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1INTERFACE REACTION IN MAGNETIC MULTILAYERS显示文摘Ta/NiO/NiFe/Ta multilayers were prepared by rf reactive and dc magnetron sputtering. The exchange coupling field (Hex) between NiO and NiFe reached 120Oe. The composition and chemical states at the interface region of NiO/NiFe were studied using the x-ray photoelectron spectroscopy (XPS) and peak decomposition technique. The results show that there are two thermodynamically favorable reactions at NiO/NiFe interface: NiO+Fe=Ni+FeO and 3NiO+2Fe = 3Ni+Fe2O3. The thickness of the chemical reaction as estimated by angle-resolved XPS was about 1-1.5nm. These interface reaction products are magnetic defects, and we believe that the Hex and the coercivity (Hc) of NiO/NiFe are affected by these defects. Moreover, the results also show that there is an 'intermixing layer' at the Ta/NiO (and NiO/Ta) interface due to a thermodynamically favorable reaction: 2Ta+5NiO=5Ni+ Ta2O5. This interface reaction has an effect on the exchange coupling as well. The thickness of the 'intermixing layer' as estimated by XPS depth-profiles was about 8-10nm.G.H. Yu, M.H Li, F. W Zhu, X.F. Cui and J.L. Jin ( Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China) ( State key laboratory for Advanced Metals and Materials, University of Science and Technology Beijing 2001Acta Metallurgica Sinica(English Letters)2001,14,6:47
2Decomposition of maize straw in three European soils as revealed by DRIFT spectra of soil particle fractions显示文摘R Spaccini A Piccolo G Haberhauer M Stemmer M.H Gerzabek 2001Geoderma2001,,3:2
3Ecological restoration of mine degraded soils, with emphasis on metal contaminated soils显示文摘M.H Wong 2002Chemosphere2002,,6:2
4四象限开关电容DC/DC罗氏变换器显示文摘经典的DC/DC变换器,如Buck变换器,Boost变换器,Buck-Boost变换器,罗氏变换器和Cuk变换器,通常都是由电感和电容组成,所以它们的尺寸大且功率密度低。开关电容已被成功地应用于无感DC/DC变换器中,开拓了设计高功率密度变换器的方法。然而,在文献中已有的多数变换器都是单象限运行。其中一些变换器工作在推挽状态下,它们的控制电路和拓朴是很复杂的。本文介绍一种四象限开关电容DC/DC罗氏变换器。文中的分析和计算已得到试验测试结果的验证。罗方林 叶虹 Rashid M.H 1999电源技术应用1999,2,3:2
5The East Anatolia-Lesser Caucasus ophiolite:An exceptional case of large-scale obduction,synthesis of data and numerical modelling显示文摘We present new,geological,metamorphic,geochemical and geochronological data on the East Anatolian-Lesser Caucasus ophiolites.These data are used in combination with a synthesis of previous data and numerical modelling to unravel the tectonic emplacement of ophiolites in this region.All these data allow the reconstruction of a large obducted ophiolite nappe,thrusted for>100 km and up to 250 km on the Anatolian-Armenian block.The ophiolite petrology shows three distinct magmatic series,highlighted by new isotopic and trace element data:(1)The main Early Jurassic Tholeiites(ophiolite s.s.)bear LILEenriched,subduction-modified,MORB chemical composition.Geology and petrology of the Tholeiite series substantiates a slow-spreading oceanic environment in a time spanning from the Late Triassic to the Middle-Late Jurassic.Serpentinites,gabbros and plagiogranites were exhumed by normal faults,and covered by radiolarites,while minor volumes of pillow-lava flows infilled the rift grabens.Tendency towards a subduction-modified geochemical signature suggests emplacement in a marginal basin above a subduction zone.(2)Late Early Cretaceous alkaline lavas conformably emplaced on top of the ophiolite.They have an OIB affinity.These lavas are featured by large pillow lavas interbedded a carbonate matrix.They show evidence for a large-scale OIB plume activity,which occurred prior to ophiolite obduction.(3)Early-Late Cretaceous calc-alkaline lavas and dykes.These magmatic rocks are found on top of the obducted nappe,above the post-obduction erosion level.This series shows similar Sr-Nd isotopic features as the Alkaline series,though having a clear supra-subduction affinity.They are thus interpreted to be the remelting product of a mantle previously contaminated by the OIB plume.Correlation of data from the Lesser Caucasus to western Anatolia shows a progression from back-arc to arc and fore-arc,which highlight a dissymmetry in the obducted oceanic lithosphere from East to West.The metamorphic P-T-t paths of the obduction sole lithologies define a southward propagation of the ophiolite:(1)P-T-t data from the northern Sevan-Akera suture zone(Armenia)highlight the presence and exhumation of eclogites(1.85±0.02 GPa and 590±5℃)and blueschists below the ophiolite,which are dated at ca.94 Ma by Ar-Ar on phengite.(2)Neighbouring Amasia(Armenia)garnet amphibolites indicate metamorphic peak conditions of 0.65±0.05 GPa and 600±20 C with a U-Pb on rutile age of 90.2±5.2 Ma and Ar-Ar on amphibole and phengite ages of 90.8±3.0 Ma and 90.8±1.2 Ma,respectively.These data are consistent with palaeontological dating of sediment deposits directly under(Cenomanian,i.e.>93.9 Ma)or sealing(Coniacian-Santonian,i.e.,≤89.8 Ma),the obduction.(3)At Hinis(NE Turkey)PT-t conditions on amphibolites(0.66±0.06 GPa and 660±20℃,with a U-Pb titanite age of80.0±3.2 Ma)agree with previous P-T-t data on granulites,and highlight a rapid exhumation below a top-to-the-North detachment sealed by the Early Maastrichtian unconformity(ca.70.6 Ma).Amphibolites are cross-cut by monzonites dated by U-Pb on titanite at 78.3±3.7 Ma.We propose that the HT-MP metamorphism was coeval with the monzonites,about 10 Ma after the obduction,and was triggered by the onset of subduction South of the Anatolides and by reactivation or acceleration of the subduction below the Pontides-Eurasian margin.Numerical modelling accounts for the obduction of an'old'~80 Myr oceanic lithosphere due to a significant heating of oceanic lithosphere through mantle upwelling,which increased the oceanic lithosphere buoyancy.The long-distance transport of a currently thin section of ophiolites(<1 km)onto the Anatolian continental margin is ascribed to a combination of northward mantle extensional thinning of the obducted oceanic lithosphere by the Hinis detachment at ca.80 Ma,and southward gravitational propagation of the ophiolite nappe onto its foreland basin.Y.Rolland M.Hässig D.Bosch O.Bruguier R.Melis G.Galoyan G.Topuz L.Sahakyan A.Avagyan M.Sosson 2020Geoscience Frontiers2020,11,1:2
6Treatment of arrophic facial acne scars with the 1064-nm Q-switched Nd:YAG laser:Six-month follow-up study显示文摘FRIEDMAN PM JIH M.H SKOVER G.R 0,,11:1
7Do negative numbers have a place on the mental number line显示文摘Fischer M.H Rottmann J 0,,01:1
8A Change-of-Process Theory for Contextual Effects and Preference Reversals in Risky Decision Making显示文摘MeUers B.A Ordonez L.D Birnbattm M.H 0,,03:1
9Ecological restoration of mine degraded soils, with emphasis on metal contaminated soils显示文摘M.H Wong 2002Chemosphere2002,,6:1
10The response of hotel performance to international tourism development and crisis events Original Research Article显示文摘Chen M.H 0,,01:1
11Oculomotor bias induced by number perception显示文摘Fischer M.H Warlop N Hill R.L Fias W 0,,02:1
12Linguistic and Conversational Adjustments t o Non-n-ative Speakers显示文摘Long M.H 0,,05:1
13Production of 2-O-alpha-glucopyranosyl L-ascorbic acid from ascorbic acid and beta-cyclodextrin using immobilized cyclodextrin glycosyltransferase显示文摘Prousoontorn M.H Pantatan S 0,,1:1
14Managing traceability information in manufacture显示文摘M.H Jansen-Vullers C.A van Dorp A.J.M Beulens 2003International Journal of Information Management2003,,5:1
15Band gap modification of single-walled carbon nanotube and boron nitride nanotube under a transverse electric field显示文摘Chen C.W Lee M.H Clark S.J 0,,:1
16Immunonutrition in gastrointestinal surgery显示文摘Y.Cerantola M.Hübner F.Grass N.Demartines M.Sch?fer 2010Br J Surg2010,,1:1
17Polyphenols for the prevention and treatment of dementia diseases显示文摘The greatest risk factor for neurodegeneration is aging.However genetics at birth only contributes 20–25%to the determinants of lifespan,so we actually have around 75%control over how well individuals age in body and brain.Health is the real wealth and that everyone can significantly control/achieve sustainable health and quality of life through lifestyle choicesHelmut M.Hügel Neale Jackson 2015Neural Regeneration Research2015,10,11:1
18Experimental and numerical research on condenser performance for R-22 and R-407C refrigerants显示文摘J.H Lee S.W Bae K.H Bang M.H Kim 2002International Journal of Refrigeration2002,,3:1
19Influence of p -coumaric acid on doxorubicin-induced oxidative stress in rat’s heart显示文摘M.H Abdel-Wahab M.A El-Mahdy M.F Abd-Ellah G.K Helal F Khalifa F.M.A Hamada 2003Pharmacological Research2003,,5:1
20'Dividend Policy,Growth,and the Valuation of Shares'显示文摘Miller M.H Modigliani F 0,,:1
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