10.Objective:HPLC was used to determine the contents of glycyrrhizic acid,isoliquiritin and isoliquiritigenin in compound liquorice tablets quantitatively.
11.The determination method of ethylene chlorohydrin content by u sing FID chromatograph polyethylene glycol 20M chromatographic column was introd uced.
12.The paper chromatography-mottle elution chronometry is established which is a simple and convenient and accurate method of quantitatively determining L-leucine.
14.An investigation is also made on determining DMDAAC qualitatively by bromophenol blue test and quantitatively by tetraphenyl boron sodium precipitation reac...
15.Methods The PCT level of 52 children with the infectious diarrhea and 20 healthy children was measured by a semi-quantitative colloidal gold immunofiltration assay.
16.The results showed that the variation of the color display were not significantly corelated with the composition of the photopigments of their zooxanthella.
17.Researchers say the idea is to replace explosives in small hand grenades with a certain variety of red chilli to immobilise people without killingthem.
18.Superoxide dismutase(SOD) in eggs can inhibit the photoreduction of nitro-blue tetrazolium (NBT).Thisreaction can be used to quantitatively determine the enzyme activities of SOD.
19.Streak cathod method which is a kind of qualitative method for measuring the innerstress of deposits was introduced.A semi-quantitative calculating formula for the innerstress was given.
20.In this paper,methods for producing highbasis weight tracing paper and commonly adopted transparentizing agents are presented,and suggestions on producing high basis weight tracing paper are advanced.