Science World Journal最新文献

Assessment of radionuclides content of dumpsites within Kaduna Metropolis 卡杜纳市垃圾场放射性核素含量评估

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.15

T. Sombo, B. Shehu, A. A. Tyovenda, B. Gabi

{"title":"Assessment of radionuclides content of dumpsites within Kaduna Metropolis","authors":"T. Sombo, B. Shehu, A. A. Tyovenda, B. Gabi","doi":"10.4314/swj.v19i1.15","DOIUrl":"https://doi.org/10.4314/swj.v19i1.15","url":null,"abstract":"This study assessed the concentration of radionuclides (Ra-266, Th-232, U-238, and K-40) in selected dumpsites within some Local Government Areas of Kaduna State. Radiological analysis was carried out using a gamma spectrometer (HPGE) located at the Energy Research Center, University of Ibadan, Nigeria. The results of the concentration of Ra-266, Th-232, U-238 and K-40 in the study area were as follows: 196.12 – 239.14 Bq/kg, 126.79 – 171.32 Bq/kg, 84.96 – 115.96 Bq/kg, and 317.11 – 521.77 Bq/kg respectively for Chikun LGA; 213.84 – 268.98 Bq/kg, 102.17 – 122.90 Bq/kg, 110.89 – 137.80 Bq/kg, 407.64 – 486.38 Bq/kg respectively for Igabi LGA; 187.15 – 364.50 Bq/kg, 166.04 – 387.00 Bq/kg, 97.35 – 180.57 Bq/kg, and 541.72 – 801.08 Bq/kg respectively for Kaduna North LGA; and 128.98 – 293.45 Bq/kg, 139.43 – 182.96 Bq/kg, 70.57 – 132.02 Bq/kg and 526.19 – 707.42 Bq/kg respectively for dumpsites in Kaduna South. The results revealed that K-40 had the highest concentration in all the study areas and was found to be above the UNSCEAR (2000) recommended limit of 300 bq/kg. Ra-266, Th-232, and U-238 were found to be 37, 31, and 51 Bq/kg above the UNSCEAR (2000) recommended limits of 35, 30, and 50 Bq/kg, respectively. The annual effective dose was in the range of 1.23–2.30 mSvy^(-1) above the UNSCEAR (2000) recommended safety limit. The radioactivity level in the study areas was high; therefore, continuous exposure to these radionuclides and their progenies may pose a severe risk to public health. All the sampled radionuclides were found to be within the recommended standard of ≤1.0 WHO reference values.","PeriodicalId":21583,"journal":{"name":"Science World Journal","volume":"32 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141022435","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

Analysis of neonates gender and mode of delivery using Pearson’s correlation 利用皮尔逊相关性分析新生儿的性别和分娩方式

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.7

F. Okwonu, N. Ahad, J. S. Apanapudor

引用次数: 0

Green synthesis of copper and iron nanoparticles from extracts of eucalyptus with their antimicrobial activities 从桉树提取物中绿色合成铜和铁纳米颗粒及其抗菌活性

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.39

Shehu Adamu, N. Y. Pindiga, A. Nuhu, Ali Ibrahim, Muhammad Shirama Yakubu

引用次数: 0

Estimation of redox-sensitive metals in Lafarge cement company’s area in Akamkpa Nigeria: Assessment of ecological health risk 估算尼日利亚 Akamkpa 拉法基水泥公司地区的氧化还原敏感金属：生态健康风险评估

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.27

V. Okpashi

{"title":"Estimation of redox-sensitive metals in Lafarge cement company’s area in Akamkpa Nigeria: Assessment of ecological health risk","authors":"V. Okpashi","doi":"10.4314/swj.v19i1.27","DOIUrl":"https://doi.org/10.4314/swj.v19i1.27","url":null,"abstract":"Toxic compounds such as redox-sensitive metals usually contaminate the soil. They are implicated in the causation of oxidative stress, a precursor of human diseases and ecological extinction. Having uncontaminated soil serves as the link between plant and animal health quality, and a sustainable ecosystem. Geological accumulation and spatial distribution of redox-sensitive metals in agricultural land can significantly hinder soil fertility, ecological health, food safety, and food security. This study used the soil samples from farmlands near the Lafarge industrial area at Mfamosing, Akamkpa local government area of Cross River State, Nigeria, to assess eight redox-sensitive metals (Cadmium, Chromium, Copper, Nickel, Lead, Arsenic, Cobalt, and Zinc), their spatial distribution, and geo-accumulation. The redox-sensitive metals were screened with an atomic absorption spectrophotometer connected with mass spectroscopy. A geographic information system (GIS) and ArcMap version 10:8:2 was used to infer the risk of the industrial area regarding geo-accumulation, and spatial distribution of redox-sensitive metals in the farmlands. The result shows Cd, Cr, Cu, Ni, Pb, As, Co and Zn have different concentrations among the samples. Three samples - MS2, MS3, and MS8, had the highest arsenic concentration, while samples Ms1, Ms2, Ms5, and Ms8, had the second-highest concentrations of Cadmium, Lead, and Chromium, respectively. The polluted area was moderately contaminated and distributed with other metals - Cu, Ni, and Co, respectively. Comparing these results with those of non-industrial areas, one can infer that the Lafarge industrial area is more contaminated with redox-sensitive metal. To advance this investigation, some microorganisms within the area can be used to verify a metal-hazard impact on the ecosystem and monitor the rise in redox-sensitive metals to predict the risk.","PeriodicalId":21583,"journal":{"name":"Science World Journal","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141021034","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

Estimation and comparison of Weibull-Normal distribution with some other probability models using Bayesian method of estimation 使用贝叶斯估计法估计和比较 Weibull-Normal 分布与其他一些概率模型

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.12

Suleiman Aliyu, M. A. Bamanga

{"title":"Estimation and comparison of Weibull-Normal distribution with some other probability models using Bayesian method of estimation","authors":"Suleiman Aliyu, M. A. Bamanga","doi":"10.4314/swj.v19i1.12","DOIUrl":"https://doi.org/10.4314/swj.v19i1.12","url":null,"abstract":"In statistical applications the Normal distribution is adjudged to be the best. Recent studies Terna (2017) using classical method indicated that Weibull-Normal distribution outperformed the Normal distribution. In this study we used the non-classical Bayesian method of estimation to estimate and compare the Weibull-Normal distribution with some other distributions including Normal and Gamma-Normal distributions. This study derived explicit expressions for basic statistical properties such as moments, moment generating function, the characteristic function, reliability analysis and the distribution of order statistics. It looks at estimation of confidence intervals for the parameters of the Weibull-Normal distribution and estimated the parameters of the new distribution using a non-classical approach for the purpose of theoretical comparisons. The two other distributions whose parameters were also estimated by using Bayesian estimation are the normal distribution and gamma distribution as well as the combination Gamma-Normal distribution. Based on the analyses and interpretations of the results obtained it was found that the parameters and other general properties of Normal distribution gives a better fit than other distributions. R-software was used; the models were written as an R code in R program using the rjags library, the distribution parameters were obtained from a Gibbs sampling of a Bayesian Fit for data set I and data set II. The criteria used in R for comparisons were the negative log-likelihood, AIC (Akaike information criterion), CAIC (Consistent Akaike Information Criterion) and BIC (Bayesian information Criterion).","PeriodicalId":21583,"journal":{"name":"Science World Journal","volume":"42 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141019347","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

Evaluation of phytochemical, in vitro antibacterial and rate of kill assay of Terminalia avicennioides leaf against some bacteria associated with diarrhoea 针对腹泻相关细菌的植物化学、体外抗菌和杀灭率评估

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.30

F. M. Musa, Z.K. Muhammad-Idris, J. R. Wartu

{"title":"Evaluation of phytochemical, in vitro antibacterial and rate of kill assay of Terminalia avicennioides leaf against some bacteria associated with diarrhoea","authors":"F. M. Musa, Z.K. Muhammad-Idris, J. R. Wartu","doi":"10.4314/swj.v19i1.30","DOIUrl":"https://doi.org/10.4314/swj.v19i1.30","url":null,"abstract":"The study was aimed to evaluate the phytochemical constituents, in vitro antibacterial and rate of kill assay of Terminalia avicennioides leaf extract against some bacteria associated with diarrhoea. The phytochemical constituents of the ethanol of Terminalia avicennioides leaf, aqueous, n- butanol, and ethyl acetate fractions of the leaf extract were determined using standard analytical methods. The antibacterial activities of the leaf extract and extract fractions against clinical isolates of Salmonella Typhimurium and Escherichia coli isolated from diarrhoeaic patients were determined in vitro by agar diffusion, dilution and time - kill methods. The result of phytochemical screening revealed the presence of carbohydrates, cardiac glycosides, saponins, flavonoides, tannins, alkaloids, phenols and triterpenes. The crude extract and extract fractions of T. avicennioides leaf were effective against the test bacterial isolates at varied concentration of extracts but the n-butanol fraction was more effective with Minimum inhibitory and Minimum Bactericidal Concentration of 6.25 and 12.5mg/ml. The clinical isolates of E. coli and S. Typhimurium were completely killed within 180 minutes of exposure to ethanol leaf extract and extract fractions at varied MBCs of 12.5 mg/ml and 25.0 mg/ml. The clinical isolates of E. coli and S. Typhimurium were more susceptible to n-butanol fraction within 120 minutes of exposure to the extract fraction.","PeriodicalId":21583,"journal":{"name":"Science World Journal","volume":"16 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141018774","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

Human papillomavirus 16 specific immunoglobulin g antibodies and its correlates among women attendees of selected hospitals in Southern Kaduna, Kaduna State, Nigeria 尼日利亚卡杜纳州南卡杜纳市部分医院就诊妇女的人类乳头瘤病毒 16 特异性免疫球蛋白 g 抗体及其相关性

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.35

J.M. Banda, L.O. Adama, I.A. Joshua, S.F. Banda, O.J. Okojokwu, G.C. Onyemelukwe

{"title":"Human papillomavirus 16 specific immunoglobulin g antibodies and its correlates among women attendees of selected hospitals in Southern Kaduna, Kaduna State, Nigeria","authors":"J.M. Banda, L.O. Adama, I.A. Joshua, S.F. Banda, O.J. Okojokwu, G.C. Onyemelukwe","doi":"10.4314/swj.v19i1.35","DOIUrl":"https://doi.org/10.4314/swj.v19i1.35","url":null,"abstract":"Human papillomavirus type 16 (HPV-16) is one of the high-risk viruses that cause cervical cancers. Persistent infection with the virus leads to development of precancerous lesions of the cervix in infected women, which without medical intervention can progress to invasive cervical cancer. This study assessed HPV16-specific immunoglobulin G (IgG) antibodies in the serum of women attendees of General Outpatient Department (GOPD) at General Hospital Kafanchan and Kagarko in Kaduna State. This was a cross-sectional study. Structured, self-administered questionnaire was used to collect information and blood samples were also collected for testing. This was in addition to information collected from the laboratory analyzed. Five milliliters (5mls) of blood were aseptically collected from each of the 200 women, who had no history of HPV vaccination at the time of the study for the determination of HPV16-specific IgG antibodies using enzyme-linked immunosorbent assay method. The sero-positivity for HPV 16-specific IgG antibodies among the women was 24.5%. The sero-positivity among women who had their first sexual intercourse at age 13-19 years was 37.6%, and it was significantly different from those who had their sexual debut at ≥20 years (14.8 %) (p=0.001). Sero-positivity also increased from 9.2 % in women with one lifetime sexual partner to 60.0% in those with multiple sexual partners(p=0.001). The finding showed that the women in this study have been exposed to the HPV-16 virus. Further study with a larger population of women in this locality to determine the level of susceptibility or immunity to HPV-16 is strongly advocated, among others.","PeriodicalId":21583,"journal":{"name":"Science World Journal","volume":"6 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141021143","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

The determination of heterogeneous catalytic performance of Palm Oil Fuel Ash (POFA) in the production of biodiesel via transesterification of Jatropha oil 测定棕榈油燃料灰（POFA）在麻风树油酯交换反应生产生物柴油过程中的异相催化性能

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.3

A.R. Uba, H. U. Jamo, U. I. Ismail, F.U. Musa, S.H. Gwadabe

{"title":"The determination of heterogeneous catalytic performance of Palm Oil Fuel Ash (POFA) in the production of biodiesel via transesterification of Jatropha oil","authors":"A.R. Uba, H. U. Jamo, U. I. Ismail, F.U. Musa, S.H. Gwadabe","doi":"10.4314/swj.v19i1.3","DOIUrl":"https://doi.org/10.4314/swj.v19i1.3","url":null,"abstract":"The high energy demand with the negative environmental impacts of using fossil fuel for energy generations raised question on over dependability on it for sustainable economic growth. Biodiesel tend to be one of the renewable alternative solutions towards the above problems. Biodiesel can be produced through various methods such as transesterification, micro emulsion and pyrolysis The heterogeneous catalytic performance of Palm Oil Fuel Ash (POFA) in the production of biodiesel via transesterification of jatropha oil was investigated. The morphological and chemical properties of POFA were studied using Scanning Electron Microscopy (SEM) and X-ray Fluoroscopy (XRF) respectively. The crude Jatropha oil was transesterified and 0.1 wt%, 0.2 wt%, 0.3wt%, 0.4wt% and 0.5wt% of POFA were used as heterogeneous catalyst. Fourier Transform Infrared (FTIR) has been used to determine the functional group of the samples. SEM indicates the presence porous structure, texture and irregular shape on POFA while XRF shows that it comprises mainly of SiO2 (79.45 %). The maximum percentage of biodiesel yield was 92.30% at the application of 0.2wt% POFA. This shows that POFA can be used as a heterogeneous catalyst in the production of biodiesel.","PeriodicalId":21583,"journal":{"name":"Science World Journal","volume":"11 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141021266","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

Production of cellulase enzymes by Bacillus sp and Pseudomonas sp isolated from anthill soil 从蚁穴土壤中分离的芽孢杆菌和假单胞菌生产纤维素酶

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.34

R.S. Ibrahim, J. Maiangwa, S. Idris, J. Musa

引用次数: 0

Analysis of mathematical model for asthma caused by the effects of environmental pollution 环境污染影响导致哮喘的数学模型分析

Science World Journal Pub Date : 2024-05-02 DOI: 10.4314/swj.v19i1.6

Olukayode Adeyemo, Sunday O. Adewale, A. Oladipo, M. A. Omoloye

引用次数: 0