Results 121 to 130 of about 217,951 (354)

Non-grey dimming events of KIC 8462852 from GTC spectrophotometry [PDF]

open access: yes, 2018
We report ground-based spectrophotometry of KIC 8462852, during its first dimming events since the end of the Kepler mission. The dimmings show a clear colour-signature, and are deeper in visual blue wavelengths than in red ones.
Alonso, R.   +3 more
core   +3 more sources

AQUA‐FINS: Advanced Quantitative Underwater Analysis by a Flexible Integrated Nitrate Sensor

open access: yesAdvanced Sensor Research, EarlyView.
This work presents a flexible, integrated sensor array for real‐time monitoring of nitrate, pH, and temperature in aquaculture. The sensors exhibit high sensitivity and selectivity, while a regression model improves nitrate detection accuracy in dynamic conditions. Successful field deployment of the sensor array highlights its potential for maintaining
Shah Zayed Riam   +6 more
wiley   +1 more source

New bright optical spectrophotometric standards: A-type stars from the STIS Next Generation Spectral Library [PDF]

open access: yes, 2015
Exoplanets have sparked interest in extremely high signal-to-noise ratio spectroscopic observations of very bright stars, in a regime where flux calibrators, in particular DA white dwarfs, are not available. We argue that A-type stars offer a useful alternative and reliable space-based spectrophotometry is now available for a number of bright ones in ...
arxiv   +1 more source

Multi-filter spectrophotometry simulations [PDF]

open access: yes
To complement both the multi-filter observations of quasar environments described in these proceedings, as well as the proposed UBC 2.7 m Liquid Mirror Telescope (LMT) redshift survey, we have initiated a program of simulated multi-filter ...
Callaghan, Kim A. S.   +2 more
core   +1 more source

Development of an analytical method to determine malondialdehyde as an oxidative marker in cryopreserved bovine semen [PDF]

open access: yes, 2015
Frozen sperm is widely used in artificial insemination of cattle as well as other animal species. As a consequence of the freezing and thawing processes of semen, an excess of reactive oxygen species (ROS) are formed.
Nazareno, Mónica Azucena   +3 more
core   +2 more sources

A Silk Fibroin Nanoparticle Hydrogel Loaded With NK1R Antagonist Has Synergistic Anti‐Inflammatory and Reparative Effects on Dry Eye Disease

open access: yesAdvanced Science, EarlyView.
This study develops a silk fibroin (SF) nanoparticles hydrogel targeting neurokinin 1 receptor with CP‐99994 (CP). Combining CP and SF to form stable nanoparticles while incorporating a flexible hydrogel material results in a sustained‐release ophthalmic drop formulation (SF@CP@Gel), which provides a long‐lasting ophthalmic formulation with anti ...
Bo Gong   +12 more
wiley   +1 more source

The Mechanism of Redox Reaction between Palladium(II) Complex Ions and Potassium Formate in Acidic Aqueous Solution

open access: yesArchives of Metallurgy and Materials, 2017
The kinetics studies of redox reaction between palladium(II) chloride complex ions and potassium formate in acidic aqueous solutions was investigated. It was shown, that the reduction reaction of Pd(II) is selective in respect to Pd(II) complex structure.
Wojnicki M., Podborska A.
doaj   +1 more source

Evaluation of Biologically Active Compounds from Calendula officinalis Flowers using Spectrophotometry

open access: yesChemistry Central Journal, 2012
BackgroundThis study aimed to quantify the active biological compounds in C. officinalis flowers. Based on the active principles and biological properties of marigolds flowers reported in the literature, we sought to obtain and characterize the molecular
Monica Butnariu, C. Coradini
semanticscholar   +1 more source

Optical and infrared spectrophotometry of 18 Markarian galaxies [PDF]

open access: yes, 1976
Slit spectra, spectrophotometric scans and infrared broad band observations are presented. Eight of the program galaxies can be classified as Seyfert galaxies.
Becklin, E. E.   +3 more
core   +1 more source

Noise analysis for CCD-based ultraviolet and visible spectrophotometry [PDF]

open access: yes, 2015
Full-text not yet available due to publisher embargo.We present the results of a detailed analysis of the noise behavior of two CCD spectrometers in common use, an AvaSpec-3648 CCD UV spectrometer and an Ocean Optics S2000 Vis spectrometer. Light sources
Davenport, John   +3 more
core   +1 more source

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