Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

Factors Influencing Maize Crop Production Among Small-Scale Farmers In Kuria East Sub-County, Migori County, Kenya

ABSTRACT Maize is the main staple food crop in Kenya and is of vital concern to agricultural policy decisions, food security and overall development of the sector and the economy. It is also the dominant staple food crop in Kuria east sub-County. However, there has been a declining trend in maize production among farmers in the study area threatening household food security. This study was conducted in Kuria east sub-County using cross sectional survey research design and sought to achieve th...

Origin Of Ohe Pond In Nsukka, Evidence From Geophysical Investigation

ABSTRACT   The study area is located in Nsukka Local Government Area of Enugu State Nigeria. It lies between latitudes 6° 49' N, and 6° 50' N, and longitudes 7° 15' E, and 7° 21' E respectively. The area is underlain by Nsukka Formation, which is capped by the laterites, and underlain by heterolithic Sandstone / Siltstone layers with some clays or shale at some deeper horizons.  Geophysical investigation using Electrical Resistivity and IP methods with ABEM Terameter, SAS 1000, reveal...

Interpretation Of Aeromagnetic Data Around Nsukka Area, Southeastern Nigeria.

ABSTRACT The Nsukka area is a sedimentary basin within the Anambra basin which is part of the lower Benue trough. The Nsukka sheet (covering the aeromagnetic data of Nsukka) lies between latitudes 6030΄ and 7000ʹNorth and longitudes 7000ʹ and 7030ʹEast. The IGRF corrected aeromagnetic data ofNsukka sheet, southeastern Nigeria has been interpreted using the standard Euler deconvolution, source parameter imaging,forward and inverse modelling methods with the objectives of determining the d...

Syntheses Of Benzothiazinophenothiazine Derivatives And Evaluation Of Their Antimicrobial Activities

ABSTRACT The syntheses of benzothiazinophenothiazine derivatives from simple heterocyclic compounds as precursors is described. Condensation of 2-aminothiophenol with 2,3-dichloro-1,4-naphthoquinone in an alkaline medium furnished a good yield of the intermediate, 6-chloro-5H-benzo[a]phenothiazin-5- one. Further condensation of the intermediate with 2,4-diamino-6-hydroxypyrimidine-5-thiol obtained by alkaline hydrolysis of 2,4-diamino-6-hydroxy-5-thiacyanatopyrimidine gave the benzothiazinop...

Basin Subsidence Decompaction and Burial History Modeling Techniques.

Abstract A discussion of somc burial and thermal history modelling techniques is given, together with the applicability of these to some sedimentary basins in Nigeria. The rilcchanisms of basin formation discussed follow the basic concept that basin subsidence is an isostatic response to thinning of the crust and cooling of a thermal anomaly. The rate of subsidence! is mainly a function of thc cooling rate, further modificd by additional load related to replaccrnent of sea water by accumulati...

Changes In Physicochemical Properties Of Instant Kunun Zaki Flours Produced From Millet (Pennisetum Typhoiduem) And Malts Of Cowpea (Vigna Unguiculata) And Soybean (Glycine Max) During Storag

ABSTRACT In this study, instant kunun zaki powders were produced from millet-cowpea malt and millet- soybean malt. The instant powders were packaged in polypropylene plastics and stored for 3 months. During this period, studies of the changes in physiochemical and functional properties of the packaged flour were carried out every 30 days for 3 months. Production of instant powders was by blending millet with malt of cowpea for millet cowpea malt (MCm) and millet with malt of soybean for mill...

Amplitude Variation With Offset (Avo) Attribute Analysis For Seismic Reservoir Characterization And Seismofacies Study Of Kuyolo Field, Niger Delta Basin

ABSTRACT Amplitude variation with offset (AVO) attributes analysis, based on integration of geophysical and petrophysical data has become an important and innovative tool for the detection of hydrocarbons in many exploration provinces of the world, including the Niger Delta Basin. The method has been demonstrated to be effective when seismic data processing is carefully done with detailed petrophysical modeling from complete well log suites. However, routine application of the method has fro...

Groundwater Potentials Of The Nanka Sands Around Nanka-Oko And Its Environs, Anambra State

                                                         ABSTRACT   Investigations were carried out for groundwater potentials and hydro-geochemical characteristics of the Nanka-Oko area and environs, southeastern, Nigeria. The areas are underlain by the Nanka Sands Formation. Data from 14 vertical electrical soundings were interpreted using computer aided techniques (IPI2win software). A total of 16 borehole groundwater samples, were also analyzed for their phys...

Markov Chain And Stock Price Movement In Nigeria (1985-2013)

ABSTRACT The share prices of the stock market are volatile in nature. Investors are at risk without an indepth knowledge of the operations of the stock market. We used regression analysis to ascertain the relationship between the movement of share prices and economic growth. A regression model was developed to capture the effect of the movement of share prices in the Nigerian stock exchange market on economic growth. Markov chain was used to find effect of the share prices. The results show ...

Evaluation Of Radioprotective Effect Of Gongronema Latifolio Leaf Extract On Whole-Body Irradiated Wistar Albino Rats

ABSTRACT The purpose of the study was to evaluate the radioprotective effects of Gongronema latifolio (GL) leaf extract on a whole-body irradiated wistar albino rats. A prospective experimental and cross-sectional design was adopted for this study and it included a control group and experimental group. Part of the control group (normal control NC) was not irradiated neither was it administered with GL extract but the other part (experimental control EC) was only exposed to graded radiation ...

Prevalence And Intensity Of Soil Transmitted Helminths Among Preschool Age Children In Elburgon Municipality, Kenya

Soil transmitted helminths infections are a major public health challenge in developing countries especially those confined to the tropics. These infections include the three common intestinal parasites namely: Trichuris trichiura, Ascaris lumbricoides, and hookworm (Ancylostoma duodenale and Necator americanus). Soil transmitted helminths are among the neglected tropical diseases that infect the less privileged populations whose risk increases with poor hygiene and sanitation. Helminths...

Optimization Of Brewing, Processing Conditions And Their Effects On The Chemical And Sensory Quality Of Purple-leafed Kenyan Tea

The Tea Research Institute (TRI) developed TRFK 306 tea clone which is rich in anthocyanin as a strategy to diversify Kenyan teas. TRFK 6/8 was used as a control in the study being a standard clone used at the TRI. TRFK 306 can be utilized non-processed but there is no well researched, documented data on the best brewing conditions. Consumers add edible acids to its brew to improve the colour and taste but information on the acid effect is scanty. Information on the quality of products m...

Efficacy Of Leonotis Nepetifolia L. And Ocimum Gratissimum L. Extracts In Controlling Ascochyta Blight (Phoma Exigua) Of French Bean (Phaseolus Vulgaris L.)

French bean (Phaseolus vulgaris L.) is an important export vegetable crop that faces serious production challenge due to Ascochyta blight (Phoma exigua). The objectives of this studywere to determine the; (i) antifungal activities of methanol extract of Leonotis nepetifolia and  Ocimum gratissimum against Phoma exigua in vitro, (ii) fungicidal effects of extracts of the two test plants on the incidence and severity of Ascochyta blight, and yield of French bean. Methanol extracts of compo...

Anti-microbial Activity, Toxicity And Chemical Characterization Of Extracts Of Indigofera Lupatana Baker F. Plant

Indigofera lupatana Baker F. (locally known as Mugiti) has been used by Mbeere community of Kenya to treat cough, diarrhea, pleurisy and gonorrhea. These and other infectious diseases are a cause of morbidity and mortality in humans and animals. Their effects are further aggravated by drug resistance. There is also increased emergence and re-emergence of infections from previously harmless micro-organisms, as part of nosocomial and opportunistic infections. This calls for search of new d...

Purification And Structure Elucidation Of Biologically Active Compounds Produced By A Trametes Spp (Jo5066) In Biotechnological Cultures Against Aedes Aegepti And Selected Microorganisms

Fungi, especially higher ones, have received a lot of attention in the recent decades due to the advances of biotechnological techniques. This is because secondary metabolism in fungal biotechnological cultures is manipulable and produces an array of compounds with diverse as well as novel chemical and biological properties. The activities can be taped into to address the myriad problems afflicting local communities in Kenya especially in agrochemical and medical sectors. Disease burden ...


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