Results 261 to 270 of about 927,095 (308)
Some of the next articles are maybe not open access.
Basicity of nitropyrazoles and their simultaneous spectrophotometric determination
Talanta, 1975The protonation constants of some 1-, 3(5)-, 3-, 4- and 5-nitropyrazoles have been determined, and compared with those of nitroimidazoles. The effect of the position of the nitro group in the pyrazole and imidazole ring is discussed. The ortho effects of the nitro group in pyrazole and imidazole are compared and found to have identical values.
D, Dumanović +3 more
openaire +2 more sources
Radioimmunoassay for the simultaneous determination of morphine and codeine
European Journal of Pharmacology, 1976Antiserum against morphine was produced in rabbits immunized with morphine hapten conjugated to bovine serum albumin. The carrier protein was conjugated to the nitrogen atom of the opiate alkaloid in order to make the phenolic hydroxy group on C3 and the alcoholic group on C6 as determinant groups.
A R, Gintzler, E, Mohacsi, S, Spector
openaire +2 more sources
Simultaneous amperometric determination of nickel and copper
Talanta, 1975A method is described for the amperometric titration of nickel and successive amperometric determination of copper and nickel. Nickel (1.0-16.0 mg) and copper (1.0-11.0 mg) could be determined with an average error of less than 1%. Cobalt interferes but chloride does not. Interference by aluminium, iron(III) and chromium can be eliminated.
Y K, Reddy, S B, Rao, N A, Raju
openaire +2 more sources
Simultaneous determination of protein structure and dynamics
Nature, 2005We present a protocol for the experimental determination of ensembles of protein conformations that represent simultaneously the native structure and its associated dynamics. The procedure combines the strengths of nuclear magnetic resonance spectroscopy--for obtaining experimental information at the atomic level about the structural and dynamical ...
Lindorff-Larsen, Kresten +4 more
openaire +3 more sources
Simultaneous orbit determination
26th Aerospace Sciences Meeting, 1988Simultaneous orbit determination is demonstrated using live range and Doppler data for the NASA/Goddard tracking configuration defined by the White Sands Ground Terminal (WSGT), the Tracking and Data Relay Satellite (TDRS), and the Earth Radiation Budget Satellite (ERBS).
openaire +1 more source
Simultaneous determination of meperidine and normeperidine in biofluids
Journal of Chromatography A, 1976A method employing solvent extraction and gas-liquid chromatography has been developed for the simultaneous determination of meperidine and its N-demethylated metabolite, normeperidine, in biofluids. Normeperidine is analyzed as the heptafluorobutyryl derivative.
H H, Szeto, C E, Inturrisi
openaire +2 more sources
Simultaneous Determination of Argon and Nitrogen
Groundwater, 1995Abstract Denitrification can be confirmed by the presence of excess N 2 as indicated by measurement of argon and nitrogen. Previously reported Ar/N 2 ratios in ground water have been measured by static gas mass spectrometry, quadrupole
Glen E. Martin +3 more
openaire +1 more source
Simultaneous Determination of Oxalate and Carbonate
Analytical Letters, 1987Abstract A procedure for simultaneous measurements of carbonate and oxalate contents in nonaqueous samples is presented. It is based on determination of the lead ion concentration by d.c. polarography. The determination of oxalate and carbonate is possible in the range of 0.1 mM up to 10 mM.
Alfredo J. Zara +1 more
openaire +1 more source
The simultaneous determination of all zeros of a polynomial
Computing, 1990A class of adaptive iterative methods of higher order for the simultaneous determination of all zeros of a polynomial is constructed. These methods preserve their order of convergence also in the case of multiple roots. Numerical examples are included.
openaire +1 more source
Simultaneous determination of propranolol and pindolol by synchronous spectrofluorimetry
Talanta, 1998The simultaneous determination of propranolol and pindolol using synchronous fluorescence spectrometric techniques is described. The method involves measuring the natural fluorescence of these drugs in a 50% (v/v) ethanol-water medium using zero and first derivative synchronous spectrofluorimetry.
T, Pérez Ruiz +3 more
openaire +2 more sources