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Jl. Hendrik Timang, Gedung Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Palangka Raya Kampus UPR Tunjung Nyaho Palangka Raya, Kalimantan Tengah, 73112
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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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A Desaign of Caffeate Acid Derivatives for Anticancer based on DFT Molecular Docking: Studi Senyawa Turunan Asam Kafeat sebagai Antikanker: Pendekatan DFT dan Molecular Docking Oksal, Efriyana; Ariefin, Mokhamat; Pasaribu, Marvin Horale
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.i1.804

Abstract

This research informs a descriptive study of caffeic acid derivatives such as ethyl caffeate, fluoro methyl caffeate, chloro methyl caffeate, bromo methyl caffeate, iodo methyl caffeate compounds, using density functional theory in B3LYP method with def2-TZVP basis set. The substitution of various halide atoms in the derivative compounds showed a high increase in chemical reactivity than the methyl group for the main compound by increasing the electron donor ability of the compound in chemical reactions. The molecular structures of some derivative compounds were optimized with geometrical analysis values depicting stable molecular structures with lower HOMO-LUMO energy difference. Quantum chemical parameters such as hardness (η), softness (σ), electronegativity (χ), and electrophilicity (ω) were generated as descriptors for the chemical behavior of the molecules. The FT-IR vibrational frequencies that have been calculated and characterized are in good agreement with the molecular structure. The molecular docking results show that the five ligands are able to interact with amino acid residues similar to the amino acids of the native ligand. The binding energy values for the five native ligands are -6.5, -6.8, -6.6, -6.5, and -6.4 kcal mol-1. Furthermore, binding and interaction values similar to the native ligand, it is expected that the five ligands have potential as anticancer.
Study of the Effect of Domestic Wastewater from Jalan Lele Residents of Palangka Raya City on the Acidity and Alkalinity Levels of the Receiving Water Body: Studi Pengaruh Air Limbah Domestik Penduduk Jalan Lele Kota Palangka Raya terhadap Kadar Asiditas dan Alkalinitas Badan Air Penerima Manurung, Tety; Natalia, Nasa; Suma, Joy Angel Aria; Purba, Abed Nego; Naiya, Naiya; Hulu, Dominique F.S.; Rosmainar, Lilis; Hermayantiningsih, Dwi
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.i1.805

Abstract

This research aims to determine the impact of domestik waste water disposal produced by residents living on Jalan Lele, Palangka Raya City, on the value of acidity and alkalinity levels in the receiving water body. The acidity level obtained was 24.098 mg/L and the alkalinity level was 254.410 mg/L. The acidity levels not comply to the Government Regulation Number 20 of 1990 levels and Government Regulation Number 82 of 2001 for standart water quality type B. Similarly for alkalinity levels doesn’t comply to World Heal Organization Regulation 2011 for irrigation water. Based on the results ​​of high levels of acidity and alkalinity in receiving water bodies, it encourages further research to be carried out for monitoring and handling domestik waste in residential areas in the city of Palangka Raya.

Page 8 of 8 | Total Record : 72

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