The objective of this research is to create an interactive multimedia application for teaching Islamic Cultural History at Madrasah Ibtidaiyah Negeri Kumbe Merauke. This application aims to address the students' needs resulting from a lack of comprehension during the learning process. While traditional methods like printed books have been used, they fail to provide the varied and direct interaction required for effective learning. The development process follows the waterfall method, and data is collected through interviews, questionnaires, and observation. The system design employs flowchart design, use case diagram, sequence diagram, and activity diagram. For testing, both the Blackbox method and Usability scale are used. The results of the Blackbox testing demonstrate that the functionality and appearance of the Islamic Cultural History learning application are good and meet expectations. Additionally, the usability scale assessment yields a final score of 71.81, which falls within the Good category (grade scale C). Conclusively, the data suggests that the Islamic Cultural History learning application is acceptable and beneficial for enhancing the learning process for students.
{"title":"Implementation of System Usablity Scale in Islamic Cultural History Interactive Learning Media Application at Madrasah Ibtidaiyah Negeri Kumbe Merauke","authors":"None Syaiful Nugraha, None Heru Ismanto, None Lilik Sumaryanti, None Teddy Istanto","doi":"10.47577/technium.v17i.10039","DOIUrl":"https://doi.org/10.47577/technium.v17i.10039","url":null,"abstract":"The objective of this research is to create an interactive multimedia application for teaching Islamic Cultural History at Madrasah Ibtidaiyah Negeri Kumbe Merauke. This application aims to address the students' needs resulting from a lack of comprehension during the learning process. While traditional methods like printed books have been used, they fail to provide the varied and direct interaction required for effective learning. The development process follows the waterfall method, and data is collected through interviews, questionnaires, and observation. The system design employs flowchart design, use case diagram, sequence diagram, and activity diagram. For testing, both the Blackbox method and Usability scale are used. The results of the Blackbox testing demonstrate that the functionality and appearance of the Islamic Cultural History learning application are good and meet expectations. Additionally, the usability scale assessment yields a final score of 71.81, which falls within the Good category (grade scale C). Conclusively, the data suggests that the Islamic Cultural History learning application is acceptable and beneficial for enhancing the learning process for students.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135216740","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}
Activated carbon is believed to reduce radiation from cell-phone because it has large pores. This study aims to synthesize a silica-carbon composite as a mobile phone casing using activated carbon from bamboo, coconut shells, and coal combined with silicone rubber. The addition of activated carbon is carried out in the range of 10 - 30 g. Activated carbon mixed with silicone rubber and stirred for 3 minutes at 150 rpm. Based on Digital Electromagnetic Radiation, the highest addition of activated carbon (30g) provides a high radiation reduction but has a small tensile strength and a large elongation value. SEM images show that the distribution of activated carbon 10 - 15 g is more homogeneous on the mobile phone casing.
{"title":"Effect of the Carbon Source on the Characteristics of Silica-carbon as a Handphone’s Case Material","authors":"None Srie Muljani, None Erwan Adi Saputro, None Kusuma Wardhani Mas’udah, None Syuaibatul Islamiyah","doi":"10.47577/technium.v17i.10087","DOIUrl":"https://doi.org/10.47577/technium.v17i.10087","url":null,"abstract":"Activated carbon is believed to reduce radiation from cell-phone because it has large pores. This study aims to synthesize a silica-carbon composite as a mobile phone casing using activated carbon from bamboo, coconut shells, and coal combined with silicone rubber. The addition of activated carbon is carried out in the range of 10 - 30 g. Activated carbon mixed with silicone rubber and stirred for 3 minutes at 150 rpm. Based on Digital Electromagnetic Radiation, the highest addition of activated carbon (30g) provides a high radiation reduction but has a small tensile strength and a large elongation value. SEM images show that the distribution of activated carbon 10 - 15 g is more homogeneous on the mobile phone casing.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"22 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135215915","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 : 2023-11-01DOI: 10.47577/technium.v17i.10042
None Modesta R. Maturbongs, None Marius A. Welliken K, None Nurdini Sholikatun Nisa
This study aims to determine the structure of body size based on length and weight class, length-weight relationship, and the condition factor of croaker fishes, the Sciaenidae family landed at the Merauke Nusantara Fisheries Port. Sampling was conducted from June to September 2020 using a random sampling method. The data analysis used in this study included the length and body size structure of the croaker fishes, the length-weight relationship, and the condition factor. Croaker fishes landed at the Nusantara Fisheries Port, Merauke Regency, obtained 2 species, namely Nibea saldado and Johnius amblycephalus with a total sample size of 170 individuals. Nibea saldado's body length ranges from 210-665 mm with body weights ranging from 200-2,500 grams, while Johnius amblycephalus has body length ranges from 570-740 mm with body weights ranging from 1,800-4,000 grams. The long-weight relationship of Nibea saldado and Johnius amblycephalus in June - Setember showed negative allometric growth, but for Johnius amblycephalus in July the growth was allometric positive. The condition factor for Nibea saldado has a value range between 0.645 - 2.874, while Johnius amblycephalus has a value range between 0.291 - 1.079.
Keywords: Population structure, croaker fishes, Sciaenidae, Nusantara Fisheries Port, Merauke.
{"title":"Population structure of croakers fish (Family: Sciaenidae) from fish boats at Nusantara Fishery Port, Merauke Regency","authors":"None Modesta R. Maturbongs, None Marius A. Welliken K, None Nurdini Sholikatun Nisa","doi":"10.47577/technium.v17i.10042","DOIUrl":"https://doi.org/10.47577/technium.v17i.10042","url":null,"abstract":"This study aims to determine the structure of body size based on length and weight class, length-weight relationship, and the condition factor of croaker fishes, the Sciaenidae family landed at the Merauke Nusantara Fisheries Port. Sampling was conducted from June to September 2020 using a random sampling method. The data analysis used in this study included the length and body size structure of the croaker fishes, the length-weight relationship, and the condition factor. Croaker fishes landed at the Nusantara Fisheries Port, Merauke Regency, obtained 2 species, namely Nibea saldado and Johnius amblycephalus with a total sample size of 170 individuals. Nibea saldado's body length ranges from 210-665 mm with body weights ranging from 200-2,500 grams, while Johnius amblycephalus has body length ranges from 570-740 mm with body weights ranging from 1,800-4,000 grams. The long-weight relationship of Nibea saldado and Johnius amblycephalus in June - Setember showed negative allometric growth, but for Johnius amblycephalus in July the growth was allometric positive. The condition factor for Nibea saldado has a value range between 0.645 - 2.874, while Johnius amblycephalus has a value range between 0.291 - 1.079.
 Keywords: Population structure, croaker fishes, Sciaenidae, Nusantara Fisheries Port, Merauke.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"52 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135216216","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}
Ternate City is one of the cities from North Maluku Province whose population density is so high, so it has the highest number of children with autism. The design location is in Ngade Village, South Ternate City. The design method is carried out in 3 stages. The first stage is a data collection technique in the form of literature studies and field observations. The second stage is the Analysis of Environmental, Human, and Building Aspects. The third stage is in the form of design concept results and building design products in the form of working drawings. The building of the Autism child education and rehabilitation center is a forum for the fulfillment of facilities and infrastructure for people with autism in Ternate City as facilities for handling services for children with autism, developing the talents of children with autism, as well as other functions as a medium for information and introduction about Autism disorders to the wider community. The Center for Education and Rehabilitation of Children with Autism answers the need for proper schools for children with autism in Ternate City. The space needs of building users follow the standards of facilities and infrastructure that are suitable for children with special needs (Autism). The concept of behavioral architecture implements the behavior of children with autism by prioritizing physical and psychic comfort factors to the creation of building conditions and environments whose atmosphere is healing, safe, calm and comfortable
{"title":"Design of Education and Rehabilitation Center for Autism Children in Ternate City","authors":"None Nurazizah Darwis, None Firdawaty Marasabessy, None Hery Purnomo","doi":"10.47577/technium.v17i.10053","DOIUrl":"https://doi.org/10.47577/technium.v17i.10053","url":null,"abstract":"Ternate City is one of the cities from North Maluku Province whose population density is so high, so it has the highest number of children with autism. The design location is in Ngade Village, South Ternate City. The design method is carried out in 3 stages. The first stage is a data collection technique in the form of literature studies and field observations. The second stage is the Analysis of Environmental, Human, and Building Aspects. The third stage is in the form of design concept results and building design products in the form of working drawings. The building of the Autism child education and rehabilitation center is a forum for the fulfillment of facilities and infrastructure for people with autism in Ternate City as facilities for handling services for children with autism, developing the talents of children with autism, as well as other functions as a medium for information and introduction about Autism disorders to the wider community. The Center for Education and Rehabilitation of Children with Autism answers the need for proper schools for children with autism in Ternate City. The space needs of building users follow the standards of facilities and infrastructure that are suitable for children with special needs (Autism). The concept of behavioral architecture implements the behavior of children with autism by prioritizing physical and psychic comfort factors to the creation of building conditions and environments whose atmosphere is healing, safe, calm and comfortable","PeriodicalId":490649,"journal":{"name":"Technium","volume":"9 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135217006","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 : 2023-11-01DOI: 10.47577/technium.v17i.10115
None Ibnu Irawan, None Rifky Yusron
Spray Dryer is the most widely used industrial process for drying. Continuous production can be carried out in powder or powder form from liquid raw materials. The feed to some desiccant may be a liquid in which the solid will float as light particles, or it may be in the form of a solution. Some drying products are resistant to rough handling and very hot environments, but some require careful handling at low or moderate temperatures. Computational Fluid Dynamics (CFD) in a spray dryer system design uses an atomization system to convert seawater into salt. The process of analyzing several needs, regarding the function of time from worker efficiency and the results of processing seawater into salt is the focus of researchers. The results of this research process are CFD analysis on spray dryer system design, analysis of mass flow rate and heat of drying air. The results from the analysis using CFD can be concluded, namely the spray dryer design specifications are __ = 1500 mm __ = 200 mm, diameter = 1100 mm. While the temperature of the hot air entering is 130oC and the pressure to the nozzle is 12.849 psi. The Spray Dryer as a result of the design planning is capable of producing 0.36 kg salt/hour with a seawater requirement of 10.25 kg. The results of the simulation of the inflow of hot air fluid and seawater spray on the nozzle, show the level of homogeneity of the mixture, this can cause seawater particles to separate, one of which is NaCl or salt. System efficiency is at 80% based on the mass of seawater processed to become salt.
{"title":"Computational Fluid Dynamic Analysis in Spray Dryer Design By Distillation System Of Sea Water To Salt","authors":"None Ibnu Irawan, None Rifky Yusron","doi":"10.47577/technium.v17i.10115","DOIUrl":"https://doi.org/10.47577/technium.v17i.10115","url":null,"abstract":"Spray Dryer is the most widely used industrial process for drying. Continuous production can be carried out in powder or powder form from liquid raw materials. The feed to some desiccant may be a liquid in which the solid will float as light particles, or it may be in the form of a solution. Some drying products are resistant to rough handling and very hot environments, but some require careful handling at low or moderate temperatures. Computational Fluid Dynamics (CFD) in a spray dryer system design uses an atomization system to convert seawater into salt. The process of analyzing several needs, regarding the function of time from worker efficiency and the results of processing seawater into salt is the focus of researchers. The results of this research process are CFD analysis on spray dryer system design, analysis of mass flow rate and heat of drying air. The results from the analysis using CFD can be concluded, namely the spray dryer design specifications are __ = 1500 mm __ = 200 mm, diameter = 1100 mm. While the temperature of the hot air entering is 130oC and the pressure to the nozzle is 12.849 psi. The Spray Dryer as a result of the design planning is capable of producing 0.36 kg salt/hour with a seawater requirement of 10.25 kg. The results of the simulation of the inflow of hot air fluid and seawater spray on the nozzle, show the level of homogeneity of the mixture, this can cause seawater particles to separate, one of which is NaCl or salt. System efficiency is at 80% based on the mass of seawater processed to become salt.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135217239","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}
Tofu is a food product that is a necessity for daily consumption by the community. The basic ingredient in making tofu is soybeans which have high nutritional value and can be a healthy protein alternative for the community. Tofu is made from coagulated soybean seed sediment, so that the processing produces water which becomes waste in the tofu-making industry. In increasing production it is necessary to have attention to environmental performance. The aspect of environmental performance is in the form of liquid waste resulting from a large number of tofu production processes. The purpose of this study is to analyze the liquid waste from tofu production using the Green Productivity (GP) method to provide suggestions for improvements in increasing company productivity. Based on the results of the study, the company has an initial environmental performance index (EPI) of -376.305. The initial Green Productivity Index (GPI) at CV Barokah has a value of 0.003 and GPI Liquid Waste of 0.75. There are two alternative solutions, namely the utilization of liquid waste to become Nata de soya and liquid organic fertilizer. The alternative chosen is the utilization of liquid waste as organic fertilizer with a profit of Rp. 126,447,163 with the final productivity value also increasing to 703.10%.
{"title":"Environmental Performance Analysis Of CV Barokah Tofu Waste Factory Using Green Productivity","authors":"None Rachmad Hidayat, None Nuriyanti Arifiyah, None Rayhan Ahsanul Hidayat","doi":"10.47577/technium.v17i.10094","DOIUrl":"https://doi.org/10.47577/technium.v17i.10094","url":null,"abstract":"Tofu is a food product that is a necessity for daily consumption by the community. The basic ingredient in making tofu is soybeans which have high nutritional value and can be a healthy protein alternative for the community. Tofu is made from coagulated soybean seed sediment, so that the processing produces water which becomes waste in the tofu-making industry. In increasing production it is necessary to have attention to environmental performance. The aspect of environmental performance is in the form of liquid waste resulting from a large number of tofu production processes. The purpose of this study is to analyze the liquid waste from tofu production using the Green Productivity (GP) method to provide suggestions for improvements in increasing company productivity. Based on the results of the study, the company has an initial environmental performance index (EPI) of -376.305. The initial Green Productivity Index (GPI) at CV Barokah has a value of 0.003 and GPI Liquid Waste of 0.75. There are two alternative solutions, namely the utilization of liquid waste to become Nata de soya and liquid organic fertilizer. The alternative chosen is the utilization of liquid waste as organic fertilizer with a profit of Rp. 126,447,163 with the final productivity value also increasing to 703.10%.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"4 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135217844","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}
Salt production is one of the concerns of the Indonesian government. Several government policies such as salt imports have had a major impact on local salt farmers. Other factors are due to the increased demand for salt, decreased domestic salt production which is unfavorable due to weather factors, and the price of imported salt is lower than that of local salt. Many people express their opinions regarding the salt import policy, via Twitter social media. Sentiment analysis can be applied to analyze tweets or writings by the public regarding salt import policies and classify the data. This study uses the naïve Bayes classifier algorithm model as a sentiment classification algorithm on Twitter social media tweets. The classification process uses the Naïve Bayes algorithm. The feature extraction and weighting method is the TF-IDF method. Not all of the features resulting from the TF-IDF process are used, so feature selection is carried out using the information gain method. Model testing was carried out 5 times with 500 data, using feature selection and without feature selection. Without feature selection, the highest accuracy result is 84% at K=4, while without feature selection it produces an accuracy of 71% at K=3, so there is an increase of 13%.
{"title":"Sentiment Analysis for Indonesian Salt Policy uses Naïve Bayes and Information Gain Methods","authors":"None Yeni Kustiyahningsih, None Ikromul Islam, None Bain Khusnul Khotimah, None Jaka Purnama","doi":"10.47577/technium.v17i.10121","DOIUrl":"https://doi.org/10.47577/technium.v17i.10121","url":null,"abstract":"Salt production is one of the concerns of the Indonesian government. Several government policies such as salt imports have had a major impact on local salt farmers. Other factors are due to the increased demand for salt, decreased domestic salt production which is unfavorable due to weather factors, and the price of imported salt is lower than that of local salt. Many people express their opinions regarding the salt import policy, via Twitter social media. Sentiment analysis can be applied to analyze tweets or writings by the public regarding salt import policies and classify the data. This study uses the naïve Bayes classifier algorithm model as a sentiment classification algorithm on Twitter social media tweets. The classification process uses the Naïve Bayes algorithm. The feature extraction and weighting method is the TF-IDF method. Not all of the features resulting from the TF-IDF process are used, so feature selection is carried out using the information gain method. Model testing was carried out 5 times with 500 data, using feature selection and without feature selection. Without feature selection, the highest accuracy result is 84% at K=4, while without feature selection it produces an accuracy of 71% at K=3, so there is an increase of 13%.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"15 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135161110","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}
The growth of the industrial sector in 2023 will increase, this condition is reflected in the trend of the level of expansion in the value of the Industrial Confidence Index (IKI) which has increased. PT. Pojur is a company located in the Sumenep area engaged in the gas cylinder industry. For a business to survive and continue to grow, a business must be able to compete by maintaining product quality. One of the company's strategies that can be used is by measuring the company's productivity. This is used to determine the extent to which the effectiveness of the products produced and the efficiency of the use of resources owned by PT. Pojur. Several variables that affect productivity include raw materials, energy and labor used. The purpose of this study is to find out what the productivity index is at PT. Pojur with the Objective matrix (OMAX) method. The results of measuring productivity during the period January to December 2022 show a productivity of 19%, while the highest productivity occurs in November and December with a total of 26% and the lowest productivity is in January with a total of 0% and the cause of decreased productivity in the production section is lack of maintenance on machines and the lack of operator expertise in carrying out production.
{"title":"Productivity analysis and improvement of the production department at PT. Pojur - Madura using the objective matrix (OMAX) method","authors":"None Emon Rifa'i, None Rachmad Hidayat, None Ummi Badiyatus Shalihah","doi":"10.47577/technium.v17i.10096","DOIUrl":"https://doi.org/10.47577/technium.v17i.10096","url":null,"abstract":"The growth of the industrial sector in 2023 will increase, this condition is reflected in the trend of the level of expansion in the value of the Industrial Confidence Index (IKI) which has increased. PT. Pojur is a company located in the Sumenep area engaged in the gas cylinder industry. For a business to survive and continue to grow, a business must be able to compete by maintaining product quality. One of the company's strategies that can be used is by measuring the company's productivity. This is used to determine the extent to which the effectiveness of the products produced and the efficiency of the use of resources owned by PT. Pojur. Several variables that affect productivity include raw materials, energy and labor used. The purpose of this study is to find out what the productivity index is at PT. Pojur with the Objective matrix (OMAX) method. The results of measuring productivity during the period January to December 2022 show a productivity of 19%, while the highest productivity occurs in November and December with a total of 26% and the lowest productivity is in January with a total of 0% and the cause of decreased productivity in the production section is lack of maintenance on machines and the lack of operator expertise in carrying out production.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135161561","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}
Merauke Regency is a lowland area that has soft soil which predominates. One of the methods to overcome the subsidence in silt soil, it is necessary to strengthen it by using geotextiles. The function of the geotextile is to hold the soil surface so that there is no subsidence in the soil. This study aims to determine the carrying capacity of silt soil before and after being given geotextile reinforcement.The study used an experimental method using the addition of Geotextile (non-woven type TS600) to strengthen the carrying capacity of silt soil. The silt soil carrying capacity test was divided into several variations, namely without using geotextile reinforcement and reinforced with 1 layer, 2 layers, and 3 layers of geotextile at a depth of 10 cm, 20 cm and 30 cm.The results of research conducted in the laboratory, the use of geotextile materials to increase the carrying capacity of silt soil has increased compared to the initial conditions. Soil without using geotextiles has a greater decrease, namely at a load of 5 kN there is a settlement of 20.3 mm. By using a single layer geotextile reinforcement material at a load of 5 kN there was a decrease of 10.97 mm, while using a two layer geotextile reinforcement material at a load of 5 kN there was a decrease of 8.09 mm, and using a three layer geotextile reinforcement material with a load of 5 kN there was a decrease of 6.01 mm. It can be concluded that the use of geotextile reinforcement can reduce the settlement of silt soil.
{"title":"Geotextile Reinforcement Model Laboratory Test on Silt Soil","authors":"None Eko Budianto, None Dina Limbong Pamuttu, None Hairulla Hairulla, None Daud Andang Pasalli","doi":"10.47577/technium.v17i.10045","DOIUrl":"https://doi.org/10.47577/technium.v17i.10045","url":null,"abstract":"Merauke Regency is a lowland area that has soft soil which predominates. One of the methods to overcome the subsidence in silt soil, it is necessary to strengthen it by using geotextiles. The function of the geotextile is to hold the soil surface so that there is no subsidence in the soil. This study aims to determine the carrying capacity of silt soil before and after being given geotextile reinforcement.The study used an experimental method using the addition of Geotextile (non-woven type TS600) to strengthen the carrying capacity of silt soil. The silt soil carrying capacity test was divided into several variations, namely without using geotextile reinforcement and reinforced with 1 layer, 2 layers, and 3 layers of geotextile at a depth of 10 cm, 20 cm and 30 cm.The results of research conducted in the laboratory, the use of geotextile materials to increase the carrying capacity of silt soil has increased compared to the initial conditions. Soil without using geotextiles has a greater decrease, namely at a load of 5 kN there is a settlement of 20.3 mm. By using a single layer geotextile reinforcement material at a load of 5 kN there was a decrease of 10.97 mm, while using a two layer geotextile reinforcement material at a load of 5 kN there was a decrease of 8.09 mm, and using a three layer geotextile reinforcement material with a load of 5 kN there was a decrease of 6.01 mm. It can be concluded that the use of geotextile reinforcement can reduce the settlement of silt soil.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"131 1-3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135161844","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 : 2023-11-01DOI: 10.47577/technium.v17i.10043
None Yorinda Buyang, None Yenni Pintauli Pasaribu, None Paulus Mangera, None Dina Kartika Maharani, None Novike Bela Sumanik
Polypropylene is converted into bio-oil through catalytic pyrolysis using dolomite as a catalyst. The purpose of this study was to determine the effect of using dolomite directly without prior treatment on the bio-oil produced from the pyrolysis of propylene plastic. The amount of loading catalyst used is 5%. Increasing the pyrolysis temperature from 350 to 450 ℃ increased bio-oil from 35.56 wt% to 64.84 wt% by reducing gas to 21.08 wt%. In thermal pyrolysis, the production of bio-oil is 85 wt% with 19.30 wt% char. In the GC-MS analysis of bio-oil from thermal and catalystic pyrolysis, the most dominant alcohol composition was obtained. Based on the result of the analysis, it can be concluded that the bio-oil obtained can be further developed into fuel.
{"title":"Bio-oil production from pyrolysis of Polypropylene using dolomite catalyst","authors":"None Yorinda Buyang, None Yenni Pintauli Pasaribu, None Paulus Mangera, None Dina Kartika Maharani, None Novike Bela Sumanik","doi":"10.47577/technium.v17i.10043","DOIUrl":"https://doi.org/10.47577/technium.v17i.10043","url":null,"abstract":"Polypropylene is converted into bio-oil through catalytic pyrolysis using dolomite as a catalyst. The purpose of this study was to determine the effect of using dolomite directly without prior treatment on the bio-oil produced from the pyrolysis of propylene plastic. The amount of loading catalyst used is 5%. Increasing the pyrolysis temperature from 350 to 450 ℃ increased bio-oil from 35.56 wt% to 64.84 wt% by reducing gas to 21.08 wt%. In thermal pyrolysis, the production of bio-oil is 85 wt% with 19.30 wt% char. In the GC-MS analysis of bio-oil from thermal and catalystic pyrolysis, the most dominant alcohol composition was obtained. Based on the result of the analysis, it can be concluded that the bio-oil obtained can be further developed into fuel.","PeriodicalId":490649,"journal":{"name":"Technium","volume":"137 1-12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135162045","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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