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Sainteks: Jurnal Sain dan Teknik
Published by Universitas Insan Cendekia Mandiri
ISSN : -     EISSN : 26858304     DOI : https://doi.org/10.37577/sainteks.v5i2
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering
Sainteks is a scientific journal that publishes research papers encompassing all aspects of natural sciences, technology and engineering. This journal is published 2 (two) times a year (March and September) by the Faculty of Engineering UICM d/h UNBAR. The fields covered by the Sainteks Journal include: - Chemical Engineering - Textile Chemical Technology - Industrial Engineering - Science - Textile Industry Technology - Environment
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 161 Documents
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Implementation of the SAW and TOPSIS Methods as a Decision Support System in the Election of Outstanding TNI Members Niqotaini, Zatin; Vernanda, Dwi
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.695

Abstract

This research aims to apply the SAW and TOPSIS methods in the decision support system for the selection of outstanding members at the TNI Maritime Data Information Center. The selection of outstanding members is an important activity that aims to reward individual performance and improve the quality of human resources. In this study, the authors realize that the conventional method used in the selection of outstanding members requires significant time and cost. Therefore, the researcher seeks to apply the SAW and TOPSIS methods to achieve transparent, effective, and objective elections. Today's technological advances play an important role in various aspects of human life, including education, economics, business, and other organizations. Previous research has shown that the SAW and TOPSIS methods have given good results in the selection and ranking process. In this study, the author will use the SAW and TOPSIS methods to select outstanding members in the TNI Pusinformar. The results of previous studies showed that the SAW method had an accuracy of 45%, while the TOPSIS method had an accuracy of 60%. Therefore, this research is expected to contribute to improving the quality of TNI members and facilitating the process of selecting outstanding members. Decision support systems that use the SAW and TOPSIS methods can be an effective tool in selecting outstanding members based on predetermined criteria. It is hoped that the results of this study can provide more accurate and objective recommendations in the selection of outstanding members in the TNI Pusinformar.
Study of Measuring The Cover Factor of Woven Fabrics Using Image Processing Techniques Wijayono, Andrian; Murti, Wilda
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.709

Abstract

In this research, a method for measuring the cover factor of woven fabric using digital image processing techniques has been developed. The cover factor of woven fabric is measured by capturing a digital image of the fabric under examination using a digital microscope, converting the image into digital image information, storing this digital image information in digital memory, and performing digital image segmentation to determine the cover factor of the woven fabric. Cover factor measurements were conducted on seven samples of woven fabric with different densities. To validate the proposed method, the cover factor measurements obtained from image processing were compared with the theoretical cover factor obtained from the standard method. It was found that there was no significant difference between the results obtained from the conventional method and the proposed method (with a significance value of 0.95).
Knitting Fabric with Fractal Geometry: Fractal Theory Applied to Industry 4.0 Munandar, Taufik; Ihsan Ardiansyah, Muhammad; putra, valentinus galih vidia
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.772

Abstract

Knitted fabrics have complex and repetitive patterns, similar to fractal geometry, where fractal theory can be applied in industry 4.0 to optimize the design, production and analysis of complex and efficient textile structures.This study aims to reduce electromagnetic radiation using conductive knit fabrics patterned with fractal geometry and non-conductive knit fabrics with similar patterns. Tests included raw materials (yarn) and fabrics. The yarn was tested using FTIR and SEM, while the fabric was tested for anti-radiation reduction and aesthetics. Conductive yarns of stainless steel polyester filament were interlaced with acrylic yarn using the jacquard technique on a Stoll CMS 540 HP automatic flat knitting machine. The results showed that the conductive knit fabric patterned with fractal geometry was better at absorbing electromagnetic radiation than the non-conductive knit fabric. The radiation test was conducted with sources from smartphones and computer screens at a distance of 10 cm, 20 cm, and 30 cm, while the aesthetic test was conducted using a questionnaire. The novelty of this research lies in the application of fractal geometry motifs, which enhance the protective and aesthetic functions of the fabric, resulting in a functional textile with high visual appeal.
Preliminary study of chitin extraction from crickets (acheta domesticus) using deep eutectic solvent Nur Fadila, Salsabil Intan; Athirah, Febriana Azhar; Perdani, Meka Saima; Pambudi, Teguh; Umam, Hilman Imadul
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.774

Abstract

Pada penelitian ini telah dilakukan ekstraksi kitin dari Jangkrik Rumah (Acheta Domesticus) melalui green process menggunakan Deep Eutectic Solvent (DES). DES yang digunakan dibuat dari komposisi Choline Chloride:Citric Acid Monohydrate dengan perbandingan molar 1:2. Proses ekstraksi dilakukan dengan variasi waktu (2, 4, dan 6 jam) dan perbandingan bahan baku dengan pelarut (1:10, 1:15 dan 1:20). Jangkrik rumah memiliki kandungan protein sebesar 20–40%, lemak sebesar 25%, mineral seperti kalsium dan juga kitin. Penelitian ini mengeksplorasi potensi jangkrik rumah untuk menjadi bahan baku kitin. Tujuan dari penelitian ini adalah mengetahui pengaruh perbandingan bahan baku dengan jumlah pelarut dan waktu ekstraksi terhadap nilai rendemen dan derajat asetilasi serangga jangkrik rumah. Hasil penelitian ini menunjukkan kandungan rendemen kitin pada sembilan sampel sekitar 45% hingga 94% dan DA pada bilangan gelombang 1560 cm-1 dan 2875 cm-1 sekitar 68.17% hingga 957.70%, hal ini dikarenakan masih terdapat sisa DES, protein yang ditunjukkan pada FTIR pita gelombang 1540 cm−1 dan kandungan mineral yang ditunjukkan pada peregangan O-H dan NH di pita 3450 cm-1 dan 3270 cm-1 sampel kitin. Pengaruh perbandingan bahan baku dengan pelarut dan waktu ekstraksi juga dapat mempengaruhi nilai DA dan rendemen. Namun hasil optimum DA yang diambil pada bilangan gelombang 1560 cm-1 dan 2875 cm-1 yaitu pada sampel JRC 215 sebesar 68.17% dan rendemen kitin pada sampel JRC 410 dengan presentase rendemen 45.50%.
Financial Feasibility Analysis of Copper Cathode Factory at PT. X in Central Kalimantan Bahri, Saeful; Oetomo, Dedy Setyo; Hermawan, Asep
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.778

Abstract

Indonesia has a lot of promising mineral wealth, one of which is copper, but its processing into cathodes is still minimal while domestic demand is not yet sufficient. In accordance with the strategic downstream investment plan for mineral commodities, especially copper, which has been included in the state downstream document, it requires a comprehensive financial feasibility document, especially for PT. X. The analysis in this research uses a reference capacity of 25,000 tons of cathode. This research aims to determine the technical factors in building a copper cathode factory, determine the amount of investment required in the form of CAPEX and OPEX, and determine its financial feasibility. The method used in financial feasibility analysis at PT. This X is Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (PP). Based on the research results, it was found that the total CAPEX (Capital Expenditure) costs that had to be incurred were $ 330,589,628 and the total OPEX (Operational Expenditure) costs that had to be spent was $ 312,257,456 with an NPV value of $ 27,505,439, an IRR value of $ 27,505,439. 15.1%, and PP value for 6 years 10 months. Therefore, the project to build a copper cathode factory at PT. X is worth continuing.
Strategies for Improving Occupational Safety in the ATBM Weaving Industry Rahmawati, Nurmalinda; Heikal, Jerry
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.780

Abstract

Occupational safety is a crucial aspect of the manufacturing industry, especially in the weaving industry that uses shuttle machines. This study aims to identify risks and develop strategies to prevent occupational accidents in the shuttle weaving industry. The methods used include job safety analysis (JSA) and strategy formation using the IFAS and EFAS matrix to formulate the necessary solutions. The results revealed that seven types of jobs were identified as having 23 potential risks of occupational accidents. The highest risk was found in the shuttle weaving process, where the activities involved have the potential to cause physical injuries such as permanent disability due to being targeted by the weft binoculars during production. The proposed strategies include improving weaknesses by capitalising on existing strengths, implementing new technologies and safety policies to address threats, and improving compliance and incident response to reduce risks. This research is expected to contribute as a reference for the weaving industry with shuttle machines in conducting risk analysis and implementing occupational accident prevention measures.
Martin Fishbein's Multiattribute Analysis on Using The Pegadaian Digital Service PT Pegadaian Indonesian Pawnshop Avrianto, Alam; Murwenie, Ira
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.783

Abstract

The objective of this investigation is to assess the level of client trust and the attitude of PT. Pegadaian Indonesia toward the Pegadaian Digital Services (PDS) Application. The PDS Application is an internet-based pawn service application that was launched by PT. Pegadaian Indonesia in 2021. This study is a quantitative research study that aims to gather data from a specific group of clients of PT. Pegadaian Indonesia KCU Gegerkalong - Bandung. The data collection will be done using deliberate random sampling procedures. The analytical methodology utilized is the Martin Fishbein multi-attribute analysis model, implemented through the utilization of Ms Excel software version 13. The findings of this research will be advantageous in assessing the degree of perception and level of confidence that consumers of PT. Pegadaian Indonesia have in the utilization of the PDS Application. This application has been offered by PT. Pegadaian Indonesia to facilitate its online gold collateral and loan services.
Physical and Mental Workload Measurement on Warehouse Division Operators of PT.X Using Objective Workload and Subjectives Workload Assessment Sufyan, Agi Agus Setiawan; Mulyana, Yayan; Kusumadewi, Afriani; Santang, Ilham Eka
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i2.786

Abstract

PT. X is one of the companies engaged in the Flavors and Fragrances. The role of employees as resources in work activities in the Warehouse Department is very important for the sustainability of work because almost all activities use human power, from receiving and storing, picking, packaging to loading, many still use human power and the most frequently done is the process of lifting and moving both raw materials and finished goods. The loads lifted are also diverse and in quite large quantities. Based on the results of interviews with operators, information was obtained that soreness in the waist, back and hands occurred as a result of poor work attitudes and heavy lifting loads. There are also psychological complaints experienced by the Warehouse Division due to the demands of work targets that are felt to be less relevant in each shift, causing stress and mental pressure that can affect performance and work results that are less than optimal. To determine the magnitude of the physical and mental workload of employees in the Warehouse Division, measurements were carried out using the hear rate reserve (%HR reserve) method and NASA-TLX (National Aeronautics and Space Administration Task Load Index) to see the physical and mental workload. From the measurement results, it is shown that the physical workload experienced is in the light and moderate categories ranging from 1% -43.5%, while for the mental load that has a high impact ranging from Weighted Workload (WWL).
Application of Wonosobo Sheep Fleece as a Material of Filler Jacket Mustafa, Dody; Somantri, Karlina; Oktariani, Eka; Saifurohman, Saifurohman
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.787

Abstract

The use of ducks down to serve as a filler in recent years has increased. In 2015, in Canada, the well-known jacket Company Canada Goose, which uses down as a filler, became very popular, even in 2016 its sales in the US grew by 50%. But the use of down is opposed by many parties including animal welfare groups (animal welfare) who campaign “save the duck” because the use of down is considered to hurt animals. Down is taken or uprooted from living birds without being given painkillers. Some companies then implement policies to ensure that the down used does not come from raw materials that hurt poultry. However, concerns about this still arise, because consumers will not be able to ascertain whether the down-fill jacket used is from Fluff plucked from living birds or not. In previous research, Wonosobo fleece has a thermal conductivity value of 0.03 W/moK, while the thermal conductivity of poultry fleece ranges from 0.024 – 0.03 W / moK. This shows that this fleece fiber has the potential to be used as an alternative raw material for jacket filler. In addition, Wonosobo sheep fur also comes from environmentally friendly materials, the process of epilation is done without hurting the sheep itself, it is the process of epilation of sheep have a positive impact on sheep, such as eradicating fleas on sheep fur. Based on the down issue and the potential of Wonosobo fleece to be used as a jacket filler, it is necessary to innovate the manufacture of multilayer jacket material made from fleece. Keywords: Dombos Fleece, Filler and Jacket
Production of Transparent Solid Antibacterial Soap from Palm Oil Using Eco-Enzyme Murdikaningrum, Galu; Ramadhan, Adisti; Astari, IIs Ananda; Ningtyas, Rani Pramudyo; Hutagalung, Johannes Martua
Sainteks: Jurnal Sain dan Teknik Vol 6 No 2 (2024): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i02.792

Abstract

Abstract: Hygiene is essential in daily life, and soap is vital for effectively cleansing contaminants and bacteria from the skin. Recent innovations in soap-making, including the development of transparent soaps, aim to enhance both functionality and aesthetic appeal. This study explores the incorporation of eco-enzyme, derived from the fermentation of kitchen waste such as fruits, vegetables, sugar, and water, into transparent antibacterial soap. Eco-enzyme contains lipase, trypsin, and amylase, which are effective in inhibiting pathogenic bacteria. The adoption of eco-enzyme not only enhances the sustainability of soap production but also promotes the efficient use of organic waste. This research conducted a laboratory-based experimental investigation to evaluate the effectiveness of eco-enzyme in the production of transparent solid antibacterial soap using palm oil. The process involved several stages: preparation of raw materials, soap production, and subsequent analysis. The results demonstrated that the soap met SNI standards with water content ranging from 12% to 17%, a pH between 9.57 and 9.81, and free fatty acids ranging from 0.9% to 1.7%. The inhibition zone for Staphylococcus aureus was 7.81 mm, indicating a moderate antibacterial effect. These findings suggest that eco-enzyme provides a bacteriostatic effect, inhibiting bacterial growth without necessarily killing the bacteria, and highlight its potential for developing sustainable and effective antibacterial products. Keywords: antibacterial soap, eco-enzyme, Staphylococcus aureus.

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