The chemical and nutrient properties of soil on various land slopes are related to the management of integrated and sustainable coffee plantation. The aim of the study was to determine soil chemical properties and nutrient availability on various slopes of Gayo Arabica coffee plantations. A total of 12 composite soils for laboratory analysis were taken from Arabia coffee plantation owned by the community in Bandar District, Bener Meriah Regency. The selection of the research location was determined by purposive sampling. The independent variable was slope of the land, while dependent variables were soil chemical properties and available nutrients. The results showed that the soil chemical properties which were significantly different on various land slopes were C-organic, CN ratio, and base saturation. C-organic content and C:N ratio decreased with increasing slope of the Gayo Arabica coffee plantation. On the contrary, base saturation as the slope of the Gayo Arabica coffee fields rises.
{"title":"Soil Chemical Properties and Nutrient Status on Various Land Slopes of Gayo Arabica Coffee Plantation, Aceh Indonesia","authors":"Muyassir Muyassir, Helmi Helmi, Meidilla Rahyunnisa","doi":"10.13170/aijst.12.2.31413","DOIUrl":"https://doi.org/10.13170/aijst.12.2.31413","url":null,"abstract":"The chemical and nutrient properties of soil on various land slopes are related to the management of integrated and sustainable coffee plantation. The aim of the study was to determine soil chemical properties and nutrient availability on various slopes of Gayo Arabica coffee plantations. A total of 12 composite soils for laboratory analysis were taken from Arabia coffee plantation owned by the community in Bandar District, Bener Meriah Regency. The selection of the research location was determined by purposive sampling. The independent variable was slope of the land, while dependent variables were soil chemical properties and available nutrients. The results showed that the soil chemical properties which were significantly different on various land slopes were C-organic, CN ratio, and base saturation. C-organic content and C:N ratio decreased with increasing slope of the Gayo Arabica coffee plantation. On the contrary, base saturation as the slope of the Gayo Arabica coffee fields rises.","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135746304","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}
Concentrically Braced Frame (CBF) is a structural system with high stiffness, so it is recommended to be implemented in earthquake-hazard areas. The stiffness in CBF is contributed by its diagonal component, which is called bracing. Bracing reduces lateral deformation on the frame system because of the earthquake and prevents heavy damage or failure of the structure. So far, several studies have been conducted. However, the effect of the frame height and the bracing configuration on the CBF performance has not yet been clarified. This study analytically investigated several models of CBF in Chevron V Brace and Diagonal configurations. Those models were prepared with different frame heights. The analyses were conducted by employing the cyclic load and considering yield displacement control in each model. The observation was emphasized on the load-displacement hysteresis curve, from which the performance of each model can be revealed. Three parameters of performance are evaluated: strength, stiffness, and dissipation energy. The analysis discovered that the Diagonal CBF performed better than the Chevron V Brace CBF by presenting a larger and more stable hysteresis curve, which is addressed to better energy dissipation. It is also discovered that reducing the frame height is suggested to enhance the CBF performance due to the earthquake
{"title":"The Performance of Concentrically Braced Frames (CBF) in Chevron V Brace and Diagonal Configuration by Considering Various Frame Heights","authors":"Arief Panjaitan, Purwandy Hasibuan, Rudiansyah Putra, Mochammad Afifuddin, Muhammad Haiqal, Fakhran Adian, Dwi Putroe Naulia, Asraf Hazid","doi":"10.13170/aijst.12.2.30848","DOIUrl":"https://doi.org/10.13170/aijst.12.2.30848","url":null,"abstract":"Concentrically Braced Frame (CBF) is a structural system with high stiffness, so it is recommended to be implemented in earthquake-hazard areas. The stiffness in CBF is contributed by its diagonal component, which is called bracing. Bracing reduces lateral deformation on the frame system because of the earthquake and prevents heavy damage or failure of the structure. So far, several studies have been conducted. However, the effect of the frame height and the bracing configuration on the CBF performance has not yet been clarified. This study analytically investigated several models of CBF in Chevron V Brace and Diagonal configurations. Those models were prepared with different frame heights. The analyses were conducted by employing the cyclic load and considering yield displacement control in each model. The observation was emphasized on the load-displacement hysteresis curve, from which the performance of each model can be revealed. Three parameters of performance are evaluated: strength, stiffness, and dissipation energy. The analysis discovered that the Diagonal CBF performed better than the Chevron V Brace CBF by presenting a larger and more stable hysteresis curve, which is addressed to better energy dissipation. It is also discovered that reducing the frame height is suggested to enhance the CBF performance due to the earthquake","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382705","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}
Teurebeh Irrigation scheme is one of the promising irrigation areas in Aceh Besar District, Aceh Province. It is also one of the buffers in the agricultural sector, covering 750 hectares of agricultural area. However, the construction has shrunk over time, and the evaluation at the end of 2020 classified it as "Poor Performance and Requiring Attention." This study aims to determine the handling priority for the irrigation networks at the Teurebeh Irrigation scheme. Data on irrigation network inventory was used as input. The determination of handling priority was conducted using the Mann-Whitney method. The ranking for determining the importance of irrigation assets is based on the condition and function of the irrigation assets. ArcGIS and Google Earth software were used to determine the condition and handling of all assets. The results show that the handling priority levels are between the primary and secondary channels. The tapping structure of BDT.8, BDT.6, BDT.4, BDT.1, and BDT.7 are ranked 1 to 5, meaning they must be fixed immediately as the conditions are severe to moderately damaged and not functioning to functioning poorly. BDT.1 to BDT.3 is in the Primary Channel, while BDT.4 to BDT.8 is in the Secondary Channel. The handling priority for irrigation construction in the primary channel (BDT.1, BDT.1a, and BDT.1c) and the secondary channel (BDT.8, BDT.6, and BDT.7a) are within priority 1 to 3. The Mann-Whitney test on the proposed hypothesis comparing the urgency level between the two channels is insignificant, indicating no significant difference between the handling of primary and secondary channels, as both have similar conditions and functions. The results are expected to contribute to decision-making at the Irrigation Department in designing proposals for renovating irrigation networks.
{"title":"Priority Handling of Teurebeh Irrigation Assets, Aceh Besar District, Aceh Province","authors":"Azmeri Azmeri, Beryl Choliq Ar-rahman, Faris Zahran Jemi, Cut Dwi Refika, Nina Shaskia","doi":"10.13170/aijst.12.2.28575","DOIUrl":"https://doi.org/10.13170/aijst.12.2.28575","url":null,"abstract":"Teurebeh Irrigation scheme is one of the promising irrigation areas in Aceh Besar District, Aceh Province. It is also one of the buffers in the agricultural sector, covering 750 hectares of agricultural area. However, the construction has shrunk over time, and the evaluation at the end of 2020 classified it as \"Poor Performance and Requiring Attention.\" This study aims to determine the handling priority for the irrigation networks at the Teurebeh Irrigation scheme. Data on irrigation network inventory was used as input. The determination of handling priority was conducted using the Mann-Whitney method. The ranking for determining the importance of irrigation assets is based on the condition and function of the irrigation assets. ArcGIS and Google Earth software were used to determine the condition and handling of all assets. The results show that the handling priority levels are between the primary and secondary channels. The tapping structure of BDT.8, BDT.6, BDT.4, BDT.1, and BDT.7 are ranked 1 to 5, meaning they must be fixed immediately as the conditions are severe to moderately damaged and not functioning to functioning poorly. BDT.1 to BDT.3 is in the Primary Channel, while BDT.4 to BDT.8 is in the Secondary Channel. The handling priority for irrigation construction in the primary channel (BDT.1, BDT.1a, and BDT.1c) and the secondary channel (BDT.8, BDT.6, and BDT.7a) are within priority 1 to 3. The Mann-Whitney test on the proposed hypothesis comparing the urgency level between the two channels is insignificant, indicating no significant difference between the handling of primary and secondary channels, as both have similar conditions and functions. The results are expected to contribute to decision-making at the Irrigation Department in designing proposals for renovating irrigation networks.","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382326","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 : 2023-08-03DOI: 10.13170/aijst.12.2.31526
Muhibuddin Muhibuddin, Asri Gani, M Prayogie Aulia, Nasrul Arahman
Rivers are important for human survival providing raw water for the community's clean water needs. Rivers also provide sand, gravel, and rocks commonly used for construction. However, improper exploitation of the river without considering environmental sustainability may cause future damage to it. The damage is usually caused by mining activities violating environmental regulations. The main point of this study is to evaluate the changes in the riverbank and riverbed of Krueng Montala river, Aceh, Indonesia, due to the mining activity around that place. The method used to analyze the changes was measuring the river's topographical contours at the end of mining activities and comparing the results with the initial licensing data based on the Mining License Number 540/DPMPTSP/414/IUP-OP/2020. The measured data was also compared to the Technical Recommendation Number SA.02.03/BWS1/1542 from the River Basin Office of Sumatera 1. Based on the technical recommendation, the sufficient excavation volume is 10,201.44 m3. The field data for lost and excavated materials at the research location was 40,861.4 m3, and the total riverbank material loss at the study location was 7,566.33 m3.
{"title":"Analysis Of Physical And Chemical Impact On The Krueng Montala River, Aceh Besar Regency: Sand And Stone Mining Activity Effect","authors":"Muhibuddin Muhibuddin, Asri Gani, M Prayogie Aulia, Nasrul Arahman","doi":"10.13170/aijst.12.2.31526","DOIUrl":"https://doi.org/10.13170/aijst.12.2.31526","url":null,"abstract":"Rivers are important for human survival providing raw water for the community's clean water needs. Rivers also provide sand, gravel, and rocks commonly used for construction. However, improper exploitation of the river without considering environmental sustainability may cause future damage to it. The damage is usually caused by mining activities violating environmental regulations. The main point of this study is to evaluate the changes in the riverbank and riverbed of Krueng Montala river, Aceh, Indonesia, due to the mining activity around that place. The method used to analyze the changes was measuring the river's topographical contours at the end of mining activities and comparing the results with the initial licensing data based on the Mining License Number 540/DPMPTSP/414/IUP-OP/2020. The measured data was also compared to the Technical Recommendation Number SA.02.03/BWS1/1542 from the River Basin Office of Sumatera 1. Based on the technical recommendation, the sufficient excavation volume is 10,201.44 m3. The field data for lost and excavated materials at the research location was 40,861.4 m3, and the total riverbank material loss at the study location was 7,566.33 m3.","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382324","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 : 2023-08-03DOI: 10.13170/aijst.12.2.27542
Idongesit Edem Okon, Solomon Usman Jatau, Anthony Abutu Attah
This study assessed the safety measures and operational challenges of inland waterway transport along the Oron - Calabar route. Observation and structured questionnaires were used for the collection of data. Quantitative data were analyzed using descriptive statistics, while qualitative data were coded and analyzed using the 4- point Likert scale, which was converted to a relative importance index (RII) for each factor posing a challenge to operators. The result showed Safety equipment was provided onboard boats by operators. The RII computed showed that boat and engine replacement (RII = 0.874) was the most challenging factor, while water hyacinth (RII = 0.418) was the most minor factor. Other challenges were frequent lousy weather conditions, high running costs, floating logs and debris, extortion by law enforcement agents, difficulty in making headway against the opposite current, high price of safety equipment, passengers’ refusal to adhere to safety measures, and poor berthing facilities in their order of impact. Proper funding and enforcement of safety measures are at this moment recommended.
{"title":"Assessment of Safety Measures and Operational Challenges of Inland Waterway Transport along Oron - Calabar Route, Nigeria","authors":"Idongesit Edem Okon, Solomon Usman Jatau, Anthony Abutu Attah","doi":"10.13170/aijst.12.2.27542","DOIUrl":"https://doi.org/10.13170/aijst.12.2.27542","url":null,"abstract":"This study assessed the safety measures and operational challenges of inland waterway transport along the Oron - Calabar route. Observation and structured questionnaires were used for the collection of data. Quantitative data were analyzed using descriptive statistics, while qualitative data were coded and analyzed using the 4- point Likert scale, which was converted to a relative importance index (RII) for each factor posing a challenge to operators. The result showed Safety equipment was provided onboard boats by operators. The RII computed showed that boat and engine replacement (RII = 0.874) was the most challenging factor, while water hyacinth (RII = 0.418) was the most minor factor. Other challenges were frequent lousy weather conditions, high running costs, floating logs and debris, extortion by law enforcement agents, difficulty in making headway against the opposite current, high price of safety equipment, passengers’ refusal to adhere to safety measures, and poor berthing facilities in their order of impact. Proper funding and enforcement of safety measures are at this moment recommended.","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382325","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}
Any public infrastructure has a set service life limit. In the Indonesian case, the public building has a 50-year design life. This paper presents a performance assessment of a multiple-story building in Aceh-Indonesia. A multi-story Faculty of Engineering Universitas Syiah Kuala building was used in this study. This multi-story building structure has been used for more than 24 years since it was built in 1998. This structure is 29.4 m long, 13 m wide, and 14.4 m tall in geometric terms. This study reveals how this three-story building behaves, including displacement, base shear, and structure performance level per ASCE 41-17 criteria. The processes in this study are broken down into various stages, including pushover analysis and comparing the building's current natural frequency. ETABS software was used to model building structures. According to the study, the building's performance is still more or less similar to the initial plan. Pushover in the X-direction (Push X) is believed to be immediate occupancy (IO), and pushover in the Y-direction (Push Y) is believed to be life safety (LS). The pushover analysis results for Push X suggested that the structure is safe and retains rigidity. Push Y indicated minor damage within the life safety category after a service life of 24 years. This pushover analysis indicated that the structure has reduced its rigidity, making it less able to resist further displacement. Based on the base shear, which experiences a displacement that is significantly greater than the estimate at the original planning stage, it is known that stiffness decreases.
{"title":"Performance Assessment of Multi-story Building","authors":"Taufiq Saidi, Muttaqin Hasan, Imam Muzhaffar, Bambang Setiawan, Juellyan Juellyan","doi":"10.13170/aijst.12.2.31495","DOIUrl":"https://doi.org/10.13170/aijst.12.2.31495","url":null,"abstract":"Any public infrastructure has a set service life limit. In the Indonesian case, the public building has a 50-year design life. This paper presents a performance assessment of a multiple-story building in Aceh-Indonesia. A multi-story Faculty of Engineering Universitas Syiah Kuala building was used in this study. This multi-story building structure has been used for more than 24 years since it was built in 1998. This structure is 29.4 m long, 13 m wide, and 14.4 m tall in geometric terms. This study reveals how this three-story building behaves, including displacement, base shear, and structure performance level per ASCE 41-17 criteria. The processes in this study are broken down into various stages, including pushover analysis and comparing the building's current natural frequency. ETABS software was used to model building structures. According to the study, the building's performance is still more or less similar to the initial plan. Pushover in the X-direction (Push X) is believed to be immediate occupancy (IO), and pushover in the Y-direction (Push Y) is believed to be life safety (LS). The pushover analysis results for Push X suggested that the structure is safe and retains rigidity. Push Y indicated minor damage within the life safety category after a service life of 24 years. This pushover analysis indicated that the structure has reduced its rigidity, making it less able to resist further displacement. Based on the base shear, which experiences a displacement that is significantly greater than the estimate at the original planning stage, it is known that stiffness decreases.","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382328","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 : 2023-08-03DOI: 10.13170/aijst.12.2.31967
Lisa Fandana, Faisal Abdullah, Abrar Muslim, Suhendrayatna Suhendrayatna, Hesti Meilina
Silicified coal (SC) consisting of SiO2 is promising raw material for adsorbent. The present study aimed to utilize the adsorbent of silicified coal bottom ash (SCBA) by calcination of the SC at the temperature of 600, 800 and 1000 oC for 1 hour. The FTIR result showed that the SCBA-600, SCBA-800 and SCBA-1000 had chemical functional groups such as the asymmetric Si-O-Si, the symmetric Si-O-Si and Si-O-Si bond rocking for adsorption of phosphate (PO43−) with the lowest percentage of transmittance of SCBA-1000. The adsorption test showed that a rapid adsorption occurred in the first 10-min of contact time, and it did not change significantly for the rest of contact time until reaching an equilibrium time of 30 min. The PO43− adsorption efficiency and capacity fluctuated over initial PO43− in solution in the range of 60.02–480.29 mg/L. The highest PO43− adsorption efficiency and capacity was at 480.29 mg/L, which was 95.49 % and 45.86 mg/g, respectively using the SCBA-1000. The adsorption kinetic fitted better to pseudo second-order kinetics model (average R2 = 0.999) with the adsorption capacity of 45.454, 45.662 and 45.872 for the SCBA_600, SCBA_800 and SCBA_1000, respectively, and the PO43− adsorption rate was 0.0007, 0.0008 and 0.001 g/mg.min, respectively. The adsorption isotherm followed Langmuir model (average R2 = 0.873) with the adsorption capacity being 2.357, 1.198 and 8.196 mg/g, respectively, and the pore volume being 0.0316, 0.0364 and 0.2103 L/mg, respectively
{"title":"Adsorption of Phosphate from Aqueous Solution by Calcination of Silicified Coal: Kinetic and Isotherm Studies","authors":"Lisa Fandana, Faisal Abdullah, Abrar Muslim, Suhendrayatna Suhendrayatna, Hesti Meilina","doi":"10.13170/aijst.12.2.31967","DOIUrl":"https://doi.org/10.13170/aijst.12.2.31967","url":null,"abstract":"Silicified coal (SC) consisting of SiO2 is promising raw material for adsorbent. The present study aimed to utilize the adsorbent of silicified coal bottom ash (SCBA) by calcination of the SC at the temperature of 600, 800 and 1000 oC for 1 hour. The FTIR result showed that the SCBA-600, SCBA-800 and SCBA-1000 had chemical functional groups such as the asymmetric Si-O-Si, the symmetric Si-O-Si and Si-O-Si bond rocking for adsorption of phosphate (PO43−) with the lowest percentage of transmittance of SCBA-1000. The adsorption test showed that a rapid adsorption occurred in the first 10-min of contact time, and it did not change significantly for the rest of contact time until reaching an equilibrium time of 30 min. The PO43− adsorption efficiency and capacity fluctuated over initial PO43− in solution in the range of 60.02–480.29 mg/L. The highest PO43− adsorption efficiency and capacity was at 480.29 mg/L, which was 95.49 % and 45.86 mg/g, respectively using the SCBA-1000. The adsorption kinetic fitted better to pseudo second-order kinetics model (average R2 = 0.999) with the adsorption capacity of 45.454, 45.662 and 45.872 for the SCBA_600, SCBA_800 and SCBA_1000, respectively, and the PO43− adsorption rate was 0.0007, 0.0008 and 0.001 g/mg.min, respectively. The adsorption isotherm followed Langmuir model (average R2 = 0.873) with the adsorption capacity being 2.357, 1.198 and 8.196 mg/g, respectively, and the pore volume being 0.0316, 0.0364 and 0.2103 L/mg, respectively","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382706","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 : 2023-08-03DOI: 10.13170/aijst.12.2.30813
Qunazatul Shima Batubara, Tomi Erfando
Waterflooding is one of the most frequently used EOR methods to increase oil recovery because it can increase 30% -60% of total production. It is necessary to apply a production system performance prediction approach to minimize uncertainty in increasing production figures, such as analytical methods and numerical methods. Artificial Intelligence in the world of oil and gas is not a new thing, but it has often been used in various fields such as exploration, drilling, production, and reservoirs. So this is the basis for the prediction of the success of waterflooding research carried out. The purpose of this research was to predict the success rate of waterflooding using an Artificial Neural Network (ANN). The method used in this study is the simulation research method using CMG Imex for reservoir simulation modeling, running CMG CMOST for 500 sensitivity data with the input of seven parameters of compressibility, horizontal permeability, vertical permeability, pressure injection, injection rate, thickness, oil saturation, and the output is recovery factor using Artificial Neural Network (ANN) with a ratio of 70% of the RF calculation model results for training and 30% model results for testing. In order to get optimal prediction results, trial, and error were carried out on the number of hidden layer nodes, so that optimal and stable hidden layer nodes were obtained at node 10 with RMSE values of 0.339035 for training and 0.442663 for testing and MAPE for training 1.15% and 1.62% for testing. The statistical analysis value is 0.906139 for training and 0.899525 for testing data. It can be concluded from this study that the use of ANN in predictions using ten hidden layer nodes proved to be very good and successful, and predictions in this study were classified as High Accurate Prediction.
水驱是最常用的提高采收率的方法之一，因为它可以提高总产量的30% -60%。有必要应用生产系统性能预测方法，如解析方法和数值方法，以最大限度地减少生产数据增加的不确定性。人工智能在油气领域并不是一个新鲜事物，但它经常被用于勘探、钻井、生产和储层等各个领域。因此这是成功进行水驱预测研究的基础。本研究的目的是利用人工神经网络(ANN)预测注水成功率。本研究采用的方法是采用CMG Imex油藏模拟建模的模拟研究方法，对500个敏感性数据运行CMG CMOST，输入压缩率、水平渗透率、垂直渗透率、注入压力、注入速率、厚度、含油饱和度7个参数，输出采收率，采用人工神经网络(ANN)，以70%的RF计算模型结果进行训练，30%的模型结果进行测试。为了得到最优的预测结果，对隐藏层节点数进行试错，在节点10处得到最优稳定的隐藏层节点，训练的RMSE值为0.339035，测试的RMSE值为0.442663，训练的MAPE值为1.15%，测试的MAPE值为1.62%。训练数据的统计分析值为0.906139，测试数据的统计分析值为0.899525。从本研究中可以得出结论，ANN在使用10个隐藏层节点的预测中被证明是非常好的和成功的，本研究的预测被归类为High Accurate Prediction。
{"title":"The Successful Prediction Of Waterflooding Using A Feed Forward Algorithm","authors":"Qunazatul Shima Batubara, Tomi Erfando","doi":"10.13170/aijst.12.2.30813","DOIUrl":"https://doi.org/10.13170/aijst.12.2.30813","url":null,"abstract":"Waterflooding is one of the most frequently used EOR methods to increase oil recovery because it can increase 30% -60% of total production. It is necessary to apply a production system performance prediction approach to minimize uncertainty in increasing production figures, such as analytical methods and numerical methods. Artificial Intelligence in the world of oil and gas is not a new thing, but it has often been used in various fields such as exploration, drilling, production, and reservoirs. So this is the basis for the prediction of the success of waterflooding research carried out. The purpose of this research was to predict the success rate of waterflooding using an Artificial Neural Network (ANN). The method used in this study is the simulation research method using CMG Imex for reservoir simulation modeling, running CMG CMOST for 500 sensitivity data with the input of seven parameters of compressibility, horizontal permeability, vertical permeability, pressure injection, injection rate, thickness, oil saturation, and the output is recovery factor using Artificial Neural Network (ANN) with a ratio of 70% of the RF calculation model results for training and 30% model results for testing. In order to get optimal prediction results, trial, and error were carried out on the number of hidden layer nodes, so that optimal and stable hidden layer nodes were obtained at node 10 with RMSE values of 0.339035 for training and 0.442663 for testing and MAPE for training 1.15% and 1.62% for testing. The statistical analysis value is 0.906139 for training and 0.899525 for testing data. It can be concluded from this study that the use of ANN in predictions using ten hidden layer nodes proved to be very good and successful, and predictions in this study were classified as High Accurate Prediction.","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382321","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 existence of forest park areas plays an essential role as carbon sequestration can reduce the concentration of greenhouse gases in the atmosphere. Analysis of carbon potential is essential in determining the amount of available carbon potential. This study aims to analyze the carbon potential in the forest park area Pocut Meurah Intan Forest Park. The study used a descriptive method with the sampling technique of the path system. Data analysis and calculation of carbon potential using allometric equations to calculate the total biomass. Spatial analysis using Arc.GIS 10.4 software and the carbon content analysis was carried out using the ashing method. The results showed that the potential carbon stock of Pocut Meurah Intan Forest Park was 640,282 tons. The carbon potential is the carbon stored above the ground in the form of carbon from above-ground biomass (trees, poles, saplings, undergrowth) and organic matter (necromass and litter). The highest carbon potential was found in the secondary dryland forest land cover with a total of 555,204 tons or 167.6 tons/ha, followed by shrubs of 78,949 tons or 33.3 tons/ha, and the lowest potential carbon stock was found in the open field of 303 tons or 2.8 tons/ha. The increase in land cover in secondary dryland forests causes the increase in carbon stored. The low potential for carbon stocks is due to land clearing and a small number of stands, resulting in a decrease in potential carbon stocks
森林公园的存在起着至关重要的作用，因为固碳可以降低大气中温室气体的浓度。碳势分析是确定可利用碳势量的必要条件。本研究旨在分析Pocut Meurah Intan森林公园区域的碳潜力。本研究采用路径系统抽样技术的描述方法。利用异速生长方程计算总生物量的数据分析与碳势计算。使用Arc进行空间分析。采用GIS 10.4软件，采用灰化法进行含碳量分析。结果表明:坡切默拉因坦森林公园的潜在碳储量为640282 t。碳势是以碳的形式从地上生物量(树木、杆状物、树苗、灌木)和有机物(坏死物和凋落物)中储存在地面上的碳。次生旱地森林土地覆盖碳潜力最高，为555,204 t (167.6 t /ha)，灌木次之，为78,949 t (33.3 t /ha)，裸地碳潜力最低，为303 t (2.8 t /ha)。次生旱地森林土地覆盖的增加导致碳储量的增加。碳储量潜力低是由于土地清理和林分数量少，导致潜在碳储量减少
{"title":"Study on Potential Carbon in Pocut Meurah Intan Forest Park, Aceh Province","authors":"Syakur Syakur, Sugianto Sugianto, Hairul Basri, Rahmad Fadhli","doi":"10.13170/aijst.12.2.31949","DOIUrl":"https://doi.org/10.13170/aijst.12.2.31949","url":null,"abstract":"The existence of forest park areas plays an essential role as carbon sequestration can reduce the concentration of greenhouse gases in the atmosphere. Analysis of carbon potential is essential in determining the amount of available carbon potential. This study aims to analyze the carbon potential in the forest park area Pocut Meurah Intan Forest Park. The study used a descriptive method with the sampling technique of the path system. Data analysis and calculation of carbon potential using allometric equations to calculate the total biomass. Spatial analysis using Arc.GIS 10.4 software and the carbon content analysis was carried out using the ashing method. The results showed that the potential carbon stock of Pocut Meurah Intan Forest Park was 640,282 tons. The carbon potential is the carbon stored above the ground in the form of carbon from above-ground biomass (trees, poles, saplings, undergrowth) and organic matter (necromass and litter). The highest carbon potential was found in the secondary dryland forest land cover with a total of 555,204 tons or 167.6 tons/ha, followed by shrubs of 78,949 tons or 33.3 tons/ha, and the lowest potential carbon stock was found in the open field of 303 tons or 2.8 tons/ha. The increase in land cover in secondary dryland forests causes the increase in carbon stored. The low potential for carbon stocks is due to land clearing and a small number of stands, resulting in a decrease in potential carbon stocks","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382703","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 : 2023-08-03DOI: 10.13170/aijst.12.2.27188
Nova Risdiyanto Ismail, Dadang Hermawan, Purbo Suwandono, Leo Hutri Wicaksono
Passive Solar is still suitable for Indonesia's islands and coastal areas. Various attempts have been made to increase the performance of passive solar stills, including using porous materials, fins absorber models, and making water in the form of a thin layer. This study aims to increase the distillate output and Efficiency of Solar still. This study's method compares stone fin solar stills absorbers using water depth variations of 1 cm, 2 cm, and 3 cm with conventional solar stills at a water depth of 1 cm. The study resulted in the distillate output of stone fin solar still absorber of 3.35 (liter/m2.day) higher than the conventional solar stills 2.44 (liter/m2.day) at a depth of 1 cm. The highest Efficiency of solar stills using the stone fin solar still absorbers is 58.45% higher than conventional solar stills, 43.60% at a depth of 1 cm. Solar stills with lower water depths resulted in higher distillate output and Efficiency. Solar stills using stone fin absorbent plates produce higher productivity and Efficiency than conventional ones
{"title":"Investigation of Performance of Stone Fin Solar Still Absorber by Water Depth Variations.","authors":"Nova Risdiyanto Ismail, Dadang Hermawan, Purbo Suwandono, Leo Hutri Wicaksono","doi":"10.13170/aijst.12.2.27188","DOIUrl":"https://doi.org/10.13170/aijst.12.2.27188","url":null,"abstract":"Passive Solar is still suitable for Indonesia's islands and coastal areas. Various attempts have been made to increase the performance of passive solar stills, including using porous materials, fins absorber models, and making water in the form of a thin layer. This study aims to increase the distillate output and Efficiency of Solar still. This study's method compares stone fin solar stills absorbers using water depth variations of 1 cm, 2 cm, and 3 cm with conventional solar stills at a water depth of 1 cm. The study resulted in the distillate output of stone fin solar still absorber of 3.35 (liter/m2.day) higher than the conventional solar stills 2.44 (liter/m2.day) at a depth of 1 cm. The highest Efficiency of solar stills using the stone fin solar still absorbers is 58.45% higher than conventional solar stills, 43.60% at a depth of 1 cm. Solar stills with lower water depths resulted in higher distillate output and Efficiency. Solar stills using stone fin absorbent plates produce higher productivity and Efficiency than conventional ones","PeriodicalId":7128,"journal":{"name":"Aceh International Journal of Science and Technology","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136382707","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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