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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Eksakta : Berkala Ilmiah Bidang MIPA MASALIQ: Jurnal Pendidikan dan Sains Entalpi Pendidikan Kimia Jurnal Pengabdian Pada Masyarakat
Syamsi Aini
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Validity of Interactive learning PowerPoint Media based on Guided Inquiry on Thermochemistry Topic for Class XI SMA/MA Rizka Chairani Yasin; Syamsi Aini
Entalpi Pendidikan Kimia Vol 3 No 3 (2022)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/epk.v3i3.268

Abstract

Thermochemistry is one of the chemistry learning materials that is difficult for students to understand, so it requires a level of chemical representation in the learning process which is assisted by the presentation of interactive powerpoint media. This study aims to produce an interactive powerpoint learning media based on guided inquiry that is suitable for use for learning and can determine the level of validity of the interactive powerpoint learning media. The type of research used is Research and Development (R&D) with a 4D development model. The research instrument used was a validity questionnaire which was processed using the Aiken's V formula.
Penyuluhan Pembuatan Pupuk Bokashi dari Kotoran Ayam dan Abu Sekam di Nagari Mungka Trisna Kumala Sari; Riga Riga; Isra Yeni; Syamsi Aini; Desy Kurniawati; Romy Dwipa Yamesa Away; Melindra Mulia
Jurnal Pengabdian Pada Masyarakat Vol 7 No 4 (2022): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.794 KB) | DOI: 10.30653/002.202274.205

Abstract

COUNSELING ON MAKING BOKASHI FERTILIZER FROM CHICKEN MANURE AND HUSK ASH IN NAGARI MUNGKA. Community activities in the field of livestock are growing in Nagari Mungka, especially raising chickens. However, the processing of chicken manure waste is not handled properly. This may be due to the lack of public knowledge about this waste processing technique. This counseling aims to improve the knowledge and skills of chicken farmers in making bokashi fertilizer from chicken feces in Nagari Mungka, Lima Puluh Kota District. Bokashi fertilizer is a type of organic fertilizer that uses decomposers in the manufacturing process. The basic ingredients for this bokashi fertilizer are chicken feces, husk ash, bran and EM4. The counseling activity includes presentation of material, demonstration and evaluation of activity. Chicken farmers receive the knowledge about the benefits of bokashi fertilizer, how to make it and how to market it if it has the potential to be sold. This activity has a great influence on chicken farmers because this activity is very useful and right on target. Chicken farmers look enthusiastic in participating in the activities. The result of this community service activity is the increased knowledge and skills of breeders in processing chicken manure into bokashi fertilizer and have the desire to try and apply it.
Synthesis and Characterization of Sodium Aluminate from Aluminum and Sodium Hydroxide Dinalia, Dinalia; Syamsi Aini; Jon Efendi
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 04 (2025): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol26-iss04/627

Abstract

The synthesis of sodium aluminate from aluminum and sodium hydroxide was successfully conducted to optimize its potential as a precursor for zeolite production. Aluminum was reacted with NaOH solution under continuous stirring for five hours, with variations in pH and Al-to-NaOH molar ratio to determine optimal synthesis conditions. The highest aluminum conversion (94.33%) was achieved at pH 13.6 and an Al-to-NaOH molar ratio of 1:4. Fourier-transform infrared (FTIR) spectroscopy confirmed the formation of tetrahedral [AlO₄]⁻ units through characteristic aluminate vibrational bands at 624 and 727 cm⁻¹. X-ray diffraction (XRD) analysis revealed sharp reflections at 2θ ≈ 34.8°, corresponding to crystalline NaAlO₂ (JCPDS No. 33-1200), indicating high crystallinity and phase purity. Scanning electron microscopy coupled with energy-dispersive X-ray (SEM–EDX) analysis showed irregular plate-like crystalline particles with a near-stoichiometric Na:Al ratio (~1:1), confirming compositional homogeneity. Overall, optimized alkalinity and stoichiometry were found to be critical for producing highly crystalline and compositionally pure sodium aluminate, suggesting its suitability as a high-quality, environmentally friendly precursor for zeolite synthesis.
Karakterisasi Gelatin Halal dari Kulit Kepala Ikan Lele Dumbo (Clarias gariepinus) sesuai SNI 06-3735-1995 Putri Hanifa; Syamsi Aini
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6727

Abstract

The growing demand for environmentally friendly and halal-compliant gelatin in Indonesia necessitates the exploration of alternative sources based on organic waste. One such potential lies in the underutilized waste of the catfish (Clarias gariepinus) head skin. This study aims to synthesize and characterize halal gelatin derived from catfish head skin using asam kandis (Garcinia cowa) as a natural acid solvent through an acid-based extraction method. The extraction process consisted of three main stages: degreasing, demineralization, and extraction at 55°C. An experimental approach was employed to assess the physicochemical parameters of the extracted gelatin. The analysis revealed moisture content of 10.01%, ash content of 0.24%, fat content of 1.07%, pH of 5.60, gelling point of 13°C, melting point of 29°C, and viscosity of 6.0 cP, all of which comply with the Indonesian National Standard (SNI 06-3735-1995) for gelatin quality. FTIR characterization showed distinctive absorption spectra for Amide A (3276–2939 cm⁻¹), Amide I (1630 cm⁻¹), Amide II (1532–1447 cm⁻¹), and Amide III (1241 cm⁻¹), confirming successful collagen conversion into gelatin. In conclusion, catfish head skin presents promising potential as a halal, eco-friendly gelatin source that meets national quality standards.
Penentuan Kadar Besi (Fe), Mangan (Mn), dan Timbal (Pb) dalam Sampel Air Minum Menggunakan Atomic Absorption Spectrophotometry (AAS) Vivi Aprilia Putri; Syamsi Aini
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7561

Abstract

This study aims to determine the concentrations of heavy metals—iron (Fe), manganese (Mn), and lead (Pb) in drinking water samples using the Atomic Absorption Spectrophotometry (AAS) method. The research employed a descriptive quantitative approach, involving the preparation of standard solutions and the analysis of filtered drinking water samples. Measurement results indicated that the concentrations of Fe (–0.3714 mg/L), Mn (–0.1098 mg/L), and Pb (–0.5218 mg/L) were below the instrument’s detection limit, resulting in negative values. These findings suggest that the levels of heavy metals in the samples are extremely low and well below the maximum limits set by the Regulation of the Minister of Health of the Republic of Indonesia No. 2 of 2023: 0.3 mg/L for Fe, 0.1 mg/L for Mn, and 0.01 mg/L for Pb. The study concludes that the tested drinking water samples meet quality standards and are safe for consumption, posing no health risks from heavy metal exposure. Additionally, AAS proved to be an effective method for detecting trace metal concentrations, making it suitable for regular and sustainable water quality monitoring.
Efektivitas Penggunaan E-LKPD Materi Reaksi Redoks Berbasis Problem Based Learning terhadap Hasil Belajar Peserta Didik Fase E SMTI Padang Sampaikan Sabda Zebua; Syamsi Aini
MASALIQ Vol 6 No 3 (2026): MEI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v6i3.9899

Abstract

Although the integration of digital learning media has received attention in various previous studies, research that specifically discusses the effectiveness of Problem-Based Learning (PBL)-based E-LKPD in improving learning outcomes on redox reaction material remains limited. This study aims to evaluate the effectiveness of using PBL-based E-LKPD on redox reaction material on the learning outcomes of Phase E students at SMK SMTI Padang. This study used a quantitative approach with a pre-experimental design in the form of a one-group pretest-posttest design, involving 35 students selected using purposive sampling. Data were collected using a multiple-choice test instrument administered in the form of a pretest and posttest, then analyzed using the N-Gain test. The results showed a significant improvement in learning outcomes, with the average score increasing from 29.64 in the pretest to 88.39 in the posttest, and an N-Gain score of 0.83 in the high category. These findings contribute to the development of constructivism-based learning and expand understanding of the integration of digital media with problem-based learning. The conclusion of this study confirms that PBL-based E-LKPD is effective in improving students’ conceptual understanding and learning outcomes on redox reaction material. The implications of this study include theoretical contributions to digital learning innovation and practical implications for educators in improving the quality of chemistry learning through the use of PBL-based E-LKPD.
Co-Authors Ahdiatun Nuri Armelia Ananda Chatarina Umbul Wahyuni DESY KURNIAWATI Desyana Anggraeni Dinalia, Dinalia Fajar Sa'bandi Fila Delvia Isra Yeni Jon Efendi Miftahul Khair Muhammad Iqbal Alzain Mulia, Melindra Muthiara Wahyuni Nuranisah Nuranisah Putri Hanifa Ridha Santika Riga Riga Rizka Chairani Yasin Romy Dwipa Yamesa Away Sampaikan Sabda Zebua Trisna Kumala Sari Umar Kalmar Nizar Vivi Aprilia Putri Winda Selfira