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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 6 Documents
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Search results for , issue "Vol 3 No 1 (2021): Maret" : 6 Documents clear
Sintesis Nitroselulosa Dari Serat Rami (Boechmerianivea) Menggunakan Trietilamin Riza Rizkiah; Kenny Kencanawati; Ahmad Rosidin; Lingga Wibowo
Sainteks: Jurnal Sain dan Teknik Vol 3 No 1 (2021): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v3i1.231

Abstract

Nitrocellulose is cellulose that is titrated into an ester polymer which can be used as a major component in several types of ammunition and explosives and other materials. Hemp (Boehmeria nivea) is a type of fiber plant that is rich in cellulose and thrives in Indonesia. Until now, the need for nitrocellulose in Indonesia is still imported, even though there is a lot of potential for cellulose that can be exploited, one of which is by synthesizing nitrocellulose from the hemp plant. One of the many uses of nitrocellulose derivatives, one of which is propellant. The propellant is the fuel or power source of a rocket engine. Nitrocellulose that can be used for propellants is nitrocellulose with levels between 11-13.3% nitrogen. This study aims to produce nitrocellulose in levels that meet the standards for making propellants. The study was carried out with a cellulose activation procedure using 20% ​​sodium hydroxide and 1 ml of triethylamine per gram of cellulose. Cellulose nitration was carried out using sulfuric acid and nitric acid with the composition of A (1: 1), B (2: 1) and C (3: 1) which were refluxed for 3 hours. Nitrogen determination was carried out using the Kjeldahl method. The results showed that from 3 samples A, B, and C, nitrogen levels were obtained respectively 12.62%, 13.23%, and 12.97%. This shows that the nitrocellulose from the hemp plant (Boehmeria nivea) can be used for propellants. Keywords: Hemp, nitrocellulose, nitration, triethylamine, propellant
Pengaruh Jumlah Putus Benang Terhadap Quality Control Jahitan di CV Batara Apparel Afriani Kusumadewi; Filly Pravitasari
Sainteks: Jurnal Sain dan Teknik Vol 3 No 1 (2021): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v3i1.295

Abstract

One of the problems that related to quality and often occurs in the sewing process at CV Batara Apparel is that there are frequent thread break problems. Termination problems that occur are caused by an error during the thread installation process that does not pass through the needle bar hole and the thread is directly passed through the needle. This results in defects in stitches such as broken stitches. In order to solve the thread break problem caused by an error during the thread installation process that does not pass through the needle bar hole, it can be overcome by implementing SOP (Standard Operational Procedure) on proper and correct machine usage procedures, briefing supervisors with the production manager so that the problems occurs when production takes place can be handled properly. In addition, the implementation of regular maintenance schedules can also solve the thread break problems that occur. Keywords: thread break, loose stitches, quality control, SOP
Pengaruh Penyetelan Squeezing Roll Pada Mesin Sizing Terhadap Kekuatan Benang Filly Pravitasari; Afriani Kusumadewi
Sainteks: Jurnal Sain dan Teknik Vol 3 No 1 (2021): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v3i1.296

Abstract

The process of applying starch to the warp yarn in order to increase the weaving power of the warp yarn in the presence of a starch layer, is expected to increase the strength of the yarn and reduce the yarn hairs. One of the factors that influence the sizing process is the amount of pressure in the squeezing roll. In this process, the sizing machine uses a double size box and each size box has 2 (two) squeezing rolls. The material used is Combed Ne 40 yarn with construction ,which is the amount of tetal or the density of the yarn with the construction included in the tetal of the dense warp yarn. The method used by comparing the pressure of squeezing roll process 1 and process 2. In the first process, the squeezing roll 1 is set at 3 kN and squeezing roll 2 is 3.5 kN, while in the second sizing process, the squeezing roll 1 is set at 4 kN and squeezing roll 2 for 5kN. After the experimental process was carried out, the starch warp yarn strength was obtained which was higher, namely 351.93gr and compared to process 2 which was 345.84 gr. The higher from the strength of the starchy yarn, can make it better for weaving process.
Model Penerimaan Pengguna untuk Aplikasi Mobile Virtual Hotel Operator Graha Prakarsa; Vani Maharani Nasution; Tombak Gapura Bhagya
Sainteks: Jurnal Sain dan Teknik Vol 3 No 1 (2021): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v3i1.304

Abstract

The growth of technology allows people today to easily book hotel rooms according to their own needs and desires, this is possible thanks to the Virtual Hotel Operator (VHO) application in Indonesia. Seeing this situation, we need a model that is able to measure the extent to which the level of acceptance of the VHO mobile application. It is necessary to know the factors that indirectly influence acceptance in the use of VHO applications by combining the Technology Acceptance Model (TAM) which is used as the basic model which is the aim of this study. The quantitative approach was used in this study, while the data collection technique was using questionnaires. The data analysis technique uses linear regression. This research concludes that the compatibility and trust variables have an indirect effect on the intention to use the VHO mobile application. Keywords: TAM, Compatibility, Trust, VHO
Faktor-faktor penunjang produk nano spray dengan metode factor analysis Ai Nurhayati
Sainteks: Jurnal Sain dan Teknik Vol 3 No 1 (2021): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v3i1.305

Abstract

This study aims to identify supporting factors in the selection of nano spray products. This study uses factor analysis method through SPSS statistics software. The results showed that there are two main factors that support nano spray products, namely tool and content factors. Keywords: Factor analysis, Nano spray, SPSS, Statistics
Evaluasi Kepuasan Konsumen Dalam Meningkatkan Pelayanan Dengan Menggunakan Metode Servqual dan Kano (Studi Kasus di PT.Daya) Dini Yulianti; Wawan Darmawan
Sainteks: Jurnal Sain dan Teknik Vol 3 No 1 (2021): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v3i1.311

Abstract

PT. Daya is one of the actors in the automotive and service sector that can maintain the quality of service to customer satisfaction where the business competition faced by companies increasingly requires company management to be more careful in determining marketing strategies in order to win increasingly competitive competition. At this time products in the form of services have become a fairly dominant part of its influence in the economy, in addition to physical queuing products where business competition faced by companies increasingly demands management to be more careful in determining strategies in order to win increasingly competitive competition. From the purpose of this study to find out or find the value of the results of the actual performance GAP attribute with customer expectations, so that it will be known how much the level of service satisfaction has been provided to customers and provide alternative solutions for improvement. The method used is the Service Quality and Kano methods. The results obtained in this study are Kano for the Indiffrent category, the highest score is from the respondent's results, and the lowest value is on reverse and one dimensional. Then in Service Quality (Servqual) there is the highest value on the value of the inadequate capacity of the workshop area, GAP 0.43 and Mechanics are not responsive to consumer willingness, the smallest value is GAP 0.00 for the Service Quality (Servqual) category.

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