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A review of research progress on continuous cropping obstacles

Frontiers of Agricultural Science and Engineering 2024年第2期11卷 253-270页

作者： Kunguang wang Qiaofang LU Zhechao DOU Zhiguang chi Dongming CUI Jing MA Guowei wang Jialing KUANG Nanqi wang Yuanmei ZUO College of Resources and Environmental Sciences State Key Laboratory of Nutrient Use and ManagementNational Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijing 100193China College of Resources and Environmental Sciences Southwest UniversityChongqing 400715China Yunnan ICL YTH Phosphate Research and Technology Co. Ltd.Kunming 650228China

Due to the increasing global population and limited land resources, continuous cropping has become common. However, after a few years of continuous cropping, obstacles often arise that cause soil degeneration, decreased crop yield and quality, and increased disease incidence, resulting in significant economic losses. It is essential to understand the causes and mitigation mechanisms of continuous cropping obstacles(CCOs) and then develop appropriate methods to overcome them. This review systematically summarizes the causes and mitigation measures of soil degradation in continuous cropping through a meta-analysis. It was concluded that not all continuous cropping systems are prone to CCOs. Therefore, it is necessary to grasp the principles governing the occurrence of diseases caused by soilborne pathogens in different cropping systems, consider plant–soil-organisms interactions as a system, scientifically regulate the physical and chemical properties of soils from a systems perspective, and then regulate the structure of microbial food webs in the soil to achieve a reduction in diseases caused by soilborne pathogens and increase crop yield ultimately. This review provides reference data and guidance for addressing this fundamental problem.

关键词： Continuous cropping obstacles rhizosphere regulation soil microecological environment

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Non-linear dynamic state-space network modeling for decoding neurodegeneration

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Neural Regeneration Research 2024年第9期19卷 1879-1880页

作者： Venkata C.chirumamilla chi wang Ip Martin Reich Robert Peach Jens Volkmann Bahman Nasseroleslami Muthuraman Muthuraman Prenatal Pediatrics Institute Children’s National HospitalWashingtonDCUSA Neural Engineering with Signal Analytics and Artificial Intelligence Department of NeurologyUniversity of WürzburgWürzburgGermany Academic Unit of Neurology Trinity Biomedical Sciences InstituteTrinity College DublinUniversity of DublinDublinIreland

Neurodegenerative disorders represent a pervasive global health challenge,yet therapeutic options remain conspicuously *** disorders are inherently dynamic processes within the central nervous system,unfolding across distinct sub-stages:initial structural neuronal alterations(sub-stage 1),functional impairment(sub-stage 2),and culminating in neuronal death(sub-stage 3).

关键词： alterations impairment dynamic

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A modern survey method for determining live loads based on multi-source and open-access data on the Internet

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Frontiers of Structural and Civil Engineering 2024年第8期18卷 1135-1147页

作者： chi XU Jun CHEN Jie LI School of Civil Engineering Tongji UniversityShanghai 200092China The State Key Laboratory on Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China

Sufficient survey data are required to describe the stochastic behaviors of live ***,due to manual and on-site operation required by traditional survey methods,traditional surveys face challenges like occupant resistance,high costs,and long implementation *** study proposes a new survey method to access live load data online and *** samples are acquired from multi-source,open-access and dynamically updated data on the *** change intervals,geometrical dimensions and object quantities are obtained from transaction information,building attributes and virtual reality models on real estate websites,*** object weights are collected from commodity information on e-commerce *** integration of the aforementioned data allows for the extraction of necessary statistics to describe a live load *** proposed method is applied to a live load survey in china,covering 20040 m^(2),with around 90000 samples acquired for object weights and load *** survey results reveal that about 70%−80%of the amplitude statistics are attributable to 1/6 of the total object types.

关键词： live load online survey method data acquisition data integration

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Distinct molecular targets of ProEGCG from EGCG and superior inhibition of angiogenesis signaling pathways for treatment of endometriosis

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Journal of Pharmaceutical Analysis 2024年第1期14卷 100-114页

作者： Sze Wan Hung Massimiliano Gaetani Yiran Li Zhouyurong Tan Xu Zheng Ruizhe Zhang Yang Ding Gene chi Wai Man Tao Zhang Yi Song Yao wang Jacqueline Pui Wah Chung Tak Hang Chan Roman A.Zubarev chi chiu wang Department of Obstetrics&Gynaecology The Chinese University of Hong KongHong KongChina Division of Physiological Chemistry I Department of Medical Biochemistry and BiophysicsKarolinska InstitutetStockholmSE 17177Sweden Chemical Proteomics Core Facility Department of Medical Biochemistry and BiophysicsKarolinska InstitutetStockholmSE 17177Sweden Unit of Chemical Proteomics Science for Life Laboratory(SciLifeLab)StockholmSE 17177Sweden Center for Reproductive Medicine Henan Key Laboratory of Reproduction and GeneticsThe First Affiliated Hospital of Zhengzhou UniversityZhengzhou450003China Department of Chemistry McGill UniversityMontrealH3A2K6Canada Department of Pharmacological&Technological Chemistry I.M.Sechenov First Moscow State Medical UniversityMoscow119146Russia Reproduction and Development Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong KongChina School of Biomedical Sciences The Chinese University of Hong KongHong KongChina chinese University of Hong Kong-Sichuan University Joint Laboratory in Reproductive Medicine The Chinese University of Hong KongHong KongChina

Endometriosis is a common chronic gynecological disease with endometrial cell implantation outside the *** is a major pathophysiology in *** previous studies have demonstrated that the prodrug of epigallocatechin gallate(ProEGCG)exhibits superior anti-endometriotic and anti-angiogenic effects compared to epigallocatechin gallate(EGCG).However,their direct binding targets and underlying mechanisms for the differential effects remain *** this study,we demonstrated that oral ProEGCG can be effective in preventing and treating ***,1D and 2D Proteome Integral Solubility Alteration assay-based chemical proteomics identified metadherin(MTDH)and PX domain containing serine/threonine kinase-like(PXK)as novel binding targets of EGCG and ProEGCG,*** simulation and BioLayer interferometry were used to confirm their binding *** results showed that MTDH-EGCG inhibited protein kinase B(Akt)-mediated angiogenesis,while PXK-ProEGCG inhibited epidermal growth factor(EGF)-mediated angiogenesis via the EGF/hypoxia-inducible factor(HIF-1a)/vascular endothelial growth factor(VEGF)*** vitro and in vivo knockdown assays and microvascular network imaging further confirmed the involvement of these signaling ***,our study demonstrated that ProEGCG has superior therapeutic effects than EGCG by targeting distinct signal transduction pathways and may act as a novel antiangiogenic therapy for endometriosis.

关键词： Molecular targets ProEGCG EGCG Angiogenesis Treatment Endometriosis

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气力输送颗粒系统中静电的研究进展

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化工进展 2024年第2期43卷 565-578页

作者：刘浩宇赵彦琳姚军 wang chi-hwa 中国石油大学(北京)机械与储运工程学院清洁能源科学与技术国际联合实验室过程流体过滤与分离技术北京市重点实验室北京102249 新加坡国立大学化学与生物分子工程系新加坡肯特岗117585

在过去的几十年里,由于许多工业问题和相关新技术的发展,颗粒和颗粒流的静电学得到了越来越多的关注。颗粒-颗粒和颗粒-壁面之间发生碰撞从而产生静电。静电的发生会受多种因素的影响,随着颗粒与壁面之间的接触会在它们的表面产生静电... 详细信息

在过去的几十年里,由于许多工业问题和相关新技术的发展,颗粒和颗粒流的静电学得到了越来越多的关注。颗粒-颗粒和颗粒-壁面之间发生碰撞从而产生静电。静电的发生会受多种因素的影响,随着颗粒与壁面之间的接触会在它们的表面产生静电荷的积累,静电量可以达到饱和状态。本文分别综述了气力输送颗粒系统中的静电发生及静电平衡,着重分析了颗粒与壁面之间接触带电的两种方式(碰撞带电和摩擦带电)、颗粒流模式及受力情况,讨论了颗粒带电过程所受的影响因素,包括外界条件(温度、相对湿度)、颗粒几何条件(尺寸、形状、接触面积、粗糙度)以及受力条件(摩擦力、常压)等。此外,对气力输送颗粒系统中静电的数值计算作了简单介绍。最后,为澄清气力输送颗粒系统中静电发生的机理,对单颗粒发生静电的物理机制进行了分析。根据对相关研究结果的总结,发现由于碰撞或摩擦造成的电荷转移的工作机制尚未完全明了,这些问题将在未来逐步得到解决。

关键词：静电效应颗粒气力输送接触带电

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Automated regression test method for scientific computing libraries:Illustration with SPHinXsys

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Journal of Hydrodynamics 2024年第3期36卷 466-478页

作者： Bo Zhang chi Zhang Xiangyu Hu TUM School of Engineering and Design Technical University of MunichMunichGermany

Scientific computing libraries,whether in-house or open-source,have witnessed enormous progress in both engineering and scientific ***,it is important to ensure that modifications to the source code,prompted by bug fixing or new feature development,do not compromise the accuracy and functionality that have been already validated and *** paper introduces a method for establishing and implementing an automatic regression test environment,using the open-source multi-physics library SPHinXsys as an illustrative ***,a reference database for each benchmark test is generated from observed data across multiple *** comprehensive database encapsulates the maximum variation range of metrics for different strategies,including the time-averaged,ensemble-averaged,and dynamic time warping *** accounts for uncertainties arising from parallel computing,particle relaxation,physical instabilities,and ***,new results obtained after source code modifications undergo testing based on a curve-similarity comparison against the reference *** the source code is updated,the regression test is automatically executed for all test cases,providing a comprehensive assessment of the validity of the current *** regression test environment has been successfully implemented in all dynamic test cases within SPHinXsys,including fluid dynamics,solid mechanics,fluid-structure interaction,thermal and mass diffusion,reaction-diffusion,and their multi-physics couplings,and demonstrates robust capabilities in testing different *** is noted that while the current test environment is built and implemented for a particular scientific computing library,its underlying principles are generic and can be easily adapted for use with other libraries,achieving equal effectiveness.

关键词： Scientific computing open-source library verification and validation regression test automatic test environment curve similarity comparison smoothed particle hydrodynamics

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Global collaboration of eye research--personal experience

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International Journal of Ophthalmology(English edition) 2024年第6期17卷 985-990页

作者： chi-Chao Chan Laboratory of Immunology National Eye InstituteNational Institutes of HealthBethesdaMD 20892-1858USA Zhongshan Ophthalmic Center Sun Yat-sen UniversityGuangzhou 5410060Guangdong ProvinceChina

On December 9,2023,I was privileged to be honored and participate in the *** Chao Chan Symposium on Global Collaboration of Eye Research as the Global Eye Genetic Consortium(GEGC)session,which was held in the 16th Congress of the Asia-Pacific Vitreo-Retina Society(APVRS)in Hong *** with my talk on“Global collaboration of eye research:personal experience”,other prominent international speakers provided their own perspectives on opportunities for networking,collaboration,and exchange of ideas with global leaders and experts in ophthalmic practice,research,and education.

关键词： speakers collaboration Global

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Fixed-Time Cluster Optimization for Multi-Agent Systems Based on Piecewise Power-Law Design

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1301-1303页

作者： Suna Duan Xinchun Jia Xiaobo chi School of Mathematical Sciences Shanxi UniversityTaiyuan 030006China School of Automation and Software Engineering Shanxi UniversityTaiyuan 030013China

Dear Editor,This letter focuses on the fixed-time(FXT)cluster optimization problem of first-order multi-agent systems(FOMASs)in an undirected network,in which the optimization objective is the sum of the objective functions of all clusters.A novel piecewise power-law control protocol with cooperative-competition relations is ***,a sufficient condition is obtained to ensure that the FOMASs achieve the cluster consensus within an FXT.

关键词： agent cluster optimization

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Compliant Iontronic Triboelectric Gels with Phase-Locked Structure Enabled by Competitive Hydrogen Bonding

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Nano-Micro Letters 2024年第9期16卷 180-194页

作者： Guoli Du Yuzheng Shao Bin Luo Tao Liu Jiamin Zhao Ying Qin Jinlong wang Song Zhang Mingchao chi Cong Gao Yanhua Liu Chenchen Cai Shuangfei wang Shuangxi Nie School of Light Industry and Food Engineering Guangxi UniversityNanning 530004People’s Republic of China

Rapid advancements in flexible electronics technology propel soft tactile sensing devices toward high-level biointegration,even attaining tactile perception capabilities surpassing human ***,the inherent mechanical mismatch resulting from deficient biomimetic mechanical properties of sensing materials poses a challenge to the application of wearable tactile sensing devices in human-machine *** by the innate biphasic structure of human subcutaneous tissue,this study discloses a skin-compliant wearable iontronic triboelectric gel via phase separation induced by competitive hydrogen ***-nonsolvent interactions are used to construct competitive hydrogen bonding systems to trigger phase separation,and the resulting soft-hard alternating phase-locked structure confers the iontronic triboelectric gel with Young’s modulus(6.8-281.9 kPa)and high tensile properties(880%)compatible with human *** abundance of reactive hydroxyl groups gives the gel excellent tribopositive and self-adhesive properties(peel strength>70 N m^(−1)).The self-powered tactile sensing skin based on this gel maintains favorable interface and mechanical stability with the working object,which greatly ensures the high fidelity and reliability of soft tactile sensing *** strategy,enabling skin-compliant design and broad dynamic tunability of the mechanical properties of sensing materials,presents a universal platform for broad applications from soft robots to wearable electronics.

关键词： Triboelectric nanogenerator Cellulose Triboelectric gel Self-powered sensor Energy harvesting

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Tomographic reconstruction of the Earth’s magnetosheath from multiple spacecraft:a theoretical study

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Earth and Planetary Physics 2024年第1期8卷 204-214页

作者： A.M.Jorgensen TianRan Sun Y.Huang L.Li R.Xu L.Dai chi wang New Mexico Institute of Mining and Technology SocorroNMUSA National Space Science Center Chinese Academy of SciencesBeijing 100190China Tsinghua University Beijing 100084China

Following our earlier work on tomographic reconstruction of the magnetosheath soft X-ray emissions with superposed epoch analysis of many images recorded from a single spacecraft we now explore the instantaneous reconstruction of the magnetosheath and magnetopause using a few images recorded simultaneously from a few *** work is motivated by the prospect of possibly having two or three soft X-ray imagers in space in the coming years,and that many phenomena which occur at the magnetopause boundary,such as reconnection events and pressure pulse responses,do not lend themselves as well to superposed epoch *** the reconstruction is successful-which we demonstrate in this paper that it can be-this collection of imagers can be used to reconstruct the magnetosheath and magnetopause from a single image from each spacecraft,allowing for high time resolution *** this paper we explore the reconstruction using,two,three,and four *** show that the location of the subsolar point of the magnetopause can be determined with just two satellites,and that volume emissions of soft X-rays,and the shape of the boundary,can be reconstructed using three or more satellites.

关键词： magnetosheath tomography soft X-ray imaging SMILE

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