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Young Entrepreneurs Help Revitalize Rural Areas in China

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China Report ASEAN 2024年第5期9卷 44-45页

作者： Li Xiaoyang the China institute of international Studies

Passion and effort are what led to Wang Jing becoming a CEO in her *** took on the role in June *** the e-commerce company she runs has only 10 employees,it’s playing a big role in boosting the economy of the village... 详细信息

关键词： Rural boosting becoming

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UPS AND DOWNS Economic and trade ties,a microcosm of *** over the last 45 years

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Beijing Review 2024年第1期67卷 12-15页

作者： Zhong Feiteng National institute of international Strategy

Over the past decades,the economic and trade relationship between China and the United States,which connects both sides of the Pacific like“thread and needle,”has gone through a process of rising from nothing and th... 详细信息

关键词： needle nothing UPS

Planetary health risks in urban agriculture

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Global health Journal 2024年第1期8卷 4-10页

作者： Nilanjana Ganguli Anna Maria Subic Janani Maheswaran Byomkesh Talukder Dahdaleh institute for Global health Research&Faculty of Environmental&Urban Change York UniversityTorontoOntario M3J1P3Canada Dalla Lana School of Public health University of TorontoTorontoOntario 5T3M7Canada Faculty of health York UniversityTorontoOntario M3J1P3Canada Department of Global health Florida International UniversityMiamiFlorida 33199USA

Urban agriculture is gaining recognition for its potential contributions to environmental resilience and climate change adaptation,providing advantages such as urban greening,reduced heat island effects,and decreased air ***,it indirectly supports communities during weather events and natural disasters,ensuring food security and fostering community ***,concerns about planetary health risks persist in highly urbanized and climate-affected *** electronic databases such as Web of Science and PubMed and adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines,we identified 55 relevant papers to comprehend the planetary health risks associated with urban agriculture,The literature review identified five distinct health risks related to urban agriculture:(1)trace metal risks in urban farms;(2)health risks associated with wastewater irrigation;(3)zoonotic risks;(4)other health risks;and(5)social and economic *** study highlights that urban agriculture,while emphasizing environmental benefits,particularly raises concerns about trace metal bioaccumulation in soil and vegetables,posing health risks for *** well studied risks included wastewater irrigation and backyard livestock *** main limitations in the available literature were in studying infectious diseases and antibiotic resistance associated with urban agriculture.

关键词： Urban agriculture Urbanization Systems-thinking Planetary health impacts Comprehensive risk analysis Planetary health Risks Analysis of Urban Agriculture Framework(PHRAUAF) Heuristic

The preface: Interplay of topological and magnetic orders in the Mn-Bi-Te family

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National Science Review 2024年第2期11卷 6-7页

作者： Fu-Chun Zhang Hai-Zhou Lu X.C.Xie Kavli institute for Theoretical Sciences University of Chinese Academy of Sciences Department of Physics Southern University of Science and Technology (SUSTech) international Center for Quantum Materials School of Physics Peking University

The discovery and synthesis of MnBi2Te4in 2013 initially garnered little attention [1]. Yet, the revelation of its topological properties in 2019 [2–6] sparked a surge of research into the MnBiTe family. These extensive studies are primarily driven by two objectives:the realization of a high-temperature quantum anomalous Hall effect （QAHE） and the exploration of exotic phases born from the interplay of topological and magnetic orders,

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Inducible RNA targeting and N^(6)-methyladenosine editing by a split-Cas13 architecture

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Journal of Molecular Cell Biology 2024年第1期16卷 66-69页

作者： Yang Li Qiang Sun Zhi Yang Gang Yuan international institutes of Medicine the Fourth Affiliated Hospital of Zhejiang University School of MedicineYiwu 322000China Department of Thoracic Surgery and institute of Thoracic Oncology West China HospitalSichuan UniversityChengdu 610041China Future health Laboratory Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China

Dear editor,Cas13,a class Ⅱ type Ⅵ CRISPR‒Cas endonuclease with two higher eukaryotes and prokaryotes nucleotide-binding(HEPN)domains,exclusively binds to and cleaves single-stranded RNA by a complementary guide RNA(gRNA)(Makarova et al.,2020).RfxCas13d(also known as CasRx)is an ortholog of CRISPR‒Cas13 with a relatively small size and robust RNA knockdown capability in mammalian cells(Konermann et al.,2018).Owing to its simplicity and high efficiency,CasRx has been applied for RNA targeting in various types of cells and ***,most of these studies failed to control the nuclease activity of CasRx *** re-engineered split-Cas9 system enables inducible genome editing and epigenetic modulation through chemical-induced reassembly of the Cas9 protein(Zetsche et al.,2015).However,tools that allow for efficient and controllable RNA knockdown by a split-Cas13 system remain to be established.

关键词： split system simplicity

Distinct Interannual Variability and Physical Mechanisms of Snowfall Frequency over the Eurasian Continent during Autumn and Winter

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Advances in Atmospheric Sciences 2024年第10期41卷 1969-1983+2101-2103页

作者： Siyu ZHOU Bo SUN Huijun WANG Yi ZHENG Jiarui CAI Huixin LI Botao ZHOU Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disasters Ministry of Education/Joint International Research Laboratory of Climate and Environment Change Nanjing University of Information Science and Technology Southern Marine Science and Engineering Guangdong Laboratory Nansen Zhu international Research Centre Institute of Atmospheric PhysicsChinese Academy of Sciences

This study investigates the dominant modes of interannual variability of snowfall frequency over the Eurasian continent during autumn and winter, and explores the underlying physical mechanisms. The first EOF mode(EOF1) of snowfall frequency during autumn is mainly characterized by positive anomalies over the Central Siberian Plateau(CSP)and Europe, with opposite anomalies over Central Asia(CA). EOF1 during winter is characterized by positive anomalies in Siberia and negative anomalies in Europe and East Asia(EA). During autumn, EOF1 is associated with the anomalous sea ice in the Kara–Laptev seas(KLS) and sea surface temperature(SST) over the North Atlantic. Increased sea ice in the KLS may cause an increase in the meridional air temperature gradient, resulting in increased synoptic-scale wave activity,thereby inducing increased snowfall frequency over Europe and the CSP. Anomalous increases of both sea ice in the KLS and SST in the North Atlantic may stimulate downstream propagation of Rossby waves and induce an anomalous high in CA corresponding to decreased snowfall frequency. In contrast, EOF1 is mainly affected by the anomalous atmospheric circulation during winter. In the positive phase of the North Atlantic Oscillation(NAO), an anomalous deep cold low(warm high) occurs over Siberia(Europe) leading to increased(decreased) snowfall frequency over Siberia(Europe). The synoptic-scale wave activity excited by the positive NAO can induce downstream Rossby wave propagation and contribute to an anomalous high and descending motion over EA, which may inhibit snowfall. The NAO in winter may be modulated by the Indian Ocean dipole and sea ice in the Barents-Kara-Laptev Seas in autumn.

关键词： atmospheric circulation Eurasian continent Indian Ocean dipole interannual variability sea ice snowfall frequency

Regulation of the pore structure of carbon nanosheets based electrocatalyst for efficient polysulfides phase conversions

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Journal of Materials Science & Technology 2024年第4期171卷 37-46页

作者： Xiaoyang Liu Jingbo Zhang Kangli Liu Shijie Zhang Rouhan Hou Xiaoyi Hu Peng Zhang Guosheng Shao State Center for international Cooperation on Designer Low-Carbon&Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Zhengzhou Materials Genome institute(ZMGI) Xingyang 450100China

The practical applications of lithium-sulfur(Li-S)batteries are hampered by the sluggish redox kinetics and polysulfides shuttle in the cyclic process,which leads to a series of problems including the loss of active materials and poor cycling *** this paper,the pore structures of carbon nanosheets based electrocatalysts were precisely controlled by regulating the content of water-soluble KCl *** relationship between pore structures and Li-S electrochemical behavior was studied,which demonstrates a key influence of pore structure in polysulfides phase *** the liquid-sloid redox reaction of polysulfides,the micropores and small mesopores(d20 nm)and macropores played a decisive *** a typical exhibition,the nickel-embedded carbon nanosheets(Ni-CNS)with a high content of large mesopores and macropores can aid Li-S batteries in exhibiting stable cycling performance(760.1 mAh g^(-1)at 1 C after 300 cycles)and superior rate capac-ity(847.8 mAh g^(-1)at 2 C).Furthermore,even with high sulfur loading(8 mg cm^(−2))and low electrolyte(E/S is around 6μL mg^(-1)),the high area capacity of 7.7 mAh cm^(−2)at 0.05 C could be *** work can provide a guideline for the design of the pore structure of carbon-based electrocatalysts toward high-efficiency sulfur species redox reactions,and afford a general,controllable,and simple approach to constructing high performance Li-S batteries.

关键词： Hierarchical porous carbon network Electrocatalyst Molten salt templating method Modified separators Li-S batteries

Experimental study on boundary lubricity of superficial area of articular cartilage and synovial fluid

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Friction 2024年第5期12卷 981-996页

作者： Wenxiao LI Takehiro MORITA Yoshinori SAWAE Departure of Mechanical Engineering Kyushu UniversityFukuoka8190395Japan international institute for Carton-Neutral Energy Research Kyushu UniversityFukuoka8190395Japan Advanced Research Center for Biomechanics Kyushu UniversityFukuoka8190395Japan

The boundary lubrication mechanism at the articulating surface of natural synovial joints has been the subject of much discussion in *** this study,to elucidate the lubricating function of the superficial area of articular cartilage and synovial fluid(SF),cartilage specimens were processed with four different treatments:gentle and severe washing with detergent,incubation in NaCl solution,and trypsin digestion to selectively remove certain constituents from the cartilage ***,the frictional characteristics were examined in phosphate-buffered saline(PBS)and SF against *** reciprocating sliding tests with a spherical glass probe and square articular cartilage specimens were performed at low contact loads in the mN range to extract the frictional behavior in the superficial area of the cartilage ***,the cartilage surface was observed to confirm the effects of treatments on the morphology of the cartilage surface using a fluorescence microscope and water-immersion *** coefficient of friction(COF)of the prepared cartilage specimens was varied from 0.05 to over 0.3 in ***,a certain group of cartilage specimens exhibited a low COF of less than 0.1 with limited *** the low COF group of specimens,all four treatments increased the COF in PBS to different extents,and fluorescence microscopy revealed that the integrity of the cartilage surface was deteriorated by *** means that the intact cartilage surface had lubricating constituents to maintain low friction,and the removal of such constituents resulted in the loss of the intrinsic boundary lubricity of the cartilage *** variation in the COF of the cartilage specimens was suppressed in SF because it had a clear boundary lubrication effect on the cartilage *** lubricating effect of SF could be confirmed even after degenerative treatment.

关键词： articular cartilage synovial fluid the uppermost superficial layer boundary lubrication

Persistent Variations in the East Asian Trough from March to April and the Possible Mechanism

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Advances in Atmospheric Sciences 2024年第4期41卷 737-753,I0002-I0004页

作者： Shui YU Jianqi SUN Nansen-Zhu international Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The East Asian trough(EAT)profoundly influences the East Asian spring *** this study,the relationship of the EATs among the three spring months is *** analysis shows that the variation in March EAT is closely related to that of April *** empirical orthogonal function(EEOF)analysis also confirms the co-variation of the March and April *** positive/negative EEOF1 features the persistent strengthened/weakened EAT from March to *** investigation indicates that the variations in EEOF1 are related to a dipole sea surface temperature(SST)pattern over the North Atlantic and the SST anomaly over the tropical Indian *** dipole SST pattern over the North Atlantic,with one center east of Newfoundland Island and another east of Bermuda,could trigger a Rossby wave train to influence the EAT in March−*** SST anomaly over the tropical Indian Ocean can change the Walker circulation and influence the atmospheric circulation over the tropical western Pacific,subsequently impacting the southern part of the EAT in March−*** the SST factors,the Northeast Asian snow cover could change the regional thermal conditions and lead to persistent EAT anomalies from March to *** three impact factors are generally independent of each other,jointly explaining large variations in the EAT ***,the signals of the three factors could be traced back to February,consequently providing a potential prediction source for the EAT variation in March and April.

关键词： spring East Asian trough sea surface temperature snow cover

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