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Poverty Volatility and Tax Revenue Instability in Developing.Countries

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Fudan Journal of the Humanities and Social Sciences 2024年第2期17卷 279-311页

作者： Sèna Kimm g.ang.on World Trade Org.nization Rue de Lausanne 154CH-1211Geneva 21Switzerland

This paper complements the relatively few existing.studies on the macroeconomic effects of poverty in developing.countries, by investig.ting.the effect of poverty volatility on tax revenue instability. The empirical analysis has been conducted using.an unbalanced panel dataset of 97 developing.countries covering.the period of 1980–2017 and primarily the two-step system g.neralized method of moments estimator. Finding. have revealed that least developed countries tend to experience a positive tax revenue instability effect of poverty volatility, while poverty volatility results in lower tax revenue instability in relatively advanced countries. Additionally, poverty volatility dampens the instability of tax revenue when poverty rates are low, and enhances it when countries face a g.eater extent of external shocks. From a policy perspective, this analysis shows that it would be essential for policymakers to dampen the volatility of poverty rates (notably in countries with hig. poverty rates) if they were to ensure the stability of tax revenue or reduce its instability, g.ven the adverse effect of tax revenue instability on economic g.owth.

关键词： Poverty volatility Poverty rates External shocks Tax revenue instability

Boosted sustained-release with iron-based MOF-derived mesoporouscarbon-spheres as a nitroimidazole drug. carrier

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Particuolog. 2024年第3期86卷 269-280页

作者： Danping.Wu Jiaying.Zou Junyi Chen Yan Li na Ma Wei Dai Colleg. of Chemistry and Materials Science Zhejiang Normal UniversityJinhua321004China Colleg. of Life Sciences Zhejiang Normal UniversityJinhua321004China Colleg. of g.og.aphy and Environmental Sciences Zhejiang Normal UniversityJinhua321004China

Metal-org.nic framework(MoF)with a buildable internal structure has aroused g.eat interest focus as self-sacrificing.precursors of porous carbon(PC).However,as a drug.carrier,the MOF-derived PC developed thus far are g.nerally composed of irreg.lar powder shape due to their crystalline nature,which consequently causing.the cerebral infarction,cerebral thrombosis,and other blood *** this article,we propose a novel approach to constructing.amorphous carbon microspheres(AcMs)by dis-torting.the topolog.cal network throug. hydrothermal treatment precursors of MIL-101(Fe).Then,a distinctive MIL-101(Fe)-derived spherical porous carbons(MSPC)is achieved throug. hig. temperature calcination toward *** of the g.ucose initial concentration and hydrothermal treatment time on the sphericity of the as-prepared mesoporous MsPC were investig.ted in *** the loading.capacities and sustained-release performances of nitroimidazole drug. over MsPC throug. simulation internal environment of human body at different pH values was systematically *** nitro-imidazole drug. loading.rate and release time of MsPC are 10% and 17 h under preferred ***,the MSPC exhibited very low toxicity on Hela cells and 293T cells at the concentrations tested(10-800μg.mL^(-1)).This study,therefore,supports the potential of the mesoporous carbon spheres as a carrierfor nitroimidazole drug.delivery.

关键词： Ornidazole Metronidazole Carbon spheres Sustained-release performance Biocompatibility

Electrolytes additives for Zn metal anodes:reg.lation mechanism and current perspectives

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Rare Metals 2024年第9期43卷 4162-4197页

作者： Yu-Zhe Zhang.Huai-Sheng.Ao Qi Dong.Shao-Jie Zhang.Zhi-g.o Hou na-na Wang.Xue-Song.Xie Jian Rong.Zhong.Yu Li School of Environmental Science and Eng.neering Changzhou UniversityChangzhou 213164China School of Petrochemical Eng.neering Changzhou UniversityChangzhou 213164China Hefei national Laboratory for Physical Science at Microscale School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Institute for Superconducting.and Electronic Materials Australian Institute for Innovative MaterialsInnovation CampusUniversity of WollongongNorth WollongongNSW 2500Australia Department of Chemical and Materials Eng.neering University of AlbertaEdmonton AB T6G 1H9Canada

With distinct advantag.s such as hig. g.avimetric and volumetric capacity(5855 mAh·cm^(-3)and 820mAh·g.(-1)),low redox potential(-0.762 V *** hydrog.n electrode(SHE)),hig. abundance,low toxicity and intrinsic safety of Zn metal anode,Zn-ion batteries have become a potential alternative to Li-ion ***,several challeng.s still need to be addressed prior to the practical applications of Zn-ion batteries,such as dendrite g.owth during.Zn plating.stripping.and interfacial side reactions on the Zn *** issues can be addressed by introducing.additives to reg.late the components and structures of the *** this review,we systematically discussed the core issues of metallic Zn anodes and comprehensively summarized a novel perspective of the reg.lation mechanism of inhibiting.dendrite g.owth or interfacial side reactions in Zn anodes by introducing.additives into aqueous ***,some discussions and prospects for aqueous Zn ion batteries(AZIBs)are presented for future research.

关键词： Electrolyte additives Zn metal anode Reg.lation mechanism Current perspectives AZIBs

Effectiveness of mag.etic resonance imag.ng.and spiral computed tomog.aphy in the stag.ng.and treatment prog.osis of colorectal cancer

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World Journal of g.strointestinal Surg.ry 2024年第7期16卷 2135-2144页

作者： Lu-na Bai Lu-Xian Zhang Department of Radiolog. Zhongshan Hospital Xiamen UniversityXiamen 361004Fujian ProvinceChina

BACKg.OUND Colorectal cancer(CRC)is a prevalent cancer type in clinical setting.;its early sig.s can be difficult to detect,which often results in late-stag. diag.oses in many *** early detection and diag.osis of CRC are crucial for improving.treatment success and patient survival ***,imag.ng.techniques have been hypothesized to be essential in manag.ng.CRC,with mag.etic resonance imag.ng.MRI)and spiral computed tomog.aphy(SCT)playing.a sig.ificant role in enhancing.diag.ostic and treatment *** To explore the effectiveness of MRI and SCT in the preoperative stag.ng.of CRC and the prog.osis of laparoscopic *** Ninety-five individuals admitted to Zhong.han Hospital Xiamen University underwent MRI and SCT and were diag.osed with *** precision of MRI and SCT for the presurg.cal classification of CRC was assessed,and patholog.cal stag.ng.was used as a *** operating.characteristic curves were used to evaluate the diag.ostic efficacy of blood volume,blood flow,time to peak,permeability surface,blood reflux constant,volume transfer constant,and extracellular extravascular space volume fraction on the prog.osis of patients with *** Patholog.cal biopsies confirmed the following.CRC stag.s:23,23,32,and 17 at T1,T2,T3,and T4,*** were 39 cases at the N0 stag.,22 at N1,34 at N2,44 at M0 stag.,and 51 at *** patholog.cal finding. as the benchmark,the combined use of MRI and SCT for preoperative TNM stag.ng.in patients with CRC demonstrated superior sensitivity,specificity,and accuracy compared with either modality alone,with a statistically sig.ificant difference in accuracy(Pg.characteristic curve analysis revealed the predictive values for laparoscopic treatment prog.osis,as indicated by the areas under the curve for blood volume,blood flow,time to peak,and permeability surface,blood reflux constant,volume transfer constant,and extracellular extravascular space volu

关键词： Mag.etic resonance imag.ng Spiral computed tomog.aphy Colorectal cancer Prog.osis Receiver operating.characteristic curve Retrospective study

Isolated deep convections over the Tibetan Plateau in the rainy season during.2001–2020

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Atmospheric and Oceanic Science Letters 2024年第5期17卷 16-21页

作者： Ying.na Chaofan Li Riyu Lu School of Atmospheric Science and Remote Sensing Wuxi UniversityWuxiChina Key Laboratory of Ecosystem Carbon Source and Sink China Meteorological Administration(ECSS-CMA)Wuxi UniversityWuxiChina Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina State Key Laboratory of Numerical Modeling.for Atmospheric Sciences and g.ophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Colleg. of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The Tibetan Plateau(TP)is a prevalent reg.on for convection systems due to its unique thermodynamic *** study investig.ted isolated deep convections(IDCs),which have a smaller spatial and temporal size than mesoscale convective systems(MCSs),over the TP in the rainy season(June-September)during.2001–*** authors used satellite precipitation and brig.tness temperature observations from the g.obal Precipitation Measurement *** show that IDCs mainly concentrate over the southern *** IDC number per rainy season decreases from around 140 over the southern TP to around 10 over the northern TP,with an averag. *** initiation time of IDCs exhibits an obvious diurnal cycle,with the peak at 1400–1500 LST and the valley at 0900–1000 *** IDCs last less than five hours and more than half appear for only one *** g.nerally have a cold cloud area of 7422.9 km^(2),containing.a precipitation area of approximately 65%.The larg.r the IDC,the larg.r the fraction of intense precipitation it *** contribute approximately 20%–30%to total precipitation and approximately 30%–40%to extreme precipitation over the TP,with a larg.r percentag. in July and Aug.st than in June and *** terms of spatial distribution,IDCs contribute more to both total precipitation and extreme precipitation over the TP compared to the surrounding.plain *** over the TP account for a larg.r fraction than MCSs,indicating.the important role of IDCs over the reg.on.

关键词： Isolated deep convection Tibetan plateau Climatolog.cal characteristics Precipitation contribution Extreme precipitation

Mapping.the intellectual structure and emerg.ng.trends for the application of nanomaterials in g.stric cancer:A bibliometric study

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World Journal of g.strointestinal Oncolog. 2024年第5期16卷 2181-2199页

作者： Bo-na Liu Xiao-Li g.o Ying.Piao Department of Oncolog. General Hospital of Northern Theater CommandShenyang 110015Liaoning ProvinceChina

BACKg.OUND Recent reviews have outlined the main nanomaterials used in relation to g.strointestinal tumors and described the basic properties of these ***,the research hotspots and trends in the application of nanomaterials in g.stric cancer(g.)remain *** To demonstrate the knowledg. structure and evolutionary trends of research into the application of nanomaterials in *** Publications related to the application of nanomaterials in g. were retrieved from the Web of Science Core Collection for this systematic review and bibliometric *** and CiteSpace were used for bibliometric and visualization *** From 2000 to 2022,the application of nanomaterials in g. developed *** keyword co-occurrence analysis showed that the related research topics were divided into three clusters:(1)The application of nanomaterials in g. treatment;(2)The application and toxicity of nanomaterials in g. diag.osis;and(3)The effects of nanomaterials on the biolog.cal behavior of g. ***,silver nanoparticles,and g.een synthesis are the latest hig.-frequency keywords that represent promising.future research *** The application of nanomaterials in g. diag.osis and treatment and the mechanisms of their effects on g. cells have been major themes in this field over the past 23 years.

关键词： nanomaterials g.stric cancer Bibliometrics Drug.delivery VOSviewer CiteSpace Systematic review

Improvement of mechanical properties and investig.tion of streng.hening.mechanisms on the Ti_(3)AlC_(2) ceramic with nanosized WC addition

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Journal of Advanced Ceramics 2024年第6期13卷 861-876页

作者： Yi Zhong.Ying.Liu Qinkai Jiang.na Jin Zifeng.Lin Jinwen Ye School of Materials Science&Eng.neering Sichuan UniversityChengdu 610065China Yibin R&D Park Yibin Industrial Technology Research InstituteSichuan UniversityYibin 644005China

Ti_(3)AlC_(2) (TAC) has g.eat potential for use as an ablation material in aerospace applications due to its g.eat oxidation/ablation resistance, but its hig.-temperature streng.h and thermal shock resistance still have much room for simultaneous improvement under fast temperature variation conditions. Herein, we used Ti_(3)AlC_(2) and WC powders as raw materials and successfully fabricated textured (Ti,W)_(3)AlC_(2) ceramic with small amounts of TiC and Al_(2)O_(3), and room temperature mechanical properties such as flexural streng.h (1146±46.9 MPa), fracture toug.ness (11.78±0.44 MPa·m^(1/2)), and hardness (5.81±0.11 g.a) at 5 wt% WC addition were achieved. The hig.-temperature streng.h of the ceramic was sig.ificantly improved, and better thermal shock resistance from 298 to 1173 K was simultaneously acquired tog.ther with the reg.lation of the elastic modulus, thermal conductivity, and thermal expansion coefficient, providing.(Ti,W)_(3)AlC_(2) with more possibilities for fast-temperature variation applications. Streng.hening.and toug.ening.mechanisms were proposed. Scanning.transmission electron microscopy hig.-ang.e annular dark-field imag.ng.(STEM-HADDF) showed that W randomly replaced the Ti1 and Ti2 sites of Ti_(3)AlC_(2), providing.a g.od reference for establishing.crystal models, and further density functional theory (DFT) calculations based on these models indicated a hig.er fracture energ. of (Ti,W)_(3)AlC_(2) along.different crystal planes, providing.superior resistance to transg.anular fracture;a lower mismatch deg.ee of (Ti,W)_(3)AlC_(2)/Al_(2)O_(3) resulted in strong.r interface bonding. resulting.in g.eater resistance to interg.anular fracture as well as more balanced stress distributions at different interfaces.

关键词： mechanical properties solid solution MAX phase transmission electron microscopy(TEM) ceramic atomic structure

Carbon-based interface eng.neering.and architecture desig. for hig.-performance lithium metal anodes

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Carbon Energ. 2024年第1期6卷 207-235页

作者： na Zhu Yuxiang.Yang.Yu Li Ying.Bai Junfeng.Rong.Chuan Wu SINOPEC Research Institute of Petroleum Processing.Co. Ltd.BeijingChina Beijing.Key Laboratory of Environmental Science and Eng.neering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina Yang.ze Delta Reg.on Academy of Beijing.Institute of Technolog. JiaxingChina

Metallic lithium(Li)is considered the“Holy g.ail”anode material for the nextg.neration of Li batteries with hig. energ. density owing.to the extraordinary theoretical specific capacity and the lowest neg.tive electrochemical ***,owing.to inhomog.neous Li-ion flux,Li anodes underg. uncontrollable Li deposition,leading.to limited power output and practical *** materials and their composites with controllable structures and properties have received extensive attention to g.ide the homog.neous g.owth of Li to achieve hig.-performance Li *** this review,the correlation between the behavior of Li anode and the properties of carbon materials is ***,we review emerg.ng.strateg.es for rationally desig.ing.hig.-performance Li anodes with carbon materials,including.interface eng.neering.stabilizing.solid electrolyte interphase layer and other functionalized interfacial layer)and architecture desig. of host carbon(constructing.three-dimension structure,preparing.hollow structure,introducing.lithiophilic sites,optimizing.g.ometric effects,and compositing.with Li).Based on the insig.ts,some prospects on critical challeng.s and possible future research directions in this field are *** is anticipated that further innovative works on the fundamental chemistry and theoretical research of Li anodes are needed.

关键词： carbon materials dendrites hosts interfacial layers Li metal anodes

A Joint Estimation Method of SOC and SOH for Lithium-ion Battery Considering.Cyber-Attacks Based on g.-BP

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Computers, Materials & Continua 2024年第9期80卷 4497-4512页

作者： Tianqing.Yuan na Li Hao Sun Sen Tan Key Laboratory of Modern Power System Simulation and Control&Renewable Energ. Technolog. Ministry of EducationNortheast Electric Power UniversityJilin132012China Department of Electrical Eng.neering Northeast Electric Power UniversityJilin132012China Colleg. of Information and Control Eng.neering Jilin Institute of Chemical TechnologyJilin132022China Center for Research on Microg.ids Department of EnergyAalborg UniversityAalborg9220Denmark

To improve the estimation accuracy of state of charg.(SOC)and state of health(SOH)for lithium-ion batteries,in this paper,a joint estimation method of SOC and SOH at charg.ng.cut-off voltag. based on g.netic alg.rithm(g.)combined with back propag.tion(BP)neural network is proposed,the research addresses the issue of data manipulation resulting.***,anomalous data stemming.fromcyber-attacks are identified and eliminated using.the isolated forest alg.rithm,followed by data ***,the incremental capacity(IC)curve is derived fromthe restored data using.theKalman filtering.alg.rithm,with the peak of the ICcurve(ICP)and its corresponding.voltag. serving.as the health factor(HF).Thirdly,the g.-BP neural network is applied to map the relationship between HF,constant current charg.ng.time,and SOH,facilitating.the estimation of SOH based on ***,SOC estimation at the charg.ng.cut-off voltag. is calculated by inputting.the SOH estimation value into the trained model to determine the constant current charg.ng.time,and by updating.the maximum available *** show that the root mean squared error of the joint estimation results does not exceed 1%,which proves that the proposed method can estimate the SOC and SOH accurately and stably even in the presence of false data injection attacks.

关键词： Lithium-ion batteries state of charg. state of health cyber-attacks g.netic alg.rithm back propag.tion neural network