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The Henan extreme rainfall in July 2021: Modulation of the northward-shift monsoon trough on the synoptic-scale wave train

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Advances in Climate Change Research 2022年第6期13卷 819-825页

作者： si-Hua HUANG Zhi-Ping WEN Xiao-Dan CHEN yuan-yuan GUO Zhe-Wen WANG Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai 200438China Institute of Eco-Chongming(IEC) Shanghai 200062China Innovation Center of Ocean and Atmosphere System Zhuhai Fudan Innovation Research InstituteZhuhai 518057China Jiangsu Collaborative Innovation Center for Climate Change Nanjing 210023China Zhumadian Meteorological Office Zhumadian 463000China

The synoptic-scale wave train is a dominant pattern of the synoptic variability over the tropical western Pacific and usually affects the extreme weather over South China and Southeast *** it could extend its influence and contribute to the Henan extreme rainfall in July 2021 still needs to be *** found that during the Henan extreme rainfall days a positively synoptic-scale vorticity disturbance dominated Henan province,China,which was embedded in the synoptic-scale wave train that originated from the western North ***,the propagating pathway of this synoptic-scale wave train located northward and was likely modulated by the latitudinal location change of the monsoon trough over the western North Pacific.A northernmost displacement of the monsoon trough in July 2021(∼23.2°N)would facilitate the synoptic-scale wave train to propagate farther northwestward via shifting the related barotropic conversion ***,the synoptic-scale wave train from the tropics could reach Henan,provide the necessary lifting forcing,and supply abundant water vapor associated with the anomalous southerly for the occurrence of Henan extreme rainfall *** results implicate that the pre-existing synoptic-scale wave train regulated by the location of the monsoon trough may be a potential precursor for heavy rainfalls in northern Central China.

关键词： Extreme rainfall Northern Central China Synoptic-scale wave train Monsoon trough Barotropic energy conversion

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Priming strategies for controlling stem cell fate: Applications and challenges in dental tissue regeneration

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World Journal of Stem Cells 2021年第11期13卷 1625-1646页

作者： si-yuan Zhang Jia-Yin Ren Bo Yang State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Oral Radiology West China Hospital of StomatologySichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Oral and Maxillofacial Surgery West China Hospital of StomatologySichuan UniversityChengdu 610041Sichuan ProvinceChina

Mesenchymal stromal cells(MSCs)have attracted intense interest in the field of dental tissue *** tissue is a popular source of MSCs because MSCs can be obtained with minimally invasive *** possess distinct inherent properties of self-renewal,immunomodulation,proangiogenic potential,and multilineage potency,as well as being readily available and easy to ***,major issues,including poor engraftment and low survival rates in vivo,remain to be resolved before large-scale application is feasible in clinical ***,some recent investigations have sought ways to optimize MSC functions in vitro and in ***,priming culture conditions,pretreatment with mechanical and physical stimuli,preconditioning with cytokines and growth factors,and genetic modification of MSCs are considered to be the main strategies;all of which could contribute to improving MSC efficacy in dental regenerative *** in this field has made tremendous progress and continues to gather interest and stimulate *** this review,we summarize the priming approaches for enhancing the intrinsic biological properties of MSCs such as migration,antiapoptotic effect,proangiogenic potential,and regenerative *** in current approaches associated with MSC modification and possible future solutions are also *** aim to outline the present understanding of priming approaches to improve the therapeutic effects of MSCs on dental tissue regeneration.

关键词： Mesenchymal stem cells Priming Dental regeneration Culture conditions Cytokines Growth factors Genetic modification

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DONOR-ACCEPTOR CONJUGATED COOLIGOMERS FOR siNGLE MOLECULE SOLAR CELLS

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Chinese Journal of Polymer Science 2013年第5期31卷 815-822页

作者： Jian-fei Qu Jian Liu si-da Li Zhi-yuan Xie 耿延候 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences University of Chinese Academy of Sciences

Five novel donor-acceptor （D-A） conjugated cooligomers （F4B-hP, F5B-hP, F5B2[1,2]-hP, F5B2[I,3]-hP and F7B2[1,2]-hP） were synthesized. The absorption spectra of the cooligomers cover a wide range from 300 nm to 630 nm. The cooligomers could form films featured by alternating D-A lamellar nanostructures with the periods relative to the molecular lengths after thermal annealing or solvent vapor annealing. single molecule solar cells were fabricated, and FSB-hP exhibited the best device performance. When the film of FSB-hP was thermally annealed, a power conversion efficiency （PCE） of 1.56% was realized. With solvent vapor annealing, the PCE could be further improved to 1.72% with a short-circuit current （J_SC） of 5.76 mA/cm2, an open-circuit voltage （Voc） of 0.87 V and a fill factor （FF） of 0.34.

关键词： single molecule solar cells Monodisperse conjugated oligomers Lamellar nanostructures Bulk heterojunctionsolar cells.

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Development of a preliminary slope stability calculation method based on internal horizontal displacements

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Journal of Mountain Science 2018年第5期15卷 1129-1136页

作者： PEI Hua-fu ZHANG si-qi BORANA Lalit yuan Bing Department of Geotechnical Engineering Dalian University of Technology Dalian 116024 China Department of Civil Engineering Indian Institute of Technology Indore Indore 453552 India. Shenzhen Graduate school Harbin Institute of Technology Shenzhen 518055 China

This paper proposes a horizontal displacement-based approach to determine the potential slip surface of the slope. Firstly, a group of in-situ inclinometers with an appropriate spacing in the horizontal direction is located in the model *** equation of horizontal displacement with time for each in-situ inclinometer is fitted during the whole simulation process. Furthermore, the intersection of each inclinometer with potential slip surface is determined by using an optimization model. The slip surface can be obtained by using least square fitting method. Finally, the feasibility and accuracy of the method are validated by a series of numerical simulations. It is noted that the optimization model taking the maximum value of displacement increment gradient as an objective has higher accuracy when compared with other optimization models. This method employed in this study provides a preliminary approach to determine the real-time slope stability based on displacement, which can also be measured by using conventional instruments on site.

关键词： Slip surface Slope stability analysis Optimization model Numerical simulation Displacement.

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Determination and discussion hydraulic retention time in membrane bioreactor system

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Journal of Environmental Sciences 2002年第4期14卷 501-507页

作者： ZHANGShao-yuan RenzevanHouten DickH.Eikelboom JIANGZhao-chun FANYao-bo WANGJu-si ResearchCenterforEco-EnvironmentalSciences ChineseAcademyofSciences（CAS）Beijing100085China EnvironmentalBiotechnologyDepartment TNOInstituteofEnvironmentalSciencesEnergyResearchandProcessInnovation7300AHApeldoomTheNetherlands

Based on the microorganism kinetic model, the formula for computing hydraulic retention time in a membrane bioreactor system (MBR) is derived. With considering HRT as an evaluation index a combinational approach was used to discuss factors which have an effect on MBR. As a result, the influencing factors were listed in order from strength to weakness as: maximum specific removal rate K , saturation constant K s, maintenance coefficient m , maximum specific growth rate μ m and observed yield coefficient Y obs . Moreover, the formula was simplified, whose parameters were experimentally determined in petrochemical wastewater treatment. The simplified formula is θ=1.1(1/β-1)(K s +S)/KX 0, for petrochemical wastewater treatment K and K s equaled 0 185 and 154.2, respectively.

关键词： membrane bioreactor wastewater treatment hydraulic retention time microbial kinetic model kinetic constant operation constant

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Acute generalized exanthematous pustulosis as a manifestation of Kawasaki disease

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World Journal of Pediatrics 2021年第5期17卷 557-559页

作者： Wen-Jie Wu Wen-Qun Zhang dao-Zhu si Yong-Chun Su Qin Xie Department of Pediatrics Chongqing Youyoubaobei Women and Children's HospitalNo.999Jiarong RoadYubei DistrictChongqing 401147China

Kawasaki disease(KD)is the leading cause of acquired heart disease in children *** patients with an onset of lymph node enlargement had a high incidence of coronary artery complications[1].It is important to recognize... 详细信息

关键词： Kawasaki enlargement diagnostic

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Task assignment in ground-to-air confrontation based on multiagent deep reinforcement learning

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Defence Technology（防务技术） 2023年第1期19卷 210-219页

作者： Jia-yi Liu Gang Wang Qiang Fu Shao-hua Yue si-yuan Wang Air and Missile Defense College Air Force Engineering UniversityXi'an710051China Air Force Engineering University Changle East RoadXi'anShaanxi710051China

The scale of ground-to-air confrontation task assignments is large and needs to deal with many concurrent task assignments and random *** at the problems where existing task assignment methods are applied to ground-to-air confrontation,there is low efficiency in dealing with complex tasks,and there are interactive conflicts in multiagent *** study proposes a multiagent architecture based on a one-general agent with multiple narrow agents(OGMN)to reduce task assignment *** the slow speed of traditional dynamic task assignment algorithms,this paper proposes the proximal policy optimization for task assignment of general and narrow agents(PPOTAGNA)*** algorithm based on the idea of the optimal assignment strategy algorithm and combined with the training framework of deep reinforcement learning(DRL)adds a multihead attention mechanism and a stage reward mechanism to the bilateral band clipping PPO algorithm to solve the problem of low training ***,simulation experiments are carried out in the digital *** multiagent architecture based on OGMN combined with the PPO-TAGNA algorithm can obtain higher rewards faster and has a higher win *** analyzing agent behavior,the efficiency,superiority and rationality of resource utilization of this method are verified.

关键词： Ground-to-air confrontation Task assignment General and narrow agents Deep reinforcement learning Proximal policy optimization(PPO)

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Progress in ab initio in-medium similarity renormalization group and coupled-channel method with coupling to the continuum

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Nuclear Science and Techniques 2024年第12期35卷 312-342页

作者： Xin‑Yu Xu si‑Qin Fan Qi yuan Bai‑Shan Hu Jian‑Guo Li si‑Min Wang Fu‑Rong Xu School of Physics and State Key Laboratory of Nuclear Physics and TechnologyPeking UniversityBeijing 100871China Southern Center for Nuclear‑Science Theory(SCNT)Institute of Modern Physics Chinese Academy of SciencesHuizhou 516000China National Center for Computational Sciences Oak Ridge National LaboratoryOak RidgeTN 37831USA Physics Division Oak Ridge National LaboratoryOak RidgeTN 37831USA Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Modern Physics Key Laboratory of Nuclear Physics and Ion‑beam Application(MOE) Fudan UniversityShanghai 200433China Shanghai Research Center for Theoretical Nuclear Physics NSFC and Fudan UniversityShanghai 200438China

Over the last decade,nuclear theory has made dramatic progress in few-body and ab initio many-body *** great advances stem from chiral efective feld theory(xEFT),which provides an efcient expansion and consistent treatment of nuclear forces as inputs of modern many-body calculations,among which the in-medium similarity renormalization group(IMSRG)and its variants play a vital *** the other hand,signifcant eforts have been made to provide a unifed description of the structure,decay,and reactions of the nuclei as open quantum *** a fully comprehensive and microscopic model has yet to be realized,substantial progress over recent decades has enhanced our understanding of open quantum systems around the dripline,which are often characterized by exotic structures and decay *** study these interesting phenomena,Gamow coupled-channel(GCC)method,in which the open quantum nature of few-body valence nucleons coupled to a deformed core,has been *** review focuses on the developments of the advanced IMSRG and GCC and their applications to nuclear structure and reactions.

关键词： Ab initio calculations Chiral efective feld theory In-medium similarity renormalization group Gamow coupled channel Resonance and continuum Open quantum systems

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Does cranial-medial mixed dominant approach have a unique advantage for laparoscopic right hemicolectomy with complete mesocolic excision?

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World Journal of Gastrointestinal Surgery 2022年第3期14卷 221-235页

作者： Li Lin si-Bo yuan Huan Guo Department of Gastrointestinal Surgery and Xiamen City Key Laboratory of Gastrointestinal Cancer Zhongshan HospitalXiamen UniversityXiamen 361000Fujian ProvinceChina

BACKGROUND Complete mesocolic excision(CME)with central vascular ligation(CVL)was proposed by Hohenberger in *** CME principle has gradually become the technical standard for colon cancer *** to achieve CME with CVL in laparoscopic right hemicolectomy(LRH)is controversial,and a unified standard approach is not yet *** recent years,the authors’team has integrated the theory of membrane anatomy,tried to combine the cephalic approach with the classic medial approach(MA)for technical optimization,and proposed a cranialmedial mixed dominant approach(CMA).AIM To explore the feasibility of operational approaches for LRH with *** In this retrospective cohort study,the clinical data of 57 patients with right-sided colon cancer(TNM stage I,II,or III)who underwent LRH with CME from January 2016 to June 2020 were collected and *** were 31 patients in the traditional MA group and 26 in the CMA *** There were no significant differences in baseline data between the two *** operation was shorter and the number of lymph nodes dissected was higher in the CMA group than in the MA group,but there was no significant difference in the number of positive lymph nodes,intraoperative blood loss,postoperative exhaust time,feeding time,postoperative hospital stay or postoperative complication *** Our study shows that the CMA is a safe and feasible procedure for LRH with CME and has a unique advantage.

关键词： Right hemicolectomy Laparoscopic surgery Complete mesocolic excision Mesocolon Embryology Colon cancer

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The universal applicability of logistic curve in simulating ecosystem carbon dynamic

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China Geology 2020年第2期3卷 292-298页

作者： Xue-yang Yu si-yuan Ye Key Laboratory of Coastal Wetland Biogeosciences Qingdao Institute of Marine GeologyChina Geological SurveyMinistry of Natural ResourcesQingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China

As an S-shaped curve,the logistic curve has both high and low limit,which provides advantages in modelling the influences of environmental factors on biogeological ***,although the logistic curve and its transformations have drawn much attention in theoretical modelling,it is often used as a classification method to determine a true or false condition,and is less often applied in simulating the real data *** from the basic theory of the logistic curve,with observed data sets,this paper explored the new application scenarios such as modelling the time series of environmental factors,modelling the influence of environmental factors on biogeological processes and modelling the theoretical curve in ecology *** comparing the performance of traditional model and the logistic model,the results indicated that logistic modelling worked as well as traditional *** certain conditions,such as modelling the influence of temperature on ecosystem respiration,the logistic model is more realistic than the widely applied Lloyd-Taylor formulation under extreme *** cases confirmed that the logistic curve was capable of simulating nonlinear influences of multiple factors on biogeological processes such as carbon dynamic.

关键词： Logistic curve Mathematical modelling Theoretical research Biogeological process Geological survey engineering

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