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AL-ULUM: JURNAL SAINS DAN TEKNOLOGI
Published by Universitas Islam Kalimantan Muhammad Arsyad Al Banjari
ISSN : -     EISSN : 24774731     DOI : 10.31602
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Energy
Al Ulum: Jurnal Sains dan Teknologi = Al Ulum: Journal of Science and Technology (JST) is an international and open access journal with registered number ISSN 2477-4731 (Online). JST is a peer-reviewed journal published three times a year (April, August and December) by UPT Publication and Journal Management, Islamic University of Kalimantan. JST is intended to be the journal for publishing articles reporting the results of science and technology research. The JST invites manuscripts in the various topics of science and technology include natural sciences, engineering, computer science and technology, health and medical sciences, and agriculture.
Arjuna Subject : Umum - Umum
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 1 (2020)" : 5 Documents clear
KARAKTERISASI SPESIFIK DAN NON SPESIFIK SIMPLISIA DAUN KAWAU (Millettia sericea) Risa Supriningrum; Achmat Kadri Ansyori; Dewi Rahmasuari
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 6, No 1 (2020)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.64 KB) | DOI: 10.31602/ajst.v6i1.3657

Abstract

Empirically, kawao (Millettia sericea) leaves are used to treat fever and toothache. The development of medicinal plants into traditional medicines needs to be pursued. The first step that can be taken is characterization. Characterization is useful for knowing the quality of a simplicia, so that these results can be used as a reference for further research development. The research objective was to determine the specific and non-specific characteristics of kawao leaf simplicia. The research that was conducted was non-experimental research. The research stages included plant determination, manufacturing of simplicia, testing of specific and non-specific characteristics of simplicia. The results of the specific characterization of the macroscopic / organoleptic test showed that the leaves were elongated, dark green in color, had a distinctive smell (aromatic), bitter taste, pinnate leaf bone arrangement, tapered leaf tips, rounded leaf base, flat leaf edge, thick leaf flesh, leaf width 8 - 9.5 cm and 21 - 27 cm long. The simplicia powder is dark green, has a distinctive smell (aromatic) and has a bitter taste. Microscopic test showed that the identifier of simplicia consisted of vascular bundles, lower epidermis, anomocytic type stomata, hair covering and parenchyma. The average water soluble extract content was 35.5%, the ethanol soluble extract content was 10.5%, and the phytochemical screening results were positive for alkaloids, flavonoids, tannins, saponins and steroids. The non-specific characteristics of the water content averaged 6.75%, the total ash content was 4.28% on average, the acid insoluble ash content was 1.47% on average. Keywords: Millettia sericea leaves, specific characterization, non specific characterization
LIMBAH BATUBARA SEBAGAI BAHAN CAMPURAN PERBAIKAN LAPISAN TANAH DASAR DI KALIMANTAN SELATAN Yasruddin Yasruddin; Utami Sylvia Lestari; Akhmad Rifqy
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 6, No 1 (2020)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (375.864 KB) | DOI: 10.31602/ajst.v6i1.3658

Abstract

The coal waste that is generated from the steam power plant (PLTU) process can cause environmental pollution. The coal waste is then investigated to be used as a mixture to stabilize the subgrade of road construction for the South Kalimantan area. The purpose of this study was to determine the characteristic value of each combination of fly ash, bottom ash, and cement as a mixture of subgrade layer. The 5 combinations of fly ash, bottom ash, cement, and soil were used as a mixture of subgrade layer. This research used an experimental method through laboratory testing which included the Atterberg limit testing, specific gravity, sieve analysis, compaction and california bearing ratio. Furthermore, it was obtained the composition of fly ash, bottom ash, cement and soil that can be used for common  and selected embankments in highway construction for soft soils in South Kalimantan. Keywords: coal waste, subgrade, selected embankment, common embankment.
SINTESIS DAN KARAKTERISASI MAGNETIT (Fe3O4): STUDI KOMPARASI METODE KONVENSIONAL DAN METODE SONOKIMIA Maya Rahmayanti
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 6, No 1 (2020)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.984 KB) | DOI: 10.31602/ajst.v6i1.3659

Abstract

Magnetite (Fe3O4) is one of the iron oxide compounds which has strong magnetic properties so that it is widely modified with other materials for application in solid phase extraction. This study aims to compare the physical and chemical properties of magnetite synthesized by conventional methods and magnetite synthesized by sonochemical methods. The physical and chemical properties of magnetite were studied using Fourier Transform Infrared (FTIR) and X-Ray Difraction spectrophotometry. Magnetite saturation magnetization (Ms) was measured using a Vibrating Sample Magnetometer (VSM). The results of FTIR characterization showed that the absorption at a wave number of 780 cm-1 was a typical absorption of magnetite Fe-O bonds both on magnetite synthesized through sonochemical and conventional methods. The difference in crystallinity of magnetite synthesized by the two methods was not significant. The Ms magnetite value synthesized by sonochemical method was higher than the Ms magnetite value synthesized by conventional method. Keywords: magnetite, Fe3O4, synthesis, conventional, sonochemical
SELEKSI BEASISWA BIDIK MISI UNISKA MAB BANJARMASIN HIBAH LLDIKTI XI KALIMANTAN MENGGUNAKAN METODE SVM DAN TOPSIS Muhammad Iqbal Firdaus; M Gilvy Langgawan Putra
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 6, No 1 (2020)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (531.17 KB) | DOI: 10.31602/ajst.v6i1.3655

Abstract

Every year LLDIKTI XI Kalimantan provides scholarships to universities under its auspices. Which Uniska has received scholarships since 2015-2018 as many as 152 bidik misi students for new students. Which is usually selected using manual steps with the help of human power. From the selection process there are problems, namely human factors. Therefore we need a computational process that supports the selection process. Then the SVM (Support Vector Machine) method is used for the classification process and the TOPSIS (Technique For Order Preference By Similarity To Ideal Solution) method is used to give a priority ranking of scholarship. The average speed of the entire process in the selection system and recommendations for the acceptance of the UNISKA Bidik Misi scholarship with the implementation of the SVM and TOPSIS methods using testing from a comparison ratio of 19.12 seconds, the fastest time is 14.40 and the longest time is 23.58. The accuracy of the selection and recommendation of acceptance of the UNISKA Bidik Misi scholarship using the training data comparison ratio and 90%: 10% data testing has an average accuracy of 85.53% and testing based on the best parameters of the SVM sequential training process is λ (Lambda) = 0.1 , constant γ (gamma) = 0.05, ε = 0.0001, Maximum Iteration = 1000, ratio of 90%: 10% and value of d = 2, C (Complexity) = 1. So that the best accuracy is 100% and the average accuracy the best is 93.63%. Keywords: Selection, UNISKA MAB, SVM, TOPSIS, MCDM.
PENGOLAHAN NATA DE COCO MENGGUNAKAN SKIM DAN AIR KELAPA TANPA NITROGEN TAMBAHAN Cica Riyani
AL-ULUM: JURNAL SAINS DAN TEKNOLOGI Vol 6, No 1 (2020)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.674 KB) | DOI: 10.31602/ajst.v6i1.3656

Abstract

Nitrogen is an additional material used in the processing of nata de coco which functions as a protein provider for the formation and proliferation of bacterial cells which will affect the formed cellulose. The purpose of this study was to determine how to process nata de coco using skim and coconut water without adding a nitrogen source. The treatment tested in this study is a variety of substrates, namely coconut water subtrate (Sa), coconut water and coconut milk skim subtrate (Sb), and coconut milk skim subtrate (Sc). The treatments were arranged in a completely randomized design with three replications. Observations were made on the yield, weight and thickness of the nata. The results showed that the yield, weight, and thickness values of nata de coco were influenced by the treatment being tested. The best results were obtained from treatment (Sa) which resulted in a yield of 54.50%, nata weight of 600 grams, and thickness of 1.7 cm.Keywords : Nata de coco, coconut water, coconut milk skim, nitrogen free

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