检索结果-南通市图书馆

Thermal transports in the MXenes family:Opportunities and challenges

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第8期17卷 7700-7716页

作者： Yurui Liu Yue wu Xinwei Wang Department of Chemical and Biological Engineering Iowa State University618 Bissell AmesIA 50011USA Department of Mechanical Engineering 271 Applied Science Complex II1915 Scholl RoadIowa State UniversityAmesIA 50011USA

The carbides and nitrides of transition metals known as“MXenes”refer to a fast-growing family of two-dimensional materials discovered in *** to their unique nanolayer structure,superior electrical,mechanical,and thermal properties,MXenes have shown great potential in addressing the critical overheating issues that jeopardize the performance,stability,and lifetime of high-energy-density components in modern devices such as microprocessors,integrated circuits,and capacitors,*** outstanding intrinsic thermal conductivity of MXenes has been proved by experimental and theoretical *** MXenes-enabled high thermal conductivity composites incorporated with polymer matrix have also been reported and widely used as thermal management *** the booming heat dissipation demands,MXenes-enabled thermal management material is an extremely valuable and scalable option for modern electronics ***,the fundamental thermal transport mechanisms behind the MXenes family remain *** MXene thermal conductivity disparities between the theoretical prediction and experimental results are still *** better understand the thermal conduction in MXenes and provide more insights for engineering high-performance MXene thermal management materials,in this article,we summarize recent progress on thermal conductive *** essential factors that affect MXenes intrinsic thermal conductivities are tackled,selected MXenes-polymer composites are highlighted,and prospects and challenges are also discussed.

关键词： transition metal carbide(MXene) thermal transport two-dimensional materials thermally conductive composites

Sensitivity analysis of modeling parameters to soot and PAHs prediction in ethylene inverse diffusion flame

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第2期67卷 486-498页

作者： wu BingKun LI TianJiao LIU Dong MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and Technology Nanjing 210094China

The soot formation model based on inverse ethylene diffusion flames was performed to study the sensitivity of the soot formation process to the prediction *** effects of efficiency parameters such as soot inception,surface growth and coagulation on the simulation results were studied by using the adjustable efficiency *** addition,the reversible soot model and conjugate heat transfer(CHT)model were also introduced to explore their *** indicated that,among adjustable efficiency parameters,the nucleation efficiency had the greatest influence on the predicted soot and PAHs distributions,while the Habstraction-C2H2-addition(HACA)process and PAH adsorption surface growth efficiencies impacted *** adjustable efficiency parameters had a significant effect on the concentration of soot gaseous precursors and soot particles,but their effects on temperature,gas phase molecules,and intermediate species were not *** the nucleation efficiency increased from 2×10^(-6)to 1×10^(-4),the predicted value of the integrated soot was increased by nearly 50%,and the maximum primary particle number density and the number of aggregates were increased by an order of *** maximum concentration of BAPYR was ***,the peak temperature along the axial direction increased by only 3.5 *** the reversible soot model,the approximation results of the adjustable efficiency parameters could be modified,which showed the feasibility of the *** use of the CHT model promoted pyrolysis of the fuel below the outlet of the fuel tube,with high-temperature zones,soot zones,and PAHs zones moving towards higher flame ***,when using the reversible model and the CHT model,the maximum soot volume fraction decreased by 39%compared with the basic efficiency parameters,while the concentration of BAPYR increased by 162%,and the concentrations of gas phase species were decreased.

关键词： inverse diffusion flames soot formation soot model ethylene

Extending the detection limit:innovations in infrared quantum dot photodetectors reaching up to 18μm

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第8期13卷 1445-1447页

作者： Chong wu Wang Qi Jie Wang Centre for OptoElectronics and Biophotonics School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore Centre for Disruptive Photonic Technologies School of Physical and Mathematical SciencesNanyang Technological UniversitySingaporeSingapore

A regrowth method was used to synthesize large-sized colloidal quantum dots(CQDs).With the assistance of doping engineering,the synthesized CQD detectors demonstrate exceptional long-wavelength infrared detection performance,reaching up to 18μm,significantly extending the spectral response limit for CQD-based infrared *** detectors also achieve a reasonably high detectivity of 6.6×10^(8)Jones.

关键词： limit quantum sized

Strong Limit Theorems for Weighted Sums under the Sub-linear Expectations

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2024年第3期40卷 862-874页

作者： Feng-xiang FENG Ding-cheng WANG Qun-ying wu Hai-wu HUANG School of Mathematics and Statistics Guilin University of TechnologyGuilin 541004China School of Mathematical Science University of Electronic Science and Technology of ChinaChengdu 611731China School of Science Guilin University of Aerospace TechnologyGuilin 541004China

In this article,we study strong limit theorems for weighted sums of extended negatively dependent random variables under the sub-linear *** establish general strong law and complete convergence theorems for weighted sums of extended negatively dependent random variables under the sub-linear *** results of strong limit theorems are more general than some related results previously obtained by Thrum(1987),Li et al.(1995)and wu(2010)in classical probability space.

关键词： sub-linear expectation complete convergence complete moment convergence the maximal weighted sums

A New Species of the Genus Scincella Mittleman,1950(Squamata:Scincidae)from Sichuan Province,Southwest China

在线全文

学校读者我要写书评

暂无评论

Asian Herpetological Research 2024年第2期15卷 115-129页

作者： Ruwan JIA Zongyuan GAO Dihao wu Jinlong REN Dechun JIANG Wei wu CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization&Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610213SichuanChina University of Chinese Academy of Sciences Beijing 100049China

The genus Scincella Mittleman,1950,within the family Scincidae,is a diverse group comprising 39 described *** taxonomy of the genus is complex due to morphological similarities among species,which often obscures the true extent of biodiversity,resulting in several undescribed species requiring further *** China,particularly within the unique ecosystems of the Hengduan Mountains,the diversity of Scincella is notably underestimated,with only 12 species currently *** the present study,we describe a new species of the genus Scincella,Scincella liangshanensis ***.,from Sichuan Province,Southwest *** characteristics and phylogenetic analyses revealed that the putative new species is distinct from all other known *** discovery not only expands the known diversity of Scincella but also emphasizes the inadequacies in our current understanding of herpetological diversity in *** addition of this species to the scientific record highlights the necessity for ongoing biodiversity assessments to uncover hidden species and enhance our understanding of the intricate web of life in one of the world’s biodiversity hotspots.

关键词： morphology phylogeny Scincella liangshanensis sp.nov. taxonomy the Hengduan Mountains

Paclitaxel-lipid prodrug liposomes for improved drug delivery and breast carcinoma therapy

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第2期35卷 335-340页

作者： Xin wu Xinmei Chen Xinyu Wang Haisheng He Jianming Chen Wei wu Key Laboratory of Smart Drug Delivery of MOE School of PharmacyFudan UniversityShanghai 201203China Department of Pharmacy Fujian University of Traditional Chinese MedicineFuzhou 350122China Shanghai Wei Er Lab Shanghai 201707China Shanghai Skin Disease Hospital Tongji University School of MedicineShanghai 200443China

Paclitaxel(PTX)is widely applied for the treatment of unresectable and metastasis breast carcinoma as well as other cancers,whereas its efficacy is always impeded by poor *** are one kind of the most successful drug carriers which are capable of solubilizing PTX and improving patients’tolerance owing to excellent biocompatibility and ***,poor compatibility between PTX and liposomes compromises the stability,drug loading and anti-tumor capacity of liposomal *** address this issue,three lipids with various chain lengths,namely,myristic acid(MA,14C),palmitic acid(PA,16C)and stearic acid(SA,18C),were conjugated to PTX via ester bonds and the synthesized prodrugs with high lipophilicity were further formulated into liposomes,*** liposomes show high stability and drug loadings,as well as sustained drug *** chain lengths of lipids are negatively correlated with drug release and enzymatic conversion rates,which further impact the pharmacokinetics,tumor accumulation,and anti-tumor efficacy of liposomal *** rapid nor slow drug release facilitates high tumor accumulation as well as anti-tumor efficacy of *** all liposomes,PTX-PA-loaded liposomes show the longest circulation and highest tumor accumulation of PTX and exert the most potent anti-tumor capacities in vivo,owing to its moderate drug release and enzymatic conversion *** its superior safety,PTX-PA liposomes hold potential for further clinical translation.

关键词： Paclitaxel Lipids Prodrugs Liposomes Drug release Chemotherapy

Study on the effective elastic performance of composites containing decagonal symmetric two-dimensional quasicrystal coatings

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1655-1664页

作者： Yurun wu Lu LI Lianhe LI School of Mathematics and Science Inner Mongolia Normal UniversityHohhot 010022China Inner Mongolia Applied mathematics Center Hohhot 010022China Key Laboratory of Infinite Dimensional Hamiltonian System and Its Algorithm Application Ministry of EducationHohhot 010022China

On account of the Mori-Tanaka approach,the effective elastic performance of composites containing decagonal symmetric two-dimensional(2D)quasicrystal(QC)coatings is *** expressions for the effective elastic constants of rare-earth QC reinforced magnesium-based composites are *** discussion is presented on the effects of the volume fraction of the inclusions,the aspect ratio of the inclusions,the coating thickness,and the coating material parameters on the effective elastic constants of the *** results indicate that considering the coating increases the effective elastic constants of the composites to some extent.

关键词： Mori-Tanaka approach coated inclusion decagonal symmetric twodimensional(2D)quasicrystal(QC)

胰十二指肠切除术后患者乳糜瘘的危险因素及干预

在线全文

学校读者我要写书评

暂无评论

中华肝胆外科杂志 2016年第5期22卷 325-328页

作者：吴应盛陈必成李建辉张珉郑树森浙江大学医学院附属第一医院肝胆胰外科杭州310003 浙江大学医学院附属第一医院缙云分院普外科缙云321400

目的探讨胰十二指肠切除术后发生乳糜瘘的危险因素及其防治措施。方法收集浙江大学医学院附属第一医院2012年6月至2014年6月230例胰十二指肠切除术患者的临床资料。统计术后发生乳糜瘘患者数量，并按1：2随机配对选取对照组病例，比较... 详细信息

目的探讨胰十二指肠切除术后发生乳糜瘘的危险因素及其防治措施。方法收集浙江大学医学院附属第一医院2012年6月至2014年6月230例胰十二指肠切除术患者的临床资料。统计术后发生乳糜瘘患者数量，并按1：2随机配对选取对照组病例，比较乳糜瘘与非乳糜瘘患者的肿瘤大小、血管侵犯、淋巴结清扫范围等指标，运用Logistic回归分析独立危险因素。结果230例患者中有15例（6．5％）发生术后乳糜瘘。病例组和对照组平均术后住院时间分别为（20．8±7．3）d和（13．5±2．3）d（P=0．004）。乳糜瘘组行14组和16组淋巴结清扫的患者数量明显多于对照组（80％比36．7％，P=0．006）。单因素及多因素分析表明，行14组和16组淋巴结清扫为术后发生乳糜瘘的独立危险因素（P〈0．050，OR=6．909，95％CI 1．593～29．958）。结论乳糜瘘可延长胰十二指肠切除术后患者住院时间，行14组及16组淋巴结清扫可显著增加术后乳糜瘘的风险。仔细结扎胃结肠静脉干旁淋巴管、精细处理14组和16组淋巴结清扫是有效防治干预措施。

关键词：胰十二指肠切除术乳糜瘘淋巴清扫完全胃肠外营养

Quantifying the 2022 drought and spatiotemporal evolution of TWSA in the Dongting Lake Basin over the past two decades

在线全文

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2024年第5期15卷 516-527页

作者： Guodong Xu Sulan Liu Siyu Cheng Yu Zhang Xiaohui wu Yunlong wu Institute of Seismology China Earthquake AdministrationWuhan 430071China School of Geography and Information Engineering China University of GeosciencesWuhan 430074China

Extreme hydrological events such as droughts and floods have been increasingly influenced by abnormal atmospheric disturbances caused by human activity and global *** Dongting Lake Basin(DLB)has experienced challenging circumstances over the past 20 years due to complex climatic variations,leading to extreme flooding and *** study aims to investigate the spatiotemporal variation in terrestrial water storage anomalies(TWSA)over the DLB using data from the GRACE/GRACE-FO and GLDAS spanning the latest two decades.A significant decline trend in TWSA is unveiled from July 2019 to May 2023,with the rate of change determined as-1.94 cm/year and-1.99 cm/year based on the GRACE/GRACE-FO and GLDAS,*** GRACE-Drought Severity Index(DSI)is employed to identify and evaluate the severity and spatiotemporal evolution of the 2022 drought event in the *** results accurately capture the drought event,which began in July 2022 and continued until March 2023,with the most severe conditions occurring in October 2022,when the GRACE-DSI value stood at-2.06 and the TWSA decreased by 15.24 cm and 33.51 cm relative to the same month in 2021 and 2020,***,the daily water level variation at the Chenglingji hydrological gauging station in 2022 broke previous records,reaching a minimum of only 19 *** the 2022 drought event with the drought events in 2006 and 2011,the impact of drought on vegetation growth conditions was relatively small,but there was still significant vegetation degradation across the DLB.

关键词： Dongting Lake drought Terrestrial water storage GRACE-DSI NDVI GRACE