Ac Susceptometer
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Construção de um susceptômetro AC e a susceptibilidade magnética de microfios amorfos recobertos por vidro / Development of an AC susceptometer and magnetic susceptibility of glass covered amorphous microwires
Glass covered microwires are materials with soft magnetic properties suitable to several technological applications, specially in magnetic sensors. The main feature of these wires, with negative magnetostriction, it is the magnetic domain structure, which are studied in several research centers. In this work it was developed an AC susceptometer capable to op
Publicado em: 2010
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2. "Um biossusceptômetro supercondutor AC para quantificar o ferro hepático". / A Superconductor AC Susceptometer to Quantify Liver Iron.
This work consisted in the development of a system to measure the magnetization of large paramagnetic and diamagnetic samples. The main application was susceptometric measurements of the hepatic tissue for quantification of the iron overload. Iron excess is commonly observed in thalassemic and sickle cell anemia patients who have repeatedly received red bloo
Publicado em: 2001
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3. Construction of and auto-balanced ac suceptometer and study of eletronic conductor polymers for magnetic susceptibility and magnetic resonance. / Construção de um Susceptômetro AC Autobalanceado e Estudo de Polímeros Condutores Eletrônicos por Susceptibilidade Magnética e Ressonância Magnética.
A mutual inductance bridge which may be used for automatic measurement of ac magnetic susceptibilities from 4 K to room temperature, at frequencies up to 1 kHz, is described. The susceptometer employs an alternative and new arrangement for the probe. The coil set is kept at room temperature and moves in such a way to place the sample in the center of each of
Publicado em: 1998
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4. Susceptômetro para medidas automáticas da susceptibilidade magnpetica AC / Susceptometer for automatic measures of the AC magnetic susceptibility
Foi desenvolvido uma ponte de indutâncias mútuas, auto-balanceada, para medidas automáticas e simultâneas das partes real (x) e imaginária (x") da susceptibilidade magnética AC, na faixa de freqüências de 20 Hz e 1 KHz e temperaturas de 2K a 300K. O sistema é balanceado em um elo de realimentação digital que assegura um sinal, em fase e quadratura
Publicado em: 1992