A new series of lipophilic cholesteryl derivatives of 2,4,6-trichloro-pyrimidine-5-carbaldehyde has been synthesized. Oxyethylene spacers of variable lengths were inserted between the hydrogen bonding promoting pyrimidine core and the cholesteryl tail in order to understand their effect on the self-assembly of these compounds. Only compound 1a with the shortest spacer formed a gel in organic so...

The affinity of weak polyelectrolyte coated oxide particles to the oil-water interface can be controlled by the degree of dissociation and the thickness of the weak polyelectrolyte layer. Thereby the oil in water (o/w) emulsification ability of the particles can be enabled. We selected the weak polyacid poly(methacrylic acid sodium salt) and the weak polybase poly(allylamine hydrochloride) for ...

These last years, aircraft manufacturers and environmental international bodies have set drastic targets concerning turbo-engines pollution consumption reduction. To reach the objectives of pollutant emission reductions, innovative solutions such as constant-volume combustion are in development. Characterizing propagation a kerosene-air flame this kind is necessary. Particularly, knowledge fund...

BACKGROUND (+)-Nootkatone (4) is a high added-value compound found in grapefruit juice. Allylic oxidation of the sesquiterpene (+)-valencene (1) provides an attractive route to this sought-after flavoring. So far, chemical methods to produce (+)-nootkatone (4) from (+)-valencene (1) involve unsafe toxic compounds, whereas several biotechnological approaches applied yield large amounts of undesi...

In dual-fuel (DF) engines, a high-reactivity fuel (HRF) ignites low-reactivity (LRF) premixed with air. Identification of the combustion mode after autoignition in DF engines different combinations and under various mixture stratification levels is crucial importance since may affect engine performance emissions levels. However, to avoid expensive computational or experimental tests for initial...