Photovoltaic Performance of Phase-Pure Orthorhombic BiSI Thin-Films

A single-precursor solution approach is developed for depositing stoichiometric BiSI thin films featuring pure paraelectric orthorhombic (Pnam) phase. The compact and homogeneous films are composed of flake-shaped grains oriented antiplanar to the substrate and display a sharp optical transition corresponding to a bandgap of 1.57 eV. Optical and Raman signatures of the thin films are rationalized using the quasiparticle G0W0@PBE0 and density functional perturbation theory calculations. Electrochemical impedance spectroscopy revealed n-type doping with valence and conduction band edges located at 4.6 and 6.2 eV below vacuum level, respectively. Planar BiSI solar cells are fabricated with the architecture: glass/FTO/SnO2/BiSI/F8/Au, where F8 is poly­(9,9-di-n-octylfluorenyl-2,7-diyl), showing record conversion efficiency of 1.32% under AM 1.5 illumination

Zn thiosacharinates: From ionic to polymeric structures. Synthesis, characterization and cell proliferation inhibition studies

A series of Zn thiosacharinates complexes with nitrogen donor co-ligands were synthesized: [Zn(tsac)2(o-phen)], [Zn(tsac)2(TMDP)]n, [(4,4′-bipy)H2][Zn(tsac)4] [Zn(tsac)2(2,2′-bipy)], [Zn(tsac)2(2,2′-bquin)], (tsac, thiosaccharinate anion: 1,1-dioxo-1,2-benzisothiazole-3-thiolato, C7H4NO2S2−, o-phen: 1,10′-phenantroline, TMDP: trimethylenedipyridine, 2,2′-bipy: 2,2′-bipyridine, 4,4′-bipy: 4,4′-bipyridine, 2,2′-bquin: 2,2′-biquinoline). They were fully characterized by means of FTIR, 13C and 1H NMR, elemental analysis and conductivity measurements. Three of them, [Zn(tsac)2(o-phen)], [(4,4′-bipy)H2][Zn(tsac)4], [Zn(tsac)2(TMDP)]n were also characterized by X-ray single crystal diffractometry and their crystal structures are described herein. DFT geometry optimization for the [Zn(tsac)2(o-phen)] complex was performed and its vibrational spectra was predicted. Moreover, we studied the effects of the five complexes on cell proliferation, thus providing preliminary evidence for their therapeutic potential as anti-cancer drugs.Fil: Delgado, Fermin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Freire Espeleta, Eleonora. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Baggio, Ricardo. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: González Pardo, María Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; ArgentinaFil: Dorn, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Dennehy, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentin

Ni-thiosaccharinate complexes: Synthesis, characterization and DFT studies. Biological properties as superoxide dismutase mimetics and as anti-carcinogenic agents

This report describes the synthesis and characterization of two nickel thiosaccharinate complexes, [Ni(tsac)2(PPh3)2] (1) and [Ni(tsac)2(dppe)]·CH3CN (2), where tsac = thiosaccharinate anion, PPh3 = triphenylphosphane and dppe = bis(diphenylphosphanyl)ethane. Elemental analysis, FTIR, 1H, 13C and 31P NMR spectra and single crystal X ray diffraction studies of the complexes are presented. DFT optimizations of the two new compounds were performed in order to verify the FTIR vibrational assignations. The two nickel(II) thiosaccharinate complexes consist of mononuclear units in which the Ni atoms are the centre of square-planar coordination spheres, surrounded by two sulfur thiosaccharinate atoms and two phosphorous atoms from the phosphane ligands. In both complexes, the anions are mono-coordinated to the metal. In the [Ni(tsac)2(PPh3)2] structure, the phosphane moieties are located in trans position. In the [Ni(tsac)2(dppe)] structure, the dppe ligand chelates to the metal centre, as expected. Additionally, the superoxide dismutase (SOD) mimetic activity of the complexes was measured and it is reported herein. The effects of the complexes on cell proliferation were also studied and are described.Fil: Delgado, Fermin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Nicova, Eva. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Agotegaray, Mariela Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: González Pardo, María Verónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Ciencias Biológicas y Biomédicas del Sur. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Instituto de Ciencias Biológicas y Biomédicas del Sur; ArgentinaFil: Dorn, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Burrow, Robert A.. Universidade Federal de Santa Maria; BrasilFil: Dennehy, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentin

DIAGNOSTICO DEL ESTADO DE NUTRICION

MANUAL PARA PRACTICAS DE LABORATORIO, TALLER U OTRA AREA DE APOYO A LA DOCENCI

Cognitive insight in first-episode psychosis : changes during Metacognitive Training

Altres ajuts: The project has been funded by the Instituto de Salud Carlos III (Spanish Government); by the Fondo Europeo de Desarrollo Regional (FEDER), Progress and Health Foundation of the Andalusian Regional Ministry of Health, grant PI-0634/2011; Obra Social La Caixa (RecerCaixa call 2013); and Obra Social Sant Joan de Déu (BML).Background: Metacognitive training (MCT) has demonstrated its efficacy in psychosis. However, the effect of each MCT session has not been studied. The aim of the study was to assess changes in cognitive insight after MCT: (a) between baseline, post-treatment, and follow-up; (b) after each session of the MCT controlled for intellectual quotient (IQ) and educational level. Method: A total of 65 patients with first-episode psychosis were included in the MCT group from nine centers of Spain. Patients were assessed at baseline, post-treatment, and 6 months follow-up, as well as after each session of MCT with the Beck Cognitive Insight Scale (BCIS). The BCIS contains two subscales: self-reflectiveness and self-certainty, and the Composite Index. Statistical analysis was performed using linear mixed models with repeated measures at different time points. Results: Self-certainty decreased significantly (p = 0.03) over time and the effect of IQ was negative and significant (p = 0.02). From session 4 to session 8, all sessions improved cognitive insight by significantly reducing self-certainty and the Composite Index. Conclusions: MCT intervention appears to have beneficial effects on cognitive insight by reducing self-certainty, especially after four sessions. Moreover, a minimum IQ is required to ensure benefits from MCT group intervention

The impact of culture on neuropsychological performance: A global social cognition study across 12 countries

AbstractBackgroundDecades of researches aiming to unveil truths about human neuropsychology may have instead unveil facts appropriate to only a fraction of the world's population: those living in western educated rich democratic nations (Muthukrishna et al., 2020 Psych Sci). So far, most studies were conducted as if education and cultural assumptions on which neuropsychology is based were universals and applied everywhere in the world. The importance given to sociological or cultural factors is thus still relatively ignored. With the growth of international clinical studies on dementia, we believe that documenting the potential inter‐cultural differences at stake in a common neuropsychological assessment is an essential topic. This study thus aimed to explore these potential variations in two classical tasks used in neuropsychology that are composing the mini‐SEA (Bertoux et al., 2012 JNNP), i.e. a reduced version of the well‐known Ekman faces (FER), where one has to recognize facial emotions, and a modified version of the Faux Pas test (mFP), where one has to detect and explain social faux.MethodThe data of 573 control participants were collected through the Social Cognition & FTLD Network, an international consortium investigating social cognitive changes in dementia covering 3 continents (18 research centres in 12 countries). Impact of demographic factors and the effect of countries on performance (mini‐SEA, FER, mFP) were explored through linear mixed‐effects models.ResultAge, education and gender were found to significantly impact the performance of the mini‐SEA subtests. Significant and important variations across the countries were also retrieved, with England having the highest performance for all scores. When controlling for demographical factors, differences within countries explained between 14% (mFP) and 24% (FER) of the variance at the mini‐SEA. These variations were not explained by any economical or sociological metrics.ConclusionImportant variations of performance were observed across the 12 countries of the consortium, showing how cultural differences may critically impact neuropsychological performance in international studies

CARACTERIZACIÓN Y OPTIMIZACIÓN DEL PROCESO DE PERFORACIÓN DE LA EPIDERMIS ASISTIDO POR LÁSER PULSADO DE Er:YAG

Este trabajo propone una metodología que permite relacionar la transmitancia de la epidermis de la piel humana, medida de forma no invasiva, con las características del pulso de luz láser a emplear para conseguir una perforación eficiente en la toma de muestras de sangre. Entendiendo como “eficiente” la generación de la perforación mínima necesaria para alcanzar el flujo capilar en la parte superior de la dermis. A partir de un modelo sencillo propuesto para la transmitancia, medible a través de la epidermis, se establece un criterio de comparación que en relación con modelaciones hechas por el método de Montecarlo revela un comportamiento lineal en el valor de la transmitancia, en la región visible del espectro, en función del “espesor” de la epidermis. Resultados experimentales preliminares obtenidos para la epidermis de la yema de los dedos, permiten proponer un “nuevo” método para determinar el espesor de la epidermis de forma no invasiva. Se discute un modelo semi-empírico de la interacción láser-tejido en el proceso de la perforación de la epidermis asistida por láser de Er:YAG pulsado. La propagación del calor se resuelve numéricamente y el avance del frente de vaporización hacia el interior del material en la superficie irradiada, se condiciona a la variación de la presión durante la acción del pulso láser. Los resultados permiten proponer una metodología para la optimización del proceso de perforación de la epidermis. Se utiliza la tomografía óptica de coherencia para caracterizar la epidermis en dedos reales de forma no invasiva, así como cortes histológicos en tejidos no vivos para evaluar los efectos de la irradiación láser. Para monitorear en tiempo real el proceso de perforación de los diferentes tipos de tejidos utilizados, se emplearon: la técnica fotoacústica de PILA utilizando transductores piezoeléctricos y capacitivos, así como la prueba de haz rasante y cámara ICCD para caracterizar y/o evaluar la evolución temporal del proceso de perforación asistida por lasér de Er:YAG de los tejidos estudiados

Stable and efficient metal-biochar supported catalyst: degradation of model pollutants through sulfate radical-based advanced oxidation processes

This study focuses on the synthesis of metal-based biochar catalysts and their catalytic activation of peroxymonosulfate (PMS, HSO5−) for the degradation of three diferent wastewater model pollutants employing advanced oxidation processes (AOP). Iron, copper, and two diferent cobalt-based catalysts were prepared and evaluated. The catalysts were supported on a biochar obtained from the pyrolysis of woody pruning wastes. They were characterized by C, H, and N elemental analysis,X-Ray difraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM). The metal content in each catalyst was determined by means of atomic absorption spectroscopy (AAS). The degradation reactions of benzoic acid (BA), catechol (C), and cinnamic acid (CA) were carried out in a lab scale batch glass reactor and were followed by UV -Visible spectroscopy (UV-Vis). A colorimetric technique was employed to verify the presence of oxidant during the reaction progress. The catalyst/oxidant optimal ratio was determined for the cobalt catalysts. The mineralization degree of the pollutants after the degradations was verifed by means of total organic carbon (TOC) content in the residual liquids. After 4 h of reaction, the maximum mineralization was reached when C was treated with a cobalt-based catalyst (> 80%), and its stability was evaluated through successive cycles of useFil: Delgado, Fermin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Gutierrez, Victoria Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Dennehy, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; ArgentinaFil: Alvarez, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentin