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G-Tech : Jurnal Teknologi Terapan
Published by Universitas Islam Raden Rahmat Malang
ISSN : 25808737     EISSN : 2623064X     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering
Jurnal G-Tech bertujuan untuk mempublikasikan hasil penelitian asli dan review hasil penelitian tentang teknologi dan terapan pada ruang lingkup keteknikan meliputi teknik mesin, teknik elektro, teknik informatika, sistem informasi, agroteknologi, dll.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 897 Documents
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Penerapan Metode Pembelajaran Demonstrasi Animasi 3d Pada Mata Pelajaran Konstruksi Utilitas Gedung Menggunakan Software SketchUp Ahmad Yudi Mubarroq; Muhammad Aris Ichwanto; Akhmad Sokhe
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5471

Abstract

This research was conducted at SMKN 1 Ngasem, Kediri Regency. The research focused on the Building Modeling and Information Design (DPIB) department, especially in the building utility construction map. Students are quite difficult in understanding and recognizing the parts of the building and their functions, because the previous learning is considered less effective because it relies on the lecture method. The purpose of this study was to analyze student learning outcomes before and after being given treatment using the 3d animation demonstration learning method using SketchUp software. The research method used by researchers in this study uses a quantitative approach by applying a Quasi-experiment design: One-Group Pretest-Postest was conducted on one class with 36 students. Data analysis was carried out by comparing the average pre-test and post-test scores using the paired sample t-test test. The results of the analysis showed a significant increase with a significance value of <0.001 (Sig <0.05), indicating that the use of the demonstration learning method is effective in improving student understanding.
Analisa Pengaruh Arus Bocor Terhadap Total Harmonic Distortion Pada Isolator 150 kV Yang Terkontaminan Lumut Menggunakan Transformasi Fourier Rachmat Deska Saputra; Sitti Amalia; Yusreni Warmi; Sepannur Bandri; Andi M Nur Putra
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5476

Abstract

This study investigates the Total Harmonic Distortion (THD) of 150 kV insulators contaminated with moss based on leakage current patterns with three variations of test voltages, namely 10,578 V, 21,063 V, dan 30,569 V. The tests were conducted experimentally at the High Voltage Laboratory of Gajah Mada University with a temperature of 28.2 °C dan humidity of 57.8%. The test was conducted experimentally at the High Voltage Laboratory of Gajah Mada University with a temperature of 28.2°C dan humidity of 57.8%. The analyzed parameters include waveform, frequency spectrum (FFT), dan THD, which were calculated using Fast Fourier Transform (FFT) through NI DIAdem software. The test results showed no strong relationship between leakage current dan THD. At a leakage current of 0.103 mA, the resulting THD is 21.84%, while at a current of 0.207 mA produces a THD of 18.27%, dan 0.306 mA produces a THD of 36%. Based on the IEEE STD 519-2014 stdanard, THD on 150 kV insulators contaminated with moss exceeds the maximum limit of 15%, so this insulator is not safe to use on the Koto Panjang-Payakumbuh transmission line.
Pengaruh Variasi Suhu Tempering Pada Struktur Makro Material Untuk Pengelasan Material Bekas (Used Material) Dengan Material Baru Taufan Prasetyo; Ach. Choseiri; Aurista Miftahatul Ilmah
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5479

Abstract

Annual survey is a periodic inspection process conducted once a year on ongoing ships, aimed at checking the possibility of damage to the hull of the ship. If during the annual survey process damage is found on the plates, especially the hull plates of the ship, then the plates need to be replaced. Plate replacement means removing part of the damaged plate to replace it with a new plate through cutting and welding processes. And in the welding process, there is a joining process between the new plate and the old (used) plate where both materials have different microstructures and characteristics. In this study, a heat treatment process (Pre Heat) was carried out before welding using the tempering method on the old plate with the aim of improving the microstructure and material characteristics. The tempering process was carried out using three temperature variations, namely 200°C, 300°C, and 400°C. From the test results, it was found that the suitable temperature was 200°C, which showed no defects and had the smallest average HAZ width of 1.35mm compared to 300°C, 400°C, and non-heat treatment.
Analisis Transformasi Hujan-Debit dengan Metode Hidrograf Satuan Sintetik untuk Penetapan Banjir Rancangan pada DAS Manggar Kecil Namiratus Syarifah; Vita Ayu Kusuma Dewi; Gilang Id'fi
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5491

Abstract

To control flooding in Manggar Kecil watershed, it’s required to design the Flood Control Building (Bendali). This is aligned with the Balikpapan City government program, but there is limitation of flood discharge data in Manggar Kecil river included in the main parameter for bendali planning. To solve the limitation discharge data, transformation analysis of rainfall data to discharge (rainfall-runoff) can be conducted to obtain the value flood discharge. Analysis could using synthetic unit hydrograph methods. Quantitative descriptive is applied in this research and data collection from secondary data. Results of data analysis for return periods 10 to100 years include the Nakayasu method in the range of 167.02 to 212.92 m³/second, the Synder-Alexeyev method in the range of 123.31 to 157.19 m³/second and the Limantara method in the range of 202.01 to 257.53 m³/second. The determination of design flood value uses maximum discharge value of Limantara method.
Optimasi Drainase Jalan Soekarno Hatta-Borobudur Kota Malang Sebagai Alternatif Penanganan Masalah Limpasan Permukaan Putu Sirli Oktaviani; Vita Ayu Kusuma Dewi; Cynthia Permata Dewi
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5496

Abstract

Rapid urban development has a negative side because development does not pay attention to the carrying capacity of the environment. Land that should function as protected areas and green open spaces is decreasing, thus impacting water catchment areas. Soekarno Hatta-Borobudur Street is one of the annual surface runoff puddles in Malang City up to 20 cm high for almost 40 minutes. This is due to the inability of existing channels to withstand rain discharge and the lack of water catchment areas. The purpose of this study is to overcome the problem of puddles by utilizing alternative solutions of eco-drainage biopore infiltration holes (BIH) and infiltration wells so that rainwater runoff from buildings does not directly flow into drainage channels. The results of the analysis of planned rainfall for a 10-year return period obtained a rainfall intensity of 126.986 mm. There are 22 channels that are unable to accommodate excess flow discharge. It is known that the number of each alternative needed to overcome this problem is 57,060 LRBs and 429 infiltration wells.
Potensi Sampah Organik TPS 3R Menjadi Biogas dan Pupuk (Studi Kasus: TPS 3R Kasih, Kabupaten Bantul, Daerah Istimewa Yogyakarta) Titi Tiara Anasstasia; Oktavia Dewi Alfiani; Ayu Utami; Layla Azzahra Ari
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5503

Abstract

The generation of organic waste at TPS 3R Kasih increased and dominated but its separation has not been carried out optimally. The purpose of this study was to determine the chemical characteristics of organic waste and analyze the potential for biogas that can be produced from organic waste anaerobically. The research method included sample collection using the purposive sampling method, surveys, and laboratory experiments using a batch or closed anaerobic reactor without any reactant movement to determine the potential for methane formation during 40 days of processing. The chemical characteristics of the slurry before and after processing were analyzed to determine its potential use after biogas formation as compost. The results showed that the slurry content before and after processing did not meet the fertilizer quality standards. Methane gas was formed starting on the 35th day in both reactors 1 and 2 with the highest concentration achieved at 1.2% of a mixture of organic waste, water, animal waste and EM4 with an optimum time of 40 days.
Pengembangan Makanan Tradisional Apem Kesesi Menggunakan Metode Quality Function Deployment (QFD) dan Konsep Green Product Sebagai Upaya Meningkatkan Kualitas Produk Beta Arya Ash Shidik; Yohandika Tri Apriliyanto; Vidya Renatha Sari
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5504

Abstract

Apem kesesi is a traditional wet cake food in Pekalongan district. Apem kesesi cake has the problem of not being long-lasting, the packaging and appearance of the product is less attractive, less hygienic, impractical and the taste is not suitable for the younger generation. Therefore, it is necessary to develop apem kesesi products according to needs to improve product quality. Apem kesesi product development uses the quality faction deployment (QFD) method and the green product concept. Based on survey results, consumers want apem kesesi products that are hygienic, practical, unique, have attractive packaging and are durable. The main ingredient for making apem cake is rice flour. Add tapioca flour to give the apem cake a chewy texture, palm sugar to produce a distinctive taste and aroma, then vanilla to strengthen the taste, and sodium benzoate as a preservative. The product packaging design consists of primary packaging and secondary packaging. Based on validation tests and different tests, the results showed that the product design developed met consumer needs and was better than existing products.
Identifikasi Potensi Air Tanah Menggunakan Metode Geolistrik di Dusun Krisik Desa Kemiri Kecamatan Jabung Kabupaten Malang Nafi'atus Sholikhah; Vita Ayu Kusuma Dewi; Titi Rahayuningsih
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5506

Abstract

Along with increasing human growth and activity, the need for clean water also continues to increase. Kemiri Village, Jabung Subdistrict, Malang often experiences clean water difficulties for daily needs, especially during the dry season. This study aims to determine the location of aquifers and potential groundwater discharge in Krisik Hamlet. The research method uses the Schlumberger Configuration Geoelectric Method and data analysis using IPI2WIN Software which is then smoothed using Progress 3 Software to identify aquifers and groundwater potential. Data acquisition was carried out on a 100-meter stretch of AB with 3 sounding points. Groundwater potential of the study area can be found at depths ranging from 0.04 - 44.71 meters bmt. The thickness of the aquifer layer ranges from 6.51 - 40.49 meters in the form of sandstone with resistivity values ranging from 164.69 - 248.84 Ωm. The type of aquifer found in the study area is unconfined aquifer in locations 1 and 2 and floating aquifer in location 3.
Karakteristik Petrologi Batuan Daerah Banturung Kecamatan Bukit Batu Kota Palangka Raya I Putu Putrawiyanta; Novalisae Novalisae; Noveriady Noveriady; Neny Fidayanti; Irga Loti Rante; Hendrik Brianto
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5508

Abstract

The Banturung area, a sub-district in Bukit Batu District, Palangka Raya City, mostly consists of rocky hill morphology. This research aims to determine the characteristics of rocks in the Banturung area based on petrological analysis and direct observation of rock outcrops at the research location. Characteristics can be determined by direct field observation or by macroscopic observation, where what is observed are physical properties including color, structure, texture, mineral composition and also the formation process. From the results of the analysis it is known that the characteristics of the rocks at the research location include igneous rock types and there are several mineral compositions with an average percentage of quartz 52.5%, plagioclase 21.3%, mica 8.6%, biotite 5%, hornblende 11, 3% and 1.3% pyrite mineral.
Identifikasi Kandungan Unsur Mineral Pada Area Bekas Tambang Emas Placer Dengan Metode X-Ray Fluorescence Ferdinandus Ferdinandus; I Putu Putrawiyanta; Novalisae; Noveriady Noveriady; Immanuel Nababan; Matius Yosefhin
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5604

Abstract

The lack of knowledge and technology in small-scale community gold mining means that many concentrations of other valuable mineral elements cannot be identified and retrieved. This research aims to determine the remaining elemental content in former small-scale community gold mining areas. The research method is by taking leftover mining material at the research location and then preparing and analyzing it using the X-ray Fluorescence (XRF) method. The research results from the 9 sample points taken showed that the concentrations of the elements Si (Silica) and Fe (Iron) were the most dominant with an average value of Silica (Si) 85% and Iron (Fe) 7.37%. It can be concluded that at the research location there are still other mineral elements of economic value besides gold that are not mined and utilized.

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