Abstract This \ork. is aimed at developing solid base catalysts from locally sourced materials and applying them to an environmentally beneficial reactive distillation process for transesterification of vegetable oils with methanol into biodiesel. Solid base catalysts include calcium oxides (prepared from the calcinations of poultry eggshell, limestone, chalk clay and marble stone). By investigating these processed solid base catalysts samples catalytic behaviors in the transesterificat...
ABSTRACT Water of good quality is indispensable to human survival on earth. The provision of potable water to both the rural and the urban populations is necessary to prevent health hazards. The aim of this research was to assess water quality with respect to physicochemical parameters and trace metals levels in the water, the sediment and the fish species from the Kpong Reservoir on the Lower Volta River. The water, the sediment and the fish samples were collected monthly for six (6) months ...
ABSTRACT The isolation and characterization of starch from Parkia biglobosa Oacq.)Benth. (African locust bean), was investigated. The starch was extracted by a pre- isolation bleaching using KOH (5%) and sodium hypochlorite (3 .5% ); followed by steeping, wet milling and centrifugation. The starch obtained was dried in an oven at 60°C. The thermal properties were obtained by Differential Scanning Calorimetry (DSC). The work showed that Parkia starch has a pH of 5.6,density (true) 2.3lg/ml, ...
ABSTRACT The investigations of Cissampe/os owariensis have largely been driven by the desire to find new drugs or new drug leads. The studies were carried out to confirm the traditional medicinal uses of the plant C. owariensis, and to identify the chemical constituents responsible for the activity. The ethnomedicinal uses of the plant include whooping cough, wound, irregular menstrual cycle, typhoid and malaria fevers. Phytochemical screening of the roots extracts revealed the presence of...
ABSTRACT The total concentration of Cd, Co, Cu, Mn, Ni, Pb and Zn were detemlined in the soil and plant materials from some selected local government areas of Nassarawa state, Nigeria. The modified USEPA- 3050 method of HNOr HCI04 - H202 was used in the preparation of soil sample for total deternlination whilst the plant materials were digested with HN03 -H202. The CaCh. DTPA extraction method was used in the determination of the concentration of bio available metals in soil samples. The fla...
ABSTRACT The impact of the effluents from the Transcorp Hilton Hotel on the quality of the Maitama Stream, Abuja was studied. Samples were collected from points upstream (control samples), the effiuent discharge point and points downstream (a total of eight points) and analyzed as follows: Electrochemical methods of determination were used in the determination of pH and dissolved oxygen content whilst classical methods of analysis were used in the determination of total alkalinity and chlori...
ABSTRACT The concentrations of Pb, Cu, Zn, Ni and Cd in agricultural soils and vegetation of Kwali Area Council were determined by flame atomic absorption spectrophotometry. The HN03 -HCI04-HF mixture was used for the digestion of soil samples for metal determination, while HNOTHCI04 was used for metals determination in vegetation. The coefficient of variation for Pb, Cu, Zn, Ni and ....... Cd in soil were 4.0%, 4.8%, 3.2%, 3.9% and 4.3% while in vegetation were 7.0%, 4.8% 5.4%, 6.9%...
Abstract Buruli ulcer (BU) is a bacterial infectious disease of the subcutaneous fat caused by Mycobacterium ulcerans, resulting in chronic, devastating, necrotizing consequences. M. ulcerans produces a polyketide-derived macrolide toxin called mycolactone, required for the organism’s virulence. The disease manifests initially as a painless pre-ulcerative subcutaneous nodule, a plaque or as a rapidly progressing oedema. The oedema, the severe form breaks down to form characteristic ulcers w...
ABSTRACT Five different filling stations (Station A, Station B, Station C, Station D and Station E) were analyzed for Total Petroleum Hydrocarbons and heavy metals concentration using Gas chromatography–mass spectrometry and atomic absorption spectrophotometer respectively. The result of the analysis obtained indicated that the percentage range of Total Petroleum Hydrocarbons (TPH) in soil is from 0.8061-34.3103%, respectively. Furthermore, the percentage range of underground water are from...
ABSTRACT The determination of some selected organochlorine pesticide residues in some vegetables grown within Gwagwalada Area Council were carried out using Gas Chromatography-Mass Spectrometric Technique (GC/MS). Lindane, Dieldrin, Endosulfan and Heptachlor were determined in Telfairia occidentalis, Amaranthus hybridus and Talinum triangulare obtained from some locations within Gwgwalada Area Council between the months of May and June, 2015. The pesticides were extracted by the method o...
ABSTRACT The electronic and vibrational absorption spectra of some N - substituted anilides and sulphonanilides have been studied. The different bands observed have been assigned to the proper electronic and vibrational transitions respectively. The solvent dependence of n - n* and n- n* transitions in these compounds was investigated by studying their UV spectra in pure organic solvents of different polarities. The longest wavelength band displayed by the anilides and the sulphonanilide i...
ABSTRACT The persistent prevalence of Counterfeit and substandard drugs poses a clear and present danger globally. Its higher degree of occurrence and under-reporting in developing nations especially in Africa and Asia is of great concern. Antibiotics are amongst the most used and abused in developing countries and as such, the need for its constant surveillance cannot be over emphasised. This study involved the assessment of the quality of three commonly used therapeutic groups of antibioti...
ABSTRACT The reactions of 2-chloro-5-nitro pyridine with piperidine have been studied in acetone and in methanol In acetone, the rate constants are measured as a function of the amine concentration.
INTRODUCTION B—Diketones participate in tautomeric equilibria where an apparently pure compound is actually a mixture 'of two or three substances having keto and enol structures
INTRODUCTION B-Diketones participate in tautomeric equilibria where an apparently pure compound is actually a mixture 'of two or three substances having keto and enol structures.