Results 21 to 30 of about 127,969 (344)
Photometric Determination of Phospholipase A [PDF]
Clinical Chemistry and Laboratory Medicine, 1986 A photometric method for the determination of phospholipase A is described, in which fatty acids are liberated from phosphatidylcholine and measured by a discontinuous enzymatic test. Optimal test conditions were evaluated using purified phospholipase A from human and porcine pancreas.
Hoffmann, G. +3 more
openaire +4 more sources
Variations of the Ratio of Total-To-selective Extinction in the Galaxy
Open Astronomy, 2003 The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
doaj +1 more source
Sensors, 2020 A microfluidic sensor was studied for the photometric detection of active chlorine, total chlorine, and pH in swimming pool samples. The sensor consisted of a four-layer borosilicate glass chip, containing a microchannel network and a 2.2 mm path length,
Sait Elmas +6 more
doaj +1 more source
The MUCHFUSS photometric campaign [PDF]
Astronomy & Astrophysics, 2018 Hot subdwarfs (sdO/Bs) are the helium-burning cores of red giants, which have lost almost all of their hydrogen envelope. This mass loss is often triggered by common envelope interactions with close stellar or even substellar companions. Cool companions like late-type stars or brown dwarfs are detectable via characteristic light-curve variations like ...
Stephan Geier +6 more
openaire +4 more sources
Combining Aperture and PSF-Fitting Photometry
Open Astronomy, 2003 The multiple object and multiple frame (MOMF) CCD photometry package, that combines the advantages of aperture and PSF photometry is described. Results from comparisons with other programs are given; no other photometry package was found to give better ...
Handler G.
doaj +1 more source
Photometric calibration methods for wide-field photometric surveys
SCIENTIA SINICA Physica, Mechanica & Astronomica, 2022 Uniform and accurate photometric calibration plays an important role in the current and next-generation wide-field imaging surveys. Herein, we review the modern photometric calibration methods, including the classic standard star method, "hardware/observation-driven" methods (such as the Ubercalibration, Hypercalibration, and Forward Global Calibration
Huang, Bowen, Xiao, Kai, Yuan, Haibo
openaire +2 more sources
Avocado: Photometric Classification of Astronomical Transients with Gaussian Process Augmentation [PDF]
Astronomical Journal, 2019 Upcoming astronomical surveys such as the Large Synoptic Survey Telescope (LSST) will rely on photometric classification to identify the majority of the transients and variables that they discover.
Kyle Boone
semanticscholar +1 more source
On the Accuracy of Gaia Photometry
Open Astronomy, 2003 The errors of Gaia photometry originating from tolerancies of the light filter mean wavelengths and half-widths are investigated.
Abromavičius G. +3 more
doaj +1 more source
ASTROIMAGEJ: IMAGE PROCESSING AND PHOTOMETRIC EXTRACTION FOR ULTRA-PRECISE ASTRONOMICAL LIGHT CURVES [PDF]
, 2016 ImageJ is a graphical user interface (GUI) driven, public domain, Java-based, software package for general image processing traditionally used mainly in life sciences fields.
K. Collins +3 more
semanticscholar +1 more source
Surface Rotation and Photometric Activity for Kepler Targets. I. M and K Main-sequence Stars [PDF]
Astrophysical Journal Supplement Series, 2019 Brightness variations due to dark spots on the stellar surface encode information about stellar surface rotation and magnetic activity. In this work, we analyze the Kepler long-cadence data of 26,521 main-sequence stars of spectral types M and K in order
A. R. G. Santos +7 more
semanticscholar +1 more source