Current Journal: International Journal Applied Technology Research最新文献_第2页

Comparative Analysis of the Performance of the Thermal Pasteurization System Using Ohmic Heating Method with an Electric Heater on Mango Puree 使用欧姆加热法和电加热器对芒果泥进行热巴氏杀菌的性能比较分析

Current Journal: International Journal Applied Technology Research Pub Date : 2024-02-05 DOI: 10.35313/ijatr.v5i1.146

Yudhy Kurniawan, W. Wardika, Ferry Sugara, M. I. Alhamid, A. Ardiyansyah

{"title":"Comparative Analysis of the Performance of the Thermal Pasteurization System Using Ohmic Heating Method with an Electric Heater on Mango Puree","authors":"Yudhy Kurniawan, W. Wardika, Ferry Sugara, M. I. Alhamid, A. Ardiyansyah","doi":"10.35313/ijatr.v5i1.146","DOIUrl":"https://doi.org/10.35313/ijatr.v5i1.146","url":null,"abstract":"This study explains the comparative analysis of performance in the thermal pasteurization system of the ohmic heating method with the electric heater in mango puree. The goal is to find out which thermal pasteurization method is better and more efficient. The method used for this study is to compare the two thermal pasteurization methods from the performance obtained, heating time, electrical power and electricity consumption costs. In the pasteurization process, the product is heated not exceeding 70 oC in the ohmic tube with an electric current on an electrode with a thickness of 4 mm attached to the end of the ohmic tube, while pasteurization of the product electric heater is heated in a double jacket tube equipped with an electric heater. The results of the analysis were obtained for the ohmic heating method the efficiency value was 78%, while for the method with an electric heater the efficiency value was 4%, the heating time of the ohmic heating method is 555 seconds, while the heating time of the electric heater method is 1500 seconds, for electric power in the ohmic heating method is 224.59 watts, while in the electric heater method an electric power of 1730.2 watts is obtained, and the cost of electricity consumption of the ohmic heating method is Rp.1,498.33,-/month, while the electric heater method costs electricity consumption of Rp.31,407.26,-/month.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"5 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139806108","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 Effect of Pineapple Crude Enzymes and Fermentation Time on The Decaffeination Process of Robusta Coffee 菠萝粗酵素和发酵时间对罗布斯塔咖啡脱咖啡因过程的影响

Current Journal: International Journal Applied Technology Research Pub Date : 2024-02-05 DOI: 10.35313/ijatr.v5i1.128

Tri Hariyadi, Tifa Paramitha, Dwi Irmawati, Salwa Salsabila

{"title":"The Effect of Pineapple Crude Enzymes and Fermentation Time on The Decaffeination Process of Robusta Coffee","authors":"Tri Hariyadi, Tifa Paramitha, Dwi Irmawati, Salwa Salsabila","doi":"10.35313/ijatr.v5i1.128","DOIUrl":"https://doi.org/10.35313/ijatr.v5i1.128","url":null,"abstract":"The decaffeination of robusta coffee can be done through fermentation with a crude enzyme containing bromelain enzyme from pineapple. The study aims to determine the activity of the bromelain enzyme by the Kunitz method, the effect of fermentation time and crude enzyme concentration on the decaffeination process, and the characteristics of coffee before and after fermentation using FTIR. The fermentation time was varied from 6 to 36 hours and the crude enzyme concentration was varied from 10 to 80%. The activity of the bromelain enzyme was 36 U/ml. Fermentation time affects the decaffeination process, wherein the longer the fermentation time from 6 hours to 36 hours obtained caffeine content from 2.39% to 0.07%. Besides that, the crude enzyme concentration affects the decaffeination process, which obtained the lowest caffeine content or percent decaffeination at the crude extract concentration of 80% (v/v). FTIR results showed that the decaffeination process affected the reduction of caffeine in coffee samples. It can be shown from the increase in the %T value of the C-N functional group from 40.731 to 54.85.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"3 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139803018","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 Selection of Alternative Materials Outer Support Solar Water Heater 太阳能热水器外支架替代材料的选择分析

Current Journal: International Journal Applied Technology Research Pub Date : 2023-10-01 DOI: 10.35313/ijatr.v5i1.98

D. Muliastri, Aldi Alfares, Emsa Ayudia Putri

{"title":"Analysis of Selection of Alternative Materials Outer Support Solar Water Heater","authors":"D. Muliastri, Aldi Alfares, Emsa Ayudia Putri","doi":"10.35313/ijatr.v5i1.98","DOIUrl":"https://doi.org/10.35313/ijatr.v5i1.98","url":null,"abstract":"In producing a product, the Manufacturing Industry always prioritizes safety, quality, and profit. One product that prioritizes these criteria is Outer Support on Solar Water Heaters. Currently, the material used in the outer support of the solar water heater is SS 304, the SS 304 material is considered too expensive, so the profits obtained by the manufacturing industry are very small. In addition, SS304 material from year to year is getting harder and harder to find. In this study, an analysis of the selection of alternative outer support materials for solar water heaters was carried out in order to obtain materials that can fulfill the outer support function at a relatively cheap price, do not reduce the outer support function and are easy to obtain or many on the market. The method used in this study uses the Analytical Hierarchy Process (AHP) and CES edupack software as the process of selecting materials. In this study, several tests of mechanical properties were carried out, namely tensile tests, hardness tests, and corrosion resistance tests to determine the mechanical properties of the material, and simulations of selected materials were carried out using Solidworks software, with the aim of knowing the maximum stress value and safety factor. The results obtained from this study obtained an alternative material, namely AISI 201 for the outer support. The results of the hardness test obtained the best hardness value in AISI 201 of 177.17 VHN. The results of the tensile test obtained a yield strength value of 390.35 MPa on AISI 201 material","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139329244","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

Numerical Study of Thermal Comfort Evaluation in Naturally Ventilated Classrooms 自然通风教室热舒适度评估的数值研究

Current Journal: International Journal Applied Technology Research Pub Date : 2023-09-30 DOI: 10.35313/ijatr.v4i2.131

BowoYuli Prasetyo, Rizki Muliawan, Andini Luthfiyyah Afifah, Fujen Wang

引用次数: 0

Efforts of Community Adaptation to Deal with Rob Floods on The Meulaboh Coastline 社区为应对 Meulaboh 海岸线洪灾所做的努力

Current Journal: International Journal Applied Technology Research Pub Date : 2023-09-30 DOI: 10.35313/ijatr.v4i2.121

Dian Febrianti, Z. Zakia, M. Safriani, M. F. Ikhwali, Muhammad Zakki Husaini, Wisnu Prayogo, N. S. Ersa, Teuku Farizal

{"title":"Efforts of Community Adaptation to Deal with Rob Floods on The Meulaboh Coastline","authors":"Dian Febrianti, Z. Zakia, M. Safriani, M. F. Ikhwali, Muhammad Zakki Husaini, Wisnu Prayogo, N. S. Ersa, Teuku Farizal","doi":"10.35313/ijatr.v4i2.121","DOIUrl":"https://doi.org/10.35313/ijatr.v4i2.121","url":null,"abstract":"Most of Indonesia's territory is geographically located in the coastal area. One of the areas located in the coastal area is the city of Meulaboh, West Aceh Regency. The coastal area of Meulaboh often experiences tidal flooding, especially the coastal area of Gampong Pasir and has a quite severe impact compared to other areas on the coast of Meulaboh. Based on this background, this study aims to identify community adaptation to the tidal flood event based on community responses in the coastal area and identify efforts to mitigate the impact of tidal floods that have been carried out by the community and the government. The analytical methods used are descriptive quantitative and qualitative analysis methods, as well as cross-tabulation analysis related to community adaptation variables, which include community characteristics, the impact of tidal floods on the residential environment, identification of tidal flood conditions and efforts to mitigate the impact of tidal floods, carried out by the community and the government. The results showed that the people of the coastal area of Meulaboh were able to make efforts to deal with tidal floods in the form of repairing road networks, residential houses, drainage channels, places of worship (mosques), village offices, and clean water and sanitation systems. The government's efforts to deal with tidal floods are carried out by making barriers to protect the coast through tetrapod. These results are important to take future action to deal with tidal floods.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139332640","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

Numerical Study of Aerodynamic Characteristics of Airflow Around NACA 0012 and NACA 4412 Airfoils at Re = 170000 Re = 170000 条件下 NACA 0012 和 NACA 4412 翼面周围气流的气动特性数值研究

Current Journal: International Journal Applied Technology Research Pub Date : 2023-09-30 DOI: 10.35313/ijatr.v4i2.134

M. F. Soetanto, Sugianto Sugianto, Budi Hartono, M. R. Z

{"title":"Numerical Study of Aerodynamic Characteristics of Airflow Around NACA 0012 and NACA 4412 Airfoils at Re = 170000","authors":"M. F. Soetanto, Sugianto Sugianto, Budi Hartono, M. R. Z","doi":"10.35313/ijatr.v4i2.134","DOIUrl":"https://doi.org/10.35313/ijatr.v4i2.134","url":null,"abstract":"In this paper, a numerical study of the aerodynamic characteristics using the CFD method of the two-dimensional flow around NACA 0012 and NACA 4412 airfoils at -10 degrees to 25 degrees of angle of attack operating at Re 170000 is presented. The formation of flow patterns, pressure distribution, pressure coefficient (Cp), lift coefficient (Cl), drag coefficient (Cd), moment coefficient (Cm), and skin friction coefficient distribution along the chord The Y+ wall value curve is a validation that the mesh formation is in accordance with the requirements, i.e., a Y+ wall value below 10 for viscous dominant flows and for Spalart-Allmaras turbulent model viscous. The geometry of NACA 0012 and NACA 4412 airfoils is created using SolidWork, and CFD analysis is carried out using Ansys Workbench 2018. The results show that the stall condition at NACA 0012 is at 15 degrees of angle of attack, while at NACA 4412 it is at 16 degrees. Under stall conditions, Cl of NACA4412 is approximately 13 percent higher than NACA 0012, while the value of Cd shows almost the same value for both NACA 0012 and NACA 4412.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"139 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139333871","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

Agglomeration Decrement from Nanocellulose Synthesis by adding PVA Capping Agent 添加 PVA 封端剂减少纳米纤维素合成过程中的团聚现象

Current Journal: International Journal Applied Technology Research Pub Date : 2023-09-30 DOI: 10.35313/ijatr.v4i2.111

Endang Kusumawati, I. Hidayatulloh, Lidya Elizabeth

引用次数: 0

Experimental Investigation on PM10 and PM2.5 Concentrations in North Bandung 万隆北部 PM10 和 PM2.5 浓度实验研究

Current Journal: International Journal Applied Technology Research Pub Date : 2023-09-30 DOI: 10.35313/ijatr.v4i2.124

Ismail Wellid, Nita Nurfitriani, M. A. Falahuddin, Luga Martin Simbolon, Cecep Sunardi, Neneng Nuryati, Mohamad Firdaus bin Sukri

{"title":"Experimental Investigation on PM10 and PM2.5 Concentrations in North Bandung","authors":"Ismail Wellid, Nita Nurfitriani, M. A. Falahuddin, Luga Martin Simbolon, Cecep Sunardi, Neneng Nuryati, Mohamad Firdaus bin Sukri","doi":"10.35313/ijatr.v4i2.124","DOIUrl":"https://doi.org/10.35313/ijatr.v4i2.124","url":null,"abstract":"North Bandung is an area where there are several tourist attractions, including the Dago Dream Park. The main road to several locations in North Bandung is via the road in front of Terminal Dago. For this reason, the purpose of this study was to collect data on PM2.5 and PM10 concentrations at both locations, namely in front of Terminal Dago and Dago Dream Park. Data collection was carried out for seven days, from Monday to Sunday, from 08.00 to 16.00 local time. To evaluate air quality in these two places, the national standard, namely PPRI No. 22 of 2021 and international standards from WHO were applied. The measurement results show that the concentrations of PM2.5 and PM10 in these two locations are still within the national standard. Meanwhile, when evaluated with WHO standards, PM10 concentrations in both locations are still within standard, but for PM2.5, there are several days where the air quality is out of the standard. The average concentrations of PM2.5 and PM10 during the 7 days of measurement at Terminal Dago are 19.9 μg/m3 and 21.6 μg/m3, respectively. While the average concentration of PM2.5 and PM10 during 1 week of data collection were 18.9 μg/m3 and 19.9 μg/m3, respectively. This means that the concentration of PM2.5 and PM10 at Terminal Dago is slightly higher than that of at Dago Dream Park. In addition, based on an evaluation using national standards, Dago Dream Park tourist attractions still have good air quality and are safe for local residents and tourists. From the data recorded at the Health Centre (Puskesmas), the number of ARI cases in the two locations in 2020 and 2021 is relatively not much different.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"267 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139333886","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

Effect of Fermentation Time on the Production of Ambon Banana Weevil Waste Bioethanol 发酵时间对安汶香蕉象鼻虫废生物乙醇生产的影响

Current Journal: International Journal Applied Technology Research Pub Date : 2023-04-06 DOI: 10.35313/ijatr.v4i1.110

H. Budiastuti, Salma Indana Zulfa, Nova Sihombing, H. Haryadi, Emma Hermawati Muhari, B. Soeswanto, E. Widiastuti, P. Pullammanappallil

{"title":"Effect of Fermentation Time on the Production of Ambon Banana Weevil Waste Bioethanol","authors":"H. Budiastuti, Salma Indana Zulfa, Nova Sihombing, H. Haryadi, Emma Hermawati Muhari, B. Soeswanto, E. Widiastuti, P. Pullammanappallil","doi":"10.35313/ijatr.v4i1.110","DOIUrl":"https://doi.org/10.35313/ijatr.v4i1.110","url":null,"abstract":"The increase in population in Indonesia is directly proportional to the increase in the use of vehicles which results in an increase in fuel demand. The amount of fossil fuels continues to decrease and cannot be renewed, so alternative energy is needed, one of which is bioethanol. This study aims to make bioethanol from banana weevil waste, to determine the effect of fermentation time on the concentration of banana weevil bioethanol and to determine the concentration of bioethanol after going through the purification stage. The production of banana weevil bioethanol begins with the process of cutting the banana weevil which is then mashed with the help of water and then squeezed and starch is obtained and then hydrolyzed with the addition of glucoamylase and alpha-amylase enzymes for further anaerobic fermentation with the help of Saccharomyces cerevisiae with a concentration of 25%. In this study, variations of fermentation time were carried out for 5, 7, 9, and 10 days. The best fermentation time was obtained from 9 days of fermentation, where the conversion of glucose to bioethanol was 51%. The results of the analysis using a refractometer showed that the concentration of bioethanol obtained was 16.20% (v) which was obtained from fermentation for 9 days and purification using a rotary evaporator at a pressure of 360 mbar and a temperature of 500C.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116416839","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

Design of Hybrid Energy System for Railway Application (Case Study of People Mover System in Doha, Qatar) 铁路应用混合能源系统设计(以卡塔尔多哈客运系统为例)

Current Journal: International Journal Applied Technology Research Pub Date : 2023-04-03 DOI: 10.35313/ijatr.v4i1.112

{"title":"Design of Hybrid Energy System for Railway Application (Case Study of People Mover System in Doha, Qatar)","authors":"","doi":"10.35313/ijatr.v4i1.112","DOIUrl":"https://doi.org/10.35313/ijatr.v4i1.112","url":null,"abstract":"This paper presents the conceptual design of hybrid energy system used in railway application. The hybrid system with batteries and energy storage double-layer capacitor is a new technology that is used under extreme climatic conditions, especially in daytime temperature up to 50°C, high relative humidity, dust and heavy rain. It is a combination of double-layer capacitors and traction batteries. It draws power both externally and from braking energy. In order to reduce CO2 emissions to the environment, energy-saving drives and energy storage are used. Also, in public transportation, Sitras Hybrid Energy System (HES), hybrid energy storage system for trams, has been developed which combines a double-layer capacitor with a nickel-metal hydride battery. The storage not only allows driving without overhead lines, it also enables braking energy to be recovered. A reliable cooling system is required to ensure that the performance of the battery and the capacitor storage is maintained for as long as possible. The results of finite element model showed the robustness for railway application. The computational model refers to proof of static and dynamic strength in accordance with EN12663. A cooling system for a tram using this innovative technology was designed and qualified for the \"Qatar Education City People Mover System (PMS)\" project.","PeriodicalId":382187,"journal":{"name":"Current Journal: International Journal Applied Technology Research","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115698705","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