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Mostrando ítems 11417-11436 de 11843
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Upgrading of heavy coker naphtha by means of catalytic cracking in refinery FCC unit
(Elsevier B.V., 2020-08)The upgrading of heavy coker naphtha under conditions of the industrial fluid catalytic cracking (FCC) unit has been investigated, with the aim of obtaining light olefins and a gasoline fraction suitable to be used in the ... -
Upgrading of sewage sludge by demineralization and physical activation with CO2: Application for methylene blue and phenol removal
(2017-09)Carbon-based adsorbents were prepared by the physical activation of sewage sludge with CO2 through an integrated method (without a precarbonization stage). The activation was conducted at different temperatures (600e1000 ... -
Upgrading Polyurethanes into Functional Ureas through the Asymmetric Chemical Deconstruction of Carbamates
(American Chemical Society, 2023-01)The importance of systematic and efficient recycling of all forms of plastic is no longer a matter for debate. Constituting the sixth most produced polymer family worldwide, polyurethanes, which are used in a broad variety ... -
Upgrading the Performance of Cholesteric Liquid Crystal Lasers: Improvement Margins and Limitations
(MDPI, 2017)The topic of cholesteric-liquid-crystal lasers is a rapidly expanding research area in the field of soft-matter photonics. The increasing interest in this field is due to the high versatility that these lasers may possibly ... -
Upgrading the Power Grid Functionalities with Broadband Power Line Communications: Basis, Applications, Current Trends and Challenges
(MDPI, 2022)This article reviews the basis and the main aspects of the recent evolution of Broadband Power Line Communications (BB-PLC or, more commonly, BPL) technologies. The article starts describing the organizations and alliances ... -
Upper Cretaceous European theropod palaeobiodiversity, palaeobiogeography and the intra-Maastrichtian faunal turnover: new contributions from the Iberian fossil site of Lano
(Wiley, 2022-01)[EN] A total of 227 theropod teeth have so far been recovered from the upper Campanian Lano site (northern Iberian Peninsula). The teeth were studied for their qualitative and quantitative features. From the theropod sample ... -
Upper Palaeolithic hunter–gatherer societies in the Basque Country (Iberian Peninsula) in the light of palaeoenvironmental dynamics in the last Glacial Period: cultural adaptations and the use of biotic resources
(Cambridge University Press, 2023-07)Upper Palaeolithic archaeological sites in the Basque Country have been excavated for over a century. They have yielded a rich palaeoenvironmental record with zoological and botanical remains that have been obtained in ... -
Upregulated phospholipase D2 expression and activity is related to the metastatic properties of melanoma
(Spandidos, 2022-05)[EN] The incidence rates of melanoma have increased steadily in recent decades and nearly 25% of the patients diagnosed with early-stage melanoma will eventually develop metastasis, for which there is currently no fully ... -
Uptake and Effects of Graphene Oxide Nanomaterials Alone and in Combination with Polycyclic Aromatic Hydrocarbons in Zebrafish
(Elsevier, 2021-06-25)Because of its surface characteristics, once in the aquatic environment, graphene could act as a carrier of pollutants, such as polycyclic aromatic hydrocarbons (PAHs), to aquatic organisms. In this study we aimed to (1) ... -
Uptake and factors that influence the use of 'sit less, move more' occupational intervention strategies in Spanish office employees
(Biomed Central, 2014-12-10)Background: Little is known about the types of 'sit less, move more' strategies that appeal to office employees, or what factors influence their use. This study assessed the uptake of strategies in Spanish university office ... -
Uptake and intracytoplasmic storage of pigmented particles by human CD34+stromal cells/telocytes: endocytic property of telocytes
(Wiley Blackwell, 2014-12)We studied the phagocytic-like capacity of human CD34+ stromal cells/telocytes (TCs). For this, we examined segments of the colon after injection of India ink to help surgeons localize lesions identified at endoscopy. Our ... -
URB447 Is Neuroprotective in Both Male and Female Rats after Neonatal Hypoxia–Ischemia and Enhances Neurogenesis in Females
(MDPI, 2024-01-28)The need for new and effective treatments for neonates suffering from hypoxia–ischemia is urgent, as the only implemented therapy in clinics is therapeutic hypothermia, only effective in 50% of cases. Cannabinoids ... -
Urban Development and Sustainable Mobility: A Spatial Analysis in the Buenos Aires Metropolitan Area
(MDPI, 2021-02-04)This study provides empirical evidence on the links between urban development factors and the use of specific modes of transport in commuting in the Buenos Aires metropolitan area. The case study is of interest because ... -
Urban Energy Transitions in Europe, towards Low-Socio-Environmental Impact Cities
(MDPI, 2021-10-21)Achieving the ambitious targets set by Europe in its 2050 roadmap, moving away from fossil fuels towards renewable energy sources, while reducing carbon emissions, will require a radical change in Europe’s energy system. ... -
Urban environment and cognitive and motor function in children from four European birth cohorts
(Elsevier, 2022-01)[EN]Background: The urban environment may influence neurodevelopment from conception onwards, but there is no evaluation of the impact of multiple groups of exposures simultaneously. We investigated the association between ... -
Urban Forest Tweeting: Social Media as More-Than-Human Communication in Tokyo’s Rinshinomori Park
(MDPI, 2023-03-23)Urban parks are places that have significant impact on the physical and mental health of citizens, but they are also for safeguarding biodiversity and thus fostering human–nature interactions in the everyday landscape. The ... -
Urban Green Infrastructure Accessibility: Investigating Environmental Justice in a European and Global Green Capital
(MDPI, 2023-08-02)Access to green spaces offers numerous benefits to citizens and is key to achieving environmental justice. This article explores accessibility to green infrastructure (GI) in Vitoria-Gasteiz, Spain, the European and Global ... -
Urban Green Infrastructure as a Strategy to Address Urban Energy Efficiency and Sustainability. A Case Study of Milagrosa (Pamplona)
(MDPI, 2021-12-21)Green Infrastructure (GI) has gained importance in recent years as it has been revealed as an essential piece to face the environmental problem generated by the incessant growth of urbanization, loss of biodiversity, and ... -
Urban Heat Islands and Thermal Comfort: A Case Study of Zorrotzaurre Island in Bilbao
(MDPI, 2021-05-28)This study assesses the impact of a heat wave on the thermal comfort of an unconstructed area: the North Zone of the Island of Zorrotzaurre (Bilbao, Spain). In this study, the impact of urban planning as proposed in the ... -
Urban regeneration as population health intervention: a health impact assessment in the Bay of Pasaia (Spain)
(Biomed Central, 2016-09-15)Background: An important health issue in urban areas is how changes arising from the regeneration of city-areas affect social determinants of health and equity. This paper examines the impacts attributable to a new fish ...