Results 31 to 40 of about 1,654 (186)

Darstellung und Kristallstruktur von Arsen(III)phosplior(V)oxid, AsPO4 / Preparation and Crystal Structure of Arsenic(III) Phosphorus(V) Oxide, AsPO4 [PDF]

open access: hybridZeitschrift für Naturforschung B, 1982
Abstract The compound ASPO4 was prepared from AS2O3 and P2O5 in a sealed tube at 673 K. The crystal structure, isostructural with AsO2, was refined to R = 0.021 [Pnma, a - 843.15(10), b = 502.29(10), c = 720.39(12) pm, Z = 4]. The structure consists of infinite layers.
Doris Bodenstein   +4 more
openalex   +2 more sources

How much oil remains for the world to produce? Comparing assessment methods, and separating fact from fiction

open access: yesCurrent Research in Environmental Sustainability, 2022
This paper assesses how much oil remains to be produced, and whether this poses a significant constraint to global development. We describe the different categories of oil and related liquid fuels, and show that public-domain by-country and global proved
Jean Laherrère   +2 more
doaj   +1 more source

Calculations of fluid-mineral equilibria in the Aspo Hard Rock Laboratory [PDF]

open access: green, 1995
The purpose of this report is to evaluate the utility of the EQ3/6 geochemical codes in describing mineral-fluid equilibria in the low temperature (
C.J. Bruton
openalex   +4 more sources

Fossil Fuels, Let’s Leave Them under Earth. Four Reasons to Vote “Yes” at the Italian Referendum on Drilling

open access: yesChallenges, 2016
The referendum that will be held on 17 April 2016 is calling Italians to express their willingness on an aspect of licensing the sea drilling activities: The end of the licenses to the offshore exploitation of fossil fuel resources within the 12 miles ...
ASPO Italy Association for the Study of PeakOil And Gas
doaj   +1 more source

El encuentro pedagógico. En busca de mediaciones que potencien presencias

open access: yesRevista Iberoamericana de Tecnología en Educación y Educación en Tecnología, 2021
El presente texto propone reflexionar sobre el encuentro pedagógico en sus posibilidades de potenciar la efectiva presencia y participación de quienes transitan una experiencia educativa.
Ana María Viscaino
doaj   +1 more source

Exposición a pantallas en niñas, niños y adolescentes: recomendaciones, límites y controversias en el marco del distanciamiento social obligatorio. Un estudio cualitativo.

open access: yesRevista del Hospital Italiano de Buenos Aires, 2023
Introducción: la utilización de pantallas durante la niñez y la preocupación por su potencial daño aumentaron en los últimos años. La recomendación de no superar dos horas diarias de uso resultó controvertida durante la pandemia por COVID-19.
Leticia Gavoto   +4 more
doaj   +1 more source

Una mirada sobre el espacio de la Extensión

open access: yesExtensión en Red, 2023
Este trabajo tiene como propósito compartir las reflexiones realizadas sobre la construcción de los espacios de la extensión durante la pandemia y las situaciones de ASPO y DISPO.
Maria Fabiana Vidal
doaj   +1 more source

Cognitive reserve, cortisol, and Alzheimer's disease biomarkers: A memory clinic study. [PDF]

open access: yesAlzheimers Dement
Abstract INTRODUCTION Cognitive reserve might mitigate the risk of Alzheimer's dementia among memory clinic patients. No study has examined the potential modifying role of stress on this relation. METHODS We examined cross‐sectional associations of the cognitive reserve index (CRI; education, occupational complexity, physical and leisure activities ...
Yerramalla MS   +10 more
europepmc   +2 more sources

Research on assembly sequence planning and optimization of precast concrete buildings

open access: yesJournal of Civil Engineering and Management, 2018
Due to more complex structure and increasing prefabrication rate of precast concrete buildings, the assembly order between their constituent components is getting more and more attention. In order to solve the assembly sequence planning and optimization (
Yaowu Wang   +2 more
doaj   +1 more source

Revision rhinoplasty: physician–patient aesthetic and functional evaluation

open access: yesBrazilian Journal of Otorhinolaryngology, 2018
Introduction: Approximately 5–15% of patients submitted to rhinoplasty operations undergo revision surgery. Those patients have varied functional and aesthetic complaints that should receive a detailed assessment that includes all the expectations the ...
Heloisa Nardi Koerner Vian   +3 more
doaj   +1 more source

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