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All Journal Jurnal Biologi Tropis EMTEKA: Jurnal Pendidikan Matematika
Indra Purnomo
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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ANALISIS KEMAMPUAN PENALARAN MATEMATIS SISWA SMP PADA MATERI ARITMATIKA SOSIAL DITINJAU DARI LITERASI MATEMATIKA SISWA Halidin S.Pd., M.PMat; Chairuddin Chairuddin; Indra Purnomo
EMTEKA: Jurnal Pendidikan Matematika Vol 4 No 1 (2023)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/emteka.v4i1.3448

Abstract

This study aims to identify the analysis of junior high school students' mathematical reasoning abilities on social arithmetic material in terms of students' mathematical literacy. the research method used is descriptive qualitative research. Sampling using porposive sampling technique. The sample in this study consisted of 31 class VII students of SMP Negeri 1 Tirawuta. The research instrument used was a test in the form of a description of mathematical reasoning abilities consisting of 4 questions, and interviews. The results showed that in terms of students' mathematical literacy. Based on 31 students in class VII A, it was found that the frequency of the high-level literacy category was 4 students with a percentage of 13%, the frequency for the medium-level literacy category was 9 students with a percentage of 29%, and the frequency for the category low-level literacy, namely 18 students with a percentage of 58%, from 31 students in class VII A, it was found that the frequency of the high-level reasoning category was 4 students, the frequency for the medium-level reasoning category was 9 students, and the frequency for the low-level category was 18 students, and Mathematical reasoning abilities in terms of students' mathematical literacy, namely 4 students with high levels of mathematical literacy have high levels of mathematical reasoning abilities, 10 students with moderate levels of mathematical literacy have moderate levels of mathematical reasoning abilities, and 18 students with low levels of mathematical literacy have pen skills. low-level mathematical solutions.
Computational Toxicology: Endocrine Disrupting Effects of Lavender and Tea Tree Metabolites Selvira Anandia Intan Maulidya; Baiq Risky Wahyu Lisnasari; Indra Purnomo; Tuhfatul Ulya; Wayan Cintya Ganes Budastra
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i2.9143

Abstract

While Lavandula angustifolia (lavender) and Melaleuca alternifolia (tea tree) are widely utilized in diverse products for their rich bioactive secondary metabolites, emerging evidence now fules concerns about their potential endocrine-disrupting activities. This study aimed to investigate the endocrine-disrupting potential of selected secondary metabolites from lavender and tea tree via an in silico molecular docking approach. Molecular interactions were evaluated against 18 human endrocine receptors using Endocrine Disruptome in silico tools and binding affinities were analyzed to assess potential toxicity. Docking analysis revealed that all lavender anda tea tree secondary metabolites have the potential to interact as androgen receptor antagonists, exhibiting minor, medium, and high probabilities of such activity. Additionally, more than 20% of lavender secondary metabolites and 10% of tea tree secondary metabolites are predicted to be capable of binding to the mineralocorticoid receptor, as well as thyroid receptors alpha and beta. These findings suggest a plausible mechanism by which these phytochemicals could exert endocrine-disruptor effects. In conclusion, the study provides preliminary computational evidence supporting the hypothesis that certain lavender and tea tree sceondary metabolites may act as endocrine-disrupting agents. Further in vitro and in vivo studies are warranted to assess their toxicological implications for long-term human exposure.
Co-Authors Baiq Risky Wahyu Lisnasari Chairuddin Chairuddin Halidin S.Pd., M.PMat Selvira Anandia Intan Maulidya Tuhfatul Ulya Wayan Cintya Ganes Budastra