Results 91 to 100 of about 456,086 (291)

Screening of wheat grains enriched with wall-bound phenolic compounds

MethodsX, 2023
Phenolic compounds are dominant antioxidant factors in whole grains and are essential quality traits in future breeding programs. We proposed a robust set of methods for extraction, screening, and quantitative analysis of soluble and wall-bound (WB ...
Yi-Lin Gong, Jin-Ying Gou
doaj  

Analysis of two SMC HII Regions Considering Thermal Inhomogeneities: Implications for the Determinations of Extragalactic Chemical Abundances [PDF]

, 2011
We present long slit spectrophotometry considering the presence of thermal inhomogeneities (t^2) of two HII regions in the Small Magellanic Cloud (SMC): NGC 456 and NGC 460. Physical conditions and chemical abundances were determined for three positions in NGC 456 and one position in NGC 460, first under the assumption of uniform temperature and then ...
arxiv   +1 more source

Stellar spectrophotometry in the far ultraviolet Final report, Jul. 1959 - Dec. 1963 [PDF]

Stellar spectrophotometry in vacuum ultraviolet - feasibility of ultraviolet spectrophotometric satellite, interference filter fabrication, vacuum calibration, and X-15 rocket ...
Code, A. D.
core   +1 more source

Determination of amlodipine in pharmaceutical dosage forms by liquid chromatography and ultraviolet spectrophotometry.

Journal of AOAC International, 2006
A liquid chromatography (LC) method and an ultraviolet (UV) spectrophotometric method were developed and validated for quantitative determination of amlodipine in tablets and compounded capsules. The isocratic LC analyses were performed on an RP18 column
M. D. Malesuik, S. G. Cardoso, Lisiane Bajerski, Fibele Analine Lanzanova   +3 more
semanticscholar   +1 more source

Voyager Ultraviolet Spectrometers calibration and the heliosphere neutrals composition: reassessment [PDF]

arXiv, 2016
The Voyagers (V) 1 and 2 Ultraviolet Spectrometers (UVS) data harvest covers outer planets encounters, heliosphere sky-background measurements, and stellar spectrophotometry. Because their operation period overlaps with many ultraviolet missions, the V1 and V2 UVS calibration with other spectrometers are invaluable.
arxiv  

NGC 2579 and the carbon and oxygen abundance gradients beyond the solar circle [PDF]

, 2013
We present deep echelle spectrophotometry of the Galactic HII region NGC 2579. The data have been taken with the Very Large Telescope Ultraviolet-Visual Echelle Spectrograph in the 3550--10400 \AA\ range. This object, which has been largely neglected, shows however a rather high surface brightness, a high ionization degree and is located at a ...
arxiv   +1 more source

Quantitative analysis of WC stars: Constraints on neon abundances from ISO/SWS spectroscopy [PDF]

, 2000
Neon abundances are derived in four Galactic WC stars -- gamma Vel (WR11, WC8+O7.5III), HD156385 (WR90, WC7), HD192103 (WR135, WC8), and WR146 (WC5+O8) - using mid-infrared fine structure lines obtained with ISO/SWS.
A. J. Willis, Abbott D. C., Barlow M. J., Becker S. R., Becker S. R., Becker S. R., Butler K., Cardelli J. A., Chapman J., Crowther P. A., Crowther P. A., Crowther P. A., D. John Hillier, de Graauw TH., de Jager C., De Marco O., Dougherty S. M., Dougherty S. M., Eenens P. R. J., Eenens P. R. J., Fernley J. A., Galavis M. E., Hillier D. J., Hillier D. J., Hillier D. J., Hillier D. J., Hillier D. J., Howarth I. D., Howarth I. D., Howarth I. D., K. A. van der Hucht, Kessler M., Koesterke L., L. Dessart, Langer N., Leitherer C., Lepine S., Lundstrom I., Luo D., Luo D., Massey P., Meynet G., Moffat A. F. J., Morris P. W., Morris P. W., Morris P. W., Niemela V., Nussbaumer H., Nussbaumer H., P. A. Crowther, P. W. Morris, Peach G., Prinja R. K., Saraph H. E., Saraph H. E., Schaerer D., Schaerer D., Schaller G., Schmutz W., Schmutz W., Seaton M. J., Smith L. F., St Louis N., Steenman H., Steenman H., Stevens I. R., Torres-Dodgen A. V., Torres-Dodgen A. V., Tully J. A., van der Hucht K. A., van der Hucht K. A., van der Hucht K. A., van der Hucht K. A., Willis A. J., Willis A. J., Wright A. E., Yu Yan, Yu Yan   +77 more
core   +2 more sources

Bias in C IV-based quasar black hole mass scaling relationships from reverberation mapped samples [PDF]

arXiv, 2015
The masses of the black holes powering quasars represent a fundamental parameter of active galaxies. Estimates of quasar black hole masses using single-epoch spectra are quite uncertain, and require quantitative improvement. We recently identified a correction for C IV $\lambda$1549-based scaling relationships used to estimate quasar black hole masses ...
arxiv  

An Atlas of Galaxy Spectral Energy Distributions from the Ultraviolet to the Mid-Infrared [PDF]

, 2013
We present an atlas of 129 spectral energy distributions for nearby galaxies, with wavelength coverage spanning from the UV to the mid-infrared. Our atlas spans a broad range of galaxy types, including ellipticals, spirals, merging galaxies, blue compact dwarfs and luminous infrared galaxies.
arxiv   +1 more source

Zinc - 1,10-phenanthroline complexes and their analytical application [PDF]

, 1951
The use of ultraviolet spectrophotometry for quantitative inorganic analytical purposes has long remained unexploited. An extremely large number of complexes of metals have characteristic absorption properties in the visible portion of the spectrum and ...
Banks, C. V., McClure, John Hibbert
core   +2 more sources