Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 73 )

2018 ( 108 )

2017 ( 116 )

2016 ( 159 )

Custom range...

Search Results: 1 - 10 of 33300 matches for " John Jiya Musa "
All listed articles are free for downloading (OA Articles)
Page 1 /33300
Display every page Item
Evaluation of the Lubricating Properties of Palm Oil
John Jiya MUSA
Leonardo Electronic Journal of Practices and Technologies , 2010,
Abstract: There has been an increase in effort to reduce the reliance on petroleum fuels for energy generation and transportation throughout the world. Among the proposed alternative fuels is biodiesel. Over the years, a little attention was paid to the industrial use of palm oil. Laboratory tests such as viscosity, fire point, flash point, pour point and densities were conducted on raw palm oil and bleached palm oil using standard procedures. The flash points of palm oil and the bleached sample are 250 and 301°C while their fire points are 260 and 308°C while the flash and fire points of the SAE 40 and SAE 30 are 260/300(°C) and 243/290(°C) respectively. It was discovered that palm oil has a better prospect as lubricating oil if necessary improvements are made.
Soil Salinity and Water Logging Problem Due to Irrigation and Drainage: A Case Study of Chanchaga Irrigation Project
Ogbonnaya Chukwu,John Jiya Musa
Agricultural Journal , 2013,
Abstract: In the arid region, drainage ditches are necessary to remove water required for leaching undesirable salts from the soil and the disposal of excess rainfall. Chemical and organic changes in soil conditions are anticipated under irrigation. Several methods are used to irrigate farm lands throughout, the world but the method used in this study area is, the surface irrigation method. Sterilized bottle containers were used to collect water and soil samples from the study area. The samples were given a pre-treatment of being stored in an air conditioned room with temperature not more than 25 C to reduce microbial activities. The 5 samples had a constant chloride ion (Cl-) of 20 mg L 1, Sodium Chloride (NaCl) of 32.8 mg L 1, iron (Fe+2) of 0.7 mg L 1 and pH of 7. The pH of the water samples was found to be within the borderline, which implies that the water used for irrigation in the study area was neither acidic nor alkaline.
Conditional Heteroscedasticity in Streamflow Process: Paradox or Reality?  [PDF]
Martins Yusuf Otache, Isiguzo Edwin Ahaneku, Abubakar Sadeeq Mohammed, John Jiya Musa
Open Journal of Modern Hydrology (OJMH) , 2012, DOI: 10.4236/ojmh.2012.24010
Abstract: The various physical mechanisms governing the dynamics of streamflow processes act on a seemingly wide range of temporal and spatial scales; almost all the mechanisms involved present some degree of nonlinearity. Against the backdrop of these issues, in this paper, attempt was made to critically look at the subject of Autoregressive Conditional Heteroscedasticity (ARCH) or volatility of streamflow processes, a form of nonlinear phenomena. Towards this end, streamflow data (both daily and monthly) of the River Benue, Nigeria were used for the study. Results obtained from the analyses indicate that the existence of conditional heteroscedasticity in streamflow processes is no paradox. Too, ARCH effect is caused by seasonal variation in the variance for monthly flows and could partly explain same in the daily streamflow. It was also evident that the traditional seasonal Autoregressive Moving Average (ARMA) models are inadequate in describing ARCH effect in daily streamflow process though, robust for monthly streamflow; and can be removed if proper deseasonalisation pre-processing was done. Considering the findings, the potential for a hybrid Autoregressive Moving Average (ARMA) and Generalised Autoregressive Conditional Heteroscedasticity (GARCH)type models should be further explored and probably embraced for modelling daily streamflow regime in view of the relevance of statistical modelling in hydrology.
Journal of Applied Sciences in Environmental Sanitation , 2011,
Abstract: Post-harvest waste generations in selected local government areas of Niger state, North central Nigeria was evaluated. This is with a view to knowing the types, quantity and strength of these resides. The method adopted was investigative approach. Questionnaire was administered and results collected. From the study, maize, groundnut and rice are being produced in large quantity in the place visited. Average grain-straw ratio for maize was 1.34:1, grain-straw husk ratio for rice was 1.28:1 while nut to shell ratio for groundnut was 3.07:1. For maize alone in twelve local governments, 3,423 tonnes of waste is produced, 3,481 tonnes for Rice and 1,742 tonnes of groundnut waste is produced. The major management measure adopted now is burning which is not environmentally friendly. The results gotten from the study can be used to design waste management plants for these local governments.
Adebayo, Segun Emmanuel,Orhevba, Bosede Adelola,Adeoye, Peter Aderemi,Musa, John Jiya
Academic Research International , 2012,
Abstract: African Star Apple (Chrysophyllum albidum) is one fruit of great economic value in tropical Africa due to its diverse industrial, medicinal and food uses. Its seeds have also been found tohave a number of beneficial uses. In this study, oil was extracted from the seeds of Chrysophyllum albidum using normal hexane as extracting solvent. The extraction was carried out at a temperature of 650C at 3 – 4 hours extraction time. Solvent extraction isknown to be the best method of extracting oil from low oil bearing seeds. The method used is aimed at determining the percentage oil yield. At a range of 3 - 4 hours extraction time and atemperature of 650C, the average oil yield obtained was 10.71%. The characterization was conducted to determine the physical and chemical properties of the extracted oil shows that the oil was deep red in colour, liquid at 280C with a characteristics smell, density of 0.89kg/m3, solidification temperature of -20C, boiling point of 620C, saponification value of 177.30 mg/KOH/gram, acid value of 5.20% free fatty acid value of 2.60%, peroxide value of 1.65 meq/kg, refractive index of 1.4672 at 31.20C. These results suggest that Chrysophyllumalbidum seeds may be a viable source of oil going by its oil yield. Furthermore, the studied characteristics of the oil extracted shows hat it may be used for many domestic and industrial purposes in Nigeria.
Statistical Variation of Physico-Chemical Properties of Shallow Wells Used for Agricultural Activities in an Agrarian Community, North Central Nigeria  [PDF]
John Jiya Musa, Martins Yusuf Otache, Elijah TsadoMusa, Michael Eneojo Omale, Ibrahim Ibrahim Yahuza Yerima
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105683
Water quality is gradually falling due to human activities, thus making clean water for both domestic and agricultural activities scarce. Population growth is expected to directly or indirectly move up from its current status by about 55%, thus increasing water stress or severe water scarcity over the next generation. This study is aimed at statistically ascertaining and determining the physico-chemical properties of some hand-dug wells in Niykangbe, an agrarian community in Nigeria. A total of twenty five samples were collected for each year during the dry season for a period of three years. Replicate samples were collected on monthly bases for a period of five months during the years 2014, 2015 and 2016. The results obtained indicated that aluminum, cyanide and manganese were not present in the water samples. The pH ranged between 7.10 and 7.70, electric conductivity ranged between 157 and 467 μs/cm and the temperature ranged between 30℃ and 33℃. The nitrate content ranged between 5.00 and 67.30 mg/l while nitrite ranged between 0.02 and 0.09 mg/l. The analysis should be that most of the parameters were still within the recommended standards of NSDWQ and WHO. It was concluded that intermittent test is carried out to ascertain the level of fitness of the various water samples for both domestic and agricultural use.
Impacts of Derived Tin Mining Activities on Landuse/Landcover in Bukuru, Plateau State, Nigeria
Jiya Solomon Ndace,Musa Haruna Danladi
Journal of Sustainable Development , 2012, DOI: 10.5539/jsd.v5n5p90
Abstract: Tin mining activity which was a predominant activity around the Jos Plateau has caused considerable erosion damages to landuse/landcover. Uncontrolled effects through monitored activities do not protect future environmental security. This paper therefore, assesses impact of derived mining activities on landuse/ landcover in Bukuru area in Jos south of Nigeria to determine the extent of degraded mine lands. A time series analysis of Landsat MSS satellite image November 1975, Landsat TM satellite image acquired in 1989, and Landsat ETM acquired October 2005 of the study area were used. Landuse/ landcover were classified from the images using a hybrid manual and spectral based approach. The result shows that out of the 1,574.13sq.km total size of the study area, the degraded area/land, Built-up area, and water bodies increased by 24.58%, 18.51% and 7.57% respectively. Whereas Arable land (farm and grazing land) and forest reserve has decreased by 106.60sq.km (14.16%), and 264.89sq. (35.18%) respectively. It was recommended that comprehensive mitigation studies against these damages should be performed, and regular inspections should be executed to keep these activities of tin mining under control. Modern technologies should be used to obtain more effective results from these studies.
An Assessment of Mining Activities Impact on Vegetation in Bukuru Jos Plateau State Nigeria Using Normalized Differential Vegetation Index (NDVI)
Musa Haruna D.,Jiya Solomon N.
Journal of Sustainable Development , 2011, DOI: 10.5539/jsd.v4n6p150
Abstract: The study area has a pathetic and deplorable condition of landuse/ landcover. The vegetal cover in the area has to be removed from the activities of tin mining which consequently resulted into adverse environmental effect such as erosion. Different forms of human induced stress such as tin mining and heavy rainfall have severely degraded soils on the Jos Plateau. Such degradation problems are also caused by deforestation, inappropriate farming system, bush burning and over-grazing which are hostile to the environment. The impact of tin mining has greatly affected the natural ecology of the study area Bukuru. Micro and macro organisms and plants have been stripped off their natural habitat due to tin mining activities. This paper therefore, assesses the mining activities impact on the vegetation in Bukuru area of Jos plateau in Nigeria. Normalized Differential Vegetation Index (NDVI) techniques was adopted to Maps effect of tin mining on the vegetation for the period between 1975 and 2007 using LandSat satellite data. The result of the differential vegetation index analysis reveals a decline in vegetated surfaces in 1986 ranging from 0.04 to 0.58 indicating 0.05 and continuous loss in vegetation over the study area in 2007 (vegetated surface decrease by 0.08 between 1986 and 2007). The decrease in vegetated surface is due to intensive mining and cultivation.
Performance Analysis of Collision Avoidance MAC Protocol in Multi-hop Wireless Ad-hoc Network
I. Mustapha,J. D. Jiya,B. U. Musa,J. Usman
International Journal of Network and Mobile Technologies , 2011,
Abstract: Performance analysis of 802.11Medium Access Control (MAC) protocol has been carried out either by means of simulation or by means of analytical models with simplified back-off rule assumptions. BinaryExponential Back-off (BEB) is the widely used back-off mechanism in many contention-based IEEE 802.11 MAC protocols for its simplicity and good performance, but it has drawbacks especially in multi-hop ad hocnetwork and some new back-off schemes such as Multiplicative Increase and Linear Decrease (MILD) and Double Increment Double Decrement (DIDD) were proposed. This paper, investigate the performance ofcollision avoidance MAC protocol in multi-hop wireless ad-hoc network by adopting MILD back-off mechanism. A three state Markov chain is used to model the channel states and node states. These models were used to derive the duration time, steady-state probabilities of the states of node and throughput of Mobile Ad-hoc NETwork (MANET). Simulation results show no matter the value of average number of neighbors,transmission range , and length of DATA frames , the throughput of MANET always achieves the maximum value at some point of persistent probability and also the throughput of a MANETs increases with increase in persistent probability which is influenced by the number of neighbors, transmission range and length of DATA frame. On the other hand the throughput decreases with increase in sensing range which is also influenced by the number of neighbors, transmission range and length of DATA frame.
Evaluation of the Lubricating Properties of Palm Kernel Oil
Leonardo Electronic Journal of Practices and Technologies , 2009,
Abstract: The search for renewable energy resources continues to attract attention in recent times as fossil fuels such as petroleum, coal and natural gas, which are been used to meet the energy needs of man are associated with negative environmental impacts such as global warming. Biodiesel offered reduced exhaust emissions, improved biodegradability, reduced toxicity and higher carotene rating which can improve performance and clean up emissions. Standard methods were used to determine the physical and chemical properties of the oil, which includes the Density, Viscosity, flash/fire point, carbon residue, volatility and Specific Gravity were determined by chemical experimental analysis. The flash/fire points of the Heavy duty oil (SAE 40) and Light duty oil (SAE 30) is 260/300(°C) and 243/290(°C) respectively while the pour points of the samples are 22°C for palm kernel oil while 9°C and 21°C for SAE 40and SAE 30 respectively.
Page 1 /33300
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.