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17篇 您的检索式:作者名="Prymak"
    题名 作者 年代 出处 被引量
1Capacitance monitoring while flex testing 显示文摘PRYMAK J D BERGENTHAL J 1995IEEE Trans Compon Pack Man A1995,18,:1
2Surge step stress testing of tantalum capacitors 显示文摘Marshall J Prymak J 2001CARTS2001,2001,:1
3Evalua- tion of the influence of recombinant human tumor necro- sis factor on adhesive ability of human fetal umbilical vein endothelial cells to K562 and L1210 cells显示文摘Barilka V A Matlan V L Prymak S V 2013Exp Oncol2013,35,4:1
4Surface Coating of NiTi Shape Memory Alloys with Calcium Phosphates by Dip-coating or Plasma-spraying-biological Characterization Examined by in vitro Testing Methods显示文摘The influence of different surface coatings of NiTi shape memory alloys was examined using in vitro testing methods. Plates of superelastic nickel-titanium shape memory alloy (NiTi) were coated with calcium phosphates (hydroxyapatite) by high-temperature plasma-spraying or by dip-coating. The biocompatibility was tested in vitro by cultivation of isolated human granulocytes and whole blood cells. As substrates, pure NiTi, plasma-spray-coated NiTi and dip-coated NiTi were used. Isolated granulocytes showed an increased adhesion to both calcium phosphate-coated NiTi samples. Compared to non-coated NiTi or dip-coated NiTi, the number of dead granulocytes adherent to plasma-sprayed surfaces was significantly increased (p<0.01). Whether the differences in apoptosis of granulocytes on dip-coated vs plasma-sprayed coatings observed are due to differences in material surface morphologies has to be analyzed in further studies. Because of the cellular interactions with the coating layers, it is likely that the results obtained are not caused by the underlying NiTi but due to the coating itself.Esenwein Stefan A Bogdanski Denise Prymak Oleg Epple Matthias Muhr Gert Kller Manfred 2005Journal of Wuhan University of Technology(Materials Science)2005,20,B12:1
5New tantalum capacitors in power supply applieations显示文摘PRYMAK J D 1998Industry Applications Conference1998,,2:1
6The Crystallization of Fluoroapatite Dumbbells from Supersaturated Aqueous Solution显示文摘Oleg Prymak Viktoriya Sokolova Thorsten Peitsch 2006Crystal Growth&Design2006,6,2:1
7New tantalum capacitors in power supply applications 显示文摘Prymak J D 1998Industry applications conference1998,2,:1
8Inhibition of PMN apoptosis after adherence to dip-coated calcium phosphate surfaces on a NiTi shape memory alloy显示文摘 ESENWEIN S A PRYMAK O 2004Biomaterials2004,25,:1
9Uniform and Pointwise Shape Preserving Approximation by ALgebraic Polynomials显示文摘Kopotun K.A Leviatan D Prymak A Shevchuk I.A 0,,:1
10Fatigue of Orthodontic Nickel-titanium (NiTi) Wires in Different Fluids under Constant Mechanical Stress显示文摘Prymak O Klocke A Kahl Nieke B et at 2004Mat Sci Eng2004,378,12:1
11Conductive polymer cathodes-the latest step in declining ESR in tantalum capacitors显示文摘PRYMAK J D 2000Applied Power Electronics Conference and Exposition2000,2,:1
12New tantalum capacitors in power supply applications 显示文摘Prymak J D 1998Industry Appl Conference1998,2,:1
13New tantalum capacitors in power supply applications显示文摘PRYMAK J D 1998Industry Applications Conference1998,2,:1
14Laser-generated high entropy metallic glass nanoparticles as bifunctional electrocatalysts显示文摘High entropy metallic glass nanoparticles(HEMG NPs)are very promising materials for energy conversion due to the wide tuning possibilities of electrochemical potentials offered by their multimetallic character combined with an amorphous structure.Up until now,the generation of these HEMG NPs involved tedious synthesis procedures where the generated particles were only available on highly specialized supports,which limited their widespread use.Hence,more flexible synthetic approaches to obtain colloidal HEMG NPs for applications in energy conversion and storage are highly desirable.We utilized pulsed laser ablation of bulk high entropy alloy targets in acetonitrile to generate colloidal carbon-coated CrCoFeNiMn and CrCoFeNiMnMo HEMG NPs.An in-depth analysis of the structure and elemental distribution of the obtained nanoparticles down to single-particle levels using advanced transmission electron microscopy(TEM),energy-dispersive X-ray spectroscopy(EDX),X-ray diffraction(XRD),and Xray photoelectron spectroscopy(XPS)methods revealed amorphous quinary and senary alloy phases with slight manganese oxide/hydroxide surface segregation,which were stabilized within graphitic shells.Studies on the catalytic activity of the corresponding carbon-HEMG NPs during oxygen evolution and oxygen reduction reactions revealed an elevated activity upon the incorporation of moderate amounts of Mo into the amorphous alloy,probably due to the defect generation by atomic size mismatch.Furthermore,we demonstrate the superiority of these carbon-HEMG NPs over their crystalline analogies and highlight the suitability of these amorphous multi-elemental NPs in electrocatalytic energy conversion.Jacob Johny Yao Li Marius Kamp Oleg Prymak Shun-Xing Liang Tobias Krekeler Martin Ritter Lorenz Kienle Christoph Rehbock Stephan Barcikowski Sven Reichenberger 2022Nano Research2022,15,6:1
15Inhibition of PMN apoptosis after adherence to dip-coated calcium phosphate surfaces on a NiTi shape memory alloy显示文摘Bogdanski D Esenwein SA Prymak O 2004Biomaterials2004,25,19:1
16Morphological characterization and in vitro biocompatibility of a porous nickel-titanium alley显示文摘Prymak O Bogdanski D Koller M 2005Biomaterials2005,26,29:1
17Multidimensional thermally-induced transformation of nest-structured complex Au-Fe nanoalloys towards equilibrium显示文摘Bimetallic nanoparticles are often superior candidates for a wide range of technological and biomedical applications owing to their enhanced catalytic,optical,and magnetic properties,which are often better than their monometallic counterparts.Most of their properties strongly depend on their chemical composition,crystallographic structure,and phase distribution.However,little is known of how their crystal structure,on the nanoscale,transforms over time at elevated temperatures,even though this knowledge is highly relevant in case nanoparticles are used in,e.g.,high-temperature catalysis.Au-Fe is a promising bimetallic system where the low-cost and magnetic Fe is combined with catalytically active and plasmonic Au.Here,we report on the in s/fi;temporal evolution of the crystalline ordering in Au-Fe nanoparticles,obtained from a modern laser ablation in liquids synthesis.Our in-depth analysis,complemented by dedicated atomistic simulations,includes a detailed structural characterization by X-ray diffraction and transmission electron microscopy as well as atom probe tomography to reveal elemental distributions down to a single atom resolution.We show that the Au-Fe nanoparticles initially exhibit highly complex internal nested nanostructures with a wide range of compositions,phase distributions,and size-depended microstrains.The elevated temperature induces a diffusion-controlled recrystallization and phase merging,resulting in the formation of a single face-centered-cubic ultrastructure in contact with a body-centered cubic phase,which demonstrates the metastability of these structures.Uncovering these unique nanostructures with nested features could be highly attractive from a fundamental viewpoint as they could give further insights into the nanoparticle formation mechanism under non-equilibrium conditions.Furthermore,the in situ evaluation of the crystal structure changes upon heating is potentially relevant for high-temperature process utilization of bimetallic nanoparticles,e.g.,during catalysis.Jacob Johny Oleg Prymak Marius Kamp Florent Calvo Se-Ho Kim Anna Tymoczko Ayman El-Zoka Christoph Rehbock Ulrich Schurmann Baptiste Gault Lorenz Kienle Stephan Barcikowski 2022Nano Research2022,15,1:0
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