Abstract Gravity affects colloidal dispersions via sedimentation and convection. We used dynamic light scattering (DLS) to quantify the mobility of nanoparticles on ground in microgravity. A DLS instrument was adapted withstand accelerations a drop tower, liquid handling set-up connected order stabilize temperature enable rapid cooling or heating. Light experiments were performed tower at ZARM ...

For a multi-component hydrocarbon mixture under supercritical conditions, especially for fuels injected into compression ignition engines, the mechanism transition of dominant mixing mode from evaporation to diffusion is not well established. In this paper, processes six-component fuel (13.16 mol% toluene, 13.81 n-decane, 22.30 n-dodecane, 24.60 n-tetradecane, 14.66 n-hexadecane and 11.47 n-oct...

two poly(oxyethylene) derivatives 1.10-bis(2'-benzoic acid)-1,4,7,1-tetradecane (l1) and 1,7-bis(2'-benzoic acid)-1,4,7-trioxaheptane (l2) were used as suitable ionophores for the preparation of potassium-selective pvc-membrane electrodes. the resulting electrodes based on l1 and l2 exhibit linear responses to the activity of k+ ions within the concentration ranges of 3.1´10-5 -2.7´10-2 m and 2...

The biological and organoleptic properties of Bulgarian yogurt are largely determined by the metabolic activity selected strains Lactobacillus delbrueckii ssp. bulgaricus. HS-SPME-GC-MS technique was used to analyze volatile compounds produced following strains: bulgaricus MG1, MG2, MG3 MG4, MG5 MG6, MG7 MG8. A study optimize conditions SPME performed. optimum extraction aromatic components obt...

In oredr to reduce costs and save time for the membrane manufacturing process, it is necessary to improve the quality of membranes by modeling usage. In this study, Flory Huggins model was used to predict quaternary-system containing polyether sulfone, N-Methyl-2-pyrrolidone, water and used alkanes as an additive. Due to the solubility parameters and molar alkane volumes, the interaction parame...