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A direct polymeric carbon nitride/tungsten oxide Z-scheme heterostructure for efficient photocatalytic hydrogen generation via reforming of plastics into value-added chemicals

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Rare Metals 2024年第8期43卷 3771-3783页

作者： rui-Zhe Wang Zhi Lin Yi-qing Wang Kai-Ni Zhang Ge-Hong Zhang Jie Zhang Samuel S.Mao Shao-Hua Shen International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an 710049China School of Civil and Architecture Engineering Xi'an Technological UniversityXi'an 710021China Department of Mechanical Engineering University of California at BerkeleyBerkeleyCA94720USA

To promote charge transfer and separation for efficient photocatalysis,a direct Z-scheme heterostructure was constructed by coupling polymeric carbon nitride(PCN) and WO_(3).Interestingly,the obtained PCN/WO_(3)Z-scheme heterostructure could photocataly tic ally produce hydrogen and value-added chemicals(e.g.,formate and acetate) by reforming of plastic polylactic acid(PLA) in alkaline aqueous *** optimizing WO_(3) contents and reaction conditions,the obtained PCN/WO_(3)heterostructure exhibits much increased photocatalytic activity for PLA photoreforming under visible light,with hydrogen evolution rate reaching 402.90 μmol·g~(-1)·h~(-1),which is 3.5 times that of *** is revealed that the Z-scheme charge transfer between PCN and WO_(3) mainly contributes to the promoted charge separation and thus the improved photocatalytic ***,with h+and·OH experimentally evidenced as the predominant active species,a possible reaction pathway for the reforming of PLA into value-added chemicals(e.g.,formate and acetate)over PCN/WO_(3) Z-scheme heterostructure is cleared by monitoring the reaction intermediates and *** work paves a carbon neutrality and scalable route toward the synergistical production of hydrogen and value-added chemicals by utilizing and recycling plastic waste.

关键词： Carbon nitride Z-scheme heterojunction Plastic waste conversion Photocatalytic H_(2)production Value-added chemicals

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基于PCA与EM算法的多光谱遥感影像变化检测研究

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计算机科学 2010年第3期37卷 282-284,296页

作者：吴柯牛瑞卿王毅杜博中国地质大学地球物理与空间信息学院武汉430074 武汉大学测绘遥感信息工程国家重点实验室武汉430079

变化检测技术能够从观测数据中有效地提取各种变化信息。以多时相的多光谱遥感影像作为主要研究对象,就基于直接比较像元特征的变化检测中两方面的关键问题——差异影像的构造和变化阈值的提取来开展研究,具体采用PCA结合差值比较的方... 详细信息

变化检测技术能够从观测数据中有效地提取各种变化信息。以多时相的多光谱遥感影像作为主要研究对象,就基于直接比较像元特征的变化检测中两方面的关键问题——差异影像的构造和变化阈值的提取来开展研究,具体采用PCA结合差值比较的方法构造差异影像,采用EM自动确定变化阈值以提取变化区域。通过与传统变化检测方法的实验比较,证明了该方法的有效性。

关键词：变化检测主成分变换 EM 多光谱遥感影像

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库水位响应滞后影响下的滑坡位移预测模型研究

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安全与环境工程 2013年第1期20卷 26-29,35页

作者：石爱红牛瑞卿中国地质大学地球物理与空间信息学院武汉430074

滑坡的位移变化不仅与其地质环境有关,还取决于外界诱发因素的动态变化,如降雨和库水位变化。本文以白家包滑坡监测数据为依据,对滑坡诱发因素与滑坡位移变化之间的影响关系进行了综合分析,并选取月降雨量与库水响应滞后影响下的库水位... 详细信息

滑坡的位移变化不仅与其地质环境有关,还取决于外界诱发因素的动态变化,如降雨和库水位变化。本文以白家包滑坡监测数据为依据,对滑坡诱发因素与滑坡位移变化之间的影响关系进行了综合分析,并选取月降雨量与库水响应滞后影响下的库水位月平均变化量为诱发因子,采用时间序列分析方法,通过构建差分自回归移动平均(ARIMA)模型,对该滑坡的位移进行了动态预测。结果表明:该模型可以较好地反映滑坡位移在外界诱发因素影响下的动态变化,可有效提高模型预测精度,且简单易行,为判断滑坡的动态变化提供了可靠的理论依据。

关键词：滑坡位移预测库水位滞后性时间序列分析 ARIMA模型

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木鱼包滑坡形变特征的InSAR监测分析

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长江科学院院报 2022年第4期39卷 77-84页

作者：王尚晓李士垚牛瑞卿中国地质调查局南京地质调查中心南京210016 中国地质大学地球物理与空间信息学院武汉430074

三峡库区地质条件复杂,问题库岸斜坡众多,滑坡灾害问题一直十分突出,需要对三峡库区的灾害隐患进行日常监测。然而常规的监测手段往往需要耗费大量的人力物力,监测效果也容易受到外界条件的限制。以三峡巴东县城长江沿岸为研究区,基于AL... 详细信息

三峡库区地质条件复杂,问题库岸斜坡众多,滑坡灾害问题一直十分突出,需要对三峡库区的灾害隐患进行日常监测。然而常规的监测手段往往需要耗费大量的人力物力,监测效果也容易受到外界条件的限制。以三峡巴东县城长江沿岸为研究区,基于ALOS-2数据,使用PS InSAR(永久散射体干涉测量)处理技术对2016年8月—2017年10月共22景ALOS-2数据进行处理,结合水文、地质和实地调查资料对木鱼包滑坡的滑动速率和规模等变形特征做了分析。结果表明:木鱼包滑坡在监测周期内处于缓慢的蠕动变形阶段,平均形变速率为10.4 mm/a,形变的主要影响因素是库水位的变化。

关键词：滑坡时序InSAR 形变监测 ALOS-2数据三峡库区

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TRAIL and Celastrol Combinational Treatment Suppresses Proliferation, Migration, and Invasion of Human Glioblastoma Cells via Targeting Wnt/β-catenin Signaling Pathway

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Chinese Journal of Integrative Medicine 2024年第4期30卷 322-329页

作者： QIN Jing-jing niu Meng-da CHA Zhe GENG qing-hua LI Yu-lin REN Chun-guang David P.Molloy YU Hua-rong Research Center of Neuroscience School of Basic Medical SciencesChongqing Medical UniversityChongqing(400016)China Laboratory of Developmental Biology Department of Cell Biology and GeneticsSchool of Basic Medical SciencesChongqing Medical UniversityChongqing(400016)China Department of Biochemistry and Molecular Biology School of Basic Medical SciencesChongqing Medical UniversityChongqing(400016)China

Objective To investigate the mechanistic basis for the anti-proliferation and anti-invasion effect of tumor necrosis factor-related apoptosis-induced ligand(TRAIL)and celastrol combination treatment(TCCT)in glioblastoma *** Cell counting kit-8 was used to detect the effects of different concentrations of celastrol(0-16µmol/L)and TRAIL(0-500 ng/mL)on the cell viability of glioblastoma cells.U87 cells were randomly divided into 4 groups,namely control,TRAIL(TRAIL 100 ng/mL),Cel(celastrol 0.5µmol/L)and TCCT(TRAIL 100 ng/mL+celastrol 0.5µmol/L).Cell proliferation,migration,and invasion were detected by colony formation,wound healing,and Transwell assays,*** reverse transcription polymerase chain reaction and Western blotting were performed to assess the levels of epithelial-mesenchymal transition(EMT)markers(zona occludens,N-cadherin,vimentin,zinc finger E-box-binding homeobox,Slug,and β-catenin).Wnt pathway was activated by lithium chloride(LiCl,20 mol/L)and the mechanism for action of TCCT was *** Celastrol and TRAIL synergistically inhibited the proliferation,migration,invasion,and EMT of U87 cells(P<0.01).TCCT up-regulated the expression of GSK-3β and down-regulated the expression of β-catenin and its associated proteins(P<0.05 or P<0.01),including c-Myc,Cyclin-D1,and matrix metalloproteinase(MMP)-*** addition,LiCl,an activator of the Wnt signaling pathway,restored the inhibitory effects of TCCT on the expression of β-catenin and its downstream genes,as well as the migration and invasion of glioblastoma cells(P<0.05 or P<0.01).Conclusions Celastrol and TRAIL can synergistically suppress glioblastoma cell migration,invasion,and EMT,potentially through inhibition of Wnt/β-catenin *** underlies a novel mechanism of action for TCCT as an effective therapy for glioblastoma.

关键词： celastrol Chinese medicine tumor necrosis factor-related apoptosis-induced ligand glioblastoma β-catenin Tripterygium wilfordii

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基于多源数据三维可视化集成的高切坡解译

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吉林大学学报（地球科学版） 2012年第1期42卷 161-168,176页

作者：叶润青牛瑞卿邓清禄张良培赵艳南吴婷江齐英中国地质大学地球物理与空间信息学院武汉430074 中国地质大学工程学院武汉430074 武汉大学测绘遥感信息工程国家重点实验室武汉430079

三峡库区移民迁建工程涉及20个区(县),在城镇和公路等基础设施建设中,人工开挖而形成了大量的高切坡,其中约90%处于不稳定状态,严重威胁着库区人民生命财产安全。选择库区长江干流具有代表性的秭归-巴东库段作为研究区,采取遥感、地理... 详细信息

三峡库区移民迁建工程涉及20个区(县),在城镇和公路等基础设施建设中,人工开挖而形成了大量的高切坡,其中约90%处于不稳定状态,严重威胁着库区人民生命财产安全。选择库区长江干流具有代表性的秭归-巴东库段作为研究区,采取遥感、地理信息、地质图等多源数据融合及三维可视化技术,解译了高切坡177处(总长度25.165km),提取了高切坡的位置、规模、地层、坡度、斜坡结构、工程防护措施和危害对象等信息,并分析了高切坡与地层、岩性、坡度和斜坡结构的关系。研究表明:①高切坡主要分布于城镇区及公路内侧;②碳酸盐岩、结晶岩和碎屑岩3种工程岩组中高切坡的稳定性依次降低;③香溪-泄滩亚段碎屑岩地区高切坡稳定性差,应重点防治。

关键词：多源数据三维可视化高切坡解译三峡库区地理信息系统

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Concurrent hetero-/homo-geneous electrocatalysts to bi-phasically mediate sulfur species for lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第6期93卷 663-668,I0016页

作者： rui-Bo LingHu Jin-Xiu Chen Jin-Hao Zhang Bo-Quan Li qing-Shan Fu Gulnur Kalimuldina Geng-Zhi Sun Yunhu Han Long Kong Xi’an Institute of Flexible Electronics(IFE) Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina Institute of Advanced Materials Nanjing Tech UniversityNanjing 211816JiangsuChina Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Department of Mechanical and Aerospace Engineering School of Engineering and Digital SciencesNazarbayev UniversityKabanbay Batyr Ave.53Astana 010000Kazakhstan

Expediting redox kinetics of sulfur species on conductive scaffolds with limited charge accessible surface is considered as an imperative approach to realize energy-dense and power-intensive lithium-sulfur(Li-S)*** this work,the concept of concurrent hetero-/homo-geneous electrocatalysts is proposed to simultaneously mediate liquid-solid conversion of lithium polysulfides(LiPSs)and solid lithium disulfide/sulfide(Li_(2)S_(2)/Li_(2)S)propagation,the latter of which suffers from sluggish reduction kinetics due to buried conductive scaffold surface by extensive deposition of Li_(2)S_(2)/Li_(2)*** selected model material to verify this concept is a two-in-one catalyst:carbon nanotube(CNT)scaffold supported iron-cobalt(Fe-Co)alloy nanoparticles and partially carbonized selenium(C-Se)*** Fe-Co alloy serves as a heterogeneous electrocatalyst to seed Li_(2)S_(2)/Li_(2)S through sulphifilic active sites,while the C-Se sustainably releases soluble lithium polyselenides and functions as a homogeneous electrocatalyst to propagate Li_(2)S_(2)/Li_(2)S via solution *** bi-phasic mediation of the sulfur species benefits reduction kinetics of LiPS conversion,especially for the massive Li_(2)S_(2)/Li_(2)S growth scenario by affording an additional solution directed route in case of conductive surface being largely *** strategy endows the Li-S batteries with improved cycling stability(836 mA h g^(-1)after 180 cycles),rate capability(547 mA h g^(-1)at 4 C)and high sulfur loading superiority(2.96 mA h cm^(-2)at 2.4 mg cm^(-2)).This work hopes to enlighten the employment of bi-phasic electrocatalysts to dictate liquid-solid transformation of intermediates for conversion chemistry batteries.

关键词： Lithium-sulfur batteries Electrocatalysis Lithium polysulfides Sulfur cathode Energy density

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引力波与引力检验

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科学通报 2024年第25期69卷 3770-3784页

作者：赵文牛睿中国科学技术大学天文学系合肥230026

引力检验的核心是通过观测数据来比较广义相对论和其他修改引力的预言,以期得到对理论的证伪或者对模型参数的限制.致密双星并合的引力波是当前唯一被确定探测到的引力波源,它首次提供了一种在强引力场环境中检验引力理论的新手段.本文... 详细信息

引力检验的核心是通过观测数据来比较广义相对论和其他修改引力的预言,以期得到对理论的证伪或者对模型参数的限制.致密双星并合的引力波是当前唯一被确定探测到的引力波源,它首次提供了一种在强引力场环境中检验引力理论的新手段.本文针对该类引力波源,结合目前地基激光干涉仪引力波探测器的观测结果,介绍了利用引力波进行引力检验的基本方法,以及目前和未来可能得到的测量精度.特别是,我们分别针对模型相关的检验方法和模型无关的检验方法,介绍了如何利用引力波来检验各种修改引力方案,包括Brans-Dicke引力、一般的屏蔽修改引力、一般的宇称破坏引力,以及如何利用引力波来检验引力波的相位参数、速度、色散关系、光度距离、极化模式及引力的宇称对称性等基本性质.

关键词：引力波引力检验广义相对论修改引力

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Arbuscular mycorrhiza and plant growth promoting endophytes facilitates accumulation of saponin under moderate drought stress

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Chinese Herbal Medicines 2024年第2期16卷 214-226页

作者： Shubiao Qian qing Zhang Sha Li rui Shi Xiahong He Shuhui Zi Tao Liu Yunnan Agricultural University Kunming 650201China National&Local Joint Engineering Research Center on Gemplasm Utilization&Innovation of Chinese Medicinal Materials in Southwest China Yunnan Agricultural UniversityKunming 650201China Institute of Sericulture and Honeybee Honghe 661101China Southwest Forestry University Kunming 650201China

Objective: Paris polyphylla var. yunnanensis, one of the important medicinal plant resources in Yunnan,China, usually takes 6–8 years to be harvested. Therefore, it is urgent to find a method that can not only shorten its growth years, but also improve its quality. In this study, we examined the effects of a combination treatment of arbuscular mycorrhizal fungi(AMF) and plant growth-promoting endophytes(PGPE)and drought stress on the accumulation of saponins in ***: P. polyphylla var. yunnanensis was infected with a mixture of AMF and PGPE under drought stress. The content of saponins, as well as morphological, physiological, and biochemical indicators, were all measured. The UGTs gene related to saponin synthesis was obtained from transcriptome data by homologous comparison, which were used for RT-PCR and phylogenetic ***: Regardless of water, AMF treatment could infect the roots of P. polyphylla var. yunnanensis, however double inoculation with AMF and PGPE(AMF + PGPE) would reduce the infection rate of AMF. Plant height, aboveground and underground fresh weight did not differ significantly between the single inoculation AMF and the double inoculation treatment under different water conditions, but the inoculation treatment significantly increased the plant height of P. polyphylla var. yunnanensis compared to the noninoculation treatment. Single inoculation with AMF considerably increased the net photosynthetic rate,stomatal conductance, and transpiration rate of P. polyphylla var. yunnanensis leaves under various water conditions, but double inoculation with AMF + PGPE greatly increased the intercellular CO2concentration and chlorophyll fluorescence parameter(Fv/Fm). Under diverse water treatments, single inoculation AMF had the highest proline content, whereas double inoculation AMF + PGPE may greatly improve the amount of abscisic acid(ABA) and indoleacetic acid(IAA) compared to normal water under moderate drought. Double inoculation AMF + P

关键词： arbuscular mycorrhizal fungi gene expression Paris polyphylla Smith var.yunnanensis (Franch.)Hand.-Mazz plant growth-promoting endophytes steroidal saponin

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Clinical efficacy of endovascular revascularization combined with vacuum-assisted closure for the treatment of diabetic foot

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World Journal of Diabetes 2024年第7期15卷 1499-1508页

作者： Feng-rui Lei Xiao-Fei Shen Chuang Zhang Xin-qing Li Hao Zhuang Hong-Fei Sang Department of Vascular Surgery The Second Affiliated Hospital of Soochow UniversitySuzhou 215004Jiangsu ProvinceChina

BACKGROUND The diabetic foot is a common cause of disability and death,and comorbid foot infections usually lead to prolonged hospitalization,high healthcare costs,and a significant increase in amputation *** most diabetic foot trauma is complicated by lower extremity arteriopathy,which becomes an independent risk factor for major amputation in diabetic foot *** To establish the efficacy and safety of endovascular revascularization(ER)combined with vacuum-assisted closure(VAC)for the treatment of diabetic *** Clinical data were collected from 40 patients with diabetic foot admitted to the Second Affiliated Hospital of Soochow University from April 2018 to April *** foot lesions were graded according to Wagner’s classification,and blood flow to the lower extremity was evaluated using the ankle-brachial index test and computerized tomography angiography of the lower extremity *** subcutaneous insulin infusion pumps were used to achieve glycemic *** limb revascularization was facilitated by percutaneous transluminal balloon angioplasty(BA)or *** were cleaned by nibbling *** granulation tissue growth was induced by VAC,and wound repair was performed by skin grafting or skin flap *** Of the 35 cases treated with lower limb revascularization,34 were successful with a revascularization success rate of 97%.Of these,6 cases underwent stenting after BA of the superficial femoral artery,and 1 received popliteal artery stent *** the 25 cases treated with infrapopliteal artery revascularization,39 arteries were reconstructed,7 of which were treated by drug-coated BA and the remaining 32 with plain old *** was performed in 32 ***-four cases of skin grafting and 2 cases of skin flap transplantation were *** patients underwent major amputations,whereas 17 had minor amputations,accounting for a success limb salvage rate of 95%.CONCLUSION ER in

关键词： Diabetic foot Revascularization Vacuum-assisted closure Balloon angioplasty Wound repair

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