MAQNİT VƏ ELEKTROMAQNİT SAHƏLƏRİNİN FİZİOLOJİ VƏ TERAPEVTİK TƏSİR MEXANİZMLƏRİ

2019 ◽  
Vol 01 (01) ◽  
pp. 39-42
Author(s):  
Rahim Mahammad Rahimov ◽  
◽  
Khalil Firudin Khalilov ◽  
Keyword(s):  
Magnetic Field ◽  
Biological Activity ◽  
Magnetic Fields ◽  
Key Words ◽  
Alternating Magnetic Field ◽  
Electron Polarization

Key words: magnetic field, alternating magnetic field, sinusoidal and pulsating magnetic fields, electron polarization, biological activity

Comparison on Effect of Alternating and Stationary Magnetic Field on the Conductivity of NaCl Solutions

2011 ◽  
Vol 391-392 ◽  
pp. 1095-1099
Author(s):  
Lei Chen ◽  
Nan Li ◽  
Feng Chai ◽  
Shu Kang Cheng
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Moment ◽  
Experimental Results ◽  
Alternating Magnetic Field ◽  
Stationary Magnetic Field ◽  
Conductivity Change

NaCl solutions of different concentrations were exposed to alternating and stationary magnetic fields. The conductivity change of the NaCl solutions was measured. The change of the conductivity of the NaCl solutions under different amplitudes magnetic fields was studied. The differences of effect between stationary and alternating magnetic field on the conductivity of the NaCl solutions was compared. The principle of the effects of magnetic fields on conductivity of NaCl solutions was discussed. The process of magnetic moment deflexion effected by the alternating magnetic field was analyzed, which explained the experimental results that the conductivity was increased more larger when then the NaCl solutions were exposing to alternating magnetic field than stationary magnetic field.

scholarly journals The loss of energy in metal plates of finite thickness, due to eddy currents produced by alternating magnetic fields

1926 ◽  
Vol 111 (759) ◽  
pp. 604-614 ◽  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Eddy Currents ◽  
Finite Thickness ◽  
Metal Plate ◽  
The Self ◽  
Alternating Magnetic Field ◽  
Metal Plates ◽  
Alternating Magnetic Fields

The induction of eddy currents in metal plates which are subjected to alternating magnetic fields has been discussed by Clerk-Maxwell, J. J. Thomson and many others. When an alternating magnetic field is produced normal to the surface of a metal plate, eddy currents are induced at the surface of the plate, which gradually penetrate its interior, the current dying away as it penetrates more deeply into the metal. The diffusion of the currents into the plate depends upon the self-induction and resistance of the paths along which they flow, and can be calculated by the same kind of formula as is used for determining the conduction of heat through a metal slab.

The measurement of a weak alternating magnetic field in unshielded space

Metrologiya ◽  
2021 ◽  
pp. 46-59
Author(s):  
O. L. Sokol-Kutylovskii
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Induction ◽  
Geomagnetic Field ◽  
Gradient Methods ◽  
Alternating Magnetic Field ◽  
Geomagnetic Variations ◽  
Weak Magnetic Fields ◽  
Random Character

In connection with attempts to use various types of sensors for measuring weak magnetic fields in geophysics, magnetobiology, and medicine in an unshielded space, the problem of comparing the results of these measurements arose. The issues of measuring a weak alternating magnetic field by various magnetic induction sensors in an unshielded space in the absence of obvious geomagnetic variations are considered. It is shown that the amplitude of natural geomagnetic noise in a quiet geomagnetic field in the absence of geomagnetic variations has a random character; therefore, gradient methods for measuring a weak alternating magnetic field are limited from below by the level of natural geomagnetic noise. The influence of the size of sensors of a weak alternating magnetic field on the results of measurements of broadband random geomagnetic noise is noted.

scholarly journals Magnetic Fields Induce Changes in Photosynthetic Pigments Content in Date Palm (Phoenix dactylifera L.) Seedlings

2009 ◽  
Vol 3 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Faten Dhawi ◽  
Jameel M. Al-Khayri
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Chlorophyll A ◽  
Static Magnetic Field ◽  
Photosynthetic Pigments ◽  
Date Palm ◽  
Phoenix Dactylifera ◽  
Alternating Magnetic Field ◽  
Chlorophyll B ◽  
The Impact

Growth, development and plants productivity are usually affected by photosynthetic pigments activity. Magnetic fields are known to induce biochemical changes and could be used as a stimulator for growth related reactions including affecting photosynthetic pigments. The impact of magnetic field strengths on chlorophyll and carotenoids were investigated in this study through the use of date palm (Phoenix dactylifera L.) seedlings. To study the effects of magnetic treatments on photosynthetic pigments, date palm seedlings were exposed to magnetic fields in two experiments. In the first experiment, seedlings were treated with static magnetic field at three levels of (10, 50 and 100 mT) and different durations (30, 60, 180, 240 and 360 min). At the second experiment, seedlings were treated with alternating magnetic field at 1.5 T for different durations (1, 5, 10 and 15 min). The photosynthetic pigments (chlorophyll a, chlorophyll b, carotenoids and total pigments) were assayed using spectrophotometric methods. Results indicated that pigments content (chlorophyll a, chlorophyll b, carotenoids and total pigments) was significantly increased under static magnetic field. The highest measurements were recorded at 100 mT, after 360 min of exposure. On the other hand, alternating magnetic field has decreased photosynthetic pigments content after 10 min of treatment with 1.5 T. Low magnetic field doses had a simulative effect on photosynthetic pigments whereas high doses had a negative effect. Chlorophyll a and carotenoids were more affected than chlorophyll b. Magnetic fields treatment could be used to enhance plant growth and productivity.

The Crystal Orientation of Hydroxyapatite Coatings Affected by the Magnetic Fields on Magnesium Alloy

2013 ◽  
Vol 395-396 ◽  
pp. 751-754 ◽  
Author(s):  
Chen Yang Xu ◽  
Xiao Ling Xu ◽  
Fang Gao ◽  
Fu Xiang Chu ◽  
Qi Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Crystal Structure ◽  
Biological Activity ◽  
Magnesium Alloy ◽  
Magnetic Fields ◽  
Crystal Orientation ◽  
Degradation Rate ◽  
The Arctic ◽  
Hydroxyapatite Coatings ◽  
The Antarctic

Hydroxyapatite coatings with biological activity on magnesium alloy can effectively reduce its degradation rate in the physiological environment. Pre-calcification was applied as the pretreatment in this paper. And then, hydroxyapatite coatings were deposited on the surface of the magnesium alloy in non-magnetic field, near the antarctic and the arctic of a constant magnetic field respectively. The morphology, phase composition and crystal structure of the coatings were analyzed using SEM and XRD. The results show that the crystals of the coatings affected by the magnetic fields are preferential orientation significantly.

scholarly journals The Effect of Extremely Low Frequency Alternating Magnetic Field on the Behavior of Animals in the Presence of the Geomagnetic Field

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Natalia A. Belova ◽  
Daniel Acosta-Avalos
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Geomagnetic Field ◽  
Low Frequency ◽  
Alternating Magnetic Field ◽  
Magnetic Alignment ◽  
Resonance Model ◽  
Transduction Mechanisms ◽  
Alternating Magnetic Fields ◽  
The Magnetic Field

It is known that the geomagnetic field can influence animal migration and homing. The magnetic field detection by animals is known as magnetoreception and it is possible due to two different transduction mechanisms: the first one through magnetic nanoparticles able to respond to the geomagnetic field and the second one through chemical reactions influenced by magnetic fields. Another behavior is the magnetic alignment where animals align their bodies to the geomagnetic field. It has been observed that magnetic alignment of cattle can be disrupted near electric power lines around the world. Experimentally, it is known that alternating magnetic fields can influence living beings, but the exact mechanism is unknown. The parametric resonance model proposes a mechanism to explain that effect on living beings and establishes that, in the presence of a constant magnetic field, molecules associated with biochemical reactions inside cells can absorb resonantly alternating magnetic fields with specific frequencies. In the present paper, a review is made about animal magnetoreception and the effects of alternating magnetic fields in living beings. It is suggested how alternating magnetic fields can interfere in the magnetic alignment of animals and a general conclusion is obtained: alternating magnetic field pollution can affect the magnetic sensibility of animals.

scholarly journals INFLUENCE OF THE MAGNETIC FIELD ON THE LIVING ORGANISMS AND HUMANS

2019 ◽  
pp. 17-25
Author(s):  
Stefan Naydenov ◽  
Sonia Petkova ◽  
Petar Getsov ◽  
Garo Mardirossian
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Key Words ◽  
Physiological Response ◽  
Permanent Magnetic Field ◽  
Biological Objects ◽  
Living Organisms ◽  
The Magnetic Field ◽  
Made In

The question of the influence of magnetism on biological objects for years has been a debate with many contradictory opinions. The article provides a brief overview of publications and various and contradictory views on the influence of magnetic fields on living organisms and humans. An explanation is sought for findings made in various scientific studies, as well as an answer to the question: Can a permanent magnetic field be useful for our health and under what conditions? Key words: magnetic field, health, diagnostic, physiotherapy, physiological response

scholarly journals New Magnetic Abrasive Finishing for Alumina Ceramic Plane Using Alternating Magnetic Fields

2019 ◽  
Vol 13 (6) ◽  
pp. 775-779
Author(s):  
Chaowen Dong ◽  
◽  
Yanhua Zou
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Diamond Particle ◽  
Alumina Ceramic ◽  
Alternating Magnetic Field ◽  
New Method ◽  
Magnetic Abrasive Finishing ◽  
Multi Stage ◽  
Abrasive Finishing ◽  
Alternating Magnetic Fields

In this paper, we propose a new plane magnetic abrasive finishing method, applicable to planes, that uses the alternating magnetic fields to solve problems such as the easy deformation and poor recovery of a magnetic brush in conventional magnetic abrasive finishing method. Compared with the magnetic brush used in conventional magnetic abrasive finishing, that in the new method can stably shape a workpiece under an alternating magnetic field. To determine the optimal finishing parameters, we focused on studying the effects of spindle rotational speed, size of diamond particle, and frequency of alternating magnetic field on the finishing surface. Then, according to the obtained optimal finishing parameters, multi-stage finishing experiments were performed with the new method. The results show that surface roughness can be improved from 230 nm Ra to 19 nm Ra in 60 min with the proposed method.

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