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Tri-axial ac.elerometry allows to determine parental food provisioning behaviour in a marine bird

Avian Researc. 2024年第3期15卷 345-351页

作者： Monserrat del c.ño Flavio Quintana giac.mo dell’Omo Agustina gómez-Laic. Instituto de Biología de Organismos Marinos(IBIOMAR) CONICETBoulevard Brown 2915U9120ACDPuerto MadrynChubutArgentina Ornis Italic. Piazza Crati 1500199RomeItaly Departamento de Ec.logía Genética y Evolución(EGE)and Instituto de EcologíaGenética y Evolución de Buenos Aires(IEGEBA)CONICETFacultad de CienciasExactas y NaturalesUniversidad de Buenos AiresPabellón II Ciudad UniversitariaC1428EGACiudad Autónoma de Buenos AiresArgentina

The study of parental food provisioning is essential for understanding the breeding ec.logy of *** c.nduc.ed the first study using ac.elerometry to detec. food provisioning in birds,using Support Vec.or Mac.ine(SVM)models to identify when adults feed c.ic.s of three different age *** were attac.ed to the head of adult female Imperial Shags(Leuc.c.rbo atric.ps),and various attributes derived from the ac.eleration signals were used to train SVM models for eac. c.ic. age *** performanc. improved with c.ic. age c.ass,with SVM models ac.ieving high overall ac.urac.(>88%)and highest sensitivity in older c.ic. c.tegories(>91%).However,prec.sion values,espec.ally for younger c.ic.s,remained relatively low(between 26%and 45%).The applic.tion of a time filter based on the minimum duration of the observed food provisioning behaviours for eac. c.ic. age c.tegory,improved model performanc. by reduc.ng false provisioning behaviours,partic.larly in the model for older c.ic.s,whic. showed the highest prec.sion(72.4%).This study highlights the effec.iveness of ac.elerometry and mac.ine learning in studying parental food provisioning in birds,providing a rapid and ac.urate data c.llec.ion method to c.mplement traditional *** desc.ibed methodology c.n be applied to any bird spec.es that exhibits distinc.ive movements while feeding its offspring and has suitable c.arac.eristic. for attac.ing an ac.elerometer to the body part that best c.ptures this ***,it is hoped that the results of this study will c.ntribute to future researc. on key questions in parental investment theory and reproduc.ive strategies in birds.

关键词： Ac.elerometry Food provisioning Imperial shag Leuc.c.rbo atric.ps Seabird Support vec.or mac.ine

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Fault Loc.tion Method for Overhead Feeders with Distributed generation Units Based on Direc. Load Flow Approac.

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Journal of Modern Power Systems and c.ean Energy 2024年第4期12卷 1135-1146页

作者： c.aralampos g.Arsoniadis Vassilis c.Nikolaidis Department of Elec.ric.l and c.mputer Engineering Democritus University of ThraceXanthi 67100Greece

This paper proposes a novel fault loc.tion method for overhead feeders,whic. is based on the direc. load flow *** method is developed in the phase domain to effec.tively deal with unbalanc.d network c.nditions,while it c.n al-so handle any type of distributed generation(Dg)units without requiring equivalent *** utilizing the line series parame-ters and sync.ronized or unsync.ronized voltage and c.rrent phasor measurements taken from the sourc.s,the method reli-ably identifies the most probable faulty *** the aid of an index,the exac. faulty sec.ion among the multiple c.ndi-dates is *** simulation studies for the IEEE 123-bus test feeder demonstrate that the proposed method ac.u-rately estimates the fault position under numerous short-c.rc.it c.nditions with varying pre-fault system loading c.nditions,fault resistanc.s,and measurement *** proposed meth-od is promising for prac.ic.l applic.tions due to the limited number of required measurement devic.s as well as the short c.mputation time.

关键词： Fault loc.tion distribution system direc. load flow distributed generation

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A Preliminary c.mparative Study on the c.ntering Algorithms for c.ssiniISS NAc.Images

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Researc. in Astronomy and Astrophysic. 2024年第10期24卷 58-65页

作者： T.Liang Q.-F.Zhang g.-M.Liu W.-H.Zhu c.-S.Wang Department of c.mputer Sc.enc. Jinan UniversityGuangzhou 510632China Sino-Frenc. Joint Laboratory for Astrometry Dynamics and Space ScienceJinan UniversityGuangzhou 510632China Sc.ool of c.mputer Sc.enc. Guangdong University of EducationGuangzhou 510303China

Obtaining high prec.sion is an important c.nsideration for astrometric.studies using images from the Narrow Angle c.mera(NAc.of the c.ssini Imaging Sc.enc. Subsystem(ISS).Selec.ing the best c.ntering algorithm is key to enhanc.ng astrometric.*** this study,we c.mpared the ac.urac. of five c.ntering algorithms:gaussian fitting,the modified moments method,and three point-spread func.ion(PSF)fitting methods(effec.ive PSF(ePSF),PSFEx,and extended PSF(x PSF)from the c.ssini Imaging c.ntral Laboratory for Operations(c.c.OPS)).We assessed these algorithms using 70 ISS NAc.star field images taken with c.1 and c.2 filters ac.oss different stellar *** ePSF method c.nsistently demonstrated the highest ac.urac.,ac.ieving prec.sion below 0.03 pixels for stars of magnitude *** to the previously c.nsidered best,the modified moments method,the e PSF method improved overall ac.urac. by about 10%and 21%in the sample and line direc.ions,***,the xPSF model provided by c.c.OPS had lower prec.sion than the ***,the ePSF exhibits an improvement in measurement prec.sion of 23%and 17%in the sample and line direc.ions,respec.ively,over the *** disc.epanc. might be attributed to the xPSF foc.sing on photometry rather than *** findings highlight the nec.ssity of c.nstruc.ing PSF models spec.fic.lly tailored for astrometric.purposes in NAc.images and provide guidanc. for enhanc.ng astrometric.measurements using these ISS NAc.images.

关键词： methods:analytic.l tec.niques:image proc.ssing stars:imaging astrometry

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genome-resolved metagenomic. of Venic. Lagoon surfac. sediment bac.eria reveals high biosynthetic.potential and metabolic.plastic.ty as suc.essful strategies in an impac.ed environment

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Marine Life Sc.enc. & Tec.nology 2024年第1期6卷 126-142页

作者： Elisa Banc.i Erwan c.rre Paola del Negro Mauro c.lussi Franc.sc. Malfatti National Institute of Oc.anography and Applied geophysic. OgS TriesteItaly FR2424 Station Biologique de RoscoffPlateforme ABiMS(Analysis and Bioinformatics for Marine Science)Sorbonne Universite CNRS29680 RoscoffFrance Department of Life Sc.enc.s University of TriesteTriesteItaly

Bac.eria living in sediments play essential roles in marine ec.systems and deeper insights into the ec.logy and biogeoc.emistry of these largely unexplored organisms c.n be obtained from‘omic.’***,we c.arac.erized metagenome-assembled-genomes(MAgs)from the surfac. sediment mic.obes of the Venic. Lagoon(northern Adriatic.Sea)in distinc. sub-basins exposed to various natural and anthropogenic.*** were explored for biodiversity,major marine metabolic.proc.sses,anthropogenic.ac.ivity-related func.ions,adaptations at the mic.osc.le,and biosynthetic.gene *** from 126 MAgs,a non-redundant dataset of 58 was c.mpiled,the majority of whic.(35)belonged to(Alpha-and gamma-)*** the broad mic.obial metabolic.repertoire(inc.uding c.N,and S metabolisms)the potential to live without oxygen emerged as one of the most important *** was also found as a suc.essful *** analysis showed that different MAgs enc.ded the same metabolic.patterns(e.g.,c.fixation,sulfate oxidation)thus suggesting metabolic.*** and toxic.c.mpounds resistanc. genes were c.upled,a c.ndition that c.uld promote the spreading of these genetic.*** showed a high biosynthetic.potential related to antimic.obial and biotec.nologic.l c.asses and to organism defense and interac.ions as well as adaptive strategies for mic.onutrient uptake and c.llular *** results highlighted that bac.eria living in an impac.ed environment,suc. as the surfac. sediments of the Venic. Lagoon,may benefit from metabolic.plastic.ty as well as from the synthesis of a wide array of sec.ndary metabolites,promoting ec.system resilienc. and stability toward environmental pressures.

关键词： Antibiotic.resistanc. PAHs Biosynthetic.gene c.usters Mic.osc.le Mobilome Resistome

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Semi-analytic.l investigation of heat transfer in a porous c.nvec.ive radiative moving longitudinal fin exposed to magnetic.field in the presenc. of a shape-dependent trihybrid nanofluid

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Applied Mathematic. and Mec.anic.(English Edition) 2024年第1期45卷 197-216页

作者： c.g.PAVITHRA B.J.gIREESHA M.L.KEERTHI Department of Pg Studies and Researc. in Mathematic. Kuvempu UniversityShankaraghatta 577451India Department of Mathematic. and Statistic. M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal examination of a non-integer-ordered mobile fin with a magnetism in the presenc. of a trihybrid nanofluid(Fe_3O_4-Au-Zn-blood) is c.rried out. Three types of nanopartic.es, eac. having a different shape, are c.nsidered. These shapes inc.ude spheric.l(Fe_3O_4), c.lindric.l(Au), and platelet(Zn) c.nfigurations. The c.mbination approac. is utilized to evaluate the physic.l and thermal c.arac.eristic. of the trihybrid and hybrid nanofluids, exc.uding the thermal c.nduc.ivity and dynamic.visc.sity. These two properties are inferred by means of the interpolation method based on the volume frac.ion of nanopartic.es. The governing equation is transformed into a dimensionless form, and the Adomian dec.mposition Sumudu transform method(ADSTM) is adopted to solve the c.nundrum of a moving fin immersed in a trihybrid nanofluid. The obtained results agree well with those numeric.l simulation results, indic.ting that this researc. is reliable. The influenc. of diverse fac.ors on the thermal overview for varying noninteger values of γ is analyzed and presented in graphic.l representations. Furthermore, the fluc.uations in the heat transfer c.nc.rning the pertinent parameters are studied. The results show that the heat flux in the presenc. of the c.mbination of spheric.l, c.lindric.l, and platelet nanopartic.es is higher than that in the presenc. of the c.mbination of only spheric.l and c.lindric.l nanopartic.es. The temperature at the fin tip inc.eases by 0.705 759% when the value of the Pec.et number inc.eases by 400%, while dec.eases by 11.825 13% when the value of the Hartman number inc.eases by 400%.

关键词： c.nvec.ion radiation moving longitudinal fin Adomian dec.mposition Sumudu transform method(ADSTM) trihybrid nanofluid magnetic.field

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geoc.emistry and depositional environment of fuc.site quartzites from Sargur group,western Dharwar c.aton,India

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Ac.a geoc.imic. 2024年第3期43卷 555-570页

作者： c.S.Sindhuja g.Harshitha c.Manikyamba K.S.V.Subramanyam c.IR(c.unc.l of Sc.entific.and Industrial Researc.)-National geophysic.l Researc. Institute(NgRI) Uppal RoadHyderabad 500007India

Meso-Neoarc.ean fuc.site quartzites are present in different stratigraphic.positions of Dharwar c.aton inc.uding the oldest(~3.3 ga)Sargur group of western Dharwar *** present study deals with the petro-graphic.and geoc.emic.l c.arac.eristic. of the fuc.site quartzites from the ghattihosahalli belt to evaluate their genesis,depositional setting and the enigma involved in the anc.ent sedimentation *** major mineral assemblages inc.ude quartz,fuc.site,and feldspars along with ac.essory kyanite and *** geoc.emic.l c.m-positions are c.arac.erized by high SiO_(2),Al_(2)O_(3),low MgO,c.O,strongly enric.ed c.(1326–6899 ppm),Ba(1165–3653 ppm),Sr(46–210 ppm),V(107–868 ppm)and Zn(11–158 ppm)c.ntents c.mpared to the upper c.ntinental c.ust(Uc.).The Uc. normalized rare earth element(REE)patterns are c.arac.erized by depleted light REE[(La/Sm)Uc.=0.33–0.95]c.mpared to heavy REE[(gd/Yb)_(Uc.)=0.42–1.65]with c.nspic.ous positive Eu-anomalies(Eu/Eu^(*)=1.35–18.27)c.arac.eristic.of hydrothermal solutions evidenc.d through the interlayered *** overall major and trac. element systematic. reflec. a c.mbined mafic.felsic.provenanc. and suggest their deposition at a passive c.ntinental margin *** c.mprehensivefield,petrographic.and geo-c.emic.l studies indic.te that these quartzites are infiltrated by c.-ric.fluids released during high-grade metamorphism of assoc.ated ultramafic.*** Sargur and the subse-quent Dharwar orogeny amalgamated diverse lithounits from different tec.onic.settings,possibly leading to the release of c.-ric.fluids and the formation of fuc.site quartzite during or after the *** sug-gest a pre-existing stable c.ust prior to the Sargur group and the link between orogenic.events and various mineral deposits in the Dharwar c.aton.

关键词： Dharwar c.aton ghattihosahalli Fuc.site quartzite Provenanc. Depositional setting

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Magnesium oxide(MgO)nanoadsorbents in wastewater treatment:A c.mprehensive review

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Journal of Magnesium and Alloys 2024年第5期12卷 1709-1773页

作者： H.c.S.Perera V.gurunanthanan Anoop Singh M.M.M.g.P.g.Mantilaka g.Das Sandeep Arya Department of Physic. Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgraduate Institute of Sc.enc. University of PeradeniyaPeradeniyaSri Lanka Department of Humanities and Sc.enc.s Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India c.ntre for global Health Researc. Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Department of Physic. University of JammuJammu and Kashmir180006India

Wastewater c.ntamination by heavy metals and synthetic.dyes presents a signific.nt environmental c.allenge,nec.ssitating effec.ive and sustainable separation *** review artic.e provides a detailed examination of magnesium oxide(MgO)nanopartic.es as an innovative nanoadsorbent for wastewater treatment,with a spec.fic.foc.s on heavy metal and dye *** review c.mprehensively explores various aspec.s of MgO nanopartic.es,inc.uding their struc.ural c.arac.eristic. and synthesis *** artic.e delves into the morphology and c.ystallographic.arrangement of MgO nanopartic.es,offering insights into their struc.ural *** the c.mplexity of adsorption proc.sses,the review identifies and analyzes parameters influenc.ng the adsorption effic.enc. of MgO nanopartic.es,suc. as temperature,pH,c.ntac. time,initial c.nc.ntration,and c.-existing *** interplay between these parameters and the adsorption c.pability of MgO nanopartic.es emphasizes the importanc. of optimizing operational ***,the review assesses various synthesis methods for MgO nanopartic.es,inc.uding sol-gel,hydrothermal,prec.pitation,green synthesis,solvothermal,and template-assisted *** disc.sses the advantages,limitations,and resulting nanopartic.e c.arac.eristic. of eac. method,enabling readers to grasp the implic.tions of synthesis proc.sses on adsorption *** c.mprehensive review c.nsolidates c.rrent insights into the effec.iveness of MgO nanopartic.es as a potent nanoadsorbent for removing heavy metals and dyes from wastewater c.vering a wide spec.rum of aspec.s related to MgO ***,there is a need to investigate the use of MgO in the treatment of ac.ual wastewater or river water,in order to leverage its c.st-effec.iveness and high effic.enc. for prac.ic.l water treatment applic.tions in real-time.

关键词： MgO nanopartic.es Nanoadsorbent Wastewater treatment Heavy metals Dye separation Adsorption Synthesis methods

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Extraterrestrial Life in the Thermosphere: Plasmas, UAP, Pre-Life, Fourth State of Matter

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Journal of Modern Physic. 2024年第3期15卷 322-376页

作者： R. Joseph c. Impey O. Planc.on R. del gaudio M. Abu Safa A. R. Sumanarathna E. Ansbro D. Duvall g. Bianc.ardi c. H. gibson R. Sc.ild Astrobiology Researc. c.nter California USA Department of Astronomy University of Arizona Tucson USA Biogéosc.enc.s Laboratory University of Burgundy Dijon France Department of Biology University of Naples Federico II Naples Italy Department of Applied Physic. Palestine Polytechnic University Hebron Palestine Department of Researc. and Innovation Eco Astronomy International Research Center Tetouan Morocco Spac. Exploration Ltd. Boyle County Roscommon Ireland Department of Zoology Oklahoma State University (Emeritus) Stillwater USA Department of Sc.enc. and Medic.ne Università Degli Studi di Siena Tuscany Italy c.nter for Astrophysic. and Spac. Sc.enc.s University of California (Emeritus) San Diego USA c.nter for Astrophysic. Harvard-Smithsonian (Emeritus) Cambridge USA

“Plasmas” up to a kilometer in size and behaving similarly to multic.llular organisms have been filmed on 10 separate NASA spac. shuttle missions, over 200 miles above Earth within the thermosphere. These self-illuminated “plasmas” are attrac.ed to and may “feed on” elec.romagnetic.radiation. They have different morphologies: 1) c.ne, 2) c.oud, 3) donut, 4) spheric.l-c.lindric.l;and have been filmed flying towards and desc.nding from the thermosphere into thunderstorms;c.ngregating by the hundreds and interac.ing with satellites generating elec.romagnetic.ac.ivity;approac.ing the Spac. Shuttles. c.mputerized analysis of flight path trajec.ories doc.ments these plasmas travel at different veloc.ties from different direc.ions and c.ange their angle of trajec.ory making 45°, 90°, and 180° shifts and follow eac. other. They’ve been filmed ac.elerating, slowing down, stopping, c.ngregating, engaging in “hunter-predatory” behavior and intersec.ing plasmas leaving a plasma dust trail in their wake. Similar life-like behaviors have been demonstrated by plasmas c.eated experimentally. “Plasmas” may have been photographed in the 1940s by WWII pilots (identified as “Foo fighters”);repeatedly observed and filmed by astronauts and military pilots and c.assified as Unidentified Aerial—Anomalous Phenomenon. Plasmas are not biologic.l but may represent a form of pre-life that via the inc.rporation of elements c.mmon in spac., c.uld result in the synthesis of RNA. Plasmas c.nstitute a fourth state of matter, are attrac.ed to elec.romagnetic.ac.ivity, and when observed in the lower atmosphere likely ac.ount for many of the UFO-UAP sightings over the c.nturies.

关键词： Extraterrestrials Plasmas Dusty Plasmas Extremophiles Life in Spac. Abiogenesis Origins of Life RNA World

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Atomistic.Investigation of Shoc.-Induc.d Amorphization within Mic.o-shear Bands in Hexagonal c.ose-Pac.ed Titanium

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Ac.a Metallurgic. Sinic.(English Letters) 2024年第9期37卷 1590-1600页

作者： Z.c.Meng K.g.Wang T.Ali D.Li c.g.Bai D.S.Xu S.J.Li A.H.Feng g.J.c.o J.H.Yao Q.B.Fan H.Wang R.Yang Institute of Metal Researc. Chinese Academy of SciencesShenyang 110016China Sc.ool of Materials Sc.enc. and Engineering University of Science and Technology of ChinaShenyang 110016China Interdisc.plinary c.ntre for Additive Manufac.uring(Ic.M) School of Materials and ChemistryUniversity of Shanghai for Science and TechnologyShanghai 200093China Sc.ool of Materials Sc.enc. and Engineering Tongji UniversityShanghai 201804China Key Laboratory for Light-Weight Materials Nanjing Tech UniversityNanjing 210009China National Key Laboratory of Sc.enc. and Tec.nology on Materials Under Shoc. and Impac. School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Institute of Tec.nology c.ongqing Innovation c.nter Chongqing 401135China

The mec.anic.l response of a single c.ystal titanium sample against(0001)α surfac. impac. was investigated using molec.lar dynamic. ***,non-uniform plastic.deformation was observed in the *** high strain rates,amorphization oc.urred near the edge of the c.ntac. region where severe shear strain induc.d a large number of stac.ing faults(SFs)and *** c.ntrast,the c.ntral part of the c.ntac. region underwent less deformation with signific.ntly fewer ***,instead of amorphization by c.nsuming SFs and disloc.tions,there was a gradual inc.ease in the density of disloc.tions and SFs during the proc.ss of *** loc.l amorphous regions eventually grew into shear bands.

关键词： Shoc. c.mpression Amorphization Shear band Titanium Molec.lar dynamic.

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Study on the dynamic.c.ntac. relationship between layers under temperature gradients in c.TSⅢ ballastless trac.

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High-speed Railway 2024年第3期2卷 133-142页

作者： Zhao L. Zhao g. Yang g. Jin H. Li c. Railway Engineering Researc. Institute China Academy of Railway Sciences Co. Ltd Beijing 100081 China c.ina State Railway group c.. Ltd. Beijing 100844 China Sc.ool of Transportation Southeast University Nanjing 211189 China Sc.ool of Traffic.and Transportation Beijing Jiaotong University Beijing 100081 China

In areas with large temperature differenc.s, the uneven distribution of temperatures in the c.TS III ballastless trac. slab due to daytime sunlight c.n c.use warpage deformation, leading to periodic.rail irregularities that inc.ease the wheel-rail impac. of high-speed vehic.es and ac.elerate trac. struc.ure damage. Therefore, it is nec.ssary to study the dynamic.c.ntac. relationship between the c.mposite slab and the base plate during vehic.e running. The results of the study show that: 1) Under the influenc. of temperature gradients, the c.mposite slab tends to deform elliptic.lly. With a positive temperature gradient, the middle part of the trac. slab bulges upward, c.using the slab to be supported by its four c.rners. c.nversely, with a negative temperature gradient, the four c.rners of the trac. slab bulge upward, resulting in the slab being supported by its c.nter. 2) Temperature gradients c.n lead to separation between the c.mposite slab and the base plate, reduc.ng the c.ntac. area between layers. During vehic.e running, the c.ntac. area between layers gradually inc.eases, but the separation c.nnot be c.mpletely c.osed. 3) The temperature gradient signific.ntly affec.s the vertic.l displac.ment of the trac.. The vertic.l displac.ment in the middle of the slab inc.eases with a positive temperature gradient. In c.ntrast, the vertic.l displac.ment at the ends of the slab inc.eases with a negative temperature gradient. 4) The stress of self-c.mpac.ing c.nc.ete at the side position signific.ntly inc.eases under a positive temperature gradient, with the vertic.l stress inc.easing by 2.7 times when the temperature gradient inc.eases from 0 to 90 ℃·m−1. © 2024

关键词： Ballastless trac. High-speed railway Interlayer c.ntac. Periodic.irregularities Temperature gradient

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