Results 11 to 20 of about 19,497 (181)

Identification of the Mixing Ratios of Beer-Mixed Beverages by UV/VIS Spectroscopy

open access: yesBeverages, 2023
UV/VIS spectroscopy was used in conjunction with a calibration method to determine the mixing ratio of samples of beer-mixed drinks with mineral water (sour Radler beers) from the food service industry.
Sophia Stinus   +3 more
doaj   +1 more source

Optical Properties of Light-Scattering Standards for CCD Photometry

open access: yesSensors, 2023
This paper analyzes the light-scattering standards currently used for calibration (verification) and systematic research in photo and spectrophotometry tools.
Denys Bondariev   +4 more
doaj   +1 more source

Overview of Gaia Multi-Color Photometry

open access: yesOpen Astronomy, 2003
Gaia will obtain multi-color photometry for astrometric and astrophysical purposes. A photometry in five broad bands and with high angular resolution will be obtained after every astrometric observation of a star, especially for the sake of correcting ...
Høg Erik
doaj   +1 more source

Search and study of the space debris and asteroids within ISON project [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2021
International Scientific Optical Network (ISON) is an open international voluntary project specializing in observations of the near-Earth space objects.
IGOR E. MOLOTOV   +23 more
doaj   +1 more source

NORAD TLE Type Orbit Determination of LEO Satellites Using GPS Navigation Solutions [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
NORAD Two Line Elements (TLE) are widely used for the increasing number of small satellite mission operations and analysis. However, due to the irregular periodicity of generation of the NORAD TLE, a new TLE that is independent of NORAD is required.
Chang-Hwa Cho   +4 more
doaj   +1 more source

Sobre a Dosagem Fotométrica do Cobre em Águas

open access: yesBrazilian Archives of Biology and Technology, 2001
The author presents an analytic process for copper quantitative determination in mineral and potable waters, based in the reaction of the cation copper with sodium diethyl-dithio carbamate. Due to the presence of certain elements common in water, such as
Reinaldo Spitzner
doaj   +1 more source

The colibri telescope array for KBO detection through serendipitous stellar occultations: A technical description

open access: yesFrontiers in Astronomy and Space Sciences, 2022
We present the technical design, construction and testing of the Colibri telescope array at Elginfield Observatory near London, Ontario, Canada. Three 50-cm telescopes are arranged in a triangular array and are separated by 110–160 m.
Michael J. Mazur   +8 more
doaj   +1 more source

Metabolic sensing in AgRP neurons integrates homeostatic state with dopamine signalling in the striatum

open access: yeseLife, 2022
Agouti-related peptide (AgRP) neurons increase motivation for food, however, whether metabolic sensing of homeostatic state in AgRP neurons potentiates motivation by interacting with dopamine reward systems is unexplored. As a model of impaired metabolic-
Alex Reichenbach   +17 more
doaj   +1 more source

Photometric Solutions of W UMa Type Stars: GSC2576-0319 and GSC2584-1731 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2006
High-precision photometric observations were performed in BVI bandpasses using 1m robotic telescope at Mt. Lemmon Observatory for two binary stars, which are reclassified as W UMa-type systems from ROTSE(Robotic Optical Transient Search Experiment ...
Chung-Uk Lee, Jae Woo Lee, Chun-Hwey Kim
doaj   +1 more source

INFLUENCE OF LASER BEAM PROFILE ON LIGHT SCATTERING BY HUMAN SKIN DURING PHOTOMETRY BY ELLIPSOIDAL REFLECTORS

open access: yesПриборы и методы измерений, 2018
The correct accounting of laser emitter parameters for improvement of diagnostic authenticity of methods of optical biomedical diagnostic is important problem for applied biophotonic tasks.
M. A. Bezuglyi   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy