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All Journal JURNAL ILMIAH PLATAX GeoEco Sosio-Didaktika: Social Science Education Journal
Fellix Rimba
Universitas Pendidikan Indonesia
Religion Humanities Education Environmental Science Social Sciences

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ANALYSIS OF NATURALIST INTELLIGENCE OF STUDENTS IN CLASS XI IPS OF SANTO LEO HIGH SCHOOL, WEST JAKARTA Fellix Rimba; Nandi Nandi; Annisa Joviani Astari
GeoEco Vol 9, No 2 (2023): GeoEco July 2023
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ge.v9i2.70839

Abstract

This study aims to determine the level of naturalist intelligence of students in class XI of Santo Leo High School, West Jakarta. This research uses descriptive-qualitative method. The population and sample in this study used Simple Random Sampling with students in class XI IPS SMA Santo Leo West Jakarta as many as 32 people. the instrument used in this study is a questionnaire related to naturalist intelligence. The results showed that the naturalist intelligence of students in class XI IPS SMA Santo Leo West Jakarta was classified as a high category with a score of 3.89. As explained in detail the achievement of each indicator is Distinguishing members of a species gets a score of 4.10 with a high category, Recognizing the existence of species with a penchant for being in the open nature of the medium category (3.54), Mapping the relationship between several species, either formally or informally with a score of 4.00 (High category) and Researching natural symptoms with a score of 3.90 which is classified as high.
Analisis Efektivitas Pembelajaran Geografi pada Pelaksanaan Tatap Muka Terbatas (TMT) di SMA se-Kecamatan Taman Sari Jakarta Barat Fellix Rimba
Sosio-Didaktika: Social Science Education Journal Vol 10, No 1 (2023)
Publisher : Faculty of Education and Teacher Training, UIN (State Islamic University) Syarif Hidayatul

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/sd.v10i1.26126

Abstract

This study aims to determine the implementation of geography learning during the pandemic and the effectiveness of geography learning in senior high schools throughout the Taman Sari sub-district, West Jakarta. This research is located in Senior high school in Taman Sari, West Jakarta, which consists of 5 schools namely, SMAN 17 West Jakarta, SMA Sentosa Pagi, SMAN 2 Jakarta, SMA Santo Leo and Ricci School. The data collection techniques used in this study were observation techniques, documentation studies and interview techniques. The analytical technique used in this research is descriptive qualitative analysis, which is to explain the analysis of the effectiveness of geography learning in the implementation of limited face-to-face learning in class X IPS SMA in Taman Sari, West Jakarta. Which will be presented in the form of percentages, tables, graphs, images and others. The results showed that (1) the implementation of learning in high schools throughout the Taman Sari District during the covid-19 pandemic was carried out face-to-face limited and online by using the whatsapp group application, google classroom and zoom meeting. (2) the effectiveness of learning geography in the face-to-face period is limited, judging from the quality of learning that is classified as quite effective with a score of 76.22%, the level of teaching is quite effective with a score of 78.37%, incentives are categorized as quite effective with a score of 68.90% and learning time is in the category of quite effective with a score of 90% Learning geography in face-to-face limited shows quite effective results, which is equal to 78.37%.Keywords:  Learning Effectiveness, Limited Face-to-face
Antioxidant Activity and Bioactive Compound in Mangrove Fruit (Rhizophora mucronata Lamk.) Riyan Adi Priyanto; Fellix Rimba
Jurnal Ilmiah PLATAX Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.48758

Abstract

Mangrove fruit (Rhizophora mucronata Lamk.) has a good bioactive and antioxidant compound.  Mangrove fruits are usually extracted with methanol solvent and thus it’s necessary to investigate the influence of different solvents on their antioxidant activity. The purpose of this research was to study the effect of solvent polarity on the antioxidant activity of mangrove fruit extract. The solvent used was n-hexane (nonpolar), ethyl acetate (semi-polar), and methanol (polar). Antioxidant activity was measured by the DPPH method. The polarity of the solvents significantly affected the IC50 values of mangrove fruit extract. IC50 values from n-hexane, ethyl acetate, and methanol extracts were 354,83 ppm, 120,19 ppm, and 58,61 ppm respectively. The crude extract (methanol) can inhibit fat oxidation and achieve the best peroxide number of 3.00 mEq/kg oil, which was lowered at a concentration of 31.25 ppm.  Methanol extract and Ethyl acetate contained bioactive compounds such as alkaloids, steroids, flavonoids, phenols hydroquinone, and, tannins. N-hexane extract had steroids. The best solvent to produce the highest antioxidant activity and inhibit peroxide was methanol. Keywords: Bioactive compound, mangrove fruit, polarity Abstrak Buah Bakau (Rhizophora mucronata Lamk.) memiliki komponen bioaktif dan aktivitas antioksidan yang baik. Umumnya buah bakau diekstrak dengan menggunakan metanol, sehingga perlu dilakukan penelitian untuk mengetahui pengaruh perbedaan pelarut terhadap aktivitas antioksidan buah bakau. Tujuan dari penelitian ini adalah untuk menentukan aktivitas antioksidan dari buah bakau dengan metode DPPH yang diekstraksi dengan tiga macam pelarut berbeda yaitu, n-heksana (nonpolar), etil asetat (semi polar) dan metanol (polar). Nilai IC50 ekstrak kasar buah bakau dipengaruhi secara signifikan oleh tingkat kepolaran pelarut.  Nilai IC50 dari ekstrak kasar n-heksana sebesar 354,83 ppm, ekstrak kasar etil asetat sebesar 120,19 ppm dan ekstrak kasar metanol sebesar 58,61 ppm. Ekstrak kasar (metanol) dapat menghambat oksidasi lemak dan menghasilkan nilai bilangan peroksida terbaik sebesar 3,00 Meq/Kg minyak yang dapat diturunkan pada konsentrasi 31,25 ppm. Ekstrak kasar metanol dan etil asetat mengandung komponen bioaktif alkaloid, steroid, flavonoid, fenol hidrokuinon dan tannin. Ekstrak kasar n-heksana mengandung komponen bioaktif yaitu steroid. Pelarut terbaik yang dapat menghasilkan aktivitas antioksidan tertinggi serta dapat menghambat bilangan peroksida terbaik adalah metanol. Kata kunci: komponen bioaktif, Buah bakau, kepolaran.
Co-Authors Annisa Joviani Astari Nandi Nandi Riyan Adi Priyanto