The pulsating yellow supergiant V810 Centauri [PDF]
The F8Ia supergiant V810 Centauri is part of a long-term high-precision photometric monitoring program on long period variables started twenty years ago. Time series analysis of this unique set of 500 data points, spanning almost fifteen years in the homogeneous Geneva photometric system, is presented.
arxiv
Determination of Hesperidin in Dry Matter of Citrus Tissues by Ultraviolet Spectrophotometry Method [PDF]
R. Gören, S. P. Monselise
openalex +1 more source
In the present study, silver nanoparticles were synthesized using Erythrina abyssinica aerial parts as both reducing and capping agents. Three extracts were obtained from the plant using methanol, acetone and water.
Netai Mukaratirwa-Muchanyereyi+4 more
doaj
The ultraviolet excess of quasars 3: The highly polarized quasars PKS 0736+017 and PKS 1510-089 [PDF]
Ultraviolet/optical/infrared spectrophotometry of the highly-polarized quasars (HPQ's) PKS 0736+017 and PKS 1510-089 is analyzed. A blazar continuum component like that in BL Lac objects (e.g.
Malkan, M. A., Moore, R. L.
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Optimasi Metode Penetapan Ranitidin Dalam Plasma Manusia Secara in Vitro Dengan Metode Spektrofotometri Ultraviolet-visibel [PDF]
Research of determination ranitidine plasma concentration in vitro has been done. This research aimed to analysis ranitidine in human plasma in vitro with Ultraviolet-Visible spectrophotometry and to get result that optimal of analysis method in human ...
Masyitoh, N. A. (Nur)+2 more
core
The Angular Diameter and Fundamental Parameters of Sirius A
The Sydney University Stellar Interferometer (SUSI) has been used to make a new determination of the angular diameter of Sirius A. The observations were made at an effective wavelength of 694.1 nm and the new value for the limb-darkened angular diameter ...
Davis, J.+5 more
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Ultraviolet Spectrophotometry of Phenothiazine Derivatives and Analogs
Abstract Ultraviolet spectral data have been tabulated for 41 phenothiazine derivatives and analogs. The general appearance of the spectra is caused by the structure of the tricyclic π-system, whereas spectral shift effects are produced by R2 substituents.
openaire +3 more sources
Studies of hot B subdwarfs. Part 2: Energy distributions of three bright sdB/sdOB stars in the 950-5500 angstrom range [PDF]
Voyager ultraviolet spectrometer observations of the subdwarf B or OB stars HD 205805, UV 1758+36 and Feige 66 are presented. All three objects display the H I Layman series in absorption.
Fontaine, G.+4 more
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Quantitative Determination of Benzaldehyde in Flavors and Cordials by Ultraviolet Spectrophotometry, 2,4-Dinitrophenylhydrazine Precipitation, and the Official AOAC Procedure [PDF]
Richard L Brunelle
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Detection of the polyphenolic components in[i] Ribes nigrum[/i] L.
Background. The blackcurrant ([i]Ribes nigrum [/i]L.) is a species of native currant which contains a lot of polyphenolic antioxidants which is used medicinally and has a fundamental role in the maintenance health.
Monica BUTNARIU
doaj