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Search Results: 1 - 10 of 720 matches for " MB Yakubu "
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Biological approach to oil spills remediation in the soil
MB Yakubu
African Journal of Biotechnology , 2007,
Abstract: Perhaps there is no any other raw material that has impacted so much, and found wide application on human civilization than petroleum hydrocarbon (PHC). The paradox is that it is this same black gold that threatens human environment. PHC pollution in the environment, as well as the importance of natural interactions amongst living entities to arrest the problems hitherto caused by oil spills are hereby examined. Biological approaches to pollution remediation, which include phytoremediation, bioremediation, and application of biosurfactant, are discussed. Two angles of approach to bioremediation of PHC spills in the soil are identified; the bioaugmentation and biostimulation. The use of surfactants of microbial origin has been found to be environmentally friendly, naturally selective and stable at elevated temperatures, PH and salt concentration. Similarly, genetic methods have been found to be overwhelmingly promising in detecting as well as assessing PHC soil pollution, and clean up.
Degradation and Moisture Absorption Study of Potato-starch Linear Low Density Polyethylene Blend
MK Yakubu, MB Musa, J Mukaila
Nigerian Journal of Basic and Applied Sciences , 2010,
Abstract: Composite of linear low density polyethylene (LLDPE) and potato-starch was produced and subjected to degradation studies with the agencies of enzymes, exposure to weather and immersion in water. Enzymatic hydrolysis degraded the matrix to an extent greater than 40% loss in strength and about 20% loss in elongation–at-break within just 10 days. These deteriorations correlated with the decrease in weight. Immersion in water indicated increased uptakes with starch content which also corresponded with decrease in tensile strength and elongation-at-break with time of immersion. Exposure to weather completely reduced the composites to easily crushable masses the extent of which was also related to starch content. Micrographs of the tested samples showed that the weak points are the starch sections which after being eaten up by microorganisms or swollen up by moisture lend the matrix more amenable to further degradation.
Prevalence and antibiotic susceptibility of Listeria monocytogenes in raw milk from cattle herds within Sokoto Metropolis, Nigeria
Y Yakubu,MD Salihu,OO Faleke,MB Abubakar
Sokoto Journal of Veterinary Sciences , 2012,
Abstract: One hundred and ninety two raw milk samples were collected from lactating cows identified in Fulani herds and small scale dairy farms within Sokoto metropolis in order to investigate the presence and determine the antibiotic susceptibility of Listeria monocytogenes in the milk. Selective culture and identification method was employed for the bacterial isolation and Kirby-Bauer technique was used for the antibiotic susceptibility test. Seventy six samples (39.58%) were positive for Listeria species, which upon biochemical characterization 39(51.3%) were Listeria innocua, 14(18.4%) Listeria ivanovii, 17(22.4%) Listeria monocytogenes, 4(5.3%) Listeria welshimeri and 2(2.6%) Listeria seeligeri. Antibiotic susceptibility test of the isolates revealed high resistance to ampicillin (100%), and streptomycin (80%), followed by ampiclox (70%), tetracycline (30%), then gentamycin (20%) while, there was no resistance to ciprofloxacin and chloranphenicol. The findings of this study necessitate the need for extension personnel to educate the Fulani herdsmen, milk handlers and other livestock producers on the significance of hygiene especially during milking and the effect of indiscriminate use of drugs particularly antibiotics. There is also need for the agencies concerned such as the National Agency for Food and Drugs Administration and Control (NAFDAC) to regulate the sales and use of both human and veterinary drugs by drug hawkers and other non-professional veterinary practitioners.
Prevalence of Escherichia coli some public water sources in Gusau Municipal, North Western Nigeria
I Garba, MB Tijjani, MS Aliyu, SE Yakubu, A Wada-Kura, OS Olonitola
Bayero Journal of Pure and Applied Sciences , 2009,
Abstract: This study investigated the presence of Escherichia coli from some public water sources in Gusau municipal, north- western Nigeria. This was done by determining the total coliform counts and the presence of Escherichia coli and its antibiotic susceptibility profile. A total of 180 well 60 tap and 60 packaged water samples were obtained from Gusau municipal on weekly basis over a period of seven month (August, 2006-Feb, 2007) covering part of rainy and dry seasons. Standard procedures were used for the identification of Escherichia coli and for estimating total coliform counts. All samples had coliform counts higher than the international standard recommended by the World Health Organization. Results of biochemical analysis of the samples showed that out of 63 confirmed Escherichia coli isolated, 41 (45.5%) were from well water, tap water had 14 (23.3%) while packaged water had 8(13.3%).The susceptibility profile of the isolates to nine antimicrobial agents indicated that majority of the isolates were highly susceptible to Chloramphenicol, Gentamycin, Perrfloxacin, Tarivid, Augmentin, Streptomycin, Sparfloxacin, and Ciprofloxacin, moderate susceptibility to Septrin and resistant to Amoxacilin were observed. None of the water samples met the WHO standards for drinking water and thus pose a serious health risk to its consumers and users if not properly treated.
Prevalence and antibiotic susceptibility of Listeria monocytogenes in raw milk from cattle herds within Sokoto Metropolis, Nigeria
Y Yakubu, MD Salihu, OO Faleke, MB Abubakar, AU Junaidu, AA Magaji, ML Gulumbe, RM Aliyu
Sokoto Journal of Veterinary Sciences , 2012,
Abstract: One hundred and ninety two raw milk samples were collected from lactating cows identified in Fulani herds and small scale dairy farms within Sokoto metropolis in order to investigate the presence and determine the antibiotic susceptibility of Listeria monocytogenes in the milk. Selective culture and identification method was employed for the bacterial isolation and Kirby-Bauer technique was used for the antibiotic susceptibility test. Seventy six samples (39.58%) were positive for Listeria species, which upon biochemical characterization 39(51.3%) were Listeria innocua, 14(18.4%) Listeria ivanovii, 17(22.4%) Listeria monocytogenes, 4(5.3%) Listeria welshimeri and 2(2.6%) Listeria seeligeri. Antibiotic susceptibility test of the isolates revealed high resistance to am picillin (100%), and streptomycin (80%), followed by ampiclox (70%), tetracycline (30%), then gentamycin (20%) while, there was no resistance to ciprofloxacin and chloranphenicol. The findings of this study necessitate the need for extension personnel to educate the Fulani herdsmen, milk handlers and other livestock producers on the significance of hygiene especially during milking and the effect of indiscriminate use of drugs particularly antibiotics. There is also need for the agencies concerned such as the National Agency for Food and Drugs Administration and Control (NAFDAC) to regulate the sales and use of both human and veterinary drugs by drug hawkers and other non-professional veterinary practitioners.
Prevalence of Organophosphorous Pesticide Residues in Pumpkin, Spinach and Sorrel Leaves Grown in Akwanga, Nasarawa State, Nigeria  [PDF]
E. G. Ibrahim, N. Yakubu, L. Nnamonu, J. M. Yakubu
Journal of Environmental Protection (JEP) , 2018, DOI: 10.4236/jep.2018.95032
Abstract: Three green leafy vegetable samples of pumpkin leaves, spinach leaves, and sorrel leaves were collected from three different locations in a farm in Akwanga and were tested for the presence of organophosphorus (OP) compounds. The concentrations of all the pesticide residues in the vegetable samples were determined using gas chromatography with mass spectrometry (GC-MS). The organophosphorus pesticides detected include carbaryl (0.052 mg/kg) in pumpkin, this is below European maximum residues limit (EU MRL) of 0.1 mg/kg, Dimethoate was found in pumpkin (0.165 mg/kg), spinach (0.103 mg/kg) and sorrel (0.250 mg/kg) all above the EU MRL of 0.05 mg/kg. Dichlofenthion was detected in pumpkin (0.308 mg/kg), pirimiphos methyl was detected in pumpkin and spinach (0.428 mg/kg and 0.149 mg/kg respectively), all these were below the EU MRL of 0.5 mg/kg. Chlorpyrifos was found in spinach (0.230 mg/kg) and sorrel (0.192 mg/kg) only spinach was above the EU MRL of 0.2 mg/kg. The pesticide residue Bromophosethyl was detected in all vegetables, pumpkin leaves (0.501 mg/kg), sorrel (1.571 mg/kg) and spinach (7.981 mg/kg) all above the EU MRL of 0.5 mg/kg. The remaining pesticides detected were all below their EU MRL value; these are Ethion found in spinach (0.167 mg/kg), Methyl Parathion in spinach (0.103 mg/kg) and sorrel (0.335 mg/kg). The levels of some of the organophosphorus pesticide residues found in vegetables were above the maximum residue limits (MRLs) set by the European Union. This calls for laws to regulate the use and circulation of such chemicals. Based on the observation made in these studies, it is proposed that more extensive monitoring investigation covering all vegetables part in Akwanga Nasarawa state be carried out to find the exact position of pesticide residues.
Determination of Organochlorine Pesticide Residues in Pumpkin, Spinach and Sorrel Leaves Grown in Akwanga, Nasarawa State, Nigeria  [PDF]
E. G. Ibrahim, N. Yakubu, L. Nnamonu, J. M. Yakubu
Journal of Environmental Protection (JEP) , 2018, DOI: 10.4236/jep.2018.95031
Abstract: Three green leafy vegetable samples of pumpkin leaves, spinach leaves, and sorrel leaves were collected from a farm in Akwanga and were tested for the presence of residues of organochlorine pesticides. The concentrations of all the pesticide residues in the vegetable samples were determined using GC/MS. Among the organochlorine pesticide p,p’-DDT was detected in pumpkin (0.75 mg/kg), spinach (0.319 mg/kg) and sorrel (0.219 mg/kg). θ-BHC and γ-BHC were detected only in pumpkin leaves (0.359 mg/kg and 0.647 mg/kg respectively). Dieldrin was detected in spinach and sorrel (0.124 mg/kg and 0.053 mg/kg respectively). Endrin was detected in pumpkin (0.732 mg/kg) and Aldrin in sorrel (0.095 mg/kg). All these values were above the maximum residue limit (MRL) value of the pesticides. Endosulfan II was detected in sorrel (0.306 mg/kg) below the MRL. The levels of most of the pesticide residues found in vegetables were above the maximum residue limits (MRLs) that call for laws to regulate the use and circulation of such chemicals. Routine monitoring of pesticide residues in this study area is necessary for the prevention, control and reduction of environmental pollution, to minimize health risks.
Evaluating the Role of Shelterbelt in Vegetation Development in a Semi Arid Zone of Yobe State, Nigeria  [PDF]
Bulus Luka Gadiga, Yakubu Dan
Journal of Geographic Information System (JGIS) , 2015, DOI: 10.4236/jgis.2015.75043
Abstract: This study evaluates the role of shelterbelts on the development and dynamics of vegetation in relation to livelihoods in the study area using geo-information techniques. The study covered the period between 1972 and 2007. The results show that in 1972 vegetation cover in the study area extended over an area of 6955 hectares (i.e.shrubs, grasses and trees) which represents 65% of the area; however there was a decrease in 1986 to an area of 5779 hectares (54%). Despite the establishment of shelterbelt in the area in 1987, the trend did not change. This is obvious in the reduction of vegetation cover between 1986 and 2000 to a total area of 3893 hectares (37%). The vegetation cover further decreased to 2791 hectares (26%) in 2005 and 1659 hectares (16%) in 2007 respectively. The study concludes that the establishment of shelterbelts alone cannot guarantee the success of vegetation cover development in the area without a sustainable plan which recognizes the local communities as critical stakeholders. Thus, variables like population growth and GDP have a role to play in vegetation cover depletion. The study recommends that efforts geared towards enlightenment of the local communities on the need for conservation should be encouraged by Government and Non-Governmental Organisations.
Discriminant analysis of sexual dimorphism in morphological traits of African Muscovy ducks
Yakubu,A.;
Archivos de Zootecnia , 2011,
Abstract: sexual dimorphism was examined in 221 randomly selected adult african muscovy ducks extensively reared in north central nigeria using univariate and multivariate measures of body size and skeletal proportions. the body parameters investigated included body weight, 8 primary linear body measurements [breast circumference (btc), thigh circumference (thc), body length (bdl), bill length (bll), neck length (nkl),foot length (ftl), total leg length (tll) and wing length (wnl)] and 4 morphological indices (massiveness, stockiness, long-leggedness and condition index). the univariate analysis showed male dominance (p<0.05) in all the morphometric measurements, with the exception of stockiness and longleggedness where significantly higher mean values were recorded for females. low, moderate and high positive and negative correlations among the body size and shape characters of the ducks were recorded. the canonical discriminant analysis on body weight and primary linear body measurements revealed that wing length was the most discriminating variable between the sexes, followed by body weight, neck circumference, total leg length, body length and foot length respectively. three other variables not qualified to enter the model were expunged. the single discriminant function obtained (d= -3.116 + 0.280wnl+ 0.921bwt + 0.191nkl - 0.196tll 0.063bdl - 0.283ftl) correctly classified 91.4% of individuals of known-sex ducks. this might aid in ecological studies, conservation and improvement of the indigenous ducks.
Towards Content Development For Institutional Digital Repository
F Yakubu
Information Manager (The) , 2009,
Abstract: The growth in Information and Communication Technology has lead to the emergence of Institutional Digital Repository, a digital archive for the preservation and dissemination of institutional research outputs. Institutional Digital Repositories make possible global dissemination of research outputs through the use of the Internet. This paper discusses the concept of IDR, types, content, content development and highlighted the benefits of submitting electronic research work to IDR stakeholder to store, preserve and disseminate research work generated within an institution.
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