Results 61 to 70 of about 5,893 (200)

The Interface Region Imaging Spectrograph (IRIS) [PDF]

open access: yes, 2014
The Interface Region Imaging Spectrograph (IRIS) small explorer spacecraft provides simultaneous spectra and images of the photosphere, chromosphere, transition region, and corona with 0.33-0.4 arcsec spatial resolution, 2 s temporal resolution and 1 km ...
Akin, D. J.   +87 more
core   +2 more sources

Équilibres de phases en chromatographie micellaire. Corrélation LSER de la constante d'équilibre micelle-eau [PDF]

open access: yesJournal de Physique IV (Proceedings), 2004
Micellar liquid chromatography allows to determine micelle-water equilibrum constant K MW . Capacity factors of fifty solutes of various polarities are measured using cationic and anionic micellar mobilephase and a C 18 silica column. The solvatochromic parameters of the solutes are used to establish a convenient LSER (linear solvation equation ...
S. Guermouche, M. H. Guermouche
openaire   +1 more source

Comparison of Classical and Green RPLC Methods in the Determination of pKa Values of Some Piperazine Group Antihistamines

open access: yesChemistry – A European Journal, Volume 30, Issue 34, June 17, 2024.
In this study, the environmentally friendly green RPLC method was used as an alternative to classical RPLC methods in the determination of the pKa values of some antihistamines of the piperazine group and compared with the data obtained with other methods.
İkbal Demet Nane   +2 more
wiley   +1 more source

Hinode Calibration for Precise Image Co-alignment between SOT and XRT (November 2006 -- April 2007)

open access: yes, 2007
To understand the physical mechanisms for activity and heating in the solar atmosphere, the magnetic coupling from the photosphere to the corona is an important piece of information from the Hinode observations, and therefore precise positional alignment
DeLuca, Edward E.   +13 more
core   +1 more source

In Silico Acute Aquatic Hazard Assessment and Prioritization Using a Grouped Target Site Model: A Case Study of Organic Substances Reported in Permian Basin Hydraulic Fracturing Operations

open access: yesEnvironmental Toxicology and Chemistry, Volume 43, Issue 5, Page 1161-1172, May 2024.
Abstract Hydraulic fracturing (HF) is commonly used to enhance onshore recovery of oil and gas during production. This process involves the use of a variety of chemicals to support the physical extraction of oil and gas, maintain appropriate conditions downhole (e.g., redox conditions, pH), and limit microbial growth. The diversity of chemicals used in
Kathleen S. Boone   +4 more
wiley   +1 more source

Solvatochromism studies on UV spectra of 4,5-disubstituted-1,2,4-triazoline-3-thiones

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2012
The influence of a series of organic solvents on the UV spectra of investigated 1,2,4-triazoles, was studied by implementing solvatochromic theory.
Vesna B. Dimova   +1 more
doaj   +1 more source

Supermassive Black Holes and Their Host Galaxies - II. The correlation with near-infrared luminosity revisited

open access: yes, 2013
We present an investigation of the scaling relations between Supermassive Black Hole (SMBH) masses (Mbh), and their host galaxies' K-band bulge (Lbul) and total (Ltot) luminosities. The wide-field WIRCam imager at the Canada-France-Hawaii-Telescope (CFHT)
Ferrarese, Laura   +3 more
core   +3 more sources

Лінійні залежності енергій сольватації (LSER) для кількісної характеристики та порівняння міцелярних хроматографічних систем [PDF]

open access: yes, 2010
Лінійні залежності енергій сольватації (LSER) використано для моделювання утримування ряду бензодіазепінів та β-блокаторів за даними міцелярної рідинної хроматографії.
Бойченко, О.П.   +3 more
core  

The 2010 August 01 type II burst: A CME-CME Interaction, and its radio and white-light manifestations

open access: yes, 2012
We present observational results of a type II burst associated with a CME-CME interaction observed in the radio and white-light wavelength range. We applied radio direction-finding techniques to observations from the STEREO and Wind spacecraft, the ...
Claire L. Raftery   +18 more
core   +1 more source

Survey of Connectivity Restoration in 3D Wireless Ad Hoc/Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, Volume 2024, Issue 1, 2024.
Wireless ad hoc/sensor networks (WASN) have seen increased application in three‐dimensional (3D) environments, such as underwater and aerial scenarios. However, WASN may be fragmented or unable to connect continuously due to the harsh surrounding environment or high mobility.
Hongsheng Chen   +5 more
wiley   +1 more source

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