Article Per Year (5 Year)
p-Index From 2021 - 2026
2.083
P-Index
This Author published in this journals
All Journal International Journal of Renewable Energy Development Jurnal Pengajaran MIPA Jurnal Penelitian Hasil Hutan Chemistry in Education Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) JPMI (Jurnal Pendidikan Matematika Indonesia) Jurnal Kartika Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) ALKIMIA : Jurnal Ilmu Kimia dan Terapan Ideguru: Jurnal Karya Ilmiah Guru Indo-MathEdu Intellectuals Journal el hayah jurnal studi islam Enrichment: Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) EL-HAYAH Analit: Analytical And Environmental Chemistry
Buchari Buchari
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

Published : 19 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 19 Documents
Search

 1   2 
Evaluation of Scan Rate Influence on Cyclic Voltammograms of Copper Electrodes Coated with PS-CS-GA/ZnO Nanocomposite Murniati, Anceu; Nur, Ilahi Hidayanti; Gumelar, Niki; Budiman, Senadi; Buchari, Buchari; Gandasasmita, Suryo; Nurachman, Zeily
Jurnal Kartika Kimia Vol 7 No 1 (2024): 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.v7i1.256

Abstract

Copper (Cu) is widely utilized as an electrode material due to its high conductivity and relatively low cost. This study aims to develop nanocomposite-modified Cu electrodes using polysulfone (PS), chitosan (CS), glutaraldehyde (GA), and zinc oxide (ZnO) to form PS-CS-GA/ZnO-NP modified Cu electrodes. The nanocomposite was prepared in the proportions of 48.8% PS, 24.4% CS, 24.4% ZnO, and 2.4% GA using the phase inversion method. The characterization of the PS-CS-GA/ZnO nanocomposite-modified Cu electrode was conducted using cyclic voltammetry with a 0.01 M K3[Fe(CN)6] in 0.1 M KCl. The cyclic voltammogram profile was obtained at a scan rate of 25 mV/s, exhibiting an ipa/ipc ratio of 0.93 within a potential of -1.5 to +0.4 V vs Ag/AgCl over 15 cycles. The FTIR spectrum of the PS-CS-GA/ZnO nanocomposite thin film displayed a peak at 1668 cm-1, indicating the presence of C=N groups, which suggests a cross-linking interaction between CS and GA.
Deoxyribo Nucleic Acid (DNA) in the Alquran Perspective Utari, Nahyulia Liza; Marini, Elis; Rahman, Achyar; Buchari, Buchari; Zulkarim, Zulkarim
International Journal of Multidisciplinary Research of Higher Education Vol 7 No 3 (2024): (July) Theme Education, Sciences, Engineering and Economic
Publisher : Islamic Studies and Development Center in Collaboration With Students' Research Center Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/ijmurhica.v7i3.221

Abstract

Biological facts have been mentioned in the Alquran, which was revealed over 1400 years ago and is proven correct by scientists today. This study focuses on implicit and explicit interpretations of human creation, biological development, and genetic concepts. By using a multidisciplinary approach that combines the maudhu'i method of interpretation, scientific and genetic approaches, as well as textual, intertextual, and contextual interpretation techniques. This study found a connection between Deoxyribo Nucleic Acid (DNA) and the Alquran that is implied in the concept of “nutfah”. The analysis shows that the Alquran mentions various fluids involved in the fertilization process, including sperm, poured fluid, hated fluid, and mixed fluid. This research emphasizes the role of Deoxyribo Nucleic Acid (DNA) as the “master key” that controls human physical and mental functions, and its interaction with the environment in activating certain genes. Deoxyribo Nucleic Acid (DNA) is understood as the “blueprint of life” that stores biological information and plays an important role in the transmission of hereditary traits.
MANAJEMEN PEMBELAJARAN KETERAMPILAN BERBAHASA ARAB DENGAN METODE ROLE PLAYING BAGI SANTRI KELAS IV KMI PONDOK PESANTREN AL IMAN WONOGIRI Buchari, Buchari
El-Hayah Vol. 8 No. 1 (2018): Juni 2018
Publisher : Pascasarjana UIN Raden Mas Said Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19305/elha.v8i1.4732

Abstract

Abstract : Research background reveals about speaking Arabic is important and must be mastered fluently by all students in Islamic Boarding School. This research aims at determining: 1) the planning of learning Arabic using role playing method at Islamic Boarding School Al Imam Wonogiri; 2) the implementation of learning  Arabic using role playing method at Islamic Boarding School Al Imam Wonogiri; 3) the evaluation of learning Arabic using role playing method at Islamic Boarding School Al Imam Wonogiri; 4) the development of learning Arabic using role playing method at Islamic Boarding School Al Imam Wonogiri.This research was descriptive qualitative. It was conducted at Islamic Boarding School of Al Iman Wonogiri. Informants of this research were Arabic teachers of Islamic Boarding School of Al Iman Wonogiri, especially 4th grades KMI and the Principal. Technique of collecting data used interview, observation, and documentation. Technique of data validity applied triangulation of source and method. Technique of data analysis used interactive model, including data collection, data reduction, data display and conclusion. The results of this research show that: 1) the planning of learning Arabic is done by summarizing purpose and objective of learning, choosing and determining learning subject, and also determining learning source or learning media; 2) the implementation of learning Arabic using Role Playing covering: the teachers create a group to practice role playing, explain learning theme to play role, give chances for students to discuss, monitor the students playing role, appreciate and evaluate learning activities. However, the teachers must be competent in their field; 3) the evaluation of learning Arabic using Role Playing is based on the following criteria: ability in speaking, writing, and mastering language formula, vocabulary, grammar, dialect, fluent speaking, carefulness in speaking and writing. The students should join test, assignment, housework or practice.       Keywords: Arabic learning, and Islamic Boarding School Al Iman Wonogiri
Pengembangan Instrumen untuk Meningkatkan Pemahaman Konseptual Mahasiswa dalam Memahami Operasi Bilangan Buchari, Buchari; Sandie, Sandie
Indo-MathEdu Intellectuals Journal Vol. 5 No. 4 (2024): Indo-MathEdu Intellectuals Journal
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/imeij.v5i4.1745

Abstract

This research aims to develop an instrument to improve conceptual understanding of number operation materials owned by prospective teachers at IKIP PGRI Pontianak. This research is a development research. The subjects in this study are students in the third semester of the Mathematics Education Study Program, Faculty of Education, Mathematics and Technology, as many as 20 students who were randomly selected. The main instrument is the researcher himself, while the supporting instruments are the task of number operation problems and interview guidelines. Data analysis is carried out descriptively on all data obtained. The results of the analysis show that the form and type of learning instrument that is suitable for improving students' conceptual ability, especially in the interpretation ability in number operation material, is a multiple-choice sample problem unit. Students' interpretation skills in number operations material are not good because they still have the opportunity to understand and apply the concept of operations on numbers. Learning instruments in the form of units of multiple-choice questions of the second type are practical to be applied with the aim of improving students' conceptual abilities, especially interpretation skills in number operation materials  
DEGRADASI LIMBAH AMOKSISILIN DENGAN OKSIDASI ELEKTROKIMIA YANG DIMEDIASI KOBAL III MENGGUNAKAN ELEKTRODA PLATINA, PLATINA-KOBAL HIDROKSIDA DAN PLATINA-KOBAL Herlina, Herlina; Sirumapea, Lasmaryna; Zulfikar, Muhammad Ali; Buchari, Buchari
Analit : Analytical and Environmental Chemistry Vol. 8, No. 01 April (2023) Analit: Analytical and Environmental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v8i1.2023.p88-99

Abstract

Degradasi amoksisilin (AMX) telah dipelajari melalui proses oksidasi elektrokimia di sel ruah menggunakan elektroda platina dan elektroda platina- dimodifikasi kobal sebagai anoda dan platina sebagai katoda. Proses degradasi AMX diselidiki dengan pengukuran HPLC. Oksidasi elektrokimia AMX menggunakan sel ruah skala laboratorium dengan penerapan tegangan 6 V, arus 1200 mA, dan volume larutan yang didegradasi 250 mL untuk konsentrasi awal AMX 1000 µM memberikan hasil yang cukup memuaskan, terutama untuk proses elektro-oksidasi sampel nyata limbah AMX menggunakan material anoda Platina-kobal dimediasi Co(III) dengan persen degradasi sebesar 99,03% selama 6 jam, anoda Platina-kobal(OH)2 sebesar 92,35% dan anoda Platina sebesar 76,91%. Ditemukan bahwa elektroda Platina-Kobal menunjukkan kemampuan mineralisasi yang baik dalam kondisi netral dalam larutan elektrolit Na2SO4 dengan penerapan tegangan oksidasi, waktu oksidasi dan variasi mediator. Kata Kunci: degradasi, amoksisilin, elektr okimia. oksidasi, platina
PENENTUAN KOEFISIEN SELEKTIVITAS ELEKTRODA SELEKTIF ION La (III) DENGAN HPMBP SEBAGAI IONOFOR Herlina, Herlina; Razali, Muhammad; Buchari, Buchari
Analit : Analytical and Environmental Chemistry Vol. 7, No. 02 October (2022) Analit : Analytical and Enviromental Chemistry
Publisher : Jurusan Kimia FMIPA Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aec.v7i02.2022.p145-156

Abstract

Selektivitas merupakan karakter elektroda yang paling penting, karena elektroda yang selektif dapat dipakai untuk mengukur analit walaupun terdapat ion pengganggu. Tingkat selektivitas ditentukan oleh nilai tetapan selektivitas potensiometrik. Penelitian mempelajari kinerja elektroda selektif ion La(III) dengan 1-fenil-3-metil-4-benzoil-5-pirazolon (HPMBP) sebagai ionofor, polivinil klorida (PVC) sebagai pendukung, DOP sebagai pemlastis, aliquat-336 klorida sebagai sisi anionik dan THF sebagai pelarut. Faktor Nernst dari elektroda tersebut adalah 51,931 [Cl-] + 11,239 mV/dekade konsentrasi dan koefisen korelasi r = 0,991. Pengukuran tetapan selektivitas elektroda ESI- La(III) dengan cara match potential method (MPM) memberikan hasil bahwa ion-ion logam golongan alkali dan alkali tanah keberadaannya relatif tidak mengganggu pengukuran ion La3+, sementara golongan transisi dalam dan unsur transisi luar (lantanida dan aktinida) dengan keberadaannya sebagai garam nitrat sangat mengganggu pengukuran ion La3+.Kata Kunci: ESI, MPM, potensiometri, tetapan selektivitas
Principal Leadership Practices in Strengthening Teacher Professionalism: Evidence from Primary Schools in Aceh Tamiang, Indonesia Buchari, Buchari; Siraj, Siraj; Khairani, Cut
Ideguru: Jurnal Karya Ilmiah Guru Vol. 10 No. 3 (2025): September 2025 Edition
Publisher : Dinas Pendidikan, Pemuda dan Olahraga Daerah Istimewa Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51169/ideguru.v10i3.2160

Abstract

This study examines how principal leadership practices strengthen teacher professionalism within the Guru Penggerak program in primary schools in Aceh Tamiang, Indonesia. Using a qualitative multi-case study design, data were collected from four schools through interviews, observations, and document analysis, and were analyzed using the Miles and Huberman interactive model. Findings show that principals enact integrated leadership practices strategic, instructional, transformational, and distributed to support teachers’ pedagogical, personal, social, and professional development. Strategic planning aligned professional development with school needs, while organizational structuring positioned Teacher Leaders as facilitators, mentors, and change agents. Instructional and transformational leadership practices, including coaching, supervision, and motivational support, contributed substantially to collaborative professionalism. Despite challenges such as limited infrastructure, teacher resistance, and administrative burdens, principals applied adaptive strategies such as flexible scheduling, simplified administration, and individualized mentoring. The study concludes that effective leadership is essential for cultivating extended professionalism among Teacher Leaders and provides actionable insights for strengthening the implementation of Indonesia’s educational reforms.
Association between Fasting Blood Glucose-HbA1c Ratio with Independence Status and Clinical Outcomes of Acute Ischemic Stroke Patients Fatwa, T. Reza; Imran, Imran; Buchari, Buchari
Enrichment: Journal of Multidisciplinary Research and Development Vol. 3 No. 9 (2025): Enrichment: Journal of Multidisciplinary Research and Development
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/enrichment.v3i9.588

Abstract

Background: Stroke remains the second leading cause of mortality worldwide and the primary contributor to long-term disability. The stress hyperglycemia, calculated as the fasting blood glucose (FBG)–HbA1c ratio, has been proposed as a marker reflecting acute metabolic imbalance relative to chronic glycemic status, with potential prognostic value in acute ischemic stroke. Objectives: This study aimed to evaluate the association between the FBG–HbA1c ratio and functional independence as well as clinical outcomes in acute ischemic stroke patients. Methods: An analytical observational study employing a cross-sectional design was conducted at Dr. Zainoel Abidin General Hospital. Consecutive sampling was utilized to recruit patients with acute ischemic stroke who fulfilled the inclusion criteria. The FBG–HbA1c ratio was calculated and analyzed in relation to functional independence using the Barthel Index (BI) and clinical outcome using the Modified Rankin Scale (mRS). Pearson Product Moment Correlation test was used to determine the relationship between these variables. Results: A total of 61 patients were included. The FPG–HbA1c ratio demonstrated a significant negative correlation with the Barthel Index (R = –0.43; p = 0.04) and a significant positive correlation with the mRS (R = 0.508; p = 0.03). Conclusion: The FBG–HbA1c ratio showed significant correlations with both functional independence and clinical outcomes, indicating its potential as a simple and reliable prognostic marker. A higher ratio reflects greater stress-induced hyperglycemia, which is associated with poorer neurological function and outcomes in acute ischemic stroke patients
Development of a Character Education-Based Mathematics E-Comic to Improve Elementary School Students’ Numeracy Literacy Skills Buchari, Buchari; Wiranty, Wiendi; Oktaviana, Dwi; Susiaty, Utin Desy
JPMI (Jurnal Pendidikan Matematika Indonesia) Vol 11, No 1 (2026): Volume 11 Number 1, March 2026
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/jpmi.v11i1.7904

Abstract

Numeracy literacy in Indonesia requires attention, as it remains low, as revealed in the Program for International Student Assessment (PISA) report. A mathematics learning process that can support mathematical abilities, particularly mathematical literacy, must be supported by the characteristics of media skills or tolls that can be adapted to the learning environment. This study aims to develop a mathematics e-comic based on character education to improve elementary school students’ numeracy literacy skills. The research employed a Research and Development (R&D) approach using a simplified Borg & Gall model consisting of seven stages: (1) identifying potential and problems, (2) data collection, (3) product design, (4) design validation, (5) design revision, (6) product trial, and (7) final product revision. The participants were 27 fifth-grade students of SD Negeri 55 Pontianak Barat. Research instruments included expert validation sheets, numeracy literacy tests, and student response questionnaires. The validation results indicated that the e-comic was highly feasible, with scores of 90.67% (content expert) and 93.33% (media expert). The trial results revealed significant improvement in students’ numeracy literacy. The average score for identifying relevant information increased from 64.20 to 92.59, applying whole number operations in real-life problems improved from 62.96 to 93.83, and presenting problem-solving processes with logical reasoning rose from 46.30 to 74.07. The overall average increased from 57.82 to 86.83, reflecting a 50.19% improvement. These findings proves that character education-based e-comic are effective in improving students’ numeracy literacy skills.Rancang Bangun E-Comic Matematika Berbasis Pendidikan Karakter Dalam Meningkatkan Kemampuan Literasi Numerasi Siswa di Sekolah DasarABSTRAKLiterasi numerasi di Indonesia perlu diperhatikan, karena masih rendah seperti yang diungkapkan dalam laporan Program for International Student Assessment (PISA). Proses pembelajaran matematika yang dapat menunjang kemampuan matematika terutama kemampuan literasi matematika tentunya harus didukung dengan karakteristik keterampilan media atau sarana yang dapat disesuaikan dengan kondisi lingkungan belajar. Penelitian ini bertujuan untuk mengembangkan e-comic matematika berbasis pendidikan karakter dalam meningkatkan kemampuan literasi numerasi siswa sekolah dasar. Model pengembangan yang digunakan adalah Borg & Gall yang disederhanakan menjadi tujuh tahap: (1) potensi dan masalah, (2) pengumpulan data, (3) desain produk, (4) validasi desain, (5) revisi desain, (6) uji coba produk, dan (7) revisi produk. Subjek penelitian adalah 27 siswa kelas V SD Negeri 55 Pontianak Barat. Instrumen penelitian terdiri atas lembar validasi ahli, tes literasi numerasi, dan angket respon siswa. Hasil validasi menunjukkan bahwa produk e-comic layak digunakan dengan skor rata-rata 90,67% (ahli materi) dan 93,33% (ahli media). Hasil uji coba terbatas menunjukkan adanya peningkatan signifikan pada kemampuan literasi numerasi siswa, ditunjukkan dengan skor rata-rata: indikator mengidentifikasi informasi relevan meningkat dari 64,20 menjadi 92,59, indikator menggunakan operasi hitung bilangan cacah meningkat dari 62,96 menjadi 93,83, dan indikator menyajikan proses penyelesaian dengan alasan logis meningkat dari 46,30 menjadi 74,07. Rata-rata keseluruhan meningkat dari 57,82 menjadi 86,83 (peningkatan 50,19%). Temuan ini membuktikan bahwa e-comic berbasis pendidikan karakter efektif meningkatkan kemampuan literasi numerasi siswa.Kata Kunci :e-comic; literasi numerasi; pendidikan karakter; sekolah dasar 
Co-Authors A.A. Ketut Agung Cahyawan W Agus Setiabudi Akhirudin Maddu Anceu Murniati Anna Permanasari Asep Rohiman, Asep Budiman, Senadi Chansyanah Diawati Cretin, Marc Didin Mujahidin Djeni Hendra Fatwa, T. Reza Gumelar, Niki Gustan Pari Herlina H Herlina Herlina HERNANI - Husain Sosidi Imran Imran Indra Noviandri Innocent, Christophe Khairani, Cut Lasmaryna Sirumapea Liliasari , Mamat Rachmat Marini, Elis Mr Sumar Hendayana Muhammad Ali Zulfikar Muhammad Ali Zulfikar Muji Harsini Nur, Ilahi Hidayanti Pirim Setiarso Rahman, Achyar Razali, Muhammad Sandie Saptadi DARMAWAN Siraj Siraj Suryo Gandasasmita Teddi Heryanto Utari, Nahyulia Liza Utin Desy Susiaty Wiendi Wiranty, Wiendi ZEILY NURACHMAN Zulkarim, Zulkarim