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Mostrando ítems 1111-1120 de 1138
Artículo
Low CD4/CD8 ratio is associated with increased morbidity and mortality in late and non‑late presenters: results from a multicentre cohort study, 2004–2018
(Biomed Central LTD, 2022)
Background: To study whether the association between the CD4/CD8 ratio variation over time and the develop‑ ment of clinical outcomes vary in late presenters (CD4 count<350/µL or AIDS event at enrolment) or advanced ...
Artículo
Tackling slip effects in the nonlinear flow properties of gellan fluid gels
(Wiley, 2019-01)
Gellan gum is a biopolymer widely used in the food, pharmaceutical, chemical, and agrochemical fields. Its ability to form a strong gel makes it possible to produce fluid gels. These materials present an apparent yield ...
Artículo
Enhancing the catalytic properties of well-defined electrophilic platinum complexes
(Royal Society of Chemistry, 2020)
Platinum complexes have been often considered as the least reactive of the group 10 triad metals. Slow kinetics are behind this lack of reactivity but, still, some industrially relevant catalytic process are dominated by ...
Artículo
Adsorption and activation of CO2 on Pt/CeOx/TiO2(110): Role of the Pt-CeOx interface
(Elsevier, 2021)
The adsorption and dissociation of CO2 on TiO2(110), CeOx/TiO2(110) and Pt/CeOx/TiO2(110) surfaces has been examined using Ambient Pressure X-ray Photoelectron Spectroscopy (AP-XPS). The substrates under study exhibited ...
Artículo
Assessment of vulnerability to overheating at a regional scale through parametric simulation models and cooling degree-days analysis: the case of southern Spanish social housing stock
(Elsevier, 2023-08-15)
The urgent need to adapt urban environments to extreme weather conditions due to global warming has become a priority when allocating European funds. Current regional retrofitting plans focus on improving the well-being ...
Artículo
Understanding the Photocatalytic Properties of Pt/CeOx/TiO2: Structural Effects on Electronic and Optical Properties
(Wiley, 2019-06-07)
Ceria‐titania interfaces play a crucial role in different chemical processes but are especially promising for the photocatalytic splitting of water using light in the visible wavelength region when Pt is added to the system. ...
Artículo
Electrical properties of bismuth ferrites: Bi2Fe4O9 and Bi25FeO39
(Elsevier, 2019)
Bi2Fe4O9 was prepared by solid-state reaction and the electrical properties measured by impedance spectro- scopy. After annealing in O2 at 900 °C, Bi2Fe4O9 is an electrically-homogeneous insulator. Its high frequency p ...
Ponencia
A QCIF 145dB imager for focal plane processor chips using a tone mapping technique in standard 0.35μm CMOS technology
(2011)
This paper presents a QCIF HDR imager where visual information is simultaneously captured and adaptively compressed by means of an in-pixel tone mapping scheme [1]. The tone mapping curve (TMC) is calculated from a ...
Artículo
Regulation of the Salmonella enterica std fimbrial operon by DNA adenine methylation, SeqA, and HdfR
(American Society for Microbiology, 2008)
DNA adenine methylase (dam) mutants of Salmonella enterica serovar Typhimurium grown under laboratory conditions express the std fimbrial operon, which is tightly repressed in the wild type. Here, we show that uncontrolled ...
Artículo
Assessing thermal comfort in the Mediterranean social housing stock through test cells: Comparison of double-skin, externally insulated and non-retrofitted facades
(Elsevier, 2022-10)
Climate change will derive in severe repercussions to the built indoor environment, evidencing the importance of retrofitting buildings. Thus, the improvement of energy efficiency of facades is of the utmost relevance, ...