https://opscitech.com/journal/issue/feed Open Science and Technology 2024-04-01T22:37:32+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/109 Added value analysis of citronella oil processing using the hayami method 2024-02-04T17:28:42+07:00 Kiki Yulianto kikiyulianto@unand.ac.id Teguh Mizwarni Anugrah kikiyulianto@unand.ac.id Santosa Santosa kikiyulianto@unand.ac.id <p>Penelitian ini bertujuan menganalisis nilai tambah yang dihasilkan dari pengolahan minyak serai wangi menggunakan Metode Hayami. Minyak serai wangi merupakan komoditas penting dalam industri parfum dan kosmetik dengan nilai komersial yang signifikan. Metode Hayami digunakan sebagai alat evaluasi untuk mengukur efisiensi dan dampak ekonomi dari proses pengolahan minyak serai wangi. Melalui survei lapangan, pengumpulan data, dan analisis statistik, penelitian ini mengidentifikasi berbagai tahap dalam proses pengolahan minyak serai wangi dan mengukur nilai tambah yang dihasilkan pada setiap tahap. Hasil penelitian menunjukkan bahwa nilai tambah yang dihasilkan dari pengolahan minyak serai wangi adalah Rp1.000/kg. Marjin yang diperoleh didistribusikan untuk masing-masing faktor, yaitu keuntungan sebesar 88%, tenaga kerja sebesar 12%, dan sumbangan input lain sebesar 0%. Temuan ini memberikan wawasan tentang manfaat ekonomi dari pengolahan minyak serai wangi dan memberikan informasi bagi perencanaan pengembangan industri berbasis serai wangi serta upaya meningkatkan kesejahteraan masyarakat lokal, menciptakan peluang ekonomi baru, serta mendukung pertumbuhan sektor ini secara berkelanjutan.</p> <p><em>This study aims to analyze the value-added generated from citronella oil processing using the Hayami Method. Citronella oil is an important commodity in the perfume and cosmetics industry with significant commercial value. The Hayami Method was used as an evaluation tool to measure the efficiency and economic impact of citronella oil processing. Through field survey, data collection, and statistical analysis, this study identified the various stages in the citronella oil processing stages and measured the value-added generated at each stage. The value-added resulted from citronella oil processing was IDR1,000/kg. The margins obtained were distributed to each factor, namely business profit at 88%, labor wages at 12%, and contribution of other inputs at 0%. The findings of this study provide insight into the economic benefits of citronella oil processing and inform development planning for citronella-based industries as well as efforts to improve the welfare of local communities, create new economic opportunities, and support the sustainable growth of this sector.</em></p> 2024-04-03T00:00:00+07:00 Copyright (c) 2024 Kiki Yulianto, Teguh Mizwarni Anugrah, Santosa Santosa https://opscitech.com/journal/article/view/111 Seed germination and adaptation of several national and introduced varieties of spinach plants (Spinacia oleracea L.) in tropical lowlands 2024-04-01T22:03:41+07:00 Ade Sumiahadi ade.sumiahadi@umj.ac.id Dirgahani Putri dirgahani.putri@umj.ac.id Dian Diani Tanjung diandiani@umj.ac.id Refa Firgiyanto refa_firgiyanto@polije.ac.id Abi Mayu Wisesa almaidanyabimayu@gmail.com Muhammad Rafi Wahyu Putra mrwputra@gmail.com <p class="Default" style="text-align: justify; text-justify: inter-ideograph;"><span lang="IN" style="font-size: 10.0pt;">Studi ini bertujuan mempelajari perkecambahan dan adaptasi beberapa varietas nasional dan introduksi tanaman horenso yang ditanam di dataran rendah tropis. Penelitian dilaksanakan pada September–November 2023 di lahan percobaan Fakultas Pertanian, Universitas Muhammadiyah Jakarta. Penelitian terdiri atas dua percobaan: percobaan pertama adalah uji perkecambahan dan daya adaptasi empat varietas tanaman pada <em>tray</em> semai menggunakan media tanam organik. Percobaan ini menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan perlakuan varietas yang terdiri atas empat varietas horenso, masing-masing terdiri dari enam ulangan. Percobaan kedua adalah uji perkecambahan pada dua media perkecambahan yang berbeda, yaitu tanah organik dan tisu basah. Kedua percobaan menggunakan empat varietas yang sama, yakni dua varietas nasional (Kiara F1 dan Okezo 009) dan dua varietas introduksi (Mozart F1 dan Autumn Big-Leaf). Parameter yang diamati adalah persentase perkecambahan biji dan waktu kematian bibit setelah berkecambah. Pengamatan dilakukan pada 0–21 hari setelah semai. Hasil studi ini menunjukkan bahwa semua genotipe tanaman horenso yang digunakan tidak mampu beradaptasi dengan iklim tropis dataran rendah. Semua varietas tanaman memiliki persentase perkecambahan yang rendah, berkisar 0–38%, dan semua benih yang berkecambah mengalami kematian di usia 0–14 hari setelah semai. </span></p> <p>The study aims to examine the germination and adaptation of several national and introduced varieties of spinach plant in tropical lowlands. This study was carried out on September to November 2023 at the experimental field of Faculty of Agriculture, Jakarta Muhammadiyah University. This study consisted of two experiments: the first experiment was a test of germination and adaptability of four spinach varieties on seedling trays using organic growing media. The experiment used a Randomized Complete Block Design (RCBD) with the treatments of spinach verieties consisted of four varieties, each with six replications. The second experiment was a germination test in two different germination media, namely organic soil and moistened tissue. Both experiments used the same four varieties, namely two national varieties (Kiara F1 and Okezo 009) and two introduced varieties (Mozart F1 and Autumn Big-Leaf). The parameters observed were seeds germination percentage and seedlings death time after germination. The observation was carried out at 0 to 21 days after sowing. The results show that all spinach plant genotypes used could not adapt to the climate conditions of tropical lowlands. All four varieties produced low germination percentages, ranging from 0–38%, and all seeds that germinated died within 0–14 days after sowing.</p> 2024-05-10T00:00:00+07:00 Copyright (c) 2024 Ade Sumiahadi, Dirgahani Putri, Dian Diani Tanjung, Refa Firgiyanto, Abi Mayu Wisesa, Muhammad Rafi Wahyu Putra