Estudio oscilopolarográfico de dos derivados 5,4d pirimidínicos

Se ha estudiado la reducción electroquímica sobre el electrodo de gota de mercurio del 2,6-bis(morfolino)-4-[( Beta -hidroxi-etil)-metil-amino] -pirimido (5,4d)pirimidina(sustancia 1) y 2,4,6, -tris(morfolino )-pirimido(5 ,4d)pirimidina(sustancia I1). Los datos oscilopolarográficos ponen de manifiesto que el producto de la reacción catódica se abosrbe intensamente sobre la superficie del electrodo indicador.It has been studied electrochemical reduction of 2,6-bis(morpholino)-4-[( B-hydroxy-etil)-methylamino] -pyrimido(5,4d) pyrimidine (1) and 2,4,6-tris(morpholino)-pyrimido (5,4d) pyrimidine (I1)

An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Large datasets are now ubiquitous as technology enables higher-throughput experiments, but rarely can a research field truly benefit from the research data generated due to inconsistent formatting, undocumented storage or improper dissemination. Here we extract all the meaningful device data from peer-reviewed papers on metal-halide perovskite solar cells published so far and make them available in a database. We collect data from over 42,400 photovoltaic devices with up to 100 parameters per device. We then develop open-source and accessible procedures to analyse the data, providing examples of insights that can be gleaned from the analysis of a large dataset. The database, graphics and analysis tools are made available to the community and will continue to evolve as an open-source initiative. This approach of extensively capturing the progress of an entire field, including sorting, interactive exploration and graphical representation of the data, will be applicable to many fields in materials science, engineering and biosciences

Determination of Vecuronium Bromide in Pharmaceuticals: Development, Validation and Comparative Study of HPLC and CZE Analytical Methods

Vecuronium bromide is a neuromuscular blocking agent used for anesthesia to induce skeletal muscle relaxation. HPLC and CZE analytical methods were developed and validated for the quantitative determination of vecuronium bromide. The HPLC method was achieved on an amino column (Luna 150 x 4.6 mm, 5 mu m) using UV detection at 205 nm. The mobile phase was composed of acetonitrile:water containing 25.0 mmol L(-1) of sodium phosphate monobasic (50:50 v/v), pH 4.6 and flow rate of 1.0 mL min(-1). The CZE method was achieved on an uncoated fused-silica capillary (40.0 cm total length, 31.5 cm effective length and 50 mu m i.d.) using indirect UV detection at 230 nm. The electrolyte comprised 1.0 mmol L(-1) of quinine sulfate dihydrate at pH 3.3 and 8.0% of acetonitrile. The results were used to compare both techniques. No significant differences were observed (p > 0.05).CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)[142664/2005-7]Spanish Education and Science Ministery[CTQ2007-61503