scholarly journals Magnetic viscosity effect in ac susceptibility measurements

1998 ◽  
Vol 57 (1) ◽  
pp. 92-95 ◽  
Author(s):  
I. Klik ◽  
Y. D. Yao ◽  
X. Yan ◽  
C. R. Chang
Keyword(s):  
Ac Susceptibility ◽  
Viscosity Effect ◽  
Magnetic Viscosity

scholarly journals Magnetic Viscosity Effect on Grounded-Wire TEM Responses and Its Physical Mechanism

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 6140-6152
Author(s):  
Linbo Zhang ◽  
Hai Li ◽  
Guoqiang Xue ◽  
Wen Chen ◽  
Yiming He
Keyword(s):  
Physical Mechanism ◽  
Viscosity Effect ◽  
Magnetic Viscosity

Aftereffects in the transient electropmagnetic method

2020 ◽  
Author(s):  
Nikolay O. Kozhevnikov ◽  
◽  
Evgeniy Yu. Antonov ◽  
Keyword(s):  
Spatial Distribution ◽  
Transient Response ◽  
Eddy Currents ◽  
Electric Polarization ◽  
Induced Polarization ◽  
Viscosity Effect ◽  
Magnetic Viscosity

We discuss the effect of induced electric polarization and magnetic viscosity on induction transient response. Since eddy currents evolution depends on induced polarization properties, one can, by measuring the induction transient response, find the distribution these properties in the ground. However, the magnetic viscosity effect is decoupled from that produced by eddy currents. Therefore, induction transient response does not contain information about the spatial distribution of magnetic viscosity.

A Diffusional Magnetic Viscosity Effect in Iron-Carbon Martensite

1968 ◽  
Vol 29 (1) ◽  
pp. K39-K41
Author(s):  
J. Kinel ◽  
J. W. Moroń ◽  
J. Przybyła
Keyword(s):  
Viscosity Effect ◽  
Magnetic Viscosity ◽  
Carbon Martensite

scholarly journals REDUCING THE MAGNETIC VISCOSITY EFFECT ON TEM SOUNDING DATA

2021 ◽  
Vol 12 (3S) ◽  
pp. 703-714
Author(s):  
M. V. Sharlov ◽  
N. O. Kozhevnikov ◽  
E. Yu. Antonov
Keyword(s):  
Viscosity Effect ◽  
Magnetic Viscosity

Frequency response of AC susceptibility in high temperature superconductors

2005 ◽  
Vol 135 (3) ◽  
pp. 203-207 ◽  
Author(s):  
S.L. Liu ◽  
G.J. Wu ◽  
X.B. Xu ◽  
J. Wu ◽  
H.M. Shao ◽  
...  
Keyword(s):  
High Temperature ◽  
Frequency Response ◽  
Ac Susceptibility ◽  
High Temperature Superconductors

Solvent and viscosity effect on the kinetics of the thermal cis-trans isomerization of 3'-nitro-4-diethylaminoazobenzene

1989 ◽  
Vol 11 (3) ◽  
pp. 179-189 ◽  
Author(s):  
Bruno Marcandalli ◽  
Pier Luigi Beltrame ◽  
Ernestina Dubini-Paglia ◽  
Alberto Seves
Keyword(s):  
Viscosity Effect ◽  
Trans Isomerization ◽  
Kinetics Of

Experiments and mechanistic modeling of viscosity effect on a multistage ESP performance under viscous fluid flow

2021 ◽  
pp. 095765092110149
Author(s):  
Yi Shi ◽  
Jianjun Zhu ◽  
Haoyu Wang ◽  
Haiwen Zhu ◽  
Jiecheng Zhang ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Viscous Fluid ◽  
Prediction Error ◽  
Flow Direction ◽  
Fluid Viscosity ◽  
Oil Viscosity ◽  
Viscous Fluid Flow ◽  
Viscosity Effect ◽  
High Production Rate ◽  
Pump Head

Assembled in series with multistage, Electrical Submersible Pumps (ESP) are widely used in offshore petroleum production due to the high production rate and efficiency. The hydraulic performance of ESPs is subjected to the fluid viscosity. High oil viscosity leads to the degradation of ESP boosting pressure compared to the catalog curves under water flow. In this paper, the influence of fluid viscosity on the performance of a 14-stage radial-type ESP under varying operational conditions, e.g. rotational speeds 1800–3500 r/min, viscosities 25–520 cP, was investigated. Numerical simulations were conducted on the same ESP model using a commercial Computational Fluid Dynamics (CFD) software. The simulated average pump head is comparable to the corresponding experimental data under different viscosities and rotational speeds with less than ±20% prediction error. A mechanistic model accounting for the viscosity effect on ESP boosting pressure is proposed based on the Euler head in a centrifugal pump. A conceptual best-match flowrate QBM is introduced, at which the impeller outlet flow direction matches the designed flow direction. The recirculation losses caused by the mismatch of velocity triangles and other head losses resulted from the flow direction change, friction loss and leakage flow etc., are included in the model. The comparison of model predicted pump head versus experimental measurements under viscous fluid flow conditions demonstrates good agreement. The overall prediction error is less than ±10%.

scholarly journals New Radical Cation Salts Based on BDH-TTP Donor: Two Stable Molecular Metals with a Magnetic [ReF6]2− Anion and a Semiconductor with a [ReO4]− Anion

2021 ◽  
Vol 7 (4) ◽  
pp. 54
Author(s):  
Nataliya D. Kushch ◽  
Gennady V. Shilov ◽  
Lev I. Buravov ◽  
Eduard B. Yagubskii ◽  
Vladimir N. Zverev ◽  
...  
Keyword(s):  
Radical Cation ◽  
Low Temperatures ◽  
Ac Susceptibility ◽  
Slow Relaxation ◽  
Organic Radical ◽  
Inorganic Anion ◽  
Distinctive Features ◽  
Metallic Character ◽  
Radical Cation Salts ◽  
Partial Population

Three radical cation salts of BDH-TTP with the paramagnetic [ReF6]2− and diamagnetic [ReO4]− anions have been synthesized: κ-(BDH-TTP)4ReF6 (1), κ-(BDH-TTP)4ReF6·4.8H2O (2) and pseudo-κ″-(BDH-TTP)3(ReO4)2 (3). The crystal and band structures, as well as the conducting properties of the salts, have been studied. The structures of the three salts are layered and characterized by alternating κ-(1, 2) and κ″-(3) type organic radical cation layers with inorganic anion sheets. Similar to other κ-salts, the conducting layers in the crystals of 1 and 2 are formed by BDH-TTP dimers. The partial population of positions of Re atoms and disorder in the anionic layers of 1–3 are their distinctive features. Compounds 1 and 2 show the metallic character of conductivity down to low temperatures, while 3 is a semiconductor. The ac susceptibility of crystals 1 was investigated in order to test the possible slow relaxation of magnetization associated with the [ReF6]2− anion.

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