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March 2013

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Novel taxa of black mildews from Kerala state
VB Hosagoudar and B. Fathima

This paper gives an account of six new species belonging to the group black mildews distributed among the genera, Asterina, Bheemamyces and Meliola. Of these, Asterina acronychigena, Asterina cassiifolia, Asterina urticacearum, Bheemamyces oleae, Meliola microtropidis and Meliola padmanabhapurica are the new species described and illustrated in detail.

A new flavan from the plant leaf extract of Cucurbita moschata
Edewor-Kuponiyi, Theresa Ibibia, Olajire Abiola Abass and Mmuo Agatha Ijeoma

Cucurbita moschata leaves were extracted with methanol to obtain the crude extract. The crude extract was subjected to fractionation using n-hexane, chloroform, ethyl acetate and n-butanol. The phytochemical screening of the fractions obtained revealed presence of flavonoids in the ethyl acetate fraction only. This fraction was subjected to both column and thin layer chromatography which resulted in the isolation of a pure compound. This compound was characterized using both physical and...

Physico-chemical changes observed during conversion of murrah buffalo colostrum to milk
Singh V. P. and Pathak V.

Colostrum is a fluid of mammary glands obtained by newborn in their early life to protect them against infections and provide nutrients. The phenomenon of physico-chemical changes takes place during conversion of colostrum to milk was studied. Study revealed that colostrum contains higher amount of proteins and total solids in comparison to milk. The colostrum obtained during evening hours was found rich in nutrients in comparison to morning colostrum.

Remittances inflow and financial sector development in Nigeria: A structural break approach
Godwin Chigozie Okpara and Joseph Chukwudi Odionye

The study investigated the impact of international remittances on the financial sector development in Nigeria. Considering the serious financial sector recapitalisation exercise in 2004, we employed the structural break approach using chow test on the Autoregressive Distributed Lagged model (ARDL) due to Pesaran and Shin (1999). The result of the Auto Regressive Distributed Lagged (ARDL) model indicated that international remittance inflow has positive but insignificant impact on financial...

Effect of pre-sowing treatments and nut orientations on emergence and seedling growth of seeds of teak tree (Tectona...
Aguoru C. U. and Enema O. J.

Studies were conducted to ascertain the effects of various pre-sowing treatments and nut orientation on emergence and seedling growth of seeds of Tectona grandis. Results showed that of the pre-sowing treatments, SDSA, TR, SHW, 30 minutes and TC followed by IN performed generally in terms of rate and percentage emergence as well as seedling vigour compared with the other treatments. SDSA however, manifested to do better in many aspects considered. Of the different nut orientations, BEU...

Vegetational diversity along altitudinal gradients in the upper yamuna forest division of Uttarakhand, India
Arvind Bijalwan and Shalini Singh

The present paper deals with the study conducted in the Upper Yamuna Forest Division of Uttarkashi district in Uttarakhand, India. The different altitudinal ranges varied from 1000-1500m, 1500-2000m, 2000-2500m were covered in this study. A total of 40 common tree species were recorded in 1000 to 1500m of elevation covering 26 families, 26 species in 1500 to 2000m covering 20 families and 14 common tree species in 2000 to 2500m of elevation belonging to 10 families. The decreasing trend of...

Deposition and characterisation of lead selenide (PbSe) thin films
Buba, A. D. A. and Adelabu, J. S. A.

Thin films of lead selenide (PbSe) were grown using the Chemical Bath Deposition (CBD) Technique. Optical and Electrical characterisation were carried out on the films with the view to determining their absorbance, reflectance and transmittance spectra which were used to calculate the optical constants: absorption coefficient and refractive index, while the conductivity () of the film was determined by measuring the dark d.c. electrical resistivity using the dc two point probe method in the...

Buruli ulcer morbidity and soil arsenic linkages in the amansie west district of Ghana: A geostatistical approach
Ebenezer Bonyah, Ebenezer Owusu-Sekyere and Emmanuel Harris

Buruli ulcer, a disease caused by infection with Mycobacterium ulcerans, is one of the most neglected but treatable tropical diseases. The causative organism is from the family of bacteria which causes tuberculosis and leprosy but knowledge gaps exist on the exact mode of transmission. The aim of this paper is to examine the link between the Buruli ulcer morbidity and Soil Arsenic concentration in the Amansie Wes t District of Ghana using kriging method. This paper provides the...

The frequency of rhesus alleles, haplotypes and genotypes in major sakaka city population, aljouf region, Saudi Arabia
Fathelrahman M. Hassan, Meshref A. Alruwaili and Atef H. Abdelhamid

Rh-D distribution also varies worldwide. The aim of this study was to document the frequency of Rhesus alleles, haplotypes and genotypes in Aljouf region, Sakaka. The EE genotype is not generally represented in the Aljouf province, and DcE/Ce genotypes were the shared (30.8%), while Dce/Dce and Dce/ce genotypes were less familiar (1.4%). The frequency distribution of Rh haplotypes among Aljouf population in the present study CDE(0.701) has the highest observed frequency followed by Cde (0....

Correlation analysis between sonic and density logs for porosity determination in the south-eastern part of the Niger...
Horsfall, O. I., Omubo-Pepple, V. B. and Tamunobereton-ari, I.

This paper reports comparative analysis of porosity values computed from sonic and density logs obtained from the same wells. Two well logs (sonic and density) acquired from OML X were digitized and analyzed for porosity. Results obtained showed that velocity and bulk density increases with depth due to compaction of rocks and the porosity values obtained from the two oil wells decreases with depth. Porosity values obtained at various depth from both sonic and density logs were subjected to...



               Prof. Dr. ISMAIL YILDIRIM