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江门新会区地质灾害分布规律及影响因素分析

云南地质 2024年第2期43卷 239-243页

作者：曹飞龙岑雷李颖博何钰莹广东省地质局第六地质大队广东江门529000

地质灾害越来越成为影响人居和生产生活环境安全的重要制约因素,广东江门市新会区地质灾害类型主要为崩塌和滑坡,采用空间统计与相关分析的方法对地质灾害的影响因素进行定量分析,结果表明:影响新会区崩塌、滑坡地质灾害发生的主控因素... 详细信息

地质灾害越来越成为影响人居和生产生活环境安全的重要制约因素,广东江门市新会区地质灾害类型主要为崩塌和滑坡,采用空间统计与相关分析的方法对地质灾害的影响因素进行定量分析,结果表明:影响新会区崩塌、滑坡地质灾害发生的主控因素是高程、坡度和工程地质岩组,降雨及人类工程活动是重要的外在激发因素。

关键词：地质灾害崩塌滑坡分布规律影响因素新会区广东江门

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海洋鱼类肠道微生物研究进展

安徽农业科学 2024年第5期52卷 19-22,31页

作者：田彩娟赖晓芳何玉英高焕江苏海洋大学海洋科学与水产学院/江苏省海洋生物资源与环境重点实验室江苏连云港222005 江苏省农业种质资源保护与利用平台江苏南京210014 中国水产科学研究院黄海水产研究所山东青岛266071

肠道作为机体最重要的消化和免疫器官,其肠道微生物复杂多样、种类繁多,对宿主的生长和健康具有至关重要的作用。对于数量众多的海洋鱼类而言,肠道微生物的研究已经取得了很多进展。综述了国内外海洋鱼类肠道微生物的研究进展,包括海洋... 详细信息

肠道作为机体最重要的消化和免疫器官,其肠道微生物复杂多样、种类繁多,对宿主的生长和健康具有至关重要的作用。对于数量众多的海洋鱼类而言,肠道微生物的研究已经取得了很多进展。综述了国内外海洋鱼类肠道微生物的研究进展,包括海洋鱼类肠道微生物的研究方法、组成、影响因素以及肠道微生物对海洋鱼类的影响机制等,以期为促进海洋鱼类健康、高效、绿色和可持续发展提供一定的指导和帮助。

关键词：肠道微生物海洋鱼类研究方法影响因素影响机制

Emerging role of lncRNAs as mechanical signaling molecules in mechanotransduction and their association with Hippo-YAP signaling:a review

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2024年第4期25卷 280-292页

作者： Siyi LIN Xinyu he ying WANG yu CheN Aifu LIN College of Medicine Zhejiang UniversityHangzhou 310058China College of Life Sciences Zhejiang UniversityHangzhou 310058China Cancer Center Zhejiang UniversityHangzhou 310058China Key Laboratory for Cell and Gene Engineering of Zhejiang Province Hangzhou 310058China International School of Medicine International Institutes of Medicinethe Fourth Affiliated Hospital of Zhejiang University School of MedicineYiwu 322000China Key Laboratory of Cancer Prevention and Intervention China National Ministry of EducationHangzhou 310058China Future health Laboratory Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China

Cells within tissues are subject to various mechanical forces,including hydrostatic pressure,shear stress,compression,and *** mechanical stimuli can be converted into biochemical signals through mechanoreceptors or cytoskeleton-dependent response processes,shaping the microenvironment and maintaining cellular physiological *** studies have demonstrated the roles of Yes-associated protein(YAP)and its homolog transcriptional coactivator with PDZ-binding motif(TAZ)as mechanotransducers,exerting dynamic influence on cellular phenotypes including differentiation and disease *** regulatory function entails the involvement of the cytoskeleton,nucleoskeleton,integrin,focal adhesions(FAs),and the integration of multiple signaling pathways,including extracellular signal-regulated kinase(ERK),wingless/integrated(WNT),and Hippo ***,emerging evidence substantiates the implication of long non-coding RNAs(lncRNAs)as mechanosensitive molecules in cellular *** this review,we discuss the mechanisms through which YAP/TAZ and lncRNAs serve as effectors in responding to mechanical ***,we summarize and elaborate on the crucial signal molecules involved in mechanotransduction.

关键词： YAP/TAZ Long non-coding RNA(lncRNA) Mechanotransduction F-actin

Flotation separation of scheelite from calcite using luteolin as a novel depressant

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 462-472页

作者： Xiaokang Li ying Zhang Haiyang he yu Wu Danyu Wu Zhenhao Guan Faculty of Land and Resources Engineering Kunming University of Science and TechnologyKunming 650093China State Key Laboratory of Clean Utilization of Complex Non-Ferrous Metal Resources Kunming University of Science and TechnologyKunming 650093China

This paper proposes luteolin(LUT)as a novel depressant for the flotation-based separation of scheelite and calcite in a sodium oleate(NaOL)*** suitability of LUT as a calcite depressant is confirmed through micro-flotation *** pH=9,with LUT concentration of 50 mg·L^(-1) and NaOL concentration of 50 mg·L^(-1),scheelite recovery reaches 80.3%.Calcite,on the other hand,exhibits a recovery rate of 17.6%,indicating a significant difference in floatability between the two ***,the surface modifica-tions of scheelite and calcite following LUT treatment are characterized using adsorption capacity testing,Zeta potential analysis,Fourier transform infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),and atomic force microscopy(AFM).The study in-vestigates the selective depressant mechanism of LUT on *** capacity testing and Zeta potential analysis demonstrate sub-stantial absorption of LUT on the surface of calcite,impeding the further adsorption of sodium oleate,while its impact on scheelite is ***-IR and XPS analyses reveal the selective adsorption of LUT onto the surface of calcite,forming strong chemisorption bonds between the hydroxyl group and calcium ions *** directly illustrates the distinct adsorption densities of LUT on the two miner-al ***,LUT can effectively serve as a depressant for calcite,enabling the successful separation of scheelite and calcite.

关键词： scheelite calcite luteolin flotation depressant separation

Transcriptional Regulation of YP3680 by Rov A and Rcs AB in Yersinia pestis biovar Microtus

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Biomedical and Environmental Sciences 2022年第3期35卷 234-238页

作者： LIU Lei FANG Nan LIU Wan Bing he ying yu LIU Yan ZHANG Yi Quan Department of Transfusion Medicine General Hospital of Central Theater Command of the PLAWuhan 430070HubeiChina The First School of Clinical Medicine Southern Medical UniversityGuangzhou 510280GuangdongChina Beijing USCI Medical Laboratory Co. Ltd.Building C7YiYuan Industrial BaseBeijing 100195China Department of Clinical Laboratory Nantong Third Hospital Affiliated to Nantong UniversityNantong 226006JiangsuChina

Type-VI secretion system(T6SS)is a widespread bacteriophage-like complex in bacteria that participates in multiple physiological processes,including metal ion uptake,bacterial competition,and biofilm formation^([1]).Y... 详细信息

关键词： agent Regulation competition

Porous S-doped carbon nitride foam with accelerated charge dynamics for synchronous photocatalytic hydrogen production and highly selective oxidation of amines

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Nano Research 2024年第8期17卷 6860-6869页

作者： yu he Aiping Wu Nan Wang ying Xie Chungui Tian Honggang Fu Key Laboratory of Functional Inorganic Material Chemistry(Ministry of Education of the People’s Republic of China) Heilongjiang UniversityHarbin 150080China

Photocatalytic hydrogen evolution coupled with organic oxidation holds great promise for converting solar energy into high-valueadded chemicals,but it is hampered by sluggish charge dynamics and limited redox ***,a porous S-doped carbon nitride(S-C_(3)N_(4−y))foam assembled from ultrathin nanosheets with rich nitrogen vacancies was synthesized using a molecular selfassembly *** S dopants and N vacancies synergistically adjusted the band structure,facilitating light absorption and enhancing the oxidation ***,the ultrathin nanosheets and porous structure provided more exposed active sites and facilitated mass and charge ***,S-C_(3)N_(4−y) foam exhibited enhanced photocatalytic activities for synchronous hydrogen evolution(4960μmol/(h·g))and benzylamine oxidation to N-benzylidenebenzylamine(4885μmol/(h·g))with high selectivity of>99%,which were approximately 17.6 and 72.9 times higher than those of bulk CN,*** photocatalytic coupling pairing reaction promotes the water splitting by consuming H2O2,thereby improving the hydrogen evolution efficiency and achieving the production of high value-added *** study provides an effective route for regulating the morphology and band structure of carbon nitride for synthesizing highly valuable chemicals.

关键词： photocatalysis S-doped carbon nitride band structure regulation hydrogen evolution coupled with benzylamine oxidation reaction mechanism

Coupled Numerical Simulation of Electromagnetic and Flow Fields in a Magnetohydrodynamic Induction Pump

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Fluid Dynamics & Materials Processing 2024年第4期20卷 889-899页

作者： he Wang ying he College of Transportation Ludong UniversityYantai264025China College of Intelligent Manufacturing City College of HuizhouHuizhou516025China

Magnetohydrodynamic(MHD)induction pumps are contactless pumps able to withstand harsh *** rate of fluid flow through the pump directly affects the efficiency and stability of the *** explore the influence of induction pump settings on the related delivery speed,in this study,a numerical model for coupled electromagnetic and flow field effects is introduced and used to simulate liquid metal lithium flow in the induction *** effects of current intensity,frequency,coil turns and coil winding size on the velocity of the working fluid are *** is shown that the first three parameters have a significant impact,while changes in the coil turns have a negligible *** maximum increase in working fluid velocity within the pump for the parameter combination investigated in this paper is approximately 618%.As the frequency is increased from 20 to 60 Hz,the maximum increase in the mean flow rate of the working fluid is approximately 241%.These research findings are intended to support the design and optimization of these devices.

关键词： Magnetic fluid multi-physical field coupling induction pump numerical simulation liquid metal conveying

Micropulse transscleral laser therapy for secondary angle-closure glaucoma in nanophthalmos: a case report

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1381-1384页

作者： Ping yu Bai-yu Hu yu he Lin Jing Han-ying Fan Jing Shu Liu-Zhi Zeng Chengdu First People’s Hospital Chengdu 610095Sichuan ProvinceChina Eye School of Chengdu University of TCM Chengdu 610075Sichuan ProvinceChina

Dear Editor,The choice of surgical intervention for nanophthalmos patients with secondary angle-closure glaucoma poses a challenging decision for *** nanophthalmos patients who have undergone filtration surgery or other intraocular procedures are more susceptible to severe complications,including choroidal effusion,malignant glaucoma,and explosive choroidal hemorrhage,all of which can lead to vision loss[1].This dilemma is particularly pronounced in patients with shorter axial *** transscleral laser therapy(M-TLT),also known as micropulse transscleral cyclophotocoagulation(MP-TSCPC),is a nonincisional laser therapy surgery for glaucoma[2].In 2015,Golan and Kurtz[3]were the first to report four patients with secondary angle-closure glaucoma in nanophthalmos with axial lengths ranging between 17 and 19 mm(mean 18 mm)who were successfully treated with M-TLT,and choroidal detachment was observed in all patients(recovery spontaneously in two patients and recovery after systemic steroid treatment in the other two),of which two had a slight decrease in visual acuity.

关键词： glaucoma surgery closure

Multi-Robot Cooperative Localization:Time-Varying Unobservable Subspace Analysis and Consistent Algorithm Design

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Journal of Systems Science & Complexity 2024年第5期37卷 1937-1955页

作者： HAO Ning he Fenghua YAO yu School of Astronautics Harbin Institute of TechnologyHarbin 150000China

This paper investigates the problem of cooperative localization(CL)for a multi-robot system(MRS)under dynamic measurement topology,which involves a group of robots collectively estimating their poses with respect to a common reference frame using ego-motion measurements and robot-to-robot relative *** authors provide a theoretical analysis of the time-varying unobservable subspace and propose a consistent cooperative localization ***,the authors introduce the relative measurement graph(RMG)to represent the relative pose measurements obtained by the MRS at each ***,the authors derive the local observability matrix over a time *** equivalent relationship is established between the local observability matrix and the spectral matrices of the ***,the authors present a method for constructing the unobservable subspace based on the RMG under different topology *** on this analysis,the authors design a consistent cooperative localization algorithm that satisfies the constraints of the time-varying unobservable *** analytical optimal solution is derived for the constrained optimization *** Carlo numerical simulations are conducted to demonstrate the consistency and accuracy of the proposed method.

关键词： Consistency cooperative localization multi-robot system null space relative measurement graph time-varying unobservable subspace