Results 41 to 50 of about 9,873,801 (377)

Extension of the QuickFF force field protocol for an improved accuracy of structural, vibrational, mechanical and thermal properties of metal-organic frameworks [PDF]

open access: yes, 2018
QuickFF was originally launched in 2015 to derive accurate force fields for isolated and complex molecular systems in a quick and easy way. Apart from the general applicability, the functionality was especially tested for metal-organic frameworks (MOFs),
Van Speybroeck, Veronique   +5 more
core   +2 more sources

Experimental assessment for non-monolithic slab-column connections

open access: yesAin Shams Engineering Journal, 2021
It is common practice to use non-monolithic connections to connect the new flat slabs to the existing columns for upgrading the stories number of the existing buildings, despite the lack of design guidelines for the non-monolithic connection.
Ahmed Abdel-hady   +3 more
doaj   +1 more source

Relativity and Accelerator Engineering [PDF]

open access: yes, 2017
From a geometrical viewpoint, according to the theory of relativity, space and time constitute a four-dimensional continuum with pseudo-Euclidean structure. This has recently begun to be a practically important statement in accelerator physics.
Geloni, Gianluca   +2 more
core   +1 more source

Unification of the four forces in the Spin(11,1) geometric algebra

open access: yesPhysica Scripta, 2023
Abstract SO(10), or equivalently its covering group Spin(10), is a well-known promising grand unified group that contains the standard-model group. The spinors of the group Spin(N) of rotations in N spacetime dimensions are indexed by a bitcode with [N/2] bits. Fermions in Spin(10) are described by five bits yzrgb, consisting of two weak
Andrew J S Hamilton, Tyler McMaken
openaire   +2 more sources

Full and half-wavelength ultrasonic percussive drills [PDF]

open access: yes, 2018
Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick   +2 more
core   +1 more source

Improved side-chain torsion potentials for the Amber ff99SB protein force field

open access: yesProteins: Structure, Function, and Bioinformatics, 2010
Recent advances in hardware and software have enabled increasingly long molecular dynamics (MD) simulations of biomolecules, exposing certain limitations in the accuracy of the force fields used for such simulations and spurring efforts to refine these ...
K. Lindorff‐Larsen   +6 more
semanticscholar   +1 more source

Structural and functional asymmetry of the lower limb related to gravitational acceleration tolerance

open access: yesiScience
Summary: This study investigates the physiological effects of intensive physical training on femoral cartilage morphology and limb asymmetry in strength in air force cadets.
Jun-Young Sung, In-Ki Kim, Kyu-Lim Lee
doaj   +1 more source

Effects of Four Types of Pre-swirls on the Leakage, Flow Field, and Fluid-Induced Force of the Rotary Straight-through Labyrinth Gas Seal

open access: yesChinese Journal of Mechanical Engineering, 2019
The labyrinth seal in turbomachinery is a key element that restricts leakage flow among rotor-stator clearances from high-pressure regions to low-pressure regions.
Qingfeng Wang, Lidong He
doaj   +1 more source

Relativistic Linear Restoring Force

open access: yes, 2012
We consider two different forms for a relativistic version of a linear restoring force. The pair comes from taking Hooke's law to be the force appearing on the right of the relativistic expressions: dp/dt or dp/dtau .
Clark, D., Franklin, J., Mann, N.
core   +1 more source

Muscle Force-Velocity Relationships Observed in Four Different Functional Tests

open access: yesJournal of Human Kinetics, 2017
The aims of the present study were to investigate the shape and strength of the force-velocity relationships observed in different functional movement tests and explore the parameters depicting force, velocity and power producing capacities of the tested
Milena Živković   +4 more
semanticscholar   +1 more source

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