Millora del nivell de formació realitzan pràctiques en Serveis de Suport a la Recerca. Un cas pràctic real

La motivació del present projecte és intentar aprofitar els recursos de que disposa el SAQ per a que alumnes de diferents titulacions (Químiques, Ciències Ambientals i Enginyeria Química) puguin fer pràctiques d'anàlisi instrumental amb aparells de característiques similars als que es trobaran quan surtin de la Universitat i tractant els problemes analítics amb una perspectiva globa

El treball social amb famílies. Una mirada des de les facilitats i les dificultats.

El treball social amb les famílies està implicat en el propi desenvolupament de la professió. A partir de les entrevistes realitzades en la fase inicial de l'estudi "El treball social amb famílies", realitzat pel Grup de Recerca i Innovació en Treball social (GRITS) de la Universitat de Barcelona, hem volgut copsar quines dificultats i oportunitats planteja aquest tipus de treball en l'exercici quotidià dels professionals. Els treballadors socials2 estan satisfets dels resultats del treball amb les famílies i el consideren una important eina de canvi que beneficia l'individu i la comunitat. En aquest article es destaquen elements que poden donar suport a aquest treball i d'altres que el poden dificultar com són les institucionals, els propis treballadors socials i la complexitat de les noves situacions familiars

Le peuplement humain pendant le Pléistocène et l’Holocène dans la province de Jerada, Maroc oriental : introduction d’un projet de recherche

[EN] The Aïn Beni Mathar – Guefaït (ABM-GFT) region in Eastern Morocco is the object of an archaeological, palaeontological, geological and geochronological research project, led by an international team since 2006. The research in this former fluvio-lacustrine basin, roughly 2000 km2, has revealed a significant number of Pleistocene and Holocene sites. Here we introduce the research project, that we conduct in the region, the main issues it aims to address, and the results already obtained.[FR] Depuis 2006, la région de Aïn Beni Mathar – Guefaït (ABM-GFT) au Maroc Oriental, fait l’objet d’un projet de recherche en archéologie, paléontologie, géologie et géochronologie, mené par une équipe internationale. Ces recherches ont permis la découverte d’un nombre significatif de gisements d’âge Pléistocène et Holocène, dans un ancien bassin fluvio-lacustre, qui s’étend sur une surface de 2000 km2. Notre objectif ici est de présenter le projet de recherche, que nous entamons dans la région, la problématique qu’il traite et les premiers résultats déjà obtenus.Funding for this research was provided by: Palarq Foundation, Spanish Ministry of Culture and Sport (Ref: 42-T002018N0000042853 & 170-T002019N0000038589), Direction of Cultural Heritage (Ministry of Culture and Communication, Morocco), Faculty of Sciences (Mohamed 1r University of Oujda, Morocco), INSAP (Institut National des Sciences de l’Archéologie et du Patrimoine), Spanish Ministry of Science, Innovation and Universities (Ref: CGL2016-80975-P, CGL2016-80000-P, PGC2018-095489-B-I00 and PGC2018-093925-B-C31) and Research Groups Support of the Catalonia Government (2017 SGR 836 and 2017 SGR 859). R.S-R, M.G.CH., J.I.M., A.C., F.R., A.R.-H., E.A., I.E., F.B., J.A., HA.B., P.S., P.P., D.L., I.R. y E.M. research is funded by CERCA Programme/ Generalitat de Catalunya. J.I.M. and A.R.-H research is funded by the Spanish Minitry of Science and Innovation under the “María de Maeztu” Program for Unities of Excellence (CEX2019-000945-M). M.S. has been granted by the Research Program UAM Tomás y Valiente 2019. C.T. is funded by the Ramón y Cajal Program. M.F. and M.E.A. received a fellowship under the Erasmus Mundus Scholarship of the European Education and Culture Executive Agency in the Master in Quaternary and Prehistory at URV. The research of M.D. is funded by the Australian Research Council (ARC) Future Fellowship Grant FT150100215 and the Ramón y Cajal Program (RYC2018-025221-I). P.P. has been granted a post-doctoral post under the Spanish Ministry of Science and Innovation “Juan de la Cierva-Incorporación” Program (Ref. IJC2020-044108-I). E.M-R. is beneficiary of a PTA Ref. PTA201714619-I. G.G.-A. has been granted a “Ford - Apadrina la Ciencia” contract. C.D.-C has been granted a Fundación Atapuerca fellowship. A.C.A. was funded by Junta de Castilla y León (project BU235P18) and the European Regional Development Fund (ERDF). The Institut Catalá de Paleoecologia Humana i Evolució Social (IPHES-CERCA) has received financial support from the Spanish Ministry of Science and Innovation through the ‘María de Maeztu’ program for Units of Excellence (CEX2019-000945-M).Peer reviewe

A simple approach for DNA detection on carbon nanotube microelectrode arrays

We present a simple approach for DNA detection which profits from the use of miniaturized carbon nanotube (CNT) electrodes, Ru(NH 3) 6 2+/3+ as redox DNA hybridization reporters and sensitive but simple electrochemical techniques (chronocoulometry and impedance spectroscopy). The manufacturing process employed in this work yielded robust, highly controlled and well-defined microelectrode arrays of vertically aligned multi-walled CNTs which facilitated very reproducible electroanalytical measurements. The hybridization process and its efficiency were monitored and quantified with chronocoulometric measurements by following up the Ru(NH 3) 6 2+/3+ adsorption at the DNA phosphate backbone. Limits of detection of 1 nM and an efficiency of nearly 100% were found with such methodology. One of the advantages of using CNT microelectrodes is that the scaling down of the electrode size allows the impedimetric detection with such highly positively charged redox reporters, using the charge transfer resistance as an indicator of the DNA hybridization. Such detection scheme would not have been possible in macroscopic CNT electrodes due to the dominance of the diffusion controlled processes. Limits of detection of 100 pM were achieved using the impedimetric technique. The combination of the miniaturized and robust CNT-based electrodes, the advantages of the chosen redox reporter and the electrochemical techniques provide a very simple, reproducible and efficient strategy that could facilitate genosensing and diagnosis. © 2011 Elsevier B.V. All rights reserved.Peer Reviewe

Millora del nivell de formació realitzan pràctiques en Serveis de Suport a la Recerca. Un cas pràctic real

La motivació del present projecte és intentar aprofitar els recursos de que disposa el SAQ per a que alumnes de diferents titulacions (Químiques, Ciències Ambientals i Enginyeria Química) puguin fer pràctiques d'anàlisi instrumental amb aparells de característiques similars als que es trobaran quan surtin de la Universitat i tractant els problemes analítics amb una perspectiva globa

The distinct cell physiology of Bradyrhizobium at the population and cellular level

Abstract The α-Proteobacteria belonging to Bradyrhizobium genus are microorganisms of extreme slow growth. Despite their extended use as inoculants in soybean production, their physiology remains poorly characterized. In this work, we produced quantitative data on four different isolates: B. diazoefficens USDA110, B. diazoefficiens USDA122, B. japonicum E109 and B. japonicum USDA6 which are representative of specific genomic profiles. Notably, we found conserved physiological traits conserved in all the studied isolates: (i) the lag and initial exponential growth phases display cell aggregation; (ii) the increase in specific nutrient concentration such as yeast extract and gluconate hinders growth; (iii) cell size does not correlate with culture age; and (iv) cell cycle presents polar growth. Meanwhile, fitness, cell size and in vitro growth widely vary across isolates correlating to ribosomal RNA operon number. In summary, this study provides novel empirical data that enriches the comprehension of the Bradyrhizobium (slow) growth dynamics and cell cycle

The distinct cell physiology of Bradyrhizobium at the population and cellular level

The α-Proteobacteria belonging to Bradyrhizobium genus are microorganisms of extreme slow growth. Despite their extended use as inoculants in soybean production, their physiology remains poorly characterized. In this work, we produced quantitative data on four different isolates: B. diazoefficens USDA110, B. diazoefficiens USDA122, B. japonicum E109 and B. japonicum USDA6 which are representative of specific genomic profiles. Notably, we found conserved physiological traits conserved in all the studied isolates: (i) the lag and initial exponential growth phases display cell aggregation; (ii) the increase in specific nutrient concentration such as yeast extract and gluconate hinders growth; (iii) cell size does not correlate with culture age; and (iv) cell cycle presents polar growth. Meanwhile, fitness, cell size and in vitro growth widely vary across isolates correlating to ribosomal RNA operon number. In summary, this study provides novel empirical data that enriches the comprehension of the Bradyrhizobium (slow) growth dynamics and cell cycle.Instituto de Biotecnología y Biología Molecula