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Deep-water cirripedes colonizing dead shells of the cephalopod Nautilus macromphalus from New Caledonian waters

Integrative Zoology 2019年第6期14卷 561-575页

作者： j.hn BUCKERIDGE TomášKoČÍ j.n SchLÖGL Adam ToMAŠoVÝch Martina KoČoVÁVESELSKÁ Earth&oceanic Systems Group RMIT UniversityMelbourneVictoriaAustralia Ivančická581 PragueCzech Republic and Palaeontological DepartmentNatural History MuseumNational MuseumPragueCzech Republic Department of Geology and Paleontology Comenius University in BratislavaBratislavaSlovakia Institute of Earth Sciences Slovak Academy of SciencesBratislavaSlovakia Department of Paleobiology and Paleoecology Institute of Geology of the Czech Academy of SciencesPragueCzech Republic Museums Victoria MelbourneVictoriaAustralia Faculty of Science Charles University in PraguePragueCzech Republic

Fossil cephalopods are frequently encrusted by epibionts;however,determining whether encrustation occurred prior to or post-mortem to the host,and whether the final environment of deposition corresponds to the habitat of encrustation is *** present paper describes cirripede epibionts,their calcareous bases and their attachment scars on 6 post-mortem shells of Nautilus macromphalus,collected from deep water off New Cale*** cirripedes have left both cemented calcareous bases of Hexelasma and scars associated with bioerosion and discoloration produced by verrucomorph *** cirripedes included a Metaverruca recta,with articulated opercular plates and organic tissue(on a shell that had been exposed on the sea floor for at least 150 years),and specimens of Hexelasma velutinum,one of which was partly attached to an internal surface of a *** disposition of verrucomorphs indicates that most Nautilus shells were colonized post-mortem rather than during a floating ***,as cirripedes are known to have colonized living Nautilus,some Hexelasma,preserved only as calcareous eroded bases,may represent specimens that settled on a living *** degree of bioerosion and discoloration induced by verrucomorph barnacles varies according to the surface preservation of Nautilus shells,with deeper and discolored traces preserved on old and degraded *** made by verrucomorphs described here are ellipsoidal and a new ich.otaxon,Anellusichnus ellipticus,is proposed to accommodate ***,verrucomorphs and other cirripede taxa with membranous bases that were attached to pristine shells may not leave any substantial scars,and,thus,will be difficult to detect in the fossil record.

关键词： Anellusichnus ellipticus isp.nov cirripedes epibionts Hexelasma velutinum Metaverruca recta

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Further investigation on the fusion of ^(6)Li with ^(209)Bi target at near-barrier energies

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chinese Physics C 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 M.R.Cortes 胡世鹏钱建强 D.Mengoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 j.j.Valiente-Dobón D.Testov M.Mazzocco A.Gozzelino C.Parascandolo D.Pierroutsakou M.La Commara A.Goasduff D.Bazzacco D.R.Napoli F.Galtarossa F.Recchia A.Illana S.Bakes I.Zanon S.Aydin G.de Angelis M.Siciliano R.Menegazzo S.M.Lenzi j.L.Ferreira j.Rangel Serkan Akkoyun L.F.Canto j.Lubian Sch.ol of Physics Beihang UniversityBeijing 100191China Sino-French Institute of Nuclear Engineering and Tech.ology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil Institute for Advanced Study in Nuclear Energy&Safety Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Research and Manufacture of High Purity Germanium Materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPadovaItaly Dipartimento di fisica Astronomia dell'Universita di padova PadovaItaly State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China china Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Tech.ology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China INFN Laboratori Nazionali di LegnaroI-35020 LegnaroItaly INFN Sezione di NapoliI-80126 NapoliItaly Dipartimento di Farmacia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Department of Natural and Mathematical Sciences Faculty of EngineeringTarsus University33480 MersinTurkiye Physics Division Argonne National LaboratoryLemont-ILUSA Departamento de Matemaética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The complete and incomplete fusion cross sections for ^(6)Li+^(209)Bi were measured using the in-beamγ-ray method around the Coulomb *** cross sections of(deuteron captured)incomplete fusion(ICF)products were re-quantified experimentally for this reaction *** results reveal that the ICF cross section is equivalent to that of complete fusion(CF)above the Coulomb barrier and dominant near or below the Coulomb barrier.A theoretical calculation based on the continuum discretized coupled channel(CDCC)method was performed for the aforementioned CF and ICF cross sections;the result is consistent with the *** universal fusion function(UFF)was also compared with the measured CF cross section for different barrier parameters,demonstrating that the CF suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process.

关键词： cross section incomplete fusion suppression factor weakly bound nuclei

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Adaptive Signal Enhancement Unit for EEG Analysis in Remote Patient Care Monitoring Systems

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Computers, Materials & Continua 2021年第5期67卷 1801-1817页

作者： ch.Srinivas K.chandrabhushana Rao Department of Electronics and Communication Engineering J.N.T.UniversityKakinada533003India Department of Electronics and Communication Engineering JNTUK-UCEVVizianagaram535003India

In this paper we propose an efcient process of physiological artifact elimination methodology from brain waves(BW),which are also commonly known as electroencephalogram(EEG)*** a clinical environment during the acquisition of BW several artifacts contaminates the actual BW *** leads to inaccurate and ambiguous *** the statistical nature of the EEG signal is more non-stationery,adaptive ltering is the more promising method for the process of artifact *** clinical conditions,the conventional adaptive techniques require many numbers of computational operations and leads to data samples overlapping and instability of the algorithm *** causes delay in diagnosis and decision *** overcome this problem in our work we propose to set a threshold value to diminish the problem of round off *** resultant adaptive algorithm based on this strategy is Non-linear Least mean square(NL2MS)***,to improve this algorithm in terms of ltering capability we perform data normalization,using this algorithm several hybrid versions are developed to improve ltering and reduce computational *** the method,a new signal enhancement unit(SEU)is realized and performance of various hybrid versions of algorithms examined using real EEG signals recorded from the *** ability of the proposed schemes is measured in terms of convergence,enhancement and multiplications *** various SEUs,the MCN2L 2MS algorithm achieves 14.6734,12.8732,10.9257,15.7790 dB during the artifact removal of RA,EMG,CSA and EBA components with only two ***,this algorithm seems to be better candidate for artifact elimination.

关键词： Adaptive algorithms artifacts brain waves clipped algorithms signal enhancement unit wireless EEG monitoring

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In vivo and in vitro study of resorbable magnesium wires for medical implants:Mg purity,surface quality,Zn alloying and polymer coating

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j.urnal of Magnesium and Alloys 2024年第6期12卷 2472-2488页

作者： K.Tesar j.Luňácková M.j.x M.Žaloudková R.Vrbová M.Bartoš P.Klein L.Vištej.ová j.Dušková E.Filová Z.Sucharda M.Steinerová S.Habr K.Balík A.Singh Department of Materials Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueTrojanova 13Prague 12000Czech Republic Institute of Physics Czech Academy of SciencesNa Slovance 2Prague 18221Czech Republic Institute of Dental Medicine First Faculty of MedicineCharles University and General University Hospital in PragueKaterinská32Prague 12801Czech Republic Department of Physics Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueBrehová7Prague 11519Czech Republic Department of Composites and Carbon Materials Institute of Rock Structure and MechanicsCzech Academy of SciencesV Holešovickách 41Prague 18209Czech Republic Institute of Anatomy First Faculty of MedicineCharles UniversityU Nemocnice 3Prague 12800Czech Republic Biomedical Center Faculty of Medicine in PilsenCharles UniversityAlej Svobody 76Pilsen 32300Czech Republic Department of Pathological Physiology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Department of Histology and Embryology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic Institute of Pathology First Faculty of MedicineCharles University and General University Hospital in PragueStudnickova 2Prague 12800Czech Republic Department of Biomaterials and Tissue Engineering Institute of PhysiologyCzech Academy of SciencesVidenska 1083Prague 14200Czech Republic Research Center for Structural Materials National Institute for Materials Science1-2-1 SengenTsukuba 305-0047Japan

Magnesium is an excellent material in terms of biocompatibility and its corrosion products can serve as an active source for new bone ***,localized corrosion and H_(2)generation limit the potential of Mg-based *** low-alloyed Mg-Zn wires can strongly reduce problems with large H_(2)bubbles and improve the mechanical properties considerably while maintaining excellent long-term *** pickling and a polymer coating can be effectively used to lower the rate of in vivo *** this work,microstructural,mechanical,and in vitro characterization of 250μm and 300μm extruded wires made from ultra-pure Mg,commercially pure Mg,Mg-0.15Zn,Mg-0.4Zn and Mg-1Zn was ***,Mg-0.4Zn wires together with a variant coated with a copolymer of L-lactide andε-caprolactone were tested in vivo on artificially damaged Wistar rat *** on the observed Mg-induced osteogenesis,polymer-coated Mg wires with a small addition of Zn are a perspective material for bone-support applications,such as cerclage and fixation wires.

关键词： Magnesium Resorbable Mg wire Mg-Zn implant degradation Biocompatibility study Zn grain boundary segregation

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Basins of Attraction in the Copenhagen Problem Where the Primaries Are Magnetic Dipoles

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Applied Mathematics 2012年第6期3卷 541-548页

作者： Tilemachos j. Kalvouridis Maria ch. Gousidou-Koutita Department of Mathematics Faculty of Sciences Aristotle University of Thessaloniki Thessaloniki Greece Department of Mechanics Faculty of Applied Sciences National Technical University of Athens Athens Greece

We deal with the Copenhagen problem where the two big bodies of equal masses are also magnetic dipoles and we study some aspects of the dynamics of a charged particle which moves in the electromagnetic field produced by the primaries. We investigate the equilibrium positions of the particle and their parametric variations, as well as the basins of attraction for various numerical methods and various values of the parameter λ.

关键词： Copenhagen Problem with Magnetic Dipoles Equilibrium Locations Basins of Attraction Solution of Non-Linear Algebraic Systems Newton and Quasi-Newton Methods Comparison of Numerical Methods

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Greenhouse gas emissions during co-composting of cattle feedlot manure with construction and demolition （C＆D） waste

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Frontiers of Environmental Science & Engineering 2017年第3期11卷 141-152页

作者： Xiying Hao Francis j. Larney Agriculture and Agri-Food Canada Lethbridge Research and Development Centre Lethbridge Alberta T1J 4B1 Canada

Manure management strategies should reflect current animal feeding practices and encourage recycling of organic waste to help protect our environment. This research investigated greenhouse gas （GHG） emissions during cattle manure stockpiling or composting with and without construction and demolition （C＆D） waste. Manure was collected from cattle fed a typical finishing diet （CK manure） and from cattle on diets which included 30% dried distillers grains with solubles （DG manure）. The CK and DG manures were co-composted with （4：1） C＆D waste （treatments： CK CD, DG CD）, composted alone （treatments： CK and DG） in 13 m3 bins or stockpiled without C＆D ~vaste （treatments： CK ST and DGST） for 99 days. Manure type （CK vs. DG manure） had no effect on GHG emissions-over the 99 day manure composting or stockpiling. Composting with C＆D waste 2 produced similar Co2 emissions, about double that from manure stockpthng （7.9 kgC.m^-2）. In contrast, ch4 emissions were reduced by the inclusion of C＆D waste （64 gC.m^-1 with C＆D vs. 244 gC.m 2 without C＆D） while the manure stockpile emitted the greatest amount of ch4 （464 gC. m 2）. Additionally, only 0.48% of C was emitted in ch4 form with C＆D waste, compared to 1.68% when composting without C＆D waste and 7.00% when cattle manure was stockpiled. The N2o emissions （12.4 to 18.0 gN.m ） were similar across all treatments. The lower ch4 emissions with C＆D waste are beneficial in reducing overall GHG emissions from manure composting, while reducing the amount of material entering landfills.

关键词： Livestock manuregreenhouse gas fluxstraw bale compost binN2o ch4 Co2

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Direct observation of longitudinal aberrated wavefields

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Photonics Research 2023年第6期11卷 1015-1020页

作者： j.P.TREVINo V.CoELLo A.j.IMES-NÁj.RA C.E.GARCIA-oRTIZ S.chÁVEZ-CERDA j.E.GÓMEZ-CoRREA Tecnológico de Monterrey School of Engineering and SciencesMonterrey NL 64849Mexico Universidad Politécnica de Puebla CuanaláPuebla 72640Mexico Centro de Investigación Científica y de Educación Superior de Ensenada Unidad MonterreyApodaca NL 66629Mexico Instituto Nacional de Astrofísica Óptica y ElectrónicaCoordinación deÓpticaTonantzintla Puebla 72840Mexico

Rather than focusing on a focal spot,aberrated wavefields spread out over a *** a wave phenomenon,optical aberrations are analyzed in terms of waves propagating in the 3D *** this work,we report the observation of 2D longitudinal aberrated *** observation can be visualized by mapping the intensity distributions of surface plasmon polaritons(SPPs)that propagate on a metal/air interface using leakage radiation *** orientation of the SPP beam is tweaked by tilting and translating the system to mimic aberrated beams,presenting known Seidel terms:defocus,spherical,coma,and tilt *** approach allows the examination of the longitudinal evolution of aberrated beams in a visual and rapid manner,in contrast to more complicated post-processing reconstructions.

关键词： space wave fields

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Meyer-Neldel Rule in Plasma Polythiophene Thin Films

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open j.urnal of Polymer chemistry 2014年第3期4卷 31-37页

作者： j. Cuauhtemoc Palacios M. Guadalupe olayo Guillermo j. Cruz j. A. chávez-Carvayar Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Facultad de Ingeniería Universidad Autónoma del Estado de México Toluca México.

In polymers, the electronic activation energy depends on the fragmentation, crosslinking, dopants, moisture and in general on the structure-environment interaction. This has a special importance in plasma polymers because fragmentation and crosslinking are usually higher than in other polymers. In this work, DC electrical conductivity of polythiophene thin films prepared by plasma (pPTh) was studied using the Meyer-Neldel (MN) rule to calculate the characteristic MN energy and temperature as a function of moisture and metallic dopants. The experimental data for pPTh synthesized in different conditions indicated that EM = 32 meV and TM = 373 K, suggesting a thermally activated conduction mechanism;however, in polymer-metal matrices with metal concentration higher than the percolation threshold, the conduction mechanism is different causing that the MN rule was only partially fulfilled. The congruence of the experimental data with the multiexcitation entropy model is discussed.

关键词： Polythiophene Plasma Conductivity Meyer-Neldel Rule Multi-Excitation Entropy Model

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Variation of ch_4 concentrations recorded in Dunde ice core bubbles

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chinese Science Bulletin 1999年第4期44卷 383-384页

作者： j. chappellaz Laboratoire de Glaciologie et Geophysique de I'Environnement Centre National de la Recherche Scientifique

GREENHoUSE gases such as ch4 in the ancient atmospheric concentration can be reconstructed by extracting and analyzing the gases trapped in polar ice core bubbles. It is a new attempt to extract and analyze the ch4 concentration in Dunde ice core for the study of mountain glacier. Samples were taken from the about 140-m ice core drilled in 1987 in Dunde ice cap in Qilian Mountain. The ice core has been well preserved in cold room. 12 samples were taken from the upper 95 m, and cut to 15 cm in length and 5cm in diameter. ch4 concentrations were measured in CNRS Laboratory of Glaciology, Grenoble, France.

关键词： core Variation of ch4 concentrations recorded in Dunde ice core bubbles ch

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Mechanical characterization and induced crystallization in nanocomposites of thermoplastics and carbon nanotubes

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npj.Computational Materials 2020年第1期6卷 413-423页

作者： Eduardo R.Cruz-chú Gonzalo j.Villegas-Rodríguez Tobias j.ger Luca Valentini Nicola M.Pugno Konstantinos Gkagkas Frauke Gräter Laboratorios de Investigación y Desarrollo Facultad de Ciencias y FilosofíaUniversidad Peruana Cayetano HerediaLimaPeru Molecular Biomechanics Group Heidelberg Institute for Theoretical StudiesHeidelbergGermany Civil and Environmental Engineering Department University of Perugia and INSTM Research UnitTerniItaly Laboratory of Bio-inspired BionicNanoMeta Materials MechanicsUniversity of TrentoTrentoItaly Sch.ol of Engineering and Materials Science Queen Mary University of LondonLondonUK Advanced Tech.ology Group Toyota Motor EuropeZaventemBelgium Interdisciplinary Center for Scientific Computing(IWR) Heidelberg UniversityHeidelbergGermany

Nanocomposites built from polymers and carbon nanotubes(CNTs)are a promising class of *** modeling can provide nanoscale views of the polymer–CNT interface,which are much needed to foster the manufacturing and development of such ***,setting up periodic nanocomposite models is a challenging *** we propose a computational workflow based on Molecular Dynamics simulations.

关键词： materials composites crystallization

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