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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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Analisis Stabilitas Tanggul Penahan Tanah Pedestrian Zona II Situ Bagendit Tiara Nurhuda
Sainteks: Jurnal Sain dan Teknik Vol 4 No 1 (2022): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i1.399

Abstract

Abstract: Situ Bagendit is one of the natural tourism areas in Garut Regency with an area of 124 Ha. Besides being a tourist attraction, Bagendit Lake is also a suggestion for irrigation in the surrounding area. In addition to channeling irrigation, earth retaining embankments built together with pedestrians must also meet the safety requirements of stability. This study aims to determine the value of the safety factor of the Situ Bagendit embankment against slipping and overturning. To determine the value of stability, the forces and moments acting on the embankment and water are analyzed. The value of slip or shear stability is 1.73 and the value of rolling stability is 2.1, where the value is categorized as safe because it is more than 1.25. It was concluded that the Situ Bagendit II embankment was categorized as safe against sliding and overturning Abstrak: Situ Bagendit merupakan salah satu kawasan wisata alam di Kabupaten Garut dengan luas 124 Ha. Selain menjadi objek wisata, situ Bagendit juga sebagai saran irigasi di daerah sekitar. Disamping untuk menyalur irigasu, tanggul penahan tanah dibangun bersamaan dengan pedestrian juga harus memenuhi persyaraytan aman dari stabilitas. Penelitian ini bertujuan untuk mengetahui nilai faktor aman tanggul Situ Bagendit terhadap gelincir dan guling. Untuk mengetahui nilai stabilitas maka dianalisis gaya-gaya dan momen yang bekerja pada tanggul dan air. Nilai stabilitas gelincir atau geser adalah 1,73 dan nilai stabilitas guling adalah 2,1, dimana nilai tersebut dikategorikan aman karena lebih dari 1,25. Dissipulkan bahwa tanggul Situ Bagendit II dikategorikan aman terhadap geser maupun guling
Pengujian Konsentrasi Aktivitas Anti Bakteri Terhadap Escherichia Coli dan Staphylococcus Aureus dari Ekstraki Etanol Daun Talas Bogor Rini Siskayanti; Muhamad Engkos Kosim; Muhammad Nitis Jiwana Ksatria
Sainteks: Jurnal Sain dan Teknik Vol 4 No 1 (2022): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i1.400

Abstract

Abstract: Talas Bogor (Colocasia esculenta L. Schott) is one of the non-rice carbohydrate sources which is quite rich in nutrients, and has a fairly high economic value. All parts of the taro plant contain flavonoids and saponins that function as antibacterial compounds by interfering with bacterial cells in the wound and exterminating fungi, thus helping the wound healing process. The purpose of this study was to test the activity of Escherichia coli and Staphylococcus aureus bacteria on Talas Bogor leaf extract and to determine the best concentration in inhibiting bacterial growth. There are two methods for this test, namely the spread method and the dilution method. In this study, the method used to test the antibacterial activity of Escherichia coli and Staphylococcus aureus bacteria on Bogor taro leaves was the disk diffusion method. Observational data obtained through the knowledge of presence or absence of a clear area formed around the paper disc is indicated by the growth of bacteria. The ethanol extract was carried out by macerating dry sample powder with 96% ethanol for 3 x 24 hours where the filtrate was evaporated with a rotating evaporator to obtain a thick Bogor Taro leaf extract. This test was carried out on several variations of concentration to determine the best antibacterial activity in inhibiting the tested bacteria. The concentration variations carried out were 1.25%, 2.5%, 5%, 10% and 15%. Based on the data, the diameter of the largest inhibition zone for Escherichia coli was 15% with diameter of an inhibition zone 14.11 mm, while for Staphylococcus aureus it was 15% with diameter of an inhibition zone 16.51%. The positive control used was chloramphenicol while the negative control was 20% sterile DMSO. Abstrak: Talas Bogor (Colocasia esculenta L. Schott) adalah salah satu tanaman sumber karbohidrat bukan beras yang cukup kaya akan gizi, dan memiliki nilai ekonomi yang cukup tinggi. Seluruh bagian tanaman talas mengandung flavonoid dan saponin yang berfungsi sebagai senyawa antibakteri dengan mengganggu sel bakteri di dalam luka serta pembasmi fungi, sehingga turut membantu proses penyembuhan luka. Tujuan dari dilakukannya penelitian ini adalah sebagai pengujian aktivitas antibakteri Escherichia coli dan Staphylococcus aureus pada ekstrak daun Talas Bogor serta mengetahui konsentrasi terbaik dalam menghambat pertumbuhan bakteri. Ada dua metode untuk pengujian ini yaitu dengan cara metode penyebaran dan metode pengenceran. Pada penelitian ini, metode yang digunakan untuk pengujian aktivitas antibakteri dari Escherichia coli dan Staphylococcus aureus terhadap daun talas Bogor ialah dengan metode penyebaran (disk diffusion method). Data pengamatan yang didapat berupa tampak atau tidaknya daerah bening yang terbentuk di sekeliling kertas cakram ditunjukkan dengan pertumbuhan bakteri. Ekstrak etanol di lakukan dengan cara serbuk sampel kering di maserasi dengan etanol 96% selama 3 x 24 jam dimana filtrat nya diuapkan dengan rotary evaporator sampai didapatkan ekstrak daun Talas Bogor yang kental. Pengujian ini dilakukan terhadap beberapa variasi konsentrasi untuk mengetahui aktivitas antibakteri yang paling baik dalam menghambat bakeri yang diuji. Variasi konsentrasi yang dilakukan ialah 1.25%, 2.5%, 5%, 10% dan 15%. Berdasarkan dari data, diameter zona hambat paling besar dari bakteri Escherichia coli yaitu 15% dengan diameter zona hambat 14.11 mm, sedangkan untuk bakteri Staphylococcus aureus yaitu 15% dengan diameter zona hambat 16.51%. Sebagai kontrol positif digunakan kloramfenikol, dengan kontrol negatif yaitu DMSO steril 20%.
Re-Layout Of STNK Annual Tax Payment At The XXX Samsat Office By Promodel Simulation Tombak Gapura Bhagya
Sainteks: Jurnal Sain dan Teknik Vol 4 No 1 (2022): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i1.401

Abstract

Re-layout is an action that requires a large amount of money if done manually. So it is necessary to use technology to minimize the cost of re-layout. Simulation is one solution that can be applied in solving problems related to layout improvement. The SAMSAT XXX office experienced a very heavy queuing problem, so it was necessary to improve the layout by changing the position of the service office. By using the modeling system, the STNK tax service system can be created in a virtual system and a new layout is created using the promodel. The results indicate the need for additional registration counters from the initial one consisting of only one counter to three counters, and this has the effect of increasing the productivity of payment counters and delivery counters by up to 15%. So that the productivity burden of the three counters at the SAMSAT XXX office has the same load.
Employee Productivity Analysis in the Production Department at PT. "X" Alam Avrianto; Irfan Rizky Gumilar
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.446

Abstract

Productivity is an important aspect because it will affect the sustainability of an organization/company, as well as PT. X. Based on the results of data collection, it is seen that there is a decrease in production productivity shown by the amount of production that is below the target. The purpose of this research is to analyze the causes of the decline in productivity. This study uses quantitative and descriptive methods in measuring the dimensions of employee productivity where the research data used is population data which is all employees in the production section. Based on the results of the study, it is known that the decrease in productivity is caused by the poor attitude and behavior of employees at work. This is indicated by the presence of other movements in addition to the core movement in making products such as using a mobile phone, chatting, etc. at work. Although the majority of the dimensions can be said to be good but with the lack of good attitudes and behavior of employees, it has a very large influence on the productivity of the company.
Analysis of pH Changes in Cassava Fermentation Process Exposed to ELF Magnetic Fields Intensity 100????T, 200????T and 300????T Siti Magfirah; Trapsilo Prihandono; Sudarti Sudarti
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.448

Abstract

ELF (Exemelly Low Frequency) is a spectrum of electromagnetic waves with a frequency of less than 300 Hz. This study aims to determine the effect of exposure to the ELF magnetic field on the degree of acidity (pH) in the maturation process of cassava tape. The research method used is a true experiment, namely by giving exposure to the ELF magnetic field in the experimental group and not giving exposure to the ELF magnetic field in the control group. Exposure to the ELF (Extremely Low Frequency) magnetic field on cassava tape used intensities of 100????T, 200????T, and 300????T with various exposure times, namely 30 minutes, 60 minutes, and 90 minutes. The type of research used is experimental research with a completely randomizedidesign (CRD) which aims to examine the effect of treatment by repeating the experiment. Data collection was carried out after the 1st day to the 4th day. The results showed that exposure to ExtremelyiLowiFrequencyi(ELF) magnetic fields can affect the average pH value in the cassava tape fermentation process which is shown through variations in the bar chart. The experimental group samples (E100????T 60') and (E300????T 30') on day 1 to day 4 there was a significant change in pH value.
The Effectiveness of Moringa Oleifera in Purifying Pegasius SP Pond Wastewater Tri Mulyani; Astri Sri Astuti
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.449

Abstract

Pond water of silver catfish (Pangasius sp) has high color value, turbidity, and organic compound with the color concentration 250 Pt-Co, turbidity 13.5 NTU, and organic concentration 197.56 mg/L. High concentration of color, turbidity, and organic compound in pond water of silver catfish caused the water should be treated. One of the treatment method is chemical treatment with coagulation-flocculation method. Pond water of silver catfish was treated into clean water using powder of Moringa seed (Moringa oleifera) as organic coagulant using coagulation-flocculation method with Jar-Test system. The aim of this research is to purify water with knowing the removal efficiency of color, turbidity, and organic compound by treating pond water of silver catfish using coagulation-flocculation method and determining optimum dose of coagulant. Jar-Test result showed the color removal efficiency as 86.00% in day 1; 90.75% in day 2; and 88.77% in day 3 with 60 ppm as optimum dose. Turbidity removal efficiency was 84,52% in day 1 and 87.80% in day 2 with 60 ppm as optimum dose. Organic compound removal efficiency was 73.87% in day 1; 77.13% in day 2, and 77.29% in day 3 with 60 ppm as optimum dose.
The Effect of Binder FS-462 and Sky Binder 235 on Color Fastness Resistance in 100% Polyester Printing with Pigment Dyes Luciana Luciana; Winni Oktaviani
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.453

Abstract

The printing with pigment dyes on 100% polyester fabric is one of the materials that can be used to make clothes. Clothing products made with the printing technique must have a good color fastness. In printing with pigment dyes must be mixed with a binder. These binder have different solid content (% glucose). Therefore, the selection of the right binder is very important t produce quality fabrics with good color fastness. The purpose of this study was to determine the value of color fastness to washing and rubbing and the value of color differences in the printing process with pigment dyes on 100% polyester fabrics and to determine which binder had the best results. The method of this study used is an experiment with a lab scale. After experimenting with the printing process using the Binder FS-462 and Sky Binder 235, a test was conducted which stated that Binder FS-462 was the binder that had the best results. The test values ​​were obtained as follows, color fastness to washing on dark colors 4-5 for staining scale and 4 for grey scale, color fastnes to rubbing on dark colors 4 for dry and 2-3 for wet. The factory standard is for color fastness to washing 3 for staining scale and 4 for grey scale, color fastness to rubbing 3-4 for dry and 2-3 for wet, and color difference values ​​>1.
Utilization of Sludge from Textile Wastewater Treatment Plants as Raw Material for Iron Coagulant Galu Murdikaningrum; Kenny Kencanawati; Bagus R Ramdhani; Rizal Ramdani
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.454

Abstract

Treatment of liquid waste using iron coagulant produces a by-product in the form of sludge which requires large handling costs. To reduce environmental pollution and sludge treatment costs, the sludge will be used as raw material for the manufacture of iron coagulant. This study aims to determine whether the sludge from textile WWTP can be used as raw material for iron coagulant. To determine the effectiveness of coagulants made from sludge, this study will compare the results of the coagulation-flocculation process using commercial iron coagulants and iron coagulants made from sludge as well as mixed coagulants with ratios of commercial iron coagulants to iron coagulants made from sludge of 70%, 60%, 50%, 40%, and 30%. The water quality resulting from the coagulation-flocculation process was indicated by pH, color turbidity, Total Dissolved Solid (TDS) and Total Suspended Solid (TSS). The results showed that the water quality of the coagulation-flocculation process was worse when mixed coagulant was used with a smaller ratio of commercial iron coagulant to iron coagulant made from sludge. A mixture of commercial iron coagulant and iron coagulant made from sludge that meets the quality standard for the TSS parameter is a mixed coagulant with a v/v ratio of 70%, while those less than 70% do not meet the quality standard.
Motorcycle Tracking System Using Telegram Integrated Quectel L80 GPS Pri Hartini; Ibrahim Ibrahim; Reni Rahmadewi; Tiara Nurhuda
Sainteks: Jurnal Sain dan Teknik Vol 5 No 1 (2023): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i1.456

Abstract

Motorcycles are two-wheeled vehicles that are very common and widely used in Indonesia. At the same time, the criminal rate of motorcycle thieving also has the possibility to increase. The standard security system that motorcycles have is still ineffective. One solution to secure motorcycle from theft is adding a security system. The security system used in this research is a tracking system using a Quectel L80-R GPS connected to an ESP8266 NodeMCU which then installed on a motorcycle. The GPS then integrates with the Telegram application. Users can request the location of the motorcycle by pressing the button on the Chatbot that was previously created. Then the GPS will send a link containing the coordinates of the motorcycle location which can be opened via Google Maps. In this research, the location obtained from the GPS response is quite accurate with an average error distance of 3,06 meters in outdoor tests and 3,51 meters in indoor tests with each 30 trials in 3 different places. Thus, the tracking system using Quectel L80-R GPS can be used properly as a motorcycle security system and has been integrated with the Telegram application.
Comparative Analysis of Four Time-Series Models in an Effort to Determine The Optimal Forecasting Results Kiki Abdul Muluk; Anggit Suryopratomo
Sainteks: Jurnal Sain dan Teknik Vol 4 No 2 (2022): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v4i2.457

Abstract

Forecasting is one of the company's efforts, which is the decision making for the strategy carried out. A good company will predict the production of products that will be achieved, for the future and can help solve the problem of fluctuating conditions which generally often become a problem in the company. Forecasting demand (demand), is very helpful for companies to consider in carrying out the production process in the next several periods. Furthermore, to find out what method is suitable for the forecasting method, it is used by knowing the patterns and historical data. Accuracy in using the right forecasting method is expected to assist the company in determining the level of production in accordance with consumer demand in the future. Time-series models are methods that predict the future using historical data. Time-series models make the assumption that what happens in the future is a function of what has happened in the past. The advantage of time-series models is that they can see what has happened over a period of time and use a series of past data to make predictions. The application of the right and directed forecasting method can support the company to make optimal sales in order to achieve the maximum level of profit.

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