Universitat de Girona
Now showing items 185-204 of 1627
Boar semen is not collected under sterile conditions,so boar ejaculates are commonly contaminated with a broad range of microorganisms, which may affect sperm quality and lead to a low reproductive performance and severe ...
The Spanish Tourism Office pointed out in 2012 that between 40,000 and 50,000 South Koreans had traveled to Spain. This figure, validated by the National Institute of Statistics (INE) reflects that in nine years the ...
Procesos hidrodinámicos determinan, en un alto grado la calidad del agua en embalse, sin embargo dichos procesos han sido tradicionalmente olvidados en la gestión de embalse. En esta tesis se presentan evidencias de los ...
En aquesta tesi he estudiat l'efecte de l'error de superposició de base (BSSE) en la planaritat d'algunes molècules. He observat que l'ús d'alguns mètodes de càlcul amb determinades funcions de base descriuen mínims d'energia ...
La importància que els acolliments en família extensa han assolit en la darrera dècada dins dels sistemes de protecció infantil en la major part dels països occidentals, contrasta tant amb l'escassa i recent investigació ...
The loss of a loved one is a universal experience to which the majority of people adjust adequately. A substantial minority do not allow the natural process and, despite the passing of time, they continue to live with great ...
Trust modeling is widely recognized as an aspect of essential importance in the construction of agents and multi agent systems (MAS). As a consequence, several trust formalisms have been proposed over the last years. All ...
This doctoral thesis aims to explore different aspects of the subjective well-being of children living in conditions of social vulnerability and participating in after-school programs in Chile. To this end, an investigation ...
The main objective of this research is to explore the relationship between the subjective well-being and a set of school factors that characterize both the functioning of the classroom and the school, and the academic ...
The present investigation is made up of two studies. Study 1 has as general objectives (1) to know the prevalence of the risk of psychopathology in adolescents, (2) to analyze the levels of subjective well-being and risk ...
In 2015 the average concentration of CO2 in the atmosphere exceeded 400 ppm. Some technologies, including CO2 capture and storage, are palliative. However, the development of alternatives to burning of fossil fuels focuses ...
Aquest és el primer informe que demostra que l'autofàgia està mecànicament vinculat al manteniment de les cèl•lules tumorals que expressen alts nivells de CD44 i baixos nivells de CD24, que són típics de les cèl•lules mare ...
Currently, global change is promoting the spatiotemporal occurrence of temporary streams, altering fluvial ecosystem function and structure, and the ecosystem services they provide. To effectively protect fluvial ecosystems, ...
The main goal of this thesis is to investigate the effects of consequences of global change on fluvial biofilms. To achieve this objective a multi-marker approach has been used at different experimental scales. Our results ...
The oxidation of hydrocarbons is one of the most important processes in the chemical industry, and it is often related to highly toxic reagents that generate a big amount of undesired residues. In sharp contrast, oxygenase ...
La gran eficiència, selectivitat i les condicions suaus exhibides per les reaccions que tenen lloc al centre actiu de les metal·looxigenases són la font d'inspiració per la present dissertació. Amb l'objectiu de dissenyar ...
The oxidation of hydrocarbons under soft and selective conditions is a reaction almost exclusively produced under these conditions by enzymes. A lot of these enzymes, posses iron in their metal center, responsible for the ...
Nowadays, one of the main goals in organic chemistry and fine industry is the development of new synthetic methodologies for the preparation of life-relevant products in a sustainable manner. The use of first-row ...
Selective oxidation of C-H bonds is an important reaction, as it can disclose novel synthetic strategies to get functionalized products through efficient paths. Nonetheless, due to the inert character of C-H bonds, the use ...
The functionalization of hydrocarbons in a sustainable manner is one of the main challenges for chemists. Their abundance in nature as natural gas or crude oil makes them the most convenient chemical feedstock. The oxidation ...
