duck *** findings provide a theoretical basis for the rational use of antibiotics in farms which are substantial for evaluating public health and food safety.

关键词： Duck farm Mobile genetic element Antibiotic resistance gene Plasmid Food safety

Rational management of the plant microbiome for the Second Green Revolution

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Plant Communications 2024年第4期5卷 1-15页

作者： Xiaofang Li xin zheng Nikita Yadav Shouvik Saha El-Sayed Salama Xiangkai Li Likun Wang Byong-Hun Jeon Center for Agricultural Resources Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021China Department of Earth Resources and Environmental Engineering Hanyang UniversitySeoul 04763South Korea Natural Resources Research Institute University of Minnesota DuluthHermantownMN 55811USA Department of Biotechnology Brainware UniversityBarasatKolkata 700125West BengalIndia Department of Occupational and Environmental Health School of Public HealthLanzhou UniversityLanzhouGansu 730000China Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life ScienceLanzhou UniversityLanzhouGansu 730000China

The Green Revolution of the mid-20th century transformed agriculture worldwide and has resulted in envi-ronmental challenges.A new approach,the Second Green Revolution,seeks to enhance agricultural pro-ductivity while minimizing negative environmental *** microbiomes play critical roles in plant growth and stress responses,and understanding plant–microbiome interactions is essential for developing sustainable agricultural practices that meet food security and safety challenges,which are among the United Nations Sustainable Development *** review provides a comprehensive exploration of key deterministic processes crucial for developing microbiome management strategies,including the host effect,the facilitator effect,and microbe–microbe interactions.A hierarchical framework for plant mi-crobiome modulation is proposed to bridge the gap between basic research and agricultural *** framework emphasizes three levels of modulation:single-strain,synthetic community,and in situ mi-crobiome ***,rational management of plant microbiomes has wide-ranging applications in agriculture and can potentially be a core technology for the Second Green Revolution.

关键词： Second Green Revolution plant microbiome rational management host effect microbiome heritability

Protein C deficiency with venous and arterial thromboembolic events

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World Journal of Clinical Cases 2024年第12期12卷 2000-2003页

作者： Nan Zhang Dong-Kun Sun Xu Tian xin-Yu zheng Tong Liu Department of Cardiology Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular DiseaseTianjin Institute of CardiologyThe Second Hospital of Tianjin Medical UniversityTianjin 300211China

Protein C(PC)is a key component of the vitamin K-dependent coagulation *** exerts anticoagulant effects by inactivating factors V and *** or inherited PC deficiency results in a prothrombotic state,with presentations varying from asymptomatic to venous ***,there has been an increasing number of reports linking PC deficiency to arterial thromboembolic events,such as myocardial infarction and ischemic *** editorial focuses on the association between PC deficiency and thromboembolism,which may provide some insights for treatment strategy and scientific research.

关键词： Protein C deficiency Venous thromboembolism Myocardial infarction Editorial Arterial thromboembolism

Highly reversible photomodulated hydrosoluble stiff-stilbene supramolecular luminophor induced by cucurbituril

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Chinese Chemical Letters 2024年第8期35卷 235-239页

作者： Guoxing Liu Yixin Li Changming Tian Yongmei Xiao Lijie Liu Zhanqi Cao Song Jiang xin zheng Caoyuan Niu Yun-Lai Ren Liangru Yang Xianfu zheng Yong Chen College of Science Henan Agricultural UniversityZhengzhou 450002China College of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China College of Chemistry State Key Laboratory of Elemento-Organic ChemistryNankai UniversityTianjin 300071China

A photochromic molecular rotor based on stiff-stilbene(SSB-FMR)was handily prepared through coupled reaction,and further self-assembled with cucurbit[8]uril(CB[8])to form a 2:2 quaternary supramolecu-lar complex(SSB-FMR/CB[8]).Significantly,the intervention of CB[8]on SSB-FMR achieved dual functions that assembly-induced emission enhancement and assembly-induced improvement of photoisomerized performance(especially reversibility)of stiff-stilbene molecular *** supramolecular strategy further facilitated the assembly as a photoresponsive fluorescence switch with outstanding fatigue resis-tance,which was expediently applied in high-security-level QR code anti-counterfeiting and controllable lysosome targeted *** study unprecedentedly provides a supramolecular method for highly effi-ciently improving photoisomerized performance especially reversibility of molecular photoswitches based on stiff-stilbene,and is of vital significance for the construction of intelligent materials with excellent ca-pability.

关键词： Host-guest complexation Cucurbituril Fluorescence switch Stiff-stilbene Fluorescence enhancement

氮掺杂石墨碳负载Fe–Mn普鲁士蓝类似物衍生的FeMnO的制备及活化单过硫酸盐去除罗丹明B

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硅酸盐学报 2024年第5期52卷 1578-1588页

作者：郑佳红郑馨长安大学材料科学与工程学院西安710021

非均相催化剂活化单过硫酸盐(PMS)是一种有效的有机污染物降解技术,但硫酸根自由基(SO_(4)^(-)·)受限于较高的氧化还原电位难以得到有效激活。采用高温碳化法合成了过渡族双金属氧化物(Fe_(0.099)Mn_(0.901)O/Fe Mn_(2)O_(4))氮掺杂碳... 详细信息

非均相催化剂活化单过硫酸盐(PMS)是一种有效的有机污染物降解技术,但硫酸根自由基(SO_(4)^(-)·)受限于较高的氧化还原电位难以得到有效激活。采用高温碳化法合成了过渡族双金属氧化物(Fe_(0.099)Mn_(0.901)O/Fe Mn_(2)O_(4))氮掺杂碳纳米片催化剂,在PMS活化体系中,FeMnO@C在10 min内对罗丹明B(RhB)的降解效率达到95.5%。FeMnO@C催化剂表面Mn、Fe离子之间的氧化还原循环过程同PMS自分解后产生的一系列自由基,使得FeMnO@C保持优异的催化降解性能。捕获实验表明1O2是主要贡献自由基。此外,FeMnO@C催化剂磁性可回收具有良好的循环稳定性,在连续5次循环后仍保持84.7%的Rh B去除率。

关键词：铁、锰普鲁士蓝类似物氮掺杂碳材料高级氧化技术