نتایج جستجو برای: static magnetic field

تعداد نتایج: 1138655  

Journal: :Current Biology 2011
Dale C. Roberts Vincenzo Marcelli Joseph S. Gillen John P. Carey Charles C. Della Santina David S. Zee

Vertigo in and around magnetic resonance imaging (MRI) machines has been noted for years [1, 2]. Several mechanisms have been suggested to explain these sensations [3, 4], yet without direct, objective measures, the cause is unknown. We found that all of our healthy human subjects developed a robust nystagmus while simply lying in the static magnetic field of an MRI machine. Patients lacking la...

2017
Xi Li Yves Fautrelle Zhongming Ren Rene Moreau

Understanding the macrosegregation formed by applying magnetic fields is of high commercial importance. This work investigates how static magnetic fields control the solute and primary phase distributions in four directionally solidified alloys (i.e., Al-Cu, Al-Si, Al-Ni and Zn-Cu alloys). Experimental results demonstrate that significant axial macrosegregation of the solute and primary phases ...

Journal: :Neuromodulation : journal of the International Neuromodulation Society 2014
Casto Rivadulla Guglielmo Foffani Antonio Oliviero

OBJECTIVE The application of transcranial static magnetic field stimulation (tSMS) in humans reduces the excitability of the motor cortex for a few minutes after the end of stimulation. However, when tSMS is applied in humans, the cortex is at least 2 cm away, so most of the strength of the magnetic field will not reach the target. The main objective of the study was to measure the strength and...

Journal: :BioRisk 2022

Background : Recognising effects of static magnetic field (SMF) varying flux density on flora and fauna is attempted. For this purpose, the influence upon molecules lower alkanols i.e. methanol, ethanol, propan-1-ol, propan-2-ol, butan-1-ol, S -butan-2-ol, isobutanol tert -butanol studied. Methods Computations effect real SMF 0.0, 0.1, 1, 10 100 AFU (Arbitrary Field Unit; here 1AFU > 100...

Journal: :journal of advanced medical sciences and applied technologies 0
ali dadras ibb, tehran university deyhim atarod ibb, tehran university ali afrasiabi ibb, tehran university atiye liaghi ibb, tehran university ali naghshineh ibb, tehran university gholam hossein riazi ibb, tehran university

recently, the hypothesis in which memory and information would be stored as magnetic forms in astrocytes is expanding and neuromagnetic interactions between neurons and neighboring astrocytes in neocortex have potential to be the basis of memory formation. it has been proposed that all sorts of information may be maintained in form of neuronal activity-associated magnetic fields (naamfs) and th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
J M Denegre J M Valles K Lin W B Jordan K L Mowry

Early cleavages of Xenopus embryos were oriented in strong, static magnetic fields. Third-cleavage planes, normally horizontal, were seen to orient to a vertical plane parallel with a vertical magnetic field. Second cleavages, normally vertical, could also be oriented by applying a horizontal magnetic field. We argue that these changes in cleavage-furrow geometries result from changes in the or...

2002
Yoshio Sakaguchi

Static and alternating magnetic field effects are introduced from the viewpoint of radical-radical interaction. Since the effect of magnetic field is much smaller than that of the electric field, the magnetic field dependence is a very sensitive measurement of the interaction between radicals. The low-field peak on the magnetic field effects and the spin-correlated radical pair polarization of ...

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