Results 51 to 60 of about 601,268 (237)

Effect of cortisol on bovine oocytes maturation and further embryonic development after in vitro fertilization [PDF]

open access: yes, 2018
Dissertação de Mestrado, Engenharia Zootécnica, 07 de dezembro de 2018, Universidade dos Açores.A maturação meiótica dos ovócitos e o posterior desenvolvimento embrionário após a fertilização são importantes requisitos fisiológicos para a sobrevivência ...
Mahdy, Aya Khaled Hassan
core  

Automação industrial. Uma perspetiva de terreno! [PDF]

open access: yes, 2013
De que é que falamos quando nos referimos a AUTOMAÇÃO? - Estamos no âmbito da engenharia eletrotécnica, da mecânica, da eletrónica, da programação, das comunicações, da instrumentação, da pneumática, ….?
Tavares, Jorge Manuel Teixeira
core   +2 more sources

Poly(Ionic) Liquid‐Enhanced Ion Dynamics in Cellulose‐Derived Gel Polymer Electrolytes

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Advancing Energy Storage: Gel Polymer Electrolytes with Promising Potential Gel polymer electrolytes (GPEs) incorporating methyl cellulose and a range of ionic/polymeric achieved Li+ transference numbers comparable to traditional liquid electrolytes.
Tiago G. Paiva   +7 more
wiley   +1 more source

Carbonylative Suzuki–Miyaura Coupling of 1‐Iodoglycals Mediated by the N‐Heterocyclic Carbene Catalyst PEPPSI: Preparation of C‐Acyl Glycosides

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A multicomponent carbonylative Suzuki–Miyaura reaction was developed for the synthesis of C‐acyl glycosides. Using Pyridine‐Enhanced Precatalyst Preparation, Stabilization, and Initiation (PEPPSI‐IPr) catalysis and Mo(CO)6 as a solid CO source, the reaction enables selective carbonylation of three components in synthetically useful yields, providing a ...
Eurípedes de Aguiar   +5 more
wiley   +1 more source

Otimização da altura de uma barragem de terra homogênea.

open access: yesRevista Tecnologia, 2009
Atualmente, o dimensionamento de uma barragem parte da determinação da capacidade mínima que o reservatório tem que possuir, necessária para regularizar uma quantidade que é estipulada com base na demanda necessária para região, fixando, posteriormente,
José Carlos de Araújo   +2 more
doaj  

Editorial

open access: yesE&S Engineering and Science, 2021
E & S - Engineering and Science é uma Revista Eletrônica Internacional que possui corpo editorial e revisores de diversas áreas de especializações, para atender as necessidades correlatas a Ciência e a Tecnologia.
Margarida Marchetto
doaj   +1 more source

SEISMO-ELECTROMAGNETIC PHENOMENA IN TECTONICALLY ACTIVE REGIONS [PDF]

open access: yes, 2010
This work presents a research plan that aims to monitor seismo-electromagnetic signals in seismic active regions. Two effects will be considered: electromagnetic field emissions and radio broadcastings.
Bezzeghoud, M.   +9 more
core  

Radial basis functions-finite differences collocation and a Unified Formulation for bending, vibration and buckling analysis of laminated plates, according to Murakami's zig-zag theory [PDF]

open access: yes, 2011
In this paper, we propose to use the Murakami's zig-zag theory for the static and vibration analysis of laminated plates, by local collocation with radial basis functions in a finite differences framework.
A.J.M. Ferreira   +45 more
core   +1 more source

A Deep Learning Framework for Forecasting Medium‐Term Covariance in Multiasset Portfolios

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT Forecasting the covariance matrix of asset returns is central to portfolio construction, risk management, and asset pricing. However, most existing models struggle at medium‐term horizons, several weeks to months, where shifting market regimes and slower dynamics prevail.
Pedro Reis, Ana Paula Serra, João Gama
wiley   +1 more source

COMPILATION OF ACTIVE FAULT DATA IN PORTUGAL FOR USE IN SEISMIC HAZARD ANALYSIS [PDF]

open access: yes, 2010
To estimate where future earthquakes are likely to occur, it is essential to combine information about past earthquakes with knowledge about the location and seismogenic properties of active faults.
Besana-Ostman, G.M.   +17 more
core  

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