Article Per Year (5 Year)
p-Index From 2021 - 2026
5.287
P-Index
This Author published in this journals
All Journal JURNAL KIMIA SAINS DAN APLIKASI MARINA CHIMICA ACTA POSITRON Jurnal Kimia Khatulistiwa Equator Journal of Management and Entrepreneurship Protobiont: Jurnal Elektronik Biologi SEMIRATA 2015 Journal of Tropical Biodiversity and Biotechnology Science and Technology Indonesia Jurnal Farmasi Sains dan Komunitas Journal Of Chemical Process Engineering (JCPE) ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Martabe : Jurnal Pengabdian Kepada Masyarakat Walisongo Journal of Chemistry Jurnal Kartika Kimia Molekul: Jurnal Ilmiah Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Tonil, Jurnal Kajian Sastra, Teater dan Sinema JATI (Jurnal Mahasiswa Teknik Informatika) Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas ADPI Sains dan Teknologi Jurnal PkM (Pengabdian kepada Masyarakat) Komatika: Jurnal Pengabdian Kepada Masyarakat Jurnal Akademika Kimia Molekul: Jurnal Ilmiah Kimia Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Akademika Kimia
Gusrizal Gusrizal
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Tanjungpura, Jl. Prof. Dr. H. Hadari Nawawi, Pontianak 78124, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences

Published : 59 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 59 Documents
Search

 2   3   4   5   6 
PENINGKATAN KAPASITAS GURU SEKOLAH MENENGAH ATAS KABUPATEN BENGKAYANG DALAM MENGHASILKAN KARYA ILMIAH Ibnur Rusi; Renny Puspita Sari; Gusrizal Gusrizal; Evi Noviani; Elvi Rusmiyanto; Yudha Arman; Cucu Suhery
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 8 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i8.3049-3056

Abstract

Kompetensi guru merupakan keandalan yang harus dimiliki oleh seorang guru untuk mengatasi permasalahan yang dihadapi dan memenuhi apa yang menjadi kebutuhannya. Peningkatan kompetensi wajib dilakukan oleh seorang guru sehingga guru dapat beradaptasi dengan perubahan yang ada, baik perubahan peraturan, teknologi, maupun kondisi sosial, selain itu karena mengingat peran guru yang menjadi agent of change. Salah satu peningkatan kompetensi yang harus dipenuhi oleh seorang guru adalah pengembangan diri dalam membuat karya tulis ilmiah yang bersumber dari penelitian, dan kemudian dipublikasikan sehingga dapat memberikan manfaat. Banyak manfaat yang dapat diterima oleh seorang guru atas publikasi yang dibuat seperti keberlanjutan profesi guru dalam jenjang karir, sebagai inspirasi bagi guru-guru lain dan contoh baik bagi peserta didik. Pengabdian Kepada Masyarakat (PKM) Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) Universitas Tanjungpura dilakukan untuk memberikan insight positif dan tambahan pengetahuan bagi guru-guru SMA di Kabupaten Bengkayang, Kalimantan Barat. PKM yang dilakukan bertujuan untuk meningkatkan kapasitas guru dalam menghasilkan karya ilmiah yang sebelumnya menjadi kendala bagi sekelompok guru tingkat SMA di Kabupaten Bengkayang. Terdapat tiga sesi dalam PKM ini pertama yaitu penyampaian materi tentang teknik penelusuran literatur, kedua teknik penulisan sitasi dan daftar pustaka, dan terakhir teknik mengindari plagiasi. Secara keseluruhan PKM yang dilakukan oleh FMIPA Universitas Tanjungpura berjalan dengan lancar, dibuktikan dengan antusiasme peserta PKM melalui tanya jawab dan menghadiri kegiatan PKM secara sempurna.
Deep Eutectic Solvent (DES) Based on Choline Chloride and Mono-, Di-, Poly-Ethylene Glycol as KI/I2 Electrolyte Solvents on DSSC Devices Adhitya Adhitya; Winda Rahmalia; Intan Syahbanu; Gusrizal Gusrizal; Adhitiyawarman Adhitiyawarman
Indonesian Journal of Chemistry Vol 23, No 5 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.82754

Abstract

Deep eutectic solvent (DES) has high viscosity and electrical conductivity values, so it can be used as an electrolyte solvent in dye-sensitized solar cells (DSSCs). This research was conducted to produce DES based on choline chloride (ChCl) and ethylene glycol (EG), diethylene glycol, and polyethylene glycol-400, which were then used as KI/I2 couple redox electrolyte solvent to improve the DSSC performance. The synthesis was carried out by mixing each component in several variations of the mole fraction of ChCl (xCHCl) at 80 °C for 15 min, and then was characterized by their pH, freezing point, density, viscosity, and electrical conductivity. A mixture that meets the criteria as a eutectic solvent and has a freezing point of less than −18 °C with the highest electrical conductivity value is DES ChCl:EG with xChCl 0.3 and xChCl 0.4. Both DESs were then used as a solvent for KI/I2, combined with acetonitrile in various compositions. The electrolyte with the highest electrical conductivity value was KI/I2 dissolved in ChCl:EG with xChCl 0.3 solvent 6:4 v/v, and then employed in DSSC device. The best performance of DSSC (Isc= 0.155 mA/cm2; Voc=0.465 V; Pmax= 0.719 W; ηmax= 0.072%) was produced under a light intensity of 0.1 W/cm2.
Rosella Petal Extract (Hibiscus sabdariffa Linn.) as a Reducing Agent in Silver Nanoparticle Synthesis and Its Antibacterial Activity Dewi Dwi Purwati; Gusrizal Gusrizal; Endah Sayekti
Jurnal Kimia Sains dan Aplikasi Vol 26, No 10 (2023): Volume 26 Issue 10 Year 2023
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.26.10.411-420

Abstract

Silver nanoparticles have superior properties that attract much attention because they can increase their effectiveness and efficiency compared to their macroscopic size. Silver nanoparticles have several benefits, one of which is as an antibacterial agent. Synthesis of silver nanoparticles was carried out by reducing silver ions (Ag+) to uncharged silver (Ag0) using a reducing agent from Hibiscus sabdariffa Linn. petal extract. This research aims to synthesize silver nanoparticles by studying several parameters that influence their formation, such as the pH of Hibiscus sabdariffa Linn. petal extract, reaction time, silver nitrate concentration, and Hibiscus sabdariffa Linn. petal extract concentration. The silver nanoparticles formed were then tested for their antibacterial activity. The experimental results showed that the best synthesis was performed using Hibiscus sabdariffa Linn. petal extract with pH 10, reaction time of 45 minutes, silver nitrate concentration of 1×10-4 M, and Hibiscus sabdariffa Linn. petal extract concentration of 0.004%. The synthesized silver nanoparticles, examined through a transmission electron microscope, exhibited a size distribution ranging from 2 to 26 nm with an average size of 12 ± 3 nm, which was stable with a storage time of 3 months. Silver nanoparticles showed antibacterial activity against Staphylococcus aureus. Hibiscus sabdariffa Linn. petal extract is a promising reducing agent for producing antibacterial silver nanoparticles, showcasing its potential in this application.
Synthesis and Characterization of Silver Nanoparticles Using Bioreductant Andong Leaf Extract (Cordyline fruticosa (L) A. Chev.) Mayang Sulistiorini; Gusrizal Gusrizal; Ajuk Sapar
Jurnal Kimia Sains dan Aplikasi Vol 27, No 5 (2024): Volume 27 Issue 5 Year 2024
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.27.5.243-249

Abstract

Silver nanoparticles are known to play a crucial role in various fields, prompting researchers to undertake synthesis and modification to obtain nanoscale particles. Silver nanoparticles were synthesized using a green synthesis-based chemical method with an extract from Cordyline fruticosa (L.) A. Chev. This study aims to determine the optimum conditions, including pH parameters, reaction time, and concentration, and assess the silver nanoparticles’ stability and characteristics. The research findings revealed that the optimal conditions for synthesizing silver nanoparticles were an extract pH of 11, a reaction time of 60 minutes, a AgNO3 concentration of 1.5 x 10-4 M, and an extract concentration of 0.008%. Characterization showed that silver nanoparticles were spherical, ranging from 5 to 20 nm and had an average hydrodynamic size distribution of 100.8 nm. In conclusion, leaf extract of Cordyline fruticosa (L.) A. Chev. can be utilized as a bioreductant and stabilizing agent, as indicated by stability test results, which showed considerable stability over a storage period of three months.
Oil Palm Empty Bunch Compost as a Source of Humic Acid Irma D. Oktavianta; Gusrizal Gusrizal; Nurlina Nurlina
Jurnal Akademika Kimia Vol. 9 No. 4 (2020)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2020.v9.i4.pp205-212

Abstract

Humic acid is a fraction of humic compounds that are part of soil organic matter. In this research, humic acid is extracted from oil palm empty fruit bunches compost. Compost is made from the process of counting the empty oil palm bunches, which are composted until the compost is cooked. The humic acid extraction process uses a strong base extraction method. The principle of humic acid extraction is to dissolve the humic compound with a base solution and then separate it by adding an acid solution (HCl solution). The extraction of humic acid from oil palm empty fruit bunches compost produced blackish-brown humic acid with a yield of 4.895%. The result showed that the main functional group content of palm oil empty fruit bunches compost humic acid was the -OH group and phenol group which had a conjugated carbonyl group and a more aliphatic humic acid structure. Quantitatively, the functional groups of humic acid functional groups each amounted to a total acidity of 7,400 cmol/kg, a carboxylic group of 520 cmol/kg, and a phenolic -OH group content of 6,880 cmol/kg. Research results show that oil palm empty fruit bunches compost can be used as a source of humic acid.
Synthesis And Study of Antimicrobial Properties of Βeta-Tricalcium Phosphate/Silver Nanoparticles Saprianti, Siti; Gusrizal, Gusrizal; Syahbanu, Intan
Walisongo Journal of Chemistry Vol 7, No 1 (2024): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v7i1.21101

Abstract

Beta-tricalcium phosphate (β-TCP) is a compound used as a basic material for making bio-scaffolds and applied for controlled drug delivery and bone regeneration. This material has the advantages of osteoconductivity and biodegradability. However, this material has weaknesses in its antimicrobial properties, so it requires adding other ingredients to increase its ability, such as NpAg. This research aims to obtain β-TCP/NpAg, which has antimicrobial properties. This research started with NpAg, made β-TCP from a combination of Ca(OH)2 and H3PO4 synthesized β-TCP/NpAg, and tested antimicrobial activity using the disc method. The results of this study show that β-TCP has XRD characteristics in the diffraction pattern, such as 21,541, 25,339, 27,619, 30,881, 32,179, and 34,231. In addition, β-TCP/NpAg has XRD characteristics in the diffraction pattern, such as 25.90, 26.67, 27.95, 29.65, 31.17, 32.61, and 34.47, with the highest peak at 31.17, which is the diffraction pattern of NpAg. The antimicrobial β-TCP/NpAg results showed the ability to inhibit the test microbes by 84.37% on S. aureus, 95.17% on E. coli, and 38.83% on C. albicans.
Extract of Rhoeo Discolor Leaf as a Reducing and Stabilizing Agent in the Synthesis of Silver Nanoparticles Gusrizal, Gusrizal; Sayekti, Endah; Radianti, Sri
Molekul Vol 18 No 3 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.3.8249

Abstract

Silver nanoparticles (AgNPs) have been synthesized using Rhoeo discolor leaf extract as a reducing and stabilizing agent. AgNPs were synthesized by adding silver nitrate to the extract of Rhoeo discolor and incubating it in a boiling water bath. The change in color of the mixture from clear to yellow indicated AgNPs formation. The synthesized AgNPs were spherical and showed an absorption peak at around 410-420 nm. The size of particles was distributed from 92 to 485 nm with an average size of 176 nm, and the polydispersity index was 0.185. The stability test showed that synthesized AgNPs were stable for three months of storage at ambient temperature. The extract of Rhoeo discolor were responsible for reducing silver ion and stabilizing the synthesized AgNPs.
Palm Oil Mill Effluent Biochar as An Alternative Potassium Source: Effect of Pyrolysis Time and Its Kinetic Release Krisnanti, Gendis Yayi; Gusrizal, Gusrizal; Wahyuni, Nelly
POSITRON Vol 14, No 1 (2024): Vol. 14 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i1.69833

Abstract

Palm Oil Mill Effluent (POME) is one of the waste products of palm oil processing that can be processed into a biochar. POME biochar contains high levels of nutrient, such as NPK which can be used an alternative potassium source material. This study aims to produced biochar from POME and the influence of pyrolysis time on the characteristics and its kinetic release. Biochar production from POME was conducted at 300oC with pyrolysis time variation of 1 hour, 3 hours and 5 hours. Biochar characterization was conducted using Fourier Transform Infrared (FTIR) Spectroscopy, Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDX), Surface Area Analysis (SAA). Study of potassium release was conducted by mixing one gram amount of biochar with 0.01 M CaCl2 as a function of time. The used kinetics modelling in this study are first-order, second-order, pseudo-first order, pseudo-second orde. The results showed that the biochar yield decreased, while the biochar pH value, exchangeable potassium, non-exchangeable potassium  and surface area increased with the increasing of pyrolysis time. The pseudo- second order model is the most fitted model to describe the potassium release. The pseudo-second order kinetics model gave K release rates of 0.018; 0.024; 0.020; 0.014 (mg g-1min-1), the qe values are 0.814; 0.839; 0.927; 1.111 (mg g-1), respectively.
Pelatihan Pembuatan Virgin Coconut Oil (VCO) Bagi Anggota Koperasi Konsumen Padaidi Sipatuo Khatulistiwa Sayekti, Endah; Gusrizal, Gusrizal; Alimunddin, Andi Hairil; Sapar, Ajuk; Rudiyansyah, Rudiyansyah; Zahara, Titin Anita; Shofiyani, Anis; Rahmalia, Winda; Widiyananta, Surya; Lestari, Titiek; Rahayu, Warsi Kurnia
Abdimas Galuh Vol 6, No 2 (2024): September 2024
Publisher : Universitas Galuh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25157/ag.v6i2.14423

Abstract

Koperasi Konsumen Padaidi Sipatuo Khatulistiwa yang telah beranggotakan 30 orang memiliki potensi tenaga kerja dan potensi pasar dalam merintis unit usaha dan pemasarannya. Salah satu upaya yang dapat dilakukan adalah menjajaki jenis usaha yang mudah, biaya murah dan dapat digunakan oleh berbagai lapisan masyarakat, salah satunya adalah pengolahan sumber daya alam menjadi produk yang bernilai ekonomi. Salah satu potensi yang dapat dikembangkan adalah pemanfaatan kelapa dalam proses pembuatan Virgin Coconut Oil (VCO). VCO merupakan salah satu produk yang memiliki beragam manfaat, selain digunakan untuk menggoreng makanan, ternyata untuk keperluan kesehatan VCO dapat mencegah penyakit jantung, kanker, diabetes, memperbaiki pencernaan, meningkatkan sistem kekebalan tubuh, mencegah infeksi virus HIV, dan SARS. Potensi ini tentunya dapat dikembangkan oleh anggota koperasi, selain untuk memenuhi kebutuhan sendiri ataupun dapat dipasarkan sebagai salah satu jenis usaha produksi dan penjualan bagi Koperasi Konsumen Padaidi Sipatuo Khatulistiwa. Pelaksanaan PKM berlangsung di lokasi salah satu peserta yang merupakan anggota Koperasi Konsumsi Padaidi Sipatuo Khatulistiwa. Peserta yang hadir dalam kegiatan tersebut sebanyak 12 orang yang merupakan perwakilan dari anggota koperasi tersebut. Kegiatan PKM diawali dengan sambutan dari Perwakilan TIM PKM dan Ketua Koperasi, dilanjutkan pemaparan tentang Pembuatan VCO dari Kelapa Dalam. Pada materi ini juga dijelaskan bagaimana manfaat VCO bagi kesehatan dan kendala apa saja yang dihadapi dalam pembuatan VCO. Hasil kegiatan akan dipublikasikan pada jurnal pengabdian atau dalam bentuk hak cipta film dokumenter.
Aktivitas Larvasida Fraksi n-Heksana Akar Kokosan (Lansium domesticum Corr var Kokosan) Terhadap Nyamuk Aedes Aegypti Jasmita, Jasmita; Rudiyansyah, Rudiyansyah; Gusrizal, Gusrizal
Jurnal Kartika Kimia Vol 8 No 1 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i1.892

Abstract

Aedes aegypty is the main vector for transmitting the disease (Dangue Hemorrhagic Fever (DHF). The use of larvicide is one method of vector control. In order to reduce the impact of excessive use of synthetic larvicide, it is necessary to develop a natural larvicide by utilizing the n-hexane fraction of cocosan roots (Lansium domesticum Corr var kokosan). The aim of this study was to determine the larvicidal activity and toxicity of the n-hexane fraction of kokosan roots (Lansium domesticum Corr var kokosan) based on the LC50 value with the probit method. There were nine types of treatment including five concentrations of n-hexane fraction of cocosan roots (10; 250; 500; 750; 1000 ppm) as the treatment group, two positive controls (abate and n-hexane pa), and two negative controls (water and water + tween 80). The larvicidal activity test used 15 third instar Aedes aegypti larvae for each test. Meanwhile, the toxicity test used the BSLT method with 15 Artemia salina larvae in the nauplia phase per test. The number of larval deaths was explained by the LC50 value using the probit method. The results of larvacide activity and toxicity tests were 664,02 ppm and 2795,48 ppm, based on LC50. These results indicate that the n-hexane fraction of kokosan roots has moderate activity and is not toxic.
Co-Authors Abrori, Sayyidus Dzaki Aderiya Munika Adhitiyawarman, Adhitiyawarman Adhitya Adhitya Afri Wita Agus Wibowo Ajuk Sapar Ajuk Sapar Alifiani Maulida Alimunddin, Andi Hairil Andi Hairil Alimuddin Andi Hairil Alimuddin Andi Hairil Alimuddin Anis Shofiyani Anis Shofiyani Ari Widiyantoro Aritonang, Anthoni Batahan Arni Purnamasari Bambang Rusdiarso Bambang Rusdiarso Chris Octavianus Cucu Suhery Devi Wulandari Dewi Dwi Purwati Dewi Puspita Dewi Puspita Dien, Efraime Caroline Dwi Yuniarsih Eko Sri Kunarti Eko Sri Kunarti Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Endah Sayekti Endah Sayekti Evi Noviani Firman Shantya Budi, Firman Shantya Hafiz Muhardi Hairunnisa Hairunnisa Hamzi Anwari Harlia, Harlia Hestivera, Eva Novianti Ibnur Rusi Imelda Hotmarisi Silalahi Intan Syahbanu Irma D. Oktavianta Jasmita, Jasmita Krisnanti, Gendis Yayi Lestari, Titiek Mayang Sulistiorini Nasril Fuad Hasan Nelly Wahyuni Normaningsih Rahayu Noverando Rafiel Angelo Nurlina Nurlina Nurlina Nurlina Nurlina, Nurlina Prayitno, Dwi Imam Puji Ardiningsih Radianti, Sri Rahayu, Warsi Kurnia Renny Puspita Sari Risa Nofiani Risa Nofiani Rizki Noviani Ridwan Rizky Noviani Ridwan Roberta Anjelia Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Salatiana Salatiana Saprianti, Siti Sari, Emilda Sari, Gladis Raspida Shofiyani, Anis Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Syahbanu, Intan Tariz Zharfan ME Thamrin Usman Thamrin Usman Titik Lestari Titin Anita Zahara Titin Anita Zahara, Titin Anita Titin Anita Zaharah Titin Anita Zaharah Tria Susanti Ummi Hanifah Uray Ristian Uul Warosatul Ambiya Warsi Kurnia Rahayu Warsidah Warsidah Wibowo, M. Agus Wibowo, Muhamad Agus Widiyananta, Surya Winda Rahmalia Winda Rahmalia Winda Rahmalia Yoga Pratama Yudha Arman Zaharah, Titin Anita