Scattering of a neutral fermion by a force center

1978 ◽  
Vol 21 (9) ◽  
pp. 1225-1226
Author(s):  
V. G. Bagrov ◽  
Yu. I. Klimenko ◽  
I. M. Ternov ◽  
V. R. Khalilov
Keyword(s):  
2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0025
Author(s):  
Zhao Hong-Mou

Category: Ankle; Basic Sciences/Biologics Introduction/Purpose: To study the effect of different degrees of distal tibial varus and valgus deformities on the tibiotalar joint contact, and to understand the role of fibular osteotomy. Methods: Eight cadaveric lower legs were used for biomechanical study. Nine conditions were included: normal ankle joint (group A), 10° varus (group B), 5° varus (group C), 5° valgus (group D), 10° valgus (group E) with fibular preserved, and 10° varus (group F), 5° varus (group G), 5° valgus (group H), and 10° valgus (group I) after fibular osteotomy. The joint contact area, contact pressure, and peak pressure were tested; and the translation of contact force center was observed. Results: The joint contact area, contact pressure, and peak pressure had no significant difference between group A and groups B to E (P>0.05). After fibular osteotomy, the contact area decreased significantly in groups F and I when compared with group A (P<0.05); the contact pressure increased significantly in groups F, H, and I when compared with group A (P<0.05); the peak pressure increased significantly in groups F and I when compared with group A (P<0.05). There were two main anterior-lateral and anterior-medial contact centers in normal tibiotalar joint, respectively; and the force center was in anterior-lateral part, just near the center of tibiotalar joint. While the fibula was preserved, the force center transferred laterally with increased varus angles; and the force center transferred medially with increased valgus angles. However, the force center transferred oppositely to the medial part with increased varus angles, and laterally with increased valgus angles after fibular osteotomy. Conclusion: Fibular osteotomy facilitates the tibiotalar contact pressure translation, and is helpful for ankle joint realignment in suitable cases.


1963 ◽  
Vol 68 ◽  
pp. 84 ◽  
Author(s):  
P. A. Lagerstrom ◽  
J. Kevorkian
Keyword(s):  

2011 ◽  
Vol 107 (3) ◽  
Author(s):  
Gunnar Möller ◽  
Arkadiusz Wójs ◽  
Nigel R. Cooper
Keyword(s):  

1985 ◽  
Vol 32 (5) ◽  
pp. 1186-1197 ◽  
Author(s):  
Paul M. Fishbane ◽  
Karel Gaemers ◽  
Sydney Meshkov ◽  
Richard E. Norton
Keyword(s):  

1985 ◽  
Vol 8 (4) ◽  
pp. 398-409
Author(s):  
G. Auriemma ◽  
F. Bochicchio ◽  
A. Frenkel ◽  
F. Massa

1988 ◽  
Vol 03 (16) ◽  
pp. 1561-1568 ◽  
Author(s):  
ERNEST MA ◽  
GWO-GUANG WONG

A gluino can decay into a color-singlet neutral fermion [Formula: see text] by radiating off a gluon. We study this process in a minimal supersymmetric extension of the standard model. A significant branching fraction is possible depending on how much [Formula: see text] overlaps with the Higgs fermion which couples to the t quark and the mass of the t quark itself.


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