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this thesis basically deals with the well-known notion of the bear-invariant of groups, which is the generalization of the schur multiplier of groups. in chapter two, section 2.1, we present an explicit formula for the bear-invariant of a direct product of cyclic groups with respect to nc, c>1. also in section 2.2, we caculate the baer-invatiant of a nilpotent product of cyclic groups wuth resp...
Although there has been significant reduction in the total number of maternal deaths worldwide, however, many developing countries like Nigeria have not been able to achieve MDG 5 by the end of 2015 [1]. This is buttressed by the fact that Nigeria and India recorded 58,000 (19%) and 45,000 (15%) maternal deaths respectively accounting for 34% of the total global maternal deaths [1]. Moreover, 5...
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
the paper determined optimum farm plan for food security among smallholder farmers in imo state, nigeria. data were collected with structured and validated questionnaire from 180 smallholder crops farmers in imo state. data were analyzed using descriptive statistics (mean, frequency distribution and percentages), budgetary analysis and linear programming model. results show that the mean age of...
the purpose of this study is to investigate the relationships between teachers’ immediacy behaviors and iranian students’ willingness to talk in english classes. analysis of the results from willingness to talk scale represents a relatively high level of willingness to talk in english classrooms among iranian language learners. the total mean score of students’ willingness to talk was 66.3 ou...
in this thesis, phosphorus ylides [phbppy], [no2bppy] and [brbppy] have been synthesized through the formation of phosphonium salt and dihydrogenation, followed by the reaction of pd(oac)2 and the orthopalladated dinuclear complexes [pd(?-cl)(phbppy)]2, [pd(?-cl)(no2bppy)]2 and [pd(?-cl)(brbppy)]2 have been produced. the reaction of dinuclear complexes and bidentate ligands [l = bipy (2,2-bipyr...
BACKGROUND:There is no comprehension data on anatomicalindices of Nigerian goats. OBJECTIVES: To show osteometricvalues of some cranial indices in Nigerian goats. METHODS:Sixty (60) goat skulls that were found around Makurdi, Kwande,Katsina-ala and the neighbouring Adamawa state of Nigeria,were studied by investigating the 30 craniometric values.RESULTS: The measured distance from the facial tu...
The first case of HIV in Nigeria was reported in 1986 in a sexually-active 13 years old girl, and soon afterwards, HIV infection was identified among commercial sex workers in Lagos and Enugu. Cases of HIV infection were occasionally reported from various parts of the country and have been growing steadily (1). Now, Nigeria has the largest HIV/AIDS epidemic in sub-Sahara Africa (2). A syphilis-...
Bovine brucellosis is endemic in Nigeria; however, limited data exist on nationwide studies and risk factors associated with the disease. Using a cross-sectional sero-epidemiological survey, we determined the prevalence of and risk factors for brucellosis in slaughtered cattle in three geographical regions of Nigeria. Serum samples from randomly selected unvaccinated cattle slaughtered over a p...
Nigeria and Ghana are the most densely populated countries in the West African sub-region with fertility levels above world average. Our study compared the two countries' fertility levels and their determinants as well as the differentials in the effect of these factors across the two countries. We carried out a retrospective analysis of data from the Nigeria and Ghana Demographic Health Survey...
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