A series of five 8-azacoumarin derivatives bearing aryl moieties at C-5 and C-7 designed and synthesised by a concise procedure utilising grinding and ultrasound approaches. The multi-component protocols proceeded smoothly in the absence of solvent to furnish the target products...
Open access
Research Article10.9734/IRJPAC/2018/44129
In this paper, laboratory pots experiment was conducted to assessing the absorption and accumulation potential of the native grass species, Cyperus rotundus. Viable seed of the grass were seeded into soil (2.0 kg) amended with different concentrations of the metals, Zn, Pb, Cd an...
Open access
Research Article10.9734/IRJPAC/2018/44604
The purpose of this study is the investigation of the effect of morphological structure, temperature and solvent on the association thermodynamic of some copper salts using conductometric measurements. The conductivity data have been analyzed by Shedlowsky equation to determine i...
Open access
Research Article10.9734/IRJPAC/2018/44420
In textile industries effluents we can be found surfactants of various characteristics, alkalis, and sulfides partially or totally hydrolyzed dyes, among other things, which are used as dyeing material. This study aims to create an unconventional tool to evaluate the degree of en...
Open access
Research Article10.9734/IRJPAC/2017/36636
The purpose of this research was to study the influence of post-synthetic treatment of a granular mordenite of a high degree of crystallinity with a hierarchical porous structure in water vapour medium and aqueous solutions of citric acid. The conditions providing the increase o...
Open access
Research Article10.9734/IRJPAC/2018/43923
Five methods were developed for simultaneous determination of spiramycin adipate and oxytetracycline-HCl and/or tetracycline-HCl in their pharmaceutical formulations. The first one was a densitometric evaluation of thin-layer chromatograms using a mobile phase of methanol: Butano...
Open access
Research Article10.9734/IRJPAC/2018/44345
The strengths of H-X bond (Sb) of lithium, sodium, beryllium, magnesium, calcium, carbon, silicon, nitrogen, phosphorus, arsenic, oxygen and sulfur were calculated with use of equation ∆aΨogas/cond = Σ ∆atomΨogas/cond - ∆fΨogas/cond = Σ Sb gas/cond, in which were included the...
Open access
Research Article10.9734/IRJPAC/2018/42779
This work aims at conversion of mill scale to produce value-added pigment grade red iron oxide by multi-step process, such as milling, acid treatment, mixing with redox reagents and calcination. In all steel re-rolling industries, mill scale is a solid waste material produced as...
Open access
Research Article10.9734/IRJPAC/2018/42935
Silican oxide (SiO2) is the most abundant oxide present on the surface of the earth which has a wide spectrum of technological applications due to it's various chemical and physical properties. The topological index is a numerical representation of a molecular structure. The firs...
Open access
Research Article10.9734/IRJPAC/2018/42645
Toxic compounds are frequently found in discharges (industrial and domestic effluents) with very variable biodegradability. Among those that are feared for the ecosystem are phenols. Phenol and its derivatives are considered by the Environmental Protection Agency as important pol...
Open access
Research Article10.9734/IRJPAC/2018/42413