Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

Pathogen identification and food safety

i have collected data and have tried to write a paper.

SYNTHESIS AND CHARACTERIZATION OF ECO- FRIENDLY UREA-FORMALDEHYDE COMPOSITES BASED ON NATURAL CELLULOSE FIBER

Cellulose is the most common structural biological organic compound on Earth which is widely used in paper and textile industries and urea-formaldehyde resin is a thermosetting plastic used mostly as adhesives for plywood, particleboard and other structured wood products. Natural fiber composites are realistic alternatives of glass fiber composites. Using urea-formaldehyde, resorcinol-formaldehyde, phenol-formaldehyde, saturated polyesters as matrixes and natural fiber as reinforcement, ...

Properties of urea-formaldehyde-resin-cellulose composites

Cellulose is the most abundant, structural, biological organic compound on Earth which is widely used in paper and textile industries.  In  this  project  work,  the  blend  of  compressive  character  of  Urea-Formaldehyde Resin with addition of Cellulose is tested. Cellulose can be extracted from dried plant by alkaline treatment (mercerization), followed by neutralization with acid; product of which undergoes bleaching to produce pure form of cellulose. Urea Formaldehyd...

Eco-friendly Urea-Formaldehyde Composites Based on Natural Cellulose Fiber

The variation of character of urea formaldehyde resin with addition of cellulose extracted from corn husk was tested. Cellulose was extracted from dried raw corn (Zea mays) husk, the second largest agricultural crop grown around the world, by alkaline treatment (mercerization), followed by neutralization with acid; product of which underwent bleaching to produce pure form of cellulose. Urea-formaldehyde (UF) resin was prepared by heating the formaldehyde in paraffin oil bath and adding...

APPLICATION OF PSYCHROPHYLIC ENZYMES IN BIOTECHNOLOGY

Psychrophilic enzymes are biocatalysts that control biochemical processes at low temperatures by either accelerating or decreasing the reaction rate. These enzymes are mainly obtained from microorganisms which inhabit cold environments and proliferate at low temperatures. The cold-loving organisms referred to as psychrophiles are adapted to the extreme cold conditions which resulted in changes in their biochemical machineries such as their enzymes. This resulted in certain characteristics of ...

BIOCHEMICAL ROLE OF VITAMIN A IN VISION

1.0 INTRODUCTION Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin  A  carotenoids  (most notably beta-carotene). Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision (Fennema, 2018). Vitamin A is needed by the retina of the eye in the form of retinal, which combines with protein opsin to form rhodopsin, the...

Comparison Of Three Numerical Methods For Estimating Weibull Parameters Using Weibull Distribution Model In Nigeria

There is a crucial need in Nigeria to enhance the development of wind technology in order to boost our energy supply. Adequate knowledge about the wind speed distribution becomes very essential in the establishment of Wind Energy Conversion Systems (WECS). Weibull Probability Density Function (PDF) with two parameters is widely accepted and is commonly used for modelling, characterizing and predicting wind resource and wind power, as well as assessing optimum performance of WECS. Therefore, i...

Sorption of refampicin on variable soil

Sorption and desorption of rifampicin was assessed on three different soil. Sorption mechanism was studied in terms of equilibrium and kinetics at different pH. Linear, Freundlich and Langmuir isotherm models were adopted to study the isotherm. The experimental data were best described by pseudo-second order kinetics (R2 = 1.00). It was observed that rifampicin absorbs better on soil with lowest organic carbon content. Sorption was observed to increase with decrease in aqueous pH and i...

A Philosophical Appraisal of the Politics and Economics of Food in Africa

The continent of Africa has recorded impressive economic growth for over two decades. Factors identified as contributing to this growth include commercial oil deposits, inflation control, government liberalization and privatization policies, foreign direct investment, private sector investment in industries such as construction and service sectors, and a strong agricultural production. The continent is likely to continue enjoying strong economic growth if these resources are well manag...

Neuromuscular junction in cell necrosis and apoptosis

ABSTRACTThe neuromuscular junction (NMJ) is a unique, specialized chemical synapse that plays a crucial role in transmitting and amplifying information from spinal motor neurons to skeletal muscles. NMJ complexity ensures closely intertwined interactions between numerous synaptic vesicles, signaling molecules, ion channels, motor neurons, glia, and muscle fibers, making it difficult to dissect the underlying mechanisms and factors affecting neuro-degeneration and muscle loss. Muscle fiber ...

DESIGN AND IMPLEMENTATION OF ROAD MAINTENANCE MANAGEMENT INFORMATION SYSTEM (A CASE STUDY OF FERMA, ENUGU BRANCH)

ABSTRACTThe increasing demand for road transport in Nigeria andthe huge Government investment on roads have generatedthe need to encourage road maintenance and sustainability.This project work covers the importance of managinginformation and the importance of keeping past records forthe Federal Road Maintenance Agency (FERMA) and how toimprove on it. And it also cover the following areas: workmonitoring process file, staff information file, road andbridge maintenance file, amount spent file, ...

IVERMECTIN: AN ENDECTOCIDE

ABSTRACT   Ivermectin (IVM), a dihydro derivative of avermectin (AVM), originating solely from the fermentation products of Streptomyces avermitilis had an immeasurably beneficial impact in improving the lives and welfare of billions of people worldwide. Originally introduced as a veterinary drug, it was quickly discovered to be ideal in combating two of the world’s most devastating and disfiguring diseases; onchocerciasis and lymphatic filariasis (LF) which has plagued...

TUNGIASIS: A NEGLECTED TROPICAL DISEASE

ABSTRACT Tungiasis is an ecto-parasitic disease of humans and animals caused by the burrowing of gravid female fleas of the genus ‘Tunga’. Of the known species of Tunga fleas, Tunga penetrans and Tunga trimamillata are parasites of humans besides other warm blooded mammals, most of which are peri-domestic. The host of the others is limited to a few genera of wild mammals. The burrowed female flea rapidly expands its body size, causing immense itching, inflammation, pain a...

On mathematical models for pension fund optimal selection strategies

Pension, being regular payments made to retirees or their beneficiaries after retiring from active service, needs efficient and effective management because of the funds involved as the living standard of the retirees and their dependants rest on it after retirement. In attempt to maximize the wealth of pension contributors, the investors may end up losing the pension fund assets because higher returns on investment go hand in hand with higher risk of loss of invested contributions/savi...

COMPARATIVE STUDIES OF THE BIOSORPTION OF HEAVY METALS ( LEAD & ZINC) USING TEA LEAVES (CAMELIA SINENSIS) & TEA FIBRE AS ADSORBENT

Abstract: This research has helped us to ascend from the initial two exploratory studies to a more advanced general conclusion and theory that tea leaves (Camellia sinensis) has a great potential for Pb(ii) and Zn uptake, as such, a more suitable Low-cost adsorbent for the effective removal of Pb (II) and Zn from industrial effluents waste water than tea fibre. This is coined from the results of the different biosorption studies carried out as a function of contact time, initial metal ion...


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