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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Quagga: Jurnal Pendidikan dan Biologi Holistic: Journal of Tropical Agriculture Sciences Bioculture Journal
Didik Priyandoko
Graduate School of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Social Sciences

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Implementasi Problem Based Learning untuk Meningkatkan Habits Of Mind, Emotional Intelligence, dan Penguasaan Konsep Siswa Febblina Daryanes; Siti Sriyati; Didik Priyandoko
Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) 2016: Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (560.468 KB)

Abstract

Kemampuan Habits of Mind, Emotional Intelligence, dan penguasaan konsep dapat dilatih, dikembangkan, dan ditingkatkan melalui suatu model pembelajaran. Penelitian ini bertujuan untuk mengetahui peningkatan Habits of Mind, Emotional Intelligence, dan penguasaan konsep siswa SMA melalui implementasi Problem Based Learning. Metode yang digunakan dalam penelitian ini adalah weak experiment dengan desain penelitian one-group pretestposttest yang dilakukan di kelas XI IPA 1 SMAN 1 Rengat Riau. Pengumpulan data dilakukan melalui angket Habits of Mind awal dan akhir, angket Emotional Intelligence awal dan akhir, soal pretest dan posttest materi sistem ekskresi dan sistem saraf. Analisis data penelitian menggunakan nilai normalisasi gain. Hasil penelitian menunjukkan bahwa kemampuan Habits of Mind siswa setelah implementasi Problem Based Learning mengalami peningkatan dengan N-gain sebesar 0,53 berada dalam kategori sedang. Sejalan dengan itu, kemampuan Emotional Intelligence siswa juga mengalami peningkatan dengan N-gain sebesar 0,33 berada dalam kategori sedang. Kemampuan penguasaan konsep siswa pada materi sistem ekskresi mengalami peningkatan dengan N-gain sebesar 0,66 berada dalam kategori sedang, sedangkan pada materi sistem saraf mengalami peningkatan dengan N-gain sebesar 0,84 berada dalam kategori tinggi. Dapat disimpulkan bahwa implementasi Problem Based Learning dapat meningkatkan kemampuan Habits of Mind, Emotional Intelligence, dan penguasaan konsep siswa. Peningkatan kemampuan Habits of Mind, Emotional Intelligence, dan penguasaan konsep siswa di atas nilai standar 0,31 (N-gain sedang).
Assessment of bio-activities of the crude extract and components of Withania somnifera leaves by bioinformatics Nashi Widodo; Didik Priyandoko; Custer C. Deocaris; Renu Wadhwa; Sunil C. Kaul
Journal of Tropical Life Science Vol. 1 No. 1 (2010)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.1.1.%x

Abstract

Traditional herbal medicines are now increasingly being appreciated with Western models of integrative health sciences and evidence-based approach both in the basic research and clinic scenario. Ashwagandha is a commonly used plant in Ayurvedic, Indian traditional medicine. Medicinal value of Ashwagandha (WithaniasomniferaDunal) extends from anti-inflammatory, anti-arthritic, anti-rheumatic, rejuvenation and anti-cancer. Based on the belief that holistic multi-site mechanism of action offers greater chance of success, the traditional Ayurvedicmedicine practices the use of whole herb or its crude extract. It opposes with the mainstream of pharmaceutical industry that uses single and purified molecules. In the present study, we used bioinformatics approach to reveal the mechanism of action of (i) crude extract of Ashwagandha leaf extract and its purified components, (ii) Withanone and (iii) Withaferin A. Whereas p53-p21 was identified as a common signaling pathway for the three kinds of reagents, specific signaling pathways for Withaferin-A and Withanone were identified. Whereas the crude extract and Withanone were selectively toxic to human cancer cells, Withaferin A showed cytotoxicity to the normal cells too. The study suggested that the crude extract or a combinational formulamay be a superior and safenatural reagent for cancer treatment.
Misconception Analysis of Cell Material Using Four-Tier Multiple Choice Diagnostic Test Naufal Ahmad Muzakki; Sariwulan Diana; Didik Priyandoko
Quagga: Jurnal Pendidikan dan Biologi Vol 15 No 2 (2023): QUAGGA : Jurnal Pendidikan dan Biologi
Publisher : Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25134/quagga.v15i2.32

Abstract

The purpose of students learning biology is to understand the concepts in biology, be able to connect one concept to another, and apply the learned concepts in daily life. Inability to properly connect concepts may cause misconceptions that will affect students' achievement. Therefore, the purpose of this study is to analyze students' misconceptions on the topic of cells using a four-tier multiple choice diagnostic test. The research method used is research and development. The subjects in this study were 36 students of class XI science at SMA Muhammadiyah 5 Rancaekek. The results of developing a diagnostic test using the content validity ratio (CVR) method produced a CVR value of 0.75 (CVR ≥ 0.672) and the content validity index (CVI) method produced a value of 0.87 so that the developed diagnostic test was feasible to use. The results of the analysis of misconceptions experienced by students showed that on the topic of chemical components making up cells 10.42%, cell structure 10.42%, cell function 13.89%, differences between animal and plant cells 17.36%, and bio-processes in cells 11.81%. Overall, the misconceptions experienced by students regarding cell material were 12.78% (misconceptions > 10%), which means that a misconception experienced by students was considered significant.
Kandungan senyawa capsaicin dalam cabai (Capsicum Annuum L) sebagai anti hama pada sayuran: Kajian pustaka Risma Khoerunisa; Risya Jheniar Nur Siti Khamilah; Dzuhrika Gantari Ayuanindya; Hertien Koosbandiah Surtikanti; Didik Priyandoko
Holistic: Journal of Tropical Agriculture Sciences Vol. 1 No. 2: (January) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/hjtas.v1i2.2024.354

Abstract

Vegetables are one of the most widely cultivated crops because of their important role in fulfilling food nutrition. In the implementation of vegetable cultivation, there will be obstacles such as pest and disease attacks. Chili plants can be used as vegetable pesticides because they have capsaicin compounds that can have a negative effect on pests. This literature review aims to discuss capsaicin compounds as anti-pests in vegetables, namely by causing the death of vegetable pests in several studies. The method used was a literature study. The results in the four articles reviewed show that the capsaicin compound in chili peppers can be used as a vegetable pesticide because it can affect digestion, inhibit growth and nerve work in pests which ultimately causes the death of these pests. The higher the concentration of chili extract, the higher the percentage of pest mortality. This vegetable pesticide from red chili extract can be used as an alternative to chemical pesticides.
Bakteri dalam proses produksi gas metana dari tumpukan sampah organik: Kajian pustaka Sulastri Putri Imani; Agisni Setiawati; Lutfia Oktaviani; Hertien Koosbandiah Surtikanti; Didik Priyandoko
Bioculture Journal Vol. 1 No. 2: (January) 2024
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/bioculture.v1i2.2024.370

Abstract

Methane gas is a gas that occurs naturally on earth and is formed in piles of rubbish due to the large number of bacteria that nest in it. This article aims to discuss the formation of methane gas originating from piles of organic waste. The type of research method in this article uses a comparative method of journals and articles from within the country and abroad. Based on the results of the study, it was found that there is methane gas formed from piles of organic waste that undergoes an anaerobic decomposition process and there are several bacteria that play a role in the process of forming methane gas, such asEnterobacter, Pseudomonas, Bacillus, Streptomyces and Streptococcus which is the most dominant bacteria in organic waste.
Co-Authors Agisni Setiawati Custer C. Deocaris Dzuhrika Gantari Ayuanindya Febblina Daryanes Lutfia Oktaviani Nashi Widodo Naufal Ahmad Muzakki Renu Wadhwa Risma Khoerunisa Risya Jheniar Nur Siti Khamilah Sariwulan Diana Siti Sriyati Sulastri Putri Imani Sunil C. Kaul Surtikanti Hertien Koosbandiah, Surtikanti