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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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Use of Gold Mine Waste Sand From Penda Pilang Village as Hrs-Base Mixture Deskianto Deskianto; Supiyan Supiyan; Devia Devia
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.597

Abstract

Roads are very vital access or transportation infrastructure for human movement from one location to another. The materials utilized must fulfill the quality criteria established with respect for economics, availability of natural resources, and efficient distribution. This study used gold mine waste sand as a component of Hot Rolled Sheet Base. (HRS-BASE), this material has considerable potential that has not been utilized properly and is expected to be an alternative material in the area well as one of the steps to handle waste reduction by increasing its function value. Analyzing the characteristics of gold mine waste sand marshall with a composition of Optimum Asphalt Content (KAO) of 7% resulted in a stability value of 975.522 kg, flow of 3.10 mm, Inter-Aggregate Cavities (VMA) of 18.600%, Cavities in the Mixture (VIM) of 3.221%, Cavities Filled with Asphalt (VFB) of 82.689%, and Marshall Quotient of 314.712kg/mm.
Feasibility Analysis of Smelter Grade Alumina (SGA) Project Development at PT. X Dio Rianto; Dedy Setyo Oetomo; Rizky Fajar Ramdhan
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.598

Abstract

Abstract: Indonesia has a wealth of promising natural resources in the form of minerals and coal such as bauxite. Considering that the government is planning to stop bauxite exports and increase domestic processing or downstreaming. So it is necessary to carry out a factory financial feasibility analysis for processing bauxite into alumina or Smelter Grade Alumina (SGA) at PT.X. Feasibility analysis using a reference capacity of 1,000,000 tons of alumina. The parameters used to determine the financial feasibility analysis in alumina production at PT. X are Net Present Value (NPV), Internal Rate Return (IRR), Payback period (PP). Based on the results of the analysis research, it was obtained that the total cost of CAPEX (Capital Expenditure) that had to be spent was Rp. 7,057,514,558,158 and the total OPEX (Operational Expenditure) costs that must be incurred is Rp. 1,479,733,686,519 with a Net Present Value of Rp. 208,752,623,349, the Internal Rate of Return is 15%, and the Payback Period is 8 Years and 3 Months, so the project is feasible to run.
A Management of Water Quality Parameters In Cultivating Vaname Shrimp (Litopenaeus vannamei) In Intensive Tambak PT. Aneka Tambak Oseana Nusantara , NTB Pieter Amalo; Riris Yuli Valentine; Catur Pramono Adi; Restye Putri Geofani Mbura
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.600

Abstract

One of the causes of failure in vaname shrimp cultivation is poor management of water quality during the production period. Therefore, water quality management during the maintenance process is absolutely necessary. To study water quality management in growing white vaname shrimp (Litopenaeus vannamei) at PT. Aneka Pond Oceana Nusantara, NTB. Knowing the obstacles and solutions in managing water quality during practical activities at PT. Aneka Pond Oceana Nusantara, NTB. The technique for rearing vaname shrimp (Litopenaues vannamei) is as follows: preparing the container; the container is filled with water; fry selection; feeding interval; The results of water quality management strategies for vaname shrimp cultivation include: temperature (27 -28℃), morning brightness (30-118 cm), afternoon (28-108 cm). Morning pH (7.7- 8.2) afternoon (7.8-8.6), morning DO (5.87-6.18 ppm) evening (4.82-5.92 ppm), salinity (30- 33).
Facilities Re-layout of “X” Health Center Dini Yulianti; Tombak Gapura Bhagya; Didi Kusvendi
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.601

Abstract

Public health center as the first place to carry out tracer of covid-19 survivors and theimplementation of the COVID-19 mass vaccine as well as the large interest of the people who carry out treatment at the Public health center, the Public health center is a very risky place for the spread of infectious diseases, especially covid-19. In order to minimize the effect of transmission on infectious diseases and optimize the layout of the facilities, it is necessary to improve the layout of the facilities (re-layout) of the existing Public health center services. So far, Public health center services are still very irregular, such as the distance from general medical centers to other medical centers. The purpose of this research will be to produce a new facility layout for the Public health center, so that it can optimize employee performance and the layout of the facility. In this study, the layout of the facility was redesigned using the Activity Relationship Chart (ARC) And Material Handling Costs are used to determine the distance between rooms and to estimate degree of closeness between rooms, the results of this study are two layout designs aimed at puskesmas which aim to approach the treatment center and pharmacies as well and keep the ISPA room away to minimize the spread of COVID-19 disease.
Briquette Characteristics of Mixed Charcoal of Taro Peel and Rice Husk Galu Murdikaningrum; Mutiara Putri Utami Susanto; Raden Tarisa Nurhanifah; Mua lifah
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.603

Abstract

Petroleum reserves in Indonesia are running low, as well as fossil energy. If these conditions are not handled appropriately and quickly, the Indonesian nation will experience a petroleum crisis. Biomass briquettes are made from a combination of rice husks, taro husks, and a tapioca flour adhesive, and they will be produced as a byproduct of Indonesia's extensive agricultural sector and the growing taro industry. The use of taro skin in conjunction with other raw materials gives this study an element of originality. The purpose of this research is twofold: to disseminate knowledge about the potential of biomass waste, and to analyze how different biomass waste mixtures affect the briquettes SNI-required properties. An experimental approach was used for this study. In this experiment, three different weight ratios of taro husks to rice husks (KT:50%, KT:75%, and KT:100%) were employed as the primary raw materials. Five-and-a-half percent of the briquette dough's overall weight comes from tapioca flour's role as an adhesive. Preparation of briquette materials, carbonization, briquetting, and testing for biomass briquette characteristics are the first steps in the study approach. The calorific value, moisture, ash, volatile matter, binding carbon, and density tests are all part of this battery of analyses. The highest grade briquettes have a calorific value of 3,993.92 cal/g and are made from 100% KT briquettes. KT briquettes with a 75% moisture content are the highest grade briquettes available. At 22.90%, KT briquettes have the lowest ash level of any high-quality briquettes. Briquettes made from 100 percent KT, or 0.09 percent volatile matter, are the highest grade available. KT briquettes, which have a bonded carbon content of 74.59%, are the highest grade option. 50% KT briquettes, with a density of 0.48 g/cm3, are the highest grade briquettes available.
Optimum Splice Thickness Ratio Splicer of a Winding Machine to PE20KT Thread Splicing Quality Hendri Pujianto; Bambang Yulianto; Hamdan S Bintang; Dinda Amelia Pramesti
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.605

Abstract

Winding machines are needed after the spinning process on ring-spinning machines because small packages of spinnerets are mostly not suitable for efficiently carrying out subsequent processes such as weaving and knitting. The splicer is independently actuated to optimize splicing cycles. PT Delta Dunia Tekstil II (DDT 2) is a company operating in the spinning industry, with the CD line producing 100% polyester yarn, which is used to make fabric in the knitting process. Based on observations, thread defects occur, such as loops and holes in the knitted fabric, because the thread splices resulting from the winding process are brittle and thin. Experiments on setting joint thickness parameters on splicer adjustment indicators 1–5 with a ratio of 0.25 were carried out. After carrying out the experiment, 3 ratios were obtained for sampling visual tests and joint strength, namely a ratio of 2.5, 2.75, and 3. Observing and calculating the splice strength of the three splicer ratios sampled, it was found that the ratio of parameter 3 in the splicer was visually very good and consistent. Strange results also meet the standard, of 92.37%. The optimal splicer ratio setting that can be used for the Carded 20 KT production process is setting the splicer ratio with a splice thickness parameter of 3.
Analysis of Interest In Using Electrical Bicycles in Palangka Raya Vivien Nopella Valentina; Robby Robby; Sutan Parasian Silitonga
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.606

Abstract

Every year the number of population growth is increasing, therefore the use of transportation is also increasing. With the existence of environmentally friendly transportation products, it is hoped that more and more people will contribute to using them to reduce the impact of global warming. One of the environmentally friendly transportation products is an electric bicycle. This study specifically aims to analyze the characteristics of electric bicycle mode selection and analyze the electric bicycle mode selection model in the city of Palangka Raya. The development of electric bicycles in anticipation of depleting reserves of fuel oil has begun. Palangka Raya City is one of the cities where the use of electric bicycles is gaining popularity. The Logit Binomial model was used to analyze the data from the sort of survey employed in this research, which was based on respondents' expressed preferences. According to the findings of the research, it was shown that what influenced interest in choosing the mode of electric bicycle use were the variables age (X1), gender (X2), family structure (X3), motorcycle ownership (X11), long distance traveled (X15), education/school (X22), spending per month (X24) it is obtained that the overall model prediction rate variable is 79%.
In vitro antagonism test of endophytic isolates from the ciplukan plant (Physalis angulata L.) against Ralstonia solanacearums Ika Afifah Nugraheni; Inneke Ashri Mawaddah
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.607

Abstract

Ralstonia solanacearum was a pathogenic bacteria that causes wilt disease which can cause up to one hundred percent damage to horticultural plants. Therefore, a control effort was needed to overcome this problem. The use of pesticides was an alternative that can be used to suppress the growth of the pathogen R. solanacearum. However, its continuous use poses a high risk to the environment so friendly and safe control efforts are needed. One way was by utilizing endophytic bacteria. This study aims to test the ability of endophytic bacterial isolates from ciplukan plant (Physalis angulata L.) to suppress the growth of the pathogenic bacteria R. solanacearum in vitro. The method in this research includes rejuvenating endophytic bacterial isolates BA2(3), BA3(1), DA1(4) and BU3(5) from ciplukan plants (Physalis angulata L.) obtained from research conducted by Setianah (2020), observations macroscopic and microscopic endophyte isolates, hypersensitivity test of endophytic bacteria on tobacco plants (Nicotiana tabacum L.), then continued with an in vitro antagonist test using the Kirby Baurer technique. Research data shows that of the four candidates, two isolates of endophytic bacteria, namely BA2(3) and BU3(5), showed a negative hypersensitivity reaction which was characterized by the absence of necrosis symptoms in the hypersensitivity test, so these isolates could be tested for antagonists. The results of the antagonist test showed that isolates BA2(3) and BU3(5) had the potential to inhibit the growth of R. solanacearum which had an inhibitory diameter of 3.03 mm and 1.60 mm in the first 24 hours of incubation. It is hoped that the ability of endophyte isolates BA2(3) and BU3(5) to inhibit the growth of the pathogen R. solanacearum can be used as a biological agent to reduce the use of pesticides in treating plant diseases.
Analysis of The Ant Number Effects on Ant Colony Optimization for Solving Russia-20-Nodes-SDVRP Instance Ekra Sanggala; Muhammad Ardhya Bisma
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.608

Abstract

SDVRP is a variation of the CVRP that allows different vehicles to visit the same node. ACO performance is influenced by it’s parameter value. The number of ants parameter has a strong influence on ACO Performance, because it influences directly on solution quality and computation time. It is too hard to find the parameter value that can make ACO performance being the best performance. Because of this, what can be done is to test several parameter values, then compare the ACO performance of each parameter value. Russia-20-Nodes-SDVRP Instance is attractive to be solved because it’s number of nodes are not too many, only 20 nodes. Based on that number of nodes, the computation time of this instance is relatively fast and it has a lot of solution candidate. This research focus on the ant number effects on ACO for Solving Russia-20-Nodes-SDVRP Instance. Five ant numbers will be tested, they are 5, 10, 15, 20 and 25 ants, each ant number will be tested 10 times, so there will be 50 tests. These tests show that more ants used, greater possibility of getting a better route, but longer calculation time needed. The decrease in average of length of route is 1,1521% while the increase in average of calculation time is 42.5525%.
The Effect of Temperature Variations in the Pressing Process on Glossing Defects Bigborn 2-Tuck Pants Style 3651 Trousers in the Finishing Department of PT. X Afriani Kusumadewi; Feny Nurherawati; Filly Pravitasari
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.609

Abstract

Abstract: The pressing process is a process of applying heat and pressure at a predetermined time. Temperature, time and pressure in the pressing process in the finishing department play an important role in the quality of the results of pressing garment products at PT X. Various types of main materials used in the garment production process at PT X require different conditions of temperature, time and pressing pressure, so it is necessary to know the appropriate pressing conditions for each type of material. If these three elements are not appropriate, it can give rise to several categories of defects, one of which is often experienced by PT X, namely glossing/shiny defects. The method that used in this research was carried out by experimenting with variations in pressing temperature where the time and pressure variables used were fixed. The temperature variations used in this research include 600C, 700C, 800C, 900C and 1000C.. This research aims to determine the optimum temperature that used in the pressing process in making Bigborn 2-Tuck Pants Style 3651 trousers with the main material composition being 65% Polyester and 35% Katun. The pressing results are then tested for the tensile strength of the fabric towards the warp and towards the weft of the fabric. Based on the experiments carried out, it shows that for temperature variations of 600C and 700C there are poor press defects. At varying temperatures of 800C and 900C, there are no glossing defects. At 1000C it has glossing/shiny defect. Next, to obtain the most optimum temperature conditions, the experiment continued with testing the tensile strength of the fabric. Based on the fabric tensile strength test data, an optimum temperature condition was obtained in the process of pressing Bigborn 2-Tuck Pants Style 3651 trousers, namely at a temperature of 800C. The tensile strength results obtained at a temperature of 800C were 55 kg for the tensile strength of the fabric in the warp direction and the tensile strength of the fabric in the weft direction was 45.5 kg. Keywords: temperature, pressing, glossing

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