Results 101 to 110 of about 54,190 (232)

Thermal Analysis of Phase Change Material Based Energy Storage Module With Triply Periodic Minimal Surfaces

open access: yesEnergy Storage, Volume 8, Issue 4, June 2026.
ABSTRACT The thermal performance of two triply periodic minimal surface (TPMS) thermal Energy Storage modules, Diamond and Primitive, was investigated using computational fluid dynamics. The melting and solidification behaviors, as well as the charging and discharging characteristics, of the TPMS Energy Storage units were studied for various flow rates.
Tong Su   +4 more
wiley   +1 more source

On Best Multiplier Approximation of k-Monotone by Trigonometric Polynomial

open access: yesAl-Mustansiriyah Journal of Science
The main goal of this paper is to study the degree of the best multiplier approximation of monotone unbounded functions in L_(p,λ_n)-space on the closed interval [-π,π] by means of K-functional, which we represented with, K(f,L_(p,λ_n ),W_(p,λ_n)^1,W ̃_(
Saheb K. Al-Saidy   +3 more
doaj   +1 more source

On the approximation by trigonometric polynomials in weighted Lorentz spaces

open access: yesJournal of Function Spaces and Applications, 2010
We obtain estimates of structural characteristics of 2π-periodic functions by the best trigonometric approximations in weighted Lorentz spaces, and show that the order of generalized modulus of smoothness depends not only on the rate of the best ...
Vakhtang Kokilashvili, Yunus E. Yildirir
doaj   +1 more source

Efficient Numerical Framework for Geothermal Energy Production Optimization in Fracture‐Controlled Reservoirs

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 98, Issue 6, Page 709-730, June 2026.
We introduce an efficient open‐source numerical framework for the automated search for the placements of injection and production wells in hot fracture‐controlled reservoirs that sustainably optimize geothermal energy production. We model the reservoirs as discrete fracture networks in 3D. The fluid flow and heat transport in the reservoirs are modeled
Ondřej Pártl, Ernesto Meneses Rioseco
wiley   +1 more source

A Reproducible Workflow for Modelling of 1H to 13C Polarization Transfer Kinetics Using Solid‐State NMR

open access: yesMagnetic Resonance in Chemistry, Volume 64, Issue 6, Page 532-538, June 2026.
Reproducible and open workflow for solid‐state NMR combining two key methodological approaches: (A) an adaptive bucketing approach to automatically segment spectra into chemically relevant regions; and (B) an online modelling platform that allows users to fit intensity evolution curves with multiple models. ABSTRACT Quantitative analysis of solid‐state
D. Jacob   +4 more
wiley   +1 more source

Optimal Control‐Based Generic Framework for Radiofrequency Pulse Design in MRI

open access: yesNMR in Biomedicine, Volume 39, Issue 6, June 2026.
This paper presents an open‐source Python‐based optimal control RF design framework, which can tackle various problems (short‐T2 selective excitation or B1‐robust excitation/inversion). It features three main methodological contributions: a specific cost is introduced to reduce pulse peak amplitude; consistent integration of various hard constraints on
Emilio Molina   +2 more
wiley   +1 more source

Experimental Investigations on the Energy Absorption of Aluminum TPMS Structures Under Dynamic Loading

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT Triply periodic minimal surfaces (TPMS) constitute a prominent class of cellular structures and have gained considerable attention in current research. These structures are genus‐infinite surfaces with zero mean curvature, which prevents self‐intersection. They also exhibit periodicity in all three spatial directions and exhibit enhanced multi‐
Sören Bieler   +3 more
wiley   +1 more source

Development of a Coaxial Over‐the‐Scope Bimanual Robot Enabling Lesion‐Aligned Manipulation for ESD

open access: yesThe International Journal of Medical Robotics and Computer Assisted Surgery, Volume 22, Issue 3, June 2026.
ABSTRACT Background Endoscopic Submucosal Dissection (ESD) requires high expertise as conventional endoscopes cannot provide simultaneous traction and dissection, resulting in unstable visualisation and inconsistent cutting depth. Methods A coaxial over‐the‐scope bimanual robotic system was developed to enable lesion‐aligned traction and dissection ...
Chanwoo Kim   +8 more
wiley   +1 more source

The Approximation of Functions of Several Variables with Bounded p-Fluctuation by Polynomials in the Walsh System

open access: yesMathematics
This paper presents direct and inverse theorems concerning the approximation of functions of several variables with bounded p-fluctuation using Walsh polynomials.
Talgat Akhazhanov   +2 more
doaj   +1 more source

Symbolically Regressing Fish Biomass Spectral Data: A Linear Genetic Programming Method With Tunable Primitives

open access: yesJournal of the Royal Society of New Zealand, Volume 56, Issue 3, June 2026.
Machine learning techniques play an important role in analyzing spectral data. Fish biomass spectral data is useful in fish production as it carries key chemical properties of fish meat. However, it is challenging for existing machine learning techniques to comprehensively discover hidden patterns from fish biomass spectral data because the spectral ...
Zhixing Huang   +5 more
wiley   +1 more source

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