Abstract In the present work, a computational study (quantum chemistry composite method) of the thermodynamic properties of aspirin is performed, and the obtained results compared with those from literature. The calculated values for ΔcHm0 (s), ΔfHm0 (s), ΔfHm0 (l) and Δf Hm0 (g) (kJ mol-1), are -4035.35, -775.24, -755.96 and -649.56, respectively, in very good […]
The chemical constituents and pharmacological activities of Cymbopagon schoenanthus: A Review
Abstract The chemical analysis of Cymbopogon schoenanthus showed that it contained tannins, saponins, saponin glycosides, flavonoids, alkaloids, triterpens, balsams, cardiac glycosides, glycosides, steroids and volatile oils. The previous pharmacological effects of Cymbopogon schoenanthus showed that it exerted antioxidant, antimicrobial, anthelmintic, insecticidal, protective, acetylcholinesterase inhibitory activity and other pharmacological effects. This study was designed to highlight […]
Statistical Analysis of Biogas Production from Co-digestion of Cornstalk with Goat Dung using a One Factor Design
This study investigates biogas production from co-digestion of cornstalk with goat dung and its statistical analysis. Physicochemical analysis of substrate and digestate were also carried out as well as microbial count load analysis. Result shows highest experimental biogas yield of 4.7 × 10-2 m3, temperature of 38oC on 29th day. The predicted biogas yield by […]
Failure Analysis of Timber (Wood) in Constructional Work for Engineering Application (Afterglow Time and Oven Dry Densities of Some Tropical Timbers) EI Okoye, AN Eboatu
Timber is an essential raw material needed in constructing one thing or the other in all fields of human endevour. It is combustible. In this research, fire characteristics of fifty-seven (57) tropical timbers were investigated. The characteristics studied are: afterglow time (AGT) and oven dry density (ODD). The tropical timbers with the highest AGT and […]
Determination of Heavy Metals in Soil from Bokkos and Mangu Local Government Areas of Plateau State, Nigeria
This study was conducted at Bokkos and Mangu local government areas of plateau state, Nigeria. Soil sample at varying depth(0 – 10 cm, 10 – 20 cm and 20 – 30 cm)were analyzed for heavy metals. This is to ascertain the effect of leaching in heavy metals concentration at various soil depths and to understand […]
Hydrogen Sulfide Adsorption on Cobalt (II) and Chromium (III) Modified kaolinite
In this work it is reported the synthesis, characterization and hydrogen sulfide (H2S) adsorption of Co (II) and Cr (III) modified kaolinite. The modified matrices were prepared by cation exchange process. The pure and modified matrices were characterized by X-ray diffractometry, X-ray fluorescence, FTIR-spectroscopy and thermogravimetry. Based on X-ray florescence data, it was verified that […]
Investigating the Van Der Waals Equation “A” and “B” Parameters for Hydrocarbons (C1 to C24) by Computational Modelling
In the present work, it is performed a computational chemistry study involving hydrocarbons, from C1 (methane) to C24 (tetracosane), in order to correlatethe a and bparameters of van der Waals equationswith polarizability and molecular volume, as well another molecular parameters.The computations were performed usingSpartan´14 (version 1.1.8) by a Density Functional (DFT) method (B3LYP level, 6-31G* […]
Thermophilic Anaerobic Co-digestion of an Alkali Treated Musa sapientum Plant Waste (MSPW) and Cattle Dung for Biogas Production and its Statistical Analysis: a Case of One Factor Response Surface Methodology (RSM)
This study investigates thermophilic anaerobic Co-digestion of an alkali treated Musa sapientum plant waste (MSPW) and cattle dung for biogas production and its statistical analysis using a one factor response surface methodology (RSM). Proximate compositions of slurry and analysis of microbial count load were carried out with the aids to determine the potential use of […]
Chemical Composition and Biological Activity of Balansaea glaberrima Desf. and Lange, Leaf and Stem Essential Oils
The biological importance of Apiacea promoted us to investigate the leaves and stem of Balansaea glaberrima (endemic plant) previously not investigate. The study aimed to investigate the antimicrobial, antioxidant and chemical composition of the essential oils Results: The major components of the oils of B. glaberrima were found to be valencene, apiole and γ-murolene, representing […]
Comparative Study between Water Saturation Capacity (WSC) and Oven Dry Density (ODD) As Fire Characteristics of Some Tropical Timbers (ODD)
Timber is an essential raw material needed in constructing one thing or the other in all fields of human endevour. It is combustible. In this research, fire characteristics of fifty-seven (57) tropical timbers were investigated. The characteristics studied are: flame duration (FD) and oven dry density (ODD). The tropical timbers with the highest FD are […]