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All Journal International Journal of Advances in Applied Sciences KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Jurnal Ilmiah Ilmu Terapan Universitas Jambi Jurnal Pendidikan IPA Indonesia
Zain, Zahida Aliatu
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Earth & Planetary Sciences Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics

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Functional Group Analysis of Silica Gel Based on River Sand Magnetic Mineral as Heavy Metal Absorbance Meiliyadi, Lalu Ahmad Didik; Rahman, Muh. Zainur; Zain, Zahida Aliatu
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 9 No 01 (2024): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v9i01.484

Abstract

Functional group analysis of silica gel synthesized from river sand magnetic minerals using the sol-gel method was conducted. River sand magnetic mineral samples were taken from Sompang River, Lombok. The synthesis method used is a sol-gel method with variation of HCl acid 10 M and NH4OH base 10 M. Morphological characterization using a Scanning Electron Microscope (SEM) and mineral content analysis using Energy Dispersive X-ray (EDX). The morphology of the resulting silica gel is granular, showing crystalline properties with a silica concentration of 77.99 ± 0.17 atomic percent. Silica functional groups before absorption showed three stretching vibrations, namely OH group stretching vibrations in Si-OH and H2O at an absorption wavelength of 3669.77 cm-1, Si-O stretching vibrations from siloxane (Si-O-Si) at an absorption wavelength of 2858.51 cm-1 and Si-O asymmetric stretching vibrations from silanol (Si-OH) at an absorption wavelength of 962.88 cm-1. While the results of the analysis of silica gel after absorption show that almost all samples have vibrational absorption in the range of 400-500 cm-1. Other vibrational absorptions in silica samples that have been used as water filters indicate that the bonding between nano-silica as an absorber and heavy metals is due to the magnetic properties of nano-silica.
Study of Babak River water quality using physical and chemical parameters in Kebon Kongok landfill (Lombok, Indonesia) Meiliyadi, Lalu Ahmad Didik; Rahman, Muhammad Zainur; Zain, Zahida Aliatu
International Journal of Advances in Applied Sciences Vol 13, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i2.pp225-233

Abstract

The study has been conducted on the water quality level of the Babak River around Kebon Kongok landfill, Lombok. This research was conducted considering that water has many benefits in the daily lives of people. This research uses an experimental method by analyzing physical parameters (temperature, conductivity, pH, and total dissolved solids (TDS)), and chemical parameters in the form of heavy metal content lead (Pb), iron (Fe), manganese (Mn), and copper (Cu)). Analysis results were compared with quality standards based on Ministry of Health Regulation No. 32 of 2017 concerning water quality. Based on the study, it was found that the farther the distance of water measured from the source of pollution, the value of the physical and chemical parameters of water will be smaller. Most of the physical parameter test results show the Babak River water quality is still at the safe threshold limit but there is 1 point of river water that is polluted due to the distance that is too close to the active zone. Chemical parameters show the results of heavy metal content below the threshold limit. Analysis of the water quality shows that the water is still in good condition, which is below the threshold set by the Indonesian government.
Analysis of Student Conceptions based on Cognitive Style on Newton Law Understandings Mustofa, Hisbulloh Als; Zain, Zahida Aliatu; Tsania, Hartami; Azman, Mohamed Nor Azhari; Marmoah, Sri; Masfuah, Siti
Jurnal Pendidikan IPA Indonesia Vol. 13 No. 2 (2024): June 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/mx0v4952

Abstract

Differences in students’ cognitive style aspects allow for differences in students’ conceptions of their understanding of Newton’s laws. This study aims to determine the profile of students’ conceptions in-depth based on their cognitive styles. This research used a qualitative method with a descriptive phenomenological design involving cognitive style tests with GEFT (Group Embedded Figured Test) on 30 students to be categorized based on their cognitive styles. From the 30 participants, three strongly field-dependent and three strongly field-independent students were selected. Six selected students were diagnosed using a four-tier diagnostic instrument for their understanding and conceptions. Semi-structured interviews were also conducted to investigate the students’ conceptions in depth. This study concludes that field-independent (FI) students frequently display an inclination toward analytical thinking by self-exploring. However, they frequently experience difficulties in analyzing concepts without a solid foundation in physics, which can result in certain theoretical misconceptions. Conversely, field-dependent (FD) students can receive a broader range of information but demonstrate difficulties in analytical tasks, such as interpreting graphs and establishing causal relationships between physical quantities, which can result in correlational misconceptions. To rectify this misconception, it is imperative to implement a bespoke pedagogical strategy that integrates efficacious elucidations, tangible exemplifications, structured scaffolding, inquiry, and methodical practical exercises.
VALIDITY OF INSTRUMENT MEASURING SECONDARY SCHOOL STUDENTS LEARNING DIFFICULTIES IN PHYSIC EDUCATION imami, muh khairul wajedi; darus, mazlina mat; zain, zahida aliatu; Hasyim, Mutahharah
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 10 No. 1 (2026): Volume 10, Nomor 1, February 2026
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v10i1.38086

Abstract

In learning physic, students might experience learning difficulties that could hinder the knowledge transfer and the efficiency of the learning. It's caused by a limited number of instruments that are valid to measure students' learning difficulty in physical education. Therefore, the current research aims to validate physic learning difficulty scale for secondary school students in Indonesia. This research used a survey design. The current research participants were 388 students in Nusa Tenggara Barat, Indonesia. Two procedures were used to analyse the data: exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). The results show that EFA with comprehensive techniques that compromise parallel analysis yielded a 3-factor solution: environment factor, metacognitive factor and emotional factor. The three factors solution was confirmed through CFA with the value: Chi Square=1.922, goodness of fit index (GFI)=.936, adjusted goodness of fit index (AGFI)=.913, Tucker–Lewis index (TLI)=.895, comparative fit index (CFI)=.913, root mean square error of approximation (RMSEA)=.049, and Standardized Root Mean Residual (SRMR)=.079. Therefore, based on psychometric analysis, the scale is valid and reliable to be used in measuring students physic learning difficulty of Indonesian secondary school students. The current research’s novelty is that it provides a valid and reliable instrument to measure student`s difficulty in physic education. The use of the current instrument can ensure the accuracy, reliability, and credibility of research related to student difficulty in physic education.
Co-Authors Azman, Mohamed Nor Azhari darus, mazlina mat imami, Muh Khairul Wajedi Lalu Ahmad Didik Meiliyadi Mustofa, Hisbulloh Als Mutahharah Hasyim, Mutahharah Rahman, Muh. Zainur Rahman, Muhammad Zainur Siti Masfuah Sri Marmoah Tsania, Hartami