Results 21 to 30 of about 3,947 (205)

Sobre a condenação do magnetismo animal: revisitando a história da psicologia [PDF]

open access: yesPsicologia: Teoria e Pesquisa
O presente trabalho procura desenvolver uma reflexão crítica sobre o processo de condenação do magnetismo animal. Partindo de uma crítica às versões lineares e progressistas da história da Psicologia, nas quais o magnetismo é excluído ou pouco explorado,
Maurício da Silva Neubern
doaj   +2 more sources

Metallic Magnetic Nanoparticles

open access: yesThe Scientific World Journal, 2005
In this paper, we reviewed some relevant aspects of the magnetic properties of metallic nanoparticles with small size (below 4 nm), covering the size effects in nanoparticles of magnetic materials, as well as the appearance of magnetism at the nanoscale ...
A. Hernando, P. Crespo, M. A. García
doaj   +2 more sources

Bosquejo Histórico de Electro-magnetismo

open access: yesEpistemología e Historia de la Ciencia
El presente documento muestra el escenario científico que se configuró a partir de la publicación de los resultados del experimento de la aguja de Hans Christian Ørsted.
Rodrigo Andrés Bautista Rincón   +1 more
doaj   +2 more sources

Development of an In Vivo Sensor to Monitor the Effects of Vapour Pressure Deficit (VPD) Changes to Improve Water Productivity in Agriculture [PDF]

open access: yesSensors, 2019
Environment, biodiversity and ecosystem services are essential to ensure food security and nutrition. Managing natural resources and mainstreaming biodiversity across agriculture sectors are keys towards a sustainable agriculture focused on resource ...
Filippo Vurro   +6 more
doaj   +2 more sources

Magnetismo Cósmico [PDF]

open access: yes
O magnetismo é parte de uma interação fundamental da Natureza que, por exemplo, inclui fenómenos de atração e de repulsão entre materiais. Na realidade, o magnetismo e a eletricidade estão profundamente relacionados entre si, e as observações e estudos ao longo de anos permitiram construir a sua base teórica do eletromagnetismo, sendo disso exemplos ...
Gomes, Cláudio, Lima, Maria Margarida
openaire   +2 more sources

Boosting the Tunable Microwave Scattering Signature of Sensing Array Platforms Consisting of Amorphous Ferromagnetic Fe2.25Co72.75Si10B15 Microwires and Its Amplification by Intercalating Cu Microwires

open access: yesNanomaterials, 2021
The following work addresses new configurations of sensing array platforms that are composed of Co-based amorphous ferromagnetic microwires (MWs) to obtain an enhanced modulation of the microwave scattering effects through the application of low strength
Diego Archilla   +4 more
doaj   +1 more source

Defect‐Engineering by Solvent Mediated Mild Oxidation as a Tool to Induce Exchange Bias in Metal Doped Ferrites

open access: yesSmall Methods, Volume 7, Issue 11, November 16, 2023., 2023
Inducing defects in the crystal lattice is a promising strategy for tuning chemical‐physical properties of nanoparticles (NPs). The introduction of lattice defects in substituted spinel ferrite NPs, performed by mild oxidation, allows to induce magnetic features that cannot be otherwise observed when the same nanomaterials are obtained by standard ...
Beatrice Muzzi   +10 more
wiley   +1 more source

Detecting Magnetic Permeability and Electrical Conductivity Fluctuations in Metallic Ferromagnetic Sheets through the Shielding Effect

open access: yesphysica status solidi (b), Volume 259, Issue 6, June 2022., 2022
Herein, a method for fast detection of fluctuations in structural and functional properties in metallic elements is presented. A particular application of mechanical stress in steel rail tracks is included. In this report, a method is proposed for determining the fluctuations of physical and structural properties in metallic ferromagnetic samples by ...
Antonio Hernando   +7 more
wiley   +1 more source

Further Evidence of High Intensity During the Levantine Iron Age Anomaly in Southwestern Europe: Full Vector Archeomagnetic Dating of an Early Iron Age Dwelling From Western Spain

open access: yesJournal of Geophysical Research: Solid Earth, Volume 126, Issue 9, September 2021., 2021
Abstract We report an archeomagnetic study from the Early Iron Age archeological site of Cerro de San Vicente (Salamanca, Spain). The studied materials were sampled from one roundhouse and its central fireplace, a surrounding burnt floor, and slags with a twofold objective.
N. García‐Redondo   +9 more
wiley   +1 more source

Home - About - Disclaimer - Privacy