cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Ahmad Shulhany
Contact Email
ahmad.s@untirta.ac.id
Phone
+62254-376712
Journal Mail Official
teknika@untirta.ac.id
Editorial Address
Jl. Jendral Sudirman KM 03, Cilegon 42435
Location
Kab. serang,
Banten
INDONESIA
Teknika: Jurnal Sains dan Teknologi
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 1693024X     EISSN : 26544113     DOI : http://dx.doi.org/10.36055/tjst
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering
Teknika: Jurnal Sains dan Teknologi merupakan jurnal peer-reviewed dalam Bahasa Indonesia di bidang keteknikan, diantaranya bidang teknik sipil, bidang teknik mesin, bidang teknik industri, bidang teknik kimia, bidang teknik metalurgi, dan bidang teknik elektro.
Arjuna Subject : -
Articles 318 Documents
 26   27   28   29   30 
Prototype of blood sugar measuring instrument with non invasive method using near infrared Saraswati, Irma; Dzaky, Muhammad Fikri; Haryanto, Heri
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.23146

Abstract

At present the measurement of blood sugar still uses an invasive tool, this disrupts the patient's comfort and can cause infection and pain. So that a non-invasive tool is needed to measure blood sugar. Tool testing was done by measuring blood sugar levels in 35 patients and seeing a correlation between the value of blood sugar levels with ADC. The test results showed that the value of changes in blood sugar levels followed y = -0.146x + 164.89 Coefficient value R = 0.9233 The value of the accuracy of the tool was 91.086% and the precision of 94.3026%. Blood sugar measuring devices that have been designed to monitor the blood sugar of users by using the internet. This blood sugar meter cannot be used as a reference for the actual blood sugar level. However, the realization of this tool can still determine a rough estimate of the high and low levels of sugar in the blood.
Microstrip antenna design for use in 4G communication network systems Ramadhon, M. Reza; Aribowo, Didik; Cahyono, Bagus Dwi
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.22626

Abstract

4G service coverage only reaches 52.90% of the total area in Indonesia, with an average internet speed of 11.12 Mbps which is one of the lowest internet speeds in Southeast Asia. The increasing need for internet also affects all aspects of life if internet services are still not optimal. This research was conducted with the aim of producing a microstrip antenna to be used as a supporting antenna to get better internet quality, as well as providing additional insight for the general public about the concept of microstrip antennas starting from planning, designing, testing, and using microstrip antennas. In this research, a microstrip antenna is made using the peripheral slits method, to work at frequencies of 1800-2400 MHz for 4G networks. microstrip antennas will pay attention and be analysed on the parameters of return loss (S-11), VSWR (Voltage Standing Wave Ratio), bandwidth, and antenna gain. simulation results for several parameters such as return loss which gets a value of -13.33639 dB and the VSWR value is obtained at 1.5489645 at a working frequency of 2311 MHz. The Gain magnitude obtained is 2.35 dBi and the antenna bandwidth value obtained is 30.6 MHz. These values have met the criteria of a good microstrip antenna and are ready to be fabricated and implemented which can be useful for improving the quality of public internet usage.
Analysis of tourism carrying capacity at KSPP Tanjung Lesung as part of sustainable marine tourism development Laksana, April; Huda, Miftahul; Kenedi, Kenedi
Jurnal Teknika Vol 19, No 2 (2023): AVAILABLE ONLINE IN NOVEMBER 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i2.21941

Abstract

Marine tourism is one of the tourism sectors with significant potential for development in the province of Banten. However, the development of this sector must be carried out with consideration for the principles of sustainable development. In the context of marine tourism, the assessment of tourism carrying capacity becomes crucial as marine tourist attractions are prone to environmental damage and social issues. Tourism carrying capacity assessment (TCCA) is one approach that can be used to evaluate how many tourists visits a destination can handle without harming the environment or reducing the quality of the tourist experience. TCCA analysis is conducted by considering aspects such as economic facilities, socio-cultural, and ecological environment. This research aims to assess the tourism carrying capacity at Tanjung Lesung Tourism Special Economic Zone as part of sustainable marine tourism development, based on which supporting aspects need to be developed and to determine the coupling coordination among these three aspects. The aspect that needs development is the ecological environmental aspect with a performance level of 8.79%. Meanwhile, the lowest degree of coordination relationship among systems that needs improvement is the relationship between socio-cultural and ecological environmental aspects, with a degree value of 0.64899. 
Comparison of strength and stability of bicycle frames made from 6061-T6 Aluminum (SS) and Commercially Pure CP-Ti UNS R50700 Grade 4 (SS) materials Muhlisin, Iip; Feblidiyanti, Niera
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.24163

Abstract

This study examines the comparison of strength and stability between two commonly used materials in bicycle frame manufacturing, Aluminum 6061-T6 (SS) and Commercially Pure CP-Ti UNS R50700 Grade 4 (SS), through simulations using SolidWorks software. By analyzing the mechanical response of bicycle frames made from these materials under static loading conditions, the research focuses on mechanical characteristics, stress distribution, strain, safety factors, and structural stability. The results reveal significant differences in material response and structural performance between Aluminum 6061-T6 (SS) and Commercially Pure CP-Ti UNS R50700 Grade 4 (SS). These findings provide crucial insights into material selection for bicycle frame design, aiming to achieve an optimal balance between strength, elasticity, and stability. The practical significance of these findings lies in their potential applications in the bicycle industry, where understanding the strengths and limitations of different materials can lead to better-informed decisions in frame design. By optimizing material selection based on specific performance requirements, manufacturers can develop bicycle frames that cater to a wide range of uses, from high-performance sports models to durable, everyday commuting bikes. These insights serve as a foundation for further research and the development of superior bicycle frame designs, ultimately enhancing efficiency and performance in real-world applications.
Preliminary study-design of a piezoelectric floor energy harvester Susilo, Sidik; Listijorini, Erny; Ahendyarti, Ceri; Febrianto, Ilham; Adhiwindoro, Akhmad
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.23034

Abstract

A piezoelectric-based electrical energy harvesting device has been designed using a cantilever method that originates from mechanical pressure from humans climbing stairs. The method in this research uses an experimental method where there are variations in the load given by humans of 55 Kg, 65 Kg, and 75 Kg to provide force on an energy harvester that has 4 piezoelectric circuits installed, 38 of which are installed in series and parallel. piezoelectric, where the four circuits have a number of piezoelectrics of 10, 8, 10 and 8 piezoelectrics on each side. The resulting voltage will later be rectified using a rectifier bridge until it will be temporarily stored in the capacitor. The voltage is rectified using a rectifier bridge and stored in capacitors. The test was carried out in conditions where the respondent was walking leisurely and running. The results obtained without a rectifier circuit is 0.87 V, 1.06 V, 1.08 V. For a parallel circuit it is 0.78 V, 0.87 V, 0.96 V. In the rectifier circuit, it is obtained for a series circuit of 0.53 V, 0.66 V, 0.75 V. Electric current 0.01 mA, 0.03, 0.06 mA for parallel circuits 0.46 V, 0.78 V, 1.07 V and electric current 0.05 mA, 0.06 mA, 0.019 mA.
Analysis of groundwater level fluctuations and groundwater quality at Benoa and Tanjung Benoa Village, Bali Province, Indonesia Ardana, Putu Doddy Heka; Soriarta, I Ketut; Affandi, Muhammad
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.22461

Abstract

Benoa and Tanjung Benoa Village in Badung Regency is growing every year. Population growth impacts the increasing demand for clean water, which groundwater dominates. This affects the fluctuation of groundwater level and groundwater quality. This research method is descriptive and quantitative based on field observation and laboratory tests. Groundwater level fluctuations were observed for 12 months to determine the difference between the rainy and dry seasons. This research aims to determine changes in the dynamics of groundwater conditions in the Benoa and Tanjung Benoa villages. Based on the analysis results, the groundwater table fell 0.9 m in the dry season and rose 0.74 m in the wet season. The minimum pH value was 6.01; the maximum pH was 7.24. The average conductivity was 921-1,003 μs/cm. The average water temperature was 27.4˚C to 28.2˚C. The lowest chloride concentration averaged 68.69-76.40 mg/L, and the highest was 92.3-98.8 mg/L. Dissolved oxygen ranged from 5.9 to 7.2 mg/L.
Influence of chitosan addition on the properties and characteristics of acrylic acid-chitosan based superabsorbent prepared through gamma irradiation technique and its application for urea loading Jayanudin, Jayanudin; Lestari, Retno Sulistyo D.; Barleany, Dhena Ria; Pitaloka, Alia Badra; Yulvianti, Meri; Demustila, Harly; Yulianto, Amin; Anggoro, Dendy Vito; Ruhiatna, Adam
Jurnal Teknika Vol 19, No 2 (2023): AVAILABLE ONLINE IN NOVEMBER 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i2.20842

Abstract

Superabsorbent can be used as a carrier for urea-fertilizer which can release urea slowly and can be used as a dry soil moisturizer. The main goal of the current study was to investigate the influence of adding chitosan grafted onto acrylic acid as a superabsorbent base material on the properties and characteristics of the resulting superabsorbents. The method used to prepare the superabsorbent was the gamma irradiation technique. Acrylic acid was neutralized by adding KOH, and then chitosan was added. The mixture was put in a plastic container, followed by irradiation with gamma rays. The formed superabsorbent was washed and dried in an oven, then the dry superabsorbent was analyzed for its properties and characteristics. The results showed that superabsorbent properties such as swelling ratio (from 49.38 g/g to 49.38 g/g), water retention (0.43%-0.89% after 7 days), and urea loading (86.75% to 96.4%) were affected by the amount of chitosan added. However, adding too much chitosan can reduce the superabsorbent properties. The characterization of the superabsorbent revealed a smooth surface with a porous structure, and FTIR analysis showed that chitosan was grafted onto acrylic acid.   
Hierarchical clustering algorithm-dendogram using Euclidean and Manhattan distance Mukhtar, Mukhtar; Majahar Ali, Majid Khan; Arina, Faula; Wicaksono, Agung Satrio; Ikhsan, Aulia; Budiaji, Weksi; Abdullah, Syarif; Pertiwi, Dinda Dwi Anugrah; Zidny, Robby; Oktarisa, Yuvita; Sukarna, Royan Habibie
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.23187

Abstract

This paper presents the outcomes of a research experiment on the drying process of seaweed. There are numerous approaches to clustering data, such as partitioning and the Hierarchical Clustering Algorithm (HCA). The HCA has been implemented in binary tree structures to visualize data clustering. We conducted a comparative analysis of the four primary methodologies utilized in HCA, namely: 1) single linkage, 2) complete linkage, 3) average linkage, and 4) Ward's linkage. Clustering validation is widely recognized as a crucial issue that significantly impacts the effectiveness of clustering algorithms. Clustering validation can be identified, such as internal and external validation. Internal clustering validation, in particular, holds significant importance in the realm of data science. With this article, the main goal is to do an empirical evaluation of the traits that a representative set of internal clustering validation indices, namely Connectivity, Dunn, and Silhouette, show. In this paper, the HCA applies two distance functions between Euclidean and Manhattan distances to analyze the entanglement function and internal validity.
Static and dynamic GPS receiver verification tests using software defined radio Kliwati, Sri; Wiryadinata, Romi; Muttakin, Imamul; Setyawan, Haris; Rustamaji, Rustamaji; Widada, Wahyu
Jurnal Teknika Vol 20, No 1 (2024): Available Online in June 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i1.22637

Abstract

Global Positioning System (GPS) is widely used in a variety of fields, including aircraft applications and rockets where speeds exceed standards. Signal simulators, which are relatively expensive, are required to test commercial GPS devices and GPS signal processing methods. The methodology for verifying GPS receiver specifications using a Software Defined Radio (SDR)-based simulator is described in this paper. Simulator tests are run in both static and dynamic modes. The test findings demonstrate that the system can measure altitude and speed, but only up to 50 km and 500 m/s, respectively, according to commercial GPS specifications. This simulator system can be used to evaluate future GPS processing algorithms in highly dynamic environments.
Lovebird image classification based on convolutional neural network Auni, Amelia Gizzela Sheehan; Sari, Christy Atika; Rachmawanto, Eko Hari; Doheir, Mohamed
Jurnal Teknika Vol 19, No 2 (2023): AVAILABLE ONLINE IN NOVEMBER 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i2.21946

Abstract

Lovebird is a type of bird from the Psittacidae family, consisting of 90 generations. One of them is the genus Agapornis Selby or Lovebird, which has 9 species. In recognizing the differences of each species, you can use the Object Recognition system. One of them uses the popular CNN algorithm. The dataset was obtained from open sources totaling 8,992 datasets from 9 Agapornis species. It consists of 80% training images and 20% testing images from several datasets. After 10 accuracy tests, the results stated that the accuracy rate reached 89%. In addition, there are also extraction features extracted from images including color, shape, size, and texture characteristics. The things extracted in this study include the Mean, Standard Deviation, Kurtosis, Skewness, Variance, Entropy Value, Maximum Pixel, and Minimum Pixel. 

Page 28 of 32 | Total Record : 318

 26   27   28   29   30 

Filter by Year

2011 2025


Reset
Filter By Issues
All Issue Vol 21, No 1 (2025): June 2025 Vol 20, No 2 (2024): Available Online in November 2024 Vol 20, No 1 (2024): Available Online in June 2024 Vol 19, No 2 (2023): AVAILABLE ONLINE IN NOVEMBER 2023 Vol 19, No 1 (2023): Available Online in June 2023 Vol 18, No 2 (2022): Available Online in November 2022 Vol 18, No 1 (2022): Available Online in June 2022 Vol 17, No 2 (2021): Available Online in November 2021 Vol 17, No 1 (2021): Available Online in June 2021 Vol 16, No 2 (2020): Edisi November 2020 Vol 16, No 1 (2020): Edisi Juni 2020 Vol 15, No 2 (2019): Edisi November 2019 Vol 15, No 1 (2019): Edisi Juni 2019 Vol 14, No 2 (2018): Edisi November 2018 Vol 14, No 1 (2018): Edisi Juni 2018 Vol 13, No 2 (2017): Edisi November 2017 Vol 13, No 1 (2017): Edisi Juni 2017 Vol 12, No 2 (2016): Edisi November 2016 Vol 12, No 1 (2016): Edisi Juni 2016 Vol 11, No 2 (2015): Edisi November 2015 Vol 11, No 1 (2015): Edisi Juni 2015 Vol 10, No 2 (2014): Edisi November 2014 Vol 10, No 1 (2014): Edisi Juni 2014 Vol 8, No 2 (2012): Edisi November 2012 Vol 8, No 1 (2012): Edisi Juni 2012 Vol 7, No 2 (2011): Edisi November 2011 Vol 7, No 1 (2011): Edisi Juni 2011 More Issue