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Jurnal Teknik
Published by Universitas Negeri Gorontalo
ISSN : 16936191     EISSN : 27157660     DOI : https://doi.org/10.37031/jt
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik (JT) is a peer-reviewed journal published by Faculty of Engineering, State University of Gorontalo. JT is published two times annually, in June and December. JT provides a place for academics, researchers, and practitioners to publish scientific articles. The scope of the articles listed in this journal is related to various topics such as Civil Engineering, Electrical Engineering, Informatics Engineering, Craft Engineering, Architecture, Industrial Engineering, Mechanical Engineering, Engineering Education, and other related engineering fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 81 Documents
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Penataan Hunian Kawasan Bantaran Sungai Bone Kota Gorontalo Andika Ali; Sri Sutarni Arifin; Elvie F. Mokodongan
Jurnal Teknik Vol 16 No 1 (2018): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2367.84 KB) | DOI: 10.37031/jt.v16i1.52

Abstract

Kota akan selalu mengalami perkembangan dari tahun ke tahun, baik secara fisik maupun non fisik. Perkembangan kota selalu dihadapkan dengan permasalahan-permasalahan yang terjadi dilingkungannya, seperti yang terjadi di bantaran sungai biasanya identik dengan sampah, kotor, dan kawasan kumuh. Gambaran ini ada benarnya jika kita melongok kawasan bantaran sungai di tengah kota dan sekitarnya. . Problematika ini hampir ada di setiap kota-kota besar di Indonesia dan tidak kurang upaya pemerintah menata kawasan ini agar menjadi lingkungan yang bersih dan nyaman, masyarakatpun sebenarnya menginginkan hal yang sama. Rumah adalah bagian yang utuh dari permukiman, dan bukan hasil fisik sekali jadi semata, melainkan merupakan suatu proses yang terus berkembang dan terkait dengan mobilitas sosial ekonomi penghuninya dalam suatu kurun waktu. Yang terpenting dan rumah adalah dampak terhadap penghuni, bukan wujud atau standar fisiknya. Selanjutnya dikatakan bahwa interaksi antara rumah dan penghuni adalah apa yang diberikan rumah kepada penghuni serta apa yang dilakukan penghuni terhadap rumah. Kawasan adalah suatu daerah di permukaan bumi yang relative homogeny dan berbeda disekelilingnya berdasarkan kriteria tertentu, definisi dan deskripsi tentang kawasan menjadi perhatian utama para ahli demografi pada pertengahan abad ke-20. Dalam mengelola kawasan Tepian Air, beberapa elemen dapat diberikan penekanan dalam memberikan solusi desain yang spesifik, yang membedakan dengan olahan kawasan lainnya atau yang dapat memberikan kesan mendalam, sehingga selalu dikenang oleh pengunjung. Secara arsitektur, bangunan permukiman tepi sungai dibedakan menjadi bangunan di atas tanah, bangunan panggung di darat, bangunan panggung di atas air, bangunan rakit di atas air. Arsitektural bangunan dibuat dengan kaidah tradisional maupun modern, sesuai dengan latar belakang budaya dan suku/etnis masing-masing. Tipologi bangunan menggunakan struktur dan konstruksi sederhana, tradisional dan konvensional, yang kurang memperhitungkan pengaruh angin.
Pengaruh Variasi Diameter Elektroda E7018 Terhadap Kekuatan Tarik, Kekerasan, dan Struktur Mikro Pengelasan pada Baja Karbon Rendah Jenis SS400 dengan Metode SMAW Rizal Abdul Azis; Suharno Suharno; Herman Saputro
Jurnal Teknik Vol 17 No 2 (2019): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1377.554 KB) | DOI: 10.37031/jt.v17i2.53

Abstract

Metal welding by the welding method has weaknesses including the decrease in strength of the material and the results of residual stress, as well as the presence of cracks due to the welding process. The purpose of this research is to know the effect of variations in the diameter of the electrode E7018 to tensile strength, hardness, and microstructure on alloysteel SS400 before (raw material) and after welding using welding methodes Shileded Metal Arc Welding (SMAW) methode. This research uses experimental methode. Technique of data analysis used is the comparative descriptive. Based on the results of the reseach, it can be conclude that the result of the micro structure test showed an inrease perlit structure after welding. On raw material, ferrit structure looks prevalent but on welding result using SMAW welding methods with the variation in the diameter of the electrode 2.6 mm, 3.2 mm, and 4.0 mm showed that the ferrit decreases on each specimen, so the perlite structure is very dominating. Value of tensile strength on the welding result showed a difference in tension and strain. Specimen with a diameter of electrode 4.0 mm have a higher tension level and strain is 471.11 MPa and 24.98% if compared to the electrode diameter 3.2 mm specimen is 470.15 MPa and 24.81%, and the electrode diameter 2.6 mm is 462.42 MPa and 20.57%. This research shows that the welding using diameter variation of electrode changed value of the tensile strength, micro structure and effected on the value of hardness alloy Steel SS400.
Esterifikasi dan Transesterifikasi Stearin Sawit untuk Pembuatan Biodiesel Nita Suleman; Abas; Mardjan Paputungan
Jurnal Teknik Vol 17 No 1 (2019): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1110.571 KB) | DOI: 10.37031/jt.v17i1.54

Abstract

Penelitian ini bertujuan mellihat kualitas biodiesel yang dihasilkan dari Stearin sawit. Proses pembuatan biodiesel dilakukan dengan dua tahap yakni esterifikasi dan transesterifikasi. Pada tahap esterifikasi digunakan katalis asam H2SO4 dan pelarut metanol. Kemudian pada tahap transesterifikasi digunakan katalis KOH dan pelarut metanol dengan variasi katalis 1, 2, 3, 4 dan 5% (b/v). Hasil menunjukkan pada tahap esterifikasi kandungan asam lemak bebas (FFA) berkurang dari 2,85% menjadi 0,56% pada suhu 600C. Pada tahap transesterifikasi dihasilkan % yield tertinggi pada variasi persen katalis 1% (b/v) sebesar 75,74% Berasarkan hasil uji kualias biodiesel yang terdiri dari uji densitas, viskositas, bilangan iod, bilangan penyabunan, angka setana, titik kabut, dan bilangan asam telah memenuhi standar mutu biodiesel yang telah ditetapkan pada SNI-04-7182-2006.
Monitor Kualitas Udara Berbasis Web Menggunakan Raspberry Pi dan Modul Wemos D1 Frenki Tahir; Wrastawa Ridwan; Iskandar Zulkarnain Nasibu
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.722 KB) | DOI: 10.37031/jt.v18i1.57

Abstract

Air pollutant is a physical, chemical, and biological substance that can endanger the health and can cause disease in living beings. Therefore, knowledge about air quality is very important. This research aims to implement a wireless sensor network for monitoring air quality, from three different location points which are presented in the form of a website. The communication used between the client and server is the Webscoket.io communication protocol, to reduce network latency. In addition, the communication protocol works in real-time because not only the client can send a request to the server, but also can receive a response without having to send a request first. The research method used is the experimental method, which is divided into two stages namely hardware design stage and server software, microcontroller and user client design stage. The results obtained are prototyping tools used to implement wireless sensor networks for monitoring air quality using Raspberry Pi as a server and Arduino ESP-8266 as a microcontroller module. The tools have performed well as intended. In the trial, a reading of gas (CO2 and CO) sensors, temperature and humidity at the location being tested were successfully displayed on the website.
Pengaruh Keberadaan Bandar Udara Kelas III Seko Luwu Utara Terhadap Index Pencemaran Air M.Ichsan Ali; Muh. Rais Abidin
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.962 KB) | DOI: 10.37031/jt.v18i1.58

Abstract

The airport is one of the best transportation systems capable of moving people quickly as fast economic growth is followed by rapid population growth. Also, rapid population growth leads to massive exploitation of natural resources which causes environmental degradation such as illegal logging. Seko Airport, located in North Luwu is indicated to have caused environmental pollution, especially in watersheds. Therefore, this study aims to identify water pollution through physical and chemical parameters. Data were analyzed using the pollution index method to find the index value. The results showed that the waters around Seko Airport had an index value of 0.78 which was categorized as not polluted. This happens because the airport has a good water treatment system. Besides, there are strict regulations and guidance for all visitors and the local community to not throw rubbish into water bodies.
Komparasi Performa Insulasi Termal Antara Dinding Batu Bata dan Batu Bata dengan Penambahan Insulasi Alang-Alang Niniek Pratiwi; Baharuddin Hamzah; Rosady Mulyadi
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (504.618 KB) | DOI: 10.37031/jt.v18i1.60

Abstract

Buildings consume about 40% of the world's energy, beginning from the process of making the building itself to how the building could meet human thermal comfort needs. In the past, reeds were often used in traditional buildings, but unfortunately these days the practice is being abandoned. Several studies have shown that weeds can reduce building temperatures. However, these studies research has not examined how reeds are used as insulation material along with bricks so the purpose of this study is to compare the thermal insulation performance between plain brick and brick wall with the addition of reed insulation. The method used in this research is to use Ecotect simulation. Based on the results of simulations carried out it is known that model 1, namely the plain brick wall, has an outside-inside temperature difference of -1.32917 ° C. This means that the average temperature inside is hotter than the outside temperature by 1.32917 ° C. Meanwhile in model 2, the brick wall with the addition of reeds insulation has an outside-inside temperature difference of 0.445833 ° C. This means that the average temperature inside is cooler than the outside temperature by 0.445833 ° C. Therefore, it can be concluded that reeds could be used as thermal insulation material because it could store heat better than the material in Model 1, which is a plain brick wall.
Analisis Beban Kerja Mental Pada Mekanik Menggunakan Metode SWAT dan Metode QNBM Yolanda Lapai; Idham Halid Lahay; Fentje Abdul Rauf
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.834 KB) | DOI: 10.37031/jt.v18i1.61

Abstract

Mental workload is the difference between the demands of a task workload with the maximum capacity of a person's mental capability in a motivated state. The purpose of this study was to determine the level of the mental burden of mechanics using the SWAT and QNBM methods. The results of the Subjective Workload Assessment Technique method for heavy service workload showed that the mechanics were 56.6% burdened. Mental workload dimensions for mechanics 1 and 3 are effort load, for mechanic 2 is time load. The category for light service is 11.11%, unburdened in the time load dimension for all mechanics. Nordic Body Map Questionnaire Method was 67%, with illness category included.
Rancang Bangun Inverter Mini 1.5 Vdc to 220 Vac Untuk Lampu Darurat Syahrir Abdussamad
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (356.831 KB) | DOI: 10.37031/jt.v18i1.65

Abstract

Used cellphone charger components are used as an alternative to create emergency lights which can later be used by the community when the power source from the grid goes out. The purpose of this study is to utilize the components of a used cellphone charger which is the Joule Thief transformer to create 1.5 Vdc to 220V ac mini inverter. The method used in this study is the experimental method, which starts from the selection of tools and materials to measuring the outputs. The results showed that the design of a 1.5 Vdc to 220 Vac mini inverter with Joule Thief can turn on 220 Vac LED lights without drivers. Tests were carried out on 1 watt driverless 220 Vac LED lights. Experiments were carried out to test the dc source durability in the form of 1.5 Vac battery. From testing for LED lights 1, 2 and 3 it turns out that the current and voltage gradually decreased due to the use of LED lights. The resources quickly ran out when the inverter was used for 3 LED lights. The design of tools can be used as an emergency light when the source of electricity from the grid.
Observasi Gaya Kepemimpinan Terhadap Kinerja Pekerja Pada Proyek Preservasi Rekonstruksi Jalan Surabaya-Gresik-Sadang Totok Dwi Sutanto; Sugeng Dwi Hartantyo
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.324 KB) | DOI: 10.37031/jt.v18i1.67

Abstract

Leadership style within the company or in the project location greatly influences the work progress. The use of improper leadership style would influence the execution of the project, which would have a negative impact on the success of the project. This study aims to determine the influence of leadership style by using several indicators of leadership style, namely traits, temperament, habits, character and personality. The analytical method used in this study is the validity test, reliability test, determination test (R) and t-test. The data was obtained using questionnaires distributed at the research location. The results of the study indicated that the validity test and the reliability test was shown to be valid and reliable, an error rate of 95% or 0.05 resulted in the determination test results, which produced 88% of the variable variation in employee performance which can be explained by leadership style variables. While the t-test yielded the results of X1 = 2,71, X2 = 3,230, X3 = 4,278, X4 = 7,217 and X5 = 3,253, all of which are significant. Based on the results of the test, it can be interpreted that the leadership style has a significant and positive influence on performance.
Studi Kelayakan Investasi Perumahan Menggunakan Metode Benefit Cost Ratio Imam Sururi; Hammam Rofiqi Agustapraja
Jurnal Teknik Vol 18 No 1 (2020): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (186.078 KB) | DOI: 10.37031/jt.v18i1.68

Abstract

Investment is the association of a financial source in a long period to generate profits in the future/future. Housing is a group of houses that are either narrow or broad that functions as a residential or residential environment for the people who occupy it. The problem statement is to find out whether the house type 30/60 in the Lamongan Regency Insani housing is worth investing in when viewed from a financial perspective. The purpose of this study was to determine the feasibility of Insani Regency Lamongan housing investment. The method used to analyze the investment feasibility is the Benefit-Cost Ratio. Based on the results of this research, the Lamongan Regency Insani Housing showed that it was feasible because it produced a Benefit-Cost Ratio of 1,307.

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