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THE IMPLEMENTATION OF 5E LEARNING CYCLE MODEL ON THE TOPIC ‘STRUCTURE AND FUNCTION OF PLANTS’ TO IMPROVE THE SCIENTIFIC LITERACY OF THE SECOND YEAR STUDE Suryawati, Evi; Natalina, Mariani; Nadia; Deswati
International Journal of Educational Best Practices Vol. 2 No. 2 (2018)
Publisher : Prodi Administrasi Pendidikan Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijebp.2.2.26-33

Abstract

This study aims to improve student’s science literacy skills by using 5E Learning Cycle model. The treatment was conducted collaboratively for the topic ‘Structures and functions of plants’ involving Biology lectures, pre-service teachers, and the science school teachers of SMPN 21 Pekanbaru in August 2018. The focus of the observation was on science literacy and learning activities of students, both individually and in groups. Science literacy including scientific, procedural and epistemic knowledge was measured through worksheets. While the aspects of explaining scientific phenomena, evaluating and design scientific investigations, interpreting data, and the evidence were measured using an assessment sheet performance. Curiosity, scientific argumentation and environmental awareness were measured using the observation sheet. Learning activities carried out inside and outside the classroom had a positive impact on literacy skill science. The data showed the students individually or in groups could answer questions in the worksheet, more actively engaged, more enthusiastic and more curious when observing, identifying and grouping plants using real objects around school environment. Some questions arose from students when identifying corn and carrot plants about vegetative and generative structures. Overall, the implementation of 5E Learning Cycle model can improve students' scientific literacy in learning science at SMPN 21 Pekanbaru.
Utilization of Coffee Peel Waste as Biosorbent for Rhodamine B Dye Removal: Isotherm, Kinetics, and Thermodynamic Studies Zein, Rahmiana; Prestica, Yona; Deswati; Ramadhani, Putri
Indonesian Journal of Environmental Management and Sustainability Vol. 9 No. 1 (2025): March
Publisher : Magister Program of Material Science, Graduate School of Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2025.9.1.36-45

Abstract

Coffee Peel Waste (CPW) is an abundant and inexpensive material that can be employed as a biosorbent to remove Rhodamine B (RB) dye from wastewater. This research utilized the batch adsorption approach to optimize the parameters of pH, starting concentration of dye and period of contact. At pH 8, 1000 mg/L as the starting concentration and 105 minutes as the contact time, the optimal conditions were established, exhibited an adsorption capacity of 71.8454 mg/g, aligning with the Langmuir isotherm model, wherein mechanism of adsorption demonstrated monolayer adsorption, and was most appropriate for the kinetic model of pseudo-second order. Thermodynamic analysis revealed that the adsorption occurred spontaneously and released heat, confirming its exothermic nature. FTIR characterization identified the functional sites involved in the adsorption mechanism. At the same time, SEM-EDX analysis showed morphological changes and an increase in some aspects after adsorption, confirming the attachment of RB to the surface of the CPW. This study reveals the advantages of CPW as an innovative, efficient and sustainable biosorbent, offering a new solution in wastewater treatment based on agro-industrial waste.
The Impact of Biofloc on Fish Growth Indicators and Health Risks Assesment from Polyethylene Terephthalate Microplastic Contamination Afriani, Dian Rizky; Deswati; Rahmiana Zein
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 26 No. 02 (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-iss02/594

Abstract

This study aims to evaluate the effects of biofloc technology on the growth performance of Nile tilapia (Oreochromis niloticus) and to assess potential health risks associated with polyethylene terephthalate (PET) microplastic contamination in aquaculture systems. Three treatments were applied: aquaculture without biofloc and microplastics, aquaculture with biofloc but without microplastics, and aquaculture with biofloc combined with PET microplastics. The novelty of this research lies in the integration of biofloc technology with a quantitative health risk assessment approach aspect that has received limited attention in previous studies. Furthermore, this study specifically utilizes PET microplastics, which differ in physicochemical properties and toxicological potential from the commonly studied polyethylene (PE) microplastics. The results revealed that the best performance was observed in the treatment with biofloc but without microplastics, showing an average body weight (ABW) of 5.478 g/fish, an average daily gain (ADG) of 2.343 g/fish/day, and a specific growth rate (SGR) of 4.208%. In terms of health risk, this treatment also demonstrated low to moderate risk levels, with a Polymer Load Index (PLI) of 2.53, a Potential Health Index (PHI) of 11, and a Potential Ecological Risk Index (PERI) of 10. These findings indicate that biofloc technology is not only effective in enhancing fish growth performance but also contributes to mitigating the adverse impacts of microplastic contamination on fish health and food safety in aquaculture systems.
TINGKAT KEPUASAN DOKTER, PETUGAS FARMASI, DAN PASIEN RAWAT JALAN TERHADAP SISTEM PELAYANAN RESEP ELEKTRONIK DI RUMAH SAKIT OTAK DR. Drs. M. HATTA BUKITTINGGI Juliasmi, Riri; Deswati; Afriani, Tika
Journal of Science and Clinical Pharmacy Research Vol. 1 No. 1 (2025): February 2025
Publisher : LPPM Universitas Mohammad Natsir Bukittinggi

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

Abstract

Penerapan resep elektronik merupakan salah satu strategi untuk mengurangi kesalahan pengobatan (medication error) guna meningkatkan kualitas pelayanan di rumah sakit. Namun, dalam implementasinya, masih terdapat tantangan terkait interaksi antara teknologi dan sumber daya manusia, serta pengelolaan dan evaluasi yang belum optimal. Peresepan elektronik memungkinkan dokter menulis resep secara digital dan mengirimkannya langsung ke apotek dalam jaringan sistem peresepan elektronik. Penelitian ini bersifat deskriptif analitik dengan metode probability sampling. Sampel penelitian terdiri atas 30 dokter, 35 petugas farmasi, dan 100 pasien rawat jalan yang diberikan kuesioner sebagai alat ukur. Hasil penelitian menunjukkan bahwa tingkat kepuasan terhadap sistem pelayanan resep elektronik di Rumah Sakit Otak Dr. Drs. M. Hatta Bukittinggi sangat tinggi, dengan persentase kepuasan sebesar 90% pada dokter, 88% pada petugas farmasi, dan 86,8% pada pasien rawat jalan. Analisis statistik menunjukkan bahwa tidak terdapat hubungan signifikan antara faktor demografi (jenis kelamin, usia, pendidikan, pekerjaan, dan penghasilan) dengan tingkat kepuasan responden (p > 0,05). Hasil penelitian ini diharapkan dapat menjadi bahan evaluasi untuk meningkatkan efektivitas sistem peresepan elektronik dalam pelayanan kesehatan. Kata kunci : Kepuasan, Resep Elektronik, Dokter, Petugas Farmasi, dan Pasien Rawat Jalan