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All Journal Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Teknik Kimia USU Jurnal Pendidikan Sains The Journal of Experimental Life Sciences (JELS) Jurnal Riset Kimia Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Science and Technology Indonesia Walisongo Journal of Chemistry Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Teknik Kimia Jurnal Inovasi Teknik Kimia Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Journal of Disruptive Learning Innovation (JODLI) Jurnal Teknik Kimia USU Journal of Medical Science; Jurnal Ilmu Medis Rumah Sakit Umum Daerah dr. Zainoel Abidin, Banda Aceh
Nazriati Nazriati dkk.
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Dentistry Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Other

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Biosintesis dan karakterisasi nanopartikel tembaga oksida (CuO) menggunakan ekstrak rimpang kencur (Kaempferia galanga L.) Efrilia R Rahmawati; Nazriati Nazriati
Jurnal Teknik Kimia Vol 28 No 3 (2022): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v28i3.1232

Abstract

Penggunaan nanopartikel telah berkembang pesat dalam berbagai bidang menyebabkan kebutuhan nanopartikel meningkat. Nanopartikel menjadi material yang banyak diminati karena memiliki banyak keunggulan jika dibandingkan dengan material jenis lain seperti raw material dan material yang berukuran lebih besar dari nanopartikel. Salah satu nanopartikel yang dikembangkan adalah nanopartikel CuO. Nanopartikel CuO umumnya disintesis dengan metode kimia dan fisika. Metode kimia dan fisika memberikan dampak negatif bagi lingkungan. Alternatif metode yang dapat digunakan adalah biosintesis. Penelitian ini bertujuan untuk melakukan biosintesis nanopartikel CuO menggunakan ekstrak rimpang kencur (Kaempferia galanga L.). Ekstrak rimpang kencur (Kaempferia galanga L.) berperan sebagai agen capping dan penstabil dalam pembentukan nanopartikel CuO. Biosintesis nanopartikel CuO berhasil dilakukan dengan ditunjukkannya puncak-puncak pada difraktogram XRD pada sudut 2θ: 32,5°; 35,5°; 38,77°; 46,3°; 48,77°; 53,48°; 58,28°; 61,55°; 66,28°; 66,28°; 68,04°; 72,44°; 75,08°; dan 82,77° dan diperoleh pita serapan FTIR pada bilangan gelombang 594 dan 469 cm-1. Hasil Penelitian menunjukkan nanopartikel CuO memiliki ukuran partikel pada pH 10, 11, dan 12 secara berturut-turut sebesar 24,04; 23,84; dan 22,68 nm dengan morfologi berbentuk lempengan serta nilai energi celah pita nanopartikel CuO yang diperoleh sebesar 5,25 eV.
SINTESIS ZnO/SILIKA XEROGEL DAN APLIKASINYA Nazriati Nazriati; Siti Shohibul Wahidah
Jurnal Inovasi Teknik Kimia Vol 8, No 4 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i4.9057

Abstract

Abstrak Sintesis ZnO/silika xerogel dengan rasio massa yang berbeda dan aplikasinya untuk menurunkan kadar zat warna metilen biru. Metode yang digunakan untuk menurunkan kadar zat warna metilen biru adalah fotokatalis. Tahapan penelitian ini meliputi sintesis silika xerogel dengan metode sol-gel, sintesis ZnO/silika xerogel dengan metode lelehan garam, dan aplikasi ZnO/silika xerogel untuk menurunkan kadar zat warna metilen biru. Hasil analisis FT-IR menunjukkan adanya gugus fungsi silanol (Si-OH), siloksan (Si-O-Si) dan vibrasi Zn-O. Fakta ini didukung dengan hasil analisis XRD yang menunjukkan pola standar ZnO (JCPDS No. 36-1451) dan mengindikasikan adanya ZnO terdispersi di dalam matriks silika xerogel. Hasil uji SEM menunjukkan morfologi partikel yang terbentuk berupa batang (road) dan jarum (needle) dengan ukuran diameter partikel rata-rata sebesar 53,35 nm. Persentase penurunan kadar zat warna metilen biru dengan perbandingan komposisi 1:1 dan 1:2 yaitu sebesar 68,68% dan 69,12%.
The Effect of Student Worksheet-Assisted Project-Based Learning on Learning Outcomes and Critical Thinking in Moderation of Student Learning Motivation in Electrolytic Cell Putra, Vahemas Aditya pamila; Dasna, I Wayan; Nazriati, Nazriati
Journal of Disruptive Learning Innovation (JODLI) Vol 4, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um072v4i22023p122-132

Abstract

This study aims to discover the differences between learning outcomes and critical thinking skills between students who follow project-based Learning and conventional Learning. Second, to know the impact of project-based learning on student worksheets on learning outcomes and critical thinking in moderation of student learning motivation. The method used in the initiation is a quasi-experiment with a pretest-posttest control group design. The results show that (1) there are differences in learning outcomes between students who follow project-based learning and students who follow conventional learning; (2) there is a difference in critical thinking capabilities among students who go with project-based learning and conventional students; (3) motivation to moderate project-based learning to help students worksheets to improve student's learning outcomes; (4) motivation not to moderately project-driven Learning to help students' worksheets on critical think ability.
Biosintesis dan Karakterisasi Nanopartikel Seng Oksida (ZnO-NPs) Menggunakan Ekstrak Daun Kenitu (Chrysophyllum cainito L.) Syamsul Arifin, Fawaid; Nazriati
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.9127

Abstract

Nanoparticles are materials that have superior properties compared to similar materials that are larger in size when used as raw materials. One of the nanoparticles that is trending and has many applications is zinc oxide nanoparticles (ZnO-NPs). This study aimed to synthesize ZnO-NPs using kenitu leaf extract (Chrysophyllum cainito L.) and determine the effect of extract composition and pH on the size of ZnO-NPs. Kenitu leaf extract can prevent agglomeration in the synthesis of nanoparticles because it contains secondary metabolites such as antioxidants and polyphenols. ZnO-NPs were synthesized using green method by reacting kenitu leaf extract with zinc sulfate. The success of the synthesis was indicated by the similarity of the peaks of the synthesized compounds to the standard peaks of ZnO in X-Ray Diffraction (XRD) analysis and supported by the presence of Zn-O vibrations in the 405-768 cm-1 region in Fourier Transform Infra-Red (FTIR) analysis. Analysis of UV-Vis spectra showed that ZnO-NPs were relatively stable at wavelength of 308-330 nm with an absorption peak at 317 nm and a bandgap energy of 3.25 eV. The results of FTIR characterization showed the presence of vibrations of the carbonyl and hydroxy groups in kenitu leaf extract. The results of the Scanning Electron Microscope (SEM)  characterization showed that the ZnO-NPs synthesized using 10 mL kenitu leaf extract at pH 7 with 0.15 M zinc sulfate had predominantly spherical shape with a size of 14.10 nm. Based on experiment result addition of kenitu leaf extract may reduce the size of ZnO-NPs, while increase of mixture pH during formation reaction of ZnO-NPs may increase the size of ZnO-NPs.
Biosintesis dan Karakterisasi Nanopartikel Seng Oksida (ZnO-NPs) Menggunakan Ekstrak Daun Kenitu (Chrysophyllum cainito L.) Syamsul Arifin, Fawaid; Nazriati
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.9127

Abstract

Nanoparticles are materials that have superior properties compared to similar materials that are larger in size when used as raw materials. One of the nanoparticles that is trending and has many applications is zinc oxide nanoparticles (ZnO-NPs). This study aimed to synthesize ZnO-NPs using kenitu leaf extract (Chrysophyllum cainito L.) and determine the effect of extract composition and pH on the size of ZnO-NPs. Kenitu leaf extract can prevent agglomeration in the synthesis of nanoparticles because it contains secondary metabolites such as antioxidants and polyphenols. ZnO-NPs were synthesized using green method by reacting kenitu leaf extract with zinc sulfate. The success of the synthesis was indicated by the similarity of the peaks of the synthesized compounds to the standard peaks of ZnO in X-Ray Diffraction (XRD) analysis and supported by the presence of Zn-O vibrations in the 405-768 cm-1 region in Fourier Transform Infra-Red (FTIR) analysis. Analysis of UV-Vis spectra showed that ZnO-NPs were relatively stable at wavelength of 308-330 nm with an absorption peak at 317 nm and a bandgap energy of 3.25 eV. The results of FTIR characterization showed the presence of vibrations of the carbonyl and hydroxy groups in kenitu leaf extract. The results of the Scanning Electron Microscope (SEM)  characterization showed that the ZnO-NPs synthesized using 10 mL kenitu leaf extract at pH 7 with 0.15 M zinc sulfate had predominantly spherical shape with a size of 14.10 nm. Based on experiment result addition of kenitu leaf extract may reduce the size of ZnO-NPs, while increase of mixture pH during formation reaction of ZnO-NPs may increase the size of ZnO-NPs.
Synthesis and Characterization of Hydroxyapatite Composites Based on Tutut (Belamya Javanica) and Magnetite by Coprecipitation as Adsorbents of Pb Metals Ion Charlena; Nazriati; Marita Soebrata, Betty; Dicky Iswara, Muhammad
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.1.111-122

Abstract

Increased industrial activity can result in the emission of pollutants into the environment, such as heavy metals, which are a significant source of concern. A practical approach to reduce this problem is to utilize Pb metal adsorption. This study aims to synthesize HAp from Bellamya javanica clam shells and characterize the HAp-Fe3O4 composite as a Pb metal ion adsorbent. FTIR and XRD analysis results showed the successful fabrication of the composite, resulting in a crystal dimension of 7.63 nm and a crystallinity level of 84.80%. SEM characterization showed a porous structure with a particle size of 10.98 um. Adsorption studies of Pb(II) ions showed that the HAp-Fe3O4 composite efficiently adsorbed Pb(II) ions, with the adsorption efficiency increasing from 95.80% to 98.40%. The adsorption isothermal model of the HAp-Fe3O4 composite follows the Freundlich model with a 1/n value of 0.31 and a KF value of 25.35 L/g. The adsorption kinetics study of the HAp-Fe3O4 composite follows the pseudo second-order model with an R2 value of 1, and the thermodynamic study shows the Gibbs free energy is negative, which indicates that the adsorption process is thermodynamically optimal and spontaneous. In addition, the enthalpy value is positive, indicating that the interaction between the adsorbent and lead ions is endothermic, and the entropy is negative, indicating the reduction of random collisions of lead ions in the solid (adsorbent) and aqueous solution during adsorption.
Pengaruh Terapi Qur'anic Healing dengan Glasgow Coma Scale dan Vital Sign pada Pasien Penurunan Kesadaran di RSUD dr. Zainoel Abidin Fithriany; Sabrizal Ishak; Rima Novita Sari; Nasaie; Firly Ratsmita; Nazriati
Journal of Medical Science Vol 4 No 1 (2023): Journal of Medical Science
Publisher : LITBANG RSUDZA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55572/jms.v4i1.74

Abstract

Qur’anic healing merupakan sebuah teknik terapi penyembuhan dengan cara membacakan ayat-ayat Al-Quran yang mu’tabaroh kepada pasien sesuai  ketentuan Al-Quran dan As-Sunnah sebagaimana dicontohkan pada masa Rasulullah SAW.Penurunan kesadaran merupakan kondisi dimana otak mengalami defisiensi fungsi yang disebabkan oleh berbagai macam penyakit seperti stroke, diabetes melitus, trauma, sepsis dan lain-lain. Penelitian ini dilakukan diruang  High Care Unit Medical RSUDZA dengan responden pasien yang mengalami penurunan kesadaran akibat sepsis. Penelitian ini bertujuan untuk mengetahui pengaruh terapi qur’anic healing dalam mempengaruhi outcome pasien dengan penurunan kesadaran akibat sepsis menggunakanGlasgow Coma Scale(GCS) dan Vital Sign. Metode penelitianQuasi Experimentaldengan two grup pre-post test design dan teknik pengambilan sampel consecutive sampling dengan subjek penelitian sesuai kriteria inklusi dan eklusi. Subjek penelitian sebanyak 24 responden dibagi dua kelompok perlakuan. Kelompok satu 12 reponden mendapatkan perlakuan terapi qur’anic healing dilakukan langsung oleh ustadz/ah, kelompok dua 12 reponden mendapatkan perlakuan terapi qur’anic healing dengan cara memperdengarkan audio. Hasil analisis uji-T yang membandingkan perubahan GCS dari dua metode perlakuan secara langsung atau memperdengarkan audio menunjukkan p-value= 0,001 (≤0,05). Dapat disimpulkan bahwa perbedaan GCS metode langsung dan audio adalah nyata. Sedangkan Uji mann whitney membandingkan perubahan vital sign dari dua metode perlakuan, menunjukkan ada pengaruh metode terhadap perubahan vital sign. Hasil uji mann whitneyberturut turut systole, diastole, nadi, respirasi, dan suhu=0.317, 0.317, 1.00, 1.00, 0.546 yang semuanya > dari 0.05 maka perbedaan vital sign metode langsung dan audio adalah tidak nyata. Walaupun tidak nyata ada kecenderungan vital sign dari metode langsung lebih baik dibandingkan metode audio di setiap aspek yang diamati kecuali di aspek nadi yang perubahan keduanya sama. Kesimpulan pada penelitian ini adalah terapi qur’anic healing berpengaruh terhadap kestabilan vital sign sertapeningkatan GCS pada pasien yang mengalami penurunan kesadaran.
Textile Industry Waste Pollution in the Konto River: A Comparison of Public Perceptions and Water Quality Data Adjid, Galang Ayuz Firstian Adjid; Kurniawan, Andi; Nazriati, Nazriati
The Journal of Experimental Life Science Vol. 12 No. 3 (2022)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jels.2022.012.03.05

Abstract

Textile industry production activities in one of the Badas areas can have implications for the occurrence of dye liquid waste pollution in the Konto river flow. This implication leads to the public perception that there has been river pollution from textile dyeing liquid waste. In this case, public perceptions need to be analyzed as a form of river environmental monitoring activities. Therefore, public perceptions of pollution were compared with actual water quality data, especially related to dyes in river water, to link public perceptions with environmental resource management efforts. This study aims to analyze public perceptions of textile dye waste pollution and compare the analysis results with the river water quality analysis. Analysis of river water quality (dye content, BOD, COD) was conducted at five sampling points in Badas, Kuwik, Balungjeruk, and Wonorejo villages. Public perception was measured descriptively through interviews with respondents referring to the Slovin method. The analysis of public perceptions shows that the Public considers that there has been pollution of river water, mainly due to textile industry waste, along the Konto River. The results of the water quality analysis showed that dye concentrations were found at four sampling points except for Wonorejo Village. This result shows that the correlation between public perception and data on dye contamination only occurs in Badas, Kuwik, and Balungjeruk villages. In addition, the BOD/COD ratio indicates that pollution has occurred at all observation points in this study. Keywords:  Aquatic Ecosystem, Dyes, Pollution, Public Perception, Waste.
Sintesis Nanohibrida Silika-urea Berbasis Abu Bagasse sebagai Pupuk Lepas Lambat Ramah Lingkungan Siti Muslimah; Nazriati; Neena Zakia
Jurnal Teknik Kimia USU Vol. 14 No. 2 (2025): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v14i2.21629

Abstract

The urea–silica nanohybrid is an innovative slow-release fertilizer designed to enhance nitrogen use efficiency in agriculture. This study synthesized the nanohybrid using silica sourced from bagasse ash via the sol-gel method. Silica was extracted by reacting the ash with sodium hydroxide to form sodium silicate, which was then converted into silicic acid through ion exchange using a cation resin. Ammonium hydroxide was added to adjust the pH to 5, forming a gel at room temperature. The gel was aged for 18 hours to strengthen its structure, then freeze-dried to produce hydrophilic silica aerogel. To form the nanohybrid, 1 g of silica aerogel was mixed with urea at varying concentrations, stirred for 24 hours, filtered, and dried at 40 °C. Characterization using Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of Si–O–Si and Si–OH groups, along with urea-specific bands (C=O and N–H), indicating successful integration of urea into the silica matrix.
Sintesis Nanohibrida Silika-urea Berbasis Abu Bagasse sebagai Pupuk Lepas Lambat Ramah Lingkungan Siti Muslimah; Nazriati; Neena Zakia
Jurnal Teknik Kimia USU Vol. 14 No. 2 (2025): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v14i2.21629

Abstract

The urea–silica nanohybrid is an innovative slow-release fertilizer designed to enhance nitrogen use efficiency in agriculture. This study synthesized the nanohybrid using silica sourced from bagasse ash via the sol-gel method. Silica was extracted by reacting the ash with sodium hydroxide to form sodium silicate, which was then converted into silicic acid through ion exchange using a cation resin. Ammonium hydroxide was added to adjust the pH to 5, forming a gel at room temperature. The gel was aged for 18 hours to strengthen its structure, then freeze-dried to produce hydrophilic silica aerogel. To form the nanohybrid, 1 g of silica aerogel was mixed with urea at varying concentrations, stirred for 24 hours, filtered, and dried at 40 °C. Characterization using Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of Si–O–Si and Si–OH groups, along with urea-specific bands (C=O and N–H), indicating successful integration of urea into the silica matrix.
Co-Authors A'yun, Amalia Qurrata Adilah Aliyatulmuna Adjid, Galang Ayuz Firstian Adjid Adrian Nur Ahmad Gilang Indra Salam Aman Santoso Andi Kurniawan Arif Jumari Armiati, Sri Eni Aunurrahman Aunurrahman Azhar, Istighfarin Meilidya Bertalina Timanoyo Charlena Ciptawati, Endang Danar Danar Dicky Iswara, Muhammad Effendy Effendy Effendy Effendy Effendy Effendy Efrilia R Rahmawati Fania Faradila Yuniarizky Fauziatul Fajaroh Firly Ratsmita Fithriany Hayuni Retno Widarti I Wayan Dasna Indri Astuti Isnaini Yunitasari Jundi Rofi’uddien Kusumaningrum, Irma Kartika Lailatur Rizqiyah Marita Soebrata, Betty Muhammad Abdul Basir Nasaie Neena Zakia Nur Adrian Nuril Mega Musfita Pangestutia, Citra Pramestiardhiani Putra, Vahemas Aditya pamila Rahayu Isma Rima Novita Sari Sabrizal Ishak Santana, Rosanina Kartika SITI MUSLIMAH Siti Shohibul Wahidah Suharti Sumari Sumari Syamsul Arifin, Fawaid Yahmin Yahmin Yudhi Utomo