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Contact Hamiltonian mechanics [PDF]

open access: yesAnnals of Physics, 2017
In this work we introduce contact Hamiltonian mechanics, an extension of symplectic Hamiltonian mechanics, and show that it is a natural candidate for a geometric description of non-dissipative and dissipative systems. For this purpose we review in detail the major features of standard symplectic Hamiltonian dynamics and show that all of them can be ...
Bravetti A, Cruz H, Tapias D
openaire   +5 more sources

Contact geometry and quantum mechanics

open access: yesPhysics Letters B, 2018
We present a generally covariant approach to quantum mechanics in which generalized positions, momenta and time variables are treated as coordinates on a fundamental “phase-spacetime”.
Gabriel Herczeg, Andrew Waldron
doaj   +4 more sources

Asynchronous Variational Contact Mechanics [PDF]

open access: yesComputer Methods in Applied Mechanics and Engineering, 2010
An asynchronous, variational method for simulating elastica in complex contact and impact scenarios is developed. Asynchronous Variational Integrators (AVIs) are extended to handle contact forces by associating different time steps to forces instead of ...
Grinspun, Eitan   +3 more
core   +5 more sources

Placing the transtibial centralisation stitch at the posterior horn of the medial meniscus best restores tibiofemoral contact mechanics and extrusion following medial meniscus posterior root tears: An in vitro biomechanical study using porcine knee joints [PDF]

open access: yesJournal of Experimental Orthopaedics
Purpose To evaluate whether the position of the transtibial centralisation tunnel, on the background of an anatomical transtibial pull‐through root repair (ATPR), affects the tibiofemoral contact mechanics and meniscal extrusion for medial meniscus ...
Khalis Boksh   +6 more
doaj   +2 more sources

Congruent Weber-B ankle fractures do not alter tibiotalar contact mechanics [PDF]

open access: yesScientific Reports
Current treatment strategy for managing Weber B ankle fractures is mainly governed by mortise congruency, malleolar alignment, deltoid ligament competence and fracture stability.
Matthias Peiffer   +7 more
doaj   +2 more sources

Merged contact layer in adhesion mechanics [PDF]

open access: yesE3S Web of Conferences, 2021
Predicting bond strength is the most common task in adhesion mechanics. To solve these problems, a contact layer model which describes the interaction of the substrate and adhesive layers, can be used.
Tsybin Nikita
doaj   +1 more source

Editorial for the Special Issue “Impacts of Transport Systems on Air Pollution and Human Health”

open access: yesAtmosphere, 2022
Transport systems (road, railway and aircraft traffic) are the main contributors to poor air quality in the major cities [...]
Salah Khardi, Nathalie Bernoud-Hubac
doaj   +1 more source

Correction: Sadiq et al. A Characterization and Cell Toxicity Assessment of Particulate Pollutants from Road Traffic Sites in Kano State, Nigeria. Atmosphere 2022, 13, 80

open access: yesAtmosphere, 2022
Emerging African countries are characterized by explosive population growth and urbanization, which threaten environmental sustainability. This study comparatively characterized ambient aerosols and assessed cytotoxicity to facilitate improving health ...
Aishatu Abubakar Sadiq   +9 more
doaj   +1 more source

A Characterization and Cell Toxicity Assessment of Particulate Pollutants from Road Traffic Sites in Kano State, Nigeria

open access: yesAtmosphere, 2022
Emerging African countries are characterized by explosive population growth and urbanization, which threaten environmental sustainability. This study comparatively characterized ambient aerosols and assessed cytotoxicity to facilitate improving health ...
Aishatu Abubakar Sadiq   +9 more
doaj   +1 more source

Contact mechanics model of lung lobar sliding

open access: yesApplications in Engineering Science, 2022
Lobar sliding is an often-overlooked aspect of lung mechanics that presents a potential source of variance in the lung mechanics and physiology of different subjects.
Adam E. Galloy   +3 more
doaj   +1 more source

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