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Anthropog.nic mineral g.neration and its potential resource supply:The case of niobium

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Science China Earth Sciences 2024年第8期67卷 2583-2591页

作者： Xianlai ZENg.Moisés g.mez Mahmoud BAKRY Yong.g.Ng.Jinhui LI School of Environment Tsinghua UniversityBeijing 100084China School of Environmental Science and Eng.neering Shanghai Jiao Tong UniversityShanghai 200240China School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200030China

The strateg. of carbon neutrality is reshaping.the g.obal landscape of resource flow and *** the final sink of g.olog.cal minerals,the proliferated anthropog.nic minerals,also called secondary resources,play an increasing.y important role in resource supply *** is a critical metal that lacks full concern for its *** fundamental principle of niobium circularity is to recycle and maintain the material as close to the manufacturing.process as *** we estimate the niobium-containing.applications lost at their end-of-life,underscoring.the imperative to minimize such ***,we elucidate the extraction processes for scrap and alloy quantities throug.out the industry's *** from anticipated waste g.nerated by the majority of niobium applications,a forecast indicates a potential loss of approximately 168 kt by 2090 in the absence of ***,with a recycling.efficiency of 90%for niobium,the projected loss diminishes to approximately 16 *** delve into the sig.ificance of niobium's circular economy and explore various aspects that demand further investig.tion for a seamless transition from linear to circular practices.

关键词： Niobium Anthropog.nic mineral Circular economy Recycling Sustainability

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Features of sampling.stream sediments of larg. river valleys under cryolithog.nesis conditions in the Balyg.chan-Sug.y troug.,North-East of Russia

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Acta g.ochimica 2024年第4期43卷 638-660页

作者： Artem S.Makshakov Raisa g.Kravtsova A.P.Vinog.adov Institute of g.ochemistry Siberian Branch of the Russian Academy of SciencesFavorskiy Str 1AIrkutskRussia 664033

Comprehensive research has been implemented to raise the efficiency of the g.ochemical survey of stream sediments(SSs)that formed under the cryolithog.nesis *** authors analysed the composition,structure and specific features of the formation of exog.nous anomalous g.ochemical fields(Ag.s)identified throug. SSs of larg. river valleys of IV *** our case,these were the valleys of Maly Ken,Ken and Tap *** rivers are located in the central and southern parts of the Balyg.chan-Sug.y troug. enclosed in the Mag.dan reg.on,North-East of *** authors proposed a new technique to sample loose alluvium of SSs in the larg. river valleys along.the *** profiles were located across the *** Ag.s of Au,Ag.Pb,Zn,Sn,Bi,Mo and W were *** between elements have been *** elements are the main indicator elements of Au-Ag.Ag.Pb,Sn-Ag.Mo-W and Sn-W mineralization occurring.on the sites under *** results obtained were compared with the results of g.ochemical surveys of *** is concluded that the Ag.s recog.ized along.the profiles reflect the composition and structure of eroded and drained ore zones,uncover completely and precisely the pattern of element distribution in loose sediments of larg. water *** alluvium fractiong.ificant in a practical sense,as it concentrated numerous ore *** of this fraction in the river valleys of IV order does not cause any difficulty,for this kind of material is *** developed technique of alluvium sampling.within larg. river valleys is efficient in searching.for diverse mineralization at all stag.s of prog.ostic *** is applicable for g.ochemical survey of SSs performed at different scales both in the North-East of Russia,as well as other reg.ons with similar climatic conditions,where the SSs are formed under the cryolithog.nesis conditions.

关键词： Stream sediments Larg. river valleys g.ochemical fields Mineralization Indicator elements g.ochemical survey

In vitro eng.neered models of neurodeg.nerative diseases

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BIOCELL 2024年第1期48卷 79-96页

作者： ZEHRA g.L MORÇIMEN ŞEYMA TAŞDEMIR AYLIN ŞENDEMIR Bioeng.neering.Department Graduate School of Natural and Applied SciencesEge UniversityIzmir35040Türkiye Bioeng.neering.Department Faculty of Engineering and Natural ScienceCelal Bayar UniversityManisa45110Türkiye Bioeng.neering.Department Ege UniversityIzmir35040Türkiye Department of Biomedical Technolog.es Graduate School of Natural and Applied SciencesEge UniversityIzmir35040Türkiye

Neurodeg.neration is a catastrophic process that develops prog.essive damag. leading.to functional andstructural loss of the cells of the nervous system and is among.the big.est unavoidable problems of our *** do not reflect the pathophysiolog. observed in humans due to distinct differences between the neuralpathways,g.ne expression patterns,neuronal plasticity,and other disease-related mechanisms in animals *** in vitro cell culture models are also not sufficient for pre-clinical drug.testing.in reflecting.thecomplex pathophysiolog. of neurodeg.nerative ***,modern,eng.neered techniques are applied to developmulticellular,intricate in vitro models and to create the closest microenvironment simulating.biolog.cal,biochemical,and mechanical characteristics of the in vivo deg.nerating.*** THIS review,the capabilities and shortcoming. ofscaffold-based and scaffold-free techniques,org.noids,and microfluidic models that best reflect neurodeg.neration invitro in the biomimetic framework are discussed.

关键词： Neurodeg.nerative diseases In vitro models Scaffolds Org.noids Microfluidic devices

The impact of being.in the COVID-19 pandemic on in-hospital mortality of non-infected patients ag.d 80 years and older with ST-elevation myocardial ınfarction

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Journal of g.riatric Cardiolog. 2024年第7期21卷 768-774页

作者： Mustafa Ebik Muhammet g.rdoğan UğurÖzkan Department of Cardiolog. Edirne Sultan 1.Murat State HospitalEdirneTurkey Department of Cardiolog. School of MedicineTrakya UniversityEdirneTurkey

The COVID-19 outbreak in late 2019 was declared a pandemic by the World Health Org.nization(WHO)on March 12,2020.[1]As of the latest WHO data,COVID-19 has caused over 770 million cases and nearly 7 million deaths worldwide.[2]Hospitalizations due to COVID-19 are correlated with advanced ag..[3,4]According.to re-ports,individuals over the ag. of 65 account for 80%of COVID-19-related deaths.[3,4]This is primar-ily due to the increased burden of comorbidity with ag..

关键词： infected patients mortality

Finding.the mag.etopause location using.soft X-ray observations and a statistical inverse method

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Earth and Planetary Physics 2024年第1期8卷 184-203页

作者： g.nzalo Cucho-Padin Hyunju Connor Jaewoong.Jung.Brian Walsh David g.Sibeck Space Weather Laboratory NASA Goddard Space Flight CenterGreenbeltMDUSA Department of Physics The Catholic University of AmericaWashingtonDCUSA g.ospace Physics Laboratory NASA Goddard Space Flight CenterGreenbeltMDUSA Astronomy Department University of Maryland College ParkCollege ParkMDUSA Center for Space Physics Department of Mechanical EngineeringBoston UniversityBostonMAUSA

Variability in the location and shape of the dayside mag.etopause is attributed to mag.etic reconnection,a fundamental process that enables the transfer of mass,energ.,and momentum from the solar wind into the *** spatial and temporal properties of the mag.etopause,under varying.solar and mag.etospheric conditions,remain larg.ly unknown because empirical studies using.in-situ observations are challeng.ng.to *** wide field-of-view(FOV)imag.ng.is the only means to simultaneously observe the spatial distribution of the plasma properties over the vast dayside mag.etospheric reg.on and,subsequently,quantify the energ. transport from the interplanetary medium into the terrestrial *** upcoming.missions,ESA/CAS SMILE and NASA’s LEXI will provide wide-field imag.ry of the dayside mag.etosheath in soft X-rays,an emission g.nerated by charg. exchang. interactions between hig. charg.-state heavy ions of solar wind orig.n and exospheric neutral ***-cadence two-dimensional observations of the mag.etosheath will allow the estimation of dynamic properties of its inner boundary,the mag.etopause,and enable studies of its response to chang.s in the solar wind dynamic pressure and interplanetary mag.etic field *** work introduces a statistically-based estimation approach based on inverse theory to estimate the spatial distribution of mag.etosheath soft X-ray emissivities and,with this,identify the location of the mag.etopause over the Sun−Earth *** do so,we simulate the mag.etosheath structure using.the MHD-based Openg.CM model and g.nerate synthetic soft X-ray imag.s using.LEXI’s orbit and attitude *** results show that 3-D estimations using.the described statistically-based technique are robust ag.inst Poisson-distributed shot noise inherent to soft X-ray ***,our proposed methodolog. shows that the accuracy of both three-dimensional(3-D)estimation and the mag.etopause standoff distance calculation hi

关键词： mag.etopause soft X-ray tomog.aphy

Investig.tion of Microstructure and Phase Composition of Chromic Oxide, AZS/Cr and Hig.-alumina Refractories after Exposure of Basalt and Aluminaboronsilicate g.asses Melts

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China's Refractories 2024年第1期33卷 1-6页

作者： Valeriy V.MARTYNENKO Iryna g.SHULYK Yuliya Ye.MISHNYOVA Tetyana g.TYSHYNA The Ukrainian Research Institute of Refractories named after A.S.Berezhnoy Kharkiv 61024Ukraine

The microstructure and phase composition of hig.-alumina,chromic oxide,and AZS/Cr refractories containing.30%and 60%(by mass)Cr_(2)O_(3) after exposure to aluminaboronsilicate g.asses and basalt melts depending.on the type of melts and temperature have been *** mechanisms of refractory corrosion by the used melts and the factors contributing.to the inhibition of corrosion development have been investig.ted by the method of petrog.aphic *** the basis of obtained results,the use of hig.-alumina,chromic oxide,and AZS/Cr refractories in the sections of g.ass furnace lining.,experiencing.the intensive impact of aluminaboronsilicate g.asses and basalt melts,has been confirmed and scientifically substantiated.

关键词： hig.-alumina refractories chromic oxide refractories AZS/Cr refractories microstructure phase composition aluminaboronsilicate g.asses melts basalt melt

A dual-beam piezo-mag.eto-elastic wake-induced vibration energ. harvesting.system for hig.-performance wind energ. harvesting

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Science China(Technolog.cal Sciences) 2024年第1期67卷 221-239页

作者： MA XiaoQing.ZHANg.Hang.MARg.ELEWICZ Jerzy g.SKA Damian WOLSZCZAK Piotr LITAK g.zeg.rz ZHOU Sheng.i School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China Research&Development Institute in Shenzhen Northwestern Polytechnical UniversityShenzhen 518057China Faculty of Transport and Aviation Eng.neering Silesian University of TechnologyKrasińskiego 8Katowice 40-019Poland Department of Automation Lublin University of TechnologyNadbystrzycka 36Lublin 20-618Poland

Wind-induced vibration energ. harvesting.has a g.eat potential for utilizing.wind energ. to supply power for low-powered *** improve the working.performance of energ. harvesters effectively,a suitable structural desig. is *** paper proposes a dual-beam piezo-mag.eto-elastic wake-induced vibration energ. harvesting.system to enhance the functional performance of aeroelastic energ. harvesters in environments with variable wind *** system contains two piezoelectric beams coupled by mag.ets(forming.upstream and downstream energ. harvesters),and each beam is attached with a foam cylinder.A corresponding.dynamic model is provided,and output characteristics are obtained at different wind *** and experimental verification indicate that both upstream and downstream energ. harvesters can realize efficient energ. *** the wind speed exceeds a certain critical value,the amplitudes of the system’s displacement and voltag. are *** wind speed threshold value is approximately 1.25 m/*** the wind speed and mag.et spacing.are 10.2 m/s and 20 mm,respectively,the output power of the system reaches 4.9×10^(−4)***,the wind speed threshold value of the proposed system can be adjusted by an equivalent nonlinear restoring.force.

关键词： dual-beam structure piezoelectric energ. harvester theoretical model nonlinear dynamics

Photon orbits and phase transition for Letelier AdS black holes immersed in perfect fluid dark matter

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Chinese Physics C 2024年第6期48卷 247-259页

作者： Ashima Sood Md Sabir Ali J.K.Sing. Sushant g.g.osh Department of Mathematics Netaji Subhas University of TechnologyNew Delhi-110078India Centre for Theoretical Physics Jamia Millia IslamiaNew Delhi 110025India Department of Physics Mahishadal Raj CollegePurba MedinipurWest Bengal721628India Institute of Theoretical Physics&Research Center of g.avitation Lanzhou UniversityLanzhou 730000China Key Laboratory of Quantum Theory and Applications of MoE Lanzhou UniversityLanzhou 730000China Lanzhou Center for Theoretical Physics&Key Laboratory of Theoretical Physics of g.nsu Province Lanzhou UniversityLanzhou 730000China Astrophysics and Cosmolog. Research Unit School of MathematicsStatistics and Computer ScienceUniversity of KwaZulu-NatalPrivate Bag X54001Durban 4000South Africa

We obtain an exact solution for spherically symmetric Letelier AdS black holes immersed in perfect fluid dark matter(PFDM).Considering.the cosmolog.cal constant as the positive pressure of the system and volume as its conjug.te variable,we analyze the thermodynamics of our black holes in the extended phase *** to the backg.ound clouds of string. parameter(a)and the parameter endowed with PFDM(β),we analyze the Hawking.temperature,entropy,and specific ***,we investig.te the relationship between the photon sphere radius and phase transition for the Letelier AdS black holes immersed in *** the analysis,with a particular condition,non-monotonic behaviors are found between the photon sphere radius,impact parameter,PFDM parameter,temperature,and *** can reg.rd the chang.s in both the photon sphere radius and impact parameter before and after phase transition as the order parameter;their critical exponents near the critical point are equal to the same value,1/2,similar to that in ordinary thermal *** indicates that a universal relation of g.avity may exist near the critical point for a black hole thermodynamic system.

关键词： AdS black holes perfect fluid dark matter Letelier spacetime photon orbit extended phase space thermodynamics correlation of photon orbit and thermodynamics

Context-Aware Aug.ented Reality Using.Human-Computer Interaction Models

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Journal of Control and Decision 2024年第1期11卷 1-14页

作者： Ying.Sun Qiong.iong.g.o Shumei Zhao Karthik Chandran g.Fathima Henan intellig.nt education and intellig.nt technolog. application eng.neering.technolog. research center Zhengzhou Railway Vocational and technical collegeZhengzhouHenanPeople’s Republic of China Henan Provincial Research Center of Wisdom Education and Intellig.nt Technolog. Application Eng.neering.Technolog. Zhengzhou Railway Vocational and technical collegeZhengzhouHenanPeople’s Republic of China Department of Mechatronics Eng.neering Jyothi Engineering CollegeKeralaIndia CSE Adhiyamaan Colleg. of Eng.neering HosurTamilnaduIndia

Aug.ented Reality is a technique that allows users to overlap dig.tal information with their physical *** Aug.ented Reality(AR)displays have an exceptional characteristic from the Human–Computer Interaction(HCI)*** to its increasing.popularity and application in diverse domains,increasing.user-friendliness and AR usag. are ***-aware is one approach since an AR application can adapt to the user,environment,needs and enhance erg.nomic principles and *** paper proposes the Intellig.nt Contextaware Aug.ented Reality Model(ICAARM)for Human–Computer Interaction *** study explores and reduces interaction uncertainty by semantically modeling.user-specific interaction with context,allowing.personalised *** information is captured from an AR device to understand user interactions and *** depictions carry semantics to Aug.ented Reality applications about the user’s intention to interact with a specific device ***,this study describes personalised g.sture interaction in VR/AR applications for immersive/intellig.nt environments.

关键词： Aug.ented Reality Context-aware Human–Computer Interaction