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All Journal CHEMISTRY PROGRESS Jurnal Riset Kimia Indonesian Journal of Chemistry Jurnal Medik Veteriner Jurnal Ekonomi Manajemen dan Sosial (JEMeS)
Mariyam, Dewi
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Veterinary

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Studi Karakterisasi dan Aktivitas Antibakteri Senyawa Kompleks dari Zink(II) Klorida, Kalium Tiosianat dan 2-Aminopiridina Mariyam, Dewi; Farida, Nani; Wijaya, Husni Wahyu; Dasna, I Wayan
Jurnal Riset Kimia Vol 13, No 1 (2022): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v13i1.465

Abstract

The development of complex compounds as antibacterial continues to be carried out to overcome cases of microbial resistance. One of them is the development of complex compounds with thiocyanate and aminopyridine ligands which show good potential as antibacterial. Complex compound of zinc(II) chloride with thiocyanate and 2-aminopyridine ligands was successfully synthesized. The synthesis was carried out by mixing the reactants with ratio of Zn2+: 2-aminopyridine: SCN 1:2:2 under heating and stirring continuously for 6 hours. The Obtained beam-shaped colorless crystals were characterized using melting point, electrical conductivity, thiocyanate ion qualitative, FTIR, SEM-EDX, XRD powder and antibacterial activity against Salmonella typhi and Staphylococcus aureus test. The crystals melt at 160-165 0C. The results of the electrical conductivity test, qualitative test of thiocyanate ion, FTIR and SEM-EDX analysis indicate the presence of Zn2+, thiocyanate and 2-aminopyridine with ratio 1: 2: 2. Based on XRD powder spectral data and theoritical analysis, the complex synthesized compounds had high crystallinity and predicted has tetrahedral structure. Antibacterial test showed that against S.aureus, the compound had higher antibacterial activity than free ligands, but lower than chloramphenicol. Therefore, the antibacterial activity of the complex compound was classified as moderate.
Efficacy of Black Cumin (Nigella sativa) Ameliorate Organophosphate Toxicity in Pregnant Rats Based on Progesterone Levels and Fetal Bone Development Hendrawan, Viski Fitri; Agustina, Galuh Chandra; Aditya, Siska; Oktanella, Yudit; Firmawati, Aulia; Mariyam, Dewi
Jurnal Medik Veteriner Vol. 7 No. 1 (2024): April
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol7.iss1.2024.134-142

Abstract

Black cumin (Nigella sativa), also referred to as black cumin, is a versatile herbal treatment that has recently grown in popularity, it contains antimicrobial, antibacterial, antifungal, anti-inflammatory, analgesic, antipyretic, antiparasitic, antihistamine, antihypertensive, antitumor, anticancer, antidiabetic, and anti-asthmatic properties are just a few of the positive and pharmacological effects of active ingredients in black cumin, such as thymoquinone and other compounds. This study aimed to evaluate black cumin activity ameliorates organophosphate toxicity in pregnant rats based on progesterone levels and fetal bone development. In this study, pregnant albino rats were divided into five treatment groups i.e. (K-) placebo; (K+) treated an organophosphate; treated an organophosphate and black cumin extract at a dose of (P1) 200 mg/kg BW, (P2) 400 mg/kg BW, and (P3) 600 mg/kg BW. The progesterone levels serum and fetal bone development were evaluated and calculated using ANOVA followed by Turkey. The results showed that P2 and P3 groups significantly increase in progesterone levels compared to K+ and P1 groups. Fetal bone was also reported increase in the growth of caudal vertebrae. In conclusion, 400 mg/kg BW of black cumin could ameliorated progesterone levels and fetal bone development in pregnant rats with organophosphate toxicity.
Synthesis, Structure, Antibacterial Activity, and Hirshfeld Surface Analysis of Complex [Co(4-ampy)4(NCS)2]·CO2 Savitri, Linggar Agil; Putra, Faaza'izzahaq Setta; Laksmana, Sutandyo Dwija; Mariyam, Dewi; Dasna, I Wayan
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.90585

Abstract

The [Co(4-ampy)4(NCS)]2·CO2 complex compound was successfully synthesized using the reflux method from the reaction between CoCl2·6H2O, 4-aminopyridine, and KSCN in methanol solvent for 6 h at 64 °C. The synthesized compound is a dark purple cube-shaped crystal with a melting point of 209 °C. FTIR test showed the presence of isothiocyanate anion at C=N stretching vibration wavenumber 1633 cm−1, C–N vibration on amine group belonging to 4-aminopyridine ligand at 1217 cm−1, and C=N vibration of pyridine aromatic group at 1334 cm−1. Single crystal X-ray diffraction data refinement results show the complex compound has octahedral geometry in a cubic lattice with space group Pn̄3n with lattice parameters a = b = c = 16.426(3) Å and α = β = γ = 90°. According to the crystal data, there was one molecule of CO2 in the crystal packing of the complex. Hirshfeld surface analysis showed the major interaction contributions from C⋯H/H⋯C, H⋯H, S⋯H/H⋯S, and O⋯H/H⋯O. The antibacterial activity test results showed that the activity of the synthesized complex was more active against Staphylococcus aureus but less effective against Escherichia coli.
Comprehensive Literature Review : Analisis Persepsi Pasien dan Kualitas Layanan terhadap Inovasi Layanan Rumah Sakit melalui Telemedicine Mariyam, Dewi; Kustiani, Lilik; Estikowati
JEMeS - Jurnal Ekonomi Manajemen dan Sosial Vol. 8 No. 1 (2025): Jurnal Ekonomi Manajemen dan Sosial (JEMeS)
Publisher : Universitas Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56071/jemes.v8i1.1121

Abstract

Telemedicine has become an important innovation in healthcare services, especially in increasing patient accessibility to medical services. This study aims to analyze patient perceptions and service quality towards the implementation of telemedicine in hospitals. The method used is a comprehensive literature review, by analyzing various academic literature that discusses patient perceptions, dimensions of service quality, and challenges in implementing telemedicine. This study focuses on five dimensions of service quality, namely assurance, assurance, physical evidence, empathy, and responsiveness, and how these aspects affect patient experience and satisfaction. The results of the analysis show that patient perceptions of telemedicine are highly dependent on technological fitness, ease of access, and trust in medical personnel who provide consultations. In addition, patients prioritize aspects of data security and diagnostic accuracy, which are key factors in accepting telemedicine as an alternative healthcare service. Although telemedicine provides benefits such as ease of access and time efficiency, this study also found several challenges in its implementation. The gap in digital infrastructure, limited technological literacy among patients, and the need for stronger regulations are the main obstacles that need to be overcome. Therefore, the development of telemedicine in hospitals must focus on improving service quality, educating patients, and policies that support service desires.
Sintesis dan Karakterisasi Bioplastik Berbasis Selulosa Nitrat Sekam Padi dengan Penambahan Kitosan dan Sorbitol sebagai Plasticizer Asriani Hayatun; Maarebia, Rosalinda Zeniona; Irianti, Nova Tri; Mariyam, Dewi
CHEMISTRY PROGRESS Vol. 19 No. 1 (2026)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.19.1.2026.68044

Abstract

ABSTRAK Selulosa nitrat disintesis menggunakan selulosa hasil ekstraksi sebagai bahan baku melalui proses nitrasi menggunakan variasi perbandingan asam penitrasi. Selulosa nitrat yang dihasilkan berbentuk bubuk berwarna putih kekuningan dan dikarakterisasi menggunakan Fourier Transform Infrared (FTIR). Hasil karakterisasi FTIR menunjukkan adanya puncak utama pada bilangan gelombang 1286 cm⁻¹ yang mengindikasikan keberadaan gugus nitrat (–NO), didukung oleh munculnya puncak serapan pada daerah 854,47 cm⁻¹ dan 752,24 cm⁻¹. Selulosa nitrat hasil sintesis selanjutnya digunakan sebagai bahan baku dalam pembuatan bioplastik dan dikombinasikan dengan komponen pendukung untuk memperoleh karakteristik material yang optimal. Produk bioplastik yang dihasilkan dikarakterisasi serta diuji sifat mekaniknya untuk menentukan formulasi terbaik. Hasil penelitian menunjukkan bahwa perbandingan asam penitrasi optimum dalam sintesis selulosa nitrat diperoleh pada rasio 7:3 (v/v) dengan kadar selulosa nitrat sebesar 67,5% dan kadar nitrat 4,17%. Bioplastik terbaik juga diperoleh pada perbandingan asam penitrasi 5:5 (v/v) dengan nilai kekuatan tarik sebesar 8,1268 MPa dan elongasi 8,8%. Selain itu, bioplastik yang dihasilkan mampu terdegradasi dalam waktu 21 hari dengan persentase kehilangan massa sebesar 21,02%, laju degradasi 0,0019 g/hari, serta estimasi waktu degradasi lengkap selama 100 hari. ABSTRACT Nitrate cellulose was synthesized using extracted cellulose as the raw material through a nitration process with various nitrating acid ratios. The synthesized nitrate cellulose was obtained in the form of a yellowish-white powder and characterized using Fourier Transform Infrared (FTIR) spectroscopy. The FTIR results revealed a major absorption peak at a wavenumber of 1286 cm⁻¹, indicating the presence of the nitrate functional group (–NO), supported by the appearance of absorption peaks at 854.47 cm⁻¹ and 752.24 cm⁻¹. The synthesized nitrate cellulose was subsequently utilized as a raw material for bioplastic production and combined with supporting components to obtain optimal material characteristics. The resulting bioplastic products were characterized and mechanically tested to determine the best formulation. The findings demonstrated that the optimum nitrating acid ratio for nitrate cellulose synthesis was 7:3 (v/v), resulting in a nitrate cellulose content of 67.5% and a nitrate content of 4.17%. The best bioplastic properties were also obtained at a nitrating acid ratio of 5:5 (v/v), with a tensile strength of 8.1268 MPa and an elongation of 8.8%. Furthermore, the resulting bioplastic was capable of degrading within 21 days, exhibiting a mass loss percentage of 21.02%, a degradation rate of 0.0019 g/day, and an estimated complete degradation time of 100 days.
Co-Authors Aditya, Siska Agustina, Galuh Chandra Asriani Hayatun Estikowati Firmawati, Aulia Husni Wahyu Wijaya I Wayan Dasna Irianti, Nova Tri Laksmana, Sutandyo Dwija Lilik Kustiani Maarebia, Rosalinda Zeniona Nani Farida Putra, Faaza'izzahaq Setta Savitri, Linggar Agil Viski Fitri Hendrawan Yudit Oktanella, Yudit