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All Journal Biosfer: Jurnal Pendidikan Biologi Journal of Bioprocess Chemical and Environmental Engineering Science
Dwi Septiana
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Education Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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THE EFFECT OF RECIPROCAL TEACHING LEARNING MODEL INTEGRATED MIND MAP AND PERSISTENCE ON STUDENT RETENTION OF KINGDOM ANIMALIA CONCEPT Dwi Septiana; Mieke Miarsyah; Ratna Komala
Biosfer: Jurnal Pendidikan Biologi Vol 10 No 2 (2017): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.269 KB) | DOI: 10.21009/biosferjpb.10-2.5

Abstract

The low score of students learning outcome on Kingdom Animalia concept indicate that there must an improvement of students retention. The aim of this study is to know the effect of reciprocal teaching learning model that integrated with mind map and persistence on students retention. The method that used in this research is quasi experiment with 2 x 2 factorial design. The instruments that used in this research are learning outcome test and persistence questionnaire. The subject of this study is students of X IPA 1 and 2 from SMAN 49 Jakarta totalling 72 students. Samples were taken using simple random sampling. Analysis of data used two way anova. The result showed that : 1) There is effect of reciprocal teaching learning model integrated mind map on students retention with p< 0,05, p = 0,03. 2). There is effect of persistence on students retention with p< 0,05, p = 0,00. 3) There is interaction between reciprocal teaching learning model integrated mind map and persistence on students retention with p< 0,05, p = 0,031.
Screening Polimer Untuk Eor (Enhanced Oil Recovery) Di Lapangan “X” Minyak Cekungan Sumatera Tengah Dwi Septiana; Zuchra Helwani; Muslim Abdurrahman
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 3 No 1 (2022): Journal of Bioprocess, Chemical and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

Oil is the energy source that people demand and use the most right now. Recent years have seen a lot of interest in polymer flooding as a cutting-edge chemical-based enhanced oil recovery (EOR) solution. Field X Minyak Cekungan Sumatera is acceptable for chemical EOR (Polymer) testing with a success range of up to 70%. The polymer solution will follow the channel that the water has created, and because of its high viscosity, it tends to "block" this area of the reservoir, allowing previously immobilized oil to start flowing. This can improve sweep efficiency. In this study, four polymers will undertake screening tests on the basis of compatibility, concentration, viscosity vs. shear rate, filtration, screen factor, and thermal stability. The best results is polymer 2 after polymer screening included passing the compatibility test, producing the best viscosity compared to the other three polymers at the same concentration, FR 1.2, having the best screen factor value compared to the other three polymers, and passing the thermal stability test.
Co-Authors Mieke Miarsyah Muslim Abdurrahman Ratna Komala Zuchra Helwani