Artikel (34)
Carbon nano spheres derived from Allium cepa were synthesized at different temperatures in a one-step pyrolysis process for supercapacitor electrodes. Obtained carbon nano spheres were analyzed using SEM, FTIR, BET and XRD. The nano materials were fabricated into conducting electrodes for cyclic vol...
Journal of Engineering and Scientific Research; Vol. 1 No. 1 (2019); 25-32 | 2020
An experimental investigation was conducted to evaluate the performance of an indirect injection (IDI) diesel engine using diesel(D100) and diesel-biodiesel blends (BD25, BD45, BD65) separately. The engine was run in various engine loads at constant engine speed ranging from 1000 to 2400 rpm with an...
Journal of Engineering and Scientific Research; Vol. 1 No. 1 (2019); 17-24 | 2020
Scaffold is a 3-dimensional matrix created as a new bone cell growth medium made from natural polymers and bioceramics. The extracted pectin from green Cincau leaves (Premna oblongifolia Merr) and hydroxyapatite (HA) are used in the manufacture of scaffolds. Pectin was extracted using citric acid wi...
Journal of Engineering and Scientific Research; Vol. 1 No. 1 (2019); 12-16 | 2020
West Sumatra is one of a geothermal potential in Indonesia because of interaction between Eurasian and Indo-Australian tectonic. The existence of volcanoes produces geothermal potential with lithology andesite, tuff, and lapilli lava in the Marapi Mountain complex, which elongated at NW-SE direction...
Journal of Engineering and Scientific Research; Vol. 2 No. 2 (2020); 90 - 96 | 2020
This research is an experiment of categorizing visual abilities by representations of a solving problem through class experiment. The research is to investigate, explore, and enhance geometry thinking in solving mathematics problems presented visually. The tasks are cognitive strategies that rely on...
Journal of Engineering and Scientific Research; Vol. 2 No. 1 (2020); 58–63 | 2020
The identification of shallow groundwater aquifers is demanded to sustain the balance of utilization in agriculture and anticipate frictions that can occur due to the overlapping usage of groundwater resources. This study is aimed to identify the potential of groundwater resources based on the thick...
Journal of Engineering and Scientific Research; Vol. 2 No. 1 (2020); 44-52 | 2020
The purpose of this study is to map out the value chain of cassava (Manihot esculeta) and to measure the extent to which the cassava commodity in Toba Samosir Regency, North Sumatera, Indonesia, could affect the economics of the relevant stakeholders. This study employed the value chain mapping anal...
Journal of Engineering and Scientific Research; Vol. 2 No. 1 (2020); 39-43 | 2020
The use of Electronic Health Records (EHR) in healthcare has the potential of reducing medical errors, minimizing healthcare cost and significantly improving the healthcare service quality. However, there is a barrier in healthcare data and information exchange between various healthcare systems due...
Journal of Engineering and Scientific Research; Vol. 2 No. 1 (2020); 31-38 | 2020
This paper discusses web-based applications in the agricultural and food crops sectors in North Aceh district, Aceh Province, Indonesia. The agricultural and food crops sector is a mainstay sector of the people of North Aceh and local governments to move the economy and income of the local community...
Journal of Engineering and Scientific Research; Vol. 2 No. 1 (2020); 25-30 | 2020
To support Indonesian’s food self-sufficiency program, more quantitative and accurate data are required on the character of soil data needed, which can be more easily understood, practical and suitable for crop selection as well as for the right fertilizer recommendations to support the agribusine...
Journal of Engineering and Scientific Research; Vol. 2 No. 1 (2020); 16-24 | 2020