Results 201 to 210 of about 426,690 (295)

Deutsch, Mina. Mina’s Story: A Doctor’s Memoir of the Holocaust

open access: yesCanadian Jewish Studies / Études juives canadiennes, 1997
openaire   +2 more sources

Photovoltaic Effect in a III‐IV‐V Compound Semiconductor

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
A large reduction of the GaAs band gap is obtained with incorporation of 6.5% Ge during epitaxy without introducing extended defects or composition inhomogeneity. Heterojunction solar cell devices were fabricated with 0.76‐V open circuit voltage and an internal quantum efficiency above 40% at energies below the bandgap of the GaAs emitter.
José M. Ripalda   +13 more
wiley   +1 more source

Occurrence and Morphometric Characterization of <i>Cysticercus tenuicollis</i> in Sheep From Minas Gerais, Brazil. [PDF]

open access: yesVet Med Int
Pereira CAJ   +9 more
europepmc   +1 more source

How much walking is enough for chronic low back pain? A systematic review and dose–response meta‐analysis

open access: yesPM&R, EarlyView.
Abstract Objective To determine the dose–response relationship of a walking program and compare different delivery methods of walking exercise for patients with chronic low back pain (CLBP). Methods A systematic search of PubMed/MEDLINE, Web of Science, Scopus, Embase, and the Cochrane Library was conducted from inception to October 21, 2024.
Rodrigo Núñez‐Cortés   +8 more
wiley   +1 more source

Leucaena Oil Functionalized With Osmium Tetroxide as a Precursor for Polyol‐Based Polyurethane

open access: yesJournal of Polymer Science, EarlyView.
Leucaena leucocephala seed oil is converted into a hydroxyl‐functional biopolyol through OsO4‐mediated dihydroxylation. The resulting biopolyol shows a hydroxyl number of 160–175 mg KOH g−1 and is successfully used to produce flexible, open‐cell polyurethane foams, highlighting a renewable route for converting underutilized biomass into value‐added ...
Giovanni Miraveti Carriello   +13 more
wiley   +1 more source

Comment on: Changes in microbiological characteristics of bloodstream infections before and after the COVID-19 pandemic in a tertiary teaching hospital in Iran. [PDF]

open access: yesBMC Infect Dis
Sabino SS   +7 more
europepmc   +1 more source

The most threatened plants receive the least scientific attention

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Plants sustain all life, providing the energetic and structural basis of ecosystems, but they face a growing risk of extinction. Reversing this decline requires an understanding of how scientific knowledge is distributed among species, and identification of the biases and gaps that hinder effective responses to the threats they face. However, we reveal
Renon S. Andrade   +3 more
wiley   +1 more source

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