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Spatio-temporal variations in air/ground freezing–thawing indices along the China–Nepal Highway during 1987–2017

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Journal of Mountain Science 2025年第2期22卷 521-536页

作者： ZHANG Tianqi LUO tao ZHANG Chonglei YU Wenbing PEI Wansheng Shaanxi Key Laboratory of Safety and Durability of Concrete Structures Xijing UniversityXi’an 710123China State Key Laboratory of Mountain Hazards and Engineering Resilience Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Institute of Future Civil Engineering Science and Technology Chongqing Jiaotong UniversityChongqing 400074China Key Laboratory of Cryospheric Science and Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

Freezing–thawing indices serve as a comprehensive indicator of both the duration of the freezing/thawing periods and the degree of cold and heat in a given ***-depth analysis of the freezing-thawing indices not only enables the prediction of permafrost distribution and its dynamic changes,but also facilitates the assessment of damage risk to infrastructure under freeze-thaw *** this paper,the air/ground freezing–thawing indices from 1987 to 2017,based on daily temperature observations from meteorological stations along the China–Nepal Highway(CNH),were calculated,and their spatial and temporal variation patterns were *** results showed that:(1)Both mean annual air temperature and mean annual ground surface temperature along the CNH fluctuated upward,with climate tendency rates of 0.43 and 0.52.C·(10a)~(-1),respectively;(2)The number of days with negative air temperature and ground temperature showed fluctuated downward,with change rates of-8.6 and-8.3 d·(10a)~(-1),respectively;(3)The ranges of air freezing index,air thawing index,ground freezing index,and ground thawing index over the years were 157.05-458.88°C·d,2034.20-2560.73°C·d,108.78-396.83°C·d,and 3515.25-4288.67°C·d,*** climate tendency rates were-5.42,10.22,-6.79,and 12.14.C·d·a-1,respectively,showing a general warming trend;(4)The air freezing index,ground freezing index,and ground thawing index changed abruptly in 1999,2000,and 2002,respectively,evincing significant changes after *** research results can provide a basis for the risk assessment of freezing–thawing erosion and the prevention and control of permafrost engineering diseases along the CNH.

关键词： China–Nepal Transportation Corridor China–Nepal Highway Freezing–thawing indices Spatio–temporal change

Distributed fiber optic sensing system for vibration monitoring of 3D printed bridges

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Optoelectronics Letters 2025年第1期21卷 28-34页

作者： ZHAO Shuai ZHOU Ran LUO mingming LIU Jianfei LIU Xiongfei ZHOU tao School of Electronic Information Engineering Hebei University of TechnologyTianjin 300401China Tianjin Key Laboratory of Electronic Materials and devices Tianjin 300401China School of Civil Engineering and Transportation Hebei University of TechnologyTianjin 300401China Tianjin Jinhang Institute of Technical Physics Tianjin 300308China

The fiber optic sensing technology provides data support in structural health monitoring of the macro facilities,including design,construction,and maintenance of bridges,tunnels,ports and other *** this paper,a distributed vibration sensing system is proved to be responsive to a single touch over a 1.8-m-long equivalent fiber segment,covering a vibration frequency from 5 Hz to 25 *** sensing fiber was arranged as an S type layout on the bridge to recognize the standing state,windblown disturbance,and walking ***,the knocking and climbing events are recognized fiber laying spinning lines and hanging on the fences,*** demonstration shows an accurate positioning and sensitive vibration monitoring applied on the automated three-dimensional(3D) printed bridge,which is applicable to all kinds of 3D printed facilities as intelligent sensory neuro-networks.

关键词： fiber bridges spinning

Bioaccessibility and health risk assessment of hydrophobic organic pollutants in soils from four typical industrial contaminated sites in China

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Journal of Environmental Sciences 2025年第1期147卷 282-293页

作者： Shi-Ping Ou Xiao-Liang Liao Zi-tao Huang Yan-Cong Hu Zongwei Cai Zhi-Feng Chen Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China State Key Laboratory of Environmental and Biological Analysis Department of ChemistryHong Kong Baptist UniversityHong Kong 999077China

There have been reports of potential health risks for people from hydrophobic organic pollutants,such as polycyclic aromatic hydrocarbons(PAHs),polychlorinated hydrocarbons(PCHs),and organophosphate flame retardants(OPFRs).When a contaminated site is used for residential housing or public utility and recreation areas,the soil-bound organic pollutantsmight pose a threat to human *** this study,we investigated the contamination profiles and potential risks to human health of 15 PAHs,6 PCHs,and 12 OPFRs in soils from four contaminated sites in *** used an in vitro method to determine the oral bioaccessibility of soil *** PAHswere found at concentrations ranging from26.4 ng/g to 987 ng/***(0.27-14.3 ng/g)and OPFRs(6.30-310 ng/g)were detected,but at low levels compared to earlier *** levels of PAHs,PCHs,and OPFRs released from contaminated soils into simulated gastrointestinal fluids ranged from 1.74%to 91.0%,2.51%to 39.6%,and 1.37%to 96.9%,*** on both spiked and unspiked samples,we found that the oral bioaccessibility of pollutantswas correlated with their logKow andmolecularweight,and the total organic carbon content and pH of *** in 13 out of 38 contaminated soil samples posed potential high risks to *** considering oral bioaccessibility,nine soils still posed potential risks,while the risks in the remaining soils became *** contribution of this paper is that it corrects the health risk of soil-bound organic pollutants by detecting bioaccessibility in actual soils from different contaminated sites.

关键词： Contaminated soil Hydrophobic organic pollutant Polycyclic aromatic hydrocarbon Oral bioaccessibility Risk assessment

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论经济制裁中的央行财产豁免

上海对外经贸大学学报 2025年第1期32卷 62-79页

作者：杜涛胡洋铭华东政法大学国际法学院上海200042

位于外国境内的央行财产在国际法上享有执行豁免权,但近年却成为经济制裁的实施对象。随着对央行财产的制裁越发普遍,执行豁免在经济制裁领域的适用问题也变得愈发突出。尽管《联合国国家及其财产管辖豁免公约》(《公约》)强调执行豁免... 详细信息

位于外国境内的央行财产在国际法上享有执行豁免权,但近年却成为经济制裁的实施对象。随着对央行财产的制裁越发普遍,执行豁免在经济制裁领域的适用问题也变得愈发突出。尽管《联合国国家及其财产管辖豁免公约》(《公约》)强调执行豁免发生于法院诉讼中,但同时对免于执行的“司法措施”进行了扩大解释,这使得执行豁免得以适用于部分具有“准司法性”的制裁措施。我国在解释《外国国家豁免法》中的“司法强制措施”时,应与《公约》保持一致,将执行豁免范围划定为旨在确保法律得以强制执行的一切“司法性行为”,进而为人民币作为国际货币的安全性提供必要法律保障。针对外国对华实施的央行制裁,我国行政部门可以根据《反外国制裁法》和《外国国家豁免法》的规定实施反制裁措施,在反措施规则的法律框架内对等地冻结该国央行位于我国境内的各类财产。为了确保反制裁措施的国际合法性,不得在财产冻结的基础上进一步采取没收措施。

关键词：央行财产执行豁免经济制裁反措施

Spatial transcriptomics combined with single-nucleus RNA sequencing reveals glial cell heterogeneity in the human spinal cord

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Neural Regeneration Research 2025年第11期20卷 3302-3316页

作者： Yali Chen Yiyong Wei Jin Liu tao Zhu Cheng Zhou Donghang Zhang department of Anesthesiology West China HospitalSichuan UniversityChengduSichuan ProvinceChina Laboratory of Anesthesia and Critical Care Medicine National-Local Joint Engineering Research Center of Translational Medicine of AnesthesiologyWest China HospitalSichuan UniversityChengduSichuan ProvinceChina department of Anesthesiology Longgang District Maternity&Child Healthcare Hospital of Shenzhen City(Longgang Maternity and Child Institute of Shantou University Medical College)ShenzhenGuangdong ProvinceChina department of Anesthesiology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Glial cells play crucial roles in regulating physiological and pathological functions,including sensation,the response to infection and acute injury,and chronic neurodegenerative *** cells include astrocytes,microglia,and oligodendrocytes in the central nervous system,and satellite glial cells and Schwann cells in the peripheral nervous *** the greater understanding of glial cell types and functional heterogeneity achieved through single-cell and single-nucleus RNA sequencing in animal models,few studies have investigated the transcriptomic profiles of glial cells in the human spinal ***,we used high-throughput single-nucleus RNA sequencing and spatial transcriptomics to map the cellular and molecular heterogeneity of astrocytes,microglia,and oligodendrocytes in the human spinal *** explore the conservation and divergence across species,we compared these findings with those from *** the human spinal cord,astrocytes,microglia,and oligodendrocytes were each divided into six distinct transcriptomic *** the mouse spinal cord,astrocytes,microglia,and oligodendrocytes were divided into five,four,and five distinct transcriptomic subclusters,*** comparative results revealed substantial heterogeneity in all glial cell types between humans and ***,we detected sex differences in gene expression in human spinal cord glial ***,in all astrocyte subtypes,the levels of NEAT1 and CHI3L1 were higher in males than in females,whereas the levels of CST3 were lower in males than in *** all microglial subtypes,all differentially expressed genes were located on the sex *** addition to sex-specific gene differences,the levels of MT-ND4,MT2A,MT-ATP6,MT-CO3,MT-ND2,MT-ND3,and MT-CO_(2) in all spinal cord oligodendrocyte subtypes were higher in females than in ***,the present dataset extensively characterizes glial cell heterogeneity and offers a valuable resource for explo

关键词： astrocyte glial cell human microglia oligodendrocyte sex differentiation single-nucleus RNA sequencing spatial transcriptomics species variation spinal cord

Distribution and mapping of temperate savanna in the sandy lands of eastern China

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Science China Earth Sciences 2025年第1期68卷 128-141页

作者： Xiaoya LI Feng WANG tao DUAN Kaijie YANG Bin YANG Chunmei WANG Xin TIAN Qi LU Institute of Ecological Conservation and Restoration Institute of Desertification StudiesChinese Academy of ForestryBeijing100091China Institute of desertification Institute of Desertification StudiesChinese Academy of ForestryBeijing100091China Institute of Great Green Wall Bayan Nur015200China Satellite Application Centre for Ecology and Environment MEEBeijing100094China Institute of Microelectronics Chinese Academy of SciencesBeijing100029China Aerospace Information Research Institute Chinese Academy of SciencesBeijing100094China Institute of Forest Resource Information Techniques Chinese Academy of ForestryBeijing100091China

Savannas are distributed globally across various *** perform a significant socioeconomic role in regulating net primary productivity and the terrestrial carbon *** to the high spatial heterogeneity induced by the mixed distribution of trees and grasses,current global land-cover classification maps often classify savannas as forests or grasslands Temperate savannas in China cover a vast area,yet their spatial patterns and extent remain poorly *** study developed a novel remote sensing temperate savannas mapping method by integrating very high-resolution(VHR)unmanned aerial vehicle(UAV)and GF-6 satellite imagery based on the vegetation structure characteristics of temperate savannas using the FAO definition of *** and validation datasets were collected from VHR UAV imagery covering the main temperate savannah types with a ground area of 1818 *** fractional woody vegetation cover(FWVC)and fractional herbaceous vegetation cover(FHVC)in temperate savannas were estimated by integrating Classification and Regression Tree and Random Forest *** current distribution of temperate savannas in the Horqin and Otindag Sandy Lands of Eastern China was mapped to a unit area of 0.5 *** root-mean-square error(RMSE)values for the FWVC and FHVC models were 10.69%and 11.67%,and the R^(2)values were 0.66 and 0.63,*** assessment indicated that the new temperate savanna map had high identification accuracy,with a Kappa coefficient of 0.70,overall accuracy of 0.88,and average accuracy of *** savannas in the sandy lands of eastern China were primarily distributed in the northern Horqin Sandy Land the central and eastern regions of the Otindag Sandy Land,and the transition zone from the southern slopes of the Greater Khingan Mountains to the plains,covering a total area of 3.27×10^(6)*** main savannah types were elm,oak/maple,and shrub *** savannas were widely distributed in the Otindag Sandy Land a

关键词： Temperate savanna UAV imagery GF-6 Fractional woody vegetation cover Fractional herbaceous vegetation cover Machine learning

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Dual-selective silver recovery strategy by simultaneous adsorption-reduction boosted by in-situ magnetic field

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Green Energy & Environment 2025年第2期10卷 433-440页

作者： Jianran Ren Zhiliang Zhu Yanling Qiu Fei Yu tao Zhou Jie Ma Jianfu Zhao Research Center for Environmental Functional Materials State Key Laboratory of Pollution Control and Resource ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai200092China School of Civil Engineering Kashi UniversityKashi844000China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai201306China

The mainstream silver recovery has problems such as resource waste,weak silver selectivity,and complicated ***,self-propelled magnetic enhanced capture hydrogel(magnetic NbFeB/MXene/GO,MNMGH)was prepared by self-crosslinking encapsulation *** achieved high selectivity(K_(d)=23.31 mL/g)in the acidic range,and exhibited ultrahigh silver recovery capacity(1604.8 mg/g),which greatly improved by 66%with the assistance of in-situ magnetic *** recovered silver crystals could be directly physically exfoliated,without acid/base *** selective sieving effect of adsorption,MNMGH preferentially adsorbed Ag(I),and then selectively reduced to Ag(0),realizing dual-selective *** in-situ magnetic field enhanced selective adsorption by enhancing mass transfer,reactivity of oxygen-containing functional ***,density function theory simulations demonstrated that the in-situ magnetic field could lower the silver reduction reaction energy barrier to enhance the selective ***-drive synergy system(reduction drive,adsorption drive and magnetic drive)achieved ultrahigh silver recovery *** study pioneered an in-situ magnetic field assisted enhancement strategy for dual-selective(adsorption/reduction)recovery of precious metal silver,which provided new idea for low-carbon recovery of noble metal from industrial waste liquids.

关键词： In-situ magnetic field Silver recovery Adsorption-reduction Selectivity Physical separation

厄贝沙坦对2型糖尿病肾病微量白蛋白尿治疗的临床观察

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现代医药卫生 2010年第8期26卷 1129-1130页

作者：夏芳马勋龙陶明德绵阳市第三人民医院内分泌科四川绵阳621000

目的:观察厄贝沙坦对2型糖尿病肾病患者尿微量蛋白的作用;方法:64例符合纳入标准患者,随机分为厄贝沙坦治疗组34例,对照组30例,观察时间24周。结果:两组之间血压变化无统计学意义(P=0.276),尿微量白蛋白差异有统计学意义(P<0.05)。结论... 详细信息

目的:观察厄贝沙坦对2型糖尿病肾病患者尿微量蛋白的作用;方法:64例符合纳入标准患者,随机分为厄贝沙坦治疗组34例,对照组30例,观察时间24周。结果:两组之间血压变化无统计学意义(P=0.276),尿微量白蛋白差异有统计学意义(P<0.05)。结论:厄贝沙坦具有独立于降压作用之外的减少糖尿病肾病尿微量白蛋白作用。

关键词：厄贝沙坦糖尿病肾病

Recent advances in semi-heterogenous photocatalysis in organic synthesis

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Chinese Chemical Letters 2025年第2期36卷 94-117页

作者： Jia-Cheng Hou Wei Cai Hong-tao Ji Li-Juan Ou Wei-Min He School of Chemistry and Chemical Engineering University of South China School of Pharmaceutical Sciences Hunan University of Medicine School of Materials Science and Engineering Hunan Institute of Technology

Semi-heterogeneous photocatalysis has emerged as a powerful and productive platform in organic chemistry, which provides mild and eco-friendly conditions for a diverse range of bond-forming *** synergy of homogeneous catalysts and heterogeneous catalysts inherits their main advantages, such as higher activities, easy separation and superior recyclability. In this review, we summarize the recent advances in recyclable semi-heterogenous protocols for the light promoted bond-forming reactions and identify directions for future research according to the different photocatalysts/metal/redox catalysts involved. Notably, this review is not a comprehensive description of reported literature but aim to highlight and illustrate key concepts, strategies, reaction model, reaction conditions and mechanisms.

关键词： Bond-forming Organic synthesis Photocatalysis Recyclable Semi-heterogeneous