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Search Results: 1 - 10 of 286 matches for " Abdullahi Jibrin "
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A Study of Variation in Physiognomic Characteristics of Guinea Savanna Vegetation
Abdullahi Jibrin
Environment and Natural Resources Research (ENRR) , 2013, DOI: 10.5539/enrr.v3n2p52
Abstract: Variation in structural composition of Guinea savannah vegetation was investigated in Kpashimi forest reserve, Niger State, Nigeria. Field work inventory was conducted to determine the current status of the vegetation physiognomic characteristics of the six physiographic units in the study area; comprising of Riparian Forest, Savannah Woodland, Degraded forest Scrubland, Grassland, and Bare surface. Parameters measured include tree density, trunk diameter, basal area, tree density, tree species diversity, tree height, crown cover, shrub cover, and grass cover. The aim of the study is to determine and compare the variation in structural characteristics of the vegetation of the study area. Analysis of variance (ANOVA) showed significant differences amongst virtually all the parameters among the physiographic units. In general, the landscape of the forest reserve has been influenced significantly by anthropogenic disturbance and the resulting landscape vegetation cover is a mixture of natural and human managed mosaics that vary in shape, size, structure and arrangement. Thus, drastic measures need to be taken so as to reverse the trend and to mitigate the far reaching ecological consequences of vegetation degradation as highlighted in this study. Access to UNFCC carbon credit is hereby recommended for the management of the study area.
An Interior Point Method for Solving Semidefinite Programs Using Cutting Planes and Weighted Analytic Centers
John Machacek,Shafiu Jibrin
Journal of Applied Mathematics , 2012, DOI: 10.1155/2012/946893
Abstract: We investigate solving semidefinite programs (SDPs) with an interior point method called SDP-CUT, which utilizes weighted analytic centers and cutting plane constraints. SDP-CUT iteratively refines the feasible region to achieve the optimal solution. The algorithm uses Newton’s method to compute the weighted analytic center. We investigate different stepsize determining techniques. We found that using Newton's method with exact line search is generally the best implementation of the algorithm. We have also compared our algorithm to the SDPT3 method and found that SDP-CUT initially gets into the neighborhood of the optimal solution in less iterations on all our test problems. SDP-CUT also took less iterations to reach optimality on many of the problems. However, SDPT3 required less iterations on most of the test problems and less time on all the problems. Some theoretical properties of the convergence of SDP-CUT are also discussed.
Analysis of Irrigation Water Quality at Kadawa Irrigation Project for Improved Productivity
AR Sanda,Jibrin Dibal
International Journal of Environment , 2014, DOI: 10.3126/ije.v3i3.11082
Abstract: In the face of water scarcity and the several negative consequences, such as water wastage, flooding, water logging, soil losses and production losses, conserving the finite amount of fresh water is a must. The quality of irrigation water must therefore be ascertained. The chemical quality of three sources of irrigation water from canal and drainage water, namely drainage water, fresh irrigation water from canal, and drainage/irrigation water mixture, were analyzed from Kadawa irrigation Project for year 2013 and 2014 cropping seasons, with the view to evaluating the potential risks associated with their use in irrigation and hence their suitability or otherwise for irrigation purposes. The analysis revealed that the use of drainage water alone for irrigation may result in problems associated with salinity, while a blend of drainage/irrigation water in the ratio of 1:1 is a viable means of water conservation and a good means of crop production. DOI: http://dx.doi.org/10.3126/ije.v3i3.11082 International Journal of Environment Vol.3(3) 2014: 235-240
Geological and Geotechnical Assessment of Selected Gully Sites in Wuro Bayare Area NE Nigeria
Gabriel Ike Obiefuna,Jibrin Adamu
Research Journal of Environmental and Earth Sciences , 2012,
Abstract: An assessment of the geological and geotechnical parameters as causative agents in the formation of gullies in Wuro Bayare area of northeastern Nigeria is presented. Field geological study of the study area revealed that the area is underlain by basement rocks. The soils in the area are product of in-situ weathering of the underlying basement rocks. The results of sieve analysis shows that the soils at the gully sites have sorting values ranging between 0.42 and 2.3, coefficient of uniformity values ranging between 0.02 and 200, coefficient of curvature values ranging between 0.0125 and 0.23 and also the constanthydraulic values (Kvalues) is use to know the bottom erosion ranges. These indicate that the soils are poorly to well-sorted in places. The plasticity indices values ranges between 9.9 and 5.5 with a mean value of about 20 indicates soils of moderate to highly plasticity, slight dry strength and easily friable. Values of Maximum Dry Density (MDD) ranging between 2.15 and1.83 g/cm3 at Optimum Moisture Contents (OMC) of between 12.4 and 6.4% reveals that the soils were generally lose. From the geotechnical analysis results, commendations for erosions control such as; construction of drainages, grouting concrete rip-raps and afforestation were suggested.
Psychological effects of parenting children with autism prospective study in Kuwait  [PDF]
Abdullahi Fido, Samira Al Saad
Open Journal of Psychiatry (OJPsych) , 2013, DOI: 10.4236/ojpsych.2013.32A002
Abstract:

Background: Recent reports suggest that the prevalence of autism in the Arab world ranges from 1.4 cases per 10,000 children inOmanto 29 per 10,000 children in theUnited Arab Emirates. While these rates are lower than those of the developed world, which are 39 per 10,000 for autism and 77 per 10,000 for all forms of autism spectrum disorders (ASD), it does not necessarily mean the condition is less prevalent in the Arab world. Objectives: Studies of parents with children with autism suggest that 35% - 53% of mothers with children show various degrees of depressive symptoms. However, many of these studies were conducted in western countries which still make little inferences about the prevalence of these stresses in Arab countries uncertain. No data are available on the use of the BDI on parents of children with autism in Kuwait. The aim of the present study was to evaluate the prevalence of parental depression in families of children with autism and in control families. Subjects and Methods: The participants in this study were 120 mothers and fathers of autistic children whose children were attending the Kuwait Autism Center at the time of this study. They were asked to complete the Arabic translated version of the Beck’s Depression Inventory (BDI). It consists of 21 symptoms or attitudes commonly seen in patients suffering from depression. The symptoms are rated from “0”to “3”in intensity. The following cut-off points of depressive symptoms were used when interpreting the results in the present study: the range of scores from 0 to 9 indicates no depression, 10 - 20 dysphoria and over 20 depression. Results: The mean standard deviation scores for the mothers of autistic children were 21.2 ÷ 2.9 and 10.3 ÷ 2.1, (p = 0.001) for the control mothers respectively. No significant difference were observed across the samples of fathers other than slight increase for the autistic group. Marital status did not affect the number of mothers of the autism groups who had elevated depression scores, but single mothers in both groups had higher elevated depression scores than mothers living with partners, (x2 = 6.4, p < 0.005). Out of mothers with autistic children, 32.3% had depression and 41.5% had dysphoria while, 10% of control mothers had depression and 16% had dysphoria, x2 = 6.3 (p < 0.001). Conclusion: It is clear from our findings that mothers of autistic children have higher parenting-related stress and psychological distress as compared to

Collective Action, and the Problems of Short-Term Government of Somalia  [PDF]
Abdullahi Ali Mohamed, Lihua Yang
Open Journal of Leadership (OJL) , 2015, DOI: 10.4236/ojl.2015.43007
Abstract: Since the end of the Said Barre era in Somalia, the country has been in constant political chaos. Among causes of the problems is a draft constitution with ambiguities in its clauses, power struggle between different political and clan leaders, lack of good leadership to steer the country forward and foreign intervention that at most times leads to problems within the government. Given these problems, the country has been operating in a short-term mode. Some of the problems the short-term government faces are high insecurity mainly because of terrorism, corruption fueled by non-accountability, lack of trust amongst the leaders and politicians and an economic recession. At the center of these problems are the President and the Prime Minister. The paper applies the game theory of collective action to solve the problem between “the President” and “the Prime Minister”.
Assessment of Vegetation Productivity in the Northern Part of Nigeria  [PDF]
Sadiq Abdullahi Yelwa, Umar Usman
American Journal of Climate Change (AJCC) , 2017, DOI: 10.4236/ajcc.2017.62018
Abstract: Climate change is one of the greatest threats facing the global community and has been mainly induced by increasing atmospheric concentrations of greenhouse gases resulting from fossil fuel energy use and change in vegetation cover. This study used modelling techniques to determine how changes in climate could affect vegetation productivity in the northern part of Nigeria. Climatic parameters (Rainfall, Minimum and Maximum Temperatures) as well as coarse Normalised Difference Vegetation Index (NDVI) data for the growing seasons of 1981-2009 were utilised. Because of the relationship between climatic parameters and vegetation, Spatial method of data interpolation was tested. Results from the prediction elevation values ranged from -3e-9 to 2e-9. It was observed from prediction variance map that the values were higher in the upper portion of the study area which comprised Gusau (GS), Jos (JS), Katsina (KT), Minna (MN) and Zaria (ZR) and lower in the middle and lower parts of the study area which comprised mainly Funtua, Kano, Maiduguri and Sokoto. Further studies are encouraged with high resolution imageries and more meteorological data to cover the montane and forest zone of the country to determine the level of climatic impacts particularly on vegetation productivity in general.
The Importance of Neutrophil to Lymphocyte Ratio and Peripheral Blood Eosinophilia in Chronic Obstructive Pulmonary Disease Patients with Acute Exacerbation: Recent Studies  [PDF]
Abdullahi Hassan Abdinur, Yadong Gao
Open Journal of Respiratory Diseases (OJRD) , 2019, DOI: 10.4236/ojrd.2019.92004
Abstract: Chronic obstructive pulmonary disease (COPD) is a chronic, progressive respiratory disease and the third leading cause of respiratory disease mortality. The diagnosis of COPD is changed to acute exacerbation of COPD (AECOPD) when respiratory symptoms become worse, beyond normal day-to-day variations and severely enough that changes in medication are required. Both neutrophils to lymphocyte ratio (NLR) and peripheral blood eosinophilia (PBE) are rapid and relatively inexpensive tests that can be easily applied in the clinical practice for the diagnosis and treatment of AECOPD patients. Furthermore, current studies found that NLR and PBE had a higher accuracy rate than other traditional markers (Leukocyte count and C-reactive protein) for the diagnosis and management of AECOPD. Besides, recent studies determined that NLR and PBE can be used for prediction of future exacerbations in COPD patients. This review aims to explore the current knowledge about the significance of NLR and PBE in AECOPD patients.
Evaluation of models for assessing groundwater vulnerability to pollution in Nigeria
US Abdullahi
Bayero Journal of Pure and Applied Sciences , 2009,
Abstract: This paper examines, based on a review and synthesis of available material, the presently most applied models for groundwater vulnerability assessment mapping. The appraoches and the pros and cons of each method are evaluated in terms of both the conditions of their implementation and the result obtained. The paper further observed that, with the exception of DRASTIC model, most of other models have not been applied to ground water studies in Nigeria, unlike other parts of world where they are widely used. This review therefore brings to limelight the importance of their applicability in groundwater vulnerability mapping in Nigeria.
Incidence and antimicrobial susceptibility pattern of salmonella species in children attending some hospitals in kano metropolis, kano state –Nigeria
M Abdullahi
Bayero Journal of Pure and Applied Sciences , 2010,
Abstract: A study was carried out to investigate the incidence of Salmonella species among 300 children using stool samples from six hospitals in the metropolitan Kano. The organisms were investigated using cultural, serological biochemical characterization and sensitivity to some antimicrobial agents. The incidence of the bacteria was found to be highest among children of 20-24 months age and least in 5-9 months age group. Out of the total samples positive for Salmonella, 24 were from males and 17 from females. The species of Salmonellae isolated comprised of Salmonella typhimurium which was the most predominant followed by Salmonella typhi and Salmonella paratyphi. As at the time of the study, there was significance difference between males and females in the incidence at P> 0.05. Among the antimicrobials used ciprofloxacin was found to be more effective than the others.
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