Jurnal Teknologi最新文献_第3页

NUMERICAL STUDY OF THE RESISTANCE REDUCTION IN HYBRID MINI-SUBMARINE 混合动力小型潜艇减阻数值研究

Jurnal Teknologi Pub Date : 2024-06-02 DOI: 10.11113/jurnalteknologi.v86.20816

F. A. Rayhan, T. A. Nugraha, H. R. Akhira, Y. Pratiwi, R. Hatuwe

{"title":"NUMERICAL STUDY OF THE RESISTANCE REDUCTION IN HYBRID MINI-SUBMARINE","authors":"F. A. Rayhan, T. A. Nugraha, H. R. Akhira, Y. Pratiwi, R. Hatuwe","doi":"10.11113/jurnalteknologi.v86.20816","DOIUrl":"https://doi.org/10.11113/jurnalteknologi.v86.20816","url":null,"abstract":"Hybrid mini-submarine is a single innovative ship combining the concepts of conventional fast ships, hydrofoils, and submarine with the specific mission of safeguarding national sovereignty. This study was conducted to analyze the reduction of resistance in this mini-submarine by examining the positioning and shape of NACA hydrofoils. The process involved adjusting the positions of NACA hydrofoils and incorporating different configurations. This was indicated by the inclusion of nine speed configuration in the hydrofoil mode, eight in the conventional mode, and five in the submarine mode. Moreover, Computational Fluid Dynamics (CFD) simulation was applied for analysis using the Ansys CFX software. The results showed that the positioning of the NACA hydrofoils at close proximity reduced the resistance. The selection of symmetrical and slender configuration was also observed to optimize the reduction of resistance. Moreover, the combination of position and NACA hydrofoil 0012 produced an average resistance reduction of up to 12.52%. The configured model successfully reduced the total ship resistance and also identified the optimal position and shape configuration for the NACA hydrofoils. These findings provided valuable insights into the components and characteristics of total ship resistance and served as a valuable reference for further research on the development of maritime security technology.","PeriodicalId":55763,"journal":{"name":"Jurnal Teknologi","volume":"21 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141273939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANALYSIS OF LUBRICANT OIL DEGRADATION AND SOUND PRESSURE LEVEL FOR CI ENGINE USING BLEND FUELS 使用混合燃料的 Ci 发动机的润滑油降解和声压级分析

Jurnal Teknologi Pub Date : 2024-06-02 DOI: 10.11113/jurnalteknologi.v86.19756

Faheem Ahmed Solangi, L. A. Memon, S. R. Samo, M. R. Luhur, A. Bhutto, Ali Murtaza Ansari

{"title":"ANALYSIS OF LUBRICANT OIL DEGRADATION AND SOUND PRESSURE LEVEL FOR CI ENGINE USING BLEND FUELS","authors":"Faheem Ahmed Solangi, L. A. Memon, S. R. Samo, M. R. Luhur, A. Bhutto, Ali Murtaza Ansari","doi":"10.11113/jurnalteknologi.v86.19756","DOIUrl":"https://doi.org/10.11113/jurnalteknologi.v86.19756","url":null,"abstract":"Long-term engine running has been the subject of extensive research on the deterioration of engine oil. In contrast, it is not fully clear what effect synthetic and biofuels will have. Modern engines, traditional fuels and lubricants should be used to provide a research basis for characterizing novel fuel-related phenomena in engines. This study makes an effort to characterize how lubricating engine oil behaves over the course of its service life using data on friction and wear. Every 20 hours, oil samples from the engine were obtained to evaluate its chemical makeup. On a reciprocating test rig, friction and wear measurements were taken. Kinematic viscosity, density, and wear metals such as cadmium (Cd), cobalt (Co), and lead (Pb) were measured for the lubricant oil analysis. In general, n-pentanol aids in the reduction of engine wear debris, contamination, and lubricating oil oxidation. According to the findings of this study, a D60WCO20Pe15 ternary combination can be used in a diesel engine without any alteration. The sound pressure level (SPL) increased by 7.8 dB at engine speed of 1300 RPM in the case of the DF95WCO5. However, when compared to base line, the average SPL of D60WCO20Pe15 ternary blend was 4.3 dB lower.","PeriodicalId":55763,"journal":{"name":"Jurnal Teknologi","volume":"15 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141273511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THE EFFECT OF RIVET GUN OPERATING PRESSURE AND HOLE CLEARANCE ON RIVET SHEAR STRENGTH IN SHEET METAL RIVETING PROCESS 铆枪工作压力和孔隙对铆接板材时铆钉剪切强度的影响

Jurnal Teknologi Pub Date : 2024-06-02 DOI: 10.11113/jurnalteknologi.v86.20999

Galang Saputro, Muhammad Akhlis Rizza, U. S. Amrullah, Hangga Wicaksono

引用次数: 0

OPTIMIZATION AND VALIDATION OF FOXP3, BRAFV600E AND MMR IMMUNOHISTOCHEMISTRY STAINING PROTOCOLS Foxp3、Brafv600e 和 mmr 免疫组化染色方案的优化与验证

Jurnal Teknologi Pub Date : 2024-06-02 DOI: 10.11113/jurnalteknologi.v86.19204

R. I. Tsamiya, S. N. Mohd Nafi, Nur Asyilla Che Jalil, A. A. Mat Zin

{"title":"OPTIMIZATION AND VALIDATION OF FOXP3, BRAFV600E AND MMR IMMUNOHISTOCHEMISTRY STAINING PROTOCOLS","authors":"R. I. Tsamiya, S. N. Mohd Nafi, Nur Asyilla Che Jalil, A. A. Mat Zin","doi":"10.11113/jurnalteknologi.v86.19204","DOIUrl":"https://doi.org/10.11113/jurnalteknologi.v86.19204","url":null,"abstract":"To ensure consistent and repeatable results, t Here, we described could enhance the IHC signals of the targeted antibodies. Mismatch Repair (MMR) proteins such as MutL homolog 1 (MLH1), Mut S homolog 2 (MSH2), Mut S homolog 6 (MSH6), and postmeiotic segregation 2 (PMS2), including B-rapidly accelerated fibrosarcoma with V600E mutation (BRAFV600E) protein and forkhead box P3 (FOXP3) protein, are important for colorectal cancer diagnosis. The IHC staining was performed using different archival tissue controls and commercial antibodies. MLH1 and PMS2 showed higher staining intensity after an overnight incubation at a higher concentration of primary antibody (1:50) compared to BRAFV600E (1:100). The enhanced MSH2 signal was likewise generated at a one-hour incubation period with an equivalent antibody concentration. However, even with a shorter incubation duration of one hour, MSH6 and FOXP3 generated good IHC signals when incubated with primary antibody at a lower antibody concentration of 1:100 and 1:300, respectively. The addition of a primary antibody linker improved the IHC signals for all targeted proteins. In conclusion, when using archival tissues, modifying the aforementioned IHC staining variables produces optimal staining for the MMR, BRAFV600E, and FOXP3 proteins.","PeriodicalId":55763,"journal":{"name":"Jurnal Teknologi","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141274041","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

Porositas Serbuk Jahe Merah (Zingiber officinale Roscae var. Rubrum) terhadap Variasi Suhu dan Kadar Gula Pasir 温度和含糖量变化对红姜粉（Zingiber officinale Roscae var.

Jurnal Teknologi Pub Date : 2024-05-13 DOI: 10.34151/jurtek.v17i1.4559

Kristin Valentina Sinabutar, Dessy Agustina Sari

{"title":"Porositas Serbuk Jahe Merah (Zingiber officinale Roscae var. Rubrum) terhadap Variasi Suhu dan Kadar Gula Pasir","authors":"Kristin Valentina Sinabutar, Dessy Agustina Sari","doi":"10.34151/jurtek.v17i1.4559","DOIUrl":"https://doi.org/10.34151/jurtek.v17i1.4559","url":null,"abstract":"Ginger is one of Indonesia's most abundant and widespread cultivated plants and is widely used in people's daily lives as a raw material and additive in the manufacture of food and beverages. One type of ginger that is in great demand in the herbal beverage industry is red ginger. The bioactive compounds found in ginger include 6-gingerol, 6-paradol, 6-methylshogaol, 8-methylshogaol, 8-gingerol, 10-gingerol and 6-shogaol. Red ginger contains various bioactive compounds with pharmacological effects such as analgesic, anti-inflammatory, anti-cancer, antioxidant and cardiotonic effects. Scanning Electron Microscopy (SEM) is a microscopy technique used to produce high-resolution images of the surface of an electron sample. This study aimed to analyze the porosity of red ginger powder against variations in temperature and sugar content. The temperatures were 80 and 90°C with a sugar content of 60 and 100%. The results showed that the increase and decrease in the percentage of porosity values were caused by differences in temperature variations applied to the crystallization process. The rate of red ginger powder's porosity that approaches the fresh red ginger rate is red ginger powder at 80°C and 60% crystallization agent. The research results contributed to the characteristics of the materials used and the development of red ginger drink powder products.","PeriodicalId":55763,"journal":{"name":"Jurnal Teknologi","volume":"75 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140983121","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

Deteksi Cyberbullying Menggunakan BERT dan Bi-LSTM 使用 BERT 和 Bi-LSTM 检测网络欺凌

Jurnal Teknologi Pub Date : 2024-05-04 DOI: 10.34151/jurtek.v17i1.4636

Fidya Farasalsabila, Ema Utami, H. Hanafi

{"title":"Deteksi Cyberbullying Menggunakan BERT dan Bi-LSTM","authors":"Fidya Farasalsabila, Ema Utami, H. Hanafi","doi":"10.34151/jurtek.v17i1.4636","DOIUrl":"https://doi.org/10.34151/jurtek.v17i1.4636","url":null,"abstract":"Cyberbullying is a digital problem that is not a new phenomenon. This existed before the advent of social networks, and cyberbullying has a wide impact, including a person's mental and physiological conditions such as sadness, anxiety and depression. The main objective of this research is to develop an effective cyberbullying detection system using natural language processing techniques. The method used in this research includes the application of the BERT (Bi-Directional Encoder Representations from Transformers) and Bi-LSTM (Bi-Directional Long Short-Term Memory) models as a deep learning approach to analyze text and detect cyberbullying behavior. This approach allows the system to understand complex language contexts and capture patterns that traditional methods may find difficult to identify. Testing was carried out using a dataset that included various types of Indonesian language texts containing cyber bullying acts. The research results show that the combination of BERT and Bi-LSTM is able to provide superior detection performance with a high accuracy rate of 90% and the ability to identify variations of cyber bullying. This research makes a significant contribution to efforts to protect individuals from the negative impacts of cyber bullying through the development of a sophisticated and adaptive detection system.","PeriodicalId":55763,"journal":{"name":"Jurnal Teknologi","volume":"39 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141013751","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

Kombinasi Proses Koagulasi dan Aerasi Menggunakan Biji Asam Jawa (Tamarindus Indica) sebagai Biokoagulan pada Limbah Cair Industri Tempe 将罗望子（Tamarindus Indica）作为生物凝固剂用于淡褐色工业废液的混凝与曝气组合工艺

Jurnal Teknologi Pub Date : 2024-05-01 DOI: 10.30811/teknologi.v24i1.4845

Muhammad Nahrawi, Ratni Dewi, Harunsyah Harunsyah

引用次数: 0

Pembuatan Biofoam dari Pati Singkong dengan Tambahan Serat Selulosa dari Jerami Padi sebagai Filler 用木薯淀粉制备生物泡沫，添加稻草纤维素纤维作为填充物

Jurnal Teknologi Pub Date : 2024-05-01 DOI: 10.30811/teknologi.v24i1.5093

Nazira Muspira, F. Fachraniah, S. Syafruddin

引用次数: 0

Ekstraksi Kalium dari Abu Kulit Buah Alpukat (Persea Americana Mill) Menggunakan Pelarut Aquades 使用 Aquades 溶剂从鳄梨果皮灰（Persea Americana Mill）中提取钾

Jurnal Teknologi Pub Date : 2024-05-01 DOI: 10.30811/teknologi.v24i1.5043

Dewi Mastura, Halim Zaini, Muhammad Sami