Results 71 to 80 of about 294,240 (266)

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

Particle Swarm Optimization with Stretching and Clustering for Asset Allocation

open access: yesInternational Journal of Financial Studies
This paper develops a novel hybrid framework that integrates clustering-enhanced Particle Swarm Optimization (PSO) with stretching techniques to solve Markowitz’s quadratic portfolio optimization problem.
Julien Chevallier
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak   +3 more
wiley   +1 more source

Effect of Bosu Ball Exercises on Menstrual Low Back Pain in Young Females with 18−25 Years of Age: A Randomized Controlled

open access: yesJournal of the Scientific Society
Introduction: Pain in lower back region just before the onset of menstruation and during menstruation is a very common complaint by females in their reproductive age.
Rajeshree Rathi, Arati Mahishale
doaj   +1 more source

Comparison of the Effect of TECAR Therapy and Static Stretching on Hamstring Flexibility in Male Athletes

open access: yesMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, 2021
BACKGROUND AND OBJECTIVE: The hamstring muscle is one of the muscles with a high risk of injury due to loss of flexibility. Using deep heat modalities is one way to improve muscle flexibility. Given that TECAR therapy is a new way to produce heat in deep
P Mohamadi   +4 more
doaj  

On-line bin-stretching

open access: yesTheoretical Computer Science, 1998
We are given a sequence of items that can be packed into \(m\) unit size bins. In the classical bin packing problem we fix the size of the bins and try to pack the items in the minimum number of such bins. In contrast, in the bin-stretching problem we fix the number of bins and try to pack the items while stretching the size of the bins as least as ...
Yossi Azar, Oded Regev 0001
openaire   +2 more sources

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

Optimizing joint mobility and muscle elasticity through gymnastics exercises at high school students

open access: yesAnnals of the “Ştefan cel Mare” University: Physical Education and Sport Section - The Science and Art of Movement
This study evaluated the effectiveness of integrating specific gymnastic exercises and active-dynamic/PNF stretching into high school PE to enhance joint mobility and muscle elasticity.
Moncea Constantin Emilian   +1 more
doaj   +1 more source

A Novel Assessment of Flexibility by Microcirculatory Signals

open access: yesSensors, 2013
Flexibility testing is one of the most important fitness assessments. It is generally evaluated by measuring the range of motion (RoM) of body segments around a joint center.
Jian-Guo Bau   +4 more
doaj   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

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