preparative technological parameters are mixing time ≥60min, temperature of the working roller 100～110℃, temperature of the idle roller 140～150℃, distance of the two rollers 1.5～2.5 mm, warm-up time 4～5 min, combining batch time≥45 min;
The effect of various technical factors on extracting cresol from waste water by castor fatty acid were researched. The result proved that optimum conditions are temperature, 40±2℃, ratio of water to oil, 10:1, mixed time, 10 min.
In order to determine the optimal mixed time of horixontal mixer, a trail was carried. In 4,5, 6, 7, and 8 minter of mixed time, 10 samples was taken, Fe content was determined separately by eolorimetry and coefficient of variation (CV) was calculated.
The correlation equations of mixing times were obtained. For the combination impellers 45SPU+45SPD+DT, AAAA or ABAB baffle, larger sparger and moderate sparger, the correlation equation of mixing times was expressed as following: For the combination impellers 45SPU+45SPD+WT, AAAA or ABAB baffle, larger sparger and moderate sparger, the correlation equation of mixing times was following:
Velocity and concentration field in agitated tank with single layer axial agitator blade were calculated by means of CFD software FLUENT 6.0,and the influences of feeding and detecting positions on mixing times were discussing.
Through the agitation characteristics test by the means of concentration determination, we get the stirring characteristic curve and the relation between the rotational speed and the incorporation time.
Near the critical point of half-filling, at which mixing to a homogeneous state does not occur, the reciprocal of the characteristic mixing time is proportional to δ2 ln(|δ|-1), where δ is the deviation of the fill level from half-filling.
Near this critical point, the inverse characteristic mixing time is proportional to δ2 ln(|δ|-1), where δ is the deviation from the half-fill level.
Variables associated with the chemical wastewater composition, mixing time, and the coagulant and flocculant dose are considered in order to appreciate the process efficiency in terms of turbidity, chemical oxygen demand (COD), and color removal.
NOESY spectra show no cross-peaks even at very long mixing time (500 ms).
Mixing time of a non-Newtonian liquid in an unbaffled agitated vessel with an eccentric propeller
In an attempt to standardize the procedure, the effects of various conditions for partial DNA denaturation using HCl, as well as of BrdUrd concentration and incorporation time on flow cytometry DNA / BrdUrd content analysis have been studied.
With extending of the incorporation time the radioactivity was localized mainly in growing tips of the hyphae.
The analysis by thin layer chromatography indicated the existence of 3H-uridine and 3H-UDPG in the axonal fraction of TCA-soluble compounds still after an incorporation time of 8d.
Radioactive labelled putrescine, spermine, and uridine were injected intraabdominally into house flies (Musca domestica), and the distribution of radioactivity in the ovaries was autoradiographically determined after 1 and 3 hrs incorporation time.
Observations by SEM revealed that the incorporation time was closely related to the interfacial reactions.