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ISOLATION METHODS FOR MOLECULAR DETECTION AND ANTIBIOTIC RESISTANCE PATTERN OF CAMPYLOBACTER SPP IN LAYER CHICKENS 蛋鸡弯曲杆菌SPP分子检测分离方法及耐药模式研究
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2111
O. Kehinde, M. Dipeolu, O. Awoyomi, M. Agbaje, O. Fasanmi, I. Kassem, O. Ojo, O. Adebowale, E. Omoshaba, J. Nwanta
This study was conducted to compare two culture methods for the isolation of Campylobacter spp from commercial layer chickens and subsequently confirmed by Polymerase Chain Reaction assays (PCR). Furthermore, the antimicrobial resistance profiles of PCR positive Campylobacter isolates were determined.Cloacal swab samples (550) from chickens randomly selected from five poultry farms in the four geographical zones in Ogun State were cultured for Campylobacter using modified charcoal Cefoperazone deoxycholate agar (MCCDA) and an improved culture method involving Preston broth pre-enrichment and subsequent subculture on Mueller Hinton agar with Campylobacter growth supplements. Putative isolates were later confirmed by PCR assay and sequencing analysis.Other isolates that grew on MCCDA and confirmed by sequencing analysis are Enterococcus faecalis, Escherichis coli, Comamonas kerstli and Pseudomonas aeroginusa . The antibiotic resistant profile of all the isolates were evaluated genotypically for resistance genes to tetracyclines (tetO), multiclasses (cmeB), aminoglycosides (aphA-3-1) and β-lactams (Blaoxa-61) using multiplex PCR (mPCR), and phenotypically for chlortetracycline, tylosin, streptomycin, ciprofloxacin and erythromycin resistance by microbroth dilution method which correspond to the antibiotic resistance genes. The apparent prevalence of Campylobacter was 16.8% by MCCDA while none of the isolates was positive to PCR. Meanwhile, prevalence rate of 26% was obtained using Preston broth pre-enrichment and Mueller Hinton agar with Campylobacter growth supplements, of which 11/50 (22%) of the isolates was confirmed positive by PCR. Genotypic characterization of PCR positive isolates showed 10/11(90%) were C. coli, 1/11(10%) other Campylobacter species and 0% C. jejuni. All the isolates carried both tetO and cmeB resistant genes. The results of minimum inhibitory concentration presented all PCR positive isolates had resistance of 10/10(100%), 9/10(90%), 6/10(60%), 9/10(90%), and 8/10(80%) to tetracycline, ciprofloxacin, erythromycin, spectinomycin and tylosin respectively. In addition, all isolates carried multiple resistance to most antibiotics tested which are commonly used in poultry practice in Nigeria. Campylobacter spp in the study areas showed diverse genotypic characteristics, and gene mediated multidrug resistance.    
本研究比较了两种从商品蛋鸡中分离弯曲杆菌的培养方法,并采用聚合酶链反应(PCR)对其进行了验证。此外,还测定了PCR阳性弯曲杆菌分离株的耐药谱。从奥贡州4个地理区域的5个家禽养殖场随机选取550只鸡,采用改性炭Cefoperazone脱氧胆酸琼脂(MCCDA)和改进的培养方法(Preston肉汤预富集,随后在添加弯曲杆菌生长添加剂的Mueller Hinton琼脂上进行传代培养)对其进行肠粘膜菌签培养。随后通过PCR和测序分析证实了假定的分离株。其他在MCCDA上生长并经测序分析证实的分离株有粪肠球菌、大肠杆菌、克氏单胞菌和风产假单胞菌。采用多重聚合酶链反应(mPCR)对所有菌株的四环素类(tetO)、多类(cmeB)、氨基糖苷类(aphA-3-1)和β-内酰胺类(Blaoxa-61)耐药基因进行基因典型分析,采用微肉汤稀释法对与耐药基因对应的氯霉素、泰霉素、链霉素、环丙沙星和红霉素耐药基因进行表型分析。MCCDA检测显示弯曲杆菌的表观流行率为16.8%,而PCR检测均为阴性。同时,用Preston肉汤预富集和Mueller Hinton琼脂培养基添加弯曲杆菌生长物,得到的感染率为26%,其中11/50(22%)的分离株经PCR证实为阳性。PCR阳性菌株的基因型鉴定结果显示,10/11(90%)为大肠杆菌,1/11(10%)为其他弯曲杆菌,0%为空肠杆菌。所有分离株均携带tetO和cmeB耐药基因。最低抑菌浓度结果显示,所有PCR阳性菌株对四环素、环丙沙星、红霉素、大观霉素和泰乐素的耐药率分别为10/10(100%)、9/10(90%)、6/10(60%)、9/10(90%)和8/10(80%)。此外,所有分离株都对尼日利亚家禽实践中常用的大多数抗生素具有多重耐药性。研究区弯曲杆菌表现出多样的基因型特征,并有基因介导的多药耐药。
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引用次数: 0
PATHOMORPHOLOGICAL CHANGES AND BACTERIAL PATHOGENS ASSOCIATED WITH SWINE PNEUMONIAS IN SOUTHWEST NIGERIA 尼日利亚西南部与猪肺炎相关的病理形态学变化和细菌病原体
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2088
M. Olaniyi, D. Ekum, E. Omoshaba, A. Sonibare, O. Ajayi, O. Ojo, I. Faramade, O. Mustapha, O. Alaka
Pneumonia is a major economic threat to swine industry worldwide, however, there is still dearth of information on the pathology and associated pathogens in Nigeria, and these were therefore investigated. Lungs from 408 slaughtered pigs were randomly collected from abattoirs in Abeokuta, Ibadan and Lagos. The lung samples were cultured for bacterial pathogens using standard techniques, while formalin-fixed tissues were processed for histopathological examination. Grossly, the most consistent lesion was bronchopneumonia (35.3%). The main histopathological findings were lymphoid hyperplasia of bronchus-associated lymphoid tissue (BALT) (88.2%), suppurative bronchopneumonia (63.6%), suppurative bronchitis and bronchiolitis with concurrent epithelial hyperplasia (57.1%), as well as thickened alveolar septa due to cellular infiltration consisting predominantly of neutrophils (54.1%). Ten different species of bacteria were isolated from the lung samples in which two or more pathogens were isolated from each sample (82.7%). Pasteurella multocida was the most frequently isolated bacterium (54.8%). Among the bacteria isolated, there were significant (P < 0.05) differences in the frequencies of isolation of β-haemolytic Streptococci, P. multocida, Haemophilus species and Escherichia coli between the pneumonic lungs and apparently normal lungs. The results of bacterial culture, gross and histopathological changes recorded in this study are consistent with bacterial pneumonia possibly caused by most of the bacteria identified in the present study.    
肺炎是全球养猪业的主要经济威胁,然而,尼日利亚仍然缺乏有关病理学和相关病原体的信息,因此对这些进行了调查。从阿贝奥库塔、伊巴丹和拉各斯的屠宰场随机收集了408头屠宰猪的肺。肺样本采用标准技术培养细菌病原体,同时对福尔马林固定组织进行组织病理学检查。大体而言,最一致的病变是支气管肺炎(35.3%)。主要组织病理学表现为支气管相关淋巴组织(BALT)淋巴样增生(88.2%),化脓性支气管肺炎(63.6%),化脓性支气管炎和细支气管炎并发上皮增生(57.1%),以及以中性粒细胞为主的细胞浸润导致肺泡间隔增厚(54.1%)。从肺样本中分离出10种不同的细菌,其中每个样本中分离出2种或2种以上的病原体(82.7%)。多杀性巴氏杆菌是分离最多的细菌(54.8%)。在分离的细菌中,肺炎肺与明显正常肺中β-溶血性链球菌、多杀性假单胞菌、嗜血杆菌和大肠杆菌的分离频率差异有统计学意义(P < 0.05)。本研究记录的细菌培养、大体和组织病理学改变结果与本研究中发现的大多数细菌可能引起的细菌性肺炎一致。
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引用次数: 0
MYCOFLORA AND AFLATOXIN LEVELS IN WALNUT SAMPLES STORED IN DIFFERENT PACKAGING MATERIALS IN OGUN STATE 奥贡州不同包装材料核桃样品中的真菌菌群和黄曲霉毒素含量
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2114
E. Oni, A. Aladesida, T. Obuotor, F. Alder, A. Badmos, Adeleye Tolulope Modupeola, A. Taiwo, A. J. Adeleke
Aflatoxin levels in nuts and fruits pose a great threat to food storage and availability. This study aimed at determining the mycoflora and aflatoxin level in stored walnut under various conditions.  Freshly harvested walnuts were stored for 90 days  in three different media: jute bags, Plastic containers and sterile polythene bags under room (37ᵒC) and refrigeration (4ᵒC) temperature. After 90 days of storage, the stored walnuts were examined for fungal growth at one month interval after which colonial and morphological characterization were carried out to identify the fungi present. Proximate analysis and aflatoxin content of the walnut samples were determined by standard methods. Fungi isolated from the walnuts include; Aspergillus niger, Saccharomyces cerevisae, Penicillum notatum, Aspergillus sydowi, Fusarium oxysporium, and Rhizopus stolonifer. Walnuts stored in plastic container at room temperature had the lowest aflatoxin level of 0.002 ng/kg while that stored in polythene bags had the highest (0.054 ng/kg).  Proximate analysis also revealed that walnuts stored in polythene bag reduced significantly (p<0.05) in protein, ash content, fat, fibre, moisture and carbohydrates while samples stored in jute bag and plastic container remained unchanged. This study shows that storage methods contributed to the overall quality, shelf life and aflatoxin content of walnut and hence care should be taken during post harvesting process.    
坚果和水果中的黄曲霉毒素水平对食物的储存和供应构成巨大威胁。本研究旨在测定不同贮藏条件下核桃中真菌菌群和黄曲霉毒素的含量。将新鲜收获的核桃在室温(37℃)和冷藏(4℃)下,分别用黄麻袋、塑料容器和无菌聚乙烯袋三种不同的介质保存90天。保存90天后,每隔一个月检测一次核桃的真菌生长情况,然后进行菌落和形态鉴定,以鉴定存在的真菌。采用标准方法对核桃样品进行近似分析和黄曲霉毒素含量测定。从核桃中分离的真菌包括;黑曲霉、酿酒酵母菌、青霉菌、西道曲霉、尖孢镰刀菌和匍匐茎根霉。室温塑料容器贮藏的核桃黄曲霉毒素含量最低,为0.002 ng/kg,塑料袋贮藏的核桃黄曲霉毒素含量最高,为0.054 ng/kg。比邻分析还发现,与黄麻袋和塑料容器相比,聚乙烯袋装核桃的蛋白质、灰分、脂肪、纤维、水分和碳水化合物含量均显著降低(p<0.05)。研究表明,贮藏方式影响核桃的整体品质、保质期和黄曲霉毒素含量,采收后应注意贮藏方式。
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引用次数: 0
IMPACT ASSESSMENT OF SUBSTANTIVE HYDRO-CLIMATIC VARIABLES ON 2012 FLOOD EXTENT IN YOLA AND ENVIRONS 2012年约拉及周边地区实质性水文气候变量对洪涝影响评价
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2109
A. Sadiq
Flood is a seasonal phenomenon which is natural in it hazardous implication and occurs when there is relative high flow over the banks of the streams as a combine consequence of  high recorded data of hydro-climatic related variables in a given geographical area.  Yola North LGA, of Adamawa state had experienced an unprecedented flood in the year 2012 over the past decade which might have been influenced by some hydro-climatic variables and caused devastating effects on lives, properties, farmland and buildings respectively. This study focused on the impact assessment of substantive hydro-climatic variables on 2012 flood event in Yola -North and its environs. The hydro-climatic variables data were obtained from Meteorological station at UBRBDA, Yola for a decade. The amount of rainfall experienced was found to be highest (1085.2mm) in the year 2012 than any other year under consideration (2008-2017) except that of 2016, number of rainy days was highest (81 days) in the year 2012. Similarly, in the month of August in the year 2012 evaporation rate was lowest with about 69 mm than any other month of August in the decade, the annual value of water discharge was highest in the year 2012 over the decade with about 6,340(m3/s), the gauge height was found to be highest with about 7.33 m in the year 2012 and the water level was highest in the month of June, July and September  with the corresponding values of 3.37 m, 3.49 m and 6.58 m compared to similar months in the years of the decade respectively. These increased changes in some hydro-climatic data analyzed might be the fundamental natural factor that causes the unique flooding than any other factor in the year 2012 in the study area and over time posed negative impact on agricultural lands.  Therefore, the study recommends the urgent need to carry out a comprehensive seasonal hydro-climatic data record simulation analysis and variations with a view of taking them as a recipe and strategies of forecasting and predicting the reoccurrence of such phenomenon. The additional meteorological station should be provided by the government agencies in all agricultural zones of the state for adequate and wide range of hydro-climatic data recording for appropriate prediction of weather indices in future.      
洪水是一种季节性现象,就其危险含义而言是自然的,当河流两岸的流量相对较高时,就会发生洪水,这是某一地理区域内与水文气候有关的变量的高记录数据的综合结果。在过去十年中,阿达马瓦州的约拉北部地区在2012年经历了前所未有的洪水,洪水可能受到一些水文气候变量的影响,分别对生命、财产、农田和建筑物造成了毁灭性的影响。本文主要研究了2012年约拉北部及其周边地区洪水事件中实质性水文气候变量的影响评价。水文气候变量数据来自约拉市UBRBDA气象站近十年的观测数据。除2016年外,2012年的降雨量最高(1085.2毫米),比其他任何一年(2008-2017年)都要多,2012年的雨天最多(81天)。同样,在2012年8月的蒸发率比其他任何月最低约为69毫米8月的十年中,排水的年度价值最高2012年的十年间约6340(立方米/秒),测量高度被发现最高只有7.33 2012年最高水位是在6月,7月和9月相应的值为3.37米,与过去十年的类似月份相比,分别为349万和658万。所分析的一些水文气候数据的这些增加的变化可能是导致2012年研究区域独特的洪水的根本自然因素,并且随着时间的推移对农业用地造成了负面影响。因此,研究建议,迫切需要开展全面的季节性水文气候数据记录模拟分析和变化,并将其作为预测和预测此类现象再次发生的方法和策略。国家所有农业区的政府机构应提供额外的气象站,以便充分和广泛地记录水文气候数据,以便将来适当地预测天气指数。
{"title":"IMPACT ASSESSMENT OF SUBSTANTIVE HYDRO-CLIMATIC VARIABLES ON 2012 FLOOD EXTENT IN YOLA AND ENVIRONS","authors":"A. Sadiq","doi":"10.51406/jnset.v19i1.2109","DOIUrl":"https://doi.org/10.51406/jnset.v19i1.2109","url":null,"abstract":"Flood is a seasonal phenomenon which is natural in it hazardous implication and occurs when there is relative high flow over the banks of the streams as a combine consequence of  high recorded data of hydro-climatic related variables in a given geographical area.  Yola North LGA, of Adamawa state had experienced an unprecedented flood in the year 2012 over the past decade which might have been influenced by some hydro-climatic variables and caused devastating effects on lives, properties, farmland and buildings respectively. This study focused on the impact assessment of substantive hydro-climatic variables on 2012 flood event in Yola -North and its environs. The hydro-climatic variables data were obtained from Meteorological station at UBRBDA, Yola for a decade. The amount of rainfall experienced was found to be highest (1085.2mm) in the year 2012 than any other year under consideration (2008-2017) except that of 2016, number of rainy days was highest (81 days) in the year 2012. Similarly, in the month of August in the year 2012 evaporation rate was lowest with about 69 mm than any other month of August in the decade, the annual value of water discharge was highest in the year 2012 over the decade with about 6,340(m3/s), the gauge height was found to be highest with about 7.33 m in the year 2012 and the water level was highest in the month of June, July and September  with the corresponding values of 3.37 m, 3.49 m and 6.58 m compared to similar months in the years of the decade respectively. These increased changes in some hydro-climatic data analyzed might be the fundamental natural factor that causes the unique flooding than any other factor in the year 2012 in the study area and over time posed negative impact on agricultural lands.  Therefore, the study recommends the urgent need to carry out a comprehensive seasonal hydro-climatic data record simulation analysis and variations with a view of taking them as a recipe and strategies of forecasting and predicting the reoccurrence of such phenomenon. The additional meteorological station should be provided by the government agencies in all agricultural zones of the state for adequate and wide range of hydro-climatic data recording for appropriate prediction of weather indices in future. \u0000  \u0000  \u0000 ","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131756365","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
URBAN FLOOD IMPACTS, FLOOD WATER QUALITY AND RISK MAPPING OF OLODO AREA, IBADAN, NIGERIA 尼日利亚伊巴丹市olodo地区城市洪水影响、洪水水质和风险测绘
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2097
O. Adedeji, O. O. Olayinka, T. Ogundiran, O. O. Tope-Ajayi
This study assessed urban flood impact, flood water quality and vulnerability around Olodo area of Ibadan region, Nigeria. The study employed remote sensing and GIS techniques in creating vulnerability and risk maps. Digital terrain model (DTM) was used to get the topography of the study area. Footprints of buildings along the Egberi riverbank and flood plain in Olodo were created in the GIS environment from high resolution satellite imagery. Buffering operation was conducted to classify the buildings into risk zones based on closeness to the riverbank using ArcGIS 10.0. The study revealed that 326 buildings were within the very vulnerable and vulnerable zones because they were less than 15.2m away from the riverbank. The characteristics of water quality change during the flood and non-flood periods. TSS, DO, NOD, and COD were all higher during the flood event. Microbial analysis showed that water quality levels in the floodwater exceeded water quality standards (e.g., the coliform excess from 10 to 10,000 times), and thus this may be a health risk for local people during flood events. Concentration of Escherichia coli (E. coli) ranged from 484 to 1290 cfu/100 mL during flooding compared to 192 to 295 cfu/100 mL after flood. Salmonella was found to be high ranging from 659 to 1840 cfu/100 mL during flooding compared to 530 to 1034 cfu/100 mL after flooding.      
本研究评估了尼日利亚伊巴丹地区Olodo地区的城市洪水影响、洪水水质和脆弱性。这项研究利用遥感和地理信息系统技术制作脆弱性和风险地图。采用数字地形模型(DTM)获取研究区地形。在GIS环境下,利用高分辨率卫星图像绘制了奥罗多Egberi河岸和洪泛平原沿线的建筑物足迹。利用ArcGIS 10.0软件,根据建筑物与河岸的接近程度进行缓冲操作,将建筑物划分为风险区。该研究显示,326座建筑物处于非常脆弱和脆弱区域,因为它们距离河岸不到15.2米。洪涝期和非洪涝期的水质特征发生了变化。TSS、DO、NOD和COD在洪涝期间均较高。微生物分析表明,洪水中的水质水平超过了水质标准(例如,大肠菌群超标10倍至1万倍),因此,在洪水事件期间,这可能对当地人民的健康构成威胁。在淹水期间,大肠杆菌的浓度为484至1290 cfu/100 mL,而淹水后的浓度为192至295 cfu/100 mL。在水浸期间沙门氏菌含量为659 ~ 1840 cfu/100 mL,而水浸后沙门氏菌含量为530 ~ 1034 cfu/100 mL。
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引用次数: 0
SPATIAL TECHNOLOGIES IN PASTURE AND RANGE MANAGEMENT: A REVIEW 牧草和牧场管理中的空间技术:综述
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2113
J. Oyedepo, O. Onifade
This paper looked at practical ways in which pasture and range management (P&RM) can benefit from application of spatial technologies; namely Satellite Remote Sensing, Global Positioning System and Geographical Information Science. Brief mention of these spatial technologies’ components and ways of their integrations (linear, interactive, hierarchical and complex models) were discussed with specific reference to P&RM. The paper also dwells on salient principles of applied remote sensing and geospatial technics in P&RM using examples and case studies revolving around rangeland management, spatial decision support and resource conservation. Specifically, the relevance of hyper spectral imageries and vegetation indices in cattle population and range roaming determination, grazing land and paddock site-specific management were demonstrated. It is hoped that the review will create awareness for the inclusion and use of remote sensing and geospatial technics in many areas of livestock management in Nigeria.      
本文探讨了空间技术在牧场和牧场管理中的应用;即卫星遥感、全球定位系统和地理信息科学。简要介绍了这些空间技术的组成部分及其集成方式(线性模型、交互模型、层次模型和复杂模型),并特别提到了P&RM。本文还通过围绕牧场管理、空间决策支持和资源保护的实例和案例研究,阐述了应用遥感和地理空间技术在P&RM中的突出原则。具体而言,高光谱图像和植被指数在牛种群和范围漫游确定,放牧地和围场场地特定管理中的相关性得到了证明。希望这次审查将提高人们对在尼日利亚畜牧管理的许多领域纳入和使用遥感和地理空间技术的认识。
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引用次数: 0
PREDICTING SOCIAL NETWORK ADDICTION USING VARIANT SIGMOID TRANSFER FEED-FORWARD NEURAL NETWORKS (FNN-SNA) 基于变异s型转移前馈神经网络(fnn-sna)的社交网络成瘾预测
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2110
F. E. Ayo, O. Folorunso, A. Abayomi-Alli, A. Olubiyi
Researchers have reflected on personal traits that may predict Social Networking Sites (SNS) addiction. However, most of the researchers involved in the findings of personality traits predictor for social networking addiction either postulate or based their conclusions on analytical tools. Moreso, a review of the literature reveals that the prediction of social networking addiction using classifiers have not been well researched. We examined the prediction of SNS addiction from a well-structured questionnaire consisting of sixteen (16) personality traits. The questionnaire was administered on the google form with a response rate of 95% out of the 102-sample size. Additionally, a three (3) variant sigmoid transfer feed- forward neural networks was developed for the prediction of SNS addiction. Result indicated that pertinence (β = 0.251, p  0.01) was the most powerful predictor of social networking addiction in general and less obscurity addiction (β = 0.244, p  0.01). Experimental results also showed that the developed classifier correctly predict SNS addiction with 98% accuracy compared to similar classifiers.      
研究人员对可能预示社交网站成瘾的个人特征进行了反思。然而,大多数参与社交网络成瘾人格特征预测研究的研究人员要么是假设,要么是基于分析工具得出的结论。此外,回顾文献发现,使用分类器预测社交网络成瘾尚未得到很好的研究。我们通过一份包含16个人格特征的结构良好的问卷来检验社交网络成瘾的预测。问卷是在谷歌表格上进行的,102个样本的回复率为95%。此外,研究人员还开发了一种用于预测SNS成瘾的三(3)变体乙状结肠转移前馈神经网络。结果表明,相关性(β = 0.251, p 0.01)是一般社交网络成瘾的最有效预测因子,而模糊成瘾的预测因子较低(β = 0.244, p 0.01)。实验结果还表明,与同类分类器相比,开发的分类器正确预测SNS成瘾的准确率为98%。
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引用次数: 0
AN ANALYSIS OF TRANSACTIONS IN E-PAYMENT SYSTEM USING MOBILE AGENTS 基于移动代理的电子支付系统交易分析
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2096
O. R. Vincent
Commercial interactions between merchants and customers pose a significant concern as they are associated with a large volume of data and complex information, especially when there is a need for switching requirements. This paper presents an agent-based analysis of e-payment transactions with the switching operations. The model adopts an inter-bank transaction network and consists of a terminal point of sale (POI) and three essential players in e-payment: customer, bank (merchant), and the Switch. This study analyses the various payment interactions using agent technology. The agent coordinates movement while the negotiation protocol serves as an internal control of the payment agreements, while the interactive hosts are the platforms that determine the status of transactions. Each agent host is equipped with a Certification Authority (CA) to secure communication between the merchant and the customer. Different transactions that agents could make are examined with formal descriptions. The implementation is achieved in Jade and compares with the object serialization mechanism. The simulation results show higher quality adaptation of agent systems and evidence of agentisation of e-transaction with Switch.      
商家和客户之间的商业交互引起了很大的关注,因为它们与大量数据和复杂信息相关联,特别是在需要切换需求时。本文提出了一种基于agent的电子支付交易交换操作分析方法。该模型采用银行间交易网络,由一个销售终端(POI)和电子支付中的三个基本参与者:客户、银行(商家)和Switch组成。本研究使用代理技术分析各种支付互动。代理协调移动,协商协议作为支付协议的内部控制,而交互主机是确定交易状态的平台。每个代理主机都配备了一个证书颁发机构(CA),以确保商家和客户之间的通信安全。用正式的描述来检查代理可以进行的不同交易。该实现是在Jade中实现的,并与对象序列化机制进行了比较。仿真结果表明,agent系统具有较高的自适应质量,并证明了Switch对电子交易的代理效果。
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引用次数: 0
GEO-ELECTRIC INVESTIGATION OF GROUNDWATER POTENTIAL IN LADERIN HOUSING ESTATE, ABEOKUTA, SOUTHWESTERN, NIGERIA 尼日利亚西南部阿贝奥库塔laderin住宅区地下水潜力地电调查
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2098
A. Alabi, A. O. Adewale, O. O. Adeleke, F. G. Akinboro, Ayodeji Afe, A. Ganiyu
Vertical Electrical Sounding (VES) and 2D Electrical Resistivity Tomography (ERT), with Schlumberger and Wenner electrode array configurations respectively were employed to investigate the groundwater potential of Laderin Housing Estate located at Oke-mosan, Abeokuta, Ogun state, southwestern Nigeria. The area is underlain by the basement complex of the southwestern Nigeria. The research aimed at determining the aquifer/groundwater zone and characterizes the lithology of the study area. The geophysical survey involving nine VES and four profile of 2-D ERT lines with lengths varying from 100 m to 150 m were carried out.  The field data from both the ERT and VES were processed and interpreted using RES2DINV and WINRESIST software respectively. Geometrical effects from the pseudo-section were removed and an image of true depth and true formation resistivity were produced. Three to four geo-electric layers were revealed in all, which are; topsoil, weathered layer, fractured and fresh basement rock. The result of 2 D inversion provide lithologic unit, weathering profile and geological structure favourable for groundwater potential. The results show that the basement rock was delineated with resistivity values that range between 701.3 Ωm and 9459.3 Ωm. The bedrock topography has a variable thickness of overburden between 3 m and above 16.4 m, which is fairly shallow.  The geophysical survey show that VES 2, VES 3, VES 4, VES 5, and VES 6 are possible location for groundwater extraction. The difficult terrain, where thick overburden are located are also promising target for groundwater development.    
垂直电测深(VES)和二维电阻率层析成像(ERT)分别采用斯伦贝谢(Schlumberger)和Wenner电极阵列配置,对尼日利亚西南部奥贡州阿贝奥库塔(Abeokuta) Oke-mosan的Laderin Housing Estate的地下水潜力进行了调查。该地区位于尼日利亚西南部的地下建筑群之下。该研究旨在确定含水层/地下水带,并确定研究区域的岩性特征。进行了9条VES和4条长度从100米到150米不等的二维ERT线的地球物理调查。分别使用RES2DINV和WINRESIST软件对ERT和VES的现场数据进行处理和解释。消除了伪剖面的几何影响,得到了真实深度和真实地层电阻率图像。共发现3 ~ 4个地电层,分别为;表土,风化层,断裂和新鲜的基底岩。二维反演结果提供了有利于地下水开发的岩性单元、风化剖面和地质构造。结果表明,圈定基底岩的电阻率范围为701.3 Ωm ~ 9459.3 Ωm。基岩地形覆盖层厚度在3 m ~ 16.4 m以上不等,较浅。地球物理调查表明,2号、3号、4号、5号和6号井是可能抽取地下水的位置。地形复杂,覆盖层较厚,也是地下水开发的有利目标。
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引用次数: 0
AN AUTOMATED ENERGY BILL METERING SYSTEM BASED ON GSM TECHNOLOGY 一种基于GSM技术的自动化能源账单计量系统
Pub Date : 2021-12-02 DOI: 10.51406/jnset.v19i1.2093
K. Okokpujie, A. Abayomi-Alli, O. Abayomi-Alli, M. Odusami, I. Okokpujie, O. A. Akinola
The measurement of the energy consumed by residential and commercial buildings by utility provider is important in billing, control, and monitoring of the usage of energy. Traditional metering techniques used for the measurement of energy are not convenient and is prone to different forms of irregularities. These irregularities include meter failure, meter tampering, inaccuracies in billing due to human error, energy theft, and loss of revenue due to corruption, etc. This research study proposed the design and construction of a microcontroller-based electric energy metering system using the Global System for Mobile communication (GSM) network. This system provides a solution to the irregularities posed by the traditional metering technique by allowing the utility provider have access to remote monitoring capabilities, full control over consumer load, and remote power disconnection in the case of energy theft. Proteus simulation software was used to model the system hardware and the software was obtained by using embedded C programming and visual basic. It was observed that the system could remotely take accurate energy readings, provided full control over consumer loads and execute remote disconnection in case of energy theft. The system provides high performance and high accuracy in power monitoring and power management.    
公用事业供应商对住宅和商业建筑所消耗的能源的测量在能源使用的计费、控制和监控中是重要的。传统的计量技术用于测量能量是不方便的,容易出现不同形式的不规则。这些违规行为包括仪表故障、仪表篡改、由于人为错误导致的计费不准确、能源盗窃以及由于腐败导致的收入损失等。本研究提出了一种基于全球移动通信系统(GSM)网络的基于单片机的电能计量系统的设计与构建。该系统为传统计量技术带来的不规范问题提供了解决方案,允许公用事业供应商访问远程监控功能,完全控制用户负载,并在能源盗窃的情况下远程断电。采用Proteus仿真软件对系统硬件进行建模,采用嵌入式C语言编程和visual basic进行软件开发。据观察,该系统可以远程获取准确的能量读数,提供对用户负载的完全控制,并在能源被盗时执行远程断开连接。该系统提供了高性能、高精度的电源监控和电源管理功能。
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Journal of Natural Sciences Engineering and Technology
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