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All Journal Jurnal Kajian Pendidikan IPA Jurnal Kesehatan Rajawali
Adelin, Azalia
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Education Health Professions Immunology & microbiology Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary

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Analisis Kadar Timbal (Pb) di Dalam Ginjal Mencit (Mus musculus) yang Dipapar Secara Oral Baehaki, Farhan; Riyanto, Agus; Luthfiah, Nur Afifah; Adelin, Azalia; Prahasta, Vivo; Rismayanti, Siti Nur
Jurnal Kesehatan Rajawali Vol 15 No 1 (2025): Jurnal Kesehatan Rajawali
Publisher : Sekolah Tinggi Ilmu Kesehatan Rajawali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54350/jkr.v15i1.563

Abstract

Lead is a type of heavy metal that is harmful to health, including the kidneys. Lead can enter the body through several ways, including food and drink. This study was conducted to determine the effect of oral lead exposure on lead levels in the kidneys. The study was conducted with a post-test only control group design. The samples used were 8 male mice divided into 4 groups and given oral exposure to lead acetate at doses of 0.5 ppm, 1 ppm, and 2 ppm for 21 days. Measurement of lead levels was carried out using an Atomic Absorption Spectrophotometer (AAS) at a wavelength of 283.3 nm. It can be seen from the overall lead exposure at concentrations of 0.5 ppm, 1 ppm, and 2 ppm, that lead deposited in the kidneys increased by 68.67%. At a dose of 0.5 ppm, lead levels in the kidneys were 0.313 ppm (an increase of 9.38%). At a dose of 1 ppm, the lead level in the kidneys was 0.399 ppm (an increase of 39.38%). At a dose of 2 ppm, the lead level in the kidneys was 0.483 ppm (an increase of 68.67%). The average level of Pb absorbed in the kidneys increased along with the increase in lead entering the body.
Pengembangan Bahan Ajar Berbasis RADEC untuk Meningkatkan Keterampilan Proses Sains Baehaki, Farhan; Murtafi'ah, Ni'matul; Adelin, Azalia; Prahasta, Vivo
Jurnal Kajian Pendidikan IPA Vol 6 No 1 (2026): Jurnal Kajian Pendidikan IPA
Publisher : Universitas Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52434/jkpi.v6i1.43040

Abstract

The government has created a standard graduate profile that includes 21st-century competencies for prospective Medical Laboratory Technology (TLM) students. One of the skills the government focuses on is the development of Science Process Skills (SPS). Student-centered learning through various learning models has been implemented to improve SPS. However, the process has not been significantly successful. Students tend to be passive due to their lack of prior knowledge, so they focus on recording and writing rather than being actively involved. Therefore, the RADEC Learning Model (Read, Answer, Discuss, Explain, and Create) can be an alternative in supporting students' prior knowledge because it consists of Pre-Lecture (Read and Answer) and Lecture (Discuss, Explain, and Create) activities. Another obstacle is the breadth of material due to easy internet access, making it difficult for students to find and select valid information. The goal of this project is to create RADEC-based instructional resources that can help TLM students improve their science process abilities. The Development & Validation approach, which consists of three stages, is used in this study: 1) literature review; 2) construction; and 3) improvement. The 4-STMD approach was used in the creation of instructional materials. Thirty students studying Medical Laboratory Technology and seven specialists participated in the evaluation. A readability test sheet and an expert validation sheet were the tools utilised in the data collection procedure. The results showed that the teaching materials had excellent validity (conformity >80%) and good readability (>70%) in facilitating the development of science process skills. Therefore, the developed teaching materials can be implemented in lectures.Keywords: medical laboratory technology, RADEC, science process skills, teaching materials
Co-Authors Agus Riyanto Farhan Baehaki Luthfiah, Nur Afifah Murtafi'ah, Ni'matul Prahasta, Vivo Rismayanti, Siti Nur