scholarly journals Residual magnetization of various genetic rocks and ores of the Kola region under the influence of mechanical oscillations

Vestnik MGTU ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 13-21
Author(s):  
A. M. Zhirova ◽  
Keyword(s):  
Residual Magnetization ◽  
Kola Region ◽  
Mechanical Oscillations

Namibite from the Alakurtti pegmatites (Kola region)

2018 ◽  
Vol 147 (3) ◽  
pp. 59-68 ◽  
Author(s):  
Borisova V. V. ◽  
◽  
Voloshin A. V. ◽  
Kompranchenko A. A. ◽  
Selivanova E. A. ◽  
...  
Keyword(s):  
Kola Region

scholarly journals Mechanical oscillations enhance gene delivery into suspended cells

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Z. L. Zhou ◽  
X. X. Sun ◽  
J. Ma ◽  
C. H. Man ◽  
A. S. T. Wong ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Mechanical Oscillations ◽  
Suspended Cells

scholarly journals Mechanotendography in Achillodynia shows reduced oscillation variability of pre-loaded Achilles tendon: a pilot study

2020 ◽  
Vol 30 (2) ◽  
pp. 247-257
Author(s):  
Laura Schaefer ◽  
Frank Bittmann
Keyword(s):  
Achilles Tendon ◽  
Rank Correlation ◽  
Achilles Tendinopathy ◽  
The Body ◽  
Mechanical Pressure ◽  
Mechanical Oscillations ◽  
Pressure Impact ◽  
The Subject ◽  
The Mean ◽  
Intrapersonal Variability

The present study focuses on an innovative approach in measuring the mechanical oscillations of pre-loaded Achilles tendon by using Mechanotendography (MTG) during application of a short yet powerful mechanical pressure impact. This was applied on the forefoot from the plantar side in direction of dorsiflexion, while the subject stood on the ball of the forefoot on one leg. Participants with Achilles tendinopathy (AT; n = 10) were compared to healthy controls (Con; n = 10). Five trials were performed on each side of the body. For evaluation, two intervals after the impulse began (0-100ms; 30-100ms) were cut from the MTG and pressure raw signals. The intrapersonal variability between the five trials in both intervals were evaluated using the arithmetic mean and coefficient of variation of the mean correlation (Spearman rank correlation) and the normalized averaged mean distances, respectively. The AT-group showed a significantly reduced variability in MTG compared to the Con-group (from p = 0.006 to p = 0.028 for different parameters). The 95% confidence intervals (CI) of MTG results were disjoint, whereas the 95% CIs of the pressure signals were similar (p = 0.192 to p = 0.601). We suggest from this work that the variability of mechanical tendon oscillations could be an indicative parameter of an altered Achilles tendon functionality.

STUDIES OF F ON SUPERCONDUCTIVITY IN HIGH-Tc (Bi,Pb)SrCaCu(O,F) SUPERCONDUCTORS

1993 ◽  
Vol 07 (17) ◽  
pp. 1127-1132
Author(s):  
JIANGUO CAI ◽  
XIAOLONG ZHANG ◽  
XIANGHUA ZHOU ◽  
QIN WEI
Keyword(s):  
Critical Current Density ◽  
Flux Pinning ◽  
Weak Link ◽  
Meissner Effect ◽  
Experimental Methods ◽  
Residual Magnetization ◽  
High Tc ◽  
Bean Model ◽  
Pinning Potential ◽  
The Difference

In this article, the experimental results of the superconductivity in high-Tc (Bi,Pb) 2 Sr 2 Ca 2 Cu 3( O y, F x), x = 0–0.84, is described. Its critical current density Jc is about ten times larger than that of undoped F sample undergoing the same technology. The causes for the increase in Jc are studied by several experimental methods. The difference in quantity between Meissner effect and shield effect indicates that the effect on superconductivity is from the weak-link regions of the superconductor grains. SEM shows that F atoms doped in BPSCCO superconductor can make its grains grow larger, arrange regularly, and increase in touch area. These changes strengthen the netty link between grains. The magnitude of residual magnetization of F-doped sample is eight times as large as that of the undoped one. The flux pinning potential U0 is calculated from the Bean model. The U0 in F-doped sample (when H = 64 Oe, x = 0.64) is eight times as large as that in the undoped one.

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