Abstract The fire assay technique is the oldest and most reliable method used to determine gold karat, because of the destruction of gold into pieces and the long time which spent at analyzing; a well powerful for nondestructive analytical analyzer had took it place, it is x-ray fluorescence spectroscopy (XRF) that we used to analysis gold specimens. It is fast and accuracy technique, XRF can provide qualitative and quantitative analysis regarding the thickness of the tested material by meas...
ABSTRACT Plant samples collected within and around Federal University Oye-Ekiti was air dried, pulverized and subjected to hot (soxhlet) extraction and cold extraction using three (3) extractive solvent (ethyl acetate, methanol, n-hexane).' The extracts were seperated from the solvent using rotary evaporator while the crude extracts were subjected to thin layer chromatography (TLC) using different solvent ratio mixtures on a silica gel coated TLC plates. The antibacterial activity of act...
Abstract GC-MS technique was used for determination of chemical constituents of the doum fruit extract. Doum fruits Powder was analyzed by an X-ray fluorescence to determine the major available elemental constituents. The results of GC-MS analysis showed presence of (34) chemical components. The main constituents were Tris(hydroxymethyl) nitromethane (27.67%), 3-omethyl- D-glucose (15.33%), 5-Hydroxymethylfurfural (7.49%), dl-Glyceraldehde dimer (4.19%)and Maltol (3.24%). XRFanalysis indicat...
Abstract Network security is becoming more crucial as the volume of data being exchanged on the internet. A more practical way to protect information is to alter it so that only an authorized receiver can understand it. Security of data and telecommunication can be done by a technique called cryptography. In this thesis Data Encryption Standard algorithm has been improved. Improved algorithm uses input data 512bit and key of 256bit length to encrypt the data. It uses S-boxes similar to those...
Abstract In the present study , the fixed oil of Citrullus Colocynthis was extracted from seeds . The oil was analyzed by gas chromatography – mass spectrometry (GC-MS) and 41 components were identified and quantified. Major constituents were :9,12 –octadecanoic acid methyl ester (39.30%),hexadecanoic acid methyl ester (15.82%),methyl stearate (13,39%)and 9-octadecanoic acid methyl ester (12.51%). Theoil was screened for antibacterial and antifungal activities and different antimicrobial ...
Abstract This study was conducted to determine the effect of the addition of 5 and 10 % levels of groundnut and sesame flour on nutritional quality and sensory properties of bread. Proximate analyses including moisture, fat, protein, ash and fiber contents were carried out for wheat flour, groundnut flour, sesame flour and bread. Microbiological safety, physical and energy for bread were also carried out. The results obtained showed significant difference (P
ABSTRACT Recently, Wireless Mesh Network (WMN) has gained important roles in current communication technologies. It has been used in several applications and most of them are critical applications such as surveillance, transportation systems and rescue systems. Hence, the WMN attracts a lot of attention from many researchers. WMN consists mainly of mesh clients MCs and mesh routers MRs, some of the latter are supplied by additional functions to serve as Internet gateways (IGs). Thus, most of...
Abstract This study was conducted to analyze the components of the plastic materials used in water and drug bottles by using laser induced breakdown spectroscopy (LIBS). Bottle samples were collected from some factories in Sudan, the samples were collected pre- and post-used. Samples were irradiated by Nd: YAG laser at 266 nm, repetition rate 2Hz, with pulse energy of 80mJ. The recorded spectra of the samples were analyzed using National Institute Standard and Technology (NIST) and Origin L...
ABSTRACT The aim of this study was to investigate the possibility of removing acids from Sudanese heavy crude oil which is characterized by acid number more than 7 mg KOH/g by liquid-liquid extraction technique. In this work polar organic solvents (methanol and ethanol) was used. The processes were applied at different temperatures and organic solvents volumes. The optimum solvent, solvent ratio and temperature were determined. The physical and chemical properties of crude oil sample were te...
Abstract The oil from Coffea Arabica was analyzed by GC-MS.The analysis showed 22 components. The major components are: Hexadecanoic acid, methyl ester (31.84%), 9,12- Octadecadienoic acid (Z,Z)-, methyl ester (%31.46), 9-Octadecanoic acid methyl ester (17.40%), Methyl stearate (10.84%), Eicosanoic acid methyl ester (5.04%). Antimicrobial activity of Coffea Arabica oil was conducted. The oil showed significant activity against Bacillus subtilis, moderate activity against Staphylococcus aureu...
ABSTRACT Medicinal plants have been used for centuries as remedies for human diseases because they contain components of therapeutic value. Phyllanthus amarus has shown to work as an antifungal, antibacterial and antiviral agent. Bioautography is a technique used to isolate compounds by employing a suitable chromatographic process followed by a biological detection system. Referenced pure culture antibiotics resistant Coagulase Negative Staphylococcus strain (Co NS I Ob: Ojo) and Staphyl...
ABSTRACT Many methods are used to securely transfer data, but the greatest challenge is to be careful of being detected by the intended recipient. The most famous methods are encryption and steganography. Encryption method draws the attention of third parties, but Steganography is a method to hide data inside a carrier such as Image, Audio, Video and Text without drawing any suspicion. In this thesis, the data transfer as a text medium and in more accurate HTML file was used. This method is...
Abstract The effect of different solvents on Zinc Oxide based Dye Sensitized Solar Cells (DSSC) with Nile Blue were studied. The performance of solar cells with on (FTO/ ZnO/ Blue Nile dye /FTO+ graphite and Iodine ) structures were investigated. under the effect of different solvents, which on (Methanol ,Ethanol ,Acton , Chloroform and Benzene ). Absorption and energy gap were found using UV-VS mini 1240 spectrophotometer and light current-voltage characteristics and XRD. The five (FTO/ ZnO...
Abstract Moringa oleifera Lam. tree grows in many tropical and subtropical countries. The seed, leaves, root and flowers of M. oleifera are often used in traditional medicine, while the immature pods, leaves and seed are used as nutrition products in human food. This study carried out proximate analysis for mineral elements assessment in dried M. oleifera leaves. Fresh leaves of M. oleifera lam were plucked from M. oleifera trees in River Nile State (Atbara Town). Analyzed for the mineral el...
ABSTRACT Human papilloma virus (HPV) infections are the most common sexually transmitted infections(STDs) in the world. This study was to document the prevalence. of Human papilloma virus infection in Federal university Oye-Ekiti, Ekiti State, Nigeria. Urine samples were collected from ninety four participants and were screened for HPV (lgM) antibody using the HPV ELISA. Out of 94 samples analysed, 2 (2.1 %) was positive for Human papilloma virus IgM, and higher prevalence were recorded i...