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All Journal Biotropika Jurnal Zeolit Indonesia Biosfer: Jurnal Pendidikan Biologi Jurnal Ranah Komunikasi (JRK) Jurnal Ilmiah Wahana Pendidikan Biopedagogia Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat Ilmu Komunikasi Jurnal Media Komunikasi Intelektual
Ratna Komala
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Nursing Public Health Social Sciences Other

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Struktur Komunitas Moluska dan Kualitas Perairan di Kawasan Hutan dengan Tujuan Khusus Carita, Pandeglang, Banten Berti Priska Gea; Budi Rahayu; Silfi Faizatuluhmi; Ratna Komala
Biotropika: Journal of Tropical Biology Vol 7, No 1 (2019)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.biotropika.2019.007.01.03

Abstract

Moluska adalah salah satu bioindikator pencemaran lingkungan yang sebagian besar spesiesnya di Indonesia belum banyak diungkap sehingga menarik untuk dipelajari lebih dalam. Moluska dapat ditemukan di perairan laut dan tawar di Pantai Carita, Pandeglang. Tujuan dari penelitian ini adalah untuk mempelajari struktur komunitas Moluska di perairan laut dan tawar serta penentuan kualitas perairan. Penelitian dilaksanakan di Kawasan Hutan dengan Tujuan Khusus (KHDTK), Kecamatan Carita, Kabupaten Pandeglang, Banten. Metode penelitian yang digunakan adalah kuantitatif deskriptif. Sampel Moluska dikumpulkan dari tiga kuadran dengan masing-masing ukuran 1  1 m2 berdasarkan garis transek. Identifikasi dan analisis data dilakukan berdasarkan kelimpahan, indeks keanekaragaman dan dominansi. Sampel yang teridentifikasi didominasi oleh Gastropoda dibandingkan Bivalvia. Indeks keanekaragaman Moluska di perairan laut adalah 0,37, 0,36, dan 0,32, sementara di perairan tawar adalah 0.36, 0.36, dan 0.37. Indeks dominansi Moluska di perairan tawar adalah 0.12, 0.21, dan 0.04 sedangkan di perairan tawar adalah 0.08, 0.10, dan 0.17. Spesies melimpah di perairan laut adalah Laevipilina cachuchensis, Rhinoclavis vergatus, Mactra grandis, Trachycardium subrugosum, dan Morula margariticola sedangkan spesies dominan di perairan tawar adalah Thiara Scabra. Kualitas dari perairan tawar maupun laut termasuk kategori baik untuk mendukung kehidupan Moluska.
INCREASING THE Si/Al RATIO OF NATURAL ZEOLITE MORDENITE AS BASIC MATERIAL OF CATALYST Roocyta Handhoyo; Herry Prijatama; Siti Sofiyah; Iis Nurlela; Nita Yusianita; R. Amelia; Ratna Komala
Jurnal Zeolit Indonesia Vol. 4 No. 1 (2005)
Publisher : Jurnal Zeolit Indonesia

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Abstract

One of the application of zeolite as a multi-function mineral is the use as catalyst. Investigation to utilize Indonesian natural zeolite as a catalyst will increase the added value and gives a chance to reduce the dependency of imported catalyst. One of the main property, which allow zeolite to be used as a catalyst, is a high silica-alumina ratio, where Si/Al >10. As a preminalry stage to form a catalyst zeolite, research has been carried out to increase the Si/Al ratio of natural mordenite from Cikalong, Tasikmalaya. The method applied is dealumination process, which is followed by calcinations and ion exchange. This process is expected to modify the Na-zeolite from natural mordenit to be a NH4-zeolite which can be transformed to a catalyst zeolite. Dealumination process is carried out using HNO3, with variable concentration and time at temperature of 85°C. Thereafter, zeolite is calcined at 700°C and is followed ion exchange process using NH4NO3. The current stage of research has been succeeded to increase the Si/Al ratio of natural mordenite from Si/Al @ 5 to Si/Al > 10. The process condition applied is dealumination with 8N HNO3 for 24 hours at 85°°C and is followed by calcinations at 700°C for 2 hours. Ion exchange is proceeded with 5% NH4NO3 for 2 hours and is followed by another calcinations at 400°C for 2 hours.
HUBUNGAN EFIKASI DIRI DAN PENALARAN ILMIAH DENGAN HASIL BELAJAR BIOLOGI SISWA SMA Oktavia Nurmawaty Sigiro; Diana Vivanti Sigit; 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 (186.334 KB) | DOI: 10.21009/biosferjpb.10-2.4

Abstract

Efikasi diri dan penalaran ilmiah merupakan faktor internal dalam diri siswa yang memiliki peran penting untuk hasil belajar siswa. Siswa dengan efikasi diri dan penalaran ilmiah yang tinggi akan mencapai hasil belajar yang tinggi dan begitu juga sebaliknya. Penelitian ini bertujuan untuk mengetahui hubungan antara efikasi diri dengan hasil belajar, hubungan penalaran ilmiah dengan hasil belajar, serta hubungan efikasi diri dan penalaran ilmiah secara bersama-sama dengan hasil belajar. Metode penelitian yang digunakan dalam penelitian ini adalah metode deskriptif korelasional. Sampel penelitian berjumlah 85 siswa dengan pengambilan sampel menggunakan teknik simple random sampling pada siswa kelas XI MIPA SMA Negeri 22 Jakarta. Hasil penelitian yang diperoleh dengan taraf signifikansi 0,05 menunjukkan bahwa: 1) terdapat hubungan antara efikasi diri dengan hasil belajar siswa (r = 0,742), 2) terdapat hubungan penalaran ilmiah dengan hasil (r = 0,648), dan terdapat hubungan antara efikasi diri dan penalaran ilmiah secara bersama-sama dengan hasil belajar siswa (r = 0,749).
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.
PENGEMBANGAN PALUDARIUM SEBAGAI MEDIA PEMBELAJARAN BIOLOGI POKOK BAHASAN EKOSISTEM DI SMA Ratna Komala; Ade Suryanda; Diana Dia Lismana
Biosfer: Jurnal Pendidikan Biologi Vol 9 No 1 (2016): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.944 KB) | DOI: 10.21009/biosferjpb.9-1.2

Abstract

Paludarium is one the art of landscape design in a container with visualizing terrestrial ecosystem, aquatic ecosystem, and air ecosystem, so looks like a real in nature. Paludarium can be potential as a media of learning ecosytem. The aims of this research was to develop paludarium as Biology learning media on the subject of ecosystem and know the feasibility of paludarium as learning media. The research was held at Senior High School 38 Jakarta with using research and development method. Analysis of potential and problems, paludarium design, validation design, paludarium revision, paludarium try out were the steps in the research. Paludarium received the average score was 84,2% that achieved good interpretation. The average value to limited field try out (36 students) of the test after using paludarium was 82.77. The average value to wide scale field try out (72 students) of the test after using paludarium was 83.54. The mastery of classical learning to limited field try out after using paludarium was 97.2% and to wide scale field try out after using paludarium was 81.9%. The result of this research showed that the paludarium could be utilized as one of Biology learning media on the subject of ecosytem at senior high school.
PENGARUH PENERAPAN MODEL RECIPROCAL TEACHING TERINTEGRASI MIND MAPPING TERHADAP PEMAHAMAN KONSEP SISWA PADA MATERI FILUM ARTHROPODA Nurmasari Sartono; Ratna Komala; Helda Dumayanti
Biosfer: Jurnal Pendidikan Biologi Vol 9 No 1 (2016): Biosfer: Jurnal Pendidikan Biologi
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.224 KB) | DOI: 10.21009/biosferjpb.9-1.4

Abstract

The Arthropoda Phyllum is part of the Biology subject that requires an understanding of concepts. One of models for these subject is a reciprocal teaching integrated mind mapping model. This model make the students better to understand and easier to remember it for the relationship between various concepts, and their visualization and image colours. The purpose of this research was to know the effect of reciprocal teaching integrated mind mapping model application towards to student’s understanding concept on Arthropoda Phyllum. The research was conducted in SMA 105 Jakarta from February until March 2016. The research method was used a quasi-experimental with research design posttest-only control group design. Sample handling technical was used simple random sampling method. The instrument of these method was comperehension concept posttest in the form of multiple choice objective test accompanied by CRI index (Certainty of Response Index) or the scale of confidence of respondents in answering questions. Based on data analysis result, showed that data as normally distributed and homogeny. The conclusions of this research show there is effect of application reciprocal teaching integrated mind mapping model toward student’s comperehension concept on Phyllum Arthropoda.
Analisis Pengaruh Mudharabah Financing, Musyarakah Financing, dan Ijarah Leases Terhadap Profitability Bank Syariah (PT. Bank Bca Syariah) Periode 2017-2021 Ratna Komala; Isro’iyatul Mubarokah
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 21 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.767 KB) | DOI: 10.5281/zenodo.7302339

Abstract

Research activities were conducted with the aim of knowing and testing the impact of Mudharabah Financing, Musyarakah Financing and Ijarah Lease on PT Bank BCA Syariah's profitability. The sampling method is a non-probability sample, the population covers all financial reports of Bank BCA Syariah, but the sample represents Bank BCA Syariah's quarterly financial statements from 2017 to 2021. The data used in this study are quantitative secondary data for the period 2017-2021. Tests were performed using the SPSS statistical program. Regarding Musyarakah Financing and Ijarah Lease, it is concluded that Musyarakah Financing and Ijarah Lease will not have a material impact on BCA Syariah's profitability. In contrast to the Mudharabah loan, the results showed that the Mudharabah loan had a significant impact on BCA Syariah Bank's profitability
PEMANFAATAN TEORI IMAGE RESTORATION DALAM PENELITIAN KUALITATIF DAN KUANTITATIF DI ERA TEKNOLOGI DIGITAL Ratna Komala
Jurnal Ranah Komunikasi Vol 6 No 2 (2022): Jurnal Ranah Komunikasi (JRK)
Publisher : Jurusan Ilmu Komunikasi Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/rk.6.2.99-111.2022

Abstract

This paper aims to map the use of the Image Restoration Discourse theory or approach to analyze crises both in organizations and individuals. Digital technology has a significant influence on the study of crisis communication, where internet-based communication platforms, such as social media, allow information to be widely disseminated, in real time interaction. On the one hand, digital technology is a solution to the crisis, but on the other hand it is a source of crisis. Using the literature review method, various previous research related to the theory, also known as Image Repair Theory, were collected, both classical and contemporary. In conclusion, Image Repair theory is relevant to be used as an analytical tool for various research units, including its relation to the use of digital technology.
The Correlation between Enviromental Knowledge and Enviromental Care Attitude on Biological Education Students in State University of Jakarta Eka Putri Azrai; Maya Gayatri Widyasa; Ratna Komala
Biopedagogia Vol 5, No 2 (2023): November
Publisher : Program Studi Pendidikan Biologi Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/biopedagogia.v5i2.2928

Abstract

The environment plays an important role in human life. Knowledge of the environment can affect the attitude of caring for the environment. This study aims to determine the correlation between enviromental knowledge and enviromental care attitude students of Biology Education Study Program, UNJ. This research was conducted at State University of Jakarta on February 2022. The total samples used were 70 students, taken by Simple Random Sampling. The methode used is a quantitative method with a correlational study. Statistical hypothetis test through Linearity test and Pearson Correlation test. It is known that thera is a positive relationship between enviromental knowledge and enviromental care attitude with correlation coeficient in high category. The relationship that formed is a positive relationship, so the higher the student's environmental knowledge, the better the enviromental care attitude. Further research needs to be done in order to find other variables that are suspected to have a relationship to student’s knowledge of the environment with an enviromental care attitude so that student’s knowledge and student’s enviromental care attitude can be increased. The application of the good environmental care attitude of UNJ Biology Education students also needs to be appreciated by the University. With awards related to students' caring attitude towards the environment, it can bring up environmental care attitudes for other students.
BUDIDAYA IKAN DALAM EMBER (BUDIKDAMBER) UNTUK MENUNJANG KETAHANAN PANGAN MASYARAKAT DI DESA CISAAT KABUPATEN SUBANG JAWA BARAT Ratna Komala; Diana Vivanti Sigit, M.Si; M. Isnin Noer; Yordan Fatahilah; Delviolla Maharani
Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Vol. 5 No. 1 (2024): PROSIDING SEMINAR NASIONAL PENGABDIAN KEPADA MASYARAKAT - SNPPM2024
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Negeri Jakarta

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Abstract

Abstract Fish farming in the buckets or better known as Budikdamber is an innovative solution for urban and rural communities. Budikdamber not only provides a quality source of animal protein, but also becomes a fun and educational activity. The objectives of this activity include increasing knowledge about effective and efficient freshwater aquaculture, fostering community interest in entrepreneurship to meet family food needs through cultivation and improving skills in the business of cultivating catfish in the buckets (budikdamber). Community service activities was carried out on Tuesday, June 25, 2024 starting from 08.00 to 12.00. attended by 26 participants from representatives of the Youth Organization of the village. The form of activity is training using lectures using power points and video screenings, discussions and continued with demonstrations on how to cultivate catfish in buckets followed by direct practice based on groups. Before being given a material presentation, a pre-test was carried out to find out the initial knowledge of the participants and after completing the practice, the activity ended with a post test. The conclusion of this community service activity generally went well and smoothly, increasing participants' knowledge between 80% to 100% and fostering participants' interest in conducting environmentally friendly fish farming businesses Keywords: cultivation, budikdamber, food security, catfish Abstrak Budidaya ikan dalam ember atau yang lebih dikenal dengan Budikdamber menjadi solusi inovatif bagi masyarakat perkotaan maupun pedesaan. Budikdamber tidak hanya memberikan sumber protein hewani yang berkualitas, tetapi juga menjadi kegiatan yang menyenangkan dan edukatif. Adapun tujuan dari kegiatan ini antara lain untuk Meningkatkan Pengetahuan tentang budidaya perairan tawar yang efektif dan efisien, Menumbuhkan minat masyarakat untuk berwirausaha untuk memenuhi kebutuhan pangan keluarga melalui budidaya dan meningkatkan keterampilan dalam usaha budidaya ikan lele dalam ember (budikdamber). Kegiatan pengabdian masyarakat dilaksanakan pada hari Selasa, tanggal 25 Juni 2024 dimulai pukul 08.00 sampai pukul 12.00. dihadiri 26 peserta dari perwakilan Karang Taruna dari desa. Bentuk kegiatan adalah pelatihan dengan menggunakan ceramah menggunakan power point dan pemutaran video, diskusi dan dilanjutkan dengan demontrasi pembuatan cara budidaya ikan lele dalam ember selanjutnya dilakukan praktek langsung berdasarkan kelompok. sebelum diberikan pemaparan materi dilakukan pre test untuk mengetahui pengetahuan awal peserta dan setelah selesai praktek kegiatan diakhiri dengan post test. Kesimpulan dari kegiatan pengabdian kepada masyarakat ini secara umum berjalan dengan baik dan lancar, meningkatkan pengetahuan peserta antara 80% sampai 100% serta menumbuhkan minat peserta untuk melakukan usaha budidaya ikan ramah lingkungan Kata kunci: budidaya, budikdamber, ketahanan pangan , lele
Co-Authors Ade Suryanda Annisa Ratu Azrai, Eka Putri Berti Priska Gea Budi Rahayu Delviolla Maharani Diana Dia Lismana Diana Vivanti Sigit Diana Vivanti Sigit, M.Si Dwi Septiana Helda Dumayanti Herry Prijatama Iis Nurlela Isro’iyatul Mubarokah M. Isnin Noer Maya Gayatri Widyasa Mieke Miarsyah Nita Yusianita Nurmasari Sartono R. Amelia Roocyta Handhoyo Sigiro, Oktavia Nurmawaty Silfi Faizatuluhmi Solly Aryza Utami, Aulia Widayat Yordan Fatahilah