Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1759
O. J. Adeosun, O. Shobayo, O. Dairo, A. Aderinlewo, I. A. Ola
The study assessed the waste management practices adopted by farmers in some rural communities around Abeokuta in Ogun State, Nigeria. Seven research questions were raised and answered, using a total of 40 structured questionnaires. The questionnaires were administered, with personal communi-cation, to individual farmers in order to gather pieces of information from farm establishments in the study area. Farms of one hectare of land and above were sampled. The study revealed the methods of waste management practiced in the area to include incineration (80.0%), “re-use†(40.0%), waste contractors (27.5%), burying and tipping (15%), storage (12.5%), “take back by suppliers†(7.5%) and others (7.5%). the choice of waste management methods adopted by the farmers was found to be dependent on cheapness (32.5%), common practice around (14.0%), suitability (11.0%) and others (2.5%). The level of awareness of waste regulatory bodies was relatively low (35.0%) in the rural areas.
{"title":"ASSESSMENT OF WASTE MANAGEMENT PRACTICES ON FARMS IN ABEOKUTA ENVIRON, OGUN STATE NIGERIA","authors":"O. J. Adeosun, O. Shobayo, O. Dairo, A. Aderinlewo, I. A. Ola","doi":"10.51406/jnset.v14i2.1759","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1759","url":null,"abstract":"The study assessed the waste management practices adopted by farmers in some rural communities around Abeokuta in Ogun State, Nigeria. Seven research questions were raised and answered, using a total of 40 structured questionnaires. The questionnaires were administered, with personal communi-cation, to individual farmers in order to gather pieces of information from farm establishments in the study area. Farms of one hectare of land and above were sampled. The study revealed the methods of waste management practiced in the area to include incineration (80.0%), “re-use†(40.0%), waste contractors (27.5%), burying and tipping (15%), storage (12.5%), “take back by suppliers†(7.5%) and others (7.5%). the choice of waste management methods adopted by the farmers was found to be dependent on cheapness (32.5%), common practice around (14.0%), suitability (11.0%) and others (2.5%). The level of awareness of waste regulatory bodies was relatively low (35.0%) in the rural areas.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131395955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1755
A. Arowosegbe, D. Ojo, O. Shittu, I. Dedeke
Neonatal sepsis, a bacterial infection of blood in the first month of life is a common cause of morbidity and mortality in developing countries and factors associated with positive blood culture and perinatal deaths among neonates are rarely described. This study was conducted at the Special Baby Care Unit of Federal Medical Centre, Abeokuta (FMCA), Southwest Nigeria, to identify the predictors of positive blood culture and deaths due to neonatal sepsis among neonates admitted with clinical diagnosis of septicemia between January and April 2013. Data on socio-demographic characteristics, peripatal events and clinical characteristics of neonates were collected on proforma designed for the study. Blood culture was done on Brain Heart Infusion broth and Thioglycolate broth followed by identification of isolates using conventional methods. Serum Procalcitonin (PCT) and Serum C reactive protein (CRP) Levels were determined by immunochromatographic and immuno-turnidimetric assay respec-tively. The neonates were monitored until discharge from the hospital. Among 180 neonates admitted during the study period, there were 85 cases of clinically suspected sepsis. Forty (47.1%) were males and 45(52.9%) were females while 55 (63.5%) neonates and 30 (36.5%) neonates presented with early and late onset sepsis respectively. Positive blood culture was found in 19 (22.4%) of the neo-nates; 14 (73.7%) of neonates with positive blood cultures had early onset neonatal sepsis and 5 (26.3%) had late onset sepsis. Factors that predicted positive blood culture in both early and late onset neonatal sepsis were mode of delivery (p=0.033), estimated gestational age (p=0.039), and CRP (p=0.000). None of the clinical characteristics was found to be statistically significant with positive blood culture. Deaths occurred in 27 (36%) of neonates. The case-fatality rate was 29%. Predictors of death were booking status (p=0.011), birth after prolonged labour (p=0.014), place of delivery (p=0.001), place of antenatal care (p=0.021), respiratory distress (p=0.034), poor cry (p=0.040), con-vulsion (p=0.011) and PCT (p=0.001). Our findings suggest that mode of delivery and estimated ges-tational age are significantly associated with positive blood culture in both early and late onset neona-tal sepsis. Mortality from neonatal sepsis is high in this study. Booking status, place of delivery, place of antenatal care significantly contributed to mortality suggesting that antenatal and perinatal care remains associated with neonatal mortality.
{"title":"PREDICTORS OF POSITIVE BLOOD CULTURE AND DEATH AMONG NEONATES WITH SUSPECTED NEONATAL SEPSIS IN ABEOKUTA, SOUTH-WEST NIGERIA","authors":"A. Arowosegbe, D. Ojo, O. Shittu, I. Dedeke","doi":"10.51406/jnset.v14i2.1755","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1755","url":null,"abstract":"Neonatal sepsis, a bacterial infection of blood in the first month of life is a common cause of morbidity and mortality in developing countries and factors associated with positive blood culture and perinatal deaths among neonates are rarely described. This study was conducted at the Special Baby Care Unit of Federal Medical Centre, Abeokuta (FMCA), Southwest Nigeria, to identify the predictors of positive blood culture and deaths due to neonatal sepsis among neonates admitted with clinical diagnosis of septicemia between January and April 2013. Data on socio-demographic characteristics, peripatal events and clinical characteristics of neonates were collected on proforma designed for the study. Blood culture was done on Brain Heart Infusion broth and Thioglycolate broth followed by identification of isolates using conventional methods. Serum Procalcitonin (PCT) and Serum C reactive protein (CRP) Levels were determined by immunochromatographic and immuno-turnidimetric assay respec-tively. The neonates were monitored until discharge from the hospital. Among 180 neonates admitted during the study period, there were 85 cases of clinically suspected sepsis. Forty (47.1%) were males and 45(52.9%) were females while 55 (63.5%) neonates and 30 (36.5%) neonates presented with early and late onset sepsis respectively. Positive blood culture was found in 19 (22.4%) of the neo-nates; 14 (73.7%) of neonates with positive blood cultures had early onset neonatal sepsis and 5 (26.3%) had late onset sepsis. Factors that predicted positive blood culture in both early and late onset neonatal sepsis were mode of delivery (p=0.033), estimated gestational age (p=0.039), and CRP (p=0.000). None of the clinical characteristics was found to be statistically significant with positive blood culture. Deaths occurred in 27 (36%) of neonates. The case-fatality rate was 29%. Predictors of death were booking status (p=0.011), birth after prolonged labour (p=0.014), place of delivery (p=0.001), place of antenatal care (p=0.021), respiratory distress (p=0.034), poor cry (p=0.040), con-vulsion (p=0.011) and PCT (p=0.001). Our findings suggest that mode of delivery and estimated ges-tational age are significantly associated with positive blood culture in both early and late onset neona-tal sepsis. Mortality from neonatal sepsis is high in this study. Booking status, place of delivery, place of antenatal care significantly contributed to mortality suggesting that antenatal and perinatal care remains associated with neonatal mortality.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122975920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1757
C. Akachuku, V. P. Tombere
The study examined the effect of polluted soil on early growth performance of Pentaclethra macro-phlylla. The objectives of the study were to determine the heavy metal content of the soil and the effect on the growth of this species. Soil samples were collected from an abandoned Sunshine battery facto-ry in Essien Udim Local Government Area of Akwa Ibom State using soil auger. The samples, collect-ed at different soil depths and at various distances, were divided into two parts. A part was analysed in the laboratory to determine the heavy metal content of the soil using digestion and atomic absorption methods, while the other part was used in raising Pentaclethra macrophyla seedlings in polypots. The result of analysis of variance of the soil samples considering the distances showed significant differ-ence in the distribution of copper and lead only (P<0.05), while no significant difference occurred among the concentrations of all the heavy metals at different soil depths. The ranges of concentration of metals in the polluted soil samples in mg/kg were Zn (13.90-41.30), Bo (11.40-27.10), Cd (61.10-77.10), Cu (5.35-49.75), Pb (53.10-153.70), As (0.40-4.50) and Se (1.80-4.30), while the control rec-orded the least amount of Pb (2.40-4.30 mg/kg). On the average, seedlings raised in soils collected from the point of waste disposal (epicentre) had the least growth values in terms of total leaf number (166), stem height (21.90cm), branch number (1.4) and branchlet number (8.8). This signifies stunted growth, which is likely due to the high concentrations of Pb and Cu. Factories should therefore be compelled to eliminate heavy metals before disposing their waste into the environment.
{"title":"GROWTH PERFORMANCE OF Penthaclethra macrophylla Benth. AS AFFECTED BY BY-PRODUCTS FROM BATTERY FACTORY IN AKWA IBOM STATE, NIGERIA","authors":"C. Akachuku, V. P. Tombere","doi":"10.51406/jnset.v14i2.1757","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1757","url":null,"abstract":"The study examined the effect of polluted soil on early growth performance of Pentaclethra macro-phlylla. The objectives of the study were to determine the heavy metal content of the soil and the effect on the growth of this species. Soil samples were collected from an abandoned Sunshine battery facto-ry in Essien Udim Local Government Area of Akwa Ibom State using soil auger. The samples, collect-ed at different soil depths and at various distances, were divided into two parts. A part was analysed in the laboratory to determine the heavy metal content of the soil using digestion and atomic absorption methods, while the other part was used in raising Pentaclethra macrophyla seedlings in polypots. The result of analysis of variance of the soil samples considering the distances showed significant differ-ence in the distribution of copper and lead only (P<0.05), while no significant difference occurred among the concentrations of all the heavy metals at different soil depths. The ranges of concentration of metals in the polluted soil samples in mg/kg were Zn (13.90-41.30), Bo (11.40-27.10), Cd (61.10-77.10), Cu (5.35-49.75), Pb (53.10-153.70), As (0.40-4.50) and Se (1.80-4.30), while the control rec-orded the least amount of Pb (2.40-4.30 mg/kg). On the average, seedlings raised in soils collected from the point of waste disposal (epicentre) had the least growth values in terms of total leaf number (166), stem height (21.90cm), branch number (1.4) and branchlet number (8.8). This signifies stunted growth, which is likely due to the high concentrations of Pb and Cu. Factories should therefore be compelled to eliminate heavy metals before disposing their waste into the environment.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122898741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1750
I. Okeyode, N. Jibiri, R. Bello
This work was aimed at generating a model using least square approximation technique to predict values of activity concentrations of 226Ra in any location along Ogun river in Nigeria using experimental data. Sediment samples were collected in thirty two locations along the river of about 400 km in length. NaI(Tl) gamma-ray spectrometer system was used to obtain activity concentrations of 226Ra.The aver-age value of activity concentration of 226Ra in the sediment samples from the upper region through the middle to the lower region of the river was found to be 12.65 ± 3.48 Bq/kg, having values ranging from 5.57 ± 2.36 Bq/kg (at Ekerin) to 20.40 ± 4.52 Bq/kg (at Sokori). From this work, it was observed that the generated model and experimental data could be used to predict values of activity concentrations of 226Ra in any location along the river once the latitude and longitude (position) are known. Statistical tests on the model also showed that there were no significant differences between the experimental and predicted data of 226Ra and that 98.70% of the experimental data were predicted by the model.
{"title":"MODELLING OF 226Ra ACTIVITY CONCENTRATIONS ALONG OGUN RIVER, SOUTH WESTERN NIGERIA","authors":"I. Okeyode, N. Jibiri, R. Bello","doi":"10.51406/jnset.v14i2.1750","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1750","url":null,"abstract":"This work was aimed at generating a model using least square approximation technique to predict values of activity concentrations of 226Ra in any location along Ogun river in Nigeria using experimental data. Sediment samples were collected in thirty two locations along the river of about 400 km in length. NaI(Tl) gamma-ray spectrometer system was used to obtain activity concentrations of 226Ra.The aver-age value of activity concentration of 226Ra in the sediment samples from the upper region through the middle to the lower region of the river was found to be 12.65 ± 3.48 Bq/kg, having values ranging from 5.57 ± 2.36 Bq/kg (at Ekerin) to 20.40 ± 4.52 Bq/kg (at Sokori). From this work, it was observed that the generated model and experimental data could be used to predict values of activity concentrations of 226Ra in any location along the river once the latitude and longitude (position) are known. Statistical tests on the model also showed that there were no significant differences between the experimental and predicted data of 226Ra and that 98.70% of the experimental data were predicted by the model.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126071082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1761
O. M. Adesusi, O. Adetunji, A. F. Adekoya, S. Adejuyigbe, S. O. Ipadeola
A Knowledge-Based Expert System (KBES) which will aid diagnosis of plant faults within Silicate Glass Plant domain was developed. Knowledge was elicited using a combination of techniques (protocol-generation, teach and teach back, protocol analysis techniques) and root cause failure analy-sis was used to identify primary cause of fault as they were presented by the domain experts. The elicited knowledge were structured and coded in form of rules using C Language Integrated Produc-tion System „CLIPS SHELL‟. The KBES developed comprised a main system and four sub-systems with utility files. Performance evaluation was carried out on the KBES for consistency and exactness. Field tests were conducted and the data acquired were analyzed using some maintenance parame-ters. Results obtained when the KBES was used in the plant‟s faults diagnosis compared with when it was not used showed that with expert system in use, an average reduction in plant downtime of 36.62% was obtained for field test carried out. Also, 24.28% and 34.03% were obtained for average increase in Plant Availability and Total Plant Maintenance Productivity respectively.
{"title":"A KNOWLEDGE-BASED EXPERT SYSTEM FOR SILICATE GLASS PLANT MAINTENANCE","authors":"O. M. Adesusi, O. Adetunji, A. F. Adekoya, S. Adejuyigbe, S. O. Ipadeola","doi":"10.51406/jnset.v14i2.1761","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1761","url":null,"abstract":"A Knowledge-Based Expert System (KBES) which will aid diagnosis of plant faults within Silicate Glass Plant domain was developed. Knowledge was elicited using a combination of techniques (protocol-generation, teach and teach back, protocol analysis techniques) and root cause failure analy-sis was used to identify primary cause of fault as they were presented by the domain experts. The elicited knowledge were structured and coded in form of rules using C Language Integrated Produc-tion System „CLIPS SHELL‟. The KBES developed comprised a main system and four sub-systems with utility files. Performance evaluation was carried out on the KBES for consistency and exactness. Field tests were conducted and the data acquired were analyzed using some maintenance parame-ters. Results obtained when the KBES was used in the plant‟s faults diagnosis compared with when it was not used showed that with expert system in use, an average reduction in plant downtime of 36.62% was obtained for field test carried out. Also, 24.28% and 34.03% were obtained for average increase in Plant Availability and Total Plant Maintenance Productivity respectively.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132113529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1754
A. Akintokun, P. Akintokun, A. Oloyede
The study was conducted to evaluate the efficacy of composts extract from cow dung and Chromolae-na odorata in controlling Fusarium oxysporum. Three compost samples were prepared in this study from Siam weed (Chromolaena odorata) and cow dung. Sample A was prepared from Cow dung and siam weed at ratio 100g: 100g, Sample B was prepared from 200g chopped siam weed and sample C contained 200g cow dung. These three samples were composted in plastic drums perforated for aera-tion and each sample were replicated three times. The content in the drums were regularly turned and monitored for 1, 10, 30 and 60 days. The microbiological analysis of the composts were determined using standard procedures. The inhibitory activities of the sterilised compost extracts on the F. ox-ysporum were determined using agar well diffusion method. The bacterial, coliform and fungal loads ranged from 1.50 – 9.0 × 107 cfu/ml, 0.3 – 6.0× 107 cfu/ml and 0.1 – 2.50 × 107 cfu/ml respectively. Inhibitory activities of the compost extracts on F. oxysporum at different days of composting increased with days of composting. The highest zone of inhibition was recorded by extract from compost pre-pared from C. odorata at 60 days of composting, closely followed by extract from compost prepared from mixture of cow dung and C. odorata at 60 days of composting. No antifungal activity was found in all extracts from the 24h-composts. Highest disease severity was recorded in extract of 24 h and on control. All extract at 60 days of fermentation were healthy The study therefore revealed the potentials of extracts from Chromolaena odorata and cow dung for the inhibition of Fusarium oxysporum of many crops.
{"title":"INHIBITION OF Fusarium oxysporum Pathogenic Fungus USING COMPOST EXTRACT FROM Chromolaena odorata (SIAM WEED) AND COW DUNG","authors":"A. Akintokun, P. Akintokun, A. Oloyede","doi":"10.51406/jnset.v14i2.1754","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1754","url":null,"abstract":"The study was conducted to evaluate the efficacy of composts extract from cow dung and Chromolae-na odorata in controlling Fusarium oxysporum. Three compost samples were prepared in this study from Siam weed (Chromolaena odorata) and cow dung. Sample A was prepared from Cow dung and siam weed at ratio 100g: 100g, Sample B was prepared from 200g chopped siam weed and sample C contained 200g cow dung. These three samples were composted in plastic drums perforated for aera-tion and each sample were replicated three times. The content in the drums were regularly turned and monitored for 1, 10, 30 and 60 days. The microbiological analysis of the composts were determined using standard procedures. The inhibitory activities of the sterilised compost extracts on the F. ox-ysporum were determined using agar well diffusion method. The bacterial, coliform and fungal loads ranged from 1.50 – 9.0 × 107 cfu/ml, 0.3 – 6.0× 107 cfu/ml and 0.1 – 2.50 × 107 cfu/ml respectively. Inhibitory activities of the compost extracts on F. oxysporum at different days of composting increased with days of composting. The highest zone of inhibition was recorded by extract from compost pre-pared from C. odorata at 60 days of composting, closely followed by extract from compost prepared from mixture of cow dung and C. odorata at 60 days of composting. No antifungal activity was found in all extracts from the 24h-composts. Highest disease severity was recorded in extract of 24 h and on control. All extract at 60 days of fermentation were healthy The study therefore revealed the potentials of extracts from Chromolaena odorata and cow dung for the inhibition of Fusarium oxysporum of many crops.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129132081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1751
A. A. Alabi, O. Olowofela
Airborne magnetic data covering geographical latitudes of 7000‟N to 7030‟N and longitudes of 3 30′E to 4 00′E within Ibadan area were obtained from Nigeria Geology Survey Agency. The data were ana-lyzed to map the sub surface structure and the source parameters were deduced from the quantitative and qualitative interpretation of magnetic data. The upward continuation technique was used to de-emphasize short – wavelength anomaly while the depth to magnetic sources in the area was deter-mined using local wavenumber technique, the analytic signal was also employed to obtain the depths of the magnetic basement. Analysis involving the local wavenumber, upward continuation and appar-ent magnetic susceptibility techniques significantly improves the interpretation of magnetic data in terms of delineating the geological structure, source parameter and magnetic susceptibility within Iba-dan area.. These depth ranges from 0.607km to 2.48km. The apparent susceptibility map at the cut-off wavelength of 50 m ranges from -0.00012 to 0.00079 which agree with the susceptibility value of some rock types; granite gneiss, migmatite biotite gneiss, biotite muscovite granite, hornblende granite, quartz and schists. The result of the local wavenumber suggests variation along the profiles in the surface of magnetic basement across the study area.
{"title":"ESTIMATION OF SOURCE PARAMETERS IN IBADAN, SOUTH – WESTERN NIGERIA USING DIGITIZED AEROMAGNETIC DATA","authors":"A. A. Alabi, O. Olowofela","doi":"10.51406/jnset.v14i2.1751","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1751","url":null,"abstract":"Airborne magnetic data covering geographical latitudes of 7000‟N to 7030‟N and longitudes of 3 30′E to 4 00′E within Ibadan area were obtained from Nigeria Geology Survey Agency. The data were ana-lyzed to map the sub surface structure and the source parameters were deduced from the quantitative and qualitative interpretation of magnetic data. The upward continuation technique was used to de-emphasize short – wavelength anomaly while the depth to magnetic sources in the area was deter-mined using local wavenumber technique, the analytic signal was also employed to obtain the depths of the magnetic basement. Analysis involving the local wavenumber, upward continuation and appar-ent magnetic susceptibility techniques significantly improves the interpretation of magnetic data in terms of delineating the geological structure, source parameter and magnetic susceptibility within Iba-dan area.. These depth ranges from 0.607km to 2.48km. The apparent susceptibility map at the cut-off wavelength of 50 m ranges from -0.00012 to 0.00079 which agree with the susceptibility value of some rock types; granite gneiss, migmatite biotite gneiss, biotite muscovite granite, hornblende granite, quartz and schists. The result of the local wavenumber suggests variation along the profiles in the surface of magnetic basement across the study area.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134414223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1758
I. A. Ola, O. Aremu, A. Aderinlewo, E. Ajisegiri, P. Aiyedun, A. O. Ajayi
Development of precision machines to handle some of the field activities involved in the cultivation of cassava is a highly welcomed project among young enterprising farmers who are keen in resolving the posterity of their wellbeing as a big time farmer. Mechanization of cassava in the tropics is grossly hampered by lack of extensive knowlegde on the behaviour, physical properties of cassava stems and parameters that have great influence on the handling of the stems during cultivation, hence the limita-tion of advancing the present semi-automatic planter to fully automated one is still a mirage in the tropics. This paper presents the flow properties of cassava cuttings that can lend it to proper handling in a metering machine. A variable inclined wood surface rig with an ejection outlet was used to study the properties of the stem. Measured cassava stem predictive parameters; diamater, lentgh,weight; angle variation on the rig; response parameters; percentage ejected, percentage sliding through, forces acting on stems were obtained. The results from the study could be used to predict acurately the exact dynamics of a given stem isolated from the bulk of stem cuttings stacked in the metering hopper. Models to predict the flow properties of the stems were obtained; further simulation of the dynamics was embarked upon using MATLAB software. A major transition zone of stem characteris-tics per pecentage sliding to ejection occurred within the range of angles of 150 -300. This might be a favourable angular zone for isolating the stems from the bulk mass while the effectively isolated stems can be metered appropriately by another mechanism in the process of developing a metering device for cassava stem cuttings.
{"title":"SIMULATION OF THE DYNAMICS OF CASSAVA STEM CUTTINGS ON AN INCLINED WOOD SURFACE","authors":"I. A. Ola, O. Aremu, A. Aderinlewo, E. Ajisegiri, P. Aiyedun, A. O. Ajayi","doi":"10.51406/jnset.v14i2.1758","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1758","url":null,"abstract":"Development of precision machines to handle some of the field activities involved in the cultivation of cassava is a highly welcomed project among young enterprising farmers who are keen in resolving the posterity of their wellbeing as a big time farmer. Mechanization of cassava in the tropics is grossly hampered by lack of extensive knowlegde on the behaviour, physical properties of cassava stems and parameters that have great influence on the handling of the stems during cultivation, hence the limita-tion of advancing the present semi-automatic planter to fully automated one is still a mirage in the tropics. This paper presents the flow properties of cassava cuttings that can lend it to proper handling in a metering machine. A variable inclined wood surface rig with an ejection outlet was used to study the properties of the stem. Measured cassava stem predictive parameters; diamater, lentgh,weight; angle variation on the rig; response parameters; percentage ejected, percentage sliding through, forces acting on stems were obtained. The results from the study could be used to predict acurately the exact dynamics of a given stem isolated from the bulk of stem cuttings stacked in the metering hopper. Models to predict the flow properties of the stems were obtained; further simulation of the dynamics was embarked upon using MATLAB software. A major transition zone of stem characteris-tics per pecentage sliding to ejection occurred within the range of angles of 150 -300. This might be a favourable angular zone for isolating the stems from the bulk mass while the effectively isolated stems can be metered appropriately by another mechanism in the process of developing a metering device for cassava stem cuttings.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"78 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120925135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-07-30DOI: 10.51406/jnset.v14i2.1760
I. A. Ola, P. Dada, O. J. Adeosun, S. Ismaila, J. Adewumi, E. Ajisegiri
Handling and removal of harmful waste from our environment is a collective responsibility that all must embrace to make the world a safe habitat. A low cost environmental friendly waste picker was devel-oped. Biometric force evaluation of the end user obtained averaged 469.73 N. The refuse picker was calibrated to obtain the spring constant of 3030.73 N/m. The tool was tested and found to perform well in picking objects of different weights and of regular and irregular shapes ranging from 0.12 g to 2.72 kg. Serrated jaw enhanced the picking performance of the unit whilst picking a circular object without slipping off. The maximum safe horizontal and vertical loading recommended for the tool at picking was 0.5 kg. The picker was used to pick the smallest item, a pin of diameter 0.70 mm and weight of 0.12 g successfully. This tool can be very handy in the hospital where harmful waste such as needles, syringes and other unhealthy substances and waste must be removed from the environment. The tool was made from low cost materials with 40% less than the existing ones.
{"title":"DEVELOPMENT OF AN INDIGENOUS ENVIRONMENTAL FRIENDLY REFUSE PICKER","authors":"I. A. Ola, P. Dada, O. J. Adeosun, S. Ismaila, J. Adewumi, E. Ajisegiri","doi":"10.51406/jnset.v14i2.1760","DOIUrl":"https://doi.org/10.51406/jnset.v14i2.1760","url":null,"abstract":"Handling and removal of harmful waste from our environment is a collective responsibility that all must embrace to make the world a safe habitat. A low cost environmental friendly waste picker was devel-oped. Biometric force evaluation of the end user obtained averaged 469.73 N. The refuse picker was calibrated to obtain the spring constant of 3030.73 N/m. The tool was tested and found to perform well in picking objects of different weights and of regular and irregular shapes ranging from 0.12 g to 2.72 kg. Serrated jaw enhanced the picking performance of the unit whilst picking a circular object without slipping off. The maximum safe horizontal and vertical loading recommended for the tool at picking was 0.5 kg. The picker was used to pick the smallest item, a pin of diameter 0.70 mm and weight of 0.12 g successfully. This tool can be very handy in the hospital where harmful waste such as needles, syringes and other unhealthy substances and waste must be removed from the environment. The tool was made from low cost materials with 40% less than the existing ones.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121200214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-22DOI: 10.51406/JNSET.V15I2.1671
S. Onashoga, O. Oyeleke, O. Ojesanmi, A. Agboola
Transmission of information via unsecured channel requires confidentiality, authorization and authentication as part of major factors that must be put into consideration. This work proposes a scheme that can take care of these major factors at once. The method involves a multi-level approach that comprises of a key exchange protocol, a message authentication code, a key derivation function and a symmetric encryption known as polyalphabetic substitution that makes use of a 94x94 Vigenere table. The four cryptographic techniques are combined to form an encryption protocol, coined MLES for a message to be securely transmitted. In order to test the functionality of MLES scheme, it was implemented using Java 1.8.0 and tested on a text data. The result shows a feasible protocol that can secure a message in steganography.
{"title":"A SECURED EMBEDDED SCHEME BASED ON MULTI-CRYPTOGRAPHIC PROTOCOLS","authors":"S. Onashoga, O. Oyeleke, O. Ojesanmi, A. Agboola","doi":"10.51406/JNSET.V15I2.1671","DOIUrl":"https://doi.org/10.51406/JNSET.V15I2.1671","url":null,"abstract":"Transmission of information via unsecured channel requires confidentiality, authorization and authentication as part of major factors that must be put into consideration. This work proposes a scheme that can take care of these major factors at once. The method involves a multi-level approach that comprises of a key exchange protocol, a message authentication code, a key derivation function and a symmetric encryption known as polyalphabetic substitution that makes use of a 94x94 Vigenere table. The four cryptographic techniques are combined to form an encryption protocol, coined MLES for a message to be securely transmitted. In order to test the functionality of MLES scheme, it was implemented using Java 1.8.0 and tested on a text data. The result shows a feasible protocol that can secure a message in steganography.","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122147483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：