4,845 results match your criteria: "Universitat Politecnica de Catalunya[Affiliation]"
J Ind Ecol
December 2024
Department of Chemistry and Applied Bioscience, Institute for Chemical and Bioengineering ETH Zurich Zurich Switzerland.
This work presents the PULPO (ython-based ser-defined ifecycle roduct ptimization) framework, developed to efficiently integrate life cycle inventory (LCI) models into life cycle product optimization. Life cycle optimization (LCO), which has found interest in both the process systems engineering and life cycle assessment (LCA) communities, leverages LCA data to go beyond simple assessments of a limited number of alternatives and identify the best possible product systems configuration subject to a manifold of choices, constraints, and objectives. However, typically, aggregated inventories are used to build the optimization problems.
View Article and Find Full Text PDFJ Environ Manage
December 2024
Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 08034, Barcelona, Spain; Flumen Research Institute, Universitat Politècnica de Catalunya (UPC), 08034, Barcelona, Spain.
The design of efficient bacterial inactivation treatment in wastewater is challenging due to its numerous parameters and the complex composition of wastewater. Although solar photochemical processes (PCPs) provide energy-saving benefits, a balance must be maintained between bacterial inactivation efficiency and experimental costs. Predictive decision tools for bacterial inactivation under various conditions would significantly contribute to optimizing PCP design resources.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Group of Characterization of Materials, Departament de Física, Universitat Politècnica de Catalunya, Campus Diagonal-Besòs, Av. Eduard Maristany 10-14, Barcelona 08019, Spain.
Hybrid organic-inorganic perovskites (HOIP) have emerged in recent years as highly promising semiconducting materials for a wide range of optoelectronic and energy applications. Nevertheless, the rotational dynamics of the organic components and many-molecule interdependencies, which may strongly impact the functional properties of HOIP, are not yet fully understood. In this study, we quantitatively analyze the orientational disorder and molecular correlations in archetypal perovskite CHNHPbI (MAPI) by performing comprehensive molecular dynamics simulations and entropy calculations.
View Article and Find Full Text PDFPhys Rev Lett
December 2024
Departament de Física, Campus Nord B4-B5, Universitat Politècnica de Catalunya, E-08034 Barcelona, Spain.
We predict that ultracold bosonic dipolar gases, confined within a multilayer geometry, may undergo self-assembling processes, leading to the formation of chain gases and solids. These dipolar chains, with dipoles aligned across different layers, emerge at low densities and resemble phases observed in liquid crystals, such as nematic and smectic phases. We calculate the phase diagram using quantum Monte Carlo methods, introducing a newly devised trial wave function designed for describing the chain gas, where dipoles from different layers form chains without in-plane long-range order.
View Article and Find Full Text PDFSci Total Environ
December 2024
Department of Public Health Sciences, University of Rochester, School of Medicine and Dentistry, Rochester, NY, USA; Institute for a Sustainable Environment, Clarkson University, Potsdam, NY, USA.
Advanced receptor models can leverage the information derived from optical and chemical variables as input by a variety of instruments at different time resolutions to extract the source specific absorption Ångström exponent (AAE) from aerosol absorption. The multilinear engine (ME-2), a Positive Matrix Factorization (PMF) solver, serves as a proficient tool for performing such analyses, thereby overcoming the constraints imposed by the assumptions in current optical source apportionment methods such as the Aethalometer approach since the use of a-priori AAE values introduces additional uncertainty into the results of optical methods. Comprehensive PM chemical speciation datasets, and aerosol absorption coefficients (b, λ) at seven wavelengths measured by an Aethalometer (AE33), were used in multi-time source apportionment (MT-PMF).
View Article and Find Full Text PDFJ Environ Radioact
December 2024
College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, 610000, China; Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province, Chengdu, 610000, China. Electronic address:
Airborne gamma ray spectrum detection technology is an effective means to measure the concentration and spatial distribution of natural radionuclides in environmental media such as surface rocks and soil during aviation flight. Therefore, it is vital to fully explore the radiation information related to mineralization in airborne gamma spectrometry data and explore the dose distribution law of gamma radiation field of radionuclides in the detection area. This paper is based on the theoretical calculation model of ground-air interface gamma radiation field.
View Article and Find Full Text PDFSci Data
December 2024
Department of Electrical Engineering, Universitat Politècnica de Catalunya, Campus of Terrassa, 08222, Terrassa, Spain.
This paper presents an experimental dataset developed for the detection of parallel arc faults in aircraft electrical systems. This dataset is based on a total of 960 experiments performed in a low-pressure chamber under different conditions using two electrodes placed on the surface of an insulating material. These experiments correspond to 2 insulating materials, 12 electrode distances, and 10 pressure conditions representative of aircraft environments.
View Article and Find Full Text PDFMath Biosci
December 2024
Department of Chemical Engineering, Indian Institute of Technology Bombay (IITB), 400076 Mumbai, India.
Cell migration regulates central life processes including embryonic development, tissue regeneration, and tumor invasion. To establish the direction of migration, cells follow exogenous cues. Durotaxis, the directed cell migration towards elastic stiffness gradients, is the classical example of mechanical taxis.
View Article and Find Full Text PDFTher Adv Med Oncol
December 2024
Medical Oncology Department, Hospital Clinic of Barcelona, Calle Villarroel 170, Barcelona 08036, Spain.
Background: While targeted therapies have transformed the treatment landscape of oncogene-addicted non-small cell lung cancer (NSCLC), the influence of sex on treatment outcomes remains insufficiently understood.
Objectives: This systematic review aimed to investigate the impact of sex on clinical outcomes in patients with NSCLC harboring driver fusions treated with targeted therapies enrolled in clinical trials.
Data Sources And Methods: A comprehensive literature search was conducted using PubMed, Embase, and relevant conference abstracts to identify phase III randomized and early clinical trials that reported sex-specific data, including progression-free survival (PFS), overall survival (OS), overall response rate, and adverse events (AEs), in patients with fusion-positive NSCLC treated with tyrosine kinase inhibitors (TKIs).
Sci Total Environ
December 2024
Dipartimento di Ingegneria, Università degli Studi di Palermo, viale delle Scienze ed. 6, 90128 Palermo, Italy.
Brine mining can represent a valuable non-conventional resource for the extraction of Mg, Li, B, Sr and other Trace Elements (TEs) such as Rb, Cs, whose recoveries require chemical reagents such as alkaline and acidic solutions. In a circular strategy, these required chemicals can be produced in-situ through Electrodialysis with Bipolar Membranes (EDBM). In this work, a laboratory EDBM unit was operated using real brines from Trapani saltworks to investigate, for the first time, the migration of minor and trace ions, as Li, B, Sr, Cs and Rb through ion-exchange membranes (IEMs).
View Article and Find Full Text PDFSensors (Basel)
November 2024
CommSensLab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya (UPC), Campus Nord, Carrer de Jordi Girona, 1-3, 08034 Barcelona, Spain.
This paper presents a new approach to measuring eyelid movement using millimeter wave (mmW) radar technology. A two-step method is proposed, involving the observation of a small resolution cell corresponding to the monitored eye and the evaluation of the phase evolution over the measurement period. Simulations are conducted to support radar system optimization and data interpretation with a focus on detecting eyelid movement patterns and compensating for interference from other parts of the body.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa (INTEXTER), Universitat Politècnica de Catalunya-BarcelonaTECH, 08222 Terrassa, Spain.
Intrinsically colored cotton is crucial for sustainability as it eliminates the need for chemical dyes, reducing water pollution and carbon footprint. It also preserves biodiversity by using fewer pesticides and supports eco-friendly, ethical product creation. This research aims to examine the factors that influence the color change that occurs in naturally colored organic cotton (NaCOC) fabrics when washed under normal household conditions, and it focuses on special detergents designed for people with skin hypersensitivity.
View Article and Find Full Text PDFPolymers (Basel)
November 2024
Department of Chemical Engineering, Universitat Politècnica de Catalunya Barcelona Tech, C/Colom, 1, 08222 Terrassa, Barcelona, Spain.
The large number of tires produced annually demands new recycling methods. A key challenge associated with recycling elastomers is their crosslinking structure that prevents fusion. It is possible to reverse crosslinking through a process called devulcanization.
View Article and Find Full Text PDFAAPS J
December 2024
OnTarget Group, Saint Petersburg, Russian Federation.
Biomed Opt Express
December 2024
Departament d'Òptica i Optometria, Universitat Politècnica de Catalunya - BarcelonaTech, Violinista Vellsolà 37, 08222 Terrassa, Spain.
This study investigates whether a diffractive presbyopia-correcting multifocal intraocular lens disrupts the favorable interaction between chromatic and monochromatic aberrations in the eye. This is analyzed not only for distant objects but also for closer viewing distances, where the lens utilizes different diffraction orders depending on its design. We consider diffractive designs based on the zero-diffraction order for far vision and the first diffraction order for near vision (i.
View Article and Find Full Text PDFInt J Pharm
December 2024
Laboratoire SMS, UR 3233, Université de Rouen Normandie, Normandie Université, F76000, Rouen, France. Electronic address:
Broparestrol has been used as a drug to treat acne in the form of a mixture of its two stereoisomers. Although it has been withdrawn from the market, the binary system is rich in polymorphism and understanding the phase behaviour of the binary system involving the E- and Z-isomers is challenging. Physical mixtures do not immediately give rise to equilibrium phase behaviour, whereas recrystallization often leads to metastable phases and the appearance of stable phases can take years.
View Article and Find Full Text PDFEnviron Int
December 2024
Institute of Environmental Assessment and Water Research (IDAEA-CSIC), 08034 Barcelona, Spain. Electronic address:
Carbonaceous aerosols (CA), composed of black carbon (BC) and organic matter (OM), significantly impact the climate. Light absorption properties of CA, particularly of BC and brown carbon (BrC), are crucial due to their contribution to global and regional warming. We present the absorption properties of BC (b) and BrC (b) inferred using Aethalometer data from 44 European sites covering different environments (traffic (TR), urban (UB), suburban (SUB), regional background (RB) and mountain (M)).
View Article and Find Full Text PDFDent Mater
December 2024
SCOI-Study and Control of Oral Infections Lab, Faculty of Odontology, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona 08195, Spain; Catalan Institute for Research and Advanced Studies (ICREA), Barcelona 08010 Spain; Institute for Bioengineering of Catalonia (IBEC), Barcelona 08028, Spain; BOBI-Bioinspired Oral Biomaterials and Interfaces, UPC-Universitat Politècnica de Catalunya-Barcelona Tech, Barcelona 08019, Spain. Electronic address:
BJS Open
October 2024
Department of Electronic Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain.
Circulation
December 2024
Department of Physiology and Pharmacology, Libin Cardiovascular Institute, University of Calgary, Canada (B.S., M. Ni, Y.L., Z.S., H.W., H.-L.Z., J.W., D.B., S.C., W.G., J.Y., S.T., J.P.E., R.W., S.R.W.C.).
Interface Focus
December 2024
Department of Mechanical Engineering, Institute of Continuum Mechanics and Biomechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
The brain is arguably the most complex human organ and modelling its mechanical behaviour has challenged researchers for decades. There is still a lack of understanding on how this multiphase tissue responds to mechanical loading and how material parameters can be reliably calibrated. While previous viscoelastic models with two relaxation times have successfully captured the response of brain tissue, the Theory of Porous Media provides a continuum mechanical framework to explore the underlying physical mechanisms, including interactions between solid matrix and free-flowing interstitial fluid.
View Article and Find Full Text PDFJ Int AIDS Soc
December 2024
International Health Program (PROSICS), Direcció Territorial de Malalties Infeccioses Metropolitana Nord, Institut Català de la Salut, Badalona, Spain.
Introduction: The retention in care of patients undergoing antiretroviral therapy (ART) is a cornerstone for preventing AIDS-associated morbidity and mortality, as well as further transmission of HIV. Adherence to ART poses particular challenges in conflict-affected settings like the Central African Republic (CAR). The study objective was to estimate the rate of lost-to-follow-up (LTFU) and determine factors associated with LTFU among patients living with HIV under ART in CAR.
View Article and Find Full Text PDFClin Exp Optom
December 2024
Department of Optics and Optometry, Universitat Politècnica de Catalunya, Terrassa, Spain.
Clinical Relevance: Access to high-quality educational resources is essential for patients with low vision. Providing curated recommendations for reliable materials can help ensure patients receive accurate information for effective visual health management.
Background: Visual impairment is a global issue affecting millions.
Front Pediatr
November 2024
Real World Epidemiology Research Group, Fundació Institut Universitari per a la Recerca a l'Atenció Primària de Salut Jordi Gol I Gurina (IDIAPJGol), Barcelona, Spain.
Introduction: This study aims to investigate the relationship between deprivation, as measured by a socioeconomic deprivation index (SDI) score for census tract urban areas, and COVID-19 infections and vaccine uptake among children and adolescents before and after the vaccination rollout in Catalonia, Spain.
Methods: We conducted a population-based cohort study using primary care records. Individuals were followed 3 months before the start of the vaccination campaign in Spain and 3 months after.
Nat Commun
December 2024
Centre de Recerca Matemàtica (CRM), Bellaterra, Spain.
Acting in the natural world requires not only deciding among multiple options but also converting decisions into motor commands. How the dynamics of decision formation influence the fine kinematics of response movement remains, however, poorly understood. Here we investigate how the accumulation of decision evidence shapes the response orienting trajectories in a task where freely-moving rats combine prior expectations and auditory information to select between two possible options.
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