Search results for "Ionización."

showing 3 items of 3 documents

Periodic Table of the Elements, History, Education and Evaluation

2021

The periodic tables of transition metal thiophosphates MPS3, transition metal dichalcogenides MX2 and other materials, the origin of chemical elements and toxic trace elements in dried mushrooms are provided. The effective nucleus-electron attraction is proportional to the effective nuclear charge (Zeff) and inversely proportional to the effective principal quantum number (n*). The periodic arch is one of many modern visual displays that have been developed to augment the traditional periodic table of the chemical elements. The table is related to the multiparameter optimisation of N atom, nuclear magnetic resonance and everyday life. Educational activities were developed and evaluated. Se …

PhysicsTrace (linear algebra)Periodic tableTable (information)Effective nuclear chargeIonizaciónlaw.inventionAtomic radiusPeriodic tablelawQuantum mechanicsAtomPrincipal quantum number23 QuímicaTabla periódicaIonization energyIonisationNereis. Interdisciplinary Ibero-American Journal of Methods, Modelling and Simulation.
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Influence of Chemical Enhancers and Iontophoresis on the In Vitro Transdermal Permeation of Propranolol: Evaluation by Dermatopharmacokinetics

2018

[EN] The aims of this study were to assess, in vitro, the possibility of administering propranolol transdermally and to evaluate the usefulness of the dermatopharmacokinetic (DPK) method in assessing the transport of drugs through stratum corneum, using propranolol as a model compound. Four chemical enhancers (decenoic and oleic acid, laurocapram, and R-(+)-limonene) and iontophoresis at two current densities, 0.25 and 0.5 mA/cm(2) were tested. R-(+)-limonene, and iontophoresis at 0.5 mA/cm(2) were proven to be the most efficient in increasing propranolol transdermal flux, both doubled the original propranolol transdermal flux. Iontophoresis was demonstrated to be superior than the chemical…

Drugdermatopharmacokineticsmedia_common.quotation_subjectChemical enhancerslcsh:RS1-441Pharmaceutical SciencePropanol - Uso terapéutico.02 engineering and technologyPropranololMedicamentos - Administración.030226 pharmacology & pharmacyArticlelcsh:Pharmacy and materia medicaIonización.03 medical and health sciences0302 clinical medicineIonization.medicineStratum corneumpropranololDermatopharmacokineticsTransdermalmedia_commonchemical enhancersChromatographytransdermal administrationIontophoresisChemistryLaurocapramTransdermal administrationIontophoresisDrugs - Administration.Skin absorption.iontophoresisPermeation021001 nanoscience & nanotechnologyPropranololPropanol - Therapeutic use.In vitromedicine.anatomical_structurePropanol - Pharmacokinetics.Propanol - Farmacocinética.Absorción cutánea.0210 nano-technologymedicine.drugPharmaceutics
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Shedding light on dark matter through 21 cm cosmology and reionization constraints

2021

Durante las últimas décadas, nuestra comprensión del universo ha alcanzado un nivel remarcable, pudiendo probar predicciones cosmológicas con una precisión asombrosa. Las observaciones de los fotones del Fondo Cósmico de Microondas, junto con los estudios de catálogos galaxias, nos proporcionan una comprensión profunda de la geometría, los componentes y la cronología del cosmos. No obstante, la naturaleza de la Materia Oscura aún se desconoce. La composición, masa e interacciones de las partículas de Materia Oscura presentan uno de los enigmas más intrigantes de la cosmología actual. En esta tesis doctoral se estudian diferentes candidatos a Materia Oscura que pueden dejar un impacto en el …

cosmología:FÍSICA [UNESCO]materia oscuraUNESCO::FÍSICAUNESCO::ASTRONOMÍA Y ASTROFÍSICAreionización:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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