Results 51 to 60 of about 8,599,368 (169)

Arquitectura sustentable, desarrollo experimental de un módulo habitacional con consumo de energía “0”

Arquitecno, 2017
En la actualidad son visibles las consecuencias derivadas del cambio climático dentro de lo que podemos citar, disminución o pérdida de glaciares, aumento paulatino de la temperatura promedio a nivel regional y mundial, transformaciones en los regímenes ...
Alberto Maidana, Griselda Armelini
doaj   +1 more source

Potential of organogel‐based colloidal hydrogels for new cosmetic formulations

International Journal of Cosmetic Science, EarlyView.
Colloidal hydrogels are formed by combining anionic, cationic, or nonionic surfactants with two oils of cosmetic interest: sweet almond oil and phytosqualane. These systems are obtained through hot emulsification followed by cooling, which leads to the aggregation of gel‐like particles.
Andrea Gregorio Gomes, Lea Broche, Bruno Payre, Emile Perez, Celine Picard, Sophie Franceschi   +5 more
wiley   +1 more source

Comportamento bioclimático de frangos de corte caipira em piquetes enriquecidos Bioclimatic behavior of free-range rustic broilers in enriched paddocks

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
Conduziu-se esta pesquisa com o objetivo de avaliar o efeito do enriquecimento ambiental em sistema de produção para frangos de corte caipira, determinando a influência dos elementos meteorológicos e seu reflexo nos aspectos comportamentais das aves.
Marcos J. B. dos Santos, Héliton Pandorfi, Gledson L. P. Almeida, Waldirene B. Morril, Elvira M. R. Pedrosa, Cristiane Guiselini   +5 more
doaj   +1 more source

Miners' Reward Elasticity and Stability of Competing Proof‐of‐Work Cryptocurrencies

International Economic Review, EarlyView.
ABSTRACT Proof‐of‐Work cryptocurrencies employ miners to sustain the system through algorithmic reward adjustments. We develop a stochastic model of the multicurrency mining and identify conditions for stable transaction speeds. Bitcoin's algorithm requires hash supply elasticity <$<$1 for stability, while ASERT remains stable for any elasticity and ...
Kohei Kawaguchi, Junpei Komiyama, Shunya Noda   +2 more
wiley   +1 more source

Aparato educacional para estudo da queda livre com análise do movimento

Caderno Brasileiro de Ensino de Física, 2016
Este artigo apresenta um projeto experimental para a medição eletrônica da queda de objetos em queda livre para fins educacionais. O aparelho é constituído por um tubo de PVC, dentro das quais os objetos são abandonados.
Denicezar Ângelo Baldo, José Luiz Antunes de Almeida, José Martins de Oliveira Jr., Norberto Aranha, Waldemar Bonventi Jr.   +4 more
doaj   +1 more source

Moving Sum Procedure for Multiple Change Point Detection in Large Factor Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper proposes a moving sum methodology for detecting multiple change points in high‐dimensional time series under a factor model, where changes are attributed to those in loadings as well as emergence or disappearance of factors. We establish the asymptotic null distribution of the proposed test for family‐wise error control and show the
Matteo Barigozzi, Haeran Cho, Lorenzo Trapani   +2 more
wiley   +1 more source

Aggregation and the Structure of Value

Noûs, EarlyView.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

Efeito da umidade inicial e do tempo de cura nas propriedades mecânicas de misturas solo-cimento

Transportes, 2017
Misturas de solo-cimento são muitas vezes empregadas como material de base ou sub-base para pavimentação em locais com pouca disponibilidade de agregados.
Kendi Sanbonsuge, Kamilla Vasconcelos, Liedi Bernucci, Edson de Moura   +3 more
doaj   +3 more sources

Desempeño térmico de prototipo de techo verde bajo condiciones de calor extremo

Entreciencias: Diálogos en la Sociedad del Conocimiento
Propósito: evaluar el desempeño térmico de un techo verde en un prototipo a escala en condiciones de calor extremo en clima cálido seco. Diseño metodológico: el estudio es de carácter experimental y se desarrolló en cinco fases: revisión del estado ...
Génesis Anahí Cuevas Acuña, Juan Pedro Ayala Moreno, Javier Esquer Peralta, Nora Elba Munguia Vega, Juana Alvarado Ibarra   +4 more
doaj   +1 more source

Rational points on even‐dimensional Fermat cubics

Transactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract We show that even‐dimensional Fermat cubic hypersurfaces are rational over any field of characteristic not equal to three, by constructing explicit rational parameterizations with polynomials of low degree. As a byproduct of our rationality constructions, we obtain estimates for the number of their rational points over a number field and ...
Alex Massarenti
wiley   +1 more source