Electric-field orientation of charged helical polypeptides in solution

2007 ◽  
pp. 122-130 ◽  
Author(s):  
K. Yoshioka
Keyword(s):  
Electric Field ◽  
Field Orientation

scholarly journals Influence of electric field orientation on the effect of ocular current stimulation using full field electroretinogram

2021 ◽  
Vol 7 (2) ◽  
pp. 167-170
Author(s):  
Maren-Christina Blum ◽  
Lilly Leydolph ◽  
Sascha Klee
Keyword(s):  
Electric Field ◽  
Data Distribution ◽  
Electrode Position ◽  
Ocular Diseases ◽  
Bonferroni Correction ◽  
Field Orientation ◽  
Full Field ◽  
Significant Difference ◽  
The Mean ◽  
The Difference

Abstract Ocular current stimulation (CS) exhibits potential for the treatment of neurodegenerative ocular diseases. For a full field electroretinogram (ffERG) we found no CS effect on the characteristic waves (a-wave, b’-wave, and b-wave). To investigate whether the orientation of the generated electric field has an influence on the CS effect, this study repeated the previous ffERG study with changing one CS electrode position and compared the results of both studies. In the first study 15 (8 m, 27.5 ± 4.5 years) and in the second study 17 (7 m, 22.0 ± 1.9 years) healthy volunteers were stimulated with an anodal, cathodal, and sham direct CS of 800 μA for 5 min in three sessions (randomized, different days). For both studies, a cut-sized ring rubber electrode was placed around the eye. A square rubber electrode was placed for the first study at the ipsilateral temple and for the second study at the visual cortex. Before (ERG 1) and during (ERG 2) the CS, the ffERG was measured. For both studies, the difference between the ERG 1 and ERG 2 measurement (CS effect) for the three characteristic waves was analyzed and compared between the studies. For statistical analysis, the Mann-Whitney U test with Bonferroni correction was applied (α = 0.05). The comparison of the data distribution showed only slight differences between the studies. The Mann-Whitney U test found no significant difference of the CS effect between the studies for all amplitudes and CS groups (p ≥ 0.0055). In the mean, the latency differences were smaller than the time resolution, therefore no statements for latency effects were possible. It can be concluded that the retinal cells generating the ffERG are not affected by ocular CS in either electrode montages tested.

Electric field orientation of sonicated κ-carrageenan in aqueous solution: ionic polarization of loosely bound counterions

Polymer ◽  
1992 ◽  
Vol 33 (2) ◽  
pp. 429-431 ◽  
Author(s):  
Kazuyoshi Ueda ◽  
Hiroshi Ochiai ◽  
Tomoyuki Itaya ◽  
Kiwamu Yamaoka
Keyword(s):  
Aqueous Solution ◽  
Electric Field ◽  
Field Orientation ◽  
Ionic Polarization

Microwave Magneto-Electric Interactions in Multiferroics

2006 ◽  
Vol 966 ◽  
Author(s):  
Gopalan Srinivasan ◽  
A.S. Tatarenko ◽  
Y. K. Fetisov ◽  
V. Gheevarughese ◽  
M.I. Bichurin
Keyword(s):  
Electric Field ◽  
Ferromagnetic Resonance ◽  
Lead Zirconate Titanate ◽  
Resonance Field ◽  
Cavity Resonator ◽  
Lead Zirconate ◽  
Field Orientation ◽  
Field Shift ◽  
Lead Magnesium ◽  
Iron Garnet

ABSTRACTInvestigations on microwave magneto-electric (ME) interactions at 1-10 GHz have been carried out on yttrium iron garnet (YIG)-lead zirconate titanate (PZT) and YIG-lead magnesium niobate lead titanate (PMN-PT) bilayers. Ferromagnetic resonance is a powerful tool for such studies. An electric field E applied to the composite produces a mechanical deformation in PZT or PMN-PT, resulting in a shift in the resonance field for YIG. Information on the nature of high frequency ME coupling has been obtained from data on resonance field shift vs E. A cavity resonator or stripline structure was used. The measured ME interactions are in the range 1-5 Oe cm/kV. The coupling strength has been found to be dependent on magnetic field orientation. The strongest interaction is measured in YIG-PZT systems. The design and characterization of ferromagnetic resonance based, electric field tunable ME resonators and filters are discussed.

Anomalous temperature effect in electric field orientation of poly(cyclohexylmethylsilane)

1995 ◽  
Vol 67 (5) ◽  
pp. 638-640 ◽  
Author(s):  
Yoshikazu Nakayama ◽  
Keiichi Hirooka ◽  
Robert West
Keyword(s):  
Electric Field ◽  
Temperature Effect ◽  
Anomalous Temperature ◽  
Field Orientation
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