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Aceh International Journal of Science and Technology
Published by Universitas Syiah Kuala
ISSN : 20889860     EISSN : 25032348     DOI : http://10.13170/aijst
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences
Aceh International Journal of Science & Technology (AIJST) is published by the Graduate School of Syiah Kuala University (PPs Unsyiah) and the Indonesian Soil Science Association (Himpunan Ilmu Tanah Indonesia, Komda Aceh). It is devoted to identifying, mapping, understanding, and interpreting new trends and patterns in science & technology development, especially within Asian countries as well as other parts of the world. The journal endeavors to highlight science & technology development from different perspectives. The aim is to promote broader dissemination of the results of scholarly endeavors into a broader subject of knowledge and practices and to establish effective communication among academic and research institutions, policymakers, government agencies, and persons concerned with the complex issue of science & technology development. The Journal is a peer-reviewed journal. The acceptance decision is made based upon an independent review process supported by rigorous processes and provides constructive and prompt evaluations of submitted manuscripts, ensuring that only intellectual and scholarly work of the greatest contribution and highest significance is published. The AIJST publishes original conceptual and research papers, review papers, technical reports, case studies, management reports, book reviews, research notes, and commentaries. It will occasionally come out with special issues devoted to important topics concerning science & technology development issues. Scopes Starting in 2016, AIJST has focused on science and engineering aspects, and therefore now AIJST considers the topics but not limited to : Engineering (Mechanical, Chemical, Civil, Transportation) Geology and Geomorphology Environmental Science (Hydrology, Pollution, Water Treatment, Soil Science, Climatology) Physical Oceanography Mathematics Physics and Geophysics Geospatial and Information Technology
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Global dan Perubahan Planet
Articles 5 Documents
 1 
Search results for , issue "Vol 7, No 3 (2018): December 2018" : 5 Documents clear
Effects of Drying Time on Yield and Moisture Content of “Sumahe” Powdered Drink Using Spray Dryer Ismiyati Ismiyati; Fatma Sari; Ratri Ariatmi Nugrahani; Anwar Ilmar Ramadhan
Aceh International Journal of Science and Technology Vol 7, No 3 (2018): December 2018
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.28 KB) | DOI: 10.13170/aijst.7.3.9620

Abstract

As people today are becoming more health-conscious, various efforts have been made to keep up one’s health, such as by consuming highly nutritious food and drinks. One of the nutritious food sources produced from bees is honey, bioactive compounds of polyphenols, glyoxal and methylglioxal. Honey could be used as a health drink by mixing with ginger. This health drink is also produced as powdered drink to simplify storing, reduce the use of plastic packaging, and to add product value to increase market share. The aim of this research was to analyze the effects of drying time for 5, 15, and 25 minutes with an addition of maltodextrin on the yield, density, and moisture content of “Sumahe” instant powdered drink, made from cow’s milk, honey, and ginger. The results showed that the longer the drying time, the lower the moisture content of the drink. Meanwhile, the longer the drying time, the higher the yield became. A taste test of “Sumahe” also indicated that from 25 minutes of drying time, most of the panelists rated the drink as tasteful and delicious.
Analysis of Digital Divide in Mastery of ICT in Palangka Raya City Purmasari Purmasari Purmasari; Djoko Budiyanto Setyohadi; Albertus Joko Santoso
Aceh International Journal of Science and Technology Vol 7, No 3 (2018): December 2018
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (484.476 KB) | DOI: 10.13170/aijst.7.3.10854

Abstract

This study aims to measure the digital divide by analyzing the influencing factors of the divide (gap) and the effectiveness of ICT public services in Palangka Raya City. The method used for measuring the digital divide in this study was the SIBIS method, the result of the activities of the European Commission which is used for analyzing and comparing different indicators and adapted to environmental conditions. The SIBIS GPS (General Population Survey) indicator was used in this study included the availability of ICT access, ICT utilization, and levels of ICT and e-government capability. The population in this study was the people of Palangka Raya City with a sample of 399 respondents. The results of digital divide measurement in this study showed that the level of digital divide as seen from the aspects of access availability, utilization and level of ICT capability was at medium category, the level of digital divide as seen from the aspect of e-government was in low category, and the level of digital divide as seen from the aspect of demography showed a clear distinction to the digital divide in Palangka Raya City
Atmospheric Pollutant Flow and Precipitation: Modeling Effects on the Vegetation Ecosystem Allag Fateh; Saddek Bouharati; Lamri Tedjar; Mohamed Fenni
Aceh International Journal of Science and Technology Vol 7, No 3 (2018): December 2018
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.555 KB) | DOI: 10.24815/jacps.v%vi%i.11327

Abstract

Because of their fixed life and wide distribution, plants are the first victims of air pollution. The atmosphere is considered polluted when the increase of the rate of certain components causes harmful effects on the different constituents of the ecosystems. The study of the flow of air near a polluting source (cement plant in our case), allows to predict its impact on the surrounding plant ecosystem. Different factors are to be considered. The chemical composition of the air, the climatic conditions, and the impacted plant species are complex parameters to be analyzed using conventional mathematical methods. In this study, we propose a system based on artificial neural networks. Since artificial neural networks have the capacity to treat different complex parameters, their application in this domain is adequate. The proposed system makes it possible to match the input and output spaces. The variables that constitute the input space are the chemical composition, the concentration of the latter in the rainwater, their duration of deposition on the leaves and stems, the climatic conditions characterizing the environment, as well as the species of plant studied. The output variable expresses the rate of degradation of this species under the effect of pollution. Learning the system makes it possible to establish the transfer function and thus predict the impact of pollutants on the vegetation.
Liquefaction Assessment Using the CPT and Accounting for Soil Ageing Bambang Setiawan; Mark Jaksa
Aceh International Journal of Science and Technology Vol 7, No 3 (2018): December 2018
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (704.561 KB) | DOI: 10.13170/aijst.7.3.11544

Abstract

Due to its continuous data recording capability, excellent repeatability and accuracy, relatively low cost and simplicity of operation, the cone penetration test (CPT) offers enhanced liquefaction assessment over its predecessor the standard penetration test (SPT). However, soil ageing, which influences the cyclic resistance ratio (CRR), is difficult, if not impossible, to be detected by the CPT due to disturbance during the test. This situation may lead to excessively conservative estimation of CRR values which result in conservative assessment of liquefaction potential. This paper presents and discusses liquefaction assessment using the CPT and methods for accounting for soil ageing. A field study, conducted at Gillman, South Australia, is presented and the study site is assessed for liquefaction potential. This paper also explores the influence of soil ageing on the subsequent liquefaction assessment.
Development Chitosan-based forward Osmosis Membranes for Emergency Drinking Water Supply Saiful Saiful; Ulfa Riana; Marlina Marlina; Muliadi Ramli; Nizar Mahmud
Aceh International Journal of Science and Technology Vol 7, No 3 (2018): December 2018
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (586.705 KB) | DOI: 10.13170/aijst.7.3.11780

Abstract

Development of forward osmosis (FO) membranes became one of the alternative methods for drinking water supply in an emergency. In this research, drinking water bags based on FO membrane  have been developed using chitosan as the basic material of membrane. The chitosan membrane used for the manufacture of drinking water bags has a thickness of 0.043 mm, 30.3% porosity, tensile strength 28.83 kgf / mm2, swelling degree 43.5% and elongation of 7.16%. Drinking water bags are made with a combination of Polypropylene Plastic (PP) and aluminum foil with FO membrane inside. This drinking water bag can be applied for brackish water purification to be energy drinking water as one of the solutions for the drinking water supply in emergencies. FO process testing is done by using variation of sugar solution as the draw solution, that are glucose, fructose, sucrose and mixture. The concentration of applied draw solution is 1, 2 and 3M within 1 hour treatment. The highest water flux was obtained in 3M sucrose solution with a flux value of 5.25 L/m2hour. The results of drinking water quality parameters  analysis  in the form of pH, Total Dissolve Solid (TDS), salinity, conductivity, heavy metals and Escherichia coli (E. coli) contents showed that the FO water produc meets drinking water quality standards based on  Indonesian government regulation of drinking water quality. FO-membrane-based drinking water bags are potentially used as an alternative solution for the energy drinking water supply in an emergency.

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