Enviaments recents

Evaluating the impact of corporate social responsibility on financial performance, productivity, and critical success factors in the European mining industry 

Yousefian, Mohammad (Data de defensa: 2025-10-21)

(English) Responsible and ethical business practices have gained prominence, particularly through Corporate Social Responsibility (CSR). Over four decades, CSR disclosure evolved significantly, increasingly appearing in ...

Evaluating harmonized equivalent black carbon mass concentration and source apportionment for air quality assessment 

Savadkoohi, Marjan (Data de defensa: 2025-10-06)

(English) Black carbon (BC), derived from optical absorption measurements, has become an emerging air quality (AQ) metric due to its significant impact on air quality, climate, and public health. However, BC itself cannot ...

Estrategias para una extracción sostenible en minería de superficie 

Vera Burau, María Alejandra (Data de defensa: 2025-09-10)

(English) Mining is a fundamental sector for global economic development; however, it faces significant challenges related to the environmental impacts of its operations and the growing demand from stakeholders for sustainable ...

Ultrafine particles characterization from different transport sources 

Ridolfo, Sharon (Data de defensa: 2025-07-09)

(English) Ultrafine particles (UFP), defined as airborne particulates with an aerodynamic diameter smaller than 100 nm, are of particular concern due to their ability to penetrate deep into the respiratory system and even ...

A proposal for a new method to assess road traffic noise in the United Kingdom 

Simona Pujadó, Josep (Data de defensa: 2024-11-21)

(English) This thesis proposes a novel approach for assessing road traffic noise in the United Kingdom, aiming to partially revise the existing methodology outlined in the Design Manual for Roads and Bridges (DMRB). This ...

Processing and characterization of metallic glasses prepared by centrifugal atomization 

Cegarra Salges, Sasha Alejandra (Data de defensa: 2024-06-20)

(English) The production of metallic glasses presents an opportunity for advancing materials science and engineering applications, offering a unique combination of mechanical characteristics that traditional materials ...

Tendencias y dinámica de los episodios de contaminación por ozono troposférico en España 

Massagué Obradors, Jordi (Data de defensa: 2024-10-29)

(English) Tropospheric ozone (O3) is a secondary gaseous photochemical pollutant with adverse effects on health, ecosystems, and materials, and it contributes to the greenhouse effect. 94% of the urban population in Europe ...

Desarrollo de una metodología para el diseño de una ruta de turismo sostenible, “La Ruta del Oro”, con base en la valoración de sus patrimonios: geológico, minero, biodiverso, histórico y cultural, primera fase: municipio de El Tambo-Nariño, Colombia 

Delgado Martínez, Aida Mercedes (Data de defensa: 2024-02-09)

(English) The municipality of El Tambo is in the department of Nariño, Colombia, it is an integral part of the Andes Mountain Range, it belongs to the two most important geographical features of this in Colombia, “El Nudo ...

Assessment and characterization of subsidence in the Catalan potash basin 

Sidki Rius, Nor (Data de defensa: 2023-12-13)

(English) The importance of potash is inevitable to life on the planet earth as it is required by living mechanisms including plants, animals and human beings. In Europe, this vital ore is produced mainly by Germany and ...

Air quality inside city public commuting buses: physico-chemical and biological characterisation 

Fernández Iriarte, Amaia (Data de defensa: 2023-07-06)

(English) This PhD thesis focuses on identifying the factors that control the concentrations of inhalable particles, pollutant gases, and bioaerosols inside public buses in Barcelona. The study was conducted in the ...

Contribution to the hydrogeological knowledge of the high mountain karst aquifer of the Port del Comte (SE, Pyrenees) 

Herms Canellas, Joan Ignasi (Data de defensa: 2022-06-02)

This thesis has aimed to improve the hydrogeological knowledge of the Port del Comte Massif (PCM), a karstic aquifer system located in the south-eastern sector of the Pyrenees that plays a strategic role in the provision ...

Environmental and occupational characterisation of coals and dust from coal mining 

Trechera Ruiz, Pedro (Data de defensa: 2022-01-13)

The main objective of this PhD thesis is the study of coal mine dust patterns produced by different types of mining operations and different types of coal. In addition, the potential links between oxidative potential (OP) ...

Albitization of the granitic basement of the Guilleries and Roc de Frausa Massifs (NE Spain) in relationship to the Permian - Triassic palaeosurface 

Fàbrega Alsina, Carles (Data de defensa: 2020-12-17)

The granitic basement below the Triassic unconformity in the Guilleries and Roc de Frausa massifs (NE Iberia), presents widespread red stained facies characterized by plagioclase albitization, biotite chlhoritization, ...

Tractament d'emissions gasoses amb altes càrregues d'amoníac mitjançant tecnologies biològiques avançades 

Morral Molto, Eloi (Data de defensa: 2021-12-03)

The growth in world population has led to a significant increase in the generation of wastes (solid, liquid and gaseous). Waste gas is probably the major issue in the case of waste treatment, due to the fact that once the ...

Study and optimisation of copper bioleaching process for electronic waste valorisation 

Benzal Montes, Eva (Data de defensa: 2021-01-28)

In the current economical context, the use of waste material with economic potential should be a priority. In this sense, the increasing production of electrical and electronic equipment waste (WEEE) makes these materials ...

Modelling of liberation in Ta- and W-rich minerals 

Hamid, Sarbast Ahmad (Data de defensa: 2019-12-18)

With the general trend across all commodities towards the treatment of lower grade and medium grade ores, it is becoming increasingly important to develop the proper design for comprehensive mineralogical characterization ...

Strategic minerals milling modelling of high pressure grinding rolls and process parameters dependency 

Anticoi Sudzuki, Hernán (Data de defensa: 2019-12-18)

Comminution is the most energy consuming process in mining industry, where nearly 60 % of the electricity expenditure is due to grinding purposes. In the nature most of the ore minerals are found, finely disseminated and ...

Modelització mitjançant dinàmica de fluids computacional del Mòdul Hidromètric del segle XIX de la Sèquia de Manresa 

Vives i Costa, Jordi (Data de defensa: 2019-07-15)

L’objectiu principal de la present Tesi Doctoral és verificar mitjançant tècniques de la Dinàmica de Fluids Computacional (CFD) la hipòtesi de que el Mòdul Hidromètric (MH) de la Sèquia de Manresa, construït durant el segle ...

Computational fluid dynamics techniques for fixed-bed biofilm systems modeling : numerical simulations and experimental characterization 

Prades Martell, Lledó (Data de defensa: 2018-12-13)

This thesis is focused on the development of one-phase and multiphase models using computational fluid dynamics (CFD) techniques to analyze biosystems behavior at mesoscale. In the first part, the operation of a fixed-bed ...

La contribució de la gestió d'operacions a la sostenibilitat de l'empresa 

Luján Blanco, Itziar (Data de defensa: 2018-02-05)

During the last decades deep changes have taken place in the competitive environment, which have forced companies to focus on strategies that allow them to differentiate themselves from their competitors and gain consumer ...