Electrode contact impedance is a crucial factor in physiological measurements and can be an accuracy-limiting factor when performing electroencephalography and electrical impedance tomography. In this work, standard flat electrodes and micromachined multipoint spiked electrodes are characterized with a finite-element method electromagnetic solver and the dependence of the contact impedance on g...

in this study, the effect of mentha piperita essence (mpe) incorporation into cassava films on the hydrophilic and physicochemical properties of the resulting biodegradable films was investigated. the properties included solubility, moisture uptake and contact angle. mpe was added into biodegradable films at different amounts (1, 2 and 3%, w/w total solid). all biofilms were plasticized with 40...

Cationic polymeric nanoparticles have great potential for developing drug delivery systemswith limited side effects for tumor medication. The goal of this research is investigation ofcationic dextran-spermine polymer (DS) efficacy for improvement of hydrophilic drug deliveryto negatively charged cancerous cells. Capecitabine (as a hydrophilic antineoplastic drug) wasloaded into the magnetic dex...

objective eudragits are widely used polymers in the production of oral sustained release dosage forms. the application of these polymers in the production of inert insoluble matrices has been investigated. however the effect of particle size, compaction force and presence of aerosil 200 as a glidant on the properties of eudragit rs and rl matrices prepared by direct compression of their physica...

The aim of this research was to: (1) develop a reliable extraction procedure and assay to determine antioxidant activity in meat products, and (2) assess the effect of beef finishing system (forage-finished: alfalfa, pearl millet or mixed pastures vs. concentrate-finished) on longissimus muscle antioxidant activity. The effect of extraction method (ethanol concentration and extraction time), pr...

A two-dimensional chromatographic method with mass spectrometric detection has been developed for identification of small, hydrophilic angiotensin I-inhibiting peptides in enzymatically hydrolysed milk proteins. The method involves the further separation of the poorly retained hydrophilic fraction from a standard C(18) reversed-phase column on a hydrophilic interaction liquid chromatography (HI...

We investigate the interactions between lipid bilayers and amphiphilic peptides using a solvent-free coarse-grained simulation technique. In our model, each lipid is represented by one hydrophilic and three hydrophobic beads. The amphiphilic peptide is modeled as a hydrophobic-hydrophilic cylinder with hydrophilic caps. We find that with increasing peptide-lipid attraction the preferred state o...