Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

PATTERN OF SPEECH AND LANGUAGE DISORDERS IN UNIVERSITY COLLEGE HOSPITAL IBADAN

ABSTRACT 188 patients referred for speech therapy at U.C.H. Ibadan were analysed for types of speech pathology. Having ascertained the Eer, Nose and Throat' conditions of the patients and with no significant medical indications, patients were promptly refered for Speech/Language assessment and therapy. The incidence of Speech/Language , impairment was found to be.higher in children (0-10 years) while delayed speech was found to be more prevalent. The import of public education on torms., caus...

Overpressure/ Depositional Analysis of Parts of Onshore (X-Field) Niger Delta Basin Nigeria, Based on Well Logs Data

ABSTRACT Overpressure in the world’s sedimentary basins are known to be allied with permeability barriers, tectonics, shale digenesis, basin structure and undercompaction factors. The Niger Delta basin has many overpressured zones with different depositional enviroments. This study was done using six drilled wells log suits in an x- field (Gama ray log, deep induction log, Density log, and sonic log). The data was acquired from Cheveron Nigeria Ltd in ascii softcopy format, which was analys...

A laboratory study of the effects of porosityand bed tilting on the discharge rate of groundwater

Abstract : The study of movement of underground water helps to predict the extent of flow in as much as we can determine the volume rate among other things. Sand samples from river bed were used as porous media. a laboratory experiment was set lip to Iook at longitudutinal dispersion III term of volume of liquid flowing across a unit cross sectional area per unit time in these materials. Water was made to flow through a cylindrical pipe drilled sideways at intervals. Values of pressure were ...

Groundwater Contaminated by Nitrates—A Case Study of Ado-Ekiti, Ekiti State, Southwestern Nigeria

Abstract: Nitrate is one of the problematic and wide spread contaminations. Indiscriminate disposition of human and animal wastes in Nigeria especially in urban region, and lack of proper environmental sanitation geared the need for the monitoring of groundwater contamination. This research work monitored the concentration of nitrate and nitrate-nitrogen in portable water from wells in Odo Ado, Ado-Ekiti, Ekiti State, and examined the relationship between this concentration and the well dept...

Effect of Silicon Content and Shake-Out Time on Hardness and Grain Size Properties of GL 250 Cast Iron

ABSTRACT The properties of cast iron grade GL 250 are dependent on the microstructures developed during casting. These microstructures are in turn dependent on the composition of the alloy, type of mould and other numerous casting practice variables such as shake-out time, pouring temperature, mould ambient conditions and inoculating technique. In this work, the effect of silicon content and shake-out time on the grain size (GS) and hardness properties of GL 250 cast iron was studied using a...

A Linearized thermometer Circuit Employing a Thermistor and a Diode as Probing Elements

ABSTRACT The development of a linearized thermistor-based thermometer circuit with a thermistor and a diode as the temperature probing elements is here reported. The circuit is effectively that of an op amp based logarithmic amplifier, which takes its input from another inverting op amp circuit having a thermistor in its feedback loop. The performance of the circuit is demonstrated experimentally and has been found to have a linearity error of less than 0.2%. The accuracy analysis of the circ...

Interaction of Multiwalled Carbon Nanotube Produces Structural Alteration of DNA

ABSTRACT Multiwalled carbon nanotube (MWCNT) has been found to produce structural changes in Calf Thymus-DNA (CT-DNA). The interaction or binding of the multi-walled carbon nanotubes (MWCNT) was investigated in order to discover if it brings about any significant changes of the DNA double helix using CD spectra of the CT-DNA at two concentration levels of MWCNT representing an increasing MWCNT/DNA molar ratio. In addition, spectrophotometric titrations between MWCNT and CTDNA were carried ou...

Morphometrics of Macrotermes bellicosus (African mound termite) (Blattodea:Termitidae) and the Impact of its Saliva Amylase on the Strength of Termitarium Soil

Abstract The aim of this study was to investigate the morphology of Macrotermes bellicosus present on some parts of the University of Ibadan and to determine the effect of the saliva of termites on the strength of termitarium. Termites were collected from 8 termitaria on Parry Road, University of Ibadan and characteristics morphometrics were measured using stage graticules (10mm) on Microscope. Amylase analysis was conducted to determine the activity of the saliva content in the termitarium ...

Development of Extruded Complementary Foods from Blends of Acha . land Cowpea Flours

ABSTRACT Despite the fact that a variety of improved traditional African complementary foods have been developed from cereal-legume blends (1,2), the traditional products that are a leading cause of protein-energy malnutrition, still remain the primary weaning foods, especially in rural communities, largely because of the high cost of improved complementary foods, The ingredients for low-cost complementary foods must be derived from dietary staples available and affordable in the region of in...

Candidaemia or Candidasis: Controversy of Staphylococcus Sexually Transmitted Infection?

ABSTRACT Herbal medications are becoming increasingly popular but a most-extraordinary claim by traditional/herbal medical practitioners relates to a Gram-positive bacterium, Staphylococcus, which has been depicted as a deadly sexually transmitted disease that manifest in the form of worms and other symptoms; with contributory roles including infertility, sexual dysfunction and impotency. They further boasted that they are the only ones that possessed the remedy (herbal) for the Staphylococc...

Thermo-Physical and MeThanical Properves of Five Wood Speaes Grown in Abeokuta, Ogun State, Nigeria

ABSTRACT Thermal conductivity. toughness, cleavability tensile and bending strengths of Khqa senegalensis (Oganwo), Nauclea cliderrichii (Opepe), Triplochiton scleroxylon (Arere), Pycnanarhus angolensis (Akomu), Albizia zygia (Ayunre) grown in Ogun State, Nigeria were investigated to obtain preliminary data on these properties to guide utilization. The thermal conductivity was measured using fully automated unitherrn 6000 Guarded Hot Plate (-170 to 550'~) while the tensile and bending strengt...

THE EFFECT OF POROSITY AND ANGLE OF INCLINATION ON THE DEFLECTION OF FLUID FLOW IN POROUS MEDIA

ABSTRACT The movement of contaminated fluid from a solid waste landfill into a portable water aquifer located beneath is an example of unwanted underground flow. With the problem of limited portion of land available for building construction in the cities, coupled with the rise in price of good and accessible land, there IS a need for. quick and urgent solutions to environmental pollution that may be resulted from this problem In this research, a laboratory setup consisting of a big transpare...

Extracellular release of acid phosphatase from blood stream forms of Trypanosoma brucei brucei.

ABSTRACT Acid phosphatase (ACP) activity was demonstrated in blood stream form of Trypanosome brucei brucei harvested from infected Wister rats by Ion Exchange DEAE Cellulose 52 chromatography. Whole parasite extract (WPE) and Excretory Secretory Extract (ESE) were prepared and analyzed for acid phosphatase activity. A higher ACP activity (85.5 µmol/min) was recorded in WPE compared to ESE (36.8 µmol/min). ACP activity in ESE is suggestive of the presence of a cell rich enzyme. Phase separ...

Petroleum Exploitation or Human Exploitation? An Overview of Niger Delta Oil Producing Communities in Nigeria

This paper examined the impact of petroleum exploitation on the environment of the Niger Delta oil producing communities in Nigeria. This is in furtherance of the understanding that human beings are at the centre of concerns for sustainable development. The paper observed that there was need for the adoption of measures that would provide a reasonable degree of protection of ecological and human environment from the activities of the oil industry in Nigeria. 

An assessment of Information Security Awareness among employees in Higher Education Sector in Zambia: A case of Zambia’s public Universities

Abstract The use of Information and Communication Technology to collect and process large volumes of data into information has made it possible for organisations to find ways and means of making informed decisions within a short space of time. There is so much dependent on information systems to such an extent that system failure can adversely compromise the organisation’s operations. The education sector has not been left out but has instead become an information super house. The developm...


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