cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Tiara Nurhuda
Contact Email
sainteksjournal.unbar@gmail.com
Phone
+6282231502165
Journal Mail Official
sainteksjournal.unbar@gmail.com
Editorial Address
Jl.Pasir Kaliki No. 199 Bandung, Jawa Barat
Location
Kab. sidoarjo,
Jawa timur
INDONESIA
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 16 Documents
 1   2 
Search results for , issue "Vol 7 No 01 (2025): Maret" : 16 Documents clear
Analysis of factors influencing the performance of the ammonia converter at plant IIB of PT Pupuk Sriwidjaja Nurisman, Enggal; Effendi, Yunita; Septiani, Nadila
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.701

Abstract

The Ammonia converter is the primary equipment in an ammonia plant in PT Pupuk Sriwidjaja IIB where the conversion process of hydrogen and nitrogen into ammonia takes place. During this process, various constraints often arise such as changes in temperature, pressure, and the H2/N2 ratio, which can result in decreased performance and impact the conversion of the produced products. Performance evaluation of the ammonia converter is conducted to determine the condition and main factors affecting the ammonia conversion on the ammonia converter by collecting conversion data, H2/N2 ratio, temperature, and pressure. Based on the evaluation results from the data of September-November 2023, it was found that the actual average conversion of ammonia is better than the design, amounting to 20.43%. The highest conversion of ammonia is at a temperature of 399.25°C and pressure of 152.18 kg/cm2, while the lowest conversion is at a temperature of 402.17°C and pressure of 150.52 kg/cm2. Furthermore, based on statistical tests using multiple linear regression method, there are two main factors influencing the conversion of ammonia, namely temperature and pressure, while the H2/N2 ratio does not significantly affect the conversion of ammonia due to its fluctuating nature.
Comparison of the Two Bath Two Stage Dyeing Method with One Bath Two Stage on Energy Efficiency in Dyeing Polyester-Cotton Fabric (80% - 20%) Using Dispersion-Reactive Dyes Kurniawan, Kurniawan; Tantowi, Tantowi
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.789

Abstract

The efficiency of the dyeing process is widely used by the textile industry today to reduce production costs while maintaining the quality of the products produced. The dyeing process carried out for polyester-cotton blend fabrics (80% -20%) generally uses a two bath two stage dyeing method using disperse-reactive dyes. This dyeing process results in the dyeing process taking longer and using a lot of resources such as energy and water. In the one bath two stage method the process is faster because only one dyeing solution is used to dye the polyester-cotton at the same time with two fixation stages. Experiments were carried out on polyester-cotton fabric (80%-20%) using a disperse dye (Coralene Blue 2RL) – reactive (Corazol Brill Blue RN). The color maturity value (K/S) for fabric resulting from the two bath two stage dyeing method is 1.1138 while the one bath two stage method reaches 1.1116. The standard deviation value (evenness of color) of fabric resulting from the two bath two stage dyeing method is 0.08 while the one bath two stage method is 0.05. Color fastness to washing and rubbing using the two bath two stage method and the one bath two stage method both have good fastness.. Based on the economic aspect, the one bath two stage method provides savings in terms of dyeing time of up to 17.64% and water usage savings of up to 50% compared to the two bath two stage method. However, the total cost of the two bath two stage dyeing method has a lower total cost, namely IDR IDR 839,223.47. Meanwhile, the one bath two stage method has a total cost of IDR 875,183.25. This cost is for dyeing 500m of fabric weighing 112.14 kg. The total cost per kilogram of fabric for the two bath two stage method is IDR 7,483.71 and one bath two stage IDR 7,804.38 with a difference of IDR 320.67.
Study of Physical-Chemical Characteristic in Dyeing with Teak Leaf Extract: The Role of Post-Mordant and Alkaline Solution Cahyaningtyas, Hilmi Amanah Aditya; Vera, Ade; Mulyani, Rr Wiwiek Eka
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.797

Abstract

Teak leaf extract has potential as a natural dye for dyeing textile materials because it contains many natural pigments. The exhaust method was used to dye cotton woven fabric with teak leaf extract at 40 oC in an alkaline solution (pH 10). The dyed fabric then proceeded to the postmordant process with a comparison of alum and ferrosulfate variations. Evaluation of physical and chemical characteristics was carried out by testing color fastness and evenness, color space, and color fastness to washing and rubbing. According to the results, ferrosulfate mordant provided the highest values for color fastness and evenness (K/S 1.4805 and SD 0.0055) in comparison to alum (K/S values of 0.2857 and SD 0.0077). Alum mordant created a color space of a* +5.36 and b* +3.75, while ferrosulphate mordant produced a* +0.55 and b* +7.86. Both mordants received good ratings (4-5) for color fastness to washing. Alum had a good color fastness rating (4-5) while ferrosulfate received a rating of (4).
Weaving Production Monitoring System in Shuttleless Picanol Machine Hananto, Agus; Wahidin, Didin; Zulfahmi, Muhammad; Oktavian, Dinan Safta
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.829

Abstract

The development of the textile industry, especially the weaving industry, has been progressing, including quality performance, capacity expansion and production efficiency. One of the technological advances that has not been widely embedded in weaving production machinery is the technology related to the application of Industry 4.0, which has the main objectives of increasing production efficiency, reducing waste, and lowering production costs. In general, production equipment/machines in the textile industry, especially in the production of woven fabrics on shuttleless picanol machines, do not yet have a control system that can be used to build intelligence in the application of Industry 4.0. To be intelligent, these production machines need to be equipped with data processing modules, a series of sensors, and data processing systems. The development is carried out in stages, one of which is the monitoring system. Production monitoring was chosen because in the woven fabric manufacturing industry, production control and monitoring is a very important part of increasing production capacity and production efficiency, and supporting the application of Industry 4.0. This research focuses on designing and manufacturing a monitoring system for the production of woven fabrics, especially Picanol shuttleless weaving machines, which provides information services in the form of monitoring data on the amount of production, condition/status of machine operation, and consumption of electrical energy, displayed in graphical form (dashboard) in real time and can be accessed via a localhost network using a PC computer or smartphone web browser.
The Implementation Of Statistical Process Control (SPC) Method On Carton Box Production Rahmawati, Ayu Nova; Shalshabilla, Asyiffa Ananda
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.838

Abstract

Due to the era of high industry growth, the packaging industry in Indonesia has to raise the quality of its goods. PT Kartonindo Mega Jaya, a corrugated cardboard supplier company, needs to maintain the quality of their products to ensure that the quality standards are met. The SPC (Statistical process control) method is implemented to control product quality and reduce defect rates. This study uses the SPC method with the attribute control map (p-chart) technique because the data used are the number of product defect products with a non-constant sample size. There are four main problems, namely inappropriate product size (34.5%), skewed image printing (21.8%), imperfect product shape (25%) and uneven coloring (18.7%) with a total of 3,913 units of product defects. The results showed that the quality of cardboard box products at PT Kartonindo Mega Jaya could not be controlled statistically, the control chart showed that there were only 17 data within the control limits, which indicated that quality control was not consistently implemented. The types of deffect and their causes are examined using the Cause Effect Diagram approach.. Based on the observations, the factors that influence the above problems are human factors, machines, methods, environment and materials used.
Material Inventory Planning Through Continuous Review System and Periodic Review System Methods Bawono, Digdo; Winarno, Winarno
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.843

Abstract

PT Binder Indonesia is a company that operates and focuses on the manufacturing industry. This company is a supplier of pipe supports and suspension equipment used in various types of industries. Some of the products produced by PT Binder Indonesia include HD PUF Cryogenic Pipe Support, Clamp 2-Bolt Pipe Support, and Clamp 3-Bolt Pipe Support, all of which are pipe products. In producing its products, PT Binder Indonesia certainly requires several types of materials used. One of the materials used is Carbon Steel PLA36.00.10MM. In the production process carried out, there was a problem that occurred in the form of a lack of availability of raw materials Carbon Steel PLA36.00.10MM. As a result, the company cannot meet consumer demand because of this. Therefore, the purpose of this study is to plan the supply of raw materials for PT Binder Indonesia, especially for Carbon Steel PLA36.00.10MM material. The method in this study is through the Continuous Review System (P) and Periodic Review System (Q) to plan the company's raw material inventory. The results of the study showed that the calculation using the Q Method obtained a total cost of Rp. 3,948,822,013. The calculation results using the P Method obtained a total cost of Rp. 3,948,901,550. This shows that the Q Method is able to provide a smaller total cost result when compared to the P Method.
The Evaluation of mental workload using the NASA task load index (NASA-TLX) method on production department employees Iman, Nurul; Firmansyah, Nunung Agus; Himayati, Ade Ima
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.858

Abstract

Human resources are assets and priorities for the company, production activities cannot be carried out optimally and significant losses can occur. From human or employee activities can cause workload, although the level of workload on employees will be different. PT. XYZ is a company engaged in manufacturing the production of bathroom doors from galvanized steel. Production workers often feel the workload, it is complained about by the decline in performance and productivity of work in meeting the company's targets and demands. One of these factors is mental burden that exceeds capacity, thus having an impact on mental health or stress. The purpose of the study was to determine the level of mental workload by measuring and analyzing using the NASA Task Load Index (NASA-TLX) method. The NASA-TLX method is a measurement of mental workload with six indicators, namely Physical Demand, Mental Demand, Temporal Demand, Performance, Effrot, and Frustration. Of the 35 samples of workers in the production unit at PT. XYZ obtained an average score of 85 indicating the "Very High" category with the highest indicators being Effort and Physical Demand. This is influenced by the lack of ergonomic factors of a comfortable and safe work environment system.
The Effect of Accleration and Braking on the Strength of Chopper-Motorcycle Frames under Static Loading Conditions Gumilar, Aji; Akbar, Rozaqy Nurfadhila
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.859

Abstract

Abstract: This study aims to analyze the static strength of two custom chopper motorcycle frame designs considering various loading cases, including normal loading, maximum acceleration, maximum braking, and 5G gravitational acceleration. The analysis is conducted using a numerical simulation approach with the Finite Element Method (FEM) to measure von Mises stress, displacement, and safety factor. The simulation results show significant differences between the two frame designs. Frame 1 exhibits poorer performance with lower safety factors under 5G gravitational acceleration conditions, displaying very high stress and larger displacements, whereas Frame 2 performs better with a consistently safe safety factor across all loading conditions. This study provides important contributions to the development of safer and more functional custom motorcycle frame designs, considering safety aspects in everyday use and modifications.
Design of a 100 KW Kaplan Turbin A Case Study on a Small-Scale Hydropower System Saidiman, Mohamad; Dewi, Rimba Krisnha; Supriyono, Toto
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.864

Abstract

Some parts of the world, such as Indonesia, are blessed with nature that has abundant water energy potential. Water energy includes water turbines. This paper discusses planning a Kaplan-type water turbine with a capacity of 100 kW. The flow of water through Kaplan's turbines is axial. Water currents theoretically have an effective bulk height called head height, H is at least 5 (five) meters with a minimum theoretical discharge of 4.25 m3/s. The results of the calculation show that this Kaplan-type water turbine can produce maximum power at a theoretical discharge of 166.77 kW. The velocity of water entering the turbine inlet chamber is 3.123 m/s, while the theoretical velocity is 13.48 m/s. The profile of the blade was chosen as type Go 480 with a radius of 450 mm, and the weight of each blade was 91.72 N. The water flow on the spoon causes a blade reaction force of 11,996 N for centrifugal force and 1073 N for axial force. The torque produced from this reaction force is 775 Nm. The next plan is to calculate the force on the blade by calculating the moment of inertia, standard voltage, tensile stress, and shear stress. From the results of this strength calculation, the type of material that will be used in making the spoon can then be determined to ensure that the spoon is in a safe state during its operation but still efficient. Next is the process of making spoons, where the steps start from making patterns, making molds, smelting, and pouring the selected metal materials into the machining process.
Analysis of the influence of food types on human intelligence by correlation method Nurhayati, Ai; Purnawan, Benny; Jatnika, Rohman Agus; Widiastuti, Meina; Mardaweni, Riri
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.865

Abstract

Every human being certainly needs nutritious food intake to support physical and mental strength in order to do all his daily activities. There are some human activities that require strong thinking power. Strong thinking skills can be obtained from adequate nutritional intake. The problem is that people do not know the great influence of food types on human intelligence. Therefore there needs to be research that calculates the magnitude of the influence of food types on intelligence. This research is important to do so that consumers can be good at choosing types of food that can increase human intelligence. The purpose of this study is to measure the magnitude of the influence of food types on the level of human intelligence. This research method uses the correlation analysis method. The results of this study indicate that protein food represented by fish has a positive influence on the level of human intelligence. The correlation value obtained from the calculation results is 0.796. The correlation value between 0.7 - 0.9 is included in the category of high linear relations. Therefore, there is a strong relationship between the number of fish consumed to intelligence. Fish is a type of food that contains albumin which is very important for the human intelligence system. Thus it can be concluded that the type of fish food has a strong influence on the level of human intelligence.

Page 1 of 2 | Total Record : 16

 1   2 

Filter by Year

2025 2025


Reset
Filter By Issues
All Issue Vol 7 No 02 (2025): September Vol 7 No 01 (2025): Maret Vol 6 No 2 (2024): September Vol 6 No 1 (2024): Maret Vol 5 No 2 (2023): September Vol 5 No 1 (2023): Maret Vol 4 No 2 (2022): September Vol 4 No 1 (2022): Maret Vol 3 No 2 (2021): September Vol 3 No 1 (2021): Maret Vol 2 No 2 (2020): September Vol 2 No 1 (2020): Maret Vol 1 No 2 (2019): September Vol 1 No 1 (2019): Maret More Issue