Non-linear dependence of the dielectric properties of chick embryo myoblast membranes exposed to a sinusoidal 50 Hz magnetic field

1991 ◽  
Vol 60 (6) ◽  
pp. 877-890 ◽  
Author(s):  
Martino Grandolfo ◽  
Maria Santini ◽  
Paolo Vecchia ◽  
Adalberto Bonincontro ◽  
Cesare Cametti ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Dielectric Properties ◽  
Chick Embryo ◽  
Linear Dependence ◽  
Non Linear

Non-linear Dependence of the Dielectric Properties of Chick Embryo Myoblast Membranes Exposed to A Sinusoidal 50 Hz Magnetic Field

1991 ◽  
Vol 60 (6) ◽  
pp. 877-890 ◽  
Author(s):  
Martino Grandolfo ◽  
Maria T. Santini ◽  
Paolo Vecchia ◽  
Adalberto Bonincontro ◽  
Cesare Cametti ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Dielectric Properties ◽  
Chick Embryo ◽  
Linear Dependence ◽  
Non Linear

A Static Magnetic Field Does Not Affect the Dielectric Properties of Chick Embryo Myoblast Membranes

1994 ◽  
Vol 65 (2) ◽  
pp. 277-284 ◽  
Author(s):  
M.T. Santini ◽  
C. Cametti ◽  
E. Straface ◽  
M. Grandolfo ◽  
P.L. Indovina
Keyword(s):  
Magnetic Field ◽  
Dielectric Properties ◽  
Chick Embryo ◽  
Static Magnetic Field

Effects of a 50-Hz sinusoidal magnetic field on the dielectric properties of chick embryo myoblasts

1991 ◽  
Vol 5 (S1) ◽  
pp. 78-79
Author(s):  
C. Cametti ◽  
M. Grandolfo ◽  
P. L. Indovina ◽  
M. T. Santini ◽  
P. Vecchia
Keyword(s):  
Magnetic Field ◽  
Dielectric Properties ◽  
Chick Embryo ◽  
Sinusoidal Magnetic Field

The role of radiated non-linear electromagnetic waves from initial DNAs in formation of the little brain, neural circuits and other decision centers: Determining time of death by considering evolutions of waves of death (Preprint)

2019 ◽  
Author(s):  
Alireza Sepehri
Keyword(s):  
Magnetic Field ◽  
Chick Embryo ◽  
Nonlinear Waves ◽  
Electromagnetic Waves ◽  
Neural Circuits ◽  
Culture Vessel ◽  
Chick Embryos ◽  
Non Linear ◽  
Two Systems

BACKGROUND Nonlinear electromagnetic waves give us the best opportunity to explore evolutions of cells in biological systems. These waves carry important information about the status and various stages of life and death of a cell in these systems. In fact, cells send their information to other cells by exchanging non-linear fields. In this research, we will use of nonlinear waves for considering the role of initial DNAs in process of formation of the little brain and neural circuits in a chick embryo. Also, these nonlinear waves give us the best opportunity to explore the role of the little brain in voluntary actions in absence of the main brain in a bird. Some of these waves play the role of signal of death and lead to the stop of exchaning information between cells and end the life. The origin of these waves is also one of subjects in our consideration. OBJECTIVE There are no objective METHODS 1.We provide a system of shell-less culture from fertilized eggs. We creack eggshell and transform the whole egg contents to culture vessel. The culture vessels are maintained at $38^{0}C$ and rotated with 120° clockwise twice a day. After 54 h, in most of vessels, chick embryo is emerged. We connect these chick embryos (ex-ovo) to an scope and consider evolutions of nonlinear waves. We analyze evolutions of radiated waves of these embryos before and during formation of head. Then, to consider exchanging information between initial DNAs, we put two systems of chick embryos in an inductor and send a current to it. We consider changes in output currents and compare them with input currents. 2. First, we connect hearts of some birds to an scope and remove their head eventually. We analyze exchanged signals between the little brain on the heart and other parts of body. Then, we removed heads of some birds suddenly and consider radiated signals of the little brain again. This helps us to explore the origin of signal of death in a biological system. RESULTS We have four observational results 1.Before formation of brain, the little brain is formed on the heart. This little brain send it's information to other cells by exchanging waves with them. We can observe these waves on the scope. 2. After a period of time, the main brain interior of head is formed and interact with the little brain on the heart. This leads to an increase in observed radiated waves on the scopes. 3. If we put two shell less culture systems of chick embryos in an inductor and send an input currents to it, a magnetic field is emerged that interact with little brains of two systems. Exchanged waves between two little brains change magnetic field and input currents. 4. When, head of a bird is removed eventually,some signals of death exchange between brain on the head and the little brain on the heart and life is ended. However, by cutting heads suddenly, the interaction between head and little brain is stoped and these signals coulnt play any role. CONCLUSIONS In this research, we find that after formation of initial DNAs of chick embryo, they exchange electromagnetic signals with medium and each other. In fact, each gene of these DNAs act like the reciever or sender of radio waves. To control the process of transferring information, some circuits are emerged that each circuit depends on the activity of one gene. Because of various types of emitted waves, each neuron has several types of terminals in dendrite and axon to receive and send these waves. Before formation of neurons, initial informations are transmitted by blood molecules. Because of the role of blood molecules in transferring initial information, first circuits are formed on the heart and build the little brain . However, eventually, some circuits are emerged on the head which construct the brain. We bring some reasons for the existence of the little brain. We connect a chick embryo to an scope and observe evolutions of waves during formation of the little brain and the main brain. In absence of brain, the little brain emit some signals, while by passing time and formation of brain, the interaction between these systems leads to an increase in radiated waves. Then, we put two shell-less cultures of chick embryos in an inductor, apply a magnetic field to both of them and show that little brains of these systems interact with each other and change the value of output magnetic field and currents. Next, we consider signals of the little brain of the birds during removing their heads. We find that always, brain send some signals to the little brain and inform it of the end of life. However, if removing is done suddenly, these waves couldnt be exchanged and heart continue to work. This produce some hopes to cure patients.

A shallow-liquid theory in magnetohydrodynamics

1960 ◽  
Vol 7 (1) ◽  
pp. 81-107 ◽  
Author(s):  
L. E. Fraenkel
Keyword(s):  
Magnetic Field ◽  
Mechanical Energy ◽  
Fluid Velocity ◽  
Linear Equations ◽  
Qualitative Difference ◽  
Meridional Plane ◽  
Plane Flow ◽  
Non Linear ◽  
Moderate Magnetic Field ◽  
Approximate Equations

The non-linear and linear ‘shallow-water’ theories, which describe long gravity waves on the free surface of an inviscid liquid, are extended to the case of an electrically conducting liquid on a horizontal bottom, in the presence of a vertical magnetic field. The dish holding the liquid, and the medium outside it, are assumed to be non-conducting. The approximate equations are based on a small ratio of depth to wavelength, on the properties of mercury, and on a moderate magnetic field strength. These equations have a ‘magneto-hydraulic’ character, for in the shallow liquid layer the horizontal fluid velocity and current density are independent of the vertical co-ordinate.Some explicit solutions of the linear equations are obtained for plane flows and for axi-symmetric flows in which the velocity vector lies in a vertical, meridional plane. The amplitudes of waves in a dish, and the amplitudes behind wave fronts progressing into undisturbed liquid, are found to be exponentially damped, the mechanical energy associated with a disturbance being dissipated by Joule heating.The approximate non-linear equations for plane flow are studied by means of characteristic variables, and it appears that, because of the magnetic damping effect, there is less qualitative difference between solutions of the non-linear and linear approximate equations at large times than is the case when the magnetic field is absent. In particular, the characteristic curves depart only a finite distance from their ‘undisturbed positions’.

MHD STAGNATION POINT FLOW OF HYPERBOLIC TANGENT FLUID WITH VISCOUS DISSIPATION AND CHEMICAL REACTION

2021 ◽  
Vol 21 (2) ◽  
pp. 569-588
Author(s):  
KINZA ARSHAD ◽  
MUHAMMAD ASHRAF
Keyword(s):  
Magnetic Field ◽  
Differential Equations ◽  
Ordinary Differential Equations ◽  
Stagnation Point ◽  
Viscous Dissipation ◽  
Chemical Reaction ◽  
Normal Velocity ◽  
Hyperbolic Tangent ◽  
Linear Ordinary Differential Equations ◽  
Non Linear

In the present work, two dimensional flow of a hyperbolic tangent fluid with chemical reaction and viscous dissipation near a stagnation point is discussed numerically. The analysis is performed in the presence of magnetic field. The governing partial differential equations are converted into non-linear ordinary differential equations by using appropriate transformation. The resulting higher order non-linear ordinary differential equations are discretized by finite difference method and then solved by SOR (Successive over Relaxation parameter) method. The impact of the relevant parameters is scrutinized by plotting graphs and discussed in details. The main conclusion is that the large value of magnetic field parameter and wiessenberg numbers decrease the streamwise and normal velocity while increase the temperature distribution. Also higher value of the Eckert number Ec results in increases in temperature profile.

Dielectric properties of Shell oil transformer oil with impurities of carbon nanotubes and fullerene C60

2021 ◽  
Vol 24 (04) ◽  
pp. 413-418
Author(s):  
O.V. Kovalchuk ◽  
◽  
I.P. Studenyak ◽  
T.M. Kovalchuk ◽  
E.A. Ayryan ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Dielectric Properties ◽  
Fullerene C60 ◽  
Transformer Oil ◽  
C60 Fullerene ◽  
Cooling Efficiency ◽  
Fullerene Concentration ◽  
Multiwall Nanotubes

At the temperature 293 K, the influence of two types of nanoimpurities (carbon multiwall nanotubes and C60 fullerene) both separately and together on the dielectric properties of Shell oil transformer oil has been studied. It has been shown that these impurities do not significantly effect on the value of the dielectric permittivity of Shell oil, but more significantly increase its conductivity. It has been found that in the presence of nanotubes inside Shell oil, the dependence of its electrical conductivity on the fullerene concentration is nonmonotonic. The samples with the fullerene concentration 100 ppm have the highest conductivity. At the fullerene concentration 300 ppm, the conductivity of Shell oil with the impurities of carbon nanotube and C60 fullerene becomes almost equal to the electrical conductivity of Shell oil only with the impurities of carbon nanotubes. It has been suggested that C60 fullerene can be used to reduce the electrical conductivity of Shell oil with magnetic nanoparticles required to increase the cooling efficiency of transformers under the action of their own magnetic field.

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