cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Yusri
Contact Email
yusri@unm.ac.id
Phone
+6285255602827
Journal Mail Official
yusri@unm.ac.id
Editorial Address
Universitas Negeri Makassar Jl. AP Pettarani Makassar Sul-Sel Telpon: 869834-869854-860468; 081328540086; Fax: 0411-868794-868879
Location
Kota makassar,
Sulawesi selatan
INDONESIA
Indonesian Journal of Fundamental Sciences
Published by Universitas Negeri Makassar
ISSN : 2621671X     EISSN : 26216728     DOI : 10.26858/ijfs
Core Subject : Health, Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics
Scopes of the journal consist of: 1. Mathematics, 2. Physics, 3. Chemistry, 4. Biology, 5. Statistics, and 6. Engineering.
Arjuna Subject : Umum - Umum
Articles 4 Documents
 1 
Search results for , issue "Vol 8, No 2 (2022)" : 4 Documents clear
The Effect of Acid Treatment on Metal Oxide Content of South Sulawesi Natural Clay Sumiati Side; Suriati Eka Putri
Indonesian Journal of Fundamental Sciences Vol 8, No 2 (2022)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.119 KB) | DOI: 10.26858/ijfs.v8i2.40737

Abstract

Abstract. This study investigated the effect of adding acid on the metal oxide content of natural clay in Gowa Regency, South Sulawesi Province. The acid solutions used were sulfuric acid (H2SO4), hydrochloric acid (HCl), and nitric acid (HNO3) with a concentration of 3 M. The characterization of metal oxide content was carried out using XRF and morphological analysis of natural clay using SEM. The results showed that the impurity metal oxide content decreased after being treated with acid. The largest mass percent of silica alumina occurred in the HCl 3 M treatment with alumina mass percent of 20.27% and silica of 25.41%. The clay morphology looks different after being treated with acid for all types of acid solutions. The results of this study are expected to become recommendations for further research related to natural clay pretreatment both as a ceramic base material and as a catalyst support.
Temporal Analysis of the Influence of the Number of Vaccinations on the Number of Covid-19 Cases in South Sulawesi Province Using ARIMAX Model Aswi Aswi; Muhammad Arif Tiro; Sudarmin Sudarmin; Ruliana Ruliana; Andi Gagah Palarungi Taufik; Zulhijrah Zulhijrah
Indonesian Journal of Fundamental Sciences Vol 8, No 2 (2022)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.515 KB) | DOI: 10.26858/ijfs.v8i2.40561

Abstract

South Sulawesi is a province that has the highest number of Covid-19 cases in the Sulawesi island region. Vaccination is one way that is considered effective in controlling the infection of a disease. Covid-19 vaccination in Indonesia was carried out in January 2021. This study aims to obtain the best Autoregressive Integrated Moving Average X (ARIMAX) model in modeling the effect of the number of vaccinations on the number of Covid-19 cases in South Sulawesi Province. Data on the number of vaccinations and Covid-19 cases in South Sulawesi Province (October 1, 2021 - January 31, 2022) were used. The best ARIMAX model in modeling Covid-19 in relation to the number of vaccinations is ARIMAX (2,1,0). The results showed that the number of vaccinations had a negative effect on the number of Covid-19 cases at the significant level of 10%. This indicates that if the number of vaccinations increases then the number of Covid-19 cases will decrease.
Karakteristik Batako Pejal di Kota Manado, Bitung dan Tomohon I Gede Yohan Kafrain; Brayen N. Palandung; Lisa S.G.E Pandean; Utarry E. Rangkang
Indonesian Journal of Fundamental Sciences Vol 8, No 2 (2022)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (855.068 KB) | DOI: 10.26858/ijfs.v8i2.42461

Abstract

Abstract. Bricks is still one of the walls building materials that are widely used in North Sulawesi, specifically in Manado City, Bitung City and Tomon City. The purpose of this study was to determine the characteristics of local bricks in Manado City, Bitung City and Tomohon City. The characteristics of the bricks in question are the dimensions and compressive strength of the bricks. This research was conducted by taking samples of pejal bricks from several brick production sites in Manado City, Bitung City and Tomohon City. The bricks taken to be used as samples are pressed bricks. Brick samples that have been taken from these three cities, are then tested in the laboratory. From the test results in the laboratory, it is known that for the dimensions of the brick samples taken in Manado City and Bitung City, it has not met the brick size standards based on SNI 03-0349-1989, namely the brick length of 390 mm (+3&-5), width 190 mm (+2) with a thickness of 100 mm. The bricks taken from Tomohon City for length mostly meet the existing standards with width and thickness that have not met but are close to the standard.  The results of the compressive strength test for brick samples are only brick samples in Malalayang sub-district that meet the standards, including quality IV-III of 30.67 kg / cm2. None of the brick samples taken from Bitung City and Tomohon City met the compressive strength standards. Keywords: Brick, Building Material, SNI 03-0349-1989
SOLASI DAN IDENTIFIKASI SENYAWA METABOLIT SEKUNDER EKSTRAK METANOL AKAR NAPAS PEDADA (Sonneratia caseolaris L.) Netti Herawati; Sitti Faika; Maryono Maryono; Ramdani Ramdani
Indonesian Journal of Fundamental Sciences Vol 8, No 2 (2022)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.334 KB) | DOI: 10.26858/ijfs.v8i2.40733

Abstract

Abstrak. Penelitian eksplorasi ini bertujuan untuk mengisolasi dan mengidentifikasi senyawa metabolit sekunder yang terdapat dalam ekstrak metanol akar S. caseolaris yang terdiri dari preparasi sampel, ekstraksi (maserasi) dengan metanol, fraksinasi dengan Kromatografi Kolom Cair Vakum dan Kromatografi Kolom Tekan, pemurnian dengan dekantasi dan identifikasi dengan uji pereaksi dan uji Spektroskopi. Sampel berasal dari muara sungai Waetuo, Kecematan Tanete Riattang Timur, Kabupaten Bone, Provinsi Sulawesi Selatan. Hasil penelitian berupa senyawa murni yaitu kristal putih berbentuk serbuk yang menunjukkan noda tunggal pada uji KLT sistem tiga eluen. Kristal menunjukkan hasil positif terhadap pereaksi Wagner dan Dragendorff. Hasil data spektrum FT-IR menunjukkan adanya gugus fungsi N—H primer, C—H alifatik, C—N, C—H (—CH2  dan  —CH3), C=C aromatik dan C=O. Berdsarkan data tersebut, menunjukkan bahwa senyawa yang diperoleh merupakan golongan senyawa alkaloid.Kata Kunci: Akar, Sonneratia caseolaris L., Alkaloid

Page 1 of 1 | Total Record : 4

 1 

Filter by Year

2022 2022


Reset
Filter By Issues
All Issue Vol 11, No 2 (2025) Vol 11, No 1 (2025) Vol 10, No 2 (2024) Vol 10, No 1 (2024) Vol 9, No 2 (2023) Vol 9, No 1 (2023) Vol 8, No 2 (2022) Vol 8, No 1 (2022) Vol 7, No 2 (2021) Vol 7, No 1 (2021) Vol 6, No 2 (2020) Vol 6, No 1 (2020) Vol 5, No 2 (2019) Vol 5, No 1 (2019) Vol 4, No 2 (2018) Vol 4, No 1 (2018) Vol 3, No 2 (2017) Vol 3, No 1 (2017) Vol 2, No 2 (2016) Vol 2, No 1 (2016) Vol 1, No 1 (2015) More Issue