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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 145 Documents
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Pengaruh Taut Silang Natrium Tripolifosfat Dengan Kitosan Terhadap Sifat Fisis Chitosan Edible Film Sebagai Drug Delivery System Mutiara Putri Utami Susanto
Sainteks: Jurnal Sain dan Teknik Vol 1 No 2 (2019): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v1i2.131

Abstract

Chitosan extracted from shrimp waste has been used as material for making edible film. Chitosan edible film can be applied as a medium for drug delivery system. For example, the sample of antibiotic drug used was salicylic acid. To control the characteristics of edible film and drug release, crosslinking need to be added in the making of edible film of chitosan with STPP as crosslinker. This study aims the effect of crosslinker STPP to the physical properties from chitosan edible film (CEF). The experiment methods consisted of three main processes : (1) preparing of CEF with variations of STPP (0; 0.05; 0.1; 0.2% m STPP / V solution), (2). Analizing physical properties of CEF are tensile strength, percent elongation of break, and swelling. Physical properties of CEF were measured for tensile strength, percent elongation of break, and percent of swelling. The results that the addition of STPP affect the physical characteristics of the CEF. As the addition of STTP was increased, the tensile strength increased , percentage of elongation decreased, and swelling decreased.
Analisis Faktor-faktor Penerimaan Konsumen Pada Aplikasi E-Marketplace Lazada Menggunakan TAM Graha Prakarsa
Sainteks: Jurnal Sain dan Teknik Vol 1 No 2 (2019): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v1i2.132

Abstract

The increasing number of buying and selling transactions through e-marketplaces today causes the need for a model that is able to measure the extent of acceptance of e-marketplace applications. The existence of a model of measuring e-marketplace acceptance will greatly help business people in that field in order to improve the performance of the service products it offers, which in this study is Lazada. This research was conducted to find out how far the user acceptance of Lazada e-marketplace applications using the Technology Acceptance Model (TAM). The approach on this research is using quantitative approach with a survey method. Data collection techniques were carried out using questionnaires that were randomly distributed to Lazada e-marketplace users. The data analysis method used is descriptive analysis using multiple linear regression data analysis techniques. The results showed that content richness, security and perceived ease of use variables had a significant effect on the perceived of usefulness variable, security variables had a significant effect on perceived usefulness variables, perceived usefulness variables, perceived ease of use and security had a significant effect on the variables customers intention to use.
Pengetahuan Lokal Masyarakat Dataran Rendah Cianjur Selatan Dalam Pemanfaatan Sumber Daya Air Silmi Syahidah
Sainteks: Jurnal Sain dan Teknik Vol 2 No 1 (2020): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i1.175

Abstract

Water is a basic necessity for people's daily lives. Each region has a local knowledge about water resources that keeps their needs met. This research explains how people in hilly lowland areas with the rivers under agricultural land can survive with their traditional knowledge. The study was conducted in Karangwangi Village, South Cianjur. Research studies have focused on different types of water sources and and utilization by the local people. The research method used was mixed-method with observational data collection techniques, semi-structured interviews and structured interviews. Based on information from the community, the water source in Karangwangi Village is not only a wahangan but also hulu cai, sirah cai, cai nyusu, wells, solokan, situ, balong and cai hujan. All of these water sources in ancient times can be used for all needs such as ibak, nyeuseuh, nginum, cooking, agriculture, fisheries. How to use it is done traditionally by using bamboo, timba, bucket. Quality and quantity of river water changes every season and the use of pesticides makes people sort water sources depend on their needs.Keywords :traditional knowledge, management water resource, water etnoecology
Perancangan Instrumen Kepuasan Kerja Dosen Di Perguruan Tinggi Z Rahmi Rismayani Deri; Iwan Satriyo Nugroho
Sainteks: Jurnal Sain dan Teknik Vol 2 No 1 (2020): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i1.185

Abstract

Higher education is a service industry, therefore it must be able to provide excellent service. Therefore one of the lecturers’ job satisfaction must be considered. Lecturers who feel job satisfaction will work optimally. InHigher Education Z, it was found that there was an indication of the dissatisfaction of the lecturers’ work, therefore the purpose of this study was to design an Instrumenr of Lecturer performance satisfaction in Higher Education, to find out how high the level of job satisfaction was, and to identify variables from aspects that were not yet optimal Z. The method used is descriptive quantitative. The results of the analysis of the validity test, the value oh the item correlation of each variable, namely form Work, Salary and Wages, promotion Opportunities, Supervision, Co-Workers and Working Conditions by using the formula product moment r value result from 6 variables> r table (0,286) so that the design the job satisfaction instrumrnt is valid. Cronbachs Alpha value reliability test obtained Cronbach’s Alpha value greater than the critical value of (0.60). Then it can be concluded thet the items of the research instrument are reliable. Keywords : Design, Instrument, Job Satisfaction
Pengaruh Suhu dan Waktu terhadap Yield dan Kemurnian Pupuk K2SO4 dari Abu Kulit Buah Kapuk dan Gipsum Galu Murdikaningrum; kenny kencanawati
Sainteks: Jurnal Sain dan Teknik Vol 2 No 1 (2020): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i1.219

Abstract

Indonesia is one of the largest agricultural countries in the world, with the majority of the population working as farmers. Theagricultural industry certainly needs fertilizer to maintain quality, accelerate growth and provide nutrients for plants to grow well. To provide cheap potassium sulphate fertilizer, we conducted a study on "The Effect of Temperature and Time on Yield andPurity K2SO4Fertilizer from gypsum and Ash Bark" as an alternative to commercially available ZK fertilizers. The reason we usedash bark was because it was a waste from cottonwood industry. This study used a single stage methodwhere in this method the final result was not recycled to save time.The variables used are temperature (60oC, 70oC, 80oC) and time (60, 90, 120 minutes). The results showed that the most K2SO4crystals were formed at 80oC for 120 minutes with potassium concentrations of 69.60%.Keywords: potassium sulphate fertilizer, single
Pengaruh Konsentrasi Senyawa Dihidroksi Etilena Urea (Akrofik NZK) Pada Proses Finishing Kain Kapas 100% Dengan Metode Pemanas Awetan Suhu Rendah (Low Curing) Terhadap Stabilitas Dimensi, Kekuatan Sobek Dan Kekuatan Tarik Luciana Laksmi; Riza Rizkiah
Sainteks: Jurnal Sain dan Teknik Vol 2 No 1 (2020): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i1.220

Abstract

The process of producing uniforms or shirts made of 100% cotton which has a pattern of weaving or printing is very much in demand, especially in Indonesia with a tropical climate which is suitable for wearing clothes made from cotton. The need for 100% cotton fabric needs both domestically and abroad made the textile companies intensely innovate because of the connection with the quality of the cotton fabric to meet market standards and in accordance with consumer desires. There are several factors that usually affect the quality of a fabric, including dimensional stability, tensile strength and tensile strength. Anti-creasing enhancements are a form of resin refinement application intended to improve the wrinkle-resistant properties of cellulose fabrics. The purpose of this study was to determine the optimum conditions that can be achieved from the addition of anti-tangle resin substances (Acrylics NZK) to the physical properties of the fabric. The resin used was an anti-creasing resin with the trade name Ackfik NZK (Dihydroxy Ethylene Urea) using a temperature of low heating (Curing 130 C) and a concentration variation of 80, 90. 100,110 g / l. The results showed the optimum conditions achieved in this experiment were the concentration of anti-creasing agent 100g / l with a heating temperature of 130 C obtained a formaldehyde-free content of 55.80 ppm, dimensional stability of 3.2% wariness of 2.4% warp and towards the feed , tear strength of 0.640 kg of cloth towards the warp of 0.625 kg in the direction of feed, Pull strength of fabric 24.43 kg in the direction of warp 11.86 kg in the direction of feed.
Penggunaan Amonium Hidroksida Pada Pencelupan Benang Wol Dengan Zat Warna Reaktif Fenny Nurherawati
Sainteks: Jurnal Sain dan Teknik Vol 2 No 1 (2020): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i1.221

Abstract

Dyeingof wool yarn with reactive dyes is affected byfixation process with ammonium hydroxide, because it can produce good color fastness properties. The purpose of this study was to determine the effect of fixation process on wool yarn dyeing usingexhaust method withreactive dyes (Lanasol Red B), by experimenting with varying ammonium hydroxide concentrations of 3%, 4%, 5% and 6% and fixation time of 10, 20, 30 and 40 minutes. Tests carried out on color strength, colorfastness torubbing, colorfastness towashing and tensile strength of wool yarn. The resultsof experiments and tests show that the higher the use of ammonium hydroxide concentrations up to 5% and the fixation time of 20 minutes, the color strength, color fastness to rubbing and color fastness to washing increase, but using higher ammonium hydroxide concentrations and fixation time caused color strength,color fastness to rubbing, color fastness towashing and the tensile strength of wool yarnvalues relatively decreased.
ANALISA ERGONOMI MAKRO PADA PENGGUNAAN TELEPON GENGGAM (HANDPHONE) DIKALANGAN MAHASISWA BANDUNG Kiki Abdul Muluk
Sainteks: Jurnal Sain dan Teknik Vol 2 No 1 (2020): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i1.223

Abstract

Along with the rapid development of digital technology, electronic technology which is the forerunner of information and communication technology, has been spurred on by developing miniaturization of electronic components, through the creation of integrated circuits, which at its peak gave birth to communication devices in the form of mobile phones (Cellphones / Cellphones). In its use based on macro ergonomics analysis, cell phone use is hindered by these students, giving positive and negative influences. towards its users. In this study a macro ergonomic analysis was carried out on the use of mobile phones among students, especially students of Industrial Engineering courses, Faculty of Engineering, Bandung Raya University. The purpose of this study is to analyze the positive and negative effects on the use of mobile phones among students in terms of macro ergonomics, related to the use of mobile applications in the learning process with the development of Mobile Learning through the SIAKAD and Edlink programs, and their use in relationships in the campus environment. . The research was conducted with a survey research method approach with a quantitative approach. Data obtained from the results of questionnaires that research in the field, interviews and literature studies. The results of the study showed that the results of the questionnaire test showed that the questionnaire had a level of validity of 85% and 89.6%. The results based on macro ergonomic analysis of the positive effect felt by students, in essence, is that mobile phones are very helpful in various learning process activities, academic activities and other activities in the campus environment, which is currently being promoted by the online system. The negative influence of mobile phones among students, is more on the problem of changing attitudes and behaviors of students which leads to consumptive attitudes, lazy to read text books, tend to reduce direct social interaction and less concern for the surrounding environment.
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
Pemakaian Natrium Karbonat Pada Pencapan Alkali-Discharge dengan Zat Warna Dispersi pada Kain Poliester Luciana Luciana
Sainteks: Jurnal Sain dan Teknik Vol 2 No 2 (2020): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v2i2.240

Abstract

Polyester fabrics are the most popular clothing material in the textile product manufacturing process and are widely used. Small floral motifs, line or small dots that are sharp and bright (more than one color) on the basis of contrasting or dark colors usually obtained by discharge printing or resist printing, because it is not easy to do by direct printing in a large amount of production. In printing alkali discharge, polyester fabrics are used dispersion dyes that can be damaged by alkali (azo type) as the base color. Color motifs are used dispersion dyes that are resistant to alkalis (anthraquinone type) which do not have ester groups in their chromophore. The purpose of this study was to determine the extent to the influence of the concentration of using sodium carbonate 100, 150, 200, 250 g/kg paste as etching agent and fixation time 4,6,8 minutes temperature 180 °C, then testing the degree of fabric white, color difference, fabric tensile strength and color fastness against washing and rubbing. The optimum conditions were achieved in sodium carbonate 200 g/kg paste, temperature 180 °C for 6 minutes, white degree of fabric Δ K/S 0.01684, color difference value Δ E= 2,81, fabric tensile strength of 17,40 kg towards warp 18,05 kg towards the feed, fastness to washing 4-5, color fastness to wet rubbing and dry rubbing 4-5. Keywords : sodium carbonate, discharge printing, azo, anthraquinone, polyester

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