[Methods]QC 8000 continuous flow injector was used to determine urea according to the principle that urea combined with diacetyl monoxime and aminothiourea can produce red compound and has maximal absorption peak at he wavelength of 530nm.
The method for determination of patulin by HPLC the colum is YWGC18 and the mobile phase is acetonitile - water (20 + 80) DAD detecterand detection Wavelength was UV - 210nm and the flow rateis 1.0ml/min The liner range was 0 to 10ng (r= 0.999) and the minimum detection limt was 0.2mg The method was simple, sensitive and accurate.
The excretion ratio of Butylbenzyl Phthalate (BBP) in mice feces was detected by HPLC on the C_(18)-ODS chromatogram column with MeOH-H_2O (80:20) as the mobile phase at the flow rate of 0.8mL·min~(-1), the detection wavelength at 228nm, and the quantity by outer mark method.
The mobile phase consisted of 35% methanol and 65% 5 mmol/L ammonium acetate solution. The flow rate was 1.0ml/min. The spectro-photofluorimeter was set at wavelength of 450 nm for excitation and 520 nm for emission.
This method can overcome the flow problem in the maximum-entropy algorithm.
The desorption ratio will rise to more than 85% when the flow rate of this optimal eluant is one to two times that of resin volume per hour.
The main process parameters studied in this work were the voltage, the flow rate of the spinning fluid, the distance between the spinneret and the nanofiber collector and the temperature in the spinning chamber.
The influence of flow rate, particle size and shape on the flow profile of a colored band were studied on a 5-cm-long column and a scaled-up column of four fold in volume.
It was found that the flow rates of the mobile phase had little influence on the flat flow profile of the iodine band while the properties of the stationary phase had a certain influence on them.
A series of carbon-covered titania (CCT) were prepared via pyrolysis of sucrose highly dispersed on titania surface in flowing N2.
Nanocarbon-poly(methyl methacrylate) sols were prepared by pulsed laser ablation at the interface of target submerged in flowing liquid (PLA-IT/SFL) method, and the corresponding composite films were prepared by solution-casting.
Steam produced during the decomposition process accelerated the sintering of MgO, and MgO with surface area as high as 412 m2 · g-1 was obtained through calcining its precursor in flowing dry nitrogen at 520°C for 4 h.
Furthermore, air bubbles flowing out of the pump will hinder its application in areas such as medical treatment and health care where blood transfusion and infusion are concerned.
Organic fibre is in a flowing state and obviously generates drawing, shearing, carbonization and oxidization.
Characteristics difference method for incompressible miscible flow in porous media
Two-phase, incompressible miscible flow in prous media is governed by a system of nonlinear partial differential equations.
Two-phase, miscible, incompressible flow in porous media is governed by a system of nonlinear partial differential equations.
Some remarks about the area-preserving convex curve flow in the plane
Using Picard's theorem and the Leray-Schauder fixed point theorem to reinvestigate the area-preserving convex curve flow in the plane which is considered as a coupled system and thus different from the setting handled by Gage.