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All Journal JCER (Journal of Chemistry Education Research) Gunung Djati Conference Series Unesa Journal of Chemistry Jurnal Akademika Kimia KREATIF: Jurnal Pengabdian Masyarakat Nusantara
HANISAH HASIBUAN
Universitas Negeri Medan
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Other

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Biosintesis Nanopartikel ZnO menggunakan Ekstrak Daun Betadin (Jatropha multifida L.) untuk Identifikasi Sidik Jari Laten SRI ADELILA SARI; MUHAMMAD RUDI AR; HANISAH HASIBUAN; NUR HARLIANDA; ELVI SAYANI
Gunung Djati Conference Series Vol. 34 (2023): Prosiding Seminar Nasional Kimia Tahun 2023
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Karena pentingnya penegakan hukum, identifikasi sidik jari laten adalah topik terbuka yang menarik lebih banyak perhatian. Kehadiran seseorang di Tempat Kejadian Perkara (TKP) dapat ditentukan melalui sidik jari laten. Sidik jari laten dapat memberi polisi informasi yang dapat membantu mereka menangkap penjahat. Banyak formulasi bubuk sidik jari yang berbeda telah digunakan secara luas selama ini, dengan masing-masing formula terdiri dari zat resin dan pewarna kontras. Metode yang paling banyak digunakan untuk pengembangan sidik jari laten di masa lalu adalah pencelupan perak nitrat, yodium asap, pencelupan ninhidrin, dan bubuk debu. Metode kuno ini bekerja dengan baik pada berbagai permukaan. Para ilmuwan telah bekerja untuk mengembangkan teknik yang lebih akurat untuk visualisasi cetakan laten karena metode konvensional untuk deteksi cetakan laten tidak selalu berhasil. Beberapa zat yang digunakan untuk membuat bubuk sidik jari beracun dan mungkin berbahaya bagi kesehatan manusia. Studi ini menawarkan cara penggunaan ZnO yang dikombinasikan dengan proses produksinya dan dimodifikasi dengan ekstrak daun betadin untuk menghasilkan zat bubuk sidik jari yang aman dan tidak beracun. Hasil penelitian ini menunjukkan bahwa ikatan Zn-O, gugus OH, gugus C-N, gugus C=O, serta adanya regangan N-O terdapat pada ekstrak daun betadin pada uji FTIR. Dengan demikian, maka temuan yang disajikan disini dapat menjadi titik awal untuk penyelidikan investigasi yang lebih canggih.
Kesenjangan Kesiapan Petani terhadap Teknologi Biogas Tongkol Jagung: Tinjauan Pengetahuan, Sikap, Keterampilan, dan Harapan Sri Adelila Sari; Nur Basuki; Amrizal Amrizal; Ali Fikri Hasibuan; Hanisah Hasibuan; Feri Yuni Asiyah Kabeakan; Rani Febriana; Elena Hasian Sitompul; Ribka Eliada Sitorus; Deby Febriyanti
KREATIF: Jurnal Pengabdian Masyarakat Nusantara Vol. 5 No. 2 (2025): Jurnal Pengabdian Masyarakat Nusantara
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/kreatif.v5i2.6127

Abstract

Corn cob waste poses a potential environmental problem and is an underutilized resource. Converting corn cobs into biogas offers a dual solution: managing waste while providing a renewable energy source for farmers. This study was aimed to assess the knowledge, attitudes, skills, and expectations of corn farmers regarding the processing of corn cob waste into biogas. The research was conducted in Desa Maholida, Sttu Jehe, Pakpak Bharat, using a descriptive survey method. A total of 40 corn farmers taken from several farmer groups in the village were selected as respondents. The instrument used was a closed questionnaire with a Likert scale comprising 5 items each to measure these four aspects (knowledge, attitudes, skills, expectations). Study findings indicated that farmers' knowledge, attitudes, and skills respectively showed low percentages, namely 27%, 35%, and 22%. These low levels constituted a significant barrier to the effective adoption and sustainability of the biogas program. On the other hand, all respondents (100%) expressed high optimism that the biogas program could improve their quality of life. This study reveals challenges in adopting corncob biogas technology, the gap between farmers' aspirations and implementation capacity. It recommends targeted socialization and training to enhance biogas adoption, environmental sustainability, farmers' welfare.
Development of a Chromatography Textbook Based on Project-Based Learning Using an Ethnoscience Approach with Augmented Reality Hanisah Hasibuan; Sri A. Sari; Marudut Sinaga
Jurnal Akademika Kimia Vol. 15 No. 2 (2026)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2026.v15.i2.pp86-96

Abstract

Advances in chemistry during the Fourth Industrial Revolution demand learning that integrates concept mastery with 21st-century skills, yet current materials rarely combine local wisdom and digital technology. This study aimed to develop a chromatography textbook based on Project-Based Learning (PjBL), using an ethnoscience approach and Augmented Reality (AR), suitable for learning. The Research and Development (R&D) method, using the 4D model (Define, Design, Develop, Disseminate), was employed. The pilot study involved 20 Chemistry Education students, with expert validation sheets and student response questionnaires as instruments. The results of the expert validation indicated that this textbook is highly suitable, with an average content suitability percentage of 93.75%, graphic suitability of 93.75%, presentation suitability of 94.84%, and linguistic suitability of 100%. A pilot test conducted on a small group revealed highly positive student responses, with an average score of 3.88 (97.02%). These findings imply that integrating PjBL, ethnoscience, and AR can effectively support contextual, student-centered, and technology-enhanced chemistry learning. In practice, this approach can serve as a model for developing innovative instructional materials for other chemistry topics and for supporting curriculum transformation toward 21st-century skills.
IMPLEMENTATION OF PjBL-ETHNOSCIENCE-BASED CHROMATOGRAPHY TEXTBOOK WITH AUGMENTED REALITY SUPPORT TO IMPROVE CRITICAL THINKING SKILLS Sri Adelila Sari; Hanisah Hasibuan; Corrienna Abdul Talib
JCER (Journal of Chemistry Education Research) Vol. 10 No. 1 (2026): Volume 10 No. 1 June 2026
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v10n1.p13-20

Abstract

The purpose of this study was to examine how using a chromatography textbook based on Project-Based Learning (PjBL) combined with ethnoscience and augmented reality (AR) improved students' critical thinking abilities. This study employed a single-group pretest-posttest pre-experimental design and a quantitative methodology. Out of the 192 students in the population, 32 chemical education students were chosen for the sample using purposive sampling. A ten-item essay test that was modified from Ennis' indications was used to measure critical thinking abilities. N-Gain analysis and the Shapiro-Wilk normality test were used to examine the data. The data were found to be regularly distributed (Sig. = 0.458 > 0.05). With an N-Gain of 0.70, which is considered high, the average pre-test score rose from 56.96 to 87.03 on the post-test. These results show that students' critical thinking abilities were successfully enhanced by the created textbook.
PEMANFAATAN SENYAWA KOMPLEKS FE KELAT (EDTA, DTPA, EDDHA, AMINO) DALAM BIDANG PERTANIAN: SEBUAH TINJAUAN Hanisah Hasibuan; Anjany Tasya Br Tarigan; Iis Siti Jahro; Nurfajriani
Unesa Journal of Chemistry Vol. 14 No. 2 (2025): Vol 14 No 2 (2025)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ujc.v14n2.p41-49

Abstract

This study discussed the use of iron (Fe) complex compounds in the form of chelates such as EDTA, DTPA, EDDHA, and amino chelates to overcome Fe deficiency in plants. Fe deficiency often occurs in soils with high pH or calcareous soils, which can be seen from chlorosis in leaves and decreased productivity. This study was aimed to review the synthesis, stability, agronomic effectiveness, and environmental impact of various types of Fe chelates. The methods used in this study were literature studies, with data sources covering articles from 2016 to 2025, with a particular focus on articles discussing the use of Fe chelates in plants. The findings of this study indicated that Fe-EDTA works well at low to moderate pH levels but is less stable in alkaline soils. Fe-DTPA showed moderate stability up to pH 7, while Fe-EDDHA had high stability even at pH 9, making it more suitable for calcareous soils. More environmentally friendly alternatives such as Fe-amino chelates have been proven to be more easily absorbed, have a positive impact on the environment, and also function as biostimulants. Therefore, further research is recommended to explore the development of environmentally friendly and effective Fe-chelates in alkaline soils to reduce residues from synthetic materials.
Co-Authors Ali Fikri Hasibuan Amrizal Amrizal Anjany Tasya Br Tarigan Corrienna Abdul Talib Deby Febriyanti Elena Hasian Sitompul Elvi Sayani Feri Yuni Asiyah Kabeakan Iis Siti Jahro Marudut Sinaga MUHAMMAD RUDI AR Nur Basuki NUR HARLIANDA Nurfajriani Rani Febriana Ribka Eliada Sitorus Sri A. Sari Sri Adelila Sari*