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All Journal Jurnal Pendidikan Kimia Indonesia Jurnal Matematika & Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Akademika Kimia Jurnal SOLMA Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Jurnal Ilmiah Kanderang Tingang Journal of Educational Chemistry (JEC) Patria : Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Pendidikan MIPA Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Mattawang: Jurnal Pengabdian Masyarakat JSEP (Journal of Science Education and Practice) Jurnal Akademika Kimia Jurnal Ilmu Pendidikan Indonesia JIPI (Jurnal IPA dan Pembelajaran IPA) Mitra Sains Jurnal Akademika Kimia Jurnal Pendidikan MIPA Jurnal Abdimas Ilmiah Citra Bakti
Daud Karel Walanda
Pendidikan Kimia FKIP Universitas Tadulako Palu Indonesi 94119
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Utilisation of Biochar from Kapok Randu (Ceiba pentandra) Branches for Decolourisation of Remazol Red in Water Dasi, Alfina D. A.; Napitupulu, Mery; Walanda, Daud K.; Rahmawati, Sitti
Jurnal Akademika Kimia Vol. 15 No. 1 (2026)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2026.v15.i1.pp1-8

Abstract

Synthetic dyes such as remazol red are commonly used in the batik process, but their residual waste is a major contributor to water pollution. These effluents can degrade water quality, damage aquatic ecosystems, and pose health risks to humans. This research aims to reduce these problems by using an adsorption method that utilises kapok randu branch as an adsorbent for remazol red dye. Kapok randu branches were pyrolysed at temperatures of 400 °C, 450 °C, and 500 °C. This study aims to measure the ability of biochar from kapok randu branches to adsorb remazol red dye under varying weight, time, and pH conditions. The results showed the characteristics of kapok randu branches biochar include moisture content of 400 °C, 450 °C and 500 °C biochar of kapok randu branches of 5.56 %, 5.01 % and 4.80 %, respectively. The ash content of the 400 °C, 450 °C, and 500 °C kapok randu branch biochar was 5.68 %, 6.66 %, and 7.24 %, respectively. The maximum weight of kapok randu branch biochar in adsorbing remazol red dye is 25 mg with an adsorption capacity of 0.312 mg/g. The maximum contact time required was 60 minutes with an adsorption capacity of 1.004 mg/g. The maximum pH for the remazol red dye during the adsorption process was at pH 4, with an adsorption capacity of 5.816 mg/g.
Psychometric Evaluation of Culturally Responsive Numeracy and Problem-Solving Assessment: A Rasch Modeling Approach Suciati, Indah; Walanda, Daud Karel; Idris, Mustamin; Napitupulu, Mery; Anggraini, Anggraini; Lefrida, Rita; Walanda, Richard Albert
Jurnal Pendidikan MIPA Vol 27, No 1 (2026): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v27i1.pp357-382

Abstract

The quality of measurement in educational research is highly dependent on the validity and reliability of the instruments used. However, in practice, many numeracy literacy and problem-solving instruments have not undergone adequate psychometric testing, particularly those that use cultural contexts as question stimuli. This study aims to develop and evaluate instruments for numeracy literacy and problem-solving in sequences and series, grounded in cultural context/local wisdom, using a research and development approach and Rasch modeling. The instrument's content validity was assessed through expert review by learning evaluation experts, mathematics education lecturers, and cultural experts (traditional councils). The analysis was conducted using the average validator score, Aiken's V coefficient, and percentage agreement to ensure the appropriateness of the substance, clarity of language, instrument appearance, and the appropriate integration of cultural context. Empirical trials were conducted in small groups with 71 high school students in grade X with 15-17 years in three regions in Indonesia: Palu City, Donggala Regency, and Sigi Regency, who were selected purposively. The test data were analyzed using Rasch modeling to evaluate item suitability, difficulty level, reliability, separation index, unidimensionality, and potential bias through DIF analysis. The analysis results showed that the developed instrument had very high content validity, strong person and item reliability, and that most items fit the Rasch model. However, the distribution of item difficulty did not fully cover the extreme range of respondents' abilities, and indications of DIF were found in some items in one area, indicating the need for further refinement. Thus, the developed numeracy literacy and problem-solving instrument was deemed suitable based on initial findings at the development stage; however, it still requires further revision and testing before being widely used in a more diverse population. Keywords: numeracy literacy, problem-solving, rasch model, reliability, validity.
PELATIHAN MANAJEMEN REFERENSI BERBASIS MENDELEY DAN ZOTERO UNTUK MENDUKUNG PENYUSUNAN ARTIKEL ILMIAH DOSEN AKADEMI BINA FARMASI PALU Napitupulu, Mery; Walanda, Daud Karel; Anshary, Alam; Napitupulu, Nurasyah Dewi; Pasaribu, Marungkil; Poba, Detris; Reny, Reny
Jurnal Abdimas Ilmiah Citra Bakti Vol. 7 No. 1 (2026)
Publisher : STKIP Citra Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38048/jailcb.v7i1.6279

Abstract

Permasalahan utama yang dihadapi dosen Akademi Bina Farmasi Palu adalah keterbatasan pemahaman dan keterampilan dalam mengelola referensi ilmiah secara sistematis menggunakan perangkat lunak manajemen referensi. Kondisi ini menyebabkan proses penulisan artikel ilmiah menjadi kurang efisien, terutama dalam pengelolaan sitasi dan penyusunan daftar pustaka sesuai standar penulisan ilmiah. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan kompetensi dosen dalam memanfaatkan perangkat lunak manajemen referensi guna mendukung penyusunan artikel ilmiah yang berkualitas. Mitra kegiatan adalah dosen Akademi Bina Farmasi Palu. Kegiatan dilaksanakan dalam bentuk pelatihan dan bimbingan teknis yang dilaksanakan secara langsung melalui presentasi materi dan praktik penggunaan aplikasi manajemen referensi seperti Mendeley dan Zotero. Materi pelatihan meliputi pengenalan perangkat lunak manajemen referensi, teknik pelacakan sumber literatur dari basis data ilmiah, pengelolaan sitasi otomatis, serta integrasi perangkat lunak manajemen referensi dengan perangkat pengolah kata. Kegiatan juga dilengkapi dengan sesi pendampingan teknis untuk membantu peserta mengatasi kendala dalam penggunaan aplikasi. Hasil kegiatan menunjukkan adanya peningkatan pemahaman dan keterampilan peserta dalam mengelola pustaka digital, melakukan sitasi secara otomatis, serta menyusun daftar pustaka sesuai gaya penulisan ilmiah. Peserta juga menunjukkan kemampuan yang lebih baik dalam memanfaatkan aplikasi manajemen referensi untuk mendukung proses penulisan artikel ilmiah. Dengan demikian, kegiatan pelatihan ini berkontribusi dalam meningkatkan kualitas penulisan ilmiah dosen serta mendukung penguatan budaya publikasi akademik di Akademi Bina Farmasi Palu.
Co-Authors AA Sudharmawan, AA Afadil Alam Anshary Alep, Boni Alizah, Nur Almahdali, Khafifah Amalia, Maryam Anang Wahid M.Diah Anggraini Anggraini Anggraini, Windi Arwansyah Arwansyah Baharuddin Hamzah Baloga, Hendra Bau Ratu Berlin, I Dewa Gede Darsikin Darsikin Dasi, Alfina D. A. Delviana Melego Detris Poba Dewi, Evie Kurnia Maya Dewijayanti, Putu W. Djahir, Ahmad Rifaldi Djulia Onggo Eka Dewi Ellak I. von Nagy-Felsobuki Emi Sulmeni Enar, Rohmala Finta Amalinda Finta Amalinda Fitriani, Eva Geoffrey A. Lawrance Griffiths, Zoe Hasmawati Hasmawati I Ketut Suada I Komang Jati Purnawan I Komang werdhiana I W. A. Wirawan Irwan Irwan Irwan Said Ismail Ismail Kasmudin Mustapa Kusuma, I Gede Yoga Nata Leonardo Leonardo Marungkil Pasaribu Mery Napitupulu Miryam B. Kalase Mohammad Jamhari Muhammad Agus Muljanto Mustakim, Sartika MUSTAMIN IDRIS Nakazawa, Koyomi Napitupulu*, Mery Napitupulu, Nurasyah D Ni Luh Cicik Fitriani Novianti Patiung Nur A. O. Buhang Nurasyah Dewi Napitupulu Nurdin Rahman Nurhikma, Nurhikma Poba, Detris Podala, Katherina Pongenda, Rudy Christiyanto Purnama Ningsih Putra, Iim E. Rahma, Sri Ratman Ratman Razni, Razni Reny, Reny Rimah Juwita Rita Lefrida Robert C. Burns Rukmawati Rukmawati Ryka Marina Walanda Setiawan, I Ketut Ardi Siang Tandi Gonggo Siang Tandi Gonggo Siti Nuryanti Sitti Aminah Sitti Rahmawati Solfarina, Solfarina Sri Hastuti Virgianti Pulukadang Sri Mulyani Sabang Suciati, Indah Suhartini Musa Supriadi Supriadi Susilawati, Niluh Eka Syamsiar, Syamsiar Tahril Taslima Tiara Maharani, Tiara Tiwow, Vanny M A Trisnawati Trisnawati Tudjuka, Mora Delfita Uswatun Hasanah Wagiman, Saumadin Walanda, Richard Albert Walanda, Ryka M Walanda, Ryka M. Yeyet Sri Rahmi Yuli Nurmayanti Yulianti, Iluh Devi