124 research outputs found
EP-1362: Influence of the phantom material on the absorbed-dose energy dependence of the EBT3 radiochromic film
Oligomycin, an inhibitor of complex V of mitochondrial respiratory chain, induces an inflammatory response in rat knee joint
Phosphogypsum waste lime as a promising substitute of commercial limes : a rheological approach
This paper presents the rheological properties of three types of lime putty, specifying the influence of their origin. The study aims to compare a special lime putty prepared from phosphogypsum with a commercial lime powder and an aged lime putty. The results obtained in terms of chemical composition, crystalline structure, grain size and rheological characterization, (linear viscoelasticity, shear rate and time-dependent flow behaviour) are presented in the study. Putties studied present a similar rheological response, which mainly depends on the particle size and water content. Lower values of the linear viscoelastic functions and viscosity were found for the phosphogypsum lime putty, in agreement with the higher particle size. Transient flow tests reveal a predominant elastic response with no significant shear-induced structural perturbations. However, either a thickening phenomenon over time, i.e. rheopexy, favoured at low shear rates, or a viscosity decrease, i.e. thixotropy, favoured at high shear rates, was observed.The authors would like to thank the aid of CITIUS at the University of Seville for the use of their laboratories for the characterization analyses. A.M.B.-L. has received a Ph.D. Research Grant from the Ministerio de Education, Cultura y Deporte (FPU16/03697)
37 THE mtDNA HAPLOGROUP J MODULATES THE NITRIC OXIDE (NO) PRODUCTION AND TELOMERE LENGTH. ROLE IN OSTEOARTHRITIS (OA)
Identification of novel adipokines in the joint.Differential expression in healthy and osteoarthritis tissues
OBJECTIVES: Emerging data suggest that several metabolic factors, released mainly by white adipose tissue (WAT) and joint tissues, and collectively named adipokines, might have a role in the pathophysiology of OA. Recently, novel adipokines such as SERPINE2, WISP2, GPNMB and ITIH5 have been identified in WAT. The main goal of this study was to analyse the expression of these novel adipokines in synovium, infrapatellar fat pad and chondrocytes and to compare the expression of these molecules in healthy and OA tissues. METHODS: Synovial tissues, infrapatellar fat pad and chondrocytes were obtained from 36 OA patients (age 52-85; mean BMI 28.9) who underwent total knee replacement surgery. Healthy synovial tissues and infrapatellar fat pad were obtained from 15 traumatic knee patients (age 23-53; mean BMI 23.5). mRNA and protein expression were determined by qRT-PCR and western blot analysis respectively. RESULTS: All the novel adipokines, matter of our study, are expressed in OA synovium, infrapatellar fat pad and chondrocytes. Moreover, we detected a differential expression of SERPINE2 and ITIH5 in OA synovial tissues as compared to healthy samples. Finally, we also observed an increased expression of WISP2 in OA infrapatellar fat pad in comparison to healthy controls. CONCLUSIONS: In this study we demonstrated for the first time the expression of four novel adipokines in different joint tissues and how these molecules are differentially expressed in healthy and OA joint tissues.Xunta de Galicia/SERGASInstituto de Salud Carlos III (ISCIII)Fundación Ramón DomínguezMinisterio de Educación de Españ
Characterization and Analysis of the Carbonation Process of a Lime Mortar Obtained from Phosphogypsum Waste
This work addresses the reuse of waste products as a raw material for lime putties, which are one of the components of mortar. 1:3 Lime/sand mortars very similar to conventional construction mortars were prepared using a lime putty obtained from the treatment of phosphogypsum with sodium hydroxide. The physical, rheological and mechanical properties of this phosphogypsum-derived mortar have been studied, as well as the mineralogical composition, microstructure by scanning electron microscope (SEM) and curing process by monitoring carbonation and ultrasonic propagation velocity. Considering the negative influence of sulphates on the hardened material, the behaviour of the material after sulphates precipitation by adding barium sulphate was additionally tested. Carbonation progressed from the outside to the inside of the specimen through the porous system by Liesegang rings patterns for mortars with soluble sulphates, while the carbonation with precipitated sulphates was controlled by diffusion-precipitation. Overall, the negative influence of low-sulphate contents on the mechanical properties of mortars was verified. It must be highlighted the importance of their precipitation to obtain adequate performance.This research was funded by Programa Estatal I+D+i Retos de la Sociedad of the Ministry of Science and Innovation (Spain), which supported this research (MAT2017-84228-R research project)
Phosphogypsum waste lime as a promising substitute of commercial limes: A rheological approach
This paper presents the rheological properties of three types of lime putty, specifying the influence of their origin. The study aims to compare a special lime putty prepared from phosphogypsum with a commercial lime powder and an aged lime putty. The results obtained in terms of chemical composition, crystalline structure, grain size and rheological characterization, (linear viscoelasticity, shear rate and time-dependent flow behaviour) are presented in the study. Putties studied present a similar rheological response, which mainly depends on the particle size and water content. Lower values of the linear viscoelastic functions and viscosity were found for the phosphogypsum lime putty, in agreement with the higher particle size. Transient flow tests reveal a predominant elastic response with no significant shear-induced structural perturbations. However, either a thickening phenomenon over time, i.e. rheopexy, favoured at low shear rates, or a viscosity decrease, i.e. thixotropy, favoured at high shear rates, was observed
The mtDNA haplogroups associate with different methylation patterns in articular chondrocytes
Public-private partnerships and sustainable development goals: proposal for the implementation of the 2030 Agenda
The importance of non-governmental organizations of achieving the
sustainable development goals: The fight against racial
discrimination of Roma in Europe / Cristina Hermida del Llano (pp.
15-26). -- Investiment promotion regimes for least developed
countries / María Ángeles Cano Linares (pp. 27-45). -- Alliances
with international organizations: How the OSCE has contributed to
the SDGs / Elena C. Díaz Galán (pp. 47-58). -- Spanish commitment
to official development aid with gender perspective / Diana M. Verdiales López (pp. 59-77). -- Project of entrepreneurship of the
Guambiano indigenous community: Public-private alliances in the
Republic of Colombia / Cristina del Pardo Higuera (pp. 79-95). --
The contribution of petroleum companies to enviromental protection
in a framework of compliance with the 2030 Agenda: a necessary
alliance / María Sagrario Morán Blanco (pp. 97-122). -- Public-private partnerships and access to water and sanitation in Latin America (SDG 6) / Manuel Rodríguez Barrigón (123-138). -- The renewed commercial and investment agreements: the progressive incorporation of Human Rights and sustainable development goals / Jorge Urbaneja Cillán (pp. 139-152). -- Towards using data as a development lever for cities: the case of Singapore and the smart nation initiative / Benoît Lopez (pp. 153-162). -- Which access to green technologies for developing countries? / Dayana Morales Mina (pp. 163-172). -- Strenght institutional and normative framework to implement effective capacity building actions: a critical regional analysis / Andrés Bautista-Hernáez (pp. 173-185)
Obtaining cloud top height from WRF model vertical profiles: application to the EUSO program
The objective of the Extreme Universe Space Observatory (EUSO) program is detection and measurement of high-energy particles that reach earth?s atmosphere from space. Clouds at mid and upper levels of the troposphere can interfere with such detection. Therefore, determining cloud top height with high accuracy is crucial to estimating the effect of clouds on these measurements.With this aim, we developed a method to extract that height using cloud temperature via vertical profiles predicted by the WRF model
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