Carbon dioxide conversion to C1 - C2 compounds in a microbial electrosynthesis cell with in situ electrodeposition of nickel and iron

Highlights • Continuous CH4 bioelectrosynthesis from CO2 demonstrated with 80% or higher Coulombic Efficiency • At pH values below 8 CH4 cathodic off-gas contains up to 85% CH4 • At pH above 8.5, production of acetate and then ethanol (up to 8 g L−1) was obtained • Coulombic efficiency remained above 80% • 16S sequencing showed proliferation of Clostridium, Methanosaeta, Methanobrevibacter and Methanobacterium spp at the cathode This study demonstrates the continuous conversion of CO2 to methane, acetate, and ethanol in a Microbial Electrosynthesis Cell (MESC) with a carbon felt biocathode. The MESC was inoculated with a mixed anaerobic microbial consortium and operated at a mesophilic temperature of 30 °C. In situ deposition of Ni and Fe was achieved by introducing 0.2 g L−1 of NiSO4 or FeSO4, respectively, into the cathode compartment influent stream. In response, a considerable improvement in MESC performance was observed with a current density of 6.4 mA cm−2 (per separator area) and a CH4 production of 0.83 L (LR d)−1 (R = cathode volume). Once Ni and Fe were removed from the influent solution, the performance remained unchanged. Electron dispersive spectroscopy confirmed Ni and Fe electrodeposition. A shift from CH4 to acetate and ethanol production with concentrations reaching 5 and 8 g L−1, respectively, was observed upon increasing the cathode compartment pH to 8.5–9.0. 16S rRNA gene sequencing showed significant changes in the bacterial population at the cathode with Clostridia representing almost two-thirds of the population. Methanosaeta, Methanobrevibacter, and Methanobacterium species dominated the archaeal community

Performance of diagnostic images for the diagnosis of gallbladder cancer at the Hospital Universitario Mayor - Mederi between 2015 and 2018

El cáncer de vesícula biliar es una patología maligna poco frecuente y de difícil diagnóstico en estadios tempranos. La investigación muestra que el rendimiento diagnóstico de las imágenes es bajo para cáncer de vesícula biliar. En contraste, el abordaje quirúrgico mínimamente invasivo por patología biliar benigna y la mayor frecuencia de colecistectomías se ha relacionado con un aumento del diagnóstico incidental de este cáncer. Es importante la sospecha diagnóstica preoperatoria, para planear y realizar una cirugía con un abordaje quirúrgico óptimo, con técnicas adecuadas, y evitar la diseminación de la enfermedad hacia la cavidad peritoneal. Sin embargo, en cuanto a la posibilidad de realizar un diagnóstico certero y oportuno preoperatorio no siempre es posible.Gallbladder cancer is a rare malignant disease that is difficult to diagnose in the early stages. Research shows that the diagnostic performance of images is low for gallbladder cancer. In contrast, the minimally invasive surgical approach due to benign biliary pathology and the greater frequency of cholecystectomies has been associated with an increase in the incidental diagnosis of this cancer. Preoperative diagnostic suspicion is important, to plan and perform surgery with an optimal surgical approach, with appropriate techniques, and to prevent the spread of the disease to the peritoneal cavity. However, as regards the possibility of making an accurate and timely preoperative diagnosis, it is not always possible.2022-02-11 01:01:01: Script de automatizacion de embargos. info:eu-repo/date/embargoEnd/2022-02-102020-02-10 10:05:01: Script de automatizacion de embargos. No se encontro correo pero la autora marco restricción, se le envia comunicación a la autora: epositorio Institucional EdocUR - Lun 10/02/2020 9:57 AM - Respetada Paula Torres, reciba un cordial saludo, - Se ha realizado la publicación de su documento en el Repositorio Institucional EdocUR de la Universidad del Rosario. Usted escogió la opción "Restringido (Temporalmente bloqueado)", por lo que el documento ha quedado con embargo hasta el 10 de febrero de 2022 en concordancia con las Políticas de Acceso Abierto de la Universidad. Si usted desea dejarlo con acceso abierto antes de finalizar dicho periodo o si por el contrario desea extender el embargo al finalizar este tiempo, puede enviar un correo a esta misma dirección realizando la solicitud. - Tenga en cuenta que los documentos en acceso abierto propician una mayor visibilidad de su producción académica y científica. - Quedo atenta a cualquier inquietud o sugerencia

Performance of diagnostic images for the diagnosis of gallbladder cancer at the Hospital Universitario Mayor - Mederi between 2015 and 2018

El cáncer de vesícula biliar es una patología maligna poco frecuente y de difícil diagnóstico en estadios tempranos. La investigación muestra que el rendimiento diagnóstico de las imágenes es bajo para cáncer de vesícula biliar. En contraste, el abordaje quirúrgico mínimamente invasivo por patología biliar benigna y la mayor frecuencia de colecistectomías se ha relacionado con un aumento del diagnóstico incidental de este cáncer. Es importante la sospecha diagnóstica preoperatoria, para planear y realizar una cirugía con un abordaje quirúrgico óptimo, con técnicas adecuadas, y evitar la diseminación de la enfermedad hacia la cavidad peritoneal. Sin embargo, en cuanto a la posibilidad de realizar un diagnóstico certero y oportuno preoperatorio no siempre es posible.Gallbladder cancer is a rare malignant disease that is difficult to diagnose in the early stages. Research shows that the diagnostic performance of images is low for gallbladder cancer. In contrast, the minimally invasive surgical approach due to benign biliary pathology and the greater frequency of cholecystectomies has been associated with an increase in the incidental diagnosis of this cancer. Preoperative diagnostic suspicion is important, to plan and perform surgery with an optimal surgical approach, with appropriate techniques, and to prevent the spread of the disease to the peritoneal cavity. However, as regards the possibility of making an accurate and timely preoperative diagnosis, it is not always possible

Synthesis of a one-dimensional coordination polymer of nickel(II) with a beta-oxodithioester ligand

Articulo que describe la síntesis y caracterización de un polímero de coordinación de níquel(II) derivado de ligantes beta-oxoditioester.Bis-[methyl-1-hydroxy-1-cyclopentene-2-dithiocarboxylate-O,S]nickel(II) 1 was prepared starting from methyl 2-hydroxycyclopent- 1-encarbodithioate ligand (CPDT) and Ni(II), and catena-[(2-4,4-Bipyril)-bis-(methyl-2-hydroxy-1-cyclopentene-2- dithiocarboxylate-O,S)]nickel(ΙΙ) 2 was prepared in good yields from 1 plus 4,4-bipyridyl (bpy) by shish-kebab methodology. The structure of 1 was confirmed by FTIR, elemental analysis, 1H NMR, UV–vis in chloroform solution and in solid, XPS, and PXRD. Compound 2 was characterized by FTIR, elemental analysis, UV–vis in chloroform solution, and in solid, XPS, PXRD, ESR, and solid state magnetization measurements. The structure of the polymer was established mostly by PXRD, ESR, and magnetizationSIEA-UAEMex 3576/201

Phylogenetic analysis of porcine rotavirus in Argentina: increasing diversity of G4 strains and evidence of interspecies transmission

Fil: Irala Parra, Juan Gabriel. National University of Asuncion. IICS. Molecular Biology Department; Paraguay.Fil: Vidales, Graciela. Universidad Nacional de Luján; Argentina.Fil: Gomez, Jorge A. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Enfermedades Infecciosas; Argentina.Fil: Fernandez, Fernando M. Instituto Nacional de Tecnología Agropecuaria; Argentina.Fil: Parreño, Viviana. Instituto Nacional de Tecnología Agropecuaria; Argentina.Fil: Bok, Karin. ANLIS Dr.C.G.Malbrán. Instituto Nacional de Enfermedades Infecciosas; Argentina.Group A rotaviruses are one of the most frequently detected viral agents associated with neonatal diarrhea in piglets. In order to characterize rotavirus (RV) strains circulating in Argentinean swine, four porcine production farms located in Buenos Aires were studied. RV strains genotyped as P[6]G4, P[6]G8 and P[1]G6 were found in piglets under 30 days of age, without diarrhea. Phylogenetic and sequence analysis of the VP7 gene from G4 strains available in databases, reveals five porcine new lineages (III-VII) and three sublineages (VIIa-VIIc). The G4 porcine Argentinean strains were grouped with a porcine RV strain isolated in Brazil and another RV strain isolated from a child with diarrhea in Mexico, constituting an American lineage (VII). On the other hand, porcine G6 and G8 were closely related to RV's circulating in Argentinean cattle and South-American camelids, respectively. The fact that G4 porcine lineages were epidemiologically related to human strains, and G6 and G8 Argentinean porcine strains were found related to bovine and South-American camelids, respectively, suggests that pigs might play a crucial role as reservoir and generator of newly adapted emerging RV strains for human and other species

Synthesis of a one-dimensional coordination polymer of nickel(II) with a beta-oxodithioester ligand

Articulo que describe la síntesis y caracterización de un polímero de coordinación de níquel(II) derivado de ligantes beta-oxoditioester.Bis-[methyl-1-hydroxy-1-cyclopentene-2-dithiocarboxylate-O,S]nickel(II) 1 was prepared starting from methyl 2-hydroxycyclopent- 1-encarbodithioate ligand (CPDT) and Ni(II), and catena-[(2-4,4-Bipyril)-bis-(methyl-2-hydroxy-1-cyclopentene-2- dithiocarboxylate-O,S)]nickel(ΙΙ) 2 was prepared in good yields from 1 plus 4,4-bipyridyl (bpy) by shish-kebab methodology. The structure of 1 was confirmed by FTIR, elemental analysis, 1H NMR, UV–vis in chloroform solution and in solid, XPS, and PXRD. Compound 2 was characterized by FTIR, elemental analysis, UV–vis in chloroform solution, and in solid, XPS, PXRD, ESR, and solid state magnetization measurements. The structure of the polymer was established mostly by PXRD, ESR, and magnetizationSIEA-UAEMex 3576/201