Synergistic Effects of Co3O4-gC3N4-Coated ZnO Nanoparticles: A Novel Approach for Enhanced Photocatalytic Degradation of Ciprofloxacin and Hydrogen Evolution via Water Splitting.

This research evaluates the efficacy of catalysts based on Co3O4-gC3N4@ZnONPs in the degradation of ciprofloxacin (CFX) and the photocatalytic production of H2 through water splitting. The results show that CFX experiences prompt photodegradation, with rates reaching up to 99% within 60 min. Notably, the 5% (Co3O4-gC3N4)@ZnONPs emerged as the most potent catalyst. The recyclability studies of the catalyst revealed a minimal activity loss, approximately 6%, after 15 usage cycles. Using gas chromatography-mass spectrometry (GC-MS) techniques, the by-products of CFX photodegradation were identified, which enabled the determination of the potential degradation pathway and its resultant products. Comprehensive assessments involving photoluminescence, bandgap evaluations, and the study of scavenger reactions revealed a degradation mechanism driven primarily by superoxide radicals. Moreover, the catalysts demonstrated robust performance in H2 photocatalytic production, with some achieving outputs as high as 1407 µmol/hg in the visible spectrum (around 500 nm). Such findings underline the potential of these materials in environmental endeavors, targeting both water purification from organic pollutants and energy applications.

Leucemia aguda megacarioblastica - LMA-M7: diagnóstico inmunocitoquimico en 2 casos / Annual reports 1994 / Acute megacarioblastic leukemia - LMA-M7: immunocitochemical diagnosis in two cases

La leucemia aguda megacarioblástica es una variedad reconocida desde 1985 y presenta el 10 por ciento de las leucemias agudas no linfoblasticas. Se presentan dos casos de leucemia aguda megacarioblastica, variedad M-7, cuyo diagnóstico diferencial se estableció por medio de la técnica de inmunocitoquimica. Representan los dos primeros casos de esta variedad diagnosticados en Paraguay. los casos corresponden a dos pacientes, uno de sexo masculino y uno de sexo femenino con anemia, pancitopenia, sin hepato-esplenomegalia y con blastos en médula osea y sangre periférica que fueron estudiados por medio de un panel de anicuerpos monoclonales para identificar la serie celular a la que pertenecían. Se obtuvieron resultados negativos con los anticuerpos anti-linfoblastos "B" y "T", anti-mieloblastos y anti-monociticos, mientras que el resultado fué positivo con el anticuerpo anti-glicoproteina plaquetaria para identificar precursores megacariocíticos, estableciéndose el diagnóstico de leucemia aguda megacarioblastica variedad M-7