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Jurnal Jejaring Matematika dan Sains
Published by Universitas Palangka Raya
ISSN : -     EISSN : 26861658     DOI : -
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
Jurnal Jejaring Matematika dan Sains dikelola oleh Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Palangka Raya Dengan e-ISSN 2686-1658, merupakan wadah bagi peneliti yang bergerak dibidang Sains khususnya Fisika, Kimia dan Biologi serta penelitian di bidang Matematika untuk dapat mempublikasikan hasil penelitian yang telah dilakukan. Fokus utama dalam jurnal ini adalah pengelolaan serta pemanfaatan potensi lokal khususnya di daerah Kalimantan untuk berbagai terapan dalam menjawab permasalahan masyarakat serta berkontribusi dalam perkembangan ilmu pengetahuan. Jurnal Jejaring Matematika dan Sains bersifat Open Access terbit setiap 6 bulan sekali dengan 8 artikel setiap terbitannya.
Arjuna Subject : Umum - Umum
Articles 72 Documents
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Pemurnian Gliserol Miftahul Khairati
Jurnal Jejaring Matematika dan Sains Vol. 4 No. 2 (2022): Vol. 4 No. 2 (2022): Edisi Desember 2022
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2022.v4.i2.706

Abstract

Glycerol is an alcoholic trihydrate which is hygroscopic. Glycerol can be obtained in several ways, namely hydrolysis of triglycerides to produce fatty acids and glycerol, saponification reactions of oils with alkaline bases to form alkali salts and glycerol, and trans-esterification reactions with alcohols to produce alkyl esters and glycerol. The glycerol obtained from the by-product of the reaction still contains a lot of impurities, so it needs to be purified so that the glycerol produced has a higher value. There are several ways to purify glycerol, including the acidification, which is adding strong acid to crude glycerol to bind the remaining base from the glycerol, the adsorption, which is the removal of impurities in the glycerol, and the distillation to evaporate the remaining methanol and water in the glycerol.
Studi Kinetika Kimia Pada Reaksi Saponifikasi Etil Asetat Dengan Metode Titrasi dan Konduktometri: Chemical Kinetic Study on Saponification Reaction of Ethyl Acetate Using Titration and Conductometric Methods Pasaribu, Marvin Horale
Jurnal Jejaring Matematika dan Sains Vol. 4 No. 2 (2022): Vol. 4 No. 2 (2022): Edisi Desember 2022
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2022.v4.i2.710

Abstract

A chemical kinetics study on the saponification reaction of ethyl acetate by comparison of titration and conductometry methods has been conducted. First, though, this study started by reacting ethyl acetate with NaOH with a volume ratio of 2: 3 and was kept at a constant temperature of 35oC. The process of determining the order and rate constant of saponification reaction of ethyl acetate by hydroxide ions was carried out by comparing the analysis results with titration and conductometry methods with time variations of 5, 10, 15, 25, 40, and 60 minutes. The study's results proved that the saponification reaction follows the kinetics of the 2nd order reaction. It is supported by the analysis results using both analysis methods at time variations and obtaining a linear line graph with a positive gradient and an R2 value of 0.9757 and 0.9955, respectively, where both values are close to 1. Based on the titration method, the reaction rate (k) rated ethyl acetate saponification obtained a yield of 3.2375 M-1.min-1, while by the conductometry method, the rated value of the reaction rate obtained was 13.1973 M-1.min-1.
The Development of Zeolite as Potential Natural Catalyst : The Development of Zeolite as Potential Natural Catalyst Dongoran, Junita; Sulistiawati, Putri; Simangunsong, Sri Yulandari; Paksi, Pandu Gizta Rapi; Pasaribu, Marvin Horale
Jurnal Jejaring Matematika dan Sains Vol. 3 No. 2 (2021): Vol. 3 No. 2 (2021): Edisi Desember 2021
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2021.v3.i2.604

Abstract

Zeolite is a hydrated aluminosilicate mineral (solid) in which silicate ions (SiO44-) and tetrahedral alumina (AlO45-) combine to form a porous/hollow and negatively charged crystal structure. Natural zeolite can be isolated from several sources, such as volcanic ash, sand, rocks, and rice husks, to industrial organic waste. Zeolite catalysts can be synthesized through various methods such as sol-gel, hydrothermal, ionothermal, and alkaline fusion. The purpose of modifying zeolite catalyst material is to improve its catalytic capabilities and physical and chemical properties, which can be done by various methods, including sol-gel, hydrothermal, ionothermal, and alkaline fusion. The use of zeolite-based catalysts and their derivatives has been widely used in various chemical reactions and industries such as isomerization processes, molecular cracking, to the manufacture of biodiesel. The conclusion is that zeolite is a widely developed material because of its abundant quantity in nature, and it is relatively cheaper and can be modified so that it can be used in various chemical reactions.
Perancangan Vaksin Berbasis Epitop Sel B Untuk Penyakit Hepatitis B: B CELL EPITOP BASED VACCINE DESIGN FOR HEPATITIS B DISEASE Toepak, Erwin Prasetya; Rey Kamala Dewi
Jurnal Jejaring Matematika dan Sains Vol. 3 No. 2 (2021): Vol. 3 No. 2 (2021): Edisi Desember 2021
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2021.v3.i2.602

Abstract

Hepatitis B is a type of disease caused by infection with the hepatitis virus (HBV). HBV is a virus in the Hepadnaviridae family. This viral infection can cause clumping of liver cells, such as cirrhosis and hepatocellular carcinoma which if left untreated can lead to death. HBV itself has a non-structural protein polymerase that plays an important role in its life cycle. This in silico method is economical and effective for the discovery of new drugs by utilizing computer capabilities. In this study, the design of an epitope B-based vaccine from the HBV polymerase will be carried out. Hepatitis B polymerase sequences were obtained from the NCBI database site and then tested for antigenicity with the Vaxijen server. The results of the hepatitis B protein sequence antigenity test have a protective antigen value of 0.5783 so it is possible to use it as a vaccine candidate.
Perancangan Vaksin 3H5S HVC Sederhana Secara In Silico: Simple In Silico 3H5S Vaccine Design Jumiati; Toepak, Erwin Prasetya
Jurnal Jejaring Matematika dan Sains Vol. 3 No. 2 (2021): Vol. 3 No. 2 (2021): Edisi Desember 2021
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2022.v3.i2.605

Abstract

In silico test is a term used for experiments or tests carried out using computer simulation methods. HCV is a flavivirus. The hepatitis C genome is a 9.6 kb single-stranded RNA molecule that serves as a template for translation and replication. In this study, the HVC 3H5S protein sequence was searched with NCBI and B cell epitope prediction using the BepiPred method. After all the steps have been carried out, the results of the observations are obtained. The first is in the HVC 3H5S protein sequence search stage, the threshold value and overall prediction for the Protecting Antigen are obtained, the threshold value is 0.4 and the overall prediction for the Protecting Antigen is 0.4816 (probable antigen). And based on the prediction results of B cell epitopes, data related to the sequence name, initial position, final position, and score of the epitope were obtained. The protein sequence obtained from the data consists of a sequence of letters, each letter is the code of an amino acid. All protein sequences are made in FASTA format to make it easier to use in software or servers. The prediction results of B cell epitopes using the BepiPred server produce several epitope sequences that are equipped with their binding specificity scores. The predicted results of the B cell epitopes obtained display the positions of the epitopes that describe the level of recognition of the B cell epitopes or binding with antibodies so that in determining the vaccine sequence later, the predicted epitopes are selected based on their level of accessibility.
Pembuatan Tapai Ketan Putih: Making White Glutinous Tapai Sitorus, Raya Uli; Toepak, Erwin Prasetya
Jurnal Jejaring Matematika dan Sains Vol. 4 No. 2 (2022): Vol. 4 No. 2 (2022): Edisi Desember 2022
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2022.v4.i2.709

Abstract

Glutinous tapai has a sweet and slightly sour taste and a distinctive taste because it contains alcohol, besides that the texture will be softer. Traditionally it takes 3-4 days to make white sticky rice tapai so that the tapai is sweet and soft. In the process of fermenting sticky rice will produce alcohol and CO2 (Carbon dioxide). White glutinous rice contains the most carbohydrates (79.40 g per 100 g of material) when compared to carbohydrates in cassava (34.7 g per 100 g of material. The greater the amount of glucose contained in an ingredient, the higher the amount of ethanol produced from the breakdown of glucose by the high amount of yeast (Saccharomyces cereviceae) in the tape that is made. . According to the results tapai has a slightly sweet taste with a slight alcoholic taste and a distinctive fragrant aroma. The texture is soft and watery and produces liquid which is the effect of the effect fermentation. Because the sweet taste of tapai is influenced by the sugar content of the tapai itself. The changes that occur are generally in accordance with the existing theory, the results of tapai are not optimal because the tapai still has a rather hard texture and does not have much water and taste which is not too sweet. This is because the fermentation time is short, which is only 3 days, and "the 3rd day of fermentation obtained low microorganism growth and the highest growth and height of microorganisms was the 9 day fermentation time"..
Virus H1N1 Neuraminidase Secara Sederhana Dengan Pendekatan In-Silico: Neuraminidase H1N1 Virus Vaccine Design In A Simplified In-Silico Approach Elfrida Roulina Simanjuntak; Toepak, Erwin Prasetya
Jurnal Jejaring Matematika dan Sains Vol. 3 No. 2 (2021): Vol. 3 No. 2 (2021): Edisi Desember 2021
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2021.v2.i2.603

Abstract

In Indonesia in 2019 a case of H1N1 infection was reported in North Sumatra. This virus is a single stranded-ribonucleid acid (ss-RNA) virus with a diameter of 80-120 nm and a length of 200-300 nm, has an envelope with a lipid bilayer and is surrounded by about 500 glycoprotein spikes that have hemagglutination (HA) and neuraminidase (NA) enzymes. ). Neuraminidase is an enzyme whose job is to carry out atixialolytic enzyme activity, releasing viral progeny trapped on the surface of infected cells when they are released and facilitating the movement of the virus in the mucous membrane of the target epithelial tissue. attachment of viruses to targets of interest to antiviral drugs. The in-silico method is one of the research studies in a computational-based biology. This method of analysis is used to identify a chemical property in a chemical compound. In the extraction of neuraminidase H1N1 protein sequences (swine virus) from NCBI, there were 469 AA proteins obtained in-silico. The antigenity test using a web vaccine on the NA protein of the H1N1 virus, with a holding value of 0.4 which is the final result of protein residues, indicates that the overall probability is estimated to be antigen with 0.4982.
Pengaruh Ukuran Partikel Serbuk Kalsium Oksida (CaO) Sebagai Adsorben Untuk Meningkatkan Kadar Etanol Teknis: Pengaruh Ukuran Partikel Serbuk Kalsium Oksida (CaO) Sebagai Adsorben Untuk Meningkatkan Kadar Etanol Teknis Lamuru, Afrianti S; Mahirullah; Juita , Sri
Jurnal Jejaring Matematika dan Sains Vol. 5 No. 1 (2023): Jurnal Jejaring Matematika dan Sains
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2023.v5.i1.801

Abstract

The research studied method of increasing technical alcohol levels by using Calcium Oxide (CaO) adsorbent in adsorption distillation. Alcohol can be used as an alternative fuel or fuel additive to increase the octane number of the fuel so as to produce low carbon emissions. So, it is very important alcohol purification. One method for purifying alcohol is adsorption distillation. The purpose of this study was to determine the effect of the particle size of CaO adsorbent powder in the adsorption distillation method. The ethanol used as feed is ethanol of 70% and 96%. The results showed the increase in ethanol content with a particle size of 100 mesh, 150 mesh and 200 mesh, the highest final ethanol content was obtained at a particle size of 200 mesh, where at an initial concentration of 70% ethanol after the adsorption process increased to 88.50%, while the ethanol content the lowest was obtained at 100 mesh with a final content of 87%. Likewise, the initial concentration of 96% ethanol after the adsorption process increased to 98.25% at a particle size of 200 mesh, while the lowest concentration was obtained at a particle size of 100 mesh with a final grade of 97.90%. From the results of the study showed that particle size greatly influences the increase in ethanol content. The smaller the particle size used, the greater the adsorption speed. The smaller the particle size, the greater the surface area, so that more water is absorbed and the resulting ethanol concentration is greater.
Pengaruh Pencampuran Alginat Dan Serbuk Kalsium Oksida (CaO) Adsorben Untuk Peningkatan Kadar Alkohol Teknis Pada Metode Destilasi-Adsorpsi: Pengaruh Pencampuran Alginat Dan Serbuk Kalsium Oksida (CaO) Adsorben Untuk Peningkatan Kadar Alkohol Teknis Pada Metode Destilasi-Adsorpsi Mahirullah, Mahirullah; Lamuru, Afrianti S; Ningsih, Nining Widiana; Arifin
Jurnal Jejaring Matematika dan Sains Vol. 5 No. 1 (2023): Jurnal Jejaring Matematika dan Sains
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2023.v5.i1.802

Abstract

This study examines the effect of adding alginate to Calcium Oxide (CaO) powder as an adsorbent pallets in the process of increasing the alcohol levels using the adsorption distillation method. The adsorption distillation method is one of the methods that can be used in alcohol purification. Pure alcohol can be used as an alternative fuel or as an additive in fuel so that it can increase the octane number and produce environmentally friendly exhaust gases. The purpose of this study was to determine the effect of varying alginate concentrations on mixing calcium oxide (CaO) powder to increase technical ethanol content. Alginate concentrations used were 1%, 1.5%, 2%, 2.5% and 3%. The feed ethanol used is 70% and 96% ethanol. The results showed that the optimum concentration of alginate mixed with Calcium Oxide (CaO) powder to become an adsorbent to increase the ethanol content was 2.5%, which increased the ethanol content from 70% to 89% and from 96% to 98.25%. The pore volume of the adsorbent with the addition of 2.5% alginate was 0.89 ml. The ipenelotian results show that the effect of adding alginate to calcium oxide powder can affect the pore density of the alginate gel on calcium oxide powder. The pore density will affect the pore volume of the adsorbent. The increase in pore volume indicates that more adsorbent pores are formed. The more the number of pores in the adsorbent, the ability of the adsorbent to absorb water increases.
Evaluasi Penggunaan Obat di Pusat Kesehatan Masyarakat “X” di Kalimantan Selatan di Tinjau dari Indikator Peresepan Menurut World Health Organization Saputera, Mochammad Maulidie Alfiannor; Sari, Anna Khumaira; Ayuchecaria, Noverda
Jurnal Jejaring Matematika dan Sains Vol. 5 No. 1 (2023): Jurnal Jejaring Matematika dan Sains
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2023.v5.i1.803

Abstract

Pusat Kesehatan Masyarakat (Puskesmas) merupakan tempat pelayanan kesehatan pertama dan utama di masyarakat. Pengobatan yang rasional merupakan hal penting dalam pelayanan kesehatan. World Health Organization memperkirakan separuh obat yang digunakan telah diresepkan, dibagikan dan dijual secara tidak tepat. Pengobatan yang tidak rasional dapat menyebabkan kesalahan pengobatan serta timbulnya efek samping. World Health Organization menetapkan indikator penggunaan obat yang rasional. Penelitian ini bertujuan mengevaluasi penggunaan obat di pusat kesehatan masyarakat yang ditinjau dari indikator peresepan Menurut World Health Organization. Penelitian ini bersifat deskriptif dengan pengambilan data retrospektif. Data diambil dari resep pasien rawat jalan disalah satu pusat kesehatan masyarakat di Kalimantan Selatan pada periode januari hingga desember 2021. Jumlah sampel resep yang dianalisis adalah 373 resep. Hasil penelitian dibandingkan dengan standar WHO. Hasil menunjukkan bahwa jumlah rata-rata obat per lembar resep 3,77; persentasi penggunaan obat generic 98,57%; persentasi obat antibiotic 12,23%; persentasi obat sediaan injeksi 0% dan persentasi obat sesuai Formularium Nasional 93,88%. Hasil evaluasi penerapan penggunaan obat yang rasional sesuai dengan indikator WHO ada tiga indikator yang memenuhi yaitu persepan injeksi, dan persepan antibiotik sedangjan  jumlah item obat per lembar resep Peresepan obat dengan nama generik dan penggunaan obat sesuai formularium nasional masih belum memenuhi persyaratan sesuai dengan indikator WHO

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