Results 101 to 110 of about 2,812 (235)

From signal processing of telecommunication signals to high pulse energy lasers: the Mamyshev regenerator case

open access: yesNanophotonics
We look back at many challenges as well as unexpected successes encountered by the Mamyshev optical regenerator, which combines spectral broadening from self-phase modulation followed by offset bandpass filtering.
Finot Christophe, Rochette Martin
doaj   +1 more source

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

open access: yesAdvanced Engineering Materials, Volume 27, Issue 20, October 2025.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries   +3 more
wiley   +1 more source

Generational effects in Down syndrome: Enriched environment enhances functionality without reducing Alzheimer's disease risk

open access: yesAlzheimer's &Dementia, Volume 21, Issue 10, October 2025.
Abstract INTRODUCTION Down syndrome (DS) is the leading cause of intellectual disability (ID) and a genetic form of Alzheimer's disease (AD). We wanted to assess whether generational changes have induced (1) milder ID with greater independence and (2) delayed AD diagnosis.
Lídia Vaqué‐Alcázar   +17 more
wiley   +1 more source

Differential forms in Carnot groups: a variational approach

open access: yesBruno Pini Mathematical Analysis Seminar, 2011
Carnot groups (connected simply connected nilpotent stratified Lie groups) can be endowed with a complex of ``intrinsic'' differential forms. In this paper we want to provide an evidence of the intrinsic character of Rumin's complex, in the spirit of the
Annalisa Baldi
doaj  

Rigidity of quasiconformal maps on Carnot groups [PDF]

open access: yesMathematical Proceedings of the Cambridge Philosophical Society, 2016
AbstractWe show that quasiconformal maps on many Carnot groups must be biLipschitz. In particular, this is the case for 2-step Carnot groups with reducible first layer. These results have implications for the rigidity of quasiisometries between negatively curved solvable Lie groups.
openaire   +3 more sources

Body mass index and blood volume influence plasma biomarkers and positron emission tomography classification in preclinical Alzheimer's disease

open access: yesAlzheimer's &Dementia, Volume 21, Issue 10, October 2025.
Abstract INTRODUCTION Blood‐based biomarkers (BBMs) are promising tools for Alzheimer's disease (AD) diagnosis, but their accuracy may be affected by body mass index (BMI) and blood volume (BV) through dilution. We investigated how BMI and BV influence BBM concentrations and PET prediction.
Tovia Jacobs   +18 more
wiley   +1 more source

Comparing three possible hypoelliptic Laplacians on the 5-dimensional Cartan group via div-curl type estimates

open access: yesAdvanced Nonlinear Studies
On general Carnot groups, the definition of a possible hypoelliptic Hodge-Laplacian on forms using the Rumin complex has been considered in (M. Rumin, “Differential geometry on C-C spaces and application to the Novikov-Shubin numbers of nilpotent Lie ...
Baldi Annalisa, Tripaldi Francesca
doaj   +1 more source

Genome-wide association and Mendelian randomisation analysis provide insights into the pathogenesis of heart failure

open access: yesNature Communications, 2020
Heart failure is a complex syndrome that is associated with many different underlying risk factors. Here, to increase power, the authors jointly analyse cases of heart failure of different aetiologies in a genome-wide association study and identify 11 ...
Sonia Shah   +146 more
doaj   +1 more source

Double ball property: an overview and the case of step two Carnot groups

open access: yesBruno Pini Mathematical Analysis Seminar, 2012
We investigate the notion of the so-called Double Ball Property, which concerns the nonnegative sub-solutions of some differential operators. Thanks to the axiomatic approach developed in [6], this is an important tool in order to solve the Krylov ...
Giulio Tralli
doaj  

Recent Trends in Conjugated Polymer‐Based Thermoelectrics From Materials to Device

open access: yesEcoMat, Volume 7, Issue 10, October 2025.
Conjugated polymers (CPs) have shown dramatic advances in their thermoelectric (TE) power factor over the past decades, enabling biocompatible, solution‐processable, lightweight, and deformable (flexible/stretchable) TE generators. Material engineering principles have played an essential role in the remarkable improvements in power factor, including ...
Daegun Kim   +5 more
wiley   +1 more source

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