Journal of Mathematical and Fundamental Sciences https://journals.itb.ac.id/index.php/jmfs <p><img class="imgdesc" src="https://lppm.itb.ac.id/wp-content/uploads/sites/55/2021/08/JMFS_ITB_small.jpg" alt="" width="173" height="220" /></p> <p style="text-align: justify;"><em>Journal of Mathematical and Fundamental Sciences </em>welcomes full research articles in the area of Mathematics and Natural Sciences from the following subject areas: Astronomy, Chemistry, Earth Sciences (Geodesy, Geology, Geophysics, Oceanography, Meteorology), Life Sciences (Agriculture, Biochemistry, Biology, Health, Medical, Pharmacy), Mathematics, Physics, and Statistics. New submissions of mathematics articles starting in January 2020 are required to focus on applied mathematics with real relevance to the field of natural sciences.</p> <p style="text-align: justify;">Starting from Vol. 1, No. 1, 1961, full articles published are available online at ITB Journals and indexed by <a href="https://www.scopus.com/source/sourceInfo.uri?sourceId=21100268424&amp;origin=recordpage">Scopus</a>, <a href="https://mjl.clarivate.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&amp;ISSN=2337-5760">Web of Science (Emerging Sources Citation Index) - Clarivate Analytics</a>, <a href="https://www.scimagojr.com/journalsearch.php?q=21100268424&amp;tip=sid&amp;clean=0">Scimago JR</a>, <a href="https://doaj.org/toc/2338-5510">Directory of Open Access Journals (DOAJ)</a>, <a href="https://scholar.google.co.id/citations?hl=en&amp;user=xdqQsgUAAAAJ&amp;view_op=list_works&amp;sortby=pubdate">Google Scholar</a>, <a href="https://journals.indexcopernicus.com/Journal+of+Mathematical+and+Fundamental+Sciences,p24780956,3.html">Index Copernicus</a>, <a href="https://rzblx1.uni-regensburg.de/ezeit/searchres.phtml?bibid=AAAAA&amp;colors=7&amp;lang=en&amp;jq_type1=QS&amp;jq_term1=journal+of+mathematical+and+fundamental+sciences">The Elektronische Zeitschriftenbibliothek (EZB) by University Library of Regensburg</a>, <a href="https://atoz.ebsco.com/Titles/SearchResults/8623?SearchType=Contains&amp;Find=Journal+of+Mathematical+fundamental+Sciences&amp;GetResourcesBy=QuickSearch&amp;resourceTypeName=allTitles&amp;resourceType=&amp;radioButtonChanged=">EBSCO Open Science Directory</a>, <a href="https://asean-cites.org/aci_search/journal.html?b3BlbkpvdXJuYWwmaWQ9MTAzNzg">ASEAN Citation Index</a>, <a href="https://garuda.kemdikbud.go.id/journal/view/7389">Garba Rujukan Digital (Garuda)</a> and <a href="https://sinta.ristekbrin.go.id/journals/detail?id=667">Science and Technology Index (SINTA)</a>.</p> <p style="text-align: justify;">The journal has been also accredited for five years based on The Decree of Directorate General of Research and Development Strengthening, Ministry of Research, Technology and Higher Education of the Republic of Indonesia <a href="https://lppm.itb.ac.id/wp-content/uploads/sites/55/2021/12/Salinan-SK-Hasil-Akresitasi-Jurnal-Ilmiah-Periode-II-Tahun-2018.pdf">No. 030/E/KPT/2018</a>, dated on October 24th, 2018.</p> <p style="text-align: justify;">Published by Institute for Research and Community Services, Institut Teknologi Bandung, in collaboration with <a href="https://www.lppm.itb.ac.id/wp-content/uploads/sites/55/2018/01/MoU-HAKI-JMFS-2018-BW.pdf">Indonesian Chemical Society (Himpunan Kimia Indonesia - HKI)</a>.</p> <p>ISSN: 2337-5760; E-ISSN: 2338-5510</p> <p><strong><u>Publication History</u></strong></p> <p><strong>Formerly known as:</strong></p> <ul> <li>ITB Journal of Science (2008 - 2012)</li> <li>Proceedings ITB Science and Technology (2003 - 2007)</li> <li>Proceedings ITB (1961 - 2002)</li> </ul> <p>Back issues also can be read online at http://journal.itb.ac.id</p> <p><a title="SCImago Journal &amp; Country Rank" href="https://www.scimagojr.com/journalsearch.php?q=21100268424&amp;tip=sid&amp;exact=no"><img src="http://www.scimagojr.com/journal_img.php?id=21100268424&amp;title=true" alt="SCImago Journal &amp; Country Rank" border="0" /></a></p> en-US jmfs@itb.ac.id (Prof. Dr. A. Agung Nugroho) jmfs@itb.ac.id (Dian H. Wahyudi) Sun, 31 Dec 2023 16:34:59 +0700 OJS 3.2.1.0 http://blogs.law.harvard.edu/tech/rss 60 Magnetic Characterization of Fine Sediment in the Solo Basin Indonesia https://journals.itb.ac.id/index.php/jmfs/article/view/18792 <p>The magnetic characteristics of fine sediment samples from the Solo Basin are reported in this paper. Magnetic fine sediment was identified by magnetic susceptibility mapping based on sampling of 182 points. Then, a depth analysis (on 7 selected sampling points) was performed using X-ray fluorescence spectrometry, which showed an iron oxide content of up to 55.42%, while X-ray diffractometry confirmed magnetite minerals with crystallite size ≤100 nm. Further, the vibrating sample magnetometry results verified the magnetic characteristics under a single-domain configuration. The characteristic magnetic susceptibility map showed that there is a lithogenic effect on sediment in the Solo Basin. In addition, anthropogenic activities seem to play a pivotal role in distributing magnetic materials.</p> Budi Legowo, Anti Fatkhul Qoiriah, Artono Dwijo Sutomo, Shandiyano Putra, Wiwit Suryanto, Budi Purnama Copyright (c) 2023 Journal of Mathematical and Fundamental Sciences https://journals.itb.ac.id/index.php/jmfs/article/view/18792 Sun, 31 Dec 2023 00:00:00 +0700 Optical Spectroscopy and Photoionization Model of Planetary Nebula NGC 6572 https://journals.itb.ac.id/index.php/jmfs/article/view/21621 <p class="Abstract"><span lang="EN-US">We investigated NGC 6572 through optical spectroscopy to determine its kinematical and chemical properties. Two intermediate dispersion spectra (<em>R</em>~5000) centered around Hα and Hβ were used to derive the nebular expansion velocity from emission lines associated with Hα, Hβ, [OIII], [NII], and [SII] ions. A low dispersion spectrum (<em>R</em>~1000) was used to determine the nebular electron temperature, density, and chemical composition. We performed photoionization modeling to construct a self-consistent nebular model, while intermediate-resolution spectral images showed the global elliptical structure of the nebula. The expansion velocity deduced from most of the emission lines is consistent with the typical expansion velocity of planetary nebulae, i.e., around 15-20 kms<sup>-1</sup>. The nebular physical properties align well with those determined by other studies. The nebular abundances were found to be lower than the solar abundances (except for oxygen) but still comparable with the abundances derived by other researchers. The photoionization model generated spectral lines that are consistent with the lines found in the observations. Further spectroscopic observations with higher resolution and wider range at various position angles will be very useful to reveal a more complete and detailed structure of the nebula and to improve the determination of the nebular physical properties. </span></p> Muhammad Fajrin, Hakim Luthfi Malasan, Evan Irawan Akbar Copyright (c) 2024 Journal of Mathematical and Fundamental Sciences https://journals.itb.ac.id/index.php/jmfs/article/view/21621 Thu, 11 Jan 2024 00:00:00 +0700 Sedimentary Facies, Palynology, and Organic Geochemistry of Eocene Kalumpang Formation in Lariang and Karama Areas, West Sulawesi, Indonesia https://journals.itb.ac.id/index.php/jmfs/article/view/20338 <p>The Kalumpang Formation was deposited in a delta plain setting. A Middle to Late Eocene age (Proxapertites operculatus zone) was inferred from palynological analysis, with a paleoenvironment in a coastal plain setting with a strong terrestrial influence. Samples from the Kalumpang Formation indicate a marginal to early mature stage for hydrocarbon generation. It is mostly composed of gas-prone to oil and gas-prone Type III kerogen facies. The biomarker character of both the rock and oil samples suggests a terrestrial origin, with a significant contribution of estuarine or bay organic material. The oil derives from a non-carbonate lithology, while the rock samples are from carbonate/calcareous shale origin. The abundance of oleanane compound and C<sub>30</sub> resins suggests higher plant angiosperm input of Late Cretaceous or younger age for both the rock and the oil samples. The oil seep contains more abundant oleananes compared to the carbonaceous mudstone of the Kalumpang Formation. This suggests that the oil originated from more marine facies than the rock samples, which were deposited in a delta plain setting. This study demonstrated the agreement of depositional environment interpretation and age assessment between lithofacies, palynological, and organic geochemistry analysis.</p> Rakhmat Fakhruddin, Nisa Nurul Ilmi, Edy Sunardi, Taufik Ramli, Agus Ardianto Budiman, Indra Nurdiana, Dzul Fadli Copyright (c) 2024 Journal of Mathematical and Fundamental Sciences https://journals.itb.ac.id/index.php/jmfs/article/view/20338 Thu, 18 Jan 2024 00:00:00 +0700