Journal of Advanced Technology and Multidiscipline最新文献

Synthesis of Cu-Ag core-shell nanoparticles and its electrochemical characterization Cu-Ag核壳纳米粒子的合成及其电化学表征

Journal of Advanced Technology and Multidiscipline Pub Date : 2023-05-31 DOI: 10.20473/jatm.v2i1.43717

Laurencia G. Sutanto, Y. B. Cristian, Jihan N Adzijah, Imanda Widianti, P. K. Jiwanti

{"title":"Synthesis of Cu-Ag core-shell nanoparticles and its electrochemical characterization","authors":"Laurencia G. Sutanto, Y. B. Cristian, Jihan N Adzijah, Imanda Widianti, P. K. Jiwanti","doi":"10.20473/jatm.v2i1.43717","DOIUrl":"https://doi.org/10.20473/jatm.v2i1.43717","url":null,"abstract":"The Cu-Ag core-shell nanoparticles (Cu@Ag NPs) are prepared by chemical reduction method with polyvinyl pyrrolidone (PVP) was used as a capping agent, ascorbic acid (C6H8O6) and sodium borohydride (NaBH4) was used as a reducing agent. Cu@Ag NPs were synthesized with three variations of (Cu:Ag) 1:3, 1:4, and 1:5.. The uniformity of Cu@Ag NPs samples with three variations was verified by the particle size analyzer test. The sizes of Cu@Ag 1:3, 1:4, and 1:5 was obtained sequentially at the range of 270-280 nm, 300-304 nm, and 690-700 nm respectively. Indications of the successful synthesis of Cu@Ag nanoparticles can be seen from UV-Vis spectra of Cu@Ag 1:3, 1:4, and 1:5 respectively forming AgNP at wavelengths of 434 nm, 450 nm, and 428 nm Furthermore, the stability of Cu@Ag NPs was carried out over a period of 0 days, 4 days, 7 days, 11 days, and 14 days. It can be observed that the variation of 1:5 tends to be more stable as the chart continues to experience significant improvements compared to the variation of 1:3 and 1:4. The electrochemical study was then performed by applying cyclic voltammetry from 0 V to 1.8 V. It is clearly shown that the peak of Cu oxidation is appeared at a potential of 1.2 V while the peak value of Ag oxidation is at a potential of 0.9 V.","PeriodicalId":384259,"journal":{"name":"Journal of Advanced Technology and Multidiscipline","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127677300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Human Development Clustering in Indonesia: Using K-Means Method and Based on Human Development Index Categories 印度尼西亚人类发展聚类:基于k -均值方法的人类发展指数分类

Journal of Advanced Technology and Multidiscipline Pub Date : 2023-05-31 DOI: 10.20473/jatm.v2i1.45070

Indah Fahmiyah, R. A. Ningrum

{"title":"Human Development Clustering in Indonesia: Using K-Means Method and Based on Human Development Index Categories","authors":"Indah Fahmiyah, R. A. Ningrum","doi":"10.20473/jatm.v2i1.45070","DOIUrl":"https://doi.org/10.20473/jatm.v2i1.45070","url":null,"abstract":"The quality of life for Indonesia's population can be measured from the human development index in each province. People who have a good quality of life indicate a prosperous life. The government has the responsibility to advance the welfare of the nation under the mandate of the constitution. The clustering of the human development index (HDI) in Indonesia is used to determine the distribution of quality of life or the distribution of social welfare. In this study, the K-Means method, which is a popular non-hierarchical clustering method, is used to classify human development in each province based on HDI indicators, namely Expected Years of Schooling, Mean Years of Schooling, Adjusted Per Capita Expenditure, and Life Expectancy at Birth. Provinces in Indonesia are clustered into 4 clusters. These results were also compared with the clustering based on HDI categories determined by Statistics Indonesia based on certain cut-off values. According to the HDI category, provinces in Indonesia fall into the medium, high, and very high categories. The results of the two groupings show that there is a trend toward appropriate characteristics for each group. Thus, K-Means can classify provinces in Indonesia according to the characteristics of the HDI indicators.","PeriodicalId":384259,"journal":{"name":"Journal of Advanced Technology and Multidiscipline","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133743224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modification of the Vertical Axis with Variations in the Number of Blades of the Savonius Wind Turbine 萨沃纽斯风力机叶片数变化对垂直轴的影响

Journal of Advanced Technology and Multidiscipline Pub Date : 2023-05-31 DOI: 10.20473/jatm.v2i1.40610

Herman Nawir, M. Djalal, Adnan Ainun Hasri, Andi Wely Fauziah

{"title":"Modification of the Vertical Axis with Variations in the Number of Blades of the Savonius Wind Turbine","authors":"Herman Nawir, M. Djalal, Adnan Ainun Hasri, Andi Wely Fauziah","doi":"10.20473/jatm.v2i1.40610","DOIUrl":"https://doi.org/10.20473/jatm.v2i1.40610","url":null,"abstract":"The potential wind speed in Indonesia is generally low at 3 m/s to 7 m/s so that this type of vertical axis turbine is considered very suitable for use in wind conditions in Indonesia. There are several types of vertical axis wind turbines. One type of vertical axis wind turbine is the Savonius wind turbine. Many advantages that this type of wind turbine has, such as being able to receive wind from all directions, easy and cheap to manufacture, and can rotate at a fairly low angular speed. This test was carried out to determine the performance of conventional and modified savonius turbines with 2 and 3 blades variables in each turbine blade shape. The form of modification made is by changing the shape of the blade twisting by 45o. The turbine is carried out on a laboratory scale with a wind source using a fan that is directly opposite the turbine. The results showed that the highest turbine power occurred in a modified 2-blade turbine, namely 1.88 Watt with a torque value of 0.04 Nm and a shaft rotation of 450 rpm. The highest rotation value is also obtained by 2 modified blades at a wind speed of 6 m/s producing 896 rpm. However, the highest torque value is obtained by a conventional 2-blade turbine with a value of 0.136 Nm. The highest turbine efficiency in each turbine is obtained by a modified 2 blade turbine with an efficiency value of 36.92% while the highest turbine efficiency for a modified 3 blade turbine reaches 11.69% which is considered less efficient than other turbines.","PeriodicalId":384259,"journal":{"name":"Journal of Advanced Technology and Multidiscipline","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121978760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In Silico Analysis of Chalcone Derivatives as Potential Antibacterial Agents against DHPS Enzyme 查尔酮衍生物作为DHPS酶潜在抗菌剂的硅分析

Journal of Advanced Technology and Multidiscipline Pub Date : 2023-05-31 DOI: 10.20473/jatm.v2i1.43817

Ilma Amalina, Ni Nyoman Tri Puspaningsing, Hery Suwito

{"title":"In Silico Analysis of Chalcone Derivatives as Potential Antibacterial Agents against DHPS Enzyme","authors":"Ilma Amalina, Ni Nyoman Tri Puspaningsing, Hery Suwito","doi":"10.20473/jatm.v2i1.43817","DOIUrl":"https://doi.org/10.20473/jatm.v2i1.43817","url":null,"abstract":"Chalcone and its derivatives have been reported to perform as antibacterial agents. With the increasing threat of antibacterial resistance in pharmaceutical sector today, the discovery of new antibacterial agents is essential to accomplish good health and well-being in supporting Sustainable Development Goals (SDGs) point 4. In silico analysis is a method used to evaluate some candidates of active compounds before the synthesis process is conducted. This study aims to investigate three chalcone derivatives as potential antibacterial agents using in silico method of molecular docking. The three chalcone derivatives, 3-(4-methoxyphenyl)1-phenylprop-2-en-1-one (1), 1-(4-aminophenyl)-3-(4- methoxyphenyl) prop-2-en-1-one (2) and 1-(4-bromophenyl)-3-(4-methoxyphenyl)prop-2-en-1-one (3), were designed as pABA competitive inhibitor on DHPS and analyzed against Eschericia coli. This inhibitory mechanism was folate synthesis inhibition as precursor to DNA and RNA synthesis. Molecular docking of three chalcone derivatives with DHPS was generated using Autodock4. The results of this study showed that free energy binding (kcal/mol) of compounds (1), (2) and (3) were -6.27, -5.35 and -5.77, respectively. Besides, the Ki constant for three compounds in order were 25.50 µM, 120.32 µM and 58.84 µM, respectively. In fact, the molecular docking positions illustrated that three chalcone derivatives occupied the active site cleft. Specifically, compound (1) indicated the best outcome among the two other candidates. Meanwhile, sulfadiazine molecular docking as positive control showed lower free binding energy (-0.86 kcal/mol) and Ki constant (233.19 mM) compared to three other candidates. Therefore, three chalcone derivatives analyzed in this study demonstrated a role as potential antibacterial agents.","PeriodicalId":384259,"journal":{"name":"Journal of Advanced Technology and Multidiscipline","volume":"497 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134111503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Image Classification on Fashion Dataset Using Inception V3 基于Inception V3的时尚数据集图像分类

Journal of Advanced Technology and Multidiscipline Pub Date : 2023-05-31 DOI: 10.20473/jatm.v2i1.44131

Maryamah, Maryamah Maryamah, Najma Attaqiyah Alya, Muhammad Hanif Sudibyo, Ergidya Liviani, Razin Isyraq Thirafi

{"title":"Image Classification on Fashion Dataset Using Inception V3","authors":"Maryamah, Maryamah Maryamah, Najma Attaqiyah Alya, Muhammad Hanif Sudibyo, Ergidya Liviani, Razin Isyraq Thirafi","doi":"10.20473/jatm.v2i1.44131","DOIUrl":"https://doi.org/10.20473/jatm.v2i1.44131","url":null,"abstract":"Fashion is a form of self-expression that allows us to be able to manifest our personality and identity more confidently. One of the effects of Covid 19 is the economics of the industry, especially the fashion category as the largest category in the e-commerce industry. However, A large number of categories in each fashion brand allows shop owners to be misclassifications about the placement of items that have nearly the same clothing model. The other problem is sellers uploading pictures of products on the platform for the sale and the consequent manual tagging involved. In this paper, we proposed image classification on the fashion dataset using inception V3. The methodology of this paper consists of scrapping data from the official websites of five famous fashion brands, data preprocessing, and classification with the Inception V3 method. The accuracy and F1-Score values obtained using Inception V3 are 92.86% and 92.85%. The proposed method is the highest result of the comparison method and can differentiate between knitted with a scarf that is difficult to classify when compared to other comparison methods.","PeriodicalId":384259,"journal":{"name":"Journal of Advanced Technology and Multidiscipline","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128958543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Small Signal Stability Analysis of Two Stage PV Generation 两级光伏发电小信号稳定性分析

Journal of Advanced Technology and Multidiscipline Pub Date : 2022-11-23 DOI: 10.20473/jatm.v1i2.40339

R. P. Prastio, M. Setiawan, Rodik Wahyu Indrawan, H. Setiadi

引用次数: 0

Design of Automatic Transfer Switch on A Renewable Energy Hybrid Grid System at PT Lentera Bumi Nusantara Lentera Bumi Nusantara水电站可再生能源混合电网系统自动转换开关设计

Journal of Advanced Technology and Multidiscipline Pub Date : 2022-11-23 DOI: 10.20473/jatm.v1i2.40293

M. Abdillah, Tri Mutia, Teguh Aryo Nugroho, Nita Indriani Pertiwi

引用次数: 0

Comparison of PSO, DE and Hybrid DE-PSO for LFC of Wind Power Systems 风电系统LFC的PSO、DE和混合DE-PSO比较

Journal of Advanced Technology and Multidiscipline Pub Date : 2022-11-23 DOI: 10.20473/jatm.v1i2.40451

Rodik Wahyu Indrawan, H. Setiadi, Muhammmad Aldo Setiawan, R. P. Prastio

引用次数: 0

Physiological Workload Analysis on the Use of Face Masks during Physical Activities 体育活动中使用口罩的生理负荷分析

Journal of Advanced Technology and Multidiscipline Pub Date : 2022-11-23 DOI: 10.20473/jatm.v1i2.40345

Shofa Aulia Aldhama, Chandrawati Putri Wulandari, Rike Surya Shafarani, Valencia Tesalonika, Priskila Yohana, Tozati Intan Ramadhani, Gilang Fadly Hassani

引用次数: 0

Design Voltage Controller of Bipolar SPWM Voltage Source Inverter 双极SPWM电压源逆变器的电压控制器设计

Journal of Advanced Technology and Multidiscipline Pub Date : 2022-11-23 DOI: 10.20473/jatm.v1i2.40170

Irna Tri Yuniahastuti, Senoaji

引用次数: 0