Results 91 to 100 of about 95,714 (324)

Demonstração didática da interação entre correntes elétricas

open access: yesRevista Brasileira de Ensino de Física
Apresentamos a primeira experiência crucial de Ampère mostrando a interação entre dois fios metálicos conduzindo correntes elétricas. Discutimos sua importância na história da física.
M.P. Souza Filho   +3 more
doaj   +1 more source

Algorithms for Optimal Model Distributions in Adaptive Switching Control Schemes

open access: yesMachines, 2016
Several multiple model adaptive control architectures have been proposed in the literature. Despite many advances in theory, the crucial question of how to synthesize the pairs model/controller in a structurally optimal way is to a large extent not ...
Debarghya Ghosh, Simone Baldi
doaj   +1 more source

Metformin promotes mitochondrial integrity through AMPK‐signaling in Leber's hereditary optic neuropathy

open access: yesFEBS Open Bio, EarlyView.
Metformin mediates mitochondrial quality control in Leber's hereditary optic neuropathy (LHON) fibroblasts carrying mtDNA mutations. At therapeutic levels, metformin activates AMPK signaling to restore mitochondrial dynamics by promoting fusion and restraining fission, while preserving mitochondrial mass, enhancing autophagy/mitophagy and biogenesis ...
Chatnapa Panusatid   +3 more
wiley   +1 more source

Serum soluble mediator signatures of lupus nephritis: histological features and response to treatment

open access: yesArthritis Care &Research, Accepted Article.
Objective Lupus nephritis (LN) management remains challenging, and novel noninvasive biomarkers are needed. This study quantified serum soluble mediators in the Accelerating Medicines Partnership (AMP) LN cohort to identify biomarkers of histological features and treatment response.
Andrea Fava   +26 more
wiley   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Evaluation program for secondary spacecraft cells. Initial evaluation tests of General Electric Company standard and teflonated negative electrode 20.0 ampere-hour, nickel-cadmium spacecraft cells with auxiliary electrodes [PDF]

open access: yes
The standard plate cells exhibited higher average end-of-charge (EOC) voltages than the cells with teflonated negative plates; they also delivered a higher capacity output in ampere hours following these charges.

core   +1 more source

Boundary blow-up solutions to the Monge-Ampère equation: Sharp conditions and asymptotic behavior

open access: yesAdvances in Nonlinear Analysis, 2019
Consider the boundary blow-up Monge-Ampère problem M[u]=K(x)f(u) for x∈Ω,u(x)→+∞ as dist(x,∂Ω)→0. $$\begin{array}{} \displaystyle M[u]=K(x)f(u) \mbox{ for } x \in {\it\Omega},\; u(x)\rightarrow +\infty \mbox{ as } {\rm dist}(x,\partial {\it\Omega ...
Xuemei Zhang, M. Feng
semanticscholar   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

O COOPERATIVISMO DE LEITE DA AGRICULTURA FAMILIAR NO SUDOESTE DO PARANÁ: DO PROCESSO ORGANIZACIONAL À CRISE

open access: yesInforme Gepec, 2018
O objetivo deste artigo é fazer uma análise do surgimento, ascensão, apogeu e crise das cooperativas de leite da agricultura familiar no Sudoeste do Paraná.
Leomar Rippel   +2 more
doaj   +1 more source

A quantum ampere [PDF]

open access: hybrid, 2020
Luca Callegaro
openalex   +1 more source

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