Results 71 to 80 of about 96,520 (257)

Mathematical model for isometric and isotonic muscle contractions

Journal of Theoretical Biology, 2017
A new mathematical model is presented to describe both the active and passive mechanics of muscles. In order to account for the active response, a two-layer kinematics that introduces both the visible and rest lengths of the muscle is presented within a rational mechanics framework.
De Vita, R. Grange, Nardinocchi P, Teresi L.   +3 more
openaire   +6 more sources

On Non‐Compact Extended Bach Solitons

Mathematische Nachrichten, EarlyView.
ABSTRACT We study the characterization of non‐compact solitons of the extended Bach flow, known as an extended Bach soliton. We prove that a weakly conformally flat extended Bach soliton (Mn,g,V)$(M^n,g,V)$ with harmonic Weyl tensor is Bach‐flat and the potential vector field V$V$ is conformal.
Rahul Poddar
wiley   +1 more source

Rehabilitation and return to activity after platelet‐rich plasma injections in chronic tendinopathies: Consensus from international experts

PM&R, EarlyView.
Abstract Background The effectiveness of platelet‐rich plasma (PRP) injections in chronic tendinopathies remains debated. Although the product's characteristics play a role, the impact of postinjection recommendations remains poorly investigated. Objective To establish principles and guidelines for post‐PRP injection rehabilitation and return to ...
Vincent Gremeaux, Martin Lamontagne, Valérie Bélanger, Etienne Dalmais, Eric Noël, Alain Frey, Paul Ornetti, Fadoua Allali, Jimmy Gross, F. Michel, Hervé Bard, Jean‐François Kaux, the GRIIP (Groupe de Recherche International sur les Injections de Plaquettes; International Research Group on Platelet Injections)   +12 more
wiley   +1 more source

Characterization of Structure, Properties, and Energetic Performance of a 1:1 Ammonium Dinitramide‐3,4‐Diaminofurazan Cocrystal

Propellants, Explosives, Pyrotechnics, EarlyView.
Ammonium dinitramide (ADN) and 3,4‐Diaminofurazan (DAF) form a 1:1 energetic cocrystal. We report its crystal structure and spectroscopic signature and evaluate thermal stability, decomposition behavior, hygroscopicity, and combustion properties. Propellant performance calculations benchmark the material against guanylurea dinitramide (GuDN) and ...
Peter Schultz, Uwe Schaller, Thomas Heintz   +2 more
wiley   +1 more source

Operator Positivity and Analytic Models of Commuting Tuples of Operators

, 2016
We study analytic models of operators of class $C_{\cdot 0}$ with natural positivity assumptions. In particular, we prove that for an $m$-hypercontraction $T \in C_{\cdot 0}$ on a Hilbert space $\mathcal{H}$, there exists a Hilbert space $\mathcal{E ...
Bhattacharjee, Monojit, Sarkar, Jaydeb
core   +1 more source

Computational Mechanics Model to Evaluate the Structural Maintenance of Catenated Hydrogen‐Bonded Organic Frameworks

Small, EarlyView.
This study presents a computational framework treating crystalline HOFs as adaptive atomic‐scale interfaces. Catenated HOFs preserve lattice stability under load while enabling auxetic deformation and reversible nonlinearity. The results provide direct evidence that supramolecular interactions govern macroscopic resilience and structural adaptability ...
Byeonghwa Goh, Joonmyung Choi
wiley   +1 more source

Nonlinear analysis of flat post‐tensioned concrete slab–edge column connections

Structural Concrete, EarlyView.
Abstract This study presents nonlinear finite element analyses to investigate the punching shear behavior of unbonded post‐tensioned concrete flat slabs at slab‐edge column connections. A parametric analysis was conducted to evaluate the influence of four critical parameters on the punching shear resistance: the distribution of prestressing tendons ...
Igor Gonçalves, Ricardo Randi, Orlando M. Almeida, Elyson A. P. Liberati, Leandro M. Trautwein   +4 more
wiley   +1 more source

Sperm Transfer Under Behavioral and Morphological Constraints in the Orb‐Web Spider Genus Argiope

Integrative Zoology, EarlyView.
The polygamous mating system of the orb‐web spider genus Argiope provides a model to study the evolution of sperm transfer under morphological and behavioral constraints. This helps us to understand how male and female behavioral and morphological reproductive traits influence sperm transfer.
Chathuranga Dharmarathne, Donald J. McLean, Peter Michalik, M. E. Herberstein   +3 more
wiley   +1 more source

An intracellular recombinant single‐chain variable antibody fragment as a new class of phosphodiesterase type 5 inhibitors

British Journal of Pharmacology, EarlyView.
Background and Purpose Cyclic guanosine monophosphate (cGMP) is a ubiquitous second messenger involved in human (patho‐)physiology. Phosphodiesterase 5 (PDE5) is a major cGMP hydrolyzing enzyme in many cell types including vascular smooth muscle cells (VSMCs). Several highly selective PDE5 inhibitors are in clinical use. However, there are currently no
Kürsat Kirkgöz, Sophie Sprenger, Olga Schweigert, Sanika Mohagaonkar, Matti Walsdorff, Tanja Zeller, Filip Berisha, Viacheslav O. Nikolaev, Sergei D. Rybalkin   +8 more
wiley   +1 more source

Torque Regulation Is Influenced by the Nature of the Isometric Contraction. [PDF]

Sensors (Basel), 2023
Bauer P, Gomes JS, Oliveira J, Santos P, Pezarat-Correia P, Vaz JR.   +5 more
europepmc   +1 more source