Results 31 to 40 of about 1,586,812 (316)

Trends of Initial Orbit Determination Accuracy for Time Interval Change Between Three Pairs of Measurement Datas [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
Gauss and Laplace methods for initial orbit determination (IOD) are classical orbit determination tools and have been used very efficiently in optical satellite surveillance system.
Okjun Hwang, Jung Hyun Jo
doaj   +1 more source

How practice determines method and method determines practice

open access: yesQualitative Market Research: An International Journal, 2009
The well-determined process of theoretical research has influenced the development of real-life practices and the execution of strategies. However, less well developed is our understanding of how real-life practices influence the way that research methods should and might be developed and conducted. What can researchers developing methodological design
A. Lindgreen, Martin Hingley
openaire   +2 more sources

Determination of serum cortisol by isotope-dilution liquid-chromatography electrospray ionization tandem mass spectrometry with on-line extraction [PDF]

open access: yes, 2001
A liquid chromatographic-mass spectrometric method for the determination of cortisol in serum using atmospheric pressure electrospray ionization and tandem mass spectrometry is described.
Briegel, Josef   +2 more
core   +1 more source

On issue of clarifying the method for determining the ecologically permissible application rate of organic fertilizer

open access: yesМелиорация и гидротехника
Purpose: to clarify the method for determining the ecologically permissible application rate of sewage sludge (hereinafter referred to as SWS) or fertilizers made from them using mathematical tools. Materials and methods.
Svetlana A. Manzhina, Lev I. Rusin
doaj   +1 more source

Analytical application of the reaction system phenyl fluorone-hydrogen peroxide for the kinetic determination of cobalt and tin traces by spectrophotometry in ammonia buffer media [PDF]

open access: yesHemijska Industrija, 2013
The present paper describes two new, simple, rapid, selective and sensitive kinetic spectrophotometric methods for Co(II) and Sn(II) determination in solution at room temperature, based on their effect on phenyl fluorone (PF) oxidation by ...
Rančić Sofija M.   +2 more
doaj   +1 more source

Rapid method for the determination of cation-exchange capacity of calcareous and non-calcareous soils [PDF]

open access: yes, 1964
?Compulsive? exchange takes place between a barium-soil and magnesium sulphate solution because Ba2+ ions are removed from solution by precipitation of barium sulphate.
Bascomb, C. L.
core   +1 more source

THE DETERMINATION OF ZIRCONIUM BY THE PHOSPHATE METHOD. [PDF]

open access: yesJournal of the American Chemical Society, 1919
n ...
Lundell, G. E. F., Knowles, H. B.
openaire   +1 more source

IPLOT-VKA: an Integral-method Powell-pLOT-enhanced Visual Kinetic Analysis for the determination of orders of reaction [PDF]

open access: yes, 2023
Determination of partial orders in kinetics is a general entry step for any mechanistic investigation; recently, considerable attention has been given to the benefits of using visual methods to help in this task, such as easy utilization and data ...
Alessandro, Landi, Guglielmo, Monaco
core   +1 more source

Research on a method for determining the reference values of icing tension on overhead transmission lines

open access: yesZhejiang dianli
Icing tension monitoring technology is widely used for online monitoring of transmission lines in China. However, due to environmental factors such as rain, snow, and strong winds, improper setting of reference values for icing tension can lead to false ...
WANG Shaohua   +6 more
doaj   +1 more source

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