نتایج جستجو برای: magnetic support

تعداد نتایج: 986651  

Journal: :Physical review letters 2013
F Donati Q Dubout G Autès F Patthey F Calleja P Gambardella O V Yazyev H Brune

We report on the magnetic properties of single Co atoms on graphene on Pt(111). By means of scanning tunneling microscopy spin-excitation spectroscopy, we infer a magnetic anisotropy of K=-8.1  meV with out-of-plane hard axis and a magnetic moment of 2.2μ(B). Co adsorbs on the sixfold graphene hollow site. Upon hydrogen adsorption, three differently hydrogenated species are identified. Their ma...

2011

A magnetic bearing is a bearing which supports a load using magnetic levitation. Magnetic bearings support moving machinery without physical contact, for example, they can levitate a rotating shaft and permit relative motion without friction or wear. In active magnetic bearings (AMB) a stable equilibrium is achieved by means of one or more control loops. The use of control loop for maintaining ...

Journal: :Catalysts 2021

Core-shell materials are promising functional for fundamental research and industrial application, as their properties can be adapted specific applications. In particular, particles featuring iron or oxide core material relevant since they combine magnetic catalytic properties. The addition of an SiO2 shell around the introduces additional design aspects, such a pore structure surface functiona...

Journal: :Acta neurologica Taiwanica 2010
Shang-Chang Ho Huey-Juan Lin Yu-Kun Tsui Poh-Shiow Yeh

PURPOSE In a case with moyamoya disease, we found the magnetic resonance image and magnetic angiographic studies were helpful for the definite diagnosis of the disease. CASE REPORT A young adult presented limb-shaking transient ischemic attacks caused by moyamoya disease. The magnetic resonance angiography proved the steno-occlusive lesions in the major arteries of circle of Willis, and the m...

Journal: :Science 2006
Josep M Girart Ramprasad Rao Daniel P Marrone

We report high-angular-resolution measurements of polarized dust emission toward the low-mass protostellar system NGC 1333 IRAS 4A. We show that in this system the observed magnetic field morphology is in agreement with the standard theoretical models of the formation of Sun-like stars in magnetized molecular clouds at scales of a few hundred astronomical units; gravity has overcome magnetic su...

Journal: :پژوهش های زراعی ایران 0
محمد حسن راشد محصل اکبر علی وردی

in order to compare effect of magnetic field and frigate surfactant to enhance the efficacy of iodosulfuron-methyl-sodium plus mesosulfuron-methyl (chevalier) to control wild oat, a greenhouse experiment of dose-response was conducted. treatments were 0, 3, 6, 12, 18 and 24 doses g a.i. ha-1 of chevalier (i) without treatment, (ii) with frigate % 0.1 v/v, (iii) with magnetic field, and (iv) fri...

Journal: :مکانیک سیالات و آیرودینامیک 0
امین حدیدی محمدرضا انصاری

in this study, the effects of strength and direction of the magnetic field on lid-driven cavity flow in the whole range of magnetic field strength variations, which already used in practice up to present (0 to 10 tesla), are studied. the governing equations, including conservative equations of momentum, continuity and magnetic field equations were solved numerically. momentum and continuity equ...

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