Results 51 to 60 of about 31,014 (344)

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Pattern phase transitions of self-propelled particles: gases, crystals, liquids, and mills

open access: yesNew Journal of Physics, 2016
To understand the collective behaviors of biological swarms, flocks, and colonies, we investigated the non-equilibrium dynamic patterns of self-propelled particle systems using statistical mechanics methods and H -stability analysis of Hamiltonian ...
Zhao Cheng   +4 more
doaj   +1 more source

A New Understanding of the Origin of Wave-Particle Duality in Quantum Mechanics

open access: yesReports in Advances of Physical Sciences, 2021
The wave-particle duality of quantum mechanics has always been an unsolved problem in physics. This article attempts to use one of the properties to explain the other, so as to eliminate the confusion of quantum mechanics probability waves. Specifically,
Wei Fan
doaj   +1 more source

A formal framework for the study of the notion of undefined particle number in quantum mechanics [PDF]

open access: yes, 2013
It is usually stated that quantum mechanics presents problems with the identity of particles, the most radical position -supported by E. Schrodinger- asserting that elementary particles are not individuals.
Newton, da Costa, Federico, Holik
core  

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Statistical Mechanics where Newton’s Third Law is Broken

open access: yesPhysical Review X, 2015
There is a variety of situations in which Newton’s third law is violated. Generally, the action-reaction symmetry can be broken for mesoscopic particles, when their effective interactions are mediated by a nonequilibrium environment. Here, we investigate
A. V. Ivlev   +5 more
doaj   +1 more source

Particles, Objects, and Physics [PDF]

open access: yes, 2005
This thesis analyses the ontological nature of quantum particles. In it I argue that quantum particles, despite their indistinguishability, are objects in much the same way as classical particles. This similarity provides an important point of continuity
Justin C. Pniower   +2 more
core  

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Quantum aspect of the classical dynamics

open access: yesPartial Differential Equations in Applied Mathematics
We show that some quantum effects, such as the creation and annihilation of particles and the existence of dark energy, actually arise in study of known models of classical mechanics, such as the Calogero–Moser and Ruijsenaars–Schneider systems.
A.K. Pogrebkov
doaj   +1 more source

A novel approach for constructing kinetic energy operators with position dependent mass

open access: yesResults in Physics, 2019
The interest in physical systems with position-dependent mass (PDM) is always topical. In this work we present a new way to construct kinetic energy operators (KEO’s) for particles endowed with a position varying mass within the Schrödinger equation ...
Y. Chargui, A. Dhahbi, A. Trabelsi
doaj   +1 more source

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