Results 61 to 70 of about 72,690 (163)

Fields of rational constants of cyclic factorizable derivations

Electronic Journal of Differential Equations, 2015
We describe all rational constants of a large family of four-variable cyclic factorizable derivations. Thus, we determine all rational first integrals of their corresponding systems of differential equations.
Janusz Zielinski
doaj  

Model compounds of humic acid and oxovanadium cations. Potentiometric titration and EPR spectroscopy studies

Journal of the Brazilian Chemical Society, 1999
The stability constants and the isotropic EPR parameters Ao (hyperfine splitting constant) and g o (g value) were obtained by potentiometric titrations and EPR spectroscopy, respectively, of 85%v/v aqueous solutions of model compounds of humic acids ...
Mercê Ana Lucia Ramalho, Spir Ivana Helena Zamuner, Oruña Salmón Maria José, Giannoni Ricardo Alberto, Mangrich Antonio Sálvio   +4 more
doaj  

Resorcinol-, catechol- and saligenin-based bronchodilating β2-agonists as inhibitors of human cholinesterase activity

Journal of Enzyme Inhibition and Medicinal Chemistry, 2017
We investigated the influence of bronchodilating β2-agonists on the activity of human acetylcholinesterase (AChE) and usual, atypical and fluoride-resistant butyrylcholinesterase (BChE). We determined the inhibition potency of racemate and enantiomers of
Anita Bosak, Anamarija Knežević, Ivana Gazić Smilović, Goran Šinko, Zrinka Kovarik   +4 more
doaj   +1 more source

An algorithm concerning one dimensional rings of constants in polynomial rings

, 2001
Contains fulltext : 18961_algocoond.pdf ( ) (Open Access)
Essen, Arno van den, Nowicki, Andrzej
openaire   +1 more source

Irreducible Jacobian derivations in positive characteristic

Open Mathematics, 2014
Jędrzejewicz Piotr
doaj   +1 more source

Positive characteristic analogs of closed polynomials

Open Mathematics, 2011
Jędrzejewicz Piotr
doaj   +1 more source

Analysis of 3-D printed meta-structure substrates for microstrip patch antenna design

Discover Sensors
Recent years have witnessed a shift in antenna design preferences, with polymer-based substrates over conventional PCB substrates. While prior studies have explored Poly-lactic acid (PLA) biocompatible substrates, limited attention has been given to the ...
Puja Rani, Balwinder Singh Dhaliwal, Amod Kumar   +2 more
doaj   +1 more source

One-element \(p\)-bases of rings of constants of derivations

, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

The kinetics of the reaction of 6-substituted nicotinic acids and some p-substituted benzoic acids with diazodiphenylmethane in various alcohols

Journal of the Serbian Chemical Society, 2000
Rate constants have been determined for the reactions of diazodiphenylmethane with a number of 6-substituted nicotinic acids and p-substituted benzoic acids in twelve alcohols. A comparative study was used to evaluate and compare the Hammett r values and
MILICA M. MISIC-VUKOVIC, BRATISLAV Z. JOVANOVIC, SASA Z. DRMANIC   +2 more
doaj  

Reactive MD Screening of Antioxidants for Substituent-Dependent Phenoxyl Radical Stability. [PDF]

ACS Omega
Ahmed S, Eder SJ, Iqbal MM, Dörr N, Martini A.   +4 more
europepmc   +1 more source