The chromatographic behavior of petanin, petunidin-3-O-[6-O-(4-O-(E)-para-coumaroyl-O-α-rhamnopyranosyl)-β-glucopyranoside]-5-O-β-glucopyranoside, is studied for the first time under conditions of reversed-phase high performance liquid chromatography in mobile phases with different pH values. The relationship …

Using the reversed phase high performance liquid chromatography with diode-array and massspectrometric (in ESI mode) detection, a composition of Catharanthus roseum petals was established. After the acid hydrolysis, all five anthocyanidins were found to be different comparing to the ordinary anthocyanidins …

Voor het meten van elektrochemische processen van micro- tot nanoschaal wordt een techniek ontwikkeld die elektrochemische impedantiemetingen met een AFM naald mogelijk maken. Hierbij bevindt zich actief materiaal op een AFM naald en worden er metingen verricht in elektrolyt. Tijdens dit onderzoek …

Een grote overeenkomst in symptomatologie tussen de bipolaire- (BS) en borderline persoonlijkheidsstoornis (BPS) vormt een probleem in zowel de diagnostiek als de behandeling van deze stoornissen. Een betere differentiaaldiagnostiek is dus gewenst. Dit onderzoek richt zich op de emotieregulatie, wat …

With sufficient electrical energy CO2 from the atmosphere, combined with water, can be converted to hydrocarbons. The first step in converting CO2 into a carbon based fuel is the dissociation of CO2 into CO and O. DIFFER explores the possibilities of this process by using a microwave plasma. This project …

Patients suffering from bacterial bloodstream infections have an increased risk of developing systematic inflammatory response syndrome (SIRS), which can result in rapid deterioration of the patients’ health. Diagnostic methods for bacterial identification and antimicrobial susceptibility tests are time-consuming. …

Abstract A setup is designed and constructed to perform specular reectance spectroscopy on an enzymatic reaction, while simultaneously monitoring the heat produced by the reaction using a FLIR camera. The spectrum of ethanol was recorded using two MCT detectors and showed clear overlap with literature …

Raman spectroscopy is an optical technique that is based on the inelastic scattering of light. It is non-invasive, fast, objective and easy to use. These traits make it an ideal tool for use in medical diagnosis. Melanoma is the deadliest form of skin cancer. Currently, melanomas are visually diagnosed …

Reversed-phase HPLC with mass spectrometric and diode array detection as well as some literature data were used to reveal the individual types of solutes in anthocyanin complexes of tulip flower petals that are responsible for tulip flower petals coloration of the samples available in the local flower …

Cyanobacteriochromen (CBCR) zijn fytochroom-gerelateerde fotoreceptor eiwitten, die van eiwitstructuur veranderen wanneer deze belicht worden met bepaalde kleuren licht. Tijdens deze foto-conversie transformeren de CBCRs van de ene stabiele staat naar de andere, via het doorlopen van verschillende tussenproducten. …