Search results for "ELF"
showing 10 items of 5893 documents
Ultrathin films of layered coordination polymers: charge transport and spin crossover at the nanoscale
2019
La present tesi doctoral ha estat realitzada com a compendi de publicacions i porta per títol "Pel·lícules ultrafines de polímers de coordinació en capes: transport de càrrega i transició d'espín en la nanoescala" (Ultrathin films of layered coordination polymers: charge transport and spin-crossover at the nanoscale). Aquesta es divideix en quatre capítols a més d'un capítol final de conclusions i resums en castellà i valencià. El primer capítol consisteix d'una introducció general enfocada cap a donar una visió general del transport de càrrega en xarxes metall-orgàniques (de l'anglès metal-organic frameworks, MOFs) i polímers de coordinació (de l'anglès coordination polymers, CPs), així co…
Extra-virgin olive oils storage: Effect on constituents of biological significance
2021
Abstract The high oxidative stability of virgin olive oil with respect to other vegetable oils is mainly due to its fatty acid composition, in particular, to the high monounsaturated-to-polyunsaturated ratio, and to the presence of minor compounds that play a major role in preventing oxidation. In spite of its high stability, virgin olive oil is susceptible to oxidative processes, such as enzymatic oxidation, photooxidation, and autoxidation, which mainly occur during processing and storage. Generally, extra-virgin olive oil has a relatively long shelf life of 16–18 months of storage at room temperature. The study of shelf life is generally based on determining of quality parameters (acidit…
Darba nosaukums- 3-5 gadus vecu bērnu pašapkalpošanās prasmju pilnveide lomu rotaļās
2020
Kvalifikācijas darba temats: 3-5 gadus vecu bērnu pašapkalpošanās prasmju pilnveide lomu rotaļās. Darba autors: Madara Umbraško Kvalifikācijas darba mērķis: analizēt autoru atziņas par pašapkalpošanās prasmēm un pētīt to pilnveides iespējas 3 – 5 gadus veciem bērniem lomu rotaļās. Lai īstenotu mērķi un uzdevumus teorētiskajā daļā tika pētīta un analizēta psiholoģiskā un pedagoģiskā literatūra par pašapkalpošanās prasmēm un to nozīmi attīstībā, 3 – 5 gadus vecu bērnu attīstības raksturojums un lomu rotaļu nozīme pašapkalpošanās prasmju apguves veicināšanā. Empīriskajā daļā tika pētīta lomu rotaļu ietekme uz pašapkalpošanās prasmju apguvi. Veikta novērošana “X” izglītības iestādes jaukta vecu…
Stabilization of unilamellar catanionic vesicles induced by β-cyclodextrins: A strategy for a tunable drug delivery depot.
2018
The limited stability of catanionic vesicles has discouraged their wide use for encapsulation and controlled release of active substances. Their structure can easily break down to form lamellar phases, micelles or rearrange into multilamellar vesicles, as a consequence of small changes in their composition. However, despite the limited stability, catanionic vesicles possess an attractive architecture, which is able to efficiently encapsulate both hydrophobic and hydrophilic molecules. Therefore, improving the stability of the vesicles, as well as the control on unilamellar structures, are prerequisites for their wider application range. This study focuses on the impact of β-cyclodextrins fo…
Executive functions in kindergarten children at risk for developmental coordination disorder
2018
Executive functioning (EF) is a key cognitive process for development. Little is known about EF in Kindergarten children at risk for developmental coordination disorder (DCD), despite this age being one of the most critical and intensive period of motor and cognitive development. In our investigation we compared EF in kindergarten children at risk for DCD with Typically Developing (TD) children. Participants were 36 Italian children, 18 at risk for DCD (9 boys and 9 girls) who had a mean age of 4.6 years and 18 TD (9 boys and 9 girls) who had a mean age of 4.6. Executive functions were measured by tasks targeting cold executive functioning (working memory, fluency, inhibitory control) and t…
El uso de GPS para el análisis del comportamiento espacio-temporal de los turistas. Pre-test en el Valle de Boí
2015
Este artículo es un análisis exploratorio sobre el uso de los GPS para estudiar el comportamiento de los visitantes en un espacio abierto. El Valle de Boí es un escenario turístico que ofrece diversos recursos de primer orden, por lo que el estudio de los recorridos de los visitantes permite analizar la respuesta a estímulos muy diferentes. Los resultados demuestran que el recurso del GPS en espacios abiertos permite ampliar la información sobre el uso social del espacio turístico y abre las puertas a nuevas formas de análisis. This article is an exploratory analysis of the use of GPS for the study of visitors’ behaviour in an open space. The Boi Valley is an open space that offers importan…
The development of achievement strategies and academic skills during the first year of primary school
2002
Abstract The aim of the study was to investigate whether children's achievement strategies would predict the development of their reading and mathematical skills during the first school year, or whether it is rather these skills that predict the changes in their achievement strategies. One-hundred and five 6- to 7-year-old children were examined three times during their first year of primary school: in each measurement, their self-reported achievement strategies were assessed, and their reading and mathematical skills were rated by their classroom teacher. Their overall cognitive competence was also measured before entry into school. The results showed that the use of maladaptive achievemen…
Configurations of Europe
2006
This book has sought to gender men in Europe by drawing on various sources of information and in relation to key themes and policy arenas. In this final chapter, we consider some broad issues concerning the position and impact of men in the context of changing configurations of Europe, including, but not only, in relation to the EU. There are many ways in which the more explicit gendering of men raises new sets of questions about the EU and the changing definitions of ‘Europe’.
Reversible Hydrogels with Switchable Diffusive Permeability
2021
Hydrogels are polymer networks swollen in water that are characterized by soft mechanics and high permeability. This makes them good candidates for separation and membrane technologies. The diffusion is controlled by the mesh size of the network, and this can be made tunable through the introduction of thermoresponsive polymers. However, this is still a developing field. To contribute to this development, a dual dynamic network is formed composed of four-arm polyethylene glycol precursors in which each arm is functionalized with both a terpyridine moiety capable of forming reversible metal–ligand complexes along with branches of poly(N-isopropylacrylamide) (pNIPAAm), which can be swit…
Acid‐Cleavable Poly(ethylene glycol) Hydrogels Displaying Protein Release at pH 5
2020
Abstract PEG is the gold standard polymer for pharmaceutical applications, however it lacks degradability. Degradation under physiologically relevant pH as present in endolysosomes, cancerous and inflammatory tissues is crucial for many areas. The authors present anionic ring‐opening copolymerization of ethylene oxide with 3,4‐epoxy‐1‐butene (EPB) and subsequent modification to introduce acid‐degradable vinyl ether groups as well as methacrylate (MA) units, enabling radical cross‐linking. Copolymers with different molar ratios of EPB, molecular weights (M n) up to 10 000 g mol−1 and narrow dispersities (Đ<1.05) were prepared. Both the P(EG‐co‐isoEPB)MA copolymer and the hydrogels showed pH‐…