Pub Date : 2024-06-02DOI: 10.37275/nasetjournal.v4i1.53
Dian Arsanti Palupi, Lili Sugiarti, Eni Yulianti
Analgesics are drugs that selectively reduce pain in the central nervous system or peripheral pain mechanisms without significantly changing consciousness. This study aims to determine the analgesic activity of a combination of dry extracts of meniran leaves (Phyllanthus niruri l.) and moringa leaves (Moringa oleifera l.) against Swiss Webster rats with chemical induction methods. This research proves the presence of secondary metabolite content in the dry extract of meniran leaves and moringa leaves which have analgesic activity. The research used 30 male Swiss Webster rats divided into 5 groups. Group 1 is the negative control (CMC-Na 0.5%), group 2 is the positive control (diclofenac Na), group 3 (Dry extract of meniran leaves), group 4 (Dry extract of moringa leaves) and Group 5 (Combination of dry extracts). meniran and moringa leaves). Each was given 1 mL of 1% acetic acid induction chemical stimulation, then the writhing response was observed and recorded at 5-minute intervals for 30 minutes. The results showed that the K3 group combined dry extract of meniran leaves (Phyllanthus niruri L.) and moringa leaves (Moringa oleifera L) is not statistically significantly different from the positive control diclofenac sodium, p-value = 0.183. In conclusion, dry extract of meniran leaves (Phyllanthus niruri L.) and Moringa leaves (Moringa oleifera L.) has been proven to contain secondary metabolites of flavonoids, alkaloids, tannins, and saponins which have analgesic activity.
{"title":"Analgesic Activity Combination of Dry Extract of Meniran Leaves (Phyllanthus niruri L.) and Moringa Leaves (Moringa oleifera L.) Using the Chemical Induction Method: Invivo Study","authors":"Dian Arsanti Palupi, Lili Sugiarti, Eni Yulianti","doi":"10.37275/nasetjournal.v4i1.53","DOIUrl":"https://doi.org/10.37275/nasetjournal.v4i1.53","url":null,"abstract":"Analgesics are drugs that selectively reduce pain in the central nervous system or peripheral pain mechanisms without significantly changing consciousness. This study aims to determine the analgesic activity of a combination of dry extracts of meniran leaves (Phyllanthus niruri l.) and moringa leaves (Moringa oleifera l.) against Swiss Webster rats with chemical induction methods. This research proves the presence of secondary metabolite content in the dry extract of meniran leaves and moringa leaves which have analgesic activity. The research used 30 male Swiss Webster rats divided into 5 groups. Group 1 is the negative control (CMC-Na 0.5%), group 2 is the positive control (diclofenac Na), group 3 (Dry extract of meniran leaves), group 4 (Dry extract of moringa leaves) and Group 5 (Combination of dry extracts). meniran and moringa leaves). Each was given 1 mL of 1% acetic acid induction chemical stimulation, then the writhing response was observed and recorded at 5-minute intervals for 30 minutes. The results showed that the K3 group combined dry extract of meniran leaves (Phyllanthus niruri L.) and moringa leaves (Moringa oleifera L) is not statistically significantly different from the positive control diclofenac sodium, p-value = 0.183. In conclusion, dry extract of meniran leaves (Phyllanthus niruri L.) and Moringa leaves (Moringa oleifera L.) has been proven to contain secondary metabolites of flavonoids, alkaloids, tannins, and saponins which have analgesic activity.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"21 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141273168","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}
Pub Date : 2024-03-29DOI: 10.37275/nasetjournal.v4i1.47
Nafikhatun Ashfiyaeni, Ninik Agustin, Mochamad Taufiqurrochman Abdul Aziz Zein
A good user interface design on a website will make users feel at home using the website. On the contrary, a bad user interface will make users quickly leave the site or bounce rate. User involvement in the system development process will have a positive and significant impact on satisfaction with a system. The objective of this study is to obtain a new user interface that can overcome the usability problems in the web design of the Cilacap Entrance. To meet user needs, this study uses the human centered design (HCD) method for web redesign. User identification and interviews were conducted to obtain user context data. While user personas are used to determine user needs. In addition, A/B testing was used by applying the results of heatmap analysis and data from Google Analytics and Google Web Console to compare the results before and after the interface redesign. The results showed an increase in the number of users, longer visits, more content exploration, and high activity on the site. This means that the redesigned interface was successful in improving user experience, increasing user activity, and maintaining user interest in the Cilacap Entrance website.
{"title":"User Interface Optimization Using Human Centered Design Method to Improve Website Usability (Case Study: Entrance Cilacap)","authors":"Nafikhatun Ashfiyaeni, Ninik Agustin, Mochamad Taufiqurrochman Abdul Aziz Zein","doi":"10.37275/nasetjournal.v4i1.47","DOIUrl":"https://doi.org/10.37275/nasetjournal.v4i1.47","url":null,"abstract":"A good user interface design on a website will make users feel at home using the website. On the contrary, a bad user interface will make users quickly leave the site or bounce rate. User involvement in the system development process will have a positive and significant impact on satisfaction with a system. The objective of this study is to obtain a new user interface that can overcome the usability problems in the web design of the Cilacap Entrance. To meet user needs, this study uses the human centered design (HCD) method for web redesign. User identification and interviews were conducted to obtain user context data. While user personas are used to determine user needs. In addition, A/B testing was used by applying the results of heatmap analysis and data from Google Analytics and Google Web Console to compare the results before and after the interface redesign. The results showed an increase in the number of users, longer visits, more content exploration, and high activity on the site. This means that the redesigned interface was successful in improving user experience, increasing user activity, and maintaining user interest in the Cilacap Entrance website.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"30 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366724","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}
Pub Date : 2023-12-15DOI: 10.37275/nasetjournal.v4i1.44
I. K. Sukadana, I Gusti Komang Dwijana, I Putu Widiarta
Analyze the characteristics of gas fuel from arak Bali, like shape and flame speed. Test characteristics such as methanol and ethanol content material gas from arak Bali, after it tested the gas fuel combustion characteristics of arak Bali such as the shape and speed of flame. Testing characteristics such as the content of methane and ethanol gas from arak Bali performed in the forensic laboratory while testing the ignition characteristics of the shape and speed of fuel from evaporating arak Bali done using a helle-shaw cell combustion chamber model. Air mixture ratio variations with gas fuel from arak Bali is 24/1, 25/1, 26/1, 27/1, 28/1, 29/1, 30/1 and 31/1. The observed effect is the shape and speed of the premixed flame propagation in the helle-shaw cell combustion chamber model. The results of the study, the moisture content of the basic ingredients of gas fuel arak Bali consisting of 40% methanol and 60% ethanol. Gas fuel from arak Bali has a stoichiometry air-fuel ratio of 30/1. Getting closer to the stoichiometry air-fuel ratio, flame color changes from reddish color faded to red, reddish blue, blue and bright blue last. The maximum speed of propagation of fire occurring in stoichiometry air-fuel ratio is 328.33 cm/sec.
分析 arak Bali 气体燃料的形状和火焰速度等特性。在测试了甲烷和乙醇含量物质后，测试来自巴厘岛的甲烷气体燃料的燃烧特性，如火焰的形状和速度。在法医实验室测试从巴厘岛蒸发的甲烷和乙醇气体中提取的燃料的燃烧特性，如火焰的形状和速度。来自巴厘岛蒸馏酒的气体燃料的空气混合比变化为 24/1、25/1、26/1、27/1、28/1、29/1、30/1 和 31/1。观察到的影响是氦肖燃烧室模型中预混合火焰传播的形状和速度。研究结果表明，气体燃料 arak Bali 的基本成分含水量为 40% 甲醇和 60% 乙醇。来自 arak Bali 的气体燃料的空气燃料比为 30/1。火焰颜色从淡红色逐渐变为红色、红蓝色、蓝色和亮蓝色。在空气与燃料的比例为 1：30 时，火焰的最大传播速度为 328.33 厘米/秒。
{"title":"The Use of Arak Bali as a Fuel Influence on Fire Characteristics of Combustion","authors":"I. K. Sukadana, I Gusti Komang Dwijana, I Putu Widiarta","doi":"10.37275/nasetjournal.v4i1.44","DOIUrl":"https://doi.org/10.37275/nasetjournal.v4i1.44","url":null,"abstract":"Analyze the characteristics of gas fuel from arak Bali, like shape and flame speed. Test characteristics such as methanol and ethanol content material gas from arak Bali, after it tested the gas fuel combustion characteristics of arak Bali such as the shape and speed of flame. Testing characteristics such as the content of methane and ethanol gas from arak Bali performed in the forensic laboratory while testing the ignition characteristics of the shape and speed of fuel from evaporating arak Bali done using a helle-shaw cell combustion chamber model. Air mixture ratio variations with gas fuel from arak Bali is 24/1, 25/1, 26/1, 27/1, 28/1, 29/1, 30/1 and 31/1. The observed effect is the shape and speed of the premixed flame propagation in the helle-shaw cell combustion chamber model. The results of the study, the moisture content of the basic ingredients of gas fuel arak Bali consisting of 40% methanol and 60% ethanol. Gas fuel from arak Bali has a stoichiometry air-fuel ratio of 30/1. Getting closer to the stoichiometry air-fuel ratio, flame color changes from reddish color faded to red, reddish blue, blue and bright blue last. The maximum speed of propagation of fire occurring in stoichiometry air-fuel ratio is 328.33 cm/sec.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"66 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139000043","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}
Pub Date : 2023-10-17DOI: 10.37275/nasetjournal.v4i1.43
Karyanto Herlambang, None Pradipta Dwi Briyantama
Measurement of pipe to soil potential in a cathodic protection system is something that must be done which aims to monitor the performance of the installed cathodic protection system. The main measuring tool in measuring pipe to soil potential is the reference electrode. The stability of the reference electrode is important as a validation of the measurement results. So far, the stability of the reference electrode is very difficult to maintain due to frequent changes caused by the environment, especially for permanent reference electrodes that are buried in the underground or installed in seawater. Permanent reference electrode sensors commonly used in seawater is the Ag/AgCl reference electrode, but in fact the Ag/AgCl reference electrode is generally unstable and must be stabilized with a KCl solution and other problems have not been produced in Indonesia. This research will be carried out by adding a conductive layer to the Ag/AgCl electrode so that its stability can be increased. The sensor manufacturing process starts from pretreatment, electrolysis and product characterization. The results of the best coating thickness and weight gain experiments showed by the highest voltage variations and time variations (4000mV and 60 minutes). The presence of conductive solid material increases corrosion resistance from 0.00391 mm/year to 0.19549 mm/year and increases the stability of the Ag/AgCl layer ± 5 mV.
{"title":"Effect of Conductive Coating on Silver/Silver Chloride Electrodes for Cathodic Protection Application","authors":"Karyanto Herlambang, None Pradipta Dwi Briyantama","doi":"10.37275/nasetjournal.v4i1.43","DOIUrl":"https://doi.org/10.37275/nasetjournal.v4i1.43","url":null,"abstract":"Measurement of pipe to soil potential in a cathodic protection system is something that must be done which aims to monitor the performance of the installed cathodic protection system. The main measuring tool in measuring pipe to soil potential is the reference electrode. The stability of the reference electrode is important as a validation of the measurement results. So far, the stability of the reference electrode is very difficult to maintain due to frequent changes caused by the environment, especially for permanent reference electrodes that are buried in the underground or installed in seawater. Permanent reference electrode sensors commonly used in seawater is the Ag/AgCl reference electrode, but in fact the Ag/AgCl reference electrode is generally unstable and must be stabilized with a KCl solution and other problems have not been produced in Indonesia. This research will be carried out by adding a conductive layer to the Ag/AgCl electrode so that its stability can be increased. The sensor manufacturing process starts from pretreatment, electrolysis and product characterization. The results of the best coating thickness and weight gain experiments showed by the highest voltage variations and time variations (4000mV and 60 minutes). The presence of conductive solid material increases corrosion resistance from 0.00391 mm/year to 0.19549 mm/year and increases the stability of the Ag/AgCl layer ± 5 mV.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135992974","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}
Pub Date : 2023-08-01DOI: 10.37275/nasetjournal.v3i2.42
I. M. Brahmantiar, Pranam Dewa
The airflow across the underbody of the car will affect the lift and drag of a car. Part under front end car vehicle is one of the factors in the car that causes drag and also lift. This research was conducted to determine the airflow pattern and pressure distribution characteristics, such as static pressure, dynamic pressure, and pressure coefficient, which affect the performance of the test vehicle with variations in the angle of the under-front end. Experimental testing was carried out on 4 specimens, namely car vehicles with variations in tilt angles under front end 0°, 5°, 10°, and 15° inside the wind tunnel with a speed of 5.47 m/s. The results showed that the under front end of the 0° tilt angle is an area with low pressure, where the lift that occurs is relatively smaller than the under front end area which varies the angle of inclination. However, pressure fluctuations experienced by an angle of 10° are more stable than 0°.
{"title":"Analysis of Airflow Patterns and Pressure Distribution Characteristics on Cars with Variations of Under Front End Tilt Angle","authors":"I. M. Brahmantiar, Pranam Dewa","doi":"10.37275/nasetjournal.v3i2.42","DOIUrl":"https://doi.org/10.37275/nasetjournal.v3i2.42","url":null,"abstract":"The airflow across the underbody of the car will affect the lift and drag of a car. Part under front end car vehicle is one of the factors in the car that causes drag and also lift. This research was conducted to determine the airflow pattern and pressure distribution characteristics, such as static pressure, dynamic pressure, and pressure coefficient, which affect the performance of the test vehicle with variations in the angle of the under-front end. Experimental testing was carried out on 4 specimens, namely car vehicles with variations in tilt angles under front end 0°, 5°, 10°, and 15° inside the wind tunnel with a speed of 5.47 m/s. The results showed that the under front end of the 0° tilt angle is an area with low pressure, where the lift that occurs is relatively smaller than the under front end area which varies the angle of inclination. However, pressure fluctuations experienced by an angle of 10° are more stable than 0°.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82258532","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}
Pub Date : 2023-07-28DOI: 10.37275/nasetjournal.v3i2.41
Muhammad Caisar Ramadhan, Adi Widodo, Daniel Happy Putra, Noviandi, Article Info
Network quality monitoring can provide services in the provision of computer network performance in the provision of data transmission according to the level of aspects related to the performance of network infrastructure systems and the number of clients operating for each computer. During the day, at certain hours, many subscribers use the network when the connection is blocked, and the graphics on the screen reach their highest levels. By monitoring computer network installation graphics, Axence netTools software needs to know bandwidth management to overcome network congestion by analyzing the QoS (quality of service) of computer network data transmission. The purpose of this study is to provide quality of service presentation material on LAN infrastructure performance using the TIPHON standard to measure LAN performance and analyze the factors that influence the results of quality of service measurements and obtain packet loss, delay, jitter based on class classification and average bandwidth value, according to TIPHON. The research method used is observation, interviews, literature study, monitoring, and qualitative descriptive research methods. The results showed that the percentage value of quality of service based on the TIPHON standardization was 66.66%. This result was classified as "unsatisfactory" because the average packet loss was 40%. The average percentage of delay is 115ms, and the average percentage of jitter is 7.5ms. The factors that affect the QoS index results are the distance of computer network transmission facilities and the need to monitor computer networks when adding and maximizing bandwidth according to TIPHON standards.
{"title":"Overview of Computer Networks for Data Transmission at Pondok Kopi Islamic Hospital, Jakarta, Indonesia","authors":"Muhammad Caisar Ramadhan, Adi Widodo, Daniel Happy Putra, Noviandi, Article Info","doi":"10.37275/nasetjournal.v3i2.41","DOIUrl":"https://doi.org/10.37275/nasetjournal.v3i2.41","url":null,"abstract":"Network quality monitoring can provide services in the provision of computer network performance in the provision of data transmission according to the level of aspects related to the performance of network infrastructure systems and the number of clients operating for each computer. During the day, at certain hours, many subscribers use the network when the connection is blocked, and the graphics on the screen reach their highest levels. By monitoring computer network installation graphics, Axence netTools software needs to know bandwidth management to overcome network congestion by analyzing the QoS (quality of service) of computer network data transmission. The purpose of this study is to provide quality of service presentation material on LAN infrastructure performance using the TIPHON standard to measure LAN performance and analyze the factors that influence the results of quality of service measurements and obtain packet loss, delay, jitter based on class classification and average bandwidth value, according to TIPHON. The research method used is observation, interviews, literature study, monitoring, and qualitative descriptive research methods. The results showed that the percentage value of quality of service based on the TIPHON standardization was 66.66%. This result was classified as \"unsatisfactory\" because the average packet loss was 40%. The average percentage of delay is 115ms, and the average percentage of jitter is 7.5ms. The factors that affect the QoS index results are the distance of computer network transmission facilities and the need to monitor computer networks when adding and maximizing bandwidth according to TIPHON standards.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75171234","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}
Pub Date : 2023-07-14DOI: 10.37275/nasetjournal.v3i2.40
Marcel Bonifacio Tirta Wijata, Anak Agung Adhi Suryawan, Ketut Astawa, I Gusti Ketut Sukadana, I Made Parwata
PLTS has enormous potential in Indonesia, especially in Java-Bali, which accounts for 70% of Indonesia's electricity needs. In this study, a simulation of the PLTS system design was carried out using a hybrid microgrid as a power supply using PVsyst software to simulate PLTS performance. Power load requirements are adjusted to the specifications of electric vehicles. Meteonorm meteorological data were compared with field data to adjust for data variability. In the design simulation, there are three different slope angle scenarios, namely 10º, 13º, and 15º. The effective surface area for installing PLTS on an unmeasured roof is 35 m x 14 m (490 m2), so the number of modules that can be installed will be adjusted to the roof area. The PLTS system is capable of producing 169.3 MWh of power per year with an optimal tilt angle of 13º which has specific production of 1726 kWh/kWp/year and a performance ratio of 78.63%. PLTS is able to supply the power needs of 103 units of electric vehicles every day.
PLTS在印度尼西亚具有巨大的潜力，特别是在爪哇-巴厘岛，该地区占印度尼西亚电力需求的70%。在本研究中，采用混合微电网作为电源，使用PVsyst软件模拟PLTS系统性能，对PLTS系统设计进行了仿真。电力负荷要求根据电动汽车的规格进行调整。将气象数据与野外数据进行比较，以调整数据的变异性。在设计仿真中，有10º、13º和15º三种不同的坡角场景。在未测量的屋顶上安装PLTS的有效表面积为35 m x 14 m (490 m2)，因此可以安装的模块数量将根据屋顶面积进行调整。PLTS系统的年发电量为169.3兆瓦时，最佳倾角为13º，具体发电量为1726千瓦时/千瓦时/年，性能比为78.63%。PLTS每天可以满足103辆电动汽车的电力需求。
{"title":"Design Simulation of Micro-Grid Hybrid Solar Power Plant as a Power Supply","authors":"Marcel Bonifacio Tirta Wijata, Anak Agung Adhi Suryawan, Ketut Astawa, I Gusti Ketut Sukadana, I Made Parwata","doi":"10.37275/nasetjournal.v3i2.40","DOIUrl":"https://doi.org/10.37275/nasetjournal.v3i2.40","url":null,"abstract":"PLTS has enormous potential in Indonesia, especially in Java-Bali, which accounts for 70% of Indonesia's electricity needs. In this study, a simulation of the PLTS system design was carried out using a hybrid microgrid as a power supply using PVsyst software to simulate PLTS performance. Power load requirements are adjusted to the specifications of electric vehicles. Meteonorm meteorological data were compared with field data to adjust for data variability. In the design simulation, there are three different slope angle scenarios, namely 10º, 13º, and 15º. The effective surface area for installing PLTS on an unmeasured roof is 35 m x 14 m (490 m2), so the number of modules that can be installed will be adjusted to the roof area. The PLTS system is capable of producing 169.3 MWh of power per year with an optimal tilt angle of 13º which has specific production of 1726 kWh/kWp/year and a performance ratio of 78.63%. PLTS is able to supply the power needs of 103 units of electric vehicles every day.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75717547","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}
Cathodic protection is a corrosion control and prevention system that is applied to underground pipe structures by providing an electric charge to the structure to be protected. An online monitoring system for cathodic protection is urgently needed to save costs and ensure operator safety in the field in the care of the protected structure. This study aimed to evaluate cathodic protection online monitoring using a low power wide area network (LPWAN) communication system. Cathodic protection online monitoring in this study was applied using LPWAN with a radio frequency of 433 MHz. In this work, the type of communication with wireless technology has been chosen with low power consumption and can accommodate the distance between test stations in the distribution pipeline. From the results of testing the cathodic protection online monitoring system, it can be seen that measurement data that has been done manually can be replaced in real-time and monitored remotely. This system is highly recommended for areas that have so far not been covered by manual measurements, for example, remote areas prone to flooding, swamps, and interference areas that require denser data information to make handling easier to do early.
{"title":"Cathodic Protection Online Monitoring Using a Low Power Wide Area Network Communication System","authors":"Karyanto Herlambang, Irwan Setyo Wibowo, Maskuri Junaedi","doi":"10.37275/nasetjournal.v3i2.38","DOIUrl":"https://doi.org/10.37275/nasetjournal.v3i2.38","url":null,"abstract":"Cathodic protection is a corrosion control and prevention system that is applied to underground pipe structures by providing an electric charge to the structure to be protected. An online monitoring system for cathodic protection is urgently needed to save costs and ensure operator safety in the field in the care of the protected structure. This study aimed to evaluate cathodic protection online monitoring using a low power wide area network (LPWAN) communication system. Cathodic protection online monitoring in this study was applied using LPWAN with a radio frequency of 433 MHz. In this work, the type of communication with wireless technology has been chosen with low power consumption and can accommodate the distance between test stations in the distribution pipeline. From the results of testing the cathodic protection online monitoring system, it can be seen that measurement data that has been done manually can be replaced in real-time and monitored remotely. This system is highly recommended for areas that have so far not been covered by manual measurements, for example, remote areas prone to flooding, swamps, and interference areas that require denser data information to make handling easier to do early.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84717089","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}
Pub Date : 2023-03-13DOI: 10.37275/nasetjournal.v3i2.37
I Wayan Angga Widianta Putra, I. K. Sukadana, I Gusti Ngurah Putu Tenaya, I Putu Widiarta
Biogas is a type of new renewable energy that is formed through the fermentation process of organic waste materials, such as livestock manure, organic waste, and other materials by methanogenic bacteria in anaerobic (without oxygen) conditions. Methanol is a very light, volatile, colorless, tasteless, flammable, toxic liquid with a very faint odour. In addition, methanol can be used as a solvent and also as an alternative fuel. This study aimed to determine the effect of the type of biogas and methanol purification and loading as fuel for a 4-stroke generator on exhaust emissions. An experimental study to test the efficacy of biogas and methanol fuels with or without loading with RON-90 gasoline (Pertalite®). The percentage of carbon monoxide (CO) and hydrocarbon (HC) emissions is used as a reference in assessing the efficacy of fuels in reducing emissions. The results of exhaust emission test studies using biogas purified from H2S, H2O, CO2, and methanol produce exhaust emission values of HC and CO with a lower value compared to the maximum value of the threshold according to the standards of the Minister of Environment Number 05 of 2006 so that biogas purified from H2S, H2O, CO2, and methanol is more environmentally friendly than RON-90 gasoline on the market.
{"title":"The Effect of Types of Biogas and Methanol Purification and Loading as Fuel for Four-Stroke Generators on Exhaust Emissions","authors":"I Wayan Angga Widianta Putra, I. K. Sukadana, I Gusti Ngurah Putu Tenaya, I Putu Widiarta","doi":"10.37275/nasetjournal.v3i2.37","DOIUrl":"https://doi.org/10.37275/nasetjournal.v3i2.37","url":null,"abstract":"Biogas is a type of new renewable energy that is formed through the fermentation process of organic waste materials, such as livestock manure, organic waste, and other materials by methanogenic bacteria in anaerobic (without oxygen) conditions. Methanol is a very light, volatile, colorless, tasteless, flammable, toxic liquid with a very faint odour. In addition, methanol can be used as a solvent and also as an alternative fuel. This study aimed to determine the effect of the type of biogas and methanol purification and loading as fuel for a 4-stroke generator on exhaust emissions. An experimental study to test the efficacy of biogas and methanol fuels with or without loading with RON-90 gasoline (Pertalite®). The percentage of carbon monoxide (CO) and hydrocarbon (HC) emissions is used as a reference in assessing the efficacy of fuels in reducing emissions. The results of exhaust emission test studies using biogas purified from H2S, H2O, CO2, and methanol produce exhaust emission values of HC and CO with a lower value compared to the maximum value of the threshold according to the standards of the Minister of Environment Number 05 of 2006 so that biogas purified from H2S, H2O, CO2, and methanol is more environmentally friendly than RON-90 gasoline on the market.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89964044","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}
Pub Date : 2023-01-27DOI: 10.37275/nasetjournal.v3i2.34
I Gusti Agung Gede Kusuma Artha, M. Sucipta, Hendra Wijaksana
The water heater is a common facility found in hotels or homes. There are alternative ways to do this besides using water heaters on the market, namely by utilizing the heat generated by the compressor and which will be discharged through the condenser, by adding a heat recovery system to the air conditioning unit. These research tests were carried out on variations of the serpentine-type heat exchanger with variations in the number of fin plates on the performance of the heat recovery system and on the split air conditioner. This research is an experimental study on a serpentine-type heat exchanger. Tests were carried out on a variety of heat exchangers with variations in the number of fin plates combined with a heat recovery system on a split AC. The independent variables in this study were three variations of the placement of the fin plate on the serpentine-type coil and the setting of the output air of the AC evaporator. Enthalpy values, refrigeration effects, compressor work, condenser, and coefficient of performance (COP) are calculated and presented in tables and graphs. The results of the performance of the heat recovery system obtained variations in the setting of the air burst coming out of the evaporator 24ºC has the highest COP value. The use of a heat recovery system can increase COP. With variations in the number of fin plates in a heat recovery system with a serpentine heat exchanger, the use of 5 fin plates has the hottest water temperature compared to the use of 3 fin plates and 1 fin plate.
{"title":"Analysis of Heat Recovery System Performance Using a Serpentine-Type Heat Exchanger on Water Heater with Fins Number Variation","authors":"I Gusti Agung Gede Kusuma Artha, M. Sucipta, Hendra Wijaksana","doi":"10.37275/nasetjournal.v3i2.34","DOIUrl":"https://doi.org/10.37275/nasetjournal.v3i2.34","url":null,"abstract":"The water heater is a common facility found in hotels or homes. There are alternative ways to do this besides using water heaters on the market, namely by utilizing the heat generated by the compressor and which will be discharged through the condenser, by adding a heat recovery system to the air conditioning unit. These research tests were carried out on variations of the serpentine-type heat exchanger with variations in the number of fin plates on the performance of the heat recovery system and on the split air conditioner. This research is an experimental study on a serpentine-type heat exchanger. Tests were carried out on a variety of heat exchangers with variations in the number of fin plates combined with a heat recovery system on a split AC. The independent variables in this study were three variations of the placement of the fin plate on the serpentine-type coil and the setting of the output air of the AC evaporator. Enthalpy values, refrigeration effects, compressor work, condenser, and coefficient of performance (COP) are calculated and presented in tables and graphs. The results of the performance of the heat recovery system obtained variations in the setting of the air burst coming out of the evaporator 24ºC has the highest COP value. The use of a heat recovery system can increase COP. With variations in the number of fin plates in a heat recovery system with a serpentine heat exchanger, the use of 5 fin plates has the hottest water temperature compared to the use of 3 fin plates and 1 fin plate.","PeriodicalId":19046,"journal":{"name":"Natural Sciences Engineering and Technology Journal","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87958189","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}
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