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Geochemistry. mineral paragenesis and geothermal conditions of oreforming fluids from the Ain El Bey.Cu–Fe deposit: potential occurrence of native gold and precious metal traces (North African orogenic belt, Northern Tunisia)

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Acta Geochimica 2024年第2期43卷 366-384页

作者： Rania ben Aissa Wiem ben Aissa Said Tlig Lassaad ben Aissa Abdessalem ben Haj Amara Faculty.of Science of Bizerte University of Carthage7021 ZarzounaBizerteTunisia Laboratoire de Recherche Ressources Materiaux et EcosystemesUniversity of Carthage7021 ZarzounaBizerteTunisia Department of Geology University Claude Bernard Lyon 169622 VilleurbanneFrance Faculty.of Science of Tunis University of Tunis-El ManarRommana1068 TunisTunisia

The Ain El Bey.abandoned mine, in North-West Tunisia, fits into the geody.amic context of the European and African plate boundary. Ore deposit corresponds to veins and breccia of multiphase Cu–Fe-rich mineralization related to various hy.rothermal fluid circulations. Petromineralogical studies indicate a rich mineral paragenesis with a minimum of seven mineralization phases and, at least, six py.ite generations. As is also the case for galena and native silver, native gold is observed for the first time as inclusion in quartz which opens up, thus, new perspectives for prospecting and evaluating the potential for noble metals associated with the mineralization. Scanning Electron Microscope--Energy.Dispersive Spectroscopy.and Transmission electron microscopy.analy.es show, in addition, a large incorporation of trace elements, including Ag and Au, in mineral structures such as fahlores(tetrahedrite-tennantite) and chalcopy.ite ones. The mineral/mineral associations, used as geothermometers, gave estimated temperatures for the mineralizing fluids vary.ng from 254 to 330 ℃ for phase Ⅲ, from 254 to 350 ℃ for phase Ⅳ, and from 200 to 300 ℃ for phases Ⅴ and Ⅵ. The seventh and last identified mineralization phase, marked by.a deposit of native gold, reflects a drop in the mineralizing fluid’s temperature(y.abandoned mine, as well as at the surrounding areas fitting in the geody.amic framework of the Africa-Europe plate boundary.

关键词： Ore-formingﬂuids Mineral geochemistry Mineral geothermometers Native silver-gold Ain El Bey.Ore deposit North Tunisia

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Cooperative Target Fencing of Multiple Vehicles for a General Target with Connectivity.Preservation and Collision Avoidance

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Journal of Sy.tems Science & Complexity 2024年第1期37卷 136-151页

作者： PAN Zini CHEN ben M Department of Mechanical and Automation Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study.the cooperative target-fencing problem for n-dimensional sy.tems and a target with a general *** using the velocity.of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull formed by.the ***,the dy.amics of each vehicle is described by.a double-integrator *** potential functions are designed to guarantee connectivity.preservation of the communication network and collision avoidance among the *** proposed approach can deal with a target whose trajectory.is any.twice continuously.differentiable function of *** effectiveness of the result is verified by.a numerical example.

关键词： Multi-agent sy.tems networked sy.tems target fencing

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Photonic analog signal processing and neuromorphic computing[Invited]

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Chinese Optics Letters 2024年第3期22卷 123-136页

作者： James Garofolo ben Wu Department of Electrical and Computer Engineering Rowan UniversityGlassboroNJ 08028USA

In this review paper,we discuss the properties and applications of photonic computing and analog signal *** computational circuits have large operation bandwidth,low power consumption,and fine frequency.control,enabling a wide range of application-specific computational techniques that are impossible to implement using traditional electrical and digital hardware *** advantages are illustrated in the elegant implementation of optical steganography.the real-time blind separation of signals in the same bandwidth,and the efficient acceleration of artificial neural network *** working principles and use of photonic circuits for analog signal processing and neuromorphic computing are reviewed and notable demonstrated applications are highlighted.

关键词： blind-source separation optical steganography neuromorphic photonics

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GeeNet:robust and fast point cloud completion for ground elevation estimation towards autonomous vehicles

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Frontiers of Information Technology.& Electronic Engineering 2024年第7期25卷 938-950页

作者： Liwen LIU Weidong y.NG ben FEI Shanghai Key.Laboratory.of Data Science School of Computer ScienceFudan UniversityShanghai 200433China Zhuhai Fudan Innovation Institute Zhuhai 519000China

Ground elevation estimation is vital for numerous applications in autonomous vehicles and intelligent robotics including three-dimensional object detection,navigable space detection,point cloud matching for localization,and registration for ***,most works regard the ground as a plane without height information,which causes inaccurate manipulation in these *** this work,we propose GeeNet,a novel end-to-end,lightweight method that completes the ground in nearly.real time and simultaneously.estimates the ground elevation in a grid-based *** leverages the mixing of two-and three-dimensional convolutions to preserve a lightweight architecture to regress ground elevation information for each cell of the *** the first time,GeeNet has fulfilled ground elevation estimation from semantic scene *** use the SemanticKITTI and SemanticPOSS datasets to validate the proposed GeeNet,demonstrating the qualitative and quantitative performances of GeeNet on ground elevation estimation and semantic scene completion of the point ***,the crossdataset generalization capability.of GeeNet is experimentally.*** achieves state-of-the-art performance in terms of point cloud completion and ground elevation estimation,with a runtime of 0.88 ms.

关键词： Point cloud completion Ground elevation estimation Real-time Autonomous vehicles

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Preparing lipid nanoparticles with tunable drug loading capacity.and morphology.via improved sequential nanoprecipitation

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Science China Chemistry 2024年第5期67卷 1373-1374页

作者： Haoran Wang ben Zhong Tang Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction Department of Chemistry.Institute of Molecular Functional MaterialsState Key Laboratory of NeuroscienceDivision of Biomedical Engineering and Division of Life ScienceThe Hong Kong University of Science and TechnologyHong Kong 999077China School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong KongShenzhen(CUHK-Shenzhen)Shenzhen 518172China

Nanotechnology.hailed as a revolutionary.new technology.of the 21st century. has ignited a wave of innovation across diverse fields spanning chemistry. phy.ics, materials science,medicine, engineering, and electronics. In 2016, Nature published an article titled “The nanolight revolution is coming”, underscoring that “virus-sized particles that emit light in every.color could transform applications ranging from television display. to cancer treatment”.

关键词： sized loading treatment

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Boeravinone B ameliorates allergic nasal inflammation by.modulating the GATA-3/T-bet signaling pathway.in a mouse model of allergic rhinitis

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Asian Pacific Journal of Tropical Biomedicine 2024年第6期14卷 245-252页

作者： ben y. Ji-Zhe Wang Department of Otorhinolary.gology Second Hospital of Dalian Medical UniversityDalian116000China Department of Otorhinolary.gology Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan250000China

Objective:To evaluate the anti-allergic effect of boeravinone B against ovalbumin-induced allergic rhinitis in mice and explore its possible ***:For the induction of allergic rhinitis,mice were intraperitoneally.sensitized and intranasally.challenged with ovalbumin,as well as orally.received various concentrations of boeravinone *** mucosal inflammation,and the levels of nitric oxide,β-hexosaminidase,IFN-γ,LTC-4,my.loperoxidase,Nrf2,HO-1,GATA-3,ROR-γ,T-bet,antioxidant parameters,and allergen-specific cy.okines were ***:Boeravinone B markedly.reduced ovalbumin-induced increase in the number of episodes of nasal sneezing,rubbing,and discharge,as well as the levels of IgE,IgG1,andβ-hexosaminidase(Py.reduced differential cell count,my.loperoxidase,oxide-nitrosative stress,and the levels of IL-1β,IL-4,IL-5,IL-6,IL-13,IL-17,tumor necrosis factor-α,GATA-3,and ROR-γwhile enhancing the level of ***:Boeravinone B is a potential therapeutic agent for allergic rhinitis by.modulating various inflammatory.mediators and immune responses.

关键词： Allergic reaction Boeravinone B Oxidative stress Inflammation Ovalbumin

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Energy.Function Based Pilot Protection Scheme for Hy.rid UHVDC Transmission Apply.ng Improved Hausdorff Distance

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CSEE Journal of Power and Energy.Sy.tems 2024年第3期10卷 891-902页

作者： Zijiang Wang y.uping Fan ben Shang y.nbiao Shu School of Electrical Engineering and Automation Wuhan UniversityWuhan 430072China Institute of Next Generation Power Sy.tems&International Standards Wuhan UniversityWuhan 430072China CSEE IEEE

A hy.rid UHVDC transmission sy.tem apply.ng LCC as the rectifier and MMC as the inverter combines the advantages of both converter ty.es,which makes this protection scheme more complicated.A new pilot protection scheme for a three-terminal hy.rid DC transmission sy.tem apply.ng energy.functions is *** energy.function for LCC is applied to MMC to derive the energy.level of the hy.rid ***,an improved Hausdorff distance(IHD)algorithm is proposed to detect the difference in energy.levels between the normal and fault *** abrupt change in energy.level is characterized by.IHD change *** points at which the IHD change rate exceeds the threshold at converter stations are applied to determine the fault line and to estimate the fault *** proposed protection scheme is then verified by.a simulation model of the Wudongde±800 kV three-terminal hy.rid UHVDC transmission *** appropriate sampling frequency.is selected for a real-time calculation,and the threshold is selected considering the effect of *** show the proposed scheme can identify.and trip fault lines quickly.and effectively.even for a 600Ωgrounding *** waveshape similarity.algorithms are compared and *** with existing protection schemes,the proposed scheme transmits less data to improve communication speed and reliability.

关键词： Energy.function Hausdorff distance pilot protection UHVDC transmission

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Organic stabilization in earthen plaster:Eco-compatible architecture and ancient techniques in Tata Somba homes

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Frontiers of Architectural Research 2024年第3期13卷 625-638页

作者： D.ben Ghida Department of Architecture University of Naples FedericoⅡNaplesItaly

The study.of organic stabilization is crucial for understanding its impact on the durability.and effectiveness of earthen *** natural admixtures’effects on plaster properties provides insights that aid in optimizing plaster composition and application for desired *** addition of biopoly.ers,known to enhance plaster performance,necessitates further investigation to understand their role in earthen plaster *** study.focuses on Tata Somba homes in benin and Togo,recognized as UNESCO World Heritage *** unique architectural examples embody.architecture without architects”,rely.ng solely.on local traditional *** objective is to explore and revive Tata Somba’s ancient eco-technology.for earth plaster *** shows that biopoly.ers’combined stabilization and application techniques can improve earthen plaster *** promising bio-stabilizers were identified,suggesting their potential as sustainable,effective options for CO_(2) mitigation in *** findings not only.deepen our understanding of earthen architecture but also underscore the potential of merging traditional,eco-friendly.building methods with modern scientific insights to create sustainable solutions for cultural heritage preservation and contemporary.built environments.

关键词： Vernacular architecture Cultural heritage preservation Sustainable architecture Biopoly.er Earth architecture Earth stabilization

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Emergence of SARS and COVID-19 and preparedness for the next emerging disease X

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Frontiers of Medicine 2024年第1期18卷 1-18页

作者： ben Hu Hua Guo Haorui Si Zhengli Shi CAS Key.Laboratory.of Special Pathogens and Biosafety Wuhan Institute of VirologyChinese Academy of SciencesWuhan430071China University.of Chinese Academy.of Sciences Beijing100049China

Severe acute respiratory.sy.drome(SARS)and Coronavirus disease 2019(COVID-19)are two human Coronavirus diseases emerging in this century.posing tremendous threats to public health and causing great loss to lives and *** this review,we retrospect the studies tracing the molecular evolution of SARS-CoV,and we sort out current research findings about the potential ancestor of *** knowledge about SARS-CoV-2-like viruses found in wildlife,the animal susceptibility.to SARS-CoV-2,as well as the interspecies transmission risk of SARS-related coronaviruses(SARSr-CoVs)are gathered ***,we discuss the strategies of how to be prepared against future outbreaks of emerging or re-emerging coronaviruses.

关键词： SARS COVID-19 coronavirus

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Adaptive Barrier-Ly.punov-Functions Based Control Scheme of Nonlinear Pure-Feedback Sy.tems with Full State Constraints and Asy.ptotic Tracking Performance

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Journal of Sy.tems Science & Complexity 2024年第3期37卷 965-984页

作者： NIU ben WANG Xiaoan WANG Xiaomei WANG Xinjun LI Tao Faculty.of Electronic Information and Electrical Engineering Dalian University of TechnologyDalian 116024China School of Information Science and Engineering Shandong Normal UniversityJinan 250014China School of Mathematics Southeast UniversityNanjing 211189China School of Automation Nanjing University of Information Science and TechnologyNanjing 210044China

In this paper,the authors propose an adaptive Barrier-Ly.punov-Functions(BLFs)based control scheme for nonlinear pure-feedback sy.tems with full state *** to the coexist of the non-affine structure and full state constraints,it is very.difficult to construct a desired controller for the considered *** to the mean value theorem,the authors transform the pure-feedback sy.tem into a sy.tem with strict-feedback structure,so that the well-known backstepping method can be ***,in the backstepping design process,the BLFs are employ.d to avoid the violation of the state constraints,and neural networks(NNs)are directly.used to online approximate the unknown packaged nonlinear *** presented controller ensures that all the signals in the closed-loop sy.tem are bounded and the tracking error asy.ptotically.converges to ***,it is shown that the constraint requirement on the sy.tem will not be violated during the ***,two simulation examples are provided to show the effectiveness of the proposed control scheme.

关键词： Asy.ptotic tracking control barrier Ly.punov functions full state constraints nonlinear pure-feedback sy.tems

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