https://opscitech.com/journal/issue/feed Open Science and Technology 2024-01-29T08:35:25+07:00 Ali Rahmat opescitech@gmail.com Open Journal Systems <table cellpadding="2"> <tbody align="top"> <tr> <td width="135px">Journal Title</td> <td><a href="https://opscitech.com/journal"><strong>Open Science and Technology</strong></a></td> </tr> <tr> <td>ISSN</td> <td><strong><a href="https://issn.brin.go.id/terbit/detail/1616657190" target="_blank" rel="noopener">2776-169X</a> (print) | <a href="https://issn.brin.go.id/terbit/detail/1616745735" target="_blank" rel="noopener">2776-1681</a> (online)</strong></td> </tr> <tr> <td>DOI Prefix</td> <td><strong>Prefix 10.33292 </strong>by <strong>Crossref</strong></td> </tr> <tr> <td>Editor in Chief</td> <td><a href="https://sinta.kemdikbud.go.id/authors/profile/6761124" target="_blank" rel="noopener"><strong>Ali Rahmat, Ph.D.</strong></a></td> </tr> <tr> <td>Publisher</td> <td><a href="http://www.ressi.id/" target="_blank" rel="noopener"><strong>Research and Social Study Institute</strong></a></td> </tr> <tr> <td>Frequency</td> <td><strong><a href="https://opscitech.com/journal/issue/archive" target="_blank" rel="noopener">Two issues per year (April and October)</a><br /></strong></td> </tr> <tr> <td valign="top">Citation Analysis</td> <td><strong>Sinta | </strong><a title="Google Scholar" href="https://scholar.google.com/citations?user=M_ig61IAAAAJ" target="_blank" rel="noopener"><strong>Google Scholar</strong></a><strong> | <a href="https://garuda.kemdikbud.go.id/journal/view/27306" target="_blank" rel="noopener">Garuda</a> | Dimension</strong></td> </tr> </tbody> </table> <p><strong>Open Science and Technology</strong> is published by the Research and Social Study Institute as a means to publish research results and review articles from researchers in the fields of natural sciences, agricultural sciences, forestry sciences, engineering sciences, technology, and their applications. This journal is published twice a year (April and October). This journal is published online and in print. Open Science and Technology has the philosophy that this journal is open to anyone, including students, lecturers, researchers, consultants, and practitioners in the field of science and technology in general, to publish the results of their studies or research in this journal. This journal is also expected to become a fast-response journal, fast review, and fast publication. And in the future, it can be accredited nationally and indexed globally. Open Science and Technology has P-ISSN 2776-169X and E-ISSN 2776-1681</p> <p>Distribution: Open Access</p> <p>Frequency: Published biannual (April and October)</p> https://opscitech.com/journal/article/view/104 Study on agronomical characteristics of several introduced cucumber (Cucumis sativus L.) genotypes 2024-01-12T09:49:41+07:00 Ade Sumiahadi ade.sumiahadi@umj.ac.id Adiwijaya Adiwijaya adiwijayalubis@gmail.com <p><em>Cucumber is one of the fruit vegetables favored by the Indonesian people. Its development prospect of commercial cultivation and agribusiness management has been very promising, because the marketing opportunities are not only available domestically, but also abroad. Plant introduction is a process of introducing plants from their place of origin into a new region. This study aims to examine the agronomic characteristics of several introduced cucumber genotypes, and was conducted from October to December 2022 at the experimental field of the Faculty of Agriculture, Jakarta Muhammadiyah University. Randomized Complete Group Design (RCGD) was used with five cucumber genotypes: three introduced genotypes (MIT001, MIT002, and MIT003) and two comparator domestic varieties (Ronaldo and Mercury). The results show that the introduced genotypes produced similar vegetative growth characters to those of their comparator varieties. However, several yield components produced are lower than those of their comparator varieties, as seen from several significantly different parameters. MIT001 and MIT003 produced shorter fruit length than that of their comparator variety (Ronaldo), while MIT002 produced lower plant dry weight and fruit weight per plant than those of its comparator variety (Mercury). MIT003 was able to produce the yield components closest to those of its comparator variety.</em></p> <p>Mentimun merupakan salah satu sayuran buah yang banyak digemari oleh masyarakat Indonesia. Prospek pengembangan budidaya mentimun secara komersial dan pengelolaannya dalam skala agribisnis semakin cerah, karena peluang pemasaran tidak hanya dilakukan di dalam negeri, tetapi juga mancanegara. Introduksi tanaman merupakan suatu proses memperkenalkan tanaman dari tempat asal tumbuhnya ke suatu daerah (negara) baru. Penelitian ini bertujuan mempelajari karakteristik agronomis beberapa genotipe mentimun hasil introduksi. Penelitian ini dilaksanakan dari bulan Oktober sampai Desember 2022 di lahan percobaan Fakultas Pertanian Universitas Muhammadiyah Jakarta. Rancangan penelitian yang digunakan yaitu Rancangan Kelompok Lengkap Teracak (RKLT) dengan lima taraf genotipe mentimun, yaitu tiga genotipe introduksi (MIT001, MIT002, dan MIT003) dan dua varietas nasional sebagai pembanding (Ronaldo dan Merkuri). Hasil penelitian menunjukkan bahwa setiap genotipe introduksi yang diujikan secara umum memiliki karakter pertumbuhan vegetatif yang sama dengan varietas pembandingnya, namun memiliki beberapa karakter komponen produksi yang lebih rendah dari varietas nasional pembandingnya. Genotipe introduksi MIT001 dan MIT003 memiliki panjang buah yang lebih pendek dari varietas nasional pembandingnya (Ronaldo), sedangkan MIT002 menghasilkan bobot kering tanaman dan bobot buah per tanaman yang lebih rendah dari varietas nasional pembandingnya (Merkuri). Genotipe MIT003 adalah genotipe introduksi yang mampu menghasilkan produksi yang paling mendekati varietas pembandingnya.</p> 2023-12-31T00:00:00+07:00 Copyright (c) 2023 Ade Sumiahadi, Adiwijaya Adiwijaya https://opscitech.com/journal/article/view/105 Effect of application frequency of oil palm fronds (Elaeis guineensis Jacq.) local microorganisms on the growth of Eucalyptus grandis CGP 105 seedlings 2024-01-15T16:41:38+07:00 Yudia Azmi udiaazmi@gmail.com Melfa Sulvia Lumban Batu udiaazmi@gmail.com Nursyam Arrozi udiaazmi@gmail.com <p><em>This </em><em>study</em><em> aims to determine the </em><em>effect of application </em><em>frequency</em><em> of</em> <em>oil palm fronds’ </em><em>local microorganisms </em><em>(LMO) on</em><em> the growth of </em>Eucalyptus grandis<em> CGP 105</em><em> seedlings</em><em>, and to determine </em><em>the application </em><em>frequency </em><em>that produce</em><em> the</em><em> best</em><em> growth o</em><em>n </em>Eucalyptus grandis<em> CGP 105</em><em> plants</em><em>. This study </em><em>appli</em><em>ed Randomized Block Design consisting of </em><em>5 </em><em>treatments and </em><em>4</em><em> replications, namely P0</em><em>:</em><em> without </em><em>LMO</em><em> (control), P1</em><em>:</em> <em>1 time</em> <em>of application</em><em> (7 </em><em>d</em><em>ays </em><em>a</em><em>fter </em><em>p</em><em>lanting</em><em>/</em><em>DAP), P2</em><em>:</em> <em>2 times </em><em>of application </em><em>(7 and 14 DAP), P3</em><em>:</em> <em>3 times </em><em>of application </em><em>(7, 14</em><em>,</em><em> and 21 </em><em>DAP</em><em>), and P4</em><em>: </em><em>4 times </em><em>of application </em><em>(7, 14 , 21</em><em>,</em><em> and 28 DAP). </em><em>The p</em><em>arameters observed </em><em>were</em><em> plant height (cm), leaf length (cm), leaf width (cm), number of leaves (strands)</em><em>,</em><em> and stem diameter (mm). Based on ANOVA results at the 5% </em><em>level, the application of oil palm fronds’ LMO</em> <em>on </em>Eucalyptus grandis<em> CGP 105 seedlings</em> <em>had a significant effect on </em><em>all measured parameters</em><em>. The best </em><em>application frequency of oil palm fronds’ LMO</em> <em>is</em> <em>P4 treatment</em><em>,</em><em> which resulted in </em><em>the average of </em><em>plant height of 25</em><em>.</em><em>83 cm, leaf length of 7</em><em>.</em><em>47 cm, leaf width </em><em>of </em><em>3</em><em>.</em><em>54 cm, number of leaves </em><em>of</em><em> 13</em><em>.</em><em>25</em><em> strands</em><em>, and stem diameter </em><em>of</em><em> 2</em><em>.</em><em>45 mm.</em></p> <p>Penelitian ini bertujuan mengetahui pengaruh frekuensi pemberian mikroorganisme local (MOL) pelepah kelapa sawit (<em>Elaeis guineensis</em> Jacq.) terhadap pertumbuhan bibit <em>Eucalyptus grandis </em>CGP 105, serta mengetahui frekuensi pemberian MOL yang menghasilkan pertumbuhan terbaik pada tanaman <em>Eucalyptus grandis</em> CGP 105. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang terdiri dari 5 perlakuan dan 4 ulangan, yaitu P0: tanpa MOL (kontrol), P1: 1 kali pemberian (7 hari setelah tanam/HST), P2: 2 kali pemberian (7 dan 14 HST), P3: 3 kali pemberian (7, 14, dan 21 HST), dan P4: 4 kali pemberian (7, 14, 21, dan 28 HST). Parameter yang diamati meliputi tinggi tanaman (cm), panjang daun (cm), lebar daun (cm), jumlah daun (helai), dan diameter batang (mm). Hasil uji ANOVA pada taraf 5% menunjukkan bahwa pemberian MOL pelepah kelapa sawit pada bibit <em>Eucalyptus grandis</em> CGP 105 berpengaruh terhadap semua parameter yang diamati. Frekuensi pemberian MOL pelepah kelapa sawit terbaik adalah perlakuan P4, yang menghasilkan rerata tinggi tanaman 25,83 cm, panjang daun 7,47 cm, lebar daun 3,54 cm, jumlah daun 13,25 helai, dan diameter batang 2,45 mm.</p> 2023-12-31T00:00:00+07:00 Copyright (c) 2023 Yudia Azmi, Melfa Sulvia Lumban Batu, Nursyam Arrozi1 https://opscitech.com/journal/article/view/106 Hypothermia first aid application using android based monitoring system 2024-01-16T09:19:33+07:00 Eko Budihartono tara.niscita@gmail.com Nurohim Nurohim tara.niscita@gmail.com Irfan Nugroho tara.niscita@gmail.com Andrean Prananda tara.niscita@gmail.com <p><em>This study was motivated by the urgency to address hypothermia, a serious condition that can be fatal due to a drastic decrease in body temperature, especially in the context of mountain climbing with limited access to medical equipment that is not easily portable. This study aims to create an Android-based hypothermia first aid application for the management and prevention of hypothermia during outdoor activities. The device utilizes NodeMCU, Esp8266, pulse sensor, and DSI8B20 sensor to measure body temperature, heart rate, and oxygen levels, while employing a heating blanket as the main output. The </em><em>W</em><em>aterfall method was used, comprised analysis, designing, implementation, testing, and maintenance. The device was tested on mountain climbers and was declared capable of detecting hypothermia in real-time, providing first aid by activating blanket warming. Additionally, the use of a microcontroller-based hypothermia monitoring system application was implemented with main menu options such as Home, Monitoring, and Data, thus facilitating users to monitor body conditions and take appropriate first aid actions. These findings indicate that this application can advance medical technology, reduce the mortality rate due to hypothermia, and significantly contribute to the effectiveness of medical reporting and response systems. The analysis on 50 mountain climbers as participants regarding the use of Android-based hypothermia first aid application resulted in a conformity level of 96%.</em></p> <p>Studi ini dilatarbelakangi oleh urgensi menangani hipotermia, kondisi serius yang dapat bersifat fatal akibat penurunan suhu tubuh secara drastis, terutama dalam konteks pendakian gunung dengan keterbatasan peralatan medis yang tidak mudah dibawa. Studi ini bertujuan membuat aplikasi pertolongan pertama hipotermia berbasis Android untuk menangani dan mencegah hipotermia saat beraktivitas di luar ruangan. Alat ini menggunakan NodeMCU, Esp8266, sensor detak jantung, dan sensor DSI8B20 untuk mengukur suhu tubuh, detak jantung, dan kandungan oksigen, dengan memanfaatkan selimut pemanas sebagai output utama. Metode yang digunakan adalah metode waterfall, mencakup analisis, desain, implementasi, pengujian, dan pemeliharaan. Alat telah diuji coba kepada pendaki gunung dan mampu mendeteksi hipotermia secara <em>real-time</em>, yakni memberikan pertolongan pertama dengan mengaktifkan blanket warming. Selain itu, penggunaan aplikasi sistem monitoring hipotermia berbasis mikrokontroler juga telah dilakukan dengan menu utama Home, Monitoring, dan Data, yang memudahkan pengguna untuk memantau kondisi tubuh dan mengambil tindakan pertolongan pertama yang tepat. Hasil menunjukkan bahwa aplikasi ini dapat meningkatkan teknologi medis, mengurangi tingkat kematian akibat hipotermia, serta memberikan kontribusi signifikan dalam efektivitas sistem pelaporan dan penanganan medis. Analisis terhadap 50 pendaki gunung sebagai partisipan dalam penggunaan aplikasi pertolongan pertama hipotermia berbasis Android menghasilkan tingkat kesesuaian sebesar 96%.</p> 2023-12-31T00:00:00+07:00 Copyright (c) 2023 Eko Budihartono, Nurohim Nurohim, Irfan Nugroho, Andrean Prananda https://opscitech.com/journal/article/view/103 Effectiveness of ethanol extract of rambai fruit peel (Baccaurea motleyana Mull. Arg.) on the hematological profile of diabetic mice 2024-01-12T10:03:15+07:00 Ria Ceriana cherry4n4@yahoo.com Savira Meutia cherry4n4@yahoo.com Annisa Ammalia Kiti cherry4n4@yahoo.com Lidyawati Lidyawati cherry4n4@yahoo.com <p>Penelitian ini bertujuan mengetahui pengaruh ekstrak etanol kulit buah rambai (<em>Baccaurea motleyana </em>Mull. Arg.) terhadap profil hematologi mencit jantan (<em>Mus musculus</em>) guna mengetahui dosis yang efektif dalam meningkatkan profil hematologi mencit jantan, serta untuk mengetahui toksisitas ekstrak etanol kulit buah rambai. Penelitian ini menerapkan Rancangan Acak Lengkap (RAL) yang terdiri dari enam perlakuan, yaitu mencit diabetes yang diberi akuades (kontrol negatif) (P1), mencit diabetes yang diberi obat glibenklamid (kontrol positif) (P2), serta mencit diabetes yang diberi ekstrak etanol kulit buah rambai pada dosis 200 mg/kg berat buah (bb) (P3), 400 mg/kg bb (P4), 800 mg/kg bb (P5), dan 1.600 mg/kg bb (P6). Terdapat empat replikasi untuk masing-masing perlakuan. Data yang diperoleh dianalisis secara statistik menggunakan ANOVA dan diuji lanjut menggunakan uji Duncan (DMRT) pada tingkat kepercayaan 95%. Hasil studi ini menunjukkan bahwa ekstrak etanol kulit buah rambai berpengaruh nyata terhadap kadar hemoglobin, jumlah eritrosit, dan jumlah leukosit mencit jantan. Dosis terbaik untuk meningkatkan kadar hemoglobin adalah 400 mg/kg bb. Dosis terbaik untuk meningkatkan jumlah eritrosit adalah 1600 mg/kg bb. Semua dosis perlakuan ekstrak mampu meningkatkan jumlah leukosit.</p> <p><em>This study aims to determine the effect of ethanol extract of rambai fruit peel (</em>Baccaurea motleyana <em>Mull. Arg.) on the hematological profile of male mice (</em>Mus musculus<em>), to determine the effective dose in increasing their hematological profile, and to determine the toxicity of the ethanol extract of rambai fruit peel. This study applied completely randomized design (CRD) consisting of six treatments: diabetic mice treated with distilled water (negative control) (P1), diabetic mice treated with glibenclamide drug (positive control) (P2), and diabetic mice treated with ethanol extract of rambai fruit peel at a dose of 200 mg/kg fruit weight (fw) (P3), 400 mg/kg fw (P4), 800 mg/kg fw (P4), and 1,600 mg/kg fw (P6). There were four replications for each treatment. The data obtained were statistically analyzed using ANOVA and further tested using DMRT at a 95% confidence level. The results show that the ethanol extract of rambai fruit peel significantly affected the hemoglobin levels, the number of erythrocytes, and the number of leukocytes of the mice. The best dose </em><em>to</em><em> increas</em><em>e the</em> <em>hemoglobin levels was 400 mg/kg fw. The best dose </em><em>to </em><em>increas</em><em>e</em><em> the number of erythrocytes was 1600 mg/kg fw. All extract doses was able to increase the number of leucocytes.</em></p> <p> </p> 2023-12-31T00:00:00+07:00 Copyright (c) 2023 Ria Ceriana, Savira Meutia, Annisa Ammalia Kiti, Lidyawati Lidyawati https://opscitech.com/journal/article/view/108 Isolation and identification of arbuscular mycorrhizal fungi (amf) microscopically in the rhizosphere of peanut plants 2024-01-23T17:57:25+07:00 Fradilla Swandi fradillaswandi@gmail.com Eri Sulyanti fradillaswandi@gmail.com Darnetty Darnetty fradillaswandi@gmail.com <p>Fungi Mikoriza Arbuskular (FMA) merupakan jamur yang bersimbiosis dengan perakaran tumbuhan tingkat tinggi. FMA dapat berperan sebagai agen biokontrol dan biofertilizer. Studi ini bertujuan mengetahui jenis-jenis FMA pada rhizosfer tanaman kacang tanah di Nagari Sawah Tangah, Kecamatan Pariangan, Kabupaten Tanah Datar dan sebagai tahapan awal dalam pemanfaatan FMA sebagai agen biokontrol dan biofertilizer. Sebanyak lima sampel tanah diambil menggunakan teknik <em>purposive random sampling</em>. Sampel tanah yang diperoleh disaring menggunakan teknik penyaringan basah. Identifikasi spora FMA dilakukan hingga tingkat genus berdasarkan karakteristik morfologi, yakni bentuk, warna, serta ornamentasi spora. Hasilnya menunjukkan bahwa jumlah spora FMA tertinggi pada rhizosfer tanaman kacang di Nagari Sawah Tangah, Kecamatan Pariangan, Kabupaten Tanah Datar adalah dari genus <em>Glomus</em> (3 tipe), yakni <em>Glomus</em> sp-1 sebanyak 15 spora, <em>Glomus</em> sp-2 sebanyak 12 spora, dan G<em>lomus</em> sp-3 sebanyak 74 spora (total 101 spora). Jumlah tertinggi kedua adalah dari genus <em>Acaulospora</em> (1 tipe) sebanyak 27 spora, sementara jumlah spora FMA terendah adalah dari genus <em>Gigaspora</em> (1 tipe) sebanyak 9 spora per 100 gr sampel tanah.</p> <p><em>Arbuscular Mycorrhizal Fungi (AMF) are fungi that have a symbiotic relationship with the roots of higher plants. AMF can act both as biocontrol agent and biofertilizer. This study aims to determine the types of AMF in the rhizosphere of peanut plants in Nagari Sawah Tangah, Pariangan Subdistrict, Tanah Datar Regency, as an initial stage in the application of AMF as a biocontrol agent and biofertilizer. Five soil samples were taken using a purposive random sampling technique. The soil samples obtained were then filtered using a wet filtration technique. Identification of AMF spores was carried out at the genus level based on their morphological characteristics, namely shape, color, and spore ornamentation. The results reveal that </em>t<em>he highest number of AMF spores in the rhizosphere of peanut plants in Nagari Sawah Tangah, Pariangan Subdistrict, Tanah Datar Regency is from the genus </em>Glomus<em> (3 types), namely </em>Glomus<em> sp-1 with 15 spores, </em>Glomus<em> sp-2 with 12 spores, and </em>Glomus<em> sp-3 with 74 spores (a total of 101 spores). The second highest number is from the genus </em>Acaulospora<em> (1 type) with 27 spores, and the lowest number of AMF spores is from the genus </em>Gigaspora<em> (1 type) with 9 spores per 100 gr of soil sample.</em></p> 2023-12-31T00:00:00+07:00 Copyright (c) 2023 Fradilla Swandi, Eri Sulyanti, Darnetty Darnetty