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Intensified warming suppressed the snowmelt in the Tibetan Plateau

Advances in Climate Change Research 2024年第3期15卷 452-463页

作者： Xiang LI Peng CUI xue-qin zhang Fang zhang Key Lab of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China China‒Pakistan Joint Research Center on Earth Sciences Chinese Academy of Sciences and Higher Education CommissionIslamabad 45320Pakistan

Understanding how hydrological factors interrelate is crucial when examining the impact of climate warming on ***,these connections are often overlooked,leading to an unclear relationship between temperature and *** study investigates the complex interplay between temperature and snowmelt in the Tibetan Plateau from 1961 to 2020,focusing on how extreme high-temperature events affect the frequency of extreme *** a structural equation model,we detected three temperature-related factors that predominantly influenced snowmelt and extreme *** annual average temperature was found to have a significant indirect impact on snowmelt,mediated by changes in snowfall,snow depth and snow *** contrast,high-temperature days(daily maximum temperatures exceeding the 90th percentile)and heat waves(at least three consecutive high-temperature days)negatively affected extreme snowmelt directly or *** direct effect of increasing extreme temperature events was associated with an earlier onset of high-temperature periods,which accelerated snowmelt and shortened the duration of extreme snowmelt ***,the reduction in snow cover owing to warming emerged as a main factor suppressing snowmelt and extreme snowmelt *** also revealed spatiotemporal variations in the temperature‒snowmelt relationship that highly depended on changes in snowmelt *** study elucidated why warming suppresses snowmelt and extreme snowmelt events in the Tibetan Plateau,highlighting the mediating roles of snow-related and phenological *** findings will provide scientific support for climate simulation and water management policymaking in alpine regions worldwide.

关键词： Climate change Extreme temperature Snowmelt Structural equation model Tibetan Plateau

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Experimental and numerical investigation of the impacts of rotor tip-rake on excitation forces of pump-jet propulsors

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Journal of Hydrodynamics 2024年第1期36卷 142-157页

作者： xue-qin Ji Xiao-song zhang Chen-jun Yang Xiao-qian Dong State Key Laboratory of Ocean Engineering Marine Numerical Experiment CentreSchool of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China CSSC Shanghai Marine Energy Saving Technology Co. Ltd.Shanghai200011China China Ship Scientific Research Center Shanghai Branch Shanghai200011China

The tip-clearance flow in a pump-jet propulsor exerts great impacts on the fluctuating pressures and resultant unsteady forces,which are important sources of structural vibrations and radiated noise *** blade geometry close to the tip is an important factor determining the vortex strength in the tip-clearance *** the open-water condition,the effects of raking the rotor tips on the duct-surface fluctuating pressures and the resultant unsteady forces acting on different components of the propulsor are investigated via physical model experiments and the numerical solution of Reynolds-averaged Navier-Stokes(RANS)equations coupled with the SST k-ωturbulence *** measured and simulated results of hydrodynamic pressures are consistent to each other,and the simulated flows help better understand why the fluctuating pressures change with the tip *** strong fluctuations of duct-surface pressures are caused by intensive tip separation *** duct-surface pressure fluctuations are effectively reduced by using the rake distribution near the tip towards blade back side and,for the combination of the five-bladed rotor and the seven-bladed stator,the resultant unsteady horizontal(and vertical)forces acting on the duct and stator are also reduced;while increasing rake leads to negative effect on pressure fluctuations and unsteady horizontal(and vertical)forces acting on all the components of the propulsor.

关键词： Pump-jet tip-clearance tip-rake fluctuating pressures excitation forces

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Novel aqueous rechargeable nickel//bismuth battery based on highly porous Bi_(2)WO6 and Co_(0.5)Ni_(0.5)MoO_(4) microspheres

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Rare Metals 2023年第3期42卷 902-915页

作者： Wei-Wei Kang Ya-Nan Zhao Wen-qing zhang Ying Sun xue-qin zhang Gui-Yun Yi Guang-Xu Huang Bao-Lin Xing Chuan-Xiang zhang Bao-Ping Lin College of Chemistry and Chemical Engineering Henan Polytechnic UniversityJiaozuo 454003China School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China

Developing high performances aqueous rechargeable batteries is imperative and ***,a novel aqueous rechargeable nickel//bismuth battery is developed based on highly porous Bi_(2)WO_(6) and Co_(0.5)Ni_(0.5)MoO_(4) microspheres as electrode active *** Bi_(2)WO6 microspheres assembled from nanosheets as anode active materials can afford a specific capacity of179.2 mAh·g^(-1) at 1 A·g^(-1),rate capability of 74.7%in 1-20 A·g^(-1),and capacity retention of 57.2%for 1500 cycles at 15 A·g^(-1).Owing to the highly porous microsphere with’ribbon’-like and intertwined nanolayers morphology,the screened Co0.5Ni0.5MoO4 cathode active materials present an outstanding specific surface area of 293 m^(2)·g^(-1)and excellent electrochemical performance(such as superior specific capacity of 113.2 mAh·g^(-1) at 1 A·g^(-1),high rate performance of 51.8%in 1-15 A·g^(-1),and good capacity retention of 48.5%for 4600 cycles at15 A·g^(-1)).The corresponding aqueous rechargeable nickel//bismuth battery delivers the maximum energy density and power density of 35.8 Wh·kg^(-1) and3238.5 W·kg^(-1),*** present research would offer a worthwhile guidance for the effective construction of electrode active materials for aqueous rechargeable nickel//bismuth batteries.

关键词： Aqueous rechargeable batteries(ARBs) Porous Co_(0.5)Ni_(0.5)MoO_(4) Bi_(2)WO microspheres Energy storageandconversion

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The stance and factors of international organizations towards countries from a Chinese perspective

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Data Intelligence 2024年第1期6卷 158-182页

作者： qin zhang Haili xue Yaotian Wang Yao Wang Ziqin zhang qinghua qin Haoguang Liang National Science Library Chinese Academy of Sciences100190China China Center for Modernization Research 100190China Beijing International Studies University 100024China Beijing Key Laboratory of National Belt and Road Data Analysis and Decision Support 100024China University College London WC1E 6BTUK

The degree and scope of constraints imposed by International Organizations(IOs)on States are increasing,and identifying the factors affecting the IOs’stances on States is helpful to enhance the state's discourse power and influence in the international ***,by coding the records of Regular Press Conferences of the Speaking Office of the Chinese Ministry of Foreign Affairs during the period of 20182022,we obtained a dataset of IOs’stances on China-related ***,we constructed political relation,economic relation,and humanistic relation indicators to complement the influence factors,adopted the Bayesian logit model,and applied the Monte Carlo Markov chain algorithm and Gibbs sampling to analyze the probability of IOs’positive stances towards *** result shows that IOs’category,length of establishment,functional position,and relationship with China are all related to their tendency of making a statement about *** terms of the heterogeneity of event types,forum-type IOs are significantly inclined to give positive assessment compared to service-type IOs on events focusing on China's own *** analysis reveals that the model for analyzing and predicting the attitudes of IOs is more effective when the international situation is in a stable period.

关键词： Bayesian Logit Model IOs' stances Attitude analysis Monte Carlo Markov chain International relation indicator

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A Beautiful China Initiative Towards the Harmony between Humanity and the Nature

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Frontiers of Environmental Science & Engineering 2024年第6期18卷 33-41页

作者： Changbo qin Qiang xue Jiawei zhang Lu Lu Shangao Xiong Yang Xiao Xiaojing zhang Jinnan Wang Institute of Strategic Planning Chinese Academy of Environmental PlanningBeijing 100041China The Center for Beautiful China Chinese Academy of Environmental PlanningBeijing 100041China Chinese Academy of Environmental Planning Beijing 100041China

The Beautiful China Initiative(BCI)is a vivid embodiment of the harmonious coexistence between humans and nature during *** the BCI is an effective method for achieving the goals of building a beautiful China,while offering a“Chinese solution”to global sustainable *** article summarizes the progress and main experiences of the BCI,as well as analyzing the primary challenges facing its future ***,five policy recommendations are proposed,which emphasize the importance of top-level design,coordinated planning,and a robust support system in the implementation of the BCI.

关键词： Beautiful China Initiative Ecological civilization Practice Policy suggestion

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An AIEgen nano-assembly for simultaneous detection of ATP and H_(2)S

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Chinese Chemical Letters 2024年第6期35卷 376-379页

作者： Jia-Mei qin xue Li Wei Lang Fu-Hao zhang Qian-Yong Cao School of Chemistry and Chemical Engineering Nanchang UniversityNanchang 330031China

A new aggregation-induced emission(AIE)-based fluorescence sensor,TPEPy-SS-C14,for simultaneous recognition of adenosine triphosphate(ATP)and hydrogen sulfide(H_(2)S)has been reported via the aggregation-disaggregation *** probe self-assembles nano-structure aggregations in aqueous *** shows fluorescence turn-on response toward ATP for the complexation-enhanced aggregation,but leads to fluorescence quenching of H_(2)S for cleavage the aggregations.

关键词： AIE-based ATP detection H_(2)S detection Fluorescent sensor Cell imaging

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Random Forest-Based Fatigue Reliability-Based Design Optimization for Aeroengine Structures

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 665-684页

作者： xue-qin Li Lu-Kai Song School of Energy and Power Engineering Beihang UniversityBeijing100191China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityKowloonHong Kong999077China Research Institute of Aero-Engine Beihang UniversityBeijing100191China

Fatigue reliability-based design optimization of aeroengine structures involves multiple repeated calculations of reliability degree and large-scale calls of implicit high-nonlinearity limit state function,leading to the traditional direct Monte Claro and surrogate methods prone to unacceptable computing efficiency and *** this case,by fusing the random subspace strategy and weight allocation technology into bagging ensemble theory,a random forest(RF)model is presented to enhance the computing efficiency of reliability degree;moreover,by embedding the RF model into multilevel optimization model,an efficient RF-assisted fatigue reliability-based design optimization framework is *** the low-cycle fatigue reliability-based design optimization of aeroengine turbine disc as a case,the effectiveness of the presented framework is *** reliabilitybased design optimization results exhibit that the proposed framework holds high computing accuracy and computing *** current efforts shed a light on the theory/method development of reliability-based design optimization of complex engineering structures.

关键词： Random forest reliability-based design optimization ensemble learning machine learning

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CircFhit Modulates GABAergic Synaptic Transmission via Regulating the Parental Gene Fhit Expression in the Spinal Dorsal Horn in a Rat Model of Neuropathic Pain

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Neuroscience Bulletin 2023年第6期39卷 947-961页

作者： Ting Xu Zhen-Yu Li Meng Liu Su-Bo zhang Huan-Huan Ding Jia-Yan Wu Su-Yan Lin Jun Liu Jia-You Wei xue-qin zhang Wen-Jun Xin Neuroscience Program of Zhongshan School of Medicine and the Fifth Affiliated Hospital Sun Yat-sen UniversityGuangzhou510080China Guangdong Province Key Laboratory of Brain Function and Disease Sun Yat-sen UniversityGuangzhou510120China Department of Anesthesia and Pain Medicine Guangzhou First People’s HospitalGuangzhou510000China Department of Physiology Xuzhou Medical UniversityXuzhou221004China Department of Neurology The Second Affiliated HospitalGuangzhou Medical UniversityGuangzhou510000China Guangdong Provincial Engineering Research Center of Molecular Imaging Guangdong Provincial Key Laboratory of Biomedical Imagingand Department of Interventional MedicineThe Fifth Affiliated HospitalSun Yat-sen UniversityZhuhai519000China The Affiliated Brain Hospital(Guangzhou Huiai Hospital)and School of Health Management Guangzhou Medical UniversityGuangzhou510182China Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence Guangzhou510000China

Effective treatments for neuropathic pain are lacking due to our limited understanding of the *** circRNAs are mainly enriched in the central nervous ***,their function in various physiological and pathological conditions have yet to be ***,we identified circFhit,an exon-intron circRNA expressed in GABAergic neurons,which reduced the inhibitory synaptic transmission in the spinal dorsal horn to mediate spared nerve injury-induced neuropathic ***,we found that circFhit decreased the expression of GAD65 and induced hyperexcitation in NK1R^(+) neurons by promoting the expression of its parental gene Fhit in ***,circFhit was directly bound to the intronic region of Fhit,and formed a circFhit/HNRNPK complex to promote Pol II phosphorylation and H2B monoubiquitination by recruiting CDK9 and RNF40 to the Fhit *** summary,we revealed that the exon-intron circFhit contributes to GABAergic neuron-mediated NK1R^(+) neuronal hyperexcitation and neuropathic pain via regulating Fhit in cis.

关键词： Chronic pain Neuropathic pain CircRNA Inhibitory transmission Epigenetic regulation

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Efficacy of electroacupuncture on myocardial protection and postoperative rehabilitation in patients undergoing cardiac surgery with cardiopulmonary bypass:a systematic review and Meta-analysis

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Journal of Traditional Chinese Medicine 2024年第1期44卷 1-15页

作者： qin Xiaoyu WANG Chunai xue Jianjun zhang Jie LU Xiaoting DING Shengshuang GE Long WANG Minzhen the First Clinical Medical College Gansu University of Chinese MedicineLanzhou 730030China Department of Anesthesiology Gansu Provincial Hospital of Traditional Chinese MedicineLanzhou 730050China Evidence-based Medicine Center Lanzhou UniversityLanzhou 730030China Institute of Epidemiology and Statistics School of Public HealthLanzhou UniversityLanzhou 730030China

OBJECTIVE:To evaluate the efficacy of electroacupuncture(EA)intervention on myocardial protection and postoperative rehabilitation in patients undergoing cardiac surgery with cardiopulmonary bypass(CPB).METHODS:Eight databases,including Pub Med,Embase,the Cochrane Library,Web of Science,Chinese Bio Medical Literature Database,China National Knowledge Infrastructure Database,Wanfang Data,China Science and Technology Journal Database,and two clinical trial registries,were *** randomized controlled trials(RCTs)related to EA intervention in cardiac surgery with CPB were *** on the inclusion and exclusion criteria,two researchers independently screened articles and extracted *** the quality evaluation,RevMan 5.3 software was used for ***:Fourteen RCTs involving 836 patients were *** with the control treatment,EA significantly increased the incidence of cardiac automatic rebeat after aortic unclamping[relative risk(RR)=1.15,95%confidence interval(CI)(1.01,1.31),P<0.05;moderate].Twenty-four hours after aortic unclamping,EA significantly increased the superoxide dismutase[standardized mean difference(SMD)=0.96,95%CI(0.32,1.61),P<0.05;low],and interleukin(IL)-2[SMD=1.33,95%CI(0.19,2.47),P<0.05;very low]expression levels and decreased the malondialdehyde[SMD=-1.62,95%CI(-2.15,-1.09),P<0.05;moderate],tumour necrosis factor-α[SMD=-1.28,95%CI(-2.37,-0.19),P<0.05;moderate],and cardiac troponin I[SMD=-1.09,95%CI(-1.85,-0.32),P<0.05;low]expression levels as well as the inotrope scores[SMD=-0.77,95%CI(-1.22,-0.31),P<0.05;high].There was no difference in IL-6 and IL-10 expression *** amount of intraoperative sedative[SMD=-0.31,95%CI(-0.54,-0.09),P<0.05;moderate]and opioid analgesic[SMD=-0.96,95%CI(-1.53,-0.38),P<0.05;low]medication was significantly lower in the EA group than in the control ***,the postoperative tracheal intubation time[SMD=-0.92,95%CI(-1.40,-0.45),P<0.05;low]and intensive care unit stay[SMD=-1.

关键词： electroacupuncture cardiopulmonary bypass thoracic surgery myocardial ischaemia-reperfusion injury myocardial protection postoperative rehabilitation Meta-analysis randomized controlled trial

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Bioprinting of inorganic-biomaterial/neural-stem-cell constructs for multiple tissue regeneration and functional recovery

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National Science Review 2024年第4期11卷 228-244页

作者： Hongjian zhang Chen qin Zhe Shi Jianmin xue Jianxin Hao Jinzhou Huang Lin Du Hongxu Lu Chengtie Wu State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Tissue regeneration is a complicated process that relies on the coordinated effort of the nervous, vascular and immune systems. While the nervous system plays a crucial role in tissue regeneration, current tissue engineering approaches mainly focus on restoring the function of injury-related cells, neglecting the guidance provided by nerves. This has led to unsatisfactory therapeutic outcomes. Herein, we propose a new generation of engineered neural constructs from the perspective of neural induction, which offers a versatile platform for promoting multiple tissue regeneration. Specifically, neural constructs consist of inorganic biomaterials and neural stem cells(NSCs), where the inorganic biomaterials endows NSCs with enhanced biological activities including proliferation and neural differentiation. Through animal experiments, we show the effectiveness of neural constructs in repairing central nervous system injuries with function recovery. More importantly, neural constructs also stimulate osteogenesis, angiogenesis and neuromuscular junction formation, thus promoting the regeneration of bone and skeletal muscle, exhibiting its versatile therapeutic performance. These findings suggest that the inorganic-biomaterial/NSC-based neural platform represents a promising avenue for inducing the regeneration and function recovery of varying tissues and organs.

关键词： 3D bioprinting neural stem cells inorganic biomaterials neural constructs multiple tissue regeneration

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