Results 81 to 90 of about 1,139,400 (279)

Vibration In Nanoplates [PDF]

open access: yesNanoscale and Advanced Materials
This article attempts to study the vibration characteristics of four kinds of nanoplate using the modified couple stress theory. The modified couple stress theory, which has only one length scale parameter, has been used to consider the small-scale ...
Majid Eskandari Shahraki   +3 more
doaj   +1 more source

Effect of Thrust on the Structural Vibrations of a Nonuniform Slender Rocket

open access: yesMathematical and Computational Applications, 2020
The vibration characteristics of a nonuniform, flexible and free-flying slender rocket experiencing constant thrust is investigated. The rocket is idealized as a classic nonuniform beam with a constant one-dimensional follower force and with free-free ...
Desmond Adair   +2 more
doaj   +1 more source

Vacancy‐Driven Ni Exsolution in Prussian Blue Analogues Creates Cooperative Defect–Metal Sites for Alkaline Hydrogen Evolution

open access: yesAdvanced Science, EarlyView.
Multimetal Prussian blue analogues (PBAs) are converted by low‐temperature Ar annealing into a cavity/CN‐vacancy architecture that triggers in situ Ni exsolution, creating dense Ni‐PBA interfacial motifs. These motifs optimize water dissociation and H* adsorption in alkaline media, delivering markedly accelerated HER kinetics and long‐term stability ...
Shiqi Wang   +5 more
wiley   +1 more source

Hamilton's missing link

open access: yes, 2007
Hamilton's famous rule was presented in 1964 in a paper called "The genetical theory of social behaviour (I and II)", Journal of Theoretical Biology 7, 1-16, 17-32. The paper contains a mathematical genetical model from which the rule supposedly follows,
van Veelen, C.M.
core   +1 more source

A Pathology‐Instructed Theranostic Platform with Mechanoadaptive and ROS‐Powered Nanobreathing Functions for Precision Myocardial Repair

open access: yesAdvanced Science, EarlyView.
We developed a pH responsive theranostic serum albumin hydrogel named BST, functionalized with MRI and CT probes and loaded with mitochondria targeted CAT‐SOD nanogels, that rapidly self repairs and mechanically stabilizes the infarcted myocardium, releases therapeutic nanogels and albumin under hypoxia induced acidosis to clear mitochondrial ROS ...
Zheng Luo   +7 more
wiley   +1 more source

Quantization of the Hamilton equations of motion

open access: yesPhysica Scripta
Abstract One of the fundamental problems in quantum mechanics is finding the correct quantum image of a classical observable that would correspond to experimental measurements. We investigate for the appropriate quantization rule that would yield a Hamiltonian that obeys the quantum analogue of Hamilton’s equations of motion, which ...
Ramon Jose C Bagunu, Eric A Galapon
openaire   +2 more sources

Halide Perovskite: A Rich Source of Thermal Insulator

open access: yesAdvanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye   +3 more
wiley   +1 more source

PENGGUNAAN HAMILTON'S PRINCIPLE UNTUK MEMPEROLEH GOVERNING EQUATIONS : PERMASALAHAN MEKANIKA SOLID ELASTIK LINEAR

open access: yes, 2003
Dalam penyelesaian masalah mekanika pada material dapat dilakukan dengan Mathematics Analysis maupun dengan Numerical Analysis. Dengan menggunakan solusi ini maka harus ditentukan dahulu Constitutive Equations sebelum menentukan Governing Equations-nya ...

core  

Quantitative genetic versions of Hamilton's rule with empirical applications [PDF]

open access: yes, 2014
Hamilton's theory of inclusive fitness revolutionized our understanding of the evolution of social interactions. Surprisingly, an incorporation of Hamilton's perspective into the quantitative genetic theory of phenotypic evolution has been slow, despite ...
Wolf, J.B.   +3 more
core   +1 more source

Free flexural vibrations of standard wide-flange H-beams with consideration of the shear effect

open access: yesPojazdy Szynowe
The subject of the paper is a simply supported standard wide-flange H-beam. Cross sections of this beam is analytically described as a three-layer structure.
Krzysztof Magnucki
doaj   +1 more source

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