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Now showing items 2421-2430 of 4105
Photovoltaic Energy Harvesting System Adapted for Different Environmental Operation Conditions: Analysis, Modeling, Simulation and Selection of Devices
(MDPI, 2019-04-01)
The present research work proposes a photovoltaic energy harvester and an appropriate direct current (DC)/DC converter for a harvesting system after the study of the devices and taking the operation conditions. Parameters ...
Novel Loci for Childhood Body Mass Index and Shared Heritability with Adult Cardiometabolic Traits
(Public Library Science, 2020-10-12)
The genetic background of childhood body mass index (BMI), and the extent to which the well-known associations of childhood BMI with adult diseases are explained by shared genetic factors, are largely unknown. We performed ...
Prenatal and postnatal exposure to air pollution and emotional and aggressive symptoms in children from 8 European birth cohorts
(Elsevier, 2019-07-18)
Background: The association between air pollution exposure and emotional and behavioural problems in children is unclear. We aimed to assess prenatal and postnatal exposure to several air pollutants and child's depressive ...
The Social Efficiency for Sustainability: European Cooperative Banking Analysis
(MDPI, 2018-09)
This paper seeks to establish the relationship between economic efficiency and social efficiency to analyze the sustainability of banking in Europe. The type-effect has been analyzed, as stakeholder value bankscooperatives ...
Understanding Cash Sharing: A Sustainability Model
(MDPI, 2019-03-20)
Traditionally, corporate treasury management has been strategically based on the idea of advancing collections and delaying payments, which has been regulated through the intermediation of financial entities using, for ...
Improvement Actions for a More Social and Sustainable Public Procurement: A Delphi Analysis
(MDPI, 2019-08)
Public procurement accounts for almost 20% of Spain's gross domestic product (GDP). The current legislation allows for the inclusion of social considerations in contracting processes, hence the interest of this study, which ...
Influence of Chemical Structures on Isodimorphic Behavior of Three Different Copolycarbonate Random Copolymer Series
(American Chemical Society, 2020-01-10)
Three series of aliphatic random copolycarbonates, poly(heptane-co-dodecane carbonate) P7C-P12C, poly(butane-co-dodecane carbonate) P4C-P12C and poly(butane-co-heptane carbonate) P4C-P7C, were synthesized by two-step ...
Effect of Chemical Structure and Salt Concentration on the Crystallization and Ionic Conductivity of Aliphatic Polyethers
(MDPI, 2019-03-09)
Poly(ethylene oxide) (PEO) is the most widely used polymer in the field of solid polymer electrolytes for batteries. It is well known that the crystallinity of polymer electrolytes strongly affects the ionic conductivity ...
CO2-sourced polycarbonates as solid electrolytes for room temperature operating lithium batteries
(Royal Society of Chemistry, 2019-03-19)
In the last few years, polycarbonates have been identified as alternatives to poly(ethylene oxide) as polymer electrolytes for lithium battery applications. In this work, we show the design of CO2-sourced
polycarbonates ...
Opportunities for organocatalysis in polymer synthesis via step-growth methods
(Elservier, 2019-03-14)
Organocatalysis has emerged as an invaluable tool for polymer synthesis and has already demonstrated versatility for replacing organometallic catalysts in many polymerization reactions. The overall ease of removal and lower ...