Results 41 to 50 of about 1,259,164 (149)

A Trade-Off between Mechanical Strength and Erosive Wear Resistance in AlSi12CuMgNi Alloy Used to Manufacture Fan Blades for Underground Mines

open access: yesMetals, 2019
The axial fan blades used in underground mines are usually manufactured in AlSi12CuMgNi alloy (EN AC 48000). They must have a high mechanical strength to withstand the stresses resulting from the rotation speed of the rotor and a high resistance to ...
Florentino Alvarez-Antolin   +4 more
doaj   +1 more source

The textbook “Didáctica de la Matemática Eurística” from Pedro Puig Adam

open access: yes, 2021
The “Didáctica Matemática Eurística” is a textbook that shows the great teaching work of Professor Pedro Puig Adam in Sapin, In this document we analyze the lesson from the point of view of the didactics of mathematics. The mathematical content of the lessons corresponds to the Spain baccaulaureate in the mid-20th century.
Astudillo, Maria Teresa González   +1 more
openaire   +1 more source

Diagnostic performance of plasma Aβ42/40 ratio, p‐tau181, GFAP, and NfL along the continuum of Alzheimer's disease and non‐AD dementias: An international multi‐center study

open access: yesAlzheimer's &Dementia, Volume 21, Issue 6, June 2025.
Abstract INTRODUCTION Plasma phosphorylated tau (p‐tau)181, glial fibrillary acidic protein (GFAP), neurofilament light chain (NfL), and amyloid beta ratio (Aβ42/40) may have diagnostic and prognostic value in Alzheimer's disease (AD). Here we assess which markers can best identify AD from controls and other non‐AD dementias in a large international ...
James D. Doecke   +35 more
wiley   +1 more source

Closing the air gap: the use of drones for studying wildlife ecophysiology

open access: yesBiological Reviews, Volume 100, Issue 3, Page 1206-1228, June 2025.
ABSTRACT Techniques for non‐invasive sampling of ecophysiological data in wild animals have been developed in response to challenges associated with studying captive animals or using invasive methods. Of these, drones, also known as Unoccupied Aerial Vehicles (UAVs), and their associated sensors, have emerged as a promising tool in the ecophysiology ...
Adam Yaney‐Keller   +3 more
wiley   +1 more source

Modal Participation Estimated from the Response Correlation Matrix

open access: yesShock and Vibration, 2019
In this paper, we are considering the case of estimating the modal participation vectors from the operating response of a structure. Normally, this is done using a fitting technique either in the time domain using the correlation function matrix or in ...
Rune Brincker   +3 more
doaj   +1 more source

Las ideas sobre la educación matemática de Pedro Puig Adam ¿precursoras de la Matemática Moderna?

open access: yesQuadrante - Revista de Investigação em Educação Matemática, 2008
Quadrante, Vol. 17 N.º 1 (2008)
openaire   +3 more sources

Tribological Performance of an Automatic Transmission Fluid Additized with a Phosphonium-Based Ionic Liquid Under Electrified Conditions

open access: yesLubricants
This study explores the impact of a phosphonium-based IL (trihexyltetradecylphosphonium bis(2-ethylhexyl) phosphate, [P6,6,6,14][BEHP])) on the tribological performance of an automatic transmission fluid (ATF) when used as an additive. Tests were carried
Alejandro García Tuero   +3 more
doaj   +1 more source

One-Step FE Model Updating Using Local Correspondence and Mode Shape Orthogonality

open access: yesShock and Vibration, 2019
In this paper, it is described how the matrix mixing model updating technique can be combined with the local correspondence (LC) mode shape expansion algorithm, to give a new finite element (FE) model updating method.
Martin Ø. Ø. Jull   +5 more
doaj   +1 more source

Surgical site infection after gastrointestinal surgery in children: an international, multicentre, prospective cohort study

open access: yesBMJ Global Health, 2020
Introduction Surgical site infection (SSI) is one of the most common healthcare-associated infections (HAIs). However, there is a lack of data available about SSI in children worldwide, especially from low-income and middle-income countries.
Nebyou Seyoum   +1632 more
doaj   +1 more source

Aero‐Circularity: Charting the Flight Path Between Circular Economy and Sustainability Performance

open access: yesBusiness Strategy and the Environment, Volume 34, Issue 4, Page 4766-4784, May 2025.
ABSTRACT The aircraft manufacturing industry faces a critical juncture due to the necessity to replace ageing fleets and address the environmental impact of the industry dimension. The high demand for new aircraft and limited production capacity has driven industry leaders to integrate Circular Economy (CE) principles into their manufacturing and ...
Aitor Salesa   +2 more
wiley   +1 more source

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