Search results for "version"
showing 10 items of 1591 documents
Avoidance and contextual learning induced by a kairomone, a pheromone and a common odorant in female CD1 mice
2015
Copyright © 2015 Fortes-Marco, Lanuza, Martínez-García and Agustín-Pavón.
El desarrollo como negocio
2002
Sustainable Energy Supply Based on Sunflower Seed Husk for Oil mills
2019
The use of biomass, including sunflower husk, for in-situ energy generation has undergone a development in Ukraine last decades. Within this work, four combined heat and power technologies based on oil utilization, husk combustion, gasification, and methanization have been investigated. Their electricity and heat potential has been determined. Criteria for techno-economical assessment of CHP technologies have been suggested. Husk biogas and gasification technologies are not mature. CHP plants based on husk combustion are competitive. Steam turbine generators with a nominal electric capacity higher 1.5 MW may be profitable too.
A Permanent Magnet Linear Generator for the Enhancement of the Reliability of a Wave Energy Conversion System
2019
In this paper, a linear generator for a highly reliable Wave Energy Conversion system is designed and tested. In order to store energy, the system is able to produce hydrogen The Wave Energy Conversion System consists of an electrical linear generator, a power conversion system and a sea-water electrolyzer. A small scale prototype of the system has been designed and built. The design is oriented to the enhancement of the system robustness and reliability and a Failure Mode and Effects and Criticality Analysis (FMECA) has been used. In order to guarantee an easy extension of the power capability of the marine plant, a modular architecture of the system has been adopted. The design strategy i…
Universal charts for optical difference frequency generation in the terahertz domain
2010
We present a universal and rigorous approach to study difference frequency generation in the terahertz domain, keeping the number of degrees of freedom to a minimum, through the definition of a suitable figure of merit. The proposed method relies on suitably normalized charts, that enable to predict the optical-to-terahertz conversion efficiency of any system based on wave propagation in quadratic nonlinear materials. The predictions of our approach are found to be in good agreement with the best experimental results reported to date, enabling also to estimate the d22 nonlinear coefficient of high quality GaSe.
“What you do to Children Matters”: Motherhood in Toni Morrison's God Help the Child
2015
Toni Morrison’s latest novel, God Help the Child, explores the damaging effects of racism on motherhood and the dramatic impact of toxic mothering upon children. The institution of patriarchal motherhood fails to enact the critical tasks of motherwork —preservation, nurturance and cultural bearing, while mothering is a potential site of empowerment of black children and African American culture. African American authoritarian parenting style, associated with patriarchal motherhood, has a correlation with diverse factors, such as the legacy of slavery and its survival strategies, low-income and/or single-parent households and the disruption of the motherline. Motherhood distorted by racism c…
White LED light obtained by frequency down-conversion of perylene-based dyes
2012
The potential of positively-charged cellulose sponge for malolactic fermentation of wine, using Oenococcus oeni
2001
Malolactic fermentation (MLF) is a secondary bioconversion developed in some wines involving malic acid decarboxylation. The induction of MLF in wine by cultures of free and immobilized Oenococcus oeni cells was investigated. This work reports on the effect of surface charges in the immobilization material, a recently described fibrous sponge, as well as the pH and the composition of the media where cells are suspended. A chemical treatment provided positive charge to the sponges (DE or DEAE) and gave the highest cell loadings and subsequent resistance to removal. Preculture media to grow the malolactic bacteria before the immobilization procedure were also evaluated. We have established fa…
Novel synthesis of up-conversion phosphor based on rare-earth doped NaLaF4
2011
In this work Er3+ doped NaLaF4 material has been synthesized Along with the description of the synthesis route, luminescence spectra and decay kinetics of both traditional and up-conversion luminescence of Er3+ will be presented for different Er3+ doping levels. It will be shown that the main mechanisms involved in the creation of the up-conversion luminescence in NaLaF4:Er3+ under excitation at about 975 nm are excited state absorption and energy transfer. Relative impact of either of the mechanisms in NaLaF4:Er3+ depends on both the concentration of Er3+ and on the excitation wavelength: the increase of either the concentration or the excitation wavelength leads to the prevalence of energ…
Theoretical efficiency limits for thermoradiative energy conversion
2015
Published version of an article in the journal: Journal of Applied Physics. Also available from the publisher at: http://dx.doi.org/10.1063/1.4907392 A new method to produce electricity from heat called thermoradiative energy conversion is analyzed. The method is based on sustaining a difference in the chemical potential for electron populations above and below an energy gap and let this difference drive a current through an electric circuit. The difference in chemical potential originates from an imbalance in the excitation and de-excitation of electrons across the energy gap. The method has similarities to thermophotovoltaics and conventional photovoltaics. While photovoltaic cells absorb…