A treatment of the equatorial magnetic Kerr effect using the 4 × 4 matrix formalism

1994 ◽  
Vol 72 (3-4) ◽  
pp. 134-140
Author(s):  
D. J. De Smet
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Kerr Effect ◽  
Polarized Light ◽  
Jones Matrix ◽  
Matrix Formalism

Expressions for the elements of the Jones matrix describing the reflection of polarized light from a material with an applied static magnetic field directed parallel to the intersection of the plane of incidence and the plane of the surface are derived using the 4 × 4 matrix formalism.

scholarly journals A Jones matrix formalism for simulating three-dimensional polarized light imaging of brain tissue

2015 ◽  
Vol 12 (111) ◽  
pp. 20150734 ◽  
Author(s):  
M. Menzel ◽  
K. Michielsen ◽  
H. De Raedt ◽  
J. Reckfort ◽  
K. Amunts ◽  
...  
Keyword(s):  
Myelin Sheath ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Polarized Light ◽  
Microscopic Model ◽  
Macroscopic Model ◽  
Jones Matrix ◽  
Matrix Formalism ◽  
Nerve Fibres ◽  
Polarized Light Imaging

The neuroimaging technique three-dimensional polarized light imaging (3D-PLI) provides a high-resolution reconstruction of nerve fibres in human post-mortem brains. The orientations of the fibres are derived from birefringence measurements of histological brain sections assuming that the nerve fibres—consisting of an axon and a surrounding myelin sheath—are uniaxial birefringent and that the measured optic axis is oriented in the direction of the nerve fibres (macroscopic model). Although experimental studies support this assumption, the molecular structure of the myelin sheath suggests that the birefringence of a nerve fibre can be described more precisely by multiple optic axes oriented radially around the fibre axis (microscopic model). In this paper, we compare the use of the macroscopic and the microscopic model for simulating 3D-PLI by means of the Jones matrix formalism. The simulations show that the macroscopic model ensures a reliable estimation of the fibre orientations as long as the polarimeter does not resolve structures smaller than the diameter of single fibres. In the case of fibre bundles, polarimeters with even higher resolutions can be used without losing reliability. When taking the myelin density into account, the derived fibre orientations are considerably improved.

The Influence of a Static Magnetic Field on the Optical Properties of Chiral Molecules

1984 ◽  
Vol 39 (3) ◽  
pp. 254-261 ◽  
Author(s):  
G. Wagnière
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Optical Properties ◽  
Static Magnetic Field ◽  
Incident Light ◽  
Polarized Light ◽  
Chiral Molecule ◽  
Chiral Molecules ◽  
Small Shift ◽  
Incident Light Beam

AbstractA static magnetic field parallel to the direction of propagation of an incident light beam causes a small shift in the value of the refractive index and, correspondingly, of the absorption coefficient of a chiral molecule. This shift is opposite for enantiomers. However, it occurs for arbitrarily polarized light and is therefore not a circular differential effect.

Decreased chemotaxis of human peripheral phagocytes exposed to a strong static magnetic field

2004 ◽  
Vol 91 (1) ◽  
pp. 59-65 ◽  
Author(s):  
S Sipka ◽  
I Szöllősi ◽  
Gy Batta ◽  
Gy Szegedi ◽  
Á Illés ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field

Intense Static Magnetic Field Induced Bone Growth in Vivo

1984 ◽  
Vol 3 (1) ◽  
pp. 223-234
Author(s):  
Frank Papatheofanis ◽  
Bill Fapatheofanls ◽  
Robert Ray
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Bone Growth

ABOUT UNIFORMITY OF THE PHENOMENOLOGY AND THE MATHEMATICAL DESCRIPTION OF SO-CALLED « JOINED» ACTION OF HAZARDS AND COMBINED TOXICITY (ON THE EXAMPLE OF A COMBIBATION OF THE FLUORIDE AND THE STATIC MAGNETIC FIELD)

2016 ◽  
pp. 13-20
Author(s):  
B. A. Katsnelson ◽  
M. P. Sutunkova ◽  
N. A. Tsepilov ◽  
V. G. Panov ◽  
A. N. Varaksin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Point Of View ◽  
Whole Body ◽  
Surface Model ◽  
Combined Toxicity ◽  
Fluoride Solution ◽  
Adverse Action ◽  
Biochemical Indices ◽  
And Control

Sodium fluoride solution was injected i.p. to three groups of rats at a dose equivalent to 0.1 LD50 three times a week up to 18 injections. Two out of these groups and two out of three groups were sham-injected with normal saline and were exposed to the whole body impact of a 25 mT static magnetic field (SMF) for 2 or 4 hr a day, 5 times a week. Following the exposure, various functional and biochemical indices were evaluated along with histological examination and morphometric measurements of the femur in the differently exposed and control rats. The mathematical analysis of the combined effects of the SMF and fluoride based on the a response surface model demonstrated that, in full correspondence with what we had previously found for the combined toxicity of different chemicals, the combined adverse action of a chemical plus a physical agent was characterized by a tipological diversity depending not only on particular effects these types were assessed for but on the dose and effect levels as well. From this point of view, the indices for which at least one statistically significant effect was observed could be classified as identifying (I) mainly single-factor action; (II) additive unidirectional action; (III) synergism (superadditive unidirectional action); (IV) antagonism, including both subadditive unidirectional action and all variants of contradirectional action.

Effects Induced by a Weak Static Magnetic Field of Different Intensities on HT‐1080 Fibrosarcoma Cells

2021 ◽  
Vol 42 (3) ◽  
pp. 212-223
Author(s):  
Hakki Gurhan ◽  
Rodolfo Bruzon ◽  
Sahithi Kandala ◽  
Ben Greenebaum ◽  
Frank Barnes
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Fibrosarcoma Cells
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