scholarly journals Acupuncture – An Electrical Phenomenon

10.5772/24941 ◽  
2011 ◽  
Author(s):  
Karlheinz Helmbold
Keyword(s):  
Electrical Phenomenon

Detection and Characterization of an Electrical Failure Induced during Laser Ablation of Packages

2008 ◽  
Author(s):  
P. Schwindenhammer ◽  
H. Murray ◽  
P. Descamps ◽  
P. Poirier
Keyword(s):  
Laser Ablation ◽  
Integrated Circuits ◽  
Failure Analysis ◽  
Ablation Process ◽  
Thermally Induced ◽  
Electrical Failure ◽  
Electrical Phenomenon ◽  
Semiconductor Packages ◽  
Complex Semiconductor

Abstract Decapsulation of complex semiconductor packages for failure analysis is enhanced by laser ablation. If lasers are potentially dangerous for Integrated Circuits (IC) surface they also generate a thermal elevation of the package during the ablation process. During measurement of this temperature it was observed another and unexpected electrical phenomenon in the IC induced by laser. It is demonstrated that this new phenomenon is not thermally induced and occurs under certain ablation conditions.

Investigation of Ferroresonance Mitigation Techniques in Voltage Transformer Using ATP-EMTP Simulation

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
Zulkurnain Abdul-Malek ◽  
Kamyar Mehranzamir ◽  
Behnam Salimi ◽  
Hadi Nabipour Afrouzi ◽  
Saeed Vahabi Mashak
Keyword(s):  
Nonlinear Dynamical Systems ◽  
Electrical Equipment ◽  
Resonant Circuit ◽  
Nonlinear Circuit ◽  
Voltage Transformer ◽  
Nonlinear Dynamical ◽  
Electrical Systems ◽  
The Core ◽  
Electrical Phenomenon ◽  
Mitigation Techniques

Ferroresonance is a complex nonlinear electrical phenomenon that can cause dielectric and thermal problems for electrical equipment. Electrical systems with ferroresonant behavior are nonlinear dynamical systems. The ferroresonance phenomenon may take place when the core of an inductive device becomes saturated, and its current flux characteristic becomes nonlinear. While in the case of a linear resonant circuit the resonance frequency is well defined, in the case of a nonlinear circuit, the oscillations may exist at various frequencies, depending on many factors of the particular case. In this paper, ferroresonance phenomenon and its mitigation techniques in 33 kV/110 V voltage transformers (VT) were studied using ATP-EMTP simulation. Initial investigations were carried out for the VT failures occurred at one substation in Malaysia. Physical and burn characteristics of the failed VTs were studied. Simulation results show that ferroresonance cannot be proven to have occurred at the VT due to switching operations since one precondition, namely the critical capacitance, could not have been satisfied. However, in the event of a ferroresonance occurring, several mitigation techniques such as using load resistors, proper grounding sequence, reconfiguration of VT connection, and overcurrent and overvoltage protection can be implemented.

scholarly journals Electrical phenomenon in rabbit papillary muscle during Ba++-induced contracture.

1978 ◽  
Vol 54 (9) ◽  
pp. 565-568
Author(s):  
Yasutake SAEKI ◽  
Kouichi SHIOZAWA ◽  
Keiji YANAGISAWA
Keyword(s):  
Papillary Muscle ◽  
Rabbit Papillary Muscle ◽  
Electrical Phenomenon

Singular Electrical Phenomenon

1850 ◽  
Vol 5 (18) ◽  
pp. 142-142
Keyword(s):  
Electrical Phenomenon

On an Electrical Phenomenon Observed in Cholera

1849 ◽  
Vol 39 (25) ◽  
pp. 501-502
Author(s):  
J. C. ATKINSON
Keyword(s):  
Electrical Phenomenon

NUTRITION OF PLANTS CONSIDERED AS AN ELECTRICAL PHENOMENON—A NEW APPROACH

Soil Science ◽  
1951 ◽  
Vol 71 (5) ◽  
pp. 371-376 ◽  
Author(s):  
EDWARD L. BREAZEALE ◽  
W. T. MCGEORGE ◽  
J. F. BREAZEALE
Keyword(s):  
New Approach ◽  
Electrical Phenomenon

Electrical Phenomenon in Membranes

1988 ◽  
Vol 135 ◽  
Author(s):  
Alentin Pechorin
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Electrical Phenomenon ◽  
Conductive Membranes

AbstractFor some superionic conductive membranes the speed of diffusion of ions is enough to produce a measurable electric field in a magnetic field, which is situated perpendicularly to the di rection of diffusion. This phenomenon may be used in the manufac turing of different kinds of sensors.

Effects of Carbonic Anhydrase Inhibitors on Electrical Phenomenon of the Ciliary Body of the Rabbit Eye

1984 ◽  
Vol 429 (1 Biology and C) ◽  
pp. 580-581 ◽  
Author(s):  
KENICHI KISHIDA ◽  
NOBUYUKI OCHI ◽  
KAZUYUKI EMI ◽  
SHUZO IIZUKA ◽  
SHUNJI TSUBOI
Keyword(s):  
Carbonic Anhydrase ◽  
Ciliary Body ◽  
Carbonic Anhydrase Inhibitors ◽  
Rabbit Eye ◽  
Electrical Phenomenon

Is the U wave in the electrocardiogram a mechano-electrical phenomenon?

2011 ◽  
pp. 274-280
Author(s):  
Rainer Schimpf ◽  
Martin Borggrefe
Keyword(s):  
Electrical Phenomenon
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