Results 61 to 70 of about 398,264 (269)

Transformada em ondeleta: uma necessidade

open access: yesRevista Brasileira de Ensino de Física
O objetivo deste trabalho é demonstrar, dentro de um contexto histórico, a necessidade de se usar a transformada em ondeletas. Experimentos computacionais simples são usados para explicar o surgimento desta ferramenta matemática.
Maurício José Alves Bolzan
doaj   +1 more source

Multiscale Fourier Landscape Pattern Indices For Landscape Ecology

open access: yesJournal of Landscape Ecology, 2018
A factor analysis of 67 landscape pattern metrics was performed to quantify the ability of landscape pattern metrics to explain land cover pattern, and to report individual landscape pattern metric values that are statistically independent.
Spivey Alvin, Vodacek Anthony
doaj   +1 more source

Influence de l'altitude, de l'exposition et du climat sur la croissance du pin à crochets (Pinus uncinata Ram.) en Cerdagne (Pyrénées orientales françaises)

open access: yesPirineos: Revista de Ecología de Montaña, 1995
[fr] Une étude dendroécologique du Pin á crochets (Pinus uncinata Ram.) réalisée en Cerdagne française (Pyrénées Orientales) a permis de quantifier le rôle de trois facteurs stationnais sur sa croissance: l'altitude, l'exposition et le climat. 175 arbres
Jeanne Florence Schueller   +1 more
doaj   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Le phalanstère et l’intégration sociale de l’indocilité enfantine

open access: yesMateriales para la Historia del Deporte
Critique acerbe de la civilisation, période sociale qui lui est contemporaine, Fourier s’attaque avec la même vigueur au système éducatif qui la soutient.
Boiston Rémy
doaj   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou   +3 more
wiley   +1 more source

Cyst Detection in Toxoplasma gondii Infected Mice and Rats Brain

open access: yesBio-Protocol, 2015
Toxoplasmosis caused by the intracellular parasite Toxoplasma gondii, is characterized by a life-long chronic infection. The parasite is an efficient neurotropic infectious agent that establishes its “safe” life by forming intracellular cysts in ...
Valeria Bellini   +4 more
doaj   +1 more source

Very special algebraic groups

open access: yesComptes Rendus. Mathématique, 2020
We say that a smooth algebraic group $G$ over a field $k$ is very special if for any field extension $K/k$, every $G_K$-homogeneous $K$-variety has a $K$-rational point. It is known that every split solvable linear algebraic group is very special.
Brion, Michel, Peyre, Emmanuel
doaj   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

Time-Dependent Influence Measurement in Citation Networks

open access: yesComplex Systems Informatics and Modeling Quarterly, 2018
In every scientific discipline, researchers face two common dilemmas: where to find bleeding-edge papers and where to publish their own articles. We propose to answer these questions by looking at the influence between communities, e.g.
Monika Ewa Rakoczy   +3 more
doaj   +1 more source

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