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Zero-nonzero and real-nonreal sign determination
(Elsevier, 2013-09-25)
We consider first the zero–nonzero determination problem, which consists in determining the list of zero–nonzero conditions realized by a finite list of polynomials on a finite set Z⊂Ck with C an algebraic closed field. ...
Simultaneous determination of iron and ruthenium as ternary complexes by extractive second derivative spectrophotometry
(Elsevier, 1999)
A highly sensitive and selective second derivative spectrophotometric method has been developed for the determination of ruthenium and iron in mixtures. The method is based on the formation of the binary complexes of iron ...
Polarographic behaviour and determination of nitrofurantoin, chloramphenicol and related compounds
(1984)
The polarographic behaviour of nitrofurantoin and chloramphenicol have been studied in pyridine - formic acid buffer and tetramethylammonium chloride solution at pH 4.3. The E<inf>1/2</inf> versus pH and iym ...
ZETA DETERMINANT AND OPERATOR DETERMINANTS
(OSAKA JOURNAL OF MATHEMATICS, 2011)
We apply techniques of zeta functions and regularized products theory to study the zeta determinant of a class of abstract operators with compact resolvent, and in particular the relation with other spectral functions.
Validation of Simultaneous Volumetric and HPLC Methods for the Determination of Pridinol Mesylate in Raw Material
(Hindawi Publishing Corporation, 2013-10)
Simple, sensitive, and economical simultaneous volumetric and HPLC methods for the determination of pridinol mesylate in raw material have been developed. The volumetric method is based on the reaction of pridinol with ...
Determination of cinnamic acid in human urine by differential-pulse polarography
(Royal Soc Chemistry, 1996-02-01)
The differential pulse polarographic behaviour of cinnamic acid was studied in acetate and phosphate buffer solutions (pH 3.5-7.5). The reduction mechanism is discussed. The drug can be determined at pH 5.0 over the ...
Direct Determination of Phosphite in Fertilizers by Amperometric Titration
(Amer Chemical Soc, 2009-01-28)
Amperometric titration using two Pt microelectrodes for the determination of phosphite in fertilizers based on the oxidation of analyte by iodine is proposed. The influence of pH, buffer composition, temperature, and foreign ...