Results 61 to 70 of about 140,762 (162)

Evaluation of the Ability of PAMPA Membranes to Emulate Biological Processes through the Abraham Solvation Parameter Model

open access: yesMembranes, 2023
Two parallel artificial membrane permeability assay (PAMPA) systems intended for emulating skin permeability have been characterized through the solvation parameter model of Abraham using multilinear regression analysis.
Sara Soriano-Meseguer   +3 more
doaj   +1 more source

Fast and Efficient Monitoring of Diclofenac Dissolution Profile by CE [PDF]

open access: yes, 2014
Capillary electrophoresis (CE) was used to follow Diclofenac tablet dissolution, in very short times and allowing dissolution testing without volume replacement. By using Student´s t test and F-test, this CE method was compared with HPLC.
Delfino, Mario Raul   +3 more
core   +1 more source

Multivalent Protein Nanorings for Broad and Potent SARS‐CoV‐2 Neutralization

open access: yesAdvanced Healthcare Materials, Volume 15, Issue 10, 13 March 2026.
A protein‐only, modular multivalent nanoscaffold displaying 20 anchor points, decorated with two different binders (10 of each), targeting the SARS‐CoV‐2 receptor‐binding domain is presented. The construct self‐assembles into stable, biocompatible, homogeneous nanoparticles, exhibit synergistic binding with fM IC50 values. It also detects spike at 9 ng 
Molood Behbahanipour   +11 more
wiley   +1 more source

Els Fonaments canviants de la química analítica [PDF]

open access: yes, 1985
The features of the physico-chemical background of analytical chemistry, as it was viewed during the first half of this century, is first described. The impact of the massive introduction of instrumentation and separation techniques is discussed, and the
Casassas i Simó, Enric
core  

Rational Design of Optical Single‐Walled Carbon Nanotube‐Based Nanosensors with Biological Recognition Elements

open access: yesAdvanced Sensor Research, Volume 5, Issue 3, March 2026.
This Review focuses on assessing and providing perspective on the field of rationally‐designed optical sensors constructed with single‐walled carbon nanotubes. The literature is reviewed and evaluated for SWCNT‐based sensors constructed with biomolecular recognition elements, including proteins, peptides, and oligonucleotides, as well as their methods ...
Amelia K. Ryan   +4 more
wiley   +1 more source

Synthesis, characterization and thermal behaviour of solid state compounds of 4-methoxybenzoate with Manganese, Nickel and Copper

open access: yesEclética Química, 2018
Solid state M-L compounds, where M stands for bivalent Mn, Ni, Cu and L is 4-methoxybenzoate, have been synthesized. Simultaneous thermogravimetry – differential thermal analysis (TG-DTA), X-ray powder diffractometry, infrared spectroscopy, elemental ...
E. C. Rodrigues   +4 more
doaj   +1 more source

Paper-Based Working Electrodes Coated with Mercury or Bismuth Films for Heavy Metals Determination

open access: yesBiosensors, 2020
Paper-based carbon working electrodes were modified with mercury or bismuth films for the determination of trace metals in aqueous solutions. Both modification procedures were optimized in terms of selectivity and sensitivity for the determination of ...
Alberto Sánchez-Calvo   +2 more
doaj   +1 more source

Construção de conhecimento na disciplina de química analítica qualitativa : a teoria da atividade como recurso didático [PDF]

open access: yes, 2013
O presente trabalho objetivou investigar a construção do conhecimento na disciplina de Química Analítica Qualitativa (QAQ). Uma Atividade Orientadora de Ensino (AOE) foi desenvolvida com estudantes do curso de graduação em Licenciatura em Química ...
de Abreu, Daniela Gonçalves   +2 more
core   +2 more sources

Inhibitory Effects of Grape Stem Extracts From Douro Varieties on Skin‐Aging Enzymes: A Sustainable Source of Cosmeceutical Agents

open access: yesJournal of Cosmetic Dermatology, Volume 25, Issue 3, March 2026.
ABSTRACT Background Grape stems are a major by‐product of the winemaking process and remain largely underexploited despite their richness in bioactive phenolic compounds, representing an opportunity for sustainable valorization within a circular economy framework.
Maria Garcia‐Marti   +4 more
wiley   +1 more source

Photoelectrocatalytical degradation of basic blue 41 dye using nanoporous semiconductor of Ti/TiO2

open access: yesEclética Química, 2018
The present work investigates the photoelectrocatalytical degradation Basic Blue 41 (BB 41) largely applied to dye synthetic fibers, using a semiconductor Ti/TiO2 as photoanode. 100% of degradation of 8.33 10-5 mol L-1 dye in 0.1 mol L−1 Na2SO4, pH 2 was
Luciano Evangelista Fraga   +1 more
doaj   +1 more source

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