Results 111 to 120 of about 640,777 (319)

Heterostructure‐Specific Toughening Mechanisms in Metallic Laminates

open access: yesAdvanced Engineering Materials, EarlyView.
This study highlights how various aspects of the heterostructural design of metallic laminates can be specifically tailored to achieve improved fracture resistance for damage‐tolerant designs of cyclically stressed components. Based on results from in situ fatigue crack growth tests, a comprehensive overview of the formation and development of ...
Philip Manuel Pohl   +5 more
wiley   +1 more source

Some Fuzzy Inequalities for Harmonically s-Convex Fuzzy Number Valued Functions in the Second Sense Integral [PDF]

open access: gold, 2022
Jorge E. Macías‐Díaz   +3 more
openalex   +1 more source

Arithmetic theory of harmonic numbers [PDF]

open access: yesProceedings of the American Mathematical Society, 2011
Harmonic numbers H k = ∑ 0 > j ⩽ k 1 / j   ( k = 0 , 1 , 2 , … ) H_{k}=\sum _{0 ...
openaire   +2 more sources

Deciphering the Origin of Higher Shell Coordination on Single Iron Catalysts for Resilient Modulating Persulfate Oxidation Into Singlet Oxygen Pathway

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
This study reveals that higher shell S coordination can effectively modulate the spin state of FeN4 site via long‐range electronic interactions, giving rise to the oriented generation of singlet oxygen from peroxymonosulfate activation. Abstract Precise manipulation of coordination structure of single‐atom sites and establishment of schematic ...
Liang Zhang   +8 more
wiley   +1 more source

Some identities associated with degenerate harmonic and hyperharmonic numbers

open access: yesMathematical and Computer Modelling of Dynamical Systems
The study of degenerate versions of special polynomials and numbers has seen significant progress in recent years. In this paper, we establish several identities involving degenerate harmonic and hyperharmonic numbers, which are degenerate versions of ...
Qixiang Wang   +4 more
doaj   +1 more source

On Spieß’s conjecture on harmonic numbers

open access: yesDiscrete Applied Mathematics, 2013
Let H"n be the n-th harmonic number and let H"n^(^2^) be the n-th generalized harmonic number of order two. Spiesz proved that for a nonnegative integer m and for t=1,2, and 3, the sum R(m,t)[email protected]?"k"="0^nk^mH"k^t can be represented as a polynomial in H"n with polynomial coefficients in n plus H"n^(^2^) multiplied by a polynomial in n.
Lisa H. Sun, Hai-Tao Jin
openaire   +2 more sources

Optical Control of the Thermal Conductivity in BaTiO3

open access: yesAdvanced Functional Materials, EarlyView.
Light‐driven manipulation of thermal conductivity in archetypal ferroelectric, BaTiO3, offers a novel and effective approach for the dynamical control of the heat flux, with potential applications in thermal management and phonon‐based logic. Abstract Achieving dynamic control over thermal conductivity remains a formidable challenge in condensed matter
Claudio Cazorla   +4 more
wiley   +1 more source

A NEW STRUCTURE OF FIVE-LEVEL DIODE CLAMPED INVERTER WITH REDUCING ITS ELEMENTS

open access: yesMağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2018
At the high power switching circuit's applications, when the harmonic distortion is harmful, a multi-level diode clamped inverter is useful, especially when reduced total harmonic distortion and high power are desired.
Othman M. Anssari
doaj   +1 more source

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