South Asian Research Journal of Engineering and Technology最新文献_第3页

A Friendly Environmental Route for the Fabrication of Spinel Co3O4 Nanorods, Using Inorganic Precursor Salt and Aqueous Extracts of Moringa oleifera Leaves 用无机前驱体盐和辣木叶水提物制备尖晶石Co3O4纳米棒的环保途径

South Asian Research Journal of Engineering and Technology Pub Date : 2022-04-09 DOI: 10.36346/sarjet.2022.v04i02.002

G. Mata, Joseph K'ekuboni Malongwe, P. O. Lohohola, J. L. Muswema, O. M. Mvele, Remy Imboyo Ndjoko, H. M. Kalele, Désiré Kabuya Tshibangu, Paul Kavuna Mahuku, G. Ekoko

{"title":"A Friendly Environmental Route for the Fabrication of Spinel Co3O4 Nanorods, Using Inorganic Precursor Salt and Aqueous Extracts of Moringa oleifera Leaves","authors":"G. Mata, Joseph K'ekuboni Malongwe, P. O. Lohohola, J. L. Muswema, O. M. Mvele, Remy Imboyo Ndjoko, H. M. Kalele, Désiré Kabuya Tshibangu, Paul Kavuna Mahuku, G. Ekoko","doi":"10.36346/sarjet.2022.v04i02.002","DOIUrl":"https://doi.org/10.36346/sarjet.2022.v04i02.002","url":null,"abstract":"Nowadays many researchers are focused on the sytnhesis of nanoscale tricobalt tetraoxide (Co3O4) particles, owing to their unique properties. These particles have indeed many potential technological applications. The present investigation deals with the fabrication of this spinel oxide: it was successfully synthesized through a friendly environmental method, using cobalt (II) chloride as cobalt precursor and aqueous extract of Moringa oleifera leaves. The latter contains alkaloids as a base source while flavonoids present in the leaves acted as capping agent to prevent the particles agglomeration. Alkaloids present in the leaves were hydrolyzed in water and consequently, hydroxilated Co2+ leads to the formation of Co3O4 powder via calcination. The electronic transmission microscopy has revealed the single crystalline nanorods morphology of the synthetised materials. These nanorods are about several hundred nanometers long and several tens of nanometers in diameter. The bulk Co3O4 is known to be antiferromagnetic, the vibrating sample magnetometer data (at room temperature) of the prepared powder exhibited the lower coercivity and remanence, signaling that the produced spinel was pure and was constituted of superparamagnetic particles made of Co3O4. The UV–visible spectrum exhibited a photoluminescence peak in the visible light range positioned at about 538nm, suggesting this spinel as a visible light emitting material and as photocatalyst under visible light.","PeriodicalId":185348,"journal":{"name":"South Asian Research Journal of Engineering and Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133745443","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

Stabilization of Ula-Ubie-Ubeta Town Road Laterite Soil with Costus Lateriflorus Bagasse Fibre 红木甘蔗渣纤维对乌拉-乌比-乌比镇路红土的稳定作用

South Asian Research Journal of Engineering and Technology Pub Date : 2022-04-07 DOI: 10.36346/sarjet.2022.v04i02.001

Amadise S. Ogboin, C. Kennedy, Nwaobakata Chukwuemeka

{"title":"Stabilization of Ula-Ubie-Ubeta Town Road Laterite Soil with Costus Lateriflorus Bagasse Fibre","authors":"Amadise S. Ogboin, C. Kennedy, Nwaobakata Chukwuemeka","doi":"10.36346/sarjet.2022.v04i02.001","DOIUrl":"https://doi.org/10.36346/sarjet.2022.v04i02.001","url":null,"abstract":"The study evaluated the influence of Costus lateriflorus bagasse fibre on the properties of expansive soils. Laterite and clay soil samples along Ubeta-Ula-Ubie road in Ahoada West LGA of Rivers state, Nigeria were prepared and subjected to laboratory analysis for swelling potential, volume change, maximum dry density (MDD), optimum moisture content (OMC), consistency limits, California bearing ratio (CBR) and unconfined compressive strength (UCS). Preliminary analysis classified the soils as A-7- 6 on the AASHTO classification system. Swelling potential, volume change, maximum dry density (MDD), liquid limit (LL) and plasticity index (PI) of the stabilized Laterite and clay soils along Ubeta-Ula-Ubie road decreased with increasing percentage of Costus lateriflorus bagasse fibre, while optimum moisture content (OMC), plastic limit (PL) and unconfined compressive strength (UCS) increased with the addition of Costus lateriflorus bagasse fibre. Results established that increase bagasse fibre content improved the properties of the soil suitable for road construction. However, the bagasse fibre performed better in Laterite soil than clay soil, and 7.5% bagasse fibre would be appropriate for use as stabilization material in soil with similar characteristics like the Laterite and clay soil along Ubeta-Ula-Ubie road.","PeriodicalId":185348,"journal":{"name":"South Asian Research Journal of Engineering and Technology","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128183685","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

Awareness of the Concept of Social Engineering in Jeddah 吉达对社会工程概念的认识

South Asian Research Journal of Engineering and Technology Pub Date : 2022-02-24 DOI: 10.36346/sarjet.2022.v04i01.003

Mona Alotaibi, Rawan Hamdoon, Rodhab Alsaggaf, Haneen Mubarki, O. Aboulola, Mashael M. Khayyat

引用次数: 0

South Asian Research Journal of Engineering and Technology Pub Date : 2022-01-27 DOI: 10.36346/sarjet.2022.v04i01.002

Maram Aloufi, Nouf Alsulami, Layan Alqahtani, Joud Baali, Mashael M. Khayyat

{"title":"The COVID 19 Related Increased Negative Impact of the Unmonitored Use of Digital Technology on Children in KSA","authors":"Maram Aloufi, Nouf Alsulami, Layan Alqahtani, Joud Baali, Mashael M. Khayyat","doi":"10.36346/sarjet.2022.v04i01.002","DOIUrl":"https://doi.org/10.36346/sarjet.2022.v04i01.002","url":null,"abstract":"The use of digital technology can become a behavioral addiction that negatively affects a person's social and academic life. Nowadays, children all over the world are becoming addicted to technologies - more so than in any past generations. Digital technology has become an integral part of everyday life, and children use it to study and play. Also, some parents use digital technology as a ‘babysitter’ to entertain their children so that the parents can do other things. This affects children's brains and their social, emotional, cognitive, and physical development. This research aims to assess the potential impact of technology on children's behavior. To collect data, this paper used an online survey created with Google Forms. The sample targeted parents. There were 207 responses. The results of the questionnaire and previous studies conducted on the effect of technology on children taken from scientific research found that as technology use increases, the effect it can have on brain function increases. This effect has been linked to physical and psychological problems such as reduced attention span, risk of depression, obesity, and bullying. Based on the study’s results it is recommended that parents monitor their children’s use of digital technology; this includes setting a time limit for using devices, monitoring content, blocking violent and intimidating games for children, and setting a bedtime. In addition, apps such as Qustodio, Norton Family Premier, and Amazon Free Time are suggested as tools to support parents in overseeing their children’s use of digital technology.","PeriodicalId":185348,"journal":{"name":"South Asian Research Journal of Engineering and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115693470","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

The Numerical Simulation of Properties with High Angular Speed & Low Angular Acceleration in Three & Five Freedoms of Robotic Arm I 三自由度和五自由度机械臂高角速度低角加速度特性数值模拟[j]

South Asian Research Journal of Engineering and Technology Pub Date : 2022-01-12 DOI: 10.36346/sarjet.2022.v04i01.001

Run Xu

{"title":"The Numerical Simulation of Properties with High Angular Speed & Low Angular Acceleration in Three & Five Freedoms of Robotic Arm I","authors":"Run Xu","doi":"10.36346/sarjet.2022.v04i01.001","DOIUrl":"https://doi.org/10.36346/sarjet.2022.v04i01.001","url":null,"abstract":"In robot design and application the force and angle with angular speed is important so this study will model numerical simulation and discuss detail data to investigate their property. The force may increase as arm 1 angle increases whilst it may increase if angular speed increases in three freedoms. Meantime it will decrease if angular acceleration increases. It is found that with the angular speed increasing all three forces may increase whilst the angular acceleration will cause its increase too in five freedoms. From this value it is observed that F2 is prior one to ensure the strength and fatigue life then F2 is second one to estimate its strength whilst F3 may be neglected. The force may increase as arm 1 angle increases whilst it may increase if angular speed increases in three freedoms. Meantime it will decrease if angular acceleration increases. There is big distance to attain 5KN between the conditions. The effective factor turn to the force is F1>F3>F2 in three freedoms. The force may increase from 15N to 15KN and 18KN with F3, F2 and F1 in five freedoms. Among them F3 is the least one and F1 is the biggest one. The effect factor turn is F1 >F2 >F3. so the F1 and F2 is important one while F3 is neglected.","PeriodicalId":185348,"journal":{"name":"South Asian Research Journal of Engineering and Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116223503","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

The Effect of Youtube Advertisement on Consumer Purchase Intention of Online Transportation Brands in Bandung (Case Study on Grab and Gojek Companies) Youtube广告对万隆市线上交通品牌消费者购买意愿的影响(以Grab和Gojek公司为例)

South Asian Research Journal of Engineering and Technology Pub Date : 2021-04-30 DOI: 10.36346/sarjet.2021.v03i02.001

Mahir Pradana, I. .

引用次数: 0

Hawk Eye Technology Used In Cricket 鹰眼技术在板球中的应用

South Asian Research Journal of Engineering and Technology Pub Date : 2021-04-30 DOI: 10.36346/sarjet.2021.v03i02.002

L M Jayalath

引用次数: 3

Design of Agro-Education Tourism Accounting Information System 农教旅游会计信息系统的设计

South Asian Research Journal of Engineering and Technology Pub Date : 2020-12-24 DOI: 10.36346/sarjet.2020.v02i06.002

Anak Agung Gde Satia Utama

引用次数: 1

Performance Study of a Photovoltaic Integrated Solar Dryer for Drying Cabbage 白菜光伏一体化太阳能干燥机性能研究

South Asian Research Journal of Engineering and Technology Pub Date : 2019-11-02 DOI: 10.36346/SARJET.2019.V01I03.001

M. Ghosal

引用次数: 1

Analysis of Mobile Telecommunication Networks’ Coverage and Internet Capacity to Support mHealth Applications in Blantyre City: A Case of TNM and Airtel Networks 布兰太尔市支持移动医疗应用的移动电信网络覆盖和互联网容量分析:以TNM和Airtel网络为例

South Asian Research Journal of Engineering and Technology Pub Date : 2019-11-02 DOI: 10.36346/sarjet.2019.v01i03.002

A. Kaliwo, C. Mikeka, H. Gombachika, S. Kaunda, Chifundo Mlangeni

{"title":"Analysis of Mobile Telecommunication Networks’ Coverage and Internet Capacity to Support mHealth Applications in Blantyre City: A Case of TNM and Airtel Networks","authors":"A. Kaliwo, C. Mikeka, H. Gombachika, S. Kaunda, Chifundo Mlangeni","doi":"10.36346/sarjet.2019.v01i03.002","DOIUrl":"https://doi.org/10.36346/sarjet.2019.v01i03.002","url":null,"abstract":"Background: Different authors have argued about the importance of telehealth in Sub-Sahara Africa. Mobile health applications have become the most popular type of the telehealth services under exploration. The success in deploying these mHealth applications hinge mainly on the mobile network coverage and the Internet capacity. In this research, the coverage and capacity of two main mobile network providers were analyzed with respect to the location of health centres and the population in the focus areas. Base stations managed by Telekom Networks Malawi PLC and Airtel Malawi Limited were analyzed by collecting secondary data from Malawi Communications Regulatory Authority and primary data was collected through the conducting of Internet speed tests at a sample of five health centres. The download and upload speeds and network latency data sets were analyzed using one-sample t-test method to find the deviation between recommended data speeds for different types of medical data and the means from network sample data that collected from sample health centres. Additional data on population and location of health centres was collected from National Statistical Office, Blantyre District Health Office. Results: By drawing network coverage maps using ArcGIS, results show that there is adequate network coverage for 2G, 3G and 4G. At significances of p-value<0.05, using the 95% confidence interval one sample t-test, and by observing the mean differences the analysis shows that both networks can handle remote sensing data, emails and transfer of bio-signals like electromyography, electrocardiogram and electroencephalogram at all five-sample health centres. Conclusion: The data analysis shows weakness in both download and upload speeds at all sample health centres in IP telephony and High Definition video conferencing data.","PeriodicalId":185348,"journal":{"name":"South Asian Research Journal of Engineering and Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121473443","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