UMYU Scientifica最新文献_第5页

Determination of Heavy Metals Recovered from Artificially Ripe Banana with Calcium Carbide 电石法测定人工熟香蕉中重金属含量

UMYU Scientifica Pub Date : 2023-02-14 DOI: 10.56919/usci.2123_002

Aliyu, Bashir, Sanusi, Junaidu, Garba Idris Yar’gamji

引用次数: 0

Machine Learning for Predicting Students’ Employability 预测学生就业能力的机器学习

UMYU Scientifica Pub Date : 2023-02-13 DOI: 10.56919/usci.2123_001

Muhammad Hadiza Baffa, Muhammad Abubakar Miyim, Abdullahi Sani Dauda

{"title":"Machine Learning for Predicting Students’ Employability","authors":"Muhammad Hadiza Baffa, Muhammad Abubakar Miyim, Abdullahi Sani Dauda","doi":"10.56919/usci.2123_001","DOIUrl":"https://doi.org/10.56919/usci.2123_001","url":null,"abstract":"Graduates' employability becomes one of the performance indicators for higher educational institutions (HEIs) because the number of graduates produced every year from higher educational institutions continues to grow and as competition to secure good jobs increases, it is significant for HEIs to understand the employability of graduates upon graduation and highlight the reasons. To predict students' employability before graduation, machine learning models were employed. These include logistic regression; decision tree, random forest, and an unsupervised clustering (K-Means) algorithm. This research, therefore, aims to predict the full-time employability of undergraduate students based on academic and experience employability attributes – including cumulative grade point average (CGPA), student industrial work experience scheme (SIWES), co-curricular activities, gender, and union groupings before graduation. Primary datasets of 218 graduate students in the last four academic calendar years (2016 – 2021) from the Computer Science Department of Federal University Dutse were rated. The results demonstrate that Random Forest Classifier predict students employability the best with an accuracy of 98% and f1-score of 0.99 compare to logistic regression and decision tree. Furthermore, using more students’ data with more attributes including academics and extracurricular activities can improve the models performance and predict students’ employability. ","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130029481","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}

引用次数: 0

Estimating Geophysical Parameters Using Petrophysical Algorithm to Enhance Hydrocarbon Recovery in Lokaka Field, Niger Delta, Nigeria 利用岩石物理算法估算地球物理参数提高尼日利亚尼日尔三角洲Lokaka油田油气采收率

UMYU Scientifica Pub Date : 2023-01-24 DOI: 10.56919/usci.1222.003

D. Adepehin, A. I. Odudu, Adediran Oluwaseun Adelayi, S. O. Adikwu, Muhammad Sanni Ahmad, D. O. Alfred

{"title":"Estimating Geophysical Parameters Using Petrophysical Algorithm to Enhance Hydrocarbon Recovery in Lokaka Field, Niger Delta, Nigeria","authors":"D. Adepehin, A. I. Odudu, Adediran Oluwaseun Adelayi, S. O. Adikwu, Muhammad Sanni Ahmad, D. O. Alfred","doi":"10.56919/usci.1222.003","DOIUrl":"https://doi.org/10.56919/usci.1222.003","url":null,"abstract":"Adoption of Enhanced Oil Recovery (EOR) to boost the hydrocarbon saturation (Sh) of reservoirs has caught the interests of many researchers in Geosciences. Evidence from literature shows that both primary and secondary recovery methods have failed to account for about 60% hydrocarbon (HC) that is trapped in the reservoirs and getting to discover large productive new fields has become a herculean task. This study identified the fluid nature and boundaries of reservoirs using some relevant geophysical (petrophysical) parameters and reservoir rocks physical features such as shale volume (Vsh), permeability (K), water and hydrocarbon saturation (Sw& Sh). Petrophysical data were sourced from the data bank of the Department of Geology, Obafemi Awolowo University, Ile-Ife, Nigeria. Analysis of data was done using the PETREL 2010 and OpendTect 4.6.0 versions for quality checking, delineation of identified reservoirs, fluid contacts demarcation and fluid types’ determination. The interpreted data were thereafter loaded into Microsoft Excel environment in order to adopt suitable statistical relations for the estimation of Vsh, K, Sw and Sh. Exploration of about 59.4% HC with NaOH, 64.5% HC with KOH, 69.5% HC with NH4OH and 78.5% HC with LiOH were discovered after the (EOR) flooding process. Comparison of the Vsh, K, Sw and Sh values before EOR with the values after EOR further showed that the reservoirs produced more HC with EOR. This study concluded that more hydrocarbon saturation can be achieved from reservoirs when EOR is carried out.","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131023748","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}

引用次数: 0

Graph Coloring with inversion in the non-Deranged Permutations 非错乱置换中的反转图着色

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.016

Ibrahim Muhammad, Kazeem Olalekan Aremu

引用次数: 0

Determination of Entrance Surface Dose for Patients Undergoing Conventional Chest X-ray Examination at Radiology Department, Federal Teaching Hospital (FTH) Katsina. 卡齐纳联邦教学医院放射科常规胸部x线检查患者入口表面剂量的测定。

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.009

A. Maaruf, Bashir Gide Muhammed, Ahmed Rufai Usman

{"title":"Determination of Entrance Surface Dose for Patients Undergoing Conventional Chest X-ray Examination at Radiology Department, Federal Teaching Hospital (FTH) Katsina.","authors":"A. Maaruf, Bashir Gide Muhammed, Ahmed Rufai Usman","doi":"10.56919/usci.1222.009","DOIUrl":"https://doi.org/10.56919/usci.1222.009","url":null,"abstract":"Concern regarding the radiation doses to patients exposed to x-ray during radiography examination has increased on a global scale. With chest x-ray radiography as the most common performed radiography examination, this study assessed the doses patients undergoing chest x-ray radiography are exposed to, through measurement of ESD (entrance surface dose) exposed at radiology department federal, medical center Katsina, using both direct and indirect methods for the purpose of diagnostic reference levels (DRL). Thermoluminescence (TLD) dosimeter is used for the direct measurements, while Tin and Tsai formula (mathematical equation) and CALDODE_X 5.0 software are used for the indirect measurements. The Entrance Surface Dose (ESD) was found to be; Tin and Tsai: 0.15 mGy (Chest AP), 0.12 mGy (Chest PA), 0.21 mGy (Chest lateral), with CALDODE_X: 0.23 mGy (Chest AP), 0.19 mGy (Chest PA), 0.31 mGy (Chest lateral), and TLD: 0.22 mGy (Chest AP), 0.20 mGy (Chest PA), 0.37 mGy (Chest lateral), and were all below the DRLs recommended by national and international regulatory authorities. The comparison of this study with other international and local reference levels shows that the LDRs from this study were lower than other international and local diagnostic reference levels for the three employed methods and for both projections.","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124700307","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}

引用次数: 0

Assessment of Nickel and Arsenic Poisoning and Estimation of Cancer Risk from Kaolin Mining Sites in Dutsin-Ma and Kankara, Katsina State 卡齐纳州Dutsin-Ma和Kankara高岭土矿区镍和砷中毒评估及癌症风险评估

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.015

A. Sani, Ahmed Rufai Usman, M. Sani

{"title":"Assessment of Nickel and Arsenic Poisoning and Estimation of Cancer Risk from Kaolin Mining Sites in Dutsin-Ma and Kankara, Katsina State","authors":"A. Sani, Ahmed Rufai Usman, M. Sani","doi":"10.56919/usci.1222.015","DOIUrl":"https://doi.org/10.56919/usci.1222.015","url":null,"abstract":"This research was carried out to assess how poisonous are Nickel and Arsenic as heavy metals contaminated around Kankara and Dutsinma Kaolin mining sites. Nine (09) samples were collected randomly from the mining sites for the study. The analysis of such elements was done using Energy Dispersive X-ray Fluorescence {EDXRF} at Central Laboratory, Umaru Musa Yar-adua Universitty, Katsina, and The health hazards were evaluated using numerous Statistical and USEPA models. The result obtained was used to calculate the risk assessment of Nickel and Arsenic in the body via inhalation, ingestion, and body contact. In which the most associated environmental and health risk of priority have Their average concentrations as 20.02, 12.59, 54.03, 1344.4, 21.94, 140.00, and NA which is not identified element in the studied area. All results were below the USEPA threshold limit for non-carcinogenic risks of 1.0 indicating that the exposed population ages are unlikely to experience any adverse non-carcinogenic risks. The overall total excess lifetime cancer risk for heavy metals was 8.5555E-06 (a maximum of 9 people/1 million may be affected) for children and 7.5773E-05 (a maximum of 8 people /1 million may be affected) for adults. These values were within the USEPA threshold of 1E-04.","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125083381","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}

引用次数: 0

Relationships Between pH Buffer Capacity and Selected Soil Properties of an Agrarian area in Samaru, Nigeria 尼日利亚萨马鲁某农业区pH缓冲能力与土壤特性的关系

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.006

Ayodele Owonubi, Chiwendu Kenneth

{"title":"Relationships Between pH Buffer Capacity and Selected Soil Properties of an Agrarian area in Samaru, Nigeria","authors":"Ayodele Owonubi, Chiwendu Kenneth","doi":"10.56919/usci.1222.006","DOIUrl":"https://doi.org/10.56919/usci.1222.006","url":null,"abstract":"The objectives of this research were to investigate the nature of pH buffer capacity and evaluate its association selected soil characteristics the study area. Soil samples from ten profile pits from within the study area were collected from genetic horizons. Soil samples were tested in the laboratory for electrical conductivity and pH buffer capacity using standard procedures. Soil data were analyzed using descriptive statistics. One-way analysis of variance and correlation analysis were applied to determine effects and relationships of selected soil properties with soil pH buffer capacity. The selected soil properties included particle size distribution, electrical conductivity, organic matter, cation exchange capacity and soil pH. Analysis of variance indicated that there were no significant effect of soil depth or drainage condition on distribution of pH buffer capacity in the study area. Correlation analysis indicated a non-significant weak relationship between pH buffer capacity and selected soil properties of the study area. This suggest that multiple interrelated factors could be responsible for the distribution of pH buffer capacity in the study area.","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131886888","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}

引用次数: 0

Assessment of Preventive Strategies Compliance Among HIV/AIDS Patients Attending Federal Teaching Hospital Katsina, Nigeria 尼日利亚卡齐纳联邦教学医院艾滋病毒/艾滋病患者预防策略依从性评估

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.008

Oyewo, Selmat Oluwakemi, Bale, Sheriffdeen Issa, Kawata, Hassan Musa

{"title":"Assessment of Preventive Strategies Compliance Among HIV/AIDS Patients Attending Federal Teaching Hospital Katsina, Nigeria","authors":"Oyewo, Selmat Oluwakemi, Bale, Sheriffdeen Issa, Kawata, Hassan Musa","doi":"10.56919/usci.1222.008","DOIUrl":"https://doi.org/10.56919/usci.1222.008","url":null,"abstract":"A high level of compliance is required to achieve the desired outcomes of treatment among HIV/AIDS patients. There is paucity of information about compliance to preventive strategies in Katsina State of Northern Nigeria. In this study, a questionnaire was developed, validated, and applied to evaluate adherence to prevention strategies in HIV/AIDS patients attending the Federal teaching hospital, Katsina (FTH) in Nigeria using an investigative descriptive study design. The questionnaire was distributed to 303 respondents that were randomly selected out of 1, 250 population of FTH, and all were returned for data analysis. Descriptive statistics, chi-square and t-tests were used to describe the respondent’s demographic information, test the main and sub-hypotheses. Results showed. Results showed significantly higher adherence to prevention strategies among HIV/AIDS patients attending FTH, Katsina (x2 194.55 df 3 p<0.05). HIVAIDS patients attending the FTH, Katsina are subject to guidelines for preventing transmission of HIV/AIDS (x2202.939 df 3 p<0.05). There was also a significant gender-based difference in adherence to prevention strategies among HIV/AIDS patients attending FTH, Katsina (t 25.690 df 301, p value 0.000). Among HIV/AIDS patients attending the FTH, Katsina, there was a significant difference in adherence to prevention strategies based on educational status (t 219.094 df 302, p-value 0.000). Based on location, there was a significant difference in adherence to prevention strategies among HIV/AIDS patients attending the FTH, Katsina (t 23.038 df 301, p-value 0.000). Results from this study shows that HIV/AIDS patients attending Federal Teaching Hospital Katsina significantly adhere to preventive guidelines for curbing the transmission of HIV/AIDS. However to further achieve the desired quality of life improvements for individual subjects and reduce prevalence in the society, concerted efforts are needed to promote compliance to therapy.","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116127002","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}

引用次数: 0

Assessment of Chemical Properties of Soils Derived from Basement Complex Rocks of the Jos Plateau 乔斯高原基底复合岩土壤化学性质评价

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.007

Ayodele Owonubi

{"title":"Assessment of Chemical Properties of Soils Derived from Basement Complex Rocks of the Jos Plateau","authors":"Ayodele Owonubi","doi":"10.56919/usci.1222.007","DOIUrl":"https://doi.org/10.56919/usci.1222.007","url":null,"abstract":"Information on the chemical characteristics of soils is required in the sustainable the management of soil fertility and productivity. The objective of this study was to determine chemical characteristics of basement complex derived soils of the Jos Plateau. Soil study followed the approach in the Soil Survey manual and began by identification of three geologic units: granite gneiss, biotite granite and migmatite. Furthermore, eighteen soil profile pits were dug in each geologic units and eighty-four samples were taken from genetic horizons. Standard laboratory procedures were used to analyze soil samples for pH, organic matter, nitrogen and phosphorus. Results showed that organic matter contents in the soils were generally low and seemed to influence the distribution of nitrogen in the soils. Consequently, contents of total nitrogen were low. Mean contents of pH in the A horizon were 5.15, 4.64 and 5.58 respectively for soils derived from granite gneiss, biotite granite and migmatite. Low pH levels are linked to the basic cations draining out of the profile and the acidic character of the basement complex rocks from which the soils were formed. Soil reaction in most cases indicated that soils had a net negative charge. Available P contents in the magmatic soils was significantly higher than those of other geologic units. Effects of granite gneiss, biotite granite and migmatite parent materials on variation in soil chemical properties were more noticeable for soil reaction and available P contents.","PeriodicalId":235595,"journal":{"name":"UMYU Scientifica","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128295871","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}

引用次数: 0

Comparative Study of Lee Carter and Arch Model in Modelling Female Mortality in Nigeria Lee Carter和Arch模型在尼日利亚女性死亡率模型中的比较研究

UMYU Scientifica Pub Date : 2022-12-30 DOI: 10.56919/usci.1222.012

Aliyu Umar Shelleng, Yahaya Jamil Sule, Jibrin Yahaya Kajuru, Adamu Kabiru

引用次数: 0