Mostrando ítems 1817-1836 de 5566
Bahamon Rivera, Nixon (Fecha de defensa: 2002-05-24)
The response of phytoplankton to various ecological forcings was examined in the upper waters of the NW Mediterranean (MED) and the subtropical North Atlantic (NA) from field observations, analysis of historical data sets ...
Gieseler, Jan (Fecha de defensa: 2014-02-03)
Nanotechnology was named one of the key enabling technologies by the European Commission and its tremendous impact was envisioned early by 20th century physicist R.Feynman in his now oft-quoted talk "Plenty of Room at the ...
Guenther, Nils Eric (Fecha de defensa: 2021-09-08)
At sufficiently low temperatures, fluids of bosonic particles may undergo a phase transition, below which a Bose-Einstein condensate (BEC) forms. The BEC is one of the most fundamental concepts in many-body quantum physics ...
Ebling, Ulrich (Fecha de defensa: 2014-11-03)
Ultracold atomic gases have established themselves as quantum systems, which are clean and offer a high degree of control over crucial parameters. They are well isolated from their environment and thus offer the possibility ...
Carnerero Quintero, Cristina (Fecha de defensa: 2021-09-30)
Atmospheric aerosol particles, particularly ultrafine particles (UFPs; particles with less than 100 nm in diameter), and tropospheric ozone (O3) are atmospheric pollutants highly influenced by photochemical reactions, i.e., ...
Fischer e Silva, Renan (Fecha de defensa: 2018-05-03)
Energy efficiency and performance improvements have been two of the major concerns of current Data Centers. With the advent of Big Data, more information is generated year after year, and even the most aggressive predictions ...
Pablos Hernández, Miriam (Fecha de defensa: 2016-10-03)
The first three of a series of new generation satellites operating at L-band microwave frequencies have been launch in the last decade. L-band is particularly sensitive to the presence of water content in the scene under ...
Botton, J. M. de (Jocelyne Mireille) (Fecha de defensa: 2012-07-12)
Pursuing the sustainable urban project means to understand the reasons of crisis of the twentieth century city and interpret them under new approaches. This is the purpose of the thesis, to assume the critical states of ...
Lacruz Cruz, Amado (Fecha de defensa: 2022-07-18)
Fluorinated chemicals, commonly known as per- and polyfluoroalkyt substances (PFASs), are widely used to obtain water-, oil- and stain-repellent texUles. The constant development and optimization of fluorochemicals for ...
Wang, Yongjie (Fecha de defensa: 2023-02-23)
(English) Climate change and global energy demand urge the development of renewable energy sources for worldwide power supply. Photovoltaic devices that convert solar energy directly into electricity are the most promising, ...
Albo-Puigserver, Marta (Fecha de defensa: 2019-10-18)
Mediterranean marine ecosystems are fundamentally driven by their pelagic communities and small and medium-size pelagic fishes (SMPF) play crucial ecological roles. Although fluctuations of the populations of these organisms ...
Grinyó Andreu, Jordi (Fecha de defensa: 2016-10-17)
Technological development and increased availability of remotely operated vehicles and manned submersibles have significantly increased accessibility to deep environments revealing the presence of rich and diverse macrobenthic ...
Zamora Terol, Sara (Fecha de defensa: 2013-09-29)
Copepods have a crucial role in the pelagic marine ecosystem, for their participation in the nutrient cycling and carbon export in biogeochemical cycles, and their role as link organisms between primary producers and higher ...
Pérez Álvarez, Nuria (Fecha de defensa: 2014-07-23)
Currently, resources that may be spent in health care are limited so it is necessary to rationalize their consumption and prioritise their allocation to the options with higher health outcome and economic sustainability. ...
León Gutiérrez, Xavier (Fecha de defensa: 2013-07-05)
Large scale computing infrastructures need scalable and effi cient resource allocation mechanisms to ful l the requirements of its participants and applications while the whole system is regulated to work e ciently. ...
Saura Agel, Ma. José (Fecha de defensa: 2016-12-15)
In this dissertation, I propose a theoretical model to rate enterprises in the context of social, solidarity or popular economics . The model defines a model of three dimensions to classify these organizations, going from ...
Corrales Ribas, Xavier (Fecha de defensa: 2019-03-21)
Firstly, I reviewed modelling approaches that were used to assess the impact of invasive alien species (IAS) in aquatic ecosystems. According to the review, multispecies/ecosystem mechanistic models dominated the applications, ...
Bori Dols, Jaume (Fecha de defensa: 2016-06-29)
Environmental impacts associated to the unstoppable growth of human population are threatening ecosystems worldwide. Among them, soil ecosystems are becoming increasingly degraded due to their unsustainable use and management, ...
Kuzmanović, Maja (Fecha de defensa: 2017-06-23)
More than one-third of Earths available freshwater is used for anthropogenic purposes, which has led to its contamination by numerous chemical compounds. Their presence in the environment might have negative consequences ...
Jiménez Jiménez, Ma. José (María José) (Fecha de defensa: 2016-02-04)
It is well known the important role that difference equations play in several problems of the engineering or of the science. However, whereas the expression of the solutions when the coefficients of the equations are ...