Nigerian Journal of Technological Research最新文献

M(3000)F2 and IRI-2012 model at an equatorial latitude in the African sector 非洲扇区赤道纬度的M(3000)F2和IRI-2012模式

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.8

A. Olawepo, J. O. Adeniyi, A. Afolabi

引用次数: 0

Behavior of under and over-reinforced concrete slender beams at failure 下、过钢筋混凝土细长梁的破坏行为

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.3

L. M. Olanitori, Damilola David Fregene

引用次数: 0

Pollution Assessment of the Physico-Chemical Properties of the Lagos Lagoon 拉各斯泻湖理化性质污染评价

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.1

O. Loto, A. Ajibare

{"title":"Pollution Assessment of the Physico-Chemical Properties of the Lagos Lagoon","authors":"O. Loto, A. Ajibare","doi":"10.4314/njtr.v16i3.1","DOIUrl":"https://doi.org/10.4314/njtr.v16i3.1","url":null,"abstract":"Lagos lagoon has received wastewater discharged from different anthropogenic sources. Therefore, this study determined the water quality and identified its pollution status. Water quality index (WQI), several heavy metal pollution indices as well as single factor and comprehensive pollution indices were applied. The obtained data revealed that physicochemical parameter varied between 24.00±1.41 and 27.00±0.71°C for temperature; 2.50±2.83 and 10.50±0.71‰ for salinity; 3.90±0.99 and 4.60±0.85 mg/l for dissolved oxygen; 7.26±0.25 and 8.38±0.66 for pH; 3.50±0.71 and 10.00±7.07mg/l for BOD. The results also revealed that sulphate, phosphate and nitrate had means of 10.00±10.45mg/l, 0.85±1.04mg/l and 11.11±17.88 mg/l respectively while Pb, Zn, Cu and Hg had means of 0.25±0.49mg/l, 25.49±44.27mg/l, 1.88±2.94mg/l and 0.00±0.00mg/l respectively. SPI classified pH, BOD, Cu and Zn within the ‘medium pollution’ category while nitrate and phosphate indicated heavy pollution of the lagoon. The PI revealed that Cu and Zn had moderate and slight effect on the aquatic environment respectively while Pb and Hg had no effect on the ecosystem. The mean WQI revealed that the lagoon was classified to be good for aquatic biota despite that HEI and Cd revealed that there was high pollution of heavy metals in the lagoon. The CPI described the lagoon as slightly polluted.","PeriodicalId":236361,"journal":{"name":"Nigerian Journal of Technological Research","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126570744","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: 1

Effect of soaking conditions on properties of flour from sweet potato slices 浸泡条件对红薯片面粉性能的影响

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.2

R. Akinoso, Oluyemi Elizabeth Odusoga, A. Alaka

{"title":"Effect of soaking conditions on properties of flour from sweet potato slices","authors":"R. Akinoso, Oluyemi Elizabeth Odusoga, A. Alaka","doi":"10.4314/njtr.v16i3.2","DOIUrl":"https://doi.org/10.4314/njtr.v16i3.2","url":null,"abstract":"Native flour of sweet potato has limited industrial applications. This study investigated effect of soaking sweet potato root in hot water and citric acid concentrations on flour properties. Sweet potato root was soaked at temperatures of 50oC, 60oC and 70oC for 2 h; citric acid concentrations of 1%, 3% and 5% for 1 h, and combination of best samples in each of the first two modification treatments in 50:50 proportions. Treated root was processed into flour using standard procedures. Proximate, functional and pasting properties of the flours were determined using standard methods. The flour was used as major ingredient in production of baked snacks. Treatments had significant effect on proximate, functional and pasting properties of the flour. Moisture content ranged from 6.5 to 9.7%, protein content 1.6 to 3.0%, ash content 0.1 to 3.15%, fiber content 3.6 to 4.2%, and carbohydrate content 82.1 to 84.7%. Water and oil absorption capacities ranged from 2.2 to 3.0 ml/g and 0.8 g/ml to 1.8 g/ml respectively, swelling power (4.32 to 9.23 g/g) and bulk density (0.77 to 0.95 g/ml). Snack produced with flour gotten from 60oC soaked root for 2 h was best in sensory ratings.","PeriodicalId":236361,"journal":{"name":"Nigerian Journal of Technological Research","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125644269","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

Antibiotic Resistance Profiling of Salmonella sp. isolated from African Catfish (Clarias gariepinus) 非洲鲶鱼沙门氏菌的耐药性分析

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.7

P. Fowoyo

{"title":"Antibiotic Resistance Profiling of Salmonella sp. isolated from African Catfish (Clarias gariepinus)","authors":"P. Fowoyo","doi":"10.4314/njtr.v16i3.7","DOIUrl":"https://doi.org/10.4314/njtr.v16i3.7","url":null,"abstract":"The African catfish (Clarias gariepinus) is an important fresh water fish consumed by a large percentage of the populace globally and it may be contaminated by pathogenic bacteria such as Salmonella sp. In this study, a total of fifteen (15) samples of African catfish were collected from different markets in Lokoja, Nigeria. The Salmonella sp. were isolated from the catfish samples by pre-enrichment in peptone water and subsequent inoculation on selective medium namely brilliant-green agar (BGA), bismuth sulphite agar (BSA) and Salmonella-Shigella agar (SSA). The Salmonella isolates were tested for susceptibility to 10 different commercially available antibiotics using the disc diffusion method. A total of thirty-four Salmonella species was isolated. The percentage occurrence of Salmonella sp. in the catfishes examined was very high (80%). The incidence of Salmonella sp. in the intestine (86.7%) of the catfish was higher than for the gills (66.7%) and the skin (73.3%). Majority of the isolates were resistant to Amoxicillin, Sulfomethoxazole-trimethoprim, Amoxicillin-clavulanic acid and Streptomycin. This study therefore demonstrated the occurrence of Salmonella species in African catfish with some exhibiting antibiotic resistance. Thus, there is a potential risk of transmission of drug resistant Salmonella species to man when contaminated catfish is consumed. The use of antibiotics in fish farming should be regulated so as to decrease antibiotic residues in fish.","PeriodicalId":236361,"journal":{"name":"Nigerian Journal of Technological Research","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125305309","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

Use of polyethylene terephthalate as an Anti-stripping agent in GLASSPHALT 使用聚对苯二甲酸乙二醇酯作为玻璃防剥离剂

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.5

A. Murana, Ibrahima Ndao, A. Olowosulu

引用次数: 0

Effects of different steeping methods on the microbial quality of ‘ogi’ produced from Sorghum bicolor (Linn) 不同浸泡方式对高粱“ogi”微生物品质的影响

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.6

Abiola Stephen Okunade, T. Adebolu, M. Bayode

{"title":"Effects of different steeping methods on the microbial quality of ‘ogi’ produced from Sorghum bicolor (Linn)","authors":"Abiola Stephen Okunade, T. Adebolu, M. Bayode","doi":"10.4314/njtr.v16i3.6","DOIUrl":"https://doi.org/10.4314/njtr.v16i3.6","url":null,"abstract":"In this study, the effects of different steeping methods on the microbial quality of ‘ogi’ produced from Sorghum bicolor (Linn.) grains were carried out. The sorghum grains were divided into four parts; the first part (Sample A) was steeped with cold water at 30+ 2oC for 72 h and washed with water before milling, the second part (Sample B) was steeped with cold water at 30+2oC for 72 h but was not washed before milling, the third part (Sample C) was steeped with hot water at 30+2oC for 24 h and washed before milling, while the fourth part (Sample D) was steeped with hot water at 30+2oC for 24 h and was not washed before milling. The processed raw ‘ogi’ samples were subjected to standard microbiological techniques to enumerate the microorganisms present. The highest bacterial count of 3.5 x 103cfu/ml was observed in sample B, the highest fungal count of 2.5 x 104 sfu/ml was observed in sample B, while sample C yields the lowest bacterial count of 8.0 x 102 cfu/ml and fungal count of 4.0 x102 sfu/ml. Good hygienic conditions during the processing of the ‘ogi’ must also be employed to reduce the chances of microbial contamination.","PeriodicalId":236361,"journal":{"name":"Nigerian Journal of Technological Research","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114843634","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

MIMO Detectors: A Comprehensive Performance Analysis MIMO检测器:综合性能分析

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.4

E. Obi, B. O. Sadiq, O. S. Zakariyya, A. Theresa

引用次数: 1

Influence of vehicular emissions on metropolitan trees using chlorophyll contents 车辆排放对都市树木叶绿素含量的影响

Nigerian Journal of Technological Research Pub Date : 2021-09-28 DOI: 10.4314/njtr.v16i3.9

B. Bada, A. Towolawi, Ireyimika Esther Oyegbami

引用次数: 0

A rapid reversed-phase thin layer chromatographic detection protocol for adulteration in some edible fats and oils food formulation 一种快速反相薄层色谱检测某些食用油脂食品配方中掺假的方法

Nigerian Journal of Technological Research Pub Date : 2021-05-24 DOI: 10.4314/NJTR.V16I2.8

M. A. Olajide, Adepoju Adenike Rashidat, Fadipe Victor Olugbenga

{"title":"A rapid reversed-phase thin layer chromatographic detection protocol for adulteration in some edible fats and oils food formulation","authors":"M. A. Olajide, Adepoju Adenike Rashidat, Fadipe Victor Olugbenga","doi":"10.4314/NJTR.V16I2.8","DOIUrl":"https://doi.org/10.4314/NJTR.V16I2.8","url":null,"abstract":"The problems of adulteration in the vegetable oil and fat have been the major draw backs in the food products formulation, in spite of the various adulteration detection methods in different applications that have been reported. However, the detection tools that can be fast and reliable for the routine analysis necessitated the current work. The two groups of three different samples: vegetable fat containing sample (Blue Band, Golden Penny, La Prairie Classic) and animal fat containing samples (Kell Salad Cream, Crosse & Blackwell and Nola) was used for the purity check using the reversed phased - thin layer chromatographic (RPTLC) method of analysis were developed. The average Rf ratio of 0.95 and 0.92, found for the vegetable and animal fat groups were reported, respectively. The Rf = 0.03 difference between the two groups indicated the presence of sistosterol (plant sterol) and cholesterol (animal sterol), an improvement over color detection methods to screen oils and fats to ascertain purity. \u0000Keywords: Sistosterol, Cholesterol, Adulteration, Animal fat, Vegetable oil","PeriodicalId":236361,"journal":{"name":"Nigerian Journal of Technological Research","volume":"5 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646912","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