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Predicted Climate Change will Increase Landslide Risk in Hanjiang River Basin,China

Journal of Earth Science 2024年第4期35卷 1334-1354页

作者： Xinggang Tang Lingjian wang huiyong wang Yingdan Yuan Dou Huang Jinchi Zhang Co-Innovation Center for Sustainable Forestry in Southern China Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological RestorationNanjing Forestry UniversityNanjing210037China Jiangsu Key Laboratory of Crop Genetics and Physiology College of Horticulture and Plant ProtectionYangzhou UniversityYangzhou225009China College of Forestry Nanjing Forestry UniversityNanjing210037China

Landslides are widespread geomorphological phenomena with complex mechanisms that have caused extensive causalities and property damage *** scale and frequency of landslides are presently increasing owing to the warming effects of climate change,which further increases the associated safety *** this study,the relationship between historical landslides and environmental variables in the Hanjiang River Basin was determined and an optimized model was used to constrain the relative contribution of variables and best spatial response *** optimal MaxEnt model was used to predict the current distribution of landslides and influence of future rainfall changes on the landslide *** results indicate that environmental variables in the study area statistically correlate with landslide events over the past 20 *** MaxEnt model evaluation was applied to landslide hazards in the Hanjiang River Basin based on current climate change *** results indicate that 25.9%of the study area is classified as a high-risk *** main environmental variables that affect the distribution of landslides include altitude,slope,normalized difference vegetation index,annual precipitation,distance from rivers,and distance from roads,with a cumulative contribution rate of approximately 90%.The annual rainfall in the Hanjiang River Basin will continue to increase under future climate warming *** rainfall will further increase the extent of high-and medium-risk areas in the basin,especially when following the RCP8.5 climate prediction,which is expected to increase the high-risk area by 10.7%by ***,high landslide risk areas in the basin will migrate to high-altitude areas in the future,which poses new challenges for the prevention and control of landslide *** study demonstrates the usefulness of the MaxEnt model as a tool for landslide susceptibility prediction in the Hanjiang River Basin caused by global warming and yi

关键词： Hanjiang River Basin climate change environmental factor landslide susceptibility assessment MaxEnt model

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Photo-induced Ag modulating carbon dots:Greatly improved fluorescent properties and derived sensing application

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Chinese Chemical Letters 2024年第1期35卷 338-342页

作者： Yuwei wang Ye Li Guixiang Yang Xiaofeng Yang Chenglu Yan Huaqiao Peng huiyong wang Juan Du Baozhan Zheng Yong Guo Department of Chemistry Sichuan UniversityChengdu 610064China Institute of Quality Standard and Testing Technology for Agro-products Sichuan Academy of Agricultural SciencesChengdu 610066China Key Laboratory of Aviation Fuel&Chemical Airworthiness and Green Development The Second Research Institute of Civil Aviation Administration of ChinaChengdu 610041China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

Carbon dots(CDs)have been attracted much attention and widely studied due to their excellent fluorescence(FL)properties,better biocompatibility and outstanding photo/chemical ***,the disadvantage of lower quantum yield(QY)still limits its wide ***,we reported a novel and convenient strategy to prepare photo-induced Ag/CDs(p-Ag/CDs)by irradiating the mixed Ag+and hydrophobic CDs(h-CDs)acetone solution with ultraviolet(UV)*** obtained p-Ag/CDs exhibit a greatly enhanced FL emission together with a blue shift(460 nm)than h-CDs(520 nm).The QY of p-Ag/CDs is measured to be 51.1%,which is 10.4 times higher than that of h-CDs(4.9%),indicating that photo-induced Ag modulation can effectively improve the optical properties of *** mechanisms for the FL enhancement and blue shift of h-CDs are studied in *** results prove that the greatly enhanced FL emission is from the generated Ag nanoparticles(AgNPs)by UV light irradiation based on metal-enhanced fluorescence(MEF),and the increased oxygen-contained groups in this process lead to the blue shift in CDs ***,the p-Ag/CDs exhibit higher sensitivity and selectivity for sulfide ions(S2-)detection than that of h-CDs,which have a lower response to S2-.This work not only offers a novel strategy to improve the FL properties of materials but also endows them with new functions and broadens their application fields.

关键词： Carbon dots Photo-induced Ag modulating Fluorescent enhancement High quantum yield Derived sensing application Sulfide determination

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离子强度对乳清蛋白-透明质酸乳液凝胶结构和流变性能的影响

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中国乳品工业 2024年第7期52卷 35-41页

作者：王慧勇赵晓青岛酒店管理职业技术学院山东青岛266100 武警工程大学装备管理与保障学院西安710086

文章旨在探究不同浓度Na^(+)、Ca^(2+)对于乳清分离蛋白-透明质酸乳液凝胶结构和流变性能的影响。制备乳清分离蛋白-透明质酸复合物溶液,向其中分别加入不同浓度(25、50、100、200 mmol/L)的NaCl、CaCl2制成乳液凝胶;利用粒径电位、内... 详细信息

文章旨在探究不同浓度Na^(+)、Ca^(2+)对于乳清分离蛋白-透明质酸乳液凝胶结构和流变性能的影响。制备乳清分离蛋白-透明质酸复合物溶液,向其中分别加入不同浓度(25、50、100、200 mmol/L)的NaCl、CaCl2制成乳液凝胶;利用粒径电位、内源荧光测定溶液性质。通过测定乳液凝胶质构、持水性、流变性,激光共聚焦显微镜观察乳液凝胶网络结构。结果表明,加入离子使乳液凝胶具有更好的质构、流变性能、持水性和更均匀更紧凑的网络结构,提高了乳液凝胶稳定性。Na^(+)浓度为50 mmol/L时,溶液电位绝对值最高,凝胶质构、流变性能、持水性较好,此时乳液凝胶有良好的网络结构。Ca^(2+)浓度为50 mmol/L时,乳液凝胶质构性能最好、保水能力最强,有良好的乳液凝胶网络结构。为乳清蛋白基乳液凝胶的凝胶特性调控提供了技术支撑。

关键词：乳清分离蛋白透明质酸离子强度乳液凝胶

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石菖蒲提取物有效成分及对粉尘螨杀灭活性研究

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中国血吸虫病防治杂志 2024年第2期36卷 179-183页

作者：王慧勇汪梅青汤非凡王澜韩忍忍蒋峰湛孝东淮北职业技术学院医学系安徽淮北235000 皖南医学院安徽芜湖241002 安徽省芜湖市螨类检验与防控工程技术研究中心安徽芜湖241002

目的分析石菖蒲提取物对粉尘螨的杀灭活性,并对其有效成分进行分离鉴定。方法以甲醇为溶剂,采用旋蒸法从石菖蒲根茎磨粉中获得冷浸提取物,再以石油醚进行萃取,再次旋蒸获得石菖蒲精油成分。将石菖蒲精油与吐温-80以1∶1比例混匀后用... 详细信息

目的分析石菖蒲提取物对粉尘螨的杀灭活性,并对其有效成分进行分离鉴定。方法以甲醇为溶剂,采用旋蒸法从石菖蒲根茎磨粉中获得冷浸提取物,再以石油醚进行萃取,再次旋蒸获得石菖蒲精油成分。将石菖蒲精油与吐温-80以1∶1比例混匀后用蒸馏水进行倍比稀释至1.000 00%、0.500 00%、0.250 00%、0.125 00%、0.062 50%和0.031 25%等6个浓度,同时将吐温-80用蒸馏水以同样比例稀释作为对照组。取200μL各浓度石菖蒲精油分别均匀滴加于有100只成螨的滤纸上,每一浓度重复实验3次,各浓度石菖蒲精油均设置1个对照组,于25℃,75%相对湿度培养箱内处理24 h后,计算螨虫校正死亡率平均值并进行统计分析。采用硅胶柱层析法分离精油成分,石菖蒲精油经正向柱中压制备,收集其中各个组分。运行条件:流动相为含10%乙酸乙酯的石油醚溶液和纯乙酸乙酯,检测波长为254 nm,色谱柱使用正向硅胶柱,柱温为室温。将分离纯化得到的石菖蒲精油各组分均稀释至1.000 00%浓度进行杀螨活性测定,舍弃杀螨活性低于100%的组分后,将保留组分稀释至上轮50%浓度后再进行多轮杀螨活性测定。将有杀螨效果的组分采用高效液相色谱、液相色谱-质谱联用仪和超导脉冲傅里叶变换核磁共振波谱仪进行质谱和核磁分析,通过计算机标准谱图库检索并与文献资料比较,确定活性单体化合物结构。结果 1.000 00%、0.500 00%、0.250 00%和0.125 00%浓度石菖蒲精油可将实验粉尘螨全部杀灭,校正死亡率均为100%。石菖蒲提取物有效浓度为0.062 50%时对粉尘螨的24 h致死率可达94.33%。采用硅胶柱层析法对其进行分离纯化,分离出A~F等6个组分,对分离出的不同成分进行杀螨活性对比,发现D、E组分杀螨效果良好,在0.500 00%浓度下均达到100%的杀螨率。质谱和核磁分析结果显示,D组分为异丁香酚甲醚、E组分为β-细辛脑。结论石菖蒲精油提取物具有杀螨活性,其中异丁香酚甲醚对粉尘螨有显著杀灭活性。

关键词：粉尘螨石菖蒲杀螨活性异丁香酚甲醚

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河南省鄢陵县2013—2022年肺结核流行病学特征分析

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安徽预防医学杂志 2024年第4期30卷 321-324页

作者：李世华王会永鄢陵县疾病预防控制中心河南许昌461200

目的分析2013—2022年河南省鄢陵县肺结核流行病学特征,为结核病防控工作提供依据。方法收集2013—2022年鄢陵县肺结核病例资料,描述其三间分布,采用SPSS 22.0进行统计分析。结果2013—2022年鄢陵县共报告肺结核病例2622例,年均报告发... 详细信息

目的分析2013—2022年河南省鄢陵县肺结核流行病学特征,为结核病防控工作提供依据。方法收集2013—2022年鄢陵县肺结核病例资料,描述其三间分布,采用SPSS 22.0进行统计分析。结果2013—2022年鄢陵县共报告肺结核病例2622例,年均报告发病率为47.28/10万,呈逐年下降趋势(χ^(2)_(趋势)=292.266,P<0.001)。75岁及以上人群组报告发病率最高(131.47/10万);男性报告发病率高于女性(χ^(2)=343.232,P<0.001);肺结核病例中职业以农民为主(占93.55%),学生次之(占2.17%);患者来源以转诊(1136例,占43.33%)为主。结论鄢陵县肺结核疫情呈逐年下降趋势,应加强重点人群的筛查防治工作。

关键词：肺结核流行病学特征

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Hydrogen bonding mediated ion pairs of some aprotic ionic liquids and their structural transition in aqueous solution

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Science China Chemistry 2017年第7期60卷 970-978页

作者： huiyong wang Miao Liu Yuling Zhao Xiaopeng Xuan Yang Zhao Jianji wang Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals School of Chemistry and Chemical EngineeringKey Laboratory of Green Chemical Media and ReactionsMinistry qf EdueationHenan Normal UniversityXinxiang 453007China

Ion pair speciation of ionic liquids(ILs) has an important effect on the physical and chemical properties of ILs and recognition of the structure of ion pairs in solution is essential. It has been reported that ion pairs of some ILs can be formed by hydrogen bonding interactions between cations and anions of them. Considering the fact that far-IR(FIR) spectroscopy is a powerful tool in indicating the intermolecular and intramolecular hydrogen bonding, in this work, this spectroscopic technique has been combined with molecular dynamic(MD) simulation and nuclear magnetic resonance hydrogen spectroscopy(~1H NMR) to investigate ion pairs of aprotic ILs [Bmim][NO_3], [BuPy][NO_3], [Pyr_(14)][NO_3], [PP_(14)][NO_3] and [Bu-choline][NO_3] in aqueous IL mixtures. The FIR spectra have been assigned with the aid of density functional theory(DFT) calculations, and the results are used to understand the effect of cationic nature on the structure of ion pairs. It is found that contact ion pairs formed in the neat aprotic ILs by hydrogen bonding interactions between cation and anion, were still maintained in aqueous solutions up to high water mole fraction(say 0.80 for [BuPy][NO3]). When water content was increased to a critical mole fraction of water(say 0.83 for [BuPy][NO3]), the contact ion pairs could be transformed into solvent-separated ion pairs due to the formation of the hydrogen bonding between ions and water. With the further dilution of the aqueous ILs solution, the solvent-separated ion pairs was finally turned into free cations and free anions(fully hydrated cations or anions). The concentrations of the ILs at which the contact ion pairs were transformed into solvent-separated ion pairs and solvent-separated ion pairs were transformed into free ions(fully hydrated ion) were dependent on the cationic structures. These information provides direct spectral evidence for ion pair structures of the aprotic ILs in aqueous solution. MD simulation and ~1H NMR results support

关键词： ionic liquids ion pair hydrogen bonding far infrared spectroscopy solution

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Selective separation of protein and saccharides by ionic liquids aqueous two-phase systems

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Science China Chemistry 2010年第7期53卷 1554-1560页

作者： PEI YuanChao LI ZhiYong LIU Li wang JianJi wang huiyong Key Laboratory of Green Chemical Media and Reactions Ministry of EducationSchool of Chemistry and Environmental ScienceHenan Normal UniversityXinxiang 453007China

In the present work,it was found that aqueous solution of a hydrophilic ionic liquid (IL),1-butyl-3-methylimidazolium dicyanamide ([C4mim][N(CN)2]),could be separated into an aqueous two-phase system (ATPS) by inorganic salts such as K2HPO4 and *** top phase is IL-rich,while the bottom phase is *** was shown that 82.7%-100% bovine serum albumin (BSA) could be enriched into the top phase and almost quantitative saccharides (arabinose,glucose,sucrose,raffinose or dextran) were preferentially extracted into the bottom phase in a single-step extraction by [C4mim][N(CN)2] + K2HPO4 *** extraction efficiency of BSA from the aqueous saccharide solutions was influenced by the molecular structure of *** conductivity,dynamic light scattering (DLS) and transmission electron microscopy (TEM) were combined to investigate the microstructure of the IL-rich top phase and the possible mechanism for the selective *** is suggested that the formation of the IL aggregate and the IL aggregate-BSA complex plays a significant role in the separation of BSA from aqueous saccharide *** is the first example for the selective separation by ILs-based *** is expected that these findings would have potential applications in bio-analysis,separation,and IL recycle.

关键词： selective separation bovine serum albumin saccharide ionic liquid aqueous two-phase system

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Pheromone 3kPZS evokes context-dependent serotonin sexual dimorphism in the brain of the sea lamprey (Petromyzon marinus)

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Integrative Zoology 2015年第1期10卷 91-101页

作者： Yuwen CHUNG-DAVIDSON huiyong wang Anne MSCOTT Weiming LI Department of Fisheries and Wildlife Michigan State UniversityEast LansingMIUSA

Mature male sea lampreys(Petromyzon marinus)release a sex pheromone,3-keto-petromyzonol sulfate(3kPZS),that induces sexually dimorphic behavioral responses in ***,the neural mechanism of such responses is mostly *** examined the neurotransmitter serotonin(5-hydroxytryptamine,5-HT)and the expression of 5-HT1A receptors in the forebrain and brainstem of sea lamprey exposed to the vehicle(0.91 ppm methanol)or 10−10 M 3kPZS for 2 h using high performance liquid chromatography-electrospray ionization tandem mass spectrometry,immunohistochemistry and real-time quantitative polymerase chain *** to 3kPZS for 2 h increased 5-HT concentration in the forebrain of adult females,whereas 5-HT was not detected in the forebrain of adult *** the contrary,3kPZS exposure decreased 5-HT concentration in the brainstem of adult females and had no effect in adult *** exposure evoked context-dependent sexual dimorphism in brain 5-HT1A receptor immunoreactivity,but had no effect on 5-HT1A mRNA concentrations in the brain with 2 h exposure *** appears that in sea lamprey pheromone 3kPZS affects the 5-HT system in the brain in a context-dependent,sexually dimorphic manner.

关键词： 5-HT1A receptor liquid chromatography-electrospray ionization tandem mass spectrometry motor output real-time quantitative polymerase chain reaction

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“双碳”战略下上党区铁路专用线煤炭运量研究

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铁道货运 2024年第6期42卷 68-74页

作者：王慧勇赵思萌吴迪中铁第六勘察设计院集团有限公司铁道工程设计研究院天津300308

随着“双碳”战略的实施,运输结构加速调整。长治市上党区新建煤炭铁路专用线,推进区域煤炭运输“公转铁”,实现运输领域低碳发展。为合理确定铁路专用线承担的煤炭运量,以产销平衡法为基础,分析上党区煤炭资源储量、分布和规划情况,重... 详细信息

随着“双碳”战略的实施,运输结构加速调整。长治市上党区新建煤炭铁路专用线,推进区域煤炭运输“公转铁”,实现运输领域低碳发展。为合理确定铁路专用线承担的煤炭运量,以产销平衡法为基础,分析上党区煤炭资源储量、分布和规划情况,重点研究煤炭运输市场、外运通道径路比选、运费运价、线路能力利用率,结合运输结构调整政策、煤炭外运通路功能和铁路专用线合理吸引范围,选择最优运输径路,综合分析确定了铁路专用线承担的煤炭运量,为铁路专用线可行性研究提供依据。

关键词： “双碳”战略公转铁铁路专用线煤炭运输运量预测

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Blockchain-Based Data Acquisition with Privacy Protection in UAV Cluster Network

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 879-902页

作者： Lemei Da Hai Liang Yong Ding Yujue wang Changsong Yang huiyong wang Guangxi Key Laboratory of Cryptography and Information Security School of Computer Science and Information SecurityGuilin University of Electronic TechnologyGuilin541004China Cyberspace Security Research Center Pengcheng LaboratoryShenzhen518055China School of Mathematics and Computing Science Guilin University of Electronic TechnologyGuilin541004China

The unmanned aerial vehicle(UAV)self-organizing network is composed of multiple UAVs with autonomous capabilities according to a certain structure and scale,which can quickly and accurately complete complex tasks such as path planning,situational awareness,and information *** to the openness of the network,the UAV cluster is more vulnerable to passive eavesdropping,active interference,and other attacks,which makes the system face serious security *** paper proposes a Blockchain-Based Data Acquisition(BDA)scheme with privacy protection to address the data privacy and identity authentication problems in the UAV-assisted data acquisition *** UAV cluster has an aggregate unmanned aerial vehicle(AGV)that can batch-verify the acquisition reports within its administrative *** successful verification,AGV adds its signcrypted ciphertext to the aggregation and uploads it to the blockchain for *** are two chains in the blockchain that store the public key information of registered entities and the aggregated reports,*** security analysis shows that theBDAconstruction can protect the privacy and authenticity of acquisition data,and effectively resist a malicious key generation center and the public-key substitution *** also provides unforgeability to acquisition reports under the Elliptic Curve Discrete Logarithm Problem(ECDLP)*** performance analysis demonstrates that compared with other schemes,the proposed BDA construction has lower computational complexity and is more suitable for the UAV cluster network with limited computing power and storage capacity.

关键词： Unmanned aerial vehicle cluster network certificateless signcryption certificateless signature batch verification source authentication data privacy blockchain

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