Results 41 to 50 of about 373,009 (205)

Semiconductor spintronics in a participating phonon medium: Macroscopic equations

open access: yesAIP Advances, 2013
In the last two decades considerable interest has arisen on the spin related phenomena in semiconductor devices. In semiconductor materials two essential mechanisms act on the spin dynamics: the spin-orbit coupling and the spin-flip interactions.
A. Rossani
doaj   +1 more source

Exact time evolution in harmonic quantum Brownian motion

open access: yes, 1998
We consider a particular (exactly soluble) model of the one discussed in a previous work. We show numerical results for the time evolution of the main dynamical quantities and compare them with analytical results.Comment: 7 pages, 4 figures, Revtex ...
E.T Garcia-Alvarez, F.H Gaioli, Misra
core   +1 more source

Additively Manufactured Porous Ceramics as Tunable Dielectrics for Passive Temperature Sensing

open access: yesAdvanced Materials Technologies, EarlyView.
Porous ceramic lattices, 3D‐printed from a multicomponent oxide ink, are integrated with LC resonators for passive wireless temperature sensing. By tuning porosity, the dielectric properties and RF response are engineered to produce distinct resonant frequency shifts with temperature. The results establish a structure‐driven approach to customizing the
Sogol Heidarishahrivar   +5 more
wiley   +1 more source

Dual‐Physical‐Field Nanocatalysis: Injectable Hydrogel Enables Piezo‐Photothermal Synergy for Breast Cancer Therapy

open access: yesAdvanced Science, EarlyView.
ABSTRACT Piezocatalytic therapy (PCT) harnesses mechanical energy to generate tumor‐lethal reactive oxygen species (ROS), but its efficacy is limited by rapid electron‐hole recombination and poor intratumoral retention. To overcome these limitations, we engineered heterostructured BiOCl@CuO nanosheets embedded in an injectable, conductive ...
Can Tian   +7 more
wiley   +1 more source

Langevin equation with Coulomb friction

open access: yes, 2004
We propose a Langevin model with Coulomb friction. Through the analysis of the corresponding Fokker-Planck equation, we have obtained the steady velocity distribution function under the influence of the external field.Comment: 10 pages, 1 figure.
Arfken   +9 more
core   +2 more sources

Glassy dynamics in the HMF model [PDF]

open access: yes, 2003
We discuss the glassy dynamics recently found in the meta-equilibrium quasi stationary states (QSS) of the HMF model. The relevance of the initial conditions and the connection with Tsallis nonextensive thermostatistics is also addressed.Comment: 10 ...
Abe   +11 more
core   +2 more sources

Changes in phenolic profile, physicochemical properties and sensory attributes of steamed bread fortified with golden kiwifruit (Actinidia chinensis) flour during processing

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Chinese steamed bread (CSB) is a traditional East Asian staple. Its texture and nutrition depend on the gluten and starch content of the wheat flour that it contains. Incorporation of golden kiwifruit, which is rich in dietary fiber, vitamin C, and phenolic antioxidants, offers a novel fortification strategy.
Jiecheng Li   +2 more
wiley   +1 more source

Acontece que chove ... em vista de um fim. Aristóteles, Phys. II 8, 198b16-199a8 [PDF]

open access: yesPrincípios, 2010
Aristotle’s defense of natural teleology in Physica II 8, and in particular the aporia he raises in this context with regard to the proper explanation of rainfall and the coming to be of animal parts are among the most disputed passages in the whole ...
Barbara Botter
doaj   +2 more sources

Power-Law distributions and Fisher's information measure

open access: yes, 2003
We show that thermodynamic uncertainties (TU) it preserve their form in passing from Boltzmann-Gibbs' statistics to Tsallis' one provided that we express these TU in terms of the appropriate variable conjugate to the temperature in a nonextensive context.
A Plastino   +19 more
core   +1 more source

Enhancing the Properties of PA6 and PA6/Ionomer Scraps Blend With CaCO3 Nanoparticles: Rheological, Mechanical, Thermal, and Morphological Evaluation

open access: yesPolymer Engineering &Science, EarlyView.
ABSTRACT This study investigated the effects of incorporating ionomer scraps and CaCO3 nanoparticles on the rheological, mechanical, thermal, and morphological properties of neat polyamide 6 (PA6) and a PA6/ionomer scraps (80/20) blend. The ionomer formed an immiscible dispersed phase within the PA6, acting as an impact modifier; however, it reduced ...
Roberto Alves Taveira Jr.   +2 more
wiley   +1 more source

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