Results 61 to 70 of about 1,312 (193)

LSER in the reaction between p -nitrobenzyl bromide and 2-mercaptobenzoxazole

Journal of Chemical Research, 2006
The reaction between p-nitrobenzyl bromide and 2-mercaptobenzoxazole has been studied by following the conductance of the reaction mixture at different time intervals. The reaction is overall second order, being first order with respect to both [nucleophile] and [substrate].
Sudala Ranga Reddy, Pandrangi Kalyani, Prerepa Manikyamba   +2 more
openaire   +1 more source

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

Chemistry – 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, Ebru Çubuk Demiralay, Y. Doğan Daldal   +2 more
wiley   +1 more source

Correlation study of retention data and antimalarial activity of 1,2,4,5-mixed tetraoxanes with their molecular structure descriptors and LSER parameters [PDF]

Journal of Pharmaceutical and Biomedical Analysis, 2014
The chromatographic behavior of mixed 1,2,4,5-tetraoxanes, cholic and deoxycholic acid derivatives with distinct biological activity, was examined by high-performance thin-layer chromatography in order to correlate their structure and retention. Chromatographic systems were consisted of RP-18 or CN-silica as stationary phase, and binary mixtures of ...
Šegan, Sandra, Terzić Jovanović, Nataša, Milojković-Opsenica, Dušanka, Trifković, Jelena, Šolaja, Bogdan, Opsenica, Dejan   +5 more
openaire   +5 more sources

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

Environmental 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, Dominic M. Di Toro, Craig W. Davis, Thomas F. Parkerton, Aaron Redman   +4 more
wiley   +1 more source

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

Macedonian 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, Nada U. Perišić-Janjić   +1 more
doaj   +1 more source

Modeling headspace solid-phase microextraction of volatile organic compounds from water samples with porous coatings using finite element analysis

Advances in Sample Preparation, 2022
This research was aimed at the development of the COMSOL Multiphysics® (CMP) model for simulating the headspace (HS) solid-phase microextraction (SPME) of volatile organic compounds (VOCs) from water using Carboxen/polydimethylsiloxane coating at 25 °C ...
Aset Muratuly, Anel Kapar, Bulat Kenessov   +2 more
doaj   +1 more source

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

International 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, Chunhui Wu, Mou Wu, Bin Xu, Ping Fan, Luca Reggiani   +5 more
wiley   +1 more source

LSER characterization of amine functional stationary phases

, 1996
The linear solvation energy relationship is one of the various methods used to characterize gas chromatographic stationary phases. An analysis of retention data yields a quantitative relationship between the solute and stationary phase and an increased ...
McCann, Melissa M.
core   +1 more source

Linear Solvation Energy Relationship (Lser) in the Allylation of 2-Mercapto-1-Methylimidazole

Progress in Reaction Kinetics and Mechanism, 2009
The affect of 16 different protic and aprotic solvents on the rate of reaction between allyl bromide and 2-mercapto-1-methylimidazole has been studied. Correlation of the rate constants with different solvent parameters indicates that the polarity, polarisability, electrophilicity and hydrogen bond donor ability of the solvent simultaneously influence
Dharanipragada Vijayabharathi, Prerepa Manikyamba   +1 more
openaire   +1 more source

A new linear solvation energy relationship for the solubility of liquids in water

, 2019
From a comparison between the linear solvation energy relationship (LSER) and the extended solubility parameter model, it has been found that the solute-solute interaction energy term is missing in the LSER equation.
Lee, SB
core   +1 more source