Showing papers by "University of Nigeria, Nsukka published in 1977"
TL;DR: It is suggested that although the predominant bacteria would be expected to produce lactice acid from the free sugar of the cassava, the breakdown of theCassava glucoside linamanin is probably accomplished more by the endogenous enzyme linamarase than by bacterial activity.
Abstract: 1The predominant micro-organisms isolated from de-watered cassava pulp fermenting for garri production over a six-day period were mainly Leuconostoc and, to a lesser extent, yeasts
2Corynebacterium sp which had been implicated by earlier workers as the bacterium fermenting cassava was present in low numbers only
3It is suggested that although the predominant bacteria would be expected to produce lactice acid from the free sugar of the cassava, the breakdown of the cassava glucoside linamanin is probably accomplished more by the endogenous enzyme linamarase than by bacterial activity
117 citations
TL;DR: The first sedimentary cycle of Albian to Santonian time was confined mainly to the Benue-Abakaliki trough and the lithic fill is characterised by feldspathic sandstone.
113 citations
TL;DR: In this article, the authors investigated the relationship between the sesquioxide content and other physical and engineering properties of Eastern-Nigeria laterites and concluded that no correlation was found between ironoxide content and any other physical or engineering properties as has been suggested by others.
48 citations
TL;DR: The survival time of the larvae appeared to be prolonged when rain fell evenly throughout the periods the larvae were on pasture, and rainfall was the most important epizootiological factor which influenced the development and survival of the infective larvae.
Abstract: The development and survival of the eggs ofHaemonchus contortus on pasture at Ibadan were studied by spreading faeces containing eggs on grass plots from October 1973 to October 1974. Development of the eggs to the infective larvae took place within one week in May, June, July, September and October. Larvae were not recovered in the other months. Their survival times were 28, 42, 42, 35, 63 and 49 days respectively in October 1973, May, June, July, September and October 1974. Rainfall was the most important epizootiological factor which influenced the development and survival of the infective larvae. Development of the eggs to the infective larvae took place when the mean daily rainfall for the first 7 days was 3 mm or more. The survival time of the larvae appeared to be prolonged when rain fell evenly throughout the periods the larvae were on pasture.
35 citations
TL;DR: The kinetics of this elimination and the data obtained are discussed in relation to two models of the molecular nature of the [psi] genetic determinant—one considering the [PSi] determinant as an autonomous nucleic acid, the other treating the possibility that the [ psi] nucleic acids is that which codes for rRNA in the nuclear genome.
Abstract: When a [psi-] strain of yeast mutates to [psi+], the efficiency of suppression by certain ochre suppressors is increased. The [psi+] phenotype is inherited extrachromosomally. There is a nuclear gene, PNM, which, when mutant, causes loss of the [psi+] phenotype. PNM- is dominant to PNM+ and a heterozygous diploid gradually loses the ability over successive generations, to produce PNM+ [psi+] spores. This paper describes the kinetics of this elimination and the data obtained are discussed in relation to two models of the molecular nature of the [psi] genetic determinant--one considering the [psi] determinant as an autonomous nucleic acid, the other treating the possibility that the [psi] nucleic acid is that which codes for rRNA in the nuclear genome.
30 citations
TL;DR: The authors argued that the banks fail to meet their needs because it is so difficult to obtain loans, while the private money-lenders, often operating illegally, almost always charge exorbitant rates of interest that discourage all but the most desperate of borrowers.
Abstract: Complaints are frequently heard that the African farmer, the small trader, the everyday person has no means of getting the funds needed to improve his farm, to expand his trade, or to pay his child's school fees. It is often alleged that the low-literacy peasants and workers in a partially-monetised economy have no desire to save, even if there was any surplus money, and that in any case there are no institutions in which to accumulate or to redistribute their savings. It is argued that the banks fail to meet their needs because it is so difficult to obtain loans, while the private money-lenders, often operating illegally, almost always charge exorbitant rates of interest that discourage all but the most desperate of borrowers.
26 citations
TL;DR: In this article, the supernatant of palm wine was pasteurized with 0·05% sodium and bisulphite to preserve palm wine for at least six months and possibly longer.
Abstract: 1A method has been developed which preserves palm wine for at least six months and possibly for longer.
2Its basis is to pasteurize the supernatant of centrifuged palm wine with 0·05% sodium. bisulphite.
21 citations
TL;DR: In this article, it was shown that the daily variation S(H) arises essentially from the augmentation of the field H in daytime in consistency with the atmospheric dynamo theory of the geomagnetic daily variations.
21 citations
TL;DR: There is a substantial increase in the activities of phosphorylase, hexokinase, glucose-6-phosphate dehydrogenase and alcohol dehydrogenases in white yam tubers as they age, suggesting that the pentose phosphate pathway is important in yam tuber tissue.
20 citations
18 citations
TL;DR: Der Verfasser berichtet über den seltenen Fall eines 40-jährigen symptomfreien Nigerianers, dessen plötzlicher Tod durch emotionalen Streß verursacht wurde.
Abstract: Der Verfasser berichtet uber den seltenen Fall eines 40-jahrigen symptomfreien Nigerianers, dessen plotzlicher Tod durch emotionalen Stres verursacht wurde. Der Obduktionsbefund ergab ein blutendes Meningiom im mittleren Drittel der Crista Sphenoidalis.
TL;DR: In this paper, fresh palm oil samples were obtained from the Nsukka local market and analyzed for their β-carotene content and the amount of β-Carotene decreased with an increase in temperature.
Abstract: Fresh palm oil samples were obtained from the Nsukka local market and analyzed for their β-carotene content. Portions of the palm oil samples were also heated to 11 temperatures between 138°C and 258°C with an interval of 12°C and the β-carotene determined. The amount of β-carotene decreased with an increase in temperature. The destruction of β-carotene was greater when the oil was heated continuously for 30 min at any given temperature. When palm oil is used as a frying medium, only a very small fraction of the β-carotene is retained.
Journal Article•
TL;DR: In this article, an attempt was made to document the prevalence of seizures and neurological diseases in children around Enugu, where records of all patients admitted over an 18-month period to the medical paediatric ward of the U.N.T.H.Enugu, were reviewed, whilst 200 mothers were interviewed and enquiries made about occurrence and frequency of convulsions in their families.
Abstract: In this paper, an attempt was made to document the prevalence of seizures and neurological diseases in children around Enugu. The study was partially retrospective. Records of all patients admitted over an 18-month period to the medical paediatric ward of the U.N.T.H. Enugu, were reviewed, whilst 200 mothers were interviewed and enquiries made about occurrence and frequency of convulsions in their families.
TL;DR: In this paper, the pure projective systems are characterized and a bound on the rank of purely simple systems is obtained, and the classification of a pair of linear maps fl, VI V2, f2: V1 -* V2 is connected with the graph.
Abstract: A pair of complex vector spaces (V, W) is called a system if and only if there is a C-bilinear map from C2 x V to W. The category of systems contains subcategories equivalent to the category of modules over the ring of complex polynomials. Many concepts in the latter generalize to the category of systems. In this paper the pure projective systems are characterized and a bound on the rank of purely simple systems is obtained. Introduction. The classification of a pair of linear maps fl, VI V2, f2: V1 -* V2 is connected with the graph
TL;DR: In this article, it was shown that it is possible to calculate the effective potential in superspace without decomposing superfields into component fields, and the most general renormalizable Lagrangian for chiral superfields was treated.
Abstract: We show that it is possible to calculate the effective potential in superspace without decomposing superfields into component fields. The most general renormalizable Lagrangian for chiral superfields is treated.
TL;DR: In this paper, Nwugo gave the best results among the cultivars used, and preliminary results show a satisfactory product can be made with cassava, comparing favorably with beer manufactured from conventional malt.
Abstract: At present malt for beer production in Nigeria is imported. Substitution of malt with cassava, an indigenous crop, would conserve foreign exchange and also create employment opportunities for many workers in cassava plantations. Preliminary results show a satisfactory product can be made with cassava, comparing favorably with beer manufactured from conventional malt. Among the cultivars used, Nwugo gave the best results.
TL;DR: Following surgical removal of the tuberculoma the patient achieved complete neurological recovery from a preoperative state of total paralysis in his lower limbs.
TL;DR: The ectotrophic mycorrhizal fungi tested exhibited sensitivity to Trifluralin concentrations and the consequence of such fungitoxicity was discussed.
Abstract: Laboratory experiments were conducted to test the effect of various concentrations of Trifluralin on certain fungi. The ectotrophic mycorrhizal fungi tested were: Amanita citrina Schaefer, Tricholoma pessundatum (Fr.) Quel., and Tricholoma saponaceum (Fr.) Qtiel. All exhibited sensitivity to Trifluralin concentrations. The consequence of such fungitoxicity was discussed.
01 Dec 1977
TL;DR: The correlation between thermal stability and phytoplankton was positive during the flood season and negative during the dry season when the nutrient condition was the determining factor as mentioned in this paper, and the correlation was of no significance when these two contrasting seasonal phases were disregarded.
Abstract: The correlation between the thermal stability and phytoplankton was positive during the flood season when the transparency of water was the determining factor. On the other hand the correlation was negative during the dry season when the nutrient condition was the determining factor. The correlation was of no significance when these two contrasting seasonal phases were disregarded.
TL;DR: High density lipoprotein cholesterol concentrations were significantly lower in ischaemic heart disease patients than in healthy subjects when age and sex-matched, but not in the older age group (>60 years).
Abstract: High density lipoprotein cholesterol concentrations were significantly lower in ischaemic heart disease patients than in healthy subjects when age and sex-matched. This difference was, however, not observed in the older age group (>60 years).
Journal Article•
TL;DR: This paper argued that public administration as it is presently conceived, taught and practised both in the developed and underdeveloped parts of the world is both theoretically and empirically an impossible tool for bringing about development in the 'third' world.
Abstract: It will be argued in this paper that Public Administration, as it is presently conceived, taught and practised both in the 'developed' and underdeveloped parts of the world is both theoretically and empirically an impossible tool for bringing about development in the 'third' world.
TL;DR: Eggs of G. rhomboidalis are usually laid singly in separate excavations made with the snout of the beetle in either leaf petioles or tender portions of shoots of host plants, Amaranthus sp.
Abstract: Summary Eggs of G. rhomboidalis are usually laid singly in separate excavations made with the snout of the beetle in either leaf petioles or tender portions of shoots of host plants, Amaranthus sp. At field temperatures fluctuating between 19°C and 30°C and in contact with water, eggs hatched in a mean of 2·8 days while unmoistened ones shrivelled up. Beetle larvae bore and feed on the stele of host plants where development, up to adulthood, is completed in self-made larval galleries. On the average, the larvae are capable of consuming 40% and above of the cross-sectional areas of stems of infected host plants. In nature, multiple infection of host plants was quite common with 1–16 beetle larvae/plant rather usual. Consequently, the stem of virtually every healthy-looking host plant is internally traversed by larval galleries, at times even below ground level. Adults bite their way out of the stem after a mean of 36·37 days from date of oviposition. Larval damages to host plants are the gravest and bring ...
TL;DR: The evidence examined in this paper shows that the fertility pattern for the Ngwa Igbo of Nigeria is uniformly high for all age groups of wives and all durations of their marriages and shows no sign of incipient decline.
Abstract: The evidence examined in this paper shows that the fertility pattern for the Ngwa Igbo of Nigeria is uniformly high for all age groups of wives and all durations of their marriages and shows no sign of incipient decline. Factors favoring high fertility (number of children dead to wives whether the wife desires additional children and age of wife are the best predictors) are more powerful than those tending to depress fertility. The practice of short birth spacing very low incidence of infertility or childlessness long reproductive span and virtual absence of any effective method of family limitation are other factors contributing to high fertility. Polygyny number of previous marriages and age of wives at first marriage may tend to reduce fertility but have not reached a point where they can exert much effect. The level of fertility is thus likely to remain high until factors favoring high fertility are counter balanced by strong negative factors. Probable factors would likely be the spread of contraceptive knowledge and practice raising the level of female education beyond the primary grade and a substantial reduction in the incidence of infant and child mortality with accompanying awareness of that reduction by women. Data indicate that the combined effect of all other sociocultural factors is overshadowed by the incidence of childhood mortality and the consequent desire by wives for more children. Data for this study come from a single demographic inquiry conducted in Ngwa Igbo clan of the Imo State of Nigeria conducted from August to September 1974 consisting of a 3 stage cluster sampling of 1672 currently married women from 16 villages with the final weighted data resulting in 2466 cases. The average number of births to all wives aged 15 and over was the basis of investigation of factors affecting fertility with marriage duration as an intervening variable.
TL;DR: A taxonomic survey of grass rusts in the University town of Nsukka was carried out and fifteen species distributed among three genera and six tribes of Gramineae are discussed.
Abstract: A taxonomic survey of grass rusts in the University town of Nsukka was carried out. Fifteen species distributed among three genera and six tribes of Gramineae are discussed. Eight taxa are reported...
TL;DR: Necessity and sufficiency conditions are given for the existence of a finite set of redundant constraints which together with a given set of constraints in an optimization problem satisfy the Kuhn—Tucker, and the Guignard Constraint qualifications when the originalSet of constraints fails to satisfy either or both of them.
Abstract: Necessity and sufficiency conditions are given for the existence of a finite set of redundant constraints which together with a given set of constraints in an optimization problem satisfy the Kuhn—Tucker, and the Guignard Constraint qualifications when the original set of constraints fails to satisfy either or both of them.
01 Jan 1977
TL;DR: In this paper, an investigation into the properties of the material has shown that some factors which either are not usually considered or are of relatively little consequence in relation to the strength of concrete, have c6nsiderable influence on the strength and stability of sandcrete blocks.
Abstract: Sandcrete is a mixture of cement, sand and water. Often this material is considered as micro-concrete in engineering circles and thus it is expected to exhibit similar trends as concrete. An investigation [I] into the properties of the material has shown that some factors which either are not usually considered or are of relatively little consequence in relation to the strength of concrete, have c6nsiderable influence on the strength of sandcrete blocks. Furthermore, this material is the principal wall unit in Nigeria and it is known to be used in other African countries as well as in other continents such as Asia, Europe and USA. Despite this wide use, no published relevant data on the material could be located in the technical literature. For these reasons, a brief discussion of the highlights of the investigation seems justified.
TL;DR: A survey of the domestic fly population of Nsukka, a semi-urban University town in the guinea-savannah belt of West Africa, showed infestation of human and animal shelters with at least 19 species.
Abstract: A survey of the domestic fly population of Nsukka, a semi-urban University town in the guinea-savannah belt of West Africa, showed infestation of human and animal shelters with at least 19 species, comprising 5 types of biting flies (viz: tse tse flies Glossina spp.; horn flies Haematobia sp.; stable flies Stomoxys sp.; horse flies Chrysops spp. and louse flies Hippobosca sp.); and several types of non-biting flies (including house flies Musca spp.; blow flies Lucilia sp., and Chrysomyia sp.; flesh flies Sarcophaga sp., and warble flies Oestrus sp. etc.).
Preferred breeding sites and areas of aggregation of the insects were studied against the background of the relative fly infestation rates of such habitats as human homes, animal sheds and abattoirs; food houses; sewage and refuse dumps, and open air locations. Also, variations in the diurnal, daily and monthly availability of the flies were noted and related to seasonal changes in temperature and humidity and to ecological aspects of the insects' life cycles.
TL;DR: The seedling growth in general and that of the rootsystem and laceral roots in particular, were severely inhibited and mycorrhizal development in the seedlings was consequently adversely affected.
Abstract: Pot experiments were performed to investigate the effects of Tritluralin on the mycorrhizal symbiosis of conifer seedlings. Infected forcst soils and potting mixturcs were mixed, pottcd and treated with Trifluralin at levels of 0.2 and 0.4ml/m2 Seeds of Pinus sylvestris L. and Picea abies (L.) Karst. were sown in the pots.
The concentrations tested, though recommended by the manufacturer produced phytotoxicity. The seedling growth in general and that of the rootsystem and laceral roots in particular, were severely inhibited. Mycorrhizal development in the seedlings was consequently adversely affected.
TL;DR: CCTV frame analyses of moving larvae during phases of the regime show changes in the wave form including a decrease in wavelength and an increase in amplitude, which reduced the rate of backward waves but not the percentage of larvae active nor the duration of the activity period.