Now showing items 212-230 of 230
Xing, Congcong (Date of defense: 2021-07-30)
The photocatalytic production of hydrogen from water and biomass derivatives such as ethanol, glycerol and sugars is a highly attractive strategy to generate environmentally benign hydrogen. Ethanol is more easily oxidized ...
Serafin, Jaroslaw (Date of defense: 2022-04-21)
This work facuses on the study of these processes on Ti02 and Ce02, respectively. Although the development of photocatalytic research with the use of semiconductor photocatalysts does not last longer than about 40 years, ...
Laínez Aguirre, José Miguel (Date of defense: 2010-01-15)
Las tendencias del mercado han hecho que las empresas cambien su forma de hacer negocios. La Globalización ha permitido a las empresas tener la posibilidad de acceder a distintos proveedores y mercados globalmente dispersos. ...
Hjaila, Kefah (Date of defense: 2016-09-06)
Current Supply chain (Se) decision support tools are devoted to the optimization of one objective function from a bias centralized perspective, without considering the coexistence with other participants and their uncertain ...
Obón Estrada, Eleonora (Date of defense: 2019-11-27)
The rare earth elements (REEs) are essential ingredients for the development of modern industry and the transition to a more sustainable economy model. The unique physicochemical features of these elements, such as their ...
Sancho Lacalle, Irene (Date of defense: 2018-12-12)
Most of the urban wastewater treatment plants (WWTP), based on conventional activated sludge (CAS) systems, cannot be considered sustainable since the concept of resources (energy and nutrients) recovery is not taken into ...
Bautista Pérez, Lorenzo (Date of defense: 2013-04-09)
Los tejidos de algodón se someten a procesos de preparación (desencolado, descrudado y blanqueo) basados en la eliminación de impurezas presentes en la superficie de la fibra. Actualmente se blanquean con peróxido de ...
Olmo Osuna, Cristian (Date of defense: 2021-07-16)
Current market trend is moving to miniaturized specimens, especially in the biomedical field seeking high effective and less invasive treatrnent. Ultrasound (US) micromolding is a new technique developed to the aim of ...
Darbra i Roman, Rosa Mari (Date of defense: 2005-02-05)
Els ports de mar constitueixen una infraestructura molt important en els països costaners, tant des del punt de vista econòmic com social. Però a la vegada són sistemes molt complexes des del punt de vista ambiental, ja ...
Carol Llopart, Sergio (Date of defense: 2001-10-03)
La presente tesis va encaminada al estudio de la gravedad de los accidentes industriales con sustancias peligrosas mediante la utilización del análisis histórico de accidentes. Su objetivo final es utilizar el tratamiento ...
Gómez Díaz, Claudia Juliana (Date of defense: 2007-01-18)
En el campo de la cinética de la pirólisis de biomasa se han desarrollado numerosos trabajos de investigación que no acaban de resolver aspectos básicos del proceso. El análisis de resultados termogravimétricos aún requiere ...
Borkel, Christoph (Date of defense: 2016-01-21)
Cementitious materials are used to condition or stabilise waste and to build infrastructure in disposal sites. Moreover, they are envisaged to form part of engineered barrier systems as container, backfill or liner materials ...
Valverde Salamanca, Abel (Date of defense: 2020-07-27)
This thesis consists of a compendium of five works that illustrate the utilization of selected mathematical methods to solve specific chemical engineering problems. Hence, the thesis is intended to cover both, a review of ...
García González, Carlos A. (Date of defense: 2009-12-11)
Los materiales compuestos nanoestructurados son considerados una opción prometedora para la concepción de materiales multifuncionales. Sin embargo, la falta habitual de interacción entre los componentes orgánicos e ...
Rengel Darnaculleta, Borja (Date of defense: 2019-12-13)
Accidental releases of flammable hydrocarbons in chemical process industries can trigger severe hazards: explosions, fires, and dispersion of toxic vapour clouds. Explosions and toxic releases may injure people within large ...
Rahhali, Ahmed (Date of defense: 2015-07-17)
Materials derired from chicken feathers could be used advantageously in composite building material apptications. Such applications could potentially consume the five billion pounds of feathers produced annually as a ...
Harmassi, Mehrez (Date of defense: 2016-02-27)
Phosphorus in wastewater is mainly present as inorganic phosphate forms and is commonly removed through chemical co-precipitation using Al(III) and Fe(III) salts. However, precipitation is expensive and generates a waste ...
Beltran Sanchidrian, Victòria (Date of defense: 2016-11-21)
Many historical objects have coatings or varnish layers on the surface. In order to determine their conservation and historical contextualization is necessary to know its origin, why they were applied, the application ...
Bonamigo Moreira, Vitor (Date of defense: 2022-01-13)
(English) During the past century the way humans relate to the environment has undergone important changes, and currently it is a global consensus that our well-being should not be achieved at the expense of enlarging our ...