Vol. 11 No. 2 (2025): December

Author Geographical Coverage: Indonesia, Nigeria, Turkey

DOI: https://doi.org/10.21580/jnsmr.v11i2
Published: 2025-12-10

Original Research Articles

  • Kombucha origin clustering based on 16S metabarcoding datasets analysis

    Imam Bagus Nugroho, Universitas Gadjah Mada, Indonesia
    Darmawan Ari Nugroho, Universitas Gadjah Mada, Indonesia
    Abdul Rahman Siregar, Universitas Gadjah Mada, Indonesia
    103-112
    DOI: https://doi.org/10.21580/jnsmr.v11i2.23949
    Abstract View: 298 PDF Download: 192

  • Null Bézier Curves in Minkowski 3-Space

    Arfah, Department of Mathematics, karedeniz Technical University, Turkey
    113-121
    DOI: https://doi.org/10.21580/jnsmr.v11i2.25323
    Abstract View: 149 PDF Download: 157

  • Mineralogical classification and impact simulation of the Punggur (H7-Melt Breccia) Meteorite, Indonesia

    Robiatul Muztaba, Departmen of Atmospheric and Planetary Science, Facultyof Science, Institut Teknologi Sumatera, Indonesia
    Danni Gathot Harbowo, Departement of Geology Enginering, Institut Teknologi Sumatera, Indonesia
    Hakim Luthfi Malasan, Department of Astronomy, Institut Teknologi Bandung, Indonesia
    122-135
    DOI: https://doi.org/10.21580/jnsmr.v11i2.29459
    Abstract View: 195 PDF Download: 234

  • Efficient Numerical Method for Generating Closed Form Solution for Nonlinear Bratu Differential Equations

    Ikechukwu Jackson Otaide, Michael and Cecilia Ibru University, Ughelli, Nigeria, Nigeria
    Ekuma-Okereke Enyinnaya, Federal University of Petroleum Resources, Effurun, Delta State, Nigeria., Nigeria
    136-145
    DOI: https://doi.org/10.21580/jnsmr.v11i2.26950
    Abstract View: 130 PDF Download: 148

  • Potential of local material SiO2 water Hyacinth for semiconductor materials

    Sony Hidayat, Semarang State University, Indonesia
    Ahmad Ziyan Nafis, Semarang State University, Indonesia
    Muhammad Noorman Perdana, Semarang State University, Indonesia
    Upik Nurbaiti, Semarang State University, Indonesia
    146-153
    DOI: https://doi.org/10.21580/jnsmr.v11i2.27406
    Abstract View: 193 PDF Download: 174

  • Forecasting the unemployment rate in West Java Province using VARX and SVR methods

    Yuniar Kusuma Wardani, Department of Mathematics, The Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Indonesia
    Sugiman, Department of Mathematics, The Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Indonesia
    153-163
    DOI: https://doi.org/10.21580/jnsmr.v11i2.27602
    Abstract View: 200 PDF Download: 197

  • Seismicity analysis of the Southern Java region (2020-2024) based on the b-value and a-value using the maximum Likelihood method

    Syafrida Dwi Apriyanti, Departement of Physics, Faculty of Mathematics and Natural Science, Universitas Jenderal Soedirman, Indonesia
    Nurvita Fatmasari, Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Raya Banjarmangu no.12, Banjarnegara, 53411, Indonesia., Indonesia
    Mirda Prisma Wijayanto, Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Jenderal Soedirman, Indonesia
    Arifin Achmad, Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Jenderal Soedirman, Indonesia
    Muflihatun, , Indonesia
    164-173
    DOI: https://doi.org/10.21580/jnsmr.v11i2.27765
    Abstract View: 198 PDF Download: 230

  • Evaluating surface water and groundwater quality parameters in the Karst Mining Zone, Gunungkidul for environmental risk mitigation

    Yudhistira Zein Sanadha, Institut Kesehatan dan Teknologi PKP DKI Jakarta, Indonesia
    Haerul Anwar, Institut Kesehatan dan Teknologi PKP DKI Jakarta, Indonesia
    Faisal M. Jasin, Institut Kesehatan dan Teknologi PKP DKI Jakarta, Indonesia
    Bayu Achil Sadjab, Halmahera University, Indonesia
    174-182
    DOI: https://doi.org/10.21580/jnsmr.v11i2.27773
    Abstract View: 216 PDF Download: 352

  • Comparative study of artificial Neural Network and Kalman Filter models for blood demand forecasting at PMI Surabaya

    Ainin Sofia, Universitas Nahdlatul Ulama Surabaya, Indonesia
    Teguh Herlambang, Universitas Nahdlatul Ulama Surabaya, Indonesia
    Rizqi Putri Nourma Budiarti, Universitas Nahdlatul Ulama Surabaya, Indonesia
    Endang Sulistiyani, Universitas Nahdlatul Ulama Surabaya, Indonesia
    183-197
    DOI: https://doi.org/10.21580/jnsmr.v11i2.28540
    Abstract View: 152 PDF Download: 154

  • Endophytic fungi from Parijoto (Medinilla speciosa) leaves and their potential as biocontrol agents against Corn Pest Larvae

    Andang Syaifudin, Department of Biology, Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang,
    Baiq Farhatul Wahidah, Environmental Engineering, Universitas Islam Negeri Walisongo Semarang, Indonesia, Indonesia
    198-208
    DOI: https://doi.org/10.21580/jnsmr.v11i2.28768
    Abstract View: 144 PDF Download: 162