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All Journal Biospecies Bioeducation Journal Pendidikan Biologi Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis JURNAL PENDIDIKAN TAMBUSAI Eksakta : Berkala Ilmiah Bidang MIPA Atrium Pendidikan Biologi Serambi Biologi Pelita Eksakta Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Sainstek : Jurnal Sains dan Teknologi Jurnal Biogenerasi Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SIMBIOSA MASALIQ: Jurnal Pendidikan dan Sains Jurnal Serambi Biologi
Dezi Handayani
Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Veterinary Other

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Comparative Study of Biology Student Learning Achievement with Cooperative Model by Numbered Head Together (NHT) and Talking Stick in Class XI SMA Pembangunan Laboratorium UNP Dhea Delara Iryanda; Dezi Handayani; Helendra Helendra
Bioeducation Journal Vol 1 No 1 (2017): Bioeducation Journal
Publisher : Universitas Negeri Padang Address: Biology Education Study Program Faculty Mathematics and Natural Science (FMIPA) Jl. Prof. Dr. Hamka Air Tawar Barat, Padang-West Sumatera-Indonesia Telp. +62751-7057420 - Fax.+62751-7058772 - Ph. +6281363229286

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bioedu.v1i1.26

Abstract

This research purpose to comparestudents’biology learning achievement that used cooperative learning model Numbered Head Together with the other class that usedTalking Stickinclass XI at SMA PembangunanLaboratoriumUniversitasNegeri Padang. This research was based on the problem in this school that still dominated by teacher centered learning and low interest and activityof students in learning, those make the students bored in the classroom. This research was quasi-experimental research which used the static group comparison designthat modified, because in this research didnot used any control class. Sample of this research was choosen by saturation sampling. Result showed thatstudents’ biology learning achievementusing Numbered Head Togetherhas significant difference with using Talking Stick learning model.
Development of Students Worksheet Nuanced of Emotional Spiritual Quotient about Cell, Organ, Tissue and Organism for Seventh Grade Students of SMP/MTs Ghean Azrin Mirza; Ristiono Ristiono; Dezi Handayani
Bioeducation Journal Vol 3 No 1 (2019): Bioeducation Journal
Publisher : Universitas Negeri Padang Address: Biology Education Study Program Faculty Mathematics and Natural Science (FMIPA) Jl. Prof. Dr. Hamka Air Tawar Barat, Padang-West Sumatera-Indonesia Telp. +62751-7057420 - Fax.+62751-7058772 - Ph. +6281363229286

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bioedu.v3i1.108

Abstract

Education is a conscious effort to improve the quality of learners both from aspects of science, attitude, and skills. During this school education focuses on the development of intellectual intelligence (IQ), which absorbs as much science but not yet touched on emotional intelligence (EQ) and spiritual (SQ). These three potentials should have been integrated in biology learning. Based on the results of research that has been done, the product results are LKPD nuanced ESQ on the cell material for students of grade VII SMP / MTs. Result of validity test with value of 81,37% by validator fulfill valid criterion, Result of validity in terms of feasibility of content, language, presentation and graphics. Practical test result with 92,53% value by teacher with very practical criteria from ease of use, time efficiency and forgiveness, while the result of practical test by student with 82,65% practical criterion from convenience, and benefit.
The Effect of Learning Model Advance Organizer Toward Students’ Science Learning Achievement Class VII SMPN 22 Padang AMERIA YUNITA; Dezi Handayani; Syamsurizal Syamsurizal
Bioeducation Journal Vol 2 No 2 (2018): Bioeducation Journal
Publisher : Universitas Negeri Padang Address: Biology Education Study Program Faculty Mathematics and Natural Science (FMIPA) Jl. Prof. Dr. Hamka Air Tawar Barat, Padang-West Sumatera-Indonesia Telp. +62751-7057420 - Fax.+62751-7058772 - Ph. +6281363229286

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bioedu.v2i2.136

Abstract

This research is based on the problems that exist in SMPN 22 Padang is the selection of less precise learning model, students' science learning outcomes are still low. Efforts that can be done is to apply advanced organizer learning model on global warming material in SMPN 22 Padang. The purpose of this study is to determine the effect of the implementation of advanced organizer learning model on the results of science learning class VII SMPN 22 Padang. This type of research is experimental research with Randomized Control Group Posttest Only Design research design. Population in this research is all class VII at SMPN 22 Padang registered in Academic Year 2017/2018 amounted to eight class. Sampling was done by using purposive sampling technique, which selected as research sample is class VII.8 as experiment class and class VII.7 as control class. The instrument used is a matter of posttest for knowledge competence. The hypothesis in this study was tested using t-test. Based on the results of research and discussion can be concluded: the implementation of learning model Advance Organizer can improve student learning outcomes (knowledge competence) in SMPN 22 Padang.
Effect of Discovery Learning with Science Literacy Toward Students Sains Learning Competences at VII Grade tut anggraini; Syamsurizal Syamsurizal; Dezi Handayani; Siska Alicia Farma
Bioeducation Journal Vol 3 No 1 (2019): Bioeducation Journal
Publisher : Universitas Negeri Padang Address: Biology Education Study Program Faculty Mathematics and Natural Science (FMIPA) Jl. Prof. Dr. Hamka Air Tawar Barat, Padang-West Sumatera-Indonesia Telp. +62751-7057420 - Fax.+62751-7058772 - Ph. +6281363229286

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bioedu.v3i1.137

Abstract

Student's learning competency which mostly still under Minimum Criterion. This is caused by lack of preparation of student in face of learning process and also more dominated by teacher centered), so the less effective learning process. These problems can be solved by applying discovery learning models containing literacy science. This research is an experimental research with randomized control group design posttest only design. The population of this study is all of the class VII registered in the academic year 2017/2018. The sample was taken by purposive sampling technique that is class VII1 as control class and class VII3 as experiment class. The research instrument used is posttest for knowledge competence and affective and psychomotor observation sheet to see students' affective and psychomotor competence. Hypothesis in this study was tested using t test. The result of the research, concluded that the application of discovery learning model of science literacy can improve the learning competence of science (cognitive, affective and psychomotor) students of class VII.
Prevention and Management Type 2 Diabetes Melitus on the Risk Groups in Korong Pasar Limau Kepala Hilalang Kecamatan 2×11 Kayu Tanam Kabupaten Padang Pariaman Elsa Yuniarti; Dezi Dezi Handayani
Pelita Eksakta Vol 1 No 1 (2018): Pelita Eksakta Vol. 1 No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol1-iss1/10

Abstract

Sumatera Barat dengan mayoritas masyarakatnya beretnis Minangkabau beresiko tinggi menderita DM tipe 2. Etnis Minangkabau memiliki makanan khas yang terkenal kaya lemak dan bersantan tetapi jarang mengkonsumsi sayuran beresiko untuk menderita DM tipe 2. Solusi yang lakukan dalam menjawab permasalahan diatas adalah dengan melaksanakan kegiatan Iptek bagi Masyarakat (IbM) Pencegahan dan Manajemen Diabetes Mellitus Tipe-2 pada kelompok beresiko yakni orang dewasa berusia 40-85 tahun yang tergabung dalam kelompok Posyandu Lansia Mawar Putih I Dusun Sungai Patai dan Posyandu Lansia Mawar Putih II Dusun Batang Paraman di Korong Pasar Limau Kepala Hilalang Kecamatan 2x11 Kayu Tanam Kabupaten Padang Pariaman belum pernah menyentuh aspek pengetahuan, pengelolaan, pencegahan maupun manajemen DM tipe 2. Pada kegiatan IbM di lakukan pemeriksaan gula darah sewaktu dan puasa sehingga ditemukan 21 orang yang kadar gula darah puasa ≥ 126 mg/dL. Dari survei awal tingkat pengetahuan tentang apa itu penyakit diabetes, pada umumnya peserta tidak paham (82%) tentang penyakit diabetes. Penyuluhan tentang Diabetes Mellitus Tipe-2 diberikan pada Lansia telah meningkatkan (95%) pemahaman, pengetahuan dan ketrampilan para lansia agar dapat terhindar dari penyakit DM tipe 2 ini.
Pengaruh Penambahan Beberapa Cairan Rumen Terhadap Produksi Biogas dari Kotoran Sapi Sri Suciati Ningsih; Yuni Ahda; Dezi Handayani
Biospecies Vol. 7 No. 2 (2014): Juli 2014
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biospecies.v7i2.1734

Abstract

Pengembangan teknologi bahan bakar alternatif perlu dilakukan untuk mengurangi ketergantungan masyarakat terhadap bahan bakar fosil. Salah satu teknologi bahan bakar alternatif yang memiliki prospek baik untuk dikembangkan adalah biogas. Penambahan biostarter dapat memaksimalkan produksi biogas. Cairan rumen dapat dijadikan sebagai biostarter yang baik karena di dalamnya terdapat bakteri selulolitik dan metanogenik. Penelitian ini mengenai pengaruh penambahan beberapa cairan rumen terhadap produksi biogas dari kotoran sapi. Penelitian dilakukan di Laboratorium Bioteknologi Universitas Negeri Padang. Metode yang digunakan adalah eksperimen yang disusun dalam Rancangan Acak Lengkap (RAL) dengan empat perlakuan dan tiga ulangan. Perlakuan menggunakan cairan rumen sapi (P1), kerbau (P2), kambing (P3), dan tanpa penambahan cairan rumen (P0). Fermentor berisi substrat dengan perbandingan kotoran sapi:air:cairan rumen adalah 1:1:1 difermentasi selama 7 hari. Variabel yang diukur adalah volume balon penampung biogas (cm3) dan lama nyala biogas (dt). Berdasarkan hasil uji ANOVA (P<0,05) dan uji lanjut DNMRT diketahui bahwa penambahan cairan rumen berpengaruh signifikan terhadap produksi biogas dari kotoran sapi. Penambahan cairan rumen sapi, kerbau, dan kambing pada fermentor yang difermentasi selama 7 hari dapat meningkatkan volume biogas dibandingkan tanpa penambahan cairan rumen. Rerata volume maksimal biogas P1 sebanyak 71,97 cm3, P2 sebanyak 80,26 cm3 sedangkan P0 sebanyak 2,88 cm3. Volume biogas tertinggi diperoleh dari penambahan cairan rumen kambing dengan rerata volume 102,7 cm3 pada hari ke-4.
KARAKTERISTIK CENDAWAN DARK SEPTATE ENDOPHYTE (DSE) PADA AKAR TANAMAN JAGUNG DAN PADI Dezi Handayani
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 18 No. 01 (2017): 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 | Full PDF (251.93 KB) | DOI: 10.24036/eksakta/vol18-iss01/20

Abstract

Pengembangan Asesmen Kemampuan Berpikir Kritis Materi Sistem Sirkulasi untuk Siswa SMA Kelas XI Miftahussa&#039;adiah Miftahussa&#039;adiah; Heffi Alberida; Dezi Handayani
SIMBIOSA Vol 9, No 1 (2020): JURNAL SIMBIOSA
Publisher : Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sim-bio.v9i1.2434

Abstract

Kemampuan berpikir kritis perlu dikembangkan. Siswa yang berpikir kritis tidak hanya menerima informasi yang diperoleh, namun dapat menggunakan informasi tersebut untuk menyelesaikan permasalahannya. Kemampuan berpikir kritis dapat dilatih dengan memberikan asesmen yang berada pada tingkat kognitif C4-C6. Penelitian ini bertujuan untuk menghasilkan asesmen kemampuan berpikir kritis pada materi sistem sirkulasi yang valid dan praktis. Penelitian menggunakan model pengembangan 4-D yang terdiri dari tahap define, design, dan develop. Instrumen pengumpulan data berupa angket uji validitas dan uji praktikalitas (validitas logis), serta soal multiple choice with written justifification (pilihan ganda dengan menuliskan argumen). Data dianalisis dengan menggunakan statistik deskriptif. Penelitian ini menghasilkan asesmen berpikir kritis untuk materi sistem sirkulasi yang valid dan praktis. Hasil uji validitas menunjukkan soal valid (secara logis dan empiris). Reliabilitas soal tinggi yaitu 0,61, tingkat kesukaran soal  antara 0,31 sampai dengan 0,70, dan soal memiliki daya beda cukup, baik dan baik sekali. Daya beda cukup dengan persentase 10%, daya beda baik dengan persentase 60%, dan daya beda baik sekali dengan persentase 30%. Berdasarkan hal tersebut, dapat disimpulkan telah dihasilkan asesmen kemampuan berpikir kritis yang valid secara logis dan empiris, praktis, reliabel dengan tingkat kesukaran sedang, dan memiliki daya pembeda yang baik.
The Ability of the Thermophilic Bacteria Triculture Consortium from Mudiak Sapan Hot Springs to Produce Biofuel Irdawati Irdawati; Putri Rachma Auliya; Dwi Hilda Putri; Dezi Handayani; Yusrizal Yusrizal
Jurnal Penelitian Pendidikan IPA Vol 9 No 4 (2023): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i4.3480

Abstract

Biofuel is an alternative energy to replace fossil fuels. The most popular form of biofuel today is bioethanol. Biofuels are considered as a suitable alternative to fossil fuels because they are more environmentally friendly. Production of bioethanol utilizing thermophilic microorganisms is more profitable because thermophilic microbes generally have the characteristics of being able to use a variety of substrates, low contamination, and resistance to high temperatures. The use of microbial consortia tends to give better results than the use of monoculture isolates to optimize bioethanol yields. The aim of this study was to determine the compatibility and ability of the best thermophilic bacterial triculture consortium from the Mudiak Sapan hot springs in producing biofuel. This research is a descriptive research, to test isolates of a consortium of thermophilic bacteria that produce bioethanol. The results of this study showed that consortium isolates tended to give better results than monoculture isolates. The best thermophilic bacterial triculture consortium from the Mudiak Sapan hot springs in producing biofuels namely MS 12, 17, 18 produced a bioethanol content of 0.863%.
Effect of Papaya Leaf Extract (Carica papaya L.) on Colony Diameter and Percentage of Growth Inhibition of Fusarium oxysporum Meriza Fatma; Moralita Chatri; Mades Fifendy; Dezi Handayani
Jurnal Serambi Biologi Vol. 6 No. 2 (2021): Jurnal Serambi Biologi
Publisher : Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang

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

Abstract

This study aimed to determine the effect of leaf extract concentration of C. papaya on the diameter of colonies F. oxysporum and the percentage of inhibition of growth of F. oxysporum. This research was conducted from February to April 2021 at the Integrated Research Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences, Padang State University. This study was an experimental study consisting of 5 treatments and 3 replications with the administration ofleaf extract at a C. papaya concentration of 0% (control), 10%, 20%, 30% and 40%. The data obtained were analyzed by means of variance (ANOVA) with Duncan's New Multiple Range Test (further testDNMRT)and the percentage of inhibition was analyzed descriptively. The results showed that leaf extract C. papaya at concentrations of 20%, 30% and 40% significantly affected the diameter of thecolonies F. oxysporum. The smallest colony diameter was at a concentration of 40% was 5.35 cm and the largest colony at a concentration of 10% was 6.61 cm. While the smallest percentage of inhibition at a concentration of 10% was 5% and the largest percentage of inhibition is at a concentration of 40% was 23%.
Co-Authors Achyar, Afifatul Ainul Mardiah Alfatimah Azzahra, Balkis AMERIA YUNITA Anisa Asri Anizam Zein Arjulis, Wanda Armen Armen Atifah, Yusni Az-Zahra, Fauziah Azwir Anhar Celsi Ananda Claudia Ayesha Dalilah Linda Sari Lubis, Enny Della Lestari des Dhea Delara Iryanda Dilla, Aprina Dina Sukma Dini Hari Marta Dwi Hilda Putri Eka Vidya Putra Elsa Sri Handayani Elsa Yuniarti Fahra, Fahra Fevria, Resti Finti Nabila, Anggie Fransisco, Sandi Fronica, Imelda Ghean Azrin Mirza Gustina Indriati Haqil Triyatdipa Harlin, Farah Ibtisamah Heffi Alberida Helendra . Ihdina Aurora Nurul Aulia Intan Febriani IRDAWATI Irdawati Irdawati Irdawati Irdawati Irma Lailani Eka Putri Irma Leilani Eka Putri Irma Leilani Eka Putri Kurnia Putri Indrawan Larashinda, Mentari Linda Advinda Linda Wati Mades Fifendy Meriza Fatma Miftahussa&#039;adiah Miftahussa&#039;adiah Moralita Chatri Mukhlis Mukhlis Nabilah, Rezi Nia Ramadhanti Novia Daniati Novita Novenra Nur Shofiatun Nisa Nurul Rahmi Oktavianes Oktavianes Putri Rachma Auliya Putri Rahma Padilla Putri, Irma Leilani Eka Putri, Ulfa Dwi Rafiqi, Aufa Rahmawati Darussyamsu Rahmi Holinesti Rani Zahara Rara Via Jonet Relsas Yogica, Relsas Resti Yulia Ristiono Ristiono Roza Yolanda Rusendra, Nabilla Makra S. Syamsurizal Safira Nurul Fadila Samsuriani Siregar Selaras, Ganda Hijrah Silfani, Novia Silviana Okwisan Siti Nurayni Sity Sarroh Sri Suciati Ningsih Sukma Yuliana Syahrastani, Syahrastani Syiifa kamila Namidya tut anggraini Vauzia, Vauzia Violita Violita Violita Violita Windi Nopitasari Y Yusrizal YOLANDA, PUTRI Yulanda Saputri Yuni Ahda Yusrizal Yusrizal Yusrizal Yusrizal zultsatunni'mah zultsatunni'mah