Engineering and Technology Journal最新文献_第9页

IMPROVED FISHING TECHNOLOGY FOR FISHERMEN EMPOWERMENT 改进捕鱼技术，增强渔民能力

Engineering and Technology Journal Pub Date : 2023-11-30 DOI: 10.47191/etj/v8i11.17

Juliana, Domu Simbolon, Darmawan, Vita Rumanti Kurniawati

引用次数: 0

OPTIMIZATION OF THERMO-FLOW IN A SOLAR FOOD DEHYDRATOR USING COMPUTATIONAL TECHNIQUES 利用计算技术优化太阳能食品脱水机中的热流

Engineering and Technology Journal Pub Date : 2023-11-30 DOI: 10.47191/etj/v8i11.16

K.E. Akpan, A. A. Okon, W. A. Akpan, I. Nyaudo

{"title":"OPTIMIZATION OF THERMO-FLOW IN A SOLAR FOOD DEHYDRATOR USING COMPUTATIONAL TECHNIQUES","authors":"K.E. Akpan, A. A. Okon, W. A. Akpan, I. Nyaudo","doi":"10.47191/etj/v8i11.16","DOIUrl":"https://doi.org/10.47191/etj/v8i11.16","url":null,"abstract":"A solar food dehydrator converts solar energy into heat required to remove moisture from food. This study involved development of an optimized design for a solar dehydrator using computational techniques. A computer-aided design of six (6) different configurations of the dehydrator was developed, and a remotely-installed heat capture device was modelled and analysed using MATLAB. The results show that the Parabolic Trough Collector (PTC) could be used in effectively transferring heat remotely to a dehydrator. The temperature of air leaving the heat exchanger increases in proportion to the increase in the temperature of the heating fluid entering the heat exchanger. Computational Fluid Dynamics (CFD) in Ansys Fluent was employed to aid in the study of airflow and temperature distribution. The hot air was simulated at 2 m/s and 350 K inlet conditions. The CFD simulation results showed significant variations in the air velocity distribution and temperature for different configurations of the dehydrator. The back inflow - front outflow configuration provided the most uniform distribution of heated air in the drying chamber, with minimal variation on each tray. This uniformity was also observed in the distribution of static temperature. The back inflow – side outflow configuration showed a similar performance in flow and temperature distribution. However, the bottom inflow – top outflow and bottom inflow – front outflow configurations showed uneven velocity and temperature distribution inside the drying chamber. Supply of airflow across the trays horizontally provides best airflow and temperature distribution in solar dehydrators and thus highly recommended.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"49 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139206730","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 THE UTILIZATION OF COMBUSTION WASTE ASH FROM PALM KERNEL SHELL AS A SUBSTITUTE FOR FINE AGGREGATES IN CEMENT TREATED BASE CLASS B 利用棕榈仁壳燃烧废灰替代水泥处理的 B 级基层细骨料的分析

Engineering and Technology Journal Pub Date : 2023-11-30 DOI: 10.47191/etj/v8i11.18

Utami Sylvia Lestari, Fauzi Rahman, Nor Izha Subagja, Muhammad Khairil Mukmin, Maulana Ivan Aulia Arham, Dewi Puspita

{"title":"ANALYSIS OF THE UTILIZATION OF COMBUSTION WASTE ASH FROM PALM KERNEL SHELL AS A SUBSTITUTE FOR FINE AGGREGATES IN CEMENT TREATED BASE CLASS B","authors":"Utami Sylvia Lestari, Fauzi Rahman, Nor Izha Subagja, Muhammad Khairil Mukmin, Maulana Ivan Aulia Arham, Dewi Puspita","doi":"10.47191/etj/v8i11.18","DOIUrl":"https://doi.org/10.47191/etj/v8i11.18","url":null,"abstract":"The Cement Treated Base Class B is a layer of pavement located between the lower base layer and the surface layer. This pavement layer uses fine aggregate materials (sand), palm kernel ash, and cement as its binding materials. The palm kernel ash is the main solid waste product from boiler combustion and can be utilized as a sand composition reducer in concrete production due to its chemical properties, which are nearly similar to cement. This research aims to determine the characteristics of the base mixture by utilizing palm kernel ash when combined in the Cement Treated Base Class B mixture for flexible pavement. With the specified composition, it is expected that when compression strength testing is conducted, the obtained compression strength values will meet the specified specifications. After testing, it was found that the Cempaka sand type is more effective and economical to use because its compression strength value almost meets the specified range of 35 kg/cm2 to 45 kg/cm2, which means it falls within the standard compression strength specification.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139200246","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

Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete 活性粉末水下混凝土的动态特性评估与优化

Engineering and Technology Journal Pub Date : 2023-11-29 DOI: 10.30684/etj.2023.143193.1566

Doha M. Alsaffar, B. Al-Shathr, Suhair K. Abed

{"title":"Dynamic Characterization Assessment and Optimization of Reactive Powder Underwater Concrete","authors":"Doha M. Alsaffar, B. Al-Shathr, Suhair K. Abed","doi":"10.30684/etj.2023.143193.1566","DOIUrl":"https://doi.org/10.30684/etj.2023.143193.1566","url":null,"abstract":"This study investigates the dynamic properties of Reactive Powder Underwater Concrete (RPUWC), a novel composite integrating attributes of Reactive Powder Concrete and underwater cast concrete. The study focuses on assessing the impact resistance, dynamic modulus of elasticity, rigidity, and Poisson's ratio. The influence of micro steel fibers (MS) at different volume fractions (1%, 1.25%, and 1.5%) and different anti-washout admixture (AWA) dosages (0.5 %, 0.7%, and 0.9%) are examined. The findings indicate that increasing the MS content improves crack resistance and energy absorption, resulting in a substantial 155.6% enhancement in the first crack resistance when using 1.5% MS. Additionally, ultimate resistance improves by 158%. Furthermore, there are significant increases in the dynamic and modulus of rigidity as the MS percentage rises. The impact of AWA is rather limited, with a reduction in the dynamic modulus of 18.3% for 0.7% AWA and 30% for 0.9% AWA. Likewise, the modulus of rigidity decreases by 13% for 0.7% AWA and 23.9% for 0.9% AWA. Moreover, strong positive correlations between non-destructive testing (NDT) and ASTM C 215 equations are observed. This investigation addresses a significant knowledge gap, shedding light on optimizing underwater structures' performance by comprehending their dynamic response under varied MS and AWA ratios.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139214388","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

FORCED OSCILLATIONS OF A PLATE CONSISTING OF ELLIPSES AND CIRCLES OF VARIOUS SIZES WITH COMPLEX CONTOURS ON MACHINE PARTS 由椭圆和圆组成的板块在机械零件上的受力摆动，这些板块大小不一，轮廓复杂

Engineering and Technology Journal Pub Date : 2023-11-28 DOI: 10.47191/etj/v8i11.15

Aliyev Balakhan Haji oglu

引用次数: 0

APPLYING PRECISION INTO PROACTIVE MAINTENANCE IN NIGERIA ELECTRIC POWER INDUSTRY 将精确性应用于尼日利亚电力行业的主动维护

Engineering and Technology Journal Pub Date : 2023-11-28 DOI: 10.47191/etj/v8i11.13

W. A. Akpan, I. Nyaudo

{"title":"APPLYING PRECISION INTO PROACTIVE MAINTENANCE IN NIGERIA ELECTRIC POWER INDUSTRY","authors":"W. A. Akpan, I. Nyaudo","doi":"10.47191/etj/v8i11.13","DOIUrl":"https://doi.org/10.47191/etj/v8i11.13","url":null,"abstract":"Power station plants and equipments are required to run for well beyond their intended lifetime. Opening up machines for inspections is expensive and owners need to consider all relevant information in making the decision. Problems in power station machine which reduce machine efficiency and reliability such as shaft misalignment, deposits on blades can be detected and monitoring using monitoring by performance analysis. This paper outlines some of the methods using precision techniques, which have contributed to proactive maintenance in the world - class- precision maintenance. Some of the tools used in this case are outlined and recommends that proper use of these tools in the Nigerian electric power stations could improve maintenance efforts and increase reliability, availability and customers’ satisfactions. Hence this paper can be legitimised by training, procedures and changes in human thinking and behaviours and largely getting to the roots of the errors. Root cause analysis is the tool designed to follow mechanism back to physical roots and probably eliminate it by training, procedures and changes which will form the basis for precision based reliability and knowing that predictive technology is the key to breaking error chains","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139221547","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

RESEARCH ON THE INFLUENCE OF SOME FACTORS ON THE DEPARTURE ANGLE OF WARHEADS WHEN FIRING A SERIES 研究发射一系列弹头时，某些因素对弹头偏离角的影响

Engineering and Technology Journal Pub Date : 2023-11-26 DOI: 10.47191/etj/v8i11.14

Vo Van Bien, Hoang Duy Vinh, Tran Van Manh, Nguyen Minh Phu

引用次数: 0

State-of-the-Art Review into Signal Processing and Artificial Intelligence-based Approaches Applied in Gearbox Defect Diagnosis 变速箱缺陷诊断中应用的信号处理和人工智能方法的最新进展回顾

Engineering and Technology Journal Pub Date : 2023-11-23 DOI: 10.30684/etj.2023.142462.1535

Asaad Dubaish, Alaa Jaber

引用次数: 0

A Review on Alginate-Nanoparticle as a Potential Tool for Managing Water Pollution 海藻酸盐-纳米粒子作为水污染管理的潜在工具综述

Engineering and Technology Journal Pub Date : 2023-11-21 DOI: 10.30684/etj.2023.143276.1574

D. Lakshmi, K. Radha, T. Azeez, Shanmugam Munisamy, Mustafa H. Al-Furaiji

{"title":"A Review on Alginate-Nanoparticle as a Potential Tool for Managing Water Pollution","authors":"D. Lakshmi, K. Radha, T. Azeez, Shanmugam Munisamy, Mustafa H. Al-Furaiji","doi":"10.30684/etj.2023.143276.1574","DOIUrl":"https://doi.org/10.30684/etj.2023.143276.1574","url":null,"abstract":", biocompatibility, viscoelasticity, superabsorbancy, softness, fluffiness, and biodegradability. Alginate-based hydrogels can incorporate much water due to their hydrophilic nature.Water pollution often changes groundwater, resulting in the inability to use it. Alginate-based gels remove pollutants through adsorption/desorption, transport, and other conventional techniques. Alginate-based hydrogels can incorporate much water due to their hydrophilic nature. Their composites have been demonstrated to control different water pollutants like inorganic, organic, and pathogenic microbes from various water streams in unique structural forms like a flat membrane, hollow fibber, microspheres, gels, foams, nanofibers, Calcium and sodium alginate-based hydrogel along with other materials like activated charcoal, zeolite, bentonite, graphene, biochars and composites have been proved to be effective blend in managing heavy metal pollutants.This review summarizes the results obtained from the sustainable removal of contaminants from water through the alginate-based hydrogel and the challenges associated with it for practical application in the future.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"135 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139251125","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

Single Variable Thick Plate Buckling Problems Using Double Finite Sine Transform Method 使用双有限正弦变换方法解决单变量厚板屈曲问题

Engineering and Technology Journal Pub Date : 2023-11-19 DOI: 10.30684/etj.2023.142504.1537

Charles Ike

引用次数: 0