Results 1 to 10 of about 266,575 (326)
Grouping Normal Type Ia Supernovae by UV to Optical Color Differences [PDF]
, 2013 Observations of many SNe Ia with the UVOT instrument on the Swift satellite has revealed that there exists order to the differences in the UV-OPT colors of normal SNe.
Brown, Peter J. +4 more
core +3 more sources
Chemometrics-assisted spectrophotometry for simultaneous determination of sodium benzoate and citric acid in beverage products [PDF]
Pharmaciana, 2018 The development and validation of chemometrics-assisted spectrophotometry have been successfully performed for determination of sodium benzoate and citric acid that have overlapping of ultra violet absorption spectra. The study aimed to develop, validate,
Ganjar Wahyu Rahardian +3 more
doaj +1 more source
The high-field polar RX J1007.5-2017 [PDF]
, 2012 We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K. +4 more
core +2 more sources
Macedonian Journal of Chemistry and Chemical Engineering, 2017 A simple, rapid, and sensitive spectrophotometric method was developed for the simultaneous determination of butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) concentration in pharmaceutical preparations and chewing gums, without prior ...
Mahmure Özgür +2 more
doaj +1 more source
Quantitative determination of total flavonoids in Glycyrrhiza Glabra L. herbs
Фармация и фармакология (Пятигорск), 2023 Licorice herb (Glycyrrhiza glabra L.) is a promising herbal raw material, which can be comprehensively used to develop drugs with an anti-inflammatory action.The aim of the article was to development a quantitative determination method of total ...
O. A. Belova, V. A. Kurkin, M. V. Egorov
doaj +1 more source
Spectrophotometric investigation of the Fe(III)–disulphonated hydroquinone complex [PDF]
Journal of the Serbian Chemical Society, 2005 Iron(III) form an indigo-blue complex with the disulphonated product of hydroquinone (K2S2Hy) in acid media with an absorption maxima at 600 nm.
M. V. OBRADOVIC +3 more
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Two-micron spectrophotometry of the galaxy NGC 253 [PDF]
, 1979 A very strong Brackett-gamma hydrogen emission line, and the 2.3 micron CO stellar absorption feature were measured in NGC 253. The presence and strength of the CO feature indicates that late type giant stars produce most of the 2.2 micron continuum ...
Becklin, E. E. +3 more
core +1 more source
Jurnal Ilmu Pertanian Indonesia, 2009 Uric acid concentration could be determined by spectrophotometry method. Uric acid was oxidized into allatonin in the presence of uricase and calculated by measuring the decrease of uric acid absorbance at 293 nm.
Dyah Iswantini +3 more
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, 2008 Context: Optical interferometry is a powerful tool for observing the intensity structure and angular diameter of stars. When combined with spectroscopy and/or spectrophotometry, interferometry provides a powerful constraint for model stellar atmospheres.
Alekseeva +14 more
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Yankuang ceshi, 2019 BACKGROUND Polymerized silicic acid cannot be quantitatively complexed with molybdate in geological sample, therefore the silicon is determined by silicon-molybdenum blue colorimetric spectrophotometry.
DONG Xue-lin +3 more
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