Results 71 to 80 of about 3,048,399 (301)

Statistics of the separation between sliding rigid rough surfaces: Simulations and extreme value theory approach [PDF]

, 2019
When a rigid rough solid slides on a rigid rough surface, it experiences a random motion in the direction normal to the average contact plane. Here, through simulations of the separation at single-point contact between self-affine topographies, we ...
Malthe-Sørenssen, Anders, Perret-Liaudet, Joël, Ponthus, Nicolas, Scheibert, Julien, Thøgersen, Kjetil   +4 more
core   +3 more sources

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Optimal Design of Spur Gears With Increased Contact Ratio

Journal of Mechanical Engineering
The study is devoted to optimal design of gears with profile contact ratio εα ≥ 2. Optimality criteria formulated as follows: the contact stresses in the pitch point must take a minimum value when all constraints are met, first, when the profile contact ...
Ustynenko Oleksandr, Cherelev Stanislav, Ondruška Juraj, Protasov Roman, Yepifanov Vitalii, Bondarenko Oleksiy, Andrienko Sergij   +6 more
doaj   +1 more source

General Properties of Contact Binary System for Mass Ratio Distribution [PDF]

Journal of Astronomy and Space Sciences, 1999
With a total 761 contact binary systems in Svechnikov & Kuznetsova(1990)'s cat- alogue, their physical properties by the mass ratio are inverstigated - for the early CE type with a common radiative envelope and the late CW type with a common convective ...
Kyu-Dong Oh
doaj  

Exon 7 splicing of ERα predicts poor prognosis and increases phenotypic heterogeneity in luminal a subtype breast cancer

FEBS Open Bio, EarlyView.
ERα splice variant ERα∆7 lacks the C‐terminus, and its expression may change phenotypes of breast cancers. Our results showed that ERα∆7 is found in the luminal A subtype, and elevated ERα∆7 levels are linked to improved cell survival with lower proliferation and migration.
Long Wai Tsui, Taobo Hu, Thomson Christian Husein, Wai Hei Shek, Bingrong Chen, Depeng Wang, Shu Wang, Weichuan Yu, Xiaodan Fan, Mengping Long, Toyotaka Ishibashi   +10 more
wiley   +1 more source

V717 Andromedae: An Active Low Mass Ratio Contact Binary

The Open Journal of Astrophysics
Multi-band photometric analysis of the contact binary V717 Andromedae (V717 And) is presented. The system is found to be an extreme low mass ratio system (q = 0.197) with high inclination (i = 84.5 deg), moderate degree of contact (27%) and near equal ...
Surjit S. Wadhwa, Marko Grozdanovic´, Nicholas F.H Tothill, Miroslav D. Filipovic´, Ain Y. De Horta   +4 more
doaj   +1 more source

Output Ripple Difference and Following Lightweight Design of External Gear Pumps and Motors

Jixie chuandong, 2023
In order to clarify the different output mechanism and following ripple difference between external gear pump and motor, based on the reverse design method from performance to gear parameter and special involute feature without undercut, from the contact
Wang Hao, Song Anran, Li Yulong
doaj  

Design of an advanced 500-hp helicopter transmission [PDF]

, 1983
High contact ratio spar gears planetary, spiral besel gears, bearings, investment-cast planet carrier, and investment cast stainless-steel housings are ...
Battles, R. A., Braddock, C. E.
core   +1 more source

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

FEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young, Omar Arias‐Gaguancela, Fiona Gibson, Morgan Grainger, Jodie Score, Amit Nathubhai, Mauricio Cafiero, Lee Richard Machado   +7 more
wiley   +1 more source

Finite-element analysis of contact between elastic self-affine surfaces

, 2004
Finite element methods are used to study non-adhesive, frictionless contact between elastic solids with self-affine surfaces. We find that the total contact area rises linearly with load at small loads.
B. B. Mandelbrot, F. P. Bowden, J.-F. Molinari, K. L. Johnson, L. Pei, M. O. Robbins, P. Meakin, S. Hyun, T. Belytschko, T. J. R. Hughes   +9 more
core   +1 more source