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Dr. Ratih Kumalasari, S.Pd., M.Si.
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Jalan Raya Perjuangan No. 81, Kel Marga Mulya, Bekasi Utara, Kota Bekasi, Jawa Barat, Indonesia
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INDONESIA
Jurnal Jaring SainTek
Published by Universitas Bhayangkara Jakarta Raya
ISSN : -     EISSN : 26569485     DOI : https://doi.org/10.31599/jaring-saintek.v2i2.323
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering
Jurnal Jaring SainTek (JJST) merupakan merupakan jurnal ilmiah yang diterbitkan oleh Lembaga Penelitian, Pengabdian Masyarakat, dan Publikasi (LPPMP) Universitas Bhayangkara Jakarta Raya dan dikelola oleh Fakultas Teknik Universitas Bhayangkara Jakarta Raya. Jurnal Jaring SainTek (JJST) ini merupakan kumpulan artikel – artikel ilmiah dari hasil penelitian, ulasan ilmiah, serta kajian berkaitan dengan disiplin ilmu teknologi industri, kimia, perminyakan, lingkungan, dan informatika yang menjadi obyek kajian pada umumnya. Jurnal ini diterbitkan dua kali setahun (semester genap terbit April dan semester ganjil terbit Oktober). Pertama kali terbit bulan April 2019 dengan E-ISSN: 2656-9485.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 135 Documents
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HOLDING TIME PADA SIFAT FISIK PENGELASAN SMAW BAJA ASTM-A36 MELALUI UJI PENETRAN Wirajaya, Yoga Mangun
Jurnal Jaring SainTek Vol. 3 No. 2 (2021): Oktober 2021
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/khc2jj97

Abstract

In the industrialized world, low-carbon steel was often used as a construction material. One of the problems obtained in the low carbon steel welding process was its nature susceptible to shakes. The minimize the formation of residual voltage in the connection area (Heat Affected Zone) can be done by the Post Weld Heat Treatment (PWHT) process The purpose of this study was to find out the effect caused by variations in heat treatment on heating steel ASTM A36 (Holding Time) to penetrant tests and determine the suitable temperature given to ASTM A36 steel after the welding process. The PWHT process was carried out with several variations of Holding Time, namely 1 hour, 2 hours, and 3 hours at 400 °C. Based on penetrant testing showed that the best value in Holding Time was 3 hours with no appearance of porosity defects
STUDI PEMANFAATAN LIMBAH CO2 MENJADI CO2 CAIR DENGANTEKNOLOGI CO2 PURIFICATION DI INDUTRI BAJA Kartika, Wahyu
Jurnal Jaring SainTek Vol. 3 No. 2 (2021): Oktober 2021
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/vhfvst23

Abstract

Steel products are needed to support thedevelopment of the manufacturing industry andother strategic industries in Indonesia. Thesteel industry is one of the contributors to CO2 gas emissions, which contributes about 15percent of greenhouse gases (GHG). PT. XYZ,which is one of the largest steel industries inIndonesia, produces CO2 waste from thereduction process in the exhaust gas by anaverage of 20 tons/hour to produce its steel.This study aims to utilize CO2 waste in exhaustgas into liquid CO2 so that its utilization canreduce CO2 emissions to the environment.Waste minimization by PT. XYZ is by recyclingCO2 waste into liquid CO2 with CO2 Purification technology. Liquid CO2 is usefulin various industries such as the manufactureof carbonated beverages, food and beveragepreservation, and the welding industry. Wasteminimization has resulted in a 10% reductionin CO2 emissions by an average of 10%. Themagnitude of this decrease is influenced by thelimited production capacity and storage tankcapacity. The results of the study also showthat the variables that are considered for theuse of CO2 emissions are the purity of CO2,raw gas CO2.
OPTIMASI LAJU PRODUKSI DENGAN CARA DESAIN ULANG PROGRESSIVE CAVITY PUMP (PCP) PADA SUMUR “X” LAPANGAN “Y” Prastio, Eko; Rizky Agusman, Abdullah
Jurnal Jaring SainTek Vol. 3 No. 2 (2021): Oktober 2021
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/g00ct507

Abstract

Progressive Cavity Pump (PCP) has beenapplaid as artificial lift at X well that is ownedby PT Pertamina EP Asset 1 Field Jambi. Fromthe early calculation of current production gets17,16 bfpd that has not reached the target of48,57 bfpd. This indicates that PCP must beredesign. Before redisgn we used ProductivityIndex (PI) to make an Inflow PerformanceRelationship (IPR) curve that shows the oil isstill suitable production or not. We redisgn PCPusing R & M Energy Systems calculationmethods as the provider and found that theoptimal for revolution per minute (RPM), horsepower (HP), torque values and the drive headtype are 101,5 RPM, 2,7 HP, 15 ft-lbs and therehave to be a change in drive head type AA4. Toget results optimal production.
BIOREMEDIASI SEBAGAI ALTERNATIF PENGEMBALIAN FUNGSI TANAH YANG TERCEMAR MINYAK BUMI Zafira, zana
Jurnal Jaring SainTek Vol. 3 No. 2 (2021): Oktober 2021
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/qgf9re58

Abstract

Oil contamination from field drilling waste is aserious environmental problem worldwide.These oil contaminants must be removed tomaintain biodiversity and ecological balance.Bioremediation is a soil cleaning technique thatutilizes the metabolic ability of microorganismsto degrade soil contaminants. The use of nativebacteria producing biosurfactants andutilization of hydrocarbons increases theeffectiveness of bioremediation by makinghydrocarbons bioavailable for degradation.Determination of bioremediation microorganisms affects the degradationprocess of petroleum. This is because eachmicroorganism requires a specific substrate toreduce all the components of petroleum in thesoil. A deeper approach is needed to obtain theeffectiveness of microorganisms, bothnonindigenous and indigenous microorganismsthat are applied by researchers in degradingpetroleum. However, not all available journalsummaries provide a detailed explanation ofthe method and effectiveness of microorganisms in the bioremediation method.In this review, we will provide severalmicroorganisms and methods used inbioremediation, including adsorptive bioremediation, biopile, in-situ bioremediation,landfarming, biostimulation, and composting inorder to find the most effective method in thepetroleum bioremediation process.
SISTEM INFORMASI ANGGARAN PADA PT. ARDHI KARYA TEKNIK Rusmawan, Uus
Jurnal Jaring SainTek Vol. 3 No. 2 (2021): Oktober 2021
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/tfqp2t11

Abstract

PT. Ardhi Karya Teknik is a company engagedin construction, painting, cooling engineeringand information technology. This companyexperiences difficulties in managing finances,especially in terms of budget provision anduse, the concentration of problems revolvesaround the budget allocation for operationalcosts that are routinely issued every year andthe facts in the field regarding the use of thebudget. Therefore it is necessary to have abudget application that is able to manage andprovide accurate information about thecompany budget. The method used in thisresearch is waterfall. After the application ismade and implemented in the company, thebudget allocation process and reports on itsuse can be presented quickly and accuratelyand can help the parties involved in thecompany to make the necessary decisions.
Pemanfaatan Limbah Serat dari Pelepah Pisang sebagai Inovasi Bahan Komposit Laminasi Kapal Kayu Mu'aazar Habibie, Ahmad; Basuki widodo, Akhmad
Jurnal Jaring SainTek Vol. 4 No. 1 (2022): April 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/m7pxw490

Abstract

Fishing boats are vessels that almost 90% ofthe building materials are made of wood. Thenature of wood that is easily weathered andattacked by wood destroying organisms causesfishing vessels with wood materials to be easilydamaged. Banana trees are plants that thrivein Indonesia. In addition to the fruit, bananatree leaves are the part that is often used forreprocessing. However, the midrib of the treecannot be utilized optimally and will becomeunused waste. Therefore, the author has aninnovation using banana midrib fiber as acomposite material as a wood ship laminationmaterial. Therefore, researchers need to do atest, namely by tensile test of variations in fiberthickness of 1 layer, 2 layers, 3 layers on abanana midrib fiber composite and polyesterresin to measure the tensile strength value ofthe composite which refers to the ASTM 63802astandard.
Analisis Strategi Pengembangan Wisata Lontar Sewu menggunakan Metode SWOT Kurmidianata, Mujid; Suwasono, Bagio
Jurnal Jaring SainTek Vol. 4 No. 1 (2022): April 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/r6sh9r25

Abstract

This study aims to develop lake tourism by prioritizing of strenghts, weaknesses, opportunities and threats in the development of lake tourism located in Hendrosari Village, Gresik Regency. Which aims to optimize the potential that potential that exits in the lake to be used as a plate to find income because the tourism object is quite promising and the village community to developp and utilize these resources is very high. lake tour. In carrying out this development, the author will use several methods that will be used to determine the feasibility of developing lake tourism in hendrosari village, including the SWOT analysis method (Strenghts, Weaknesses, Opportunities and Threats).
Rancang Bangung Aplikasi Alumni Berbasis Web Studi Kasus pada SDN Bungur 03 Jakarta Pusat Ganda Wicaksono, Rizky; Ramos, Samuel; Galih Whendasmoro , Raditya
Jurnal Jaring SainTek Vol. 4 No. 1 (2022): April 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/4v7s6m81

Abstract

SDN Bungur 03 is a public elementary school in Jakarta, precisely in Central Jakarta, where there is a section that takes care of graduates or alumni of the school, namely administrators who are in charge of recording data on graduates or alumni of this school. The process has several problems, namely the data collection process for graduates or alumni who still use paper as an alumni data file, and in the data collection process alumni still have to come directly to the school to fill in the alumni data where the alumni are already busy with activities at school. campus or at work that does not allow alumni to fill in or update alumni data at school. In defining the needs and analysis and system design for the company, data collection methods are needed by means of literature study, observation, interviews, design, and testing. For the method of analysis and the concept of information systems, the unifeld modeling language (UML) model is used. The results of this thesis writing will build a web-based information system which is expected to be able to deal with the problems that exist on the school side and the alumni. This skill information system that is owned by every human being is made using the PHP programming language, MySQL database. With the alumni information system at Bungur 03 Elementary School, it can handle complaints experienced by the school and alumni in the running system process. For example, there is an alumni data collection report and an alumni data form in the form of forms, thereby reducing the use of paper on the forms and attached files.
Pemanfaatan Alga Coklat Sargassum sp pada Pembuatan Kemasan Air Mineral yang Dapat Dikonsumsi Rizqia, Nurfatia; Rahayu, Susanti; Thifalia Sahda3, Nabila; Sukreni, Tulus
Jurnal Jaring SainTek Vol. 4 No. 1 (2022): April 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/gt614377

Abstract

Bottled mineral water has become a daily necessity for Indonesians for its practicality. The raw material used in mineral water packaging is plastic because the price is cheaper, and the characteristics of it are strong and lightweight when compared to other polymers. However, the plastic waste produced is difficult to be decomposed by microorganisms in the soil, causing environmental pollution. There have been many researches on the production of environmentally friendly plastic packaging. One of the raw materials used is alginate because it contains ester compounds which are the required for making biodegradable plastics. The alginate compound contained in seaweed is a polysaccharide obtained from the extraction of brown seaweed such as Sargassum sp which is found in Indonesian waters. Gel formation can be done by diffusion with the spherification method. This method is the simplest technique, where the gel is formed by diffusion of calcium ions into the alginate solution. The results showed that sodium alginate derived from seaweed can be used as a raw material in the production of mineral water packaging that can be consumed by using the spherification techniques. The packaging product which is shaped like a bubble is safe for consumption and is biodegradable
Analisa Perencanaan Lumpur Pemboran Menggunakan HPWBM pada Sumur “E” Lapangan “P” Prastio, Eko
Jurnal Jaring SainTek Vol. 4 No. 1 (2022): April 2022
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/v9mnek61

Abstract

The “E” well to be drilled is a development well in the “P” field located in the North Sumatra Basin. During the drilling operation in well “E” using HPWBM, HPWBM is used to overcome shale instability. This water-based mud is used because it is cheaper and more economical than using oil-based mud. However, this mud needs to be added with other chemicals because HPWBM has a weakness in controlling shale formation. The mud system design for the “E” well uses the offset well method, which uses data from nearby wells for comparison. Well “E” is divided into two intervals. Hole interval 12 1/4" with 9 5/8" casing from 24 m to 290 m depth using HPWBM. Then proceed with 8 1/2" hole intervals with 7" casing from 290 m to 530 m depth using the same mud. The problem this well will face is pressure at a depth of 500 m, thus increasing the mud density from 12 ppg to 14 ppg to prevent kick.

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