Results 21 to 30 of about 71,535 (264)

STABILIZATION OF COEFFICIENTS FOR PARTITION POLYNOMIALS

open access: yes, 2014
See the abstract in the attached ...
Robert P. Boyer, William J. Keith
openaire   +4 more sources

A Method for Predicting Efficiency of Perforated Muzzle Brakes [PDF]

open access: yesProblemy Mechatroniki, 2021
This paper presents a method for predicting a value of a gasdynamic efficiency coefficient for perforated muzzle brakes. The method is based on the interior ballistics modelling for determining gasdynamic flow parameters at the brake inlet and 2D ...
Marta CZYŻEWSKA, Radosław TRĘBIŃSKI
doaj   +1 more source

The Influence of Database Characteristics on the Internal Consistency of Predictive Models of Trace Element Partitioning for Clinopyroxene, Garnet, and Amphibole

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Understanding the processes that produce the major and trace element signature of igneous materials requires quantitative models of the behavior of trace elements under the full range of natural conditions. Such predictive models are based on the results
Erica W. Cung   +3 more
doaj   +1 more source

“Click” synthesis of amphiphilic carbohydrate-alkyl triazole derivatives

open access: yesResults in Chemistry, 2022
1,4-disubstituted 1H-1,2,3-triazole with a hydrophobic and hydrophilic moiety were synthesized by using Cu(I) catalyzed alkyne-azide 1,3-dipolar cycloaddition reaction.
Mario Daniel Contin   +2 more
doaj   +1 more source

Application of ATPSs Based on Thermosensitive Copolymer in Partitioning and Determination of Ciprofloxacin in a Milk Sample [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
Phase behavior of copolymer-salt aqueous two-phase systems contaning PEG-PPG copolymer (L35 Pluronic) (Mw=1900) and five salts (potassium diphosphate, magnesium sulfate, potassium citrate, disodium tartrate and monosodium phosphate) have been studied ...
Sara Bahmanzade   +4 more
doaj   +1 more source

A novel validated gas chromatography flame ionization detector method for measuring methanol and ethanol in blood samples using a solvent partitioning extraction technique [PDF]

open access: yesZagazig Journal of Forensic Medicine and Toxicology
Background: The measurement of blood alcohol levels is a routine analysis carried out in many forensic laboratories. Headspace and Solid-Phase Micro-Extraction techniques coupled with Gas Chromatography have emerged as the method of choice for alcohol ...
Mohamed Abdelaziz
doaj   +1 more source

Extraction of Bovine Serum Albumin by Aqueous Two-Phase System Using PEG4000/Sodium Citrate and PEG8000/Sodium Phosphate

open access: yesAl-Khawarizmi Engineering Journal, 2023
Aqueous Two Phase System (ATPS) or liquid-liquid extraction is used in biotechnology to recover valuable compounds from raw sources. In Aqueous Two-Phase Systems, many factors influence the Partition coefficient, K, (which is the ratio of protein ...
Hawraa A. Mahdi   +2 more
doaj   +1 more source

Partition Coefficients of Indoles and Betacarbolines

open access: yesJournal of Pharmaceutical Sciences, 1997
Partition coefficients for substituted indoles and betacarbolines were determined in octan-1-ol/water and cyclohexane/water. A comparative study of the results in both systems allows us to discuss the effects played by the different molecular structures, substituents, and aromaticity on the distribution properties of these compounds. In particular, the
Guardado, P   +4 more
openaire   +4 more sources

2D quantum gravity at three loops: A counterterm investigation

open access: yesNuclear Physics B, 2016
We analyze the divergences of the three-loop partition function at fixed area in 2D quantum gravity. Considering the Liouville action in the Kähler formalism, we extract the coefficient of the leading divergence ∼AΛ2(ln⁡AΛ2)2.
Lætitia Leduc, Adel Bilal
doaj   +1 more source

Experimental and numerical studies on heat transfer and ventilation characteristics in a factory with high heat-generating machinery

open access: yesCase Studies in Thermal Engineering
This study conducts experimental and numerical studies on natural convection and ventilation characteristics in a factory with high heat-generating machinery. It also selects a turbulence flow model suitable for the factory.
Han-Taw Chen   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy