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El Mundo de Las plantas medicinales By jose mª alarte
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Tradicionalmente,Las plantas medicinales Sirvieron como remedios para Aliviar síntomas oTratar enfermedades,con resultados dispares. El uso de las plantas para prevenir y aliviar.
LOS SECRETOS DE LOS IMANES By jose mª alarte
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Este libro proporciona una visión global, tanto técnica como práctica, de todo lo relacionado con los imanes y el magnetismo.
OVERVIEW OF CIENTIFIC AND TECNOLOGY THUST-A EUROPEAN PERSPECTIVE AND STABILITY OF NdFeB PERMANENT MAGNETS By jose mª alarte
eBook (PDF): $9.31
The influence of interstitial hydrogen on the magnetic properties of the Nd2Fe14B-type phases (where R is a particular rare earth metal) was studied extensively during the CEAM program me. Hydrogen... More > additions increased the Curie temperature and iron magnetization. The absorption process also results in the decrepitation of the bulk materials and this was exploited in the production of sintered magnets (see later). Unfonunately the anisotropy field of Nd2Fe14B at room temperature is substantially reduced so that it does not appear possible to make permanent magnets from the hydride material and it is necessary to remove the interstitial hydrogen in order to restore coercivity.< Less
EL MUNDO DE LOS IMANES By jose mª alarte
eBook (PDF): $9.13
orientación sobre imanes permanentes,características físicas y quimicas. Lo que mos proporciona una vision global,tanto técnica como practica,de todo lo relacionado con el... More > magnetismo.< Less