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Sudiro
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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PEMANFAATAN KULIT BUAH SEEBAGAI PUPUK CAIR DENGAN VARIASI SUMBER GULA DAN KONSENTRASI EM4 Septiansah, Yoga Ferdy; Kurniawan, Wahyu; Sudiro; Rahman, Nanik Astuti
jurnal ATMOSPHERE Vol. 6 No. 2 (2025): ATMOSPHERE
Publisher : Teknik Kimia ITN Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/atmosphere.v6i2.16958

Abstract

Liquid organic fertilizer is one type of fertilizer that is widely circulated in the community which is produced from the fermentation of leaf waste or animal waste. This study aims to utilize fruit waste as a production material for making Liquid Organic Fertilizer (POC), in addition to determining the effectiveness of variations in sugar sources and EM4 concentrations on the quality of the POC produced. The production process of liquid organic fertilizer in this study used types of sugar with variations of granulated sugar, brown sugar, mixed sugar (granulated sugar + brown sugar) and without sugar and EM4 bioactivator concentrations of 10%, 20%, 30%, 40% and 50%. The results obtained from the nitrogen analysis ranged from 0.1-0.3 which when associated with the SNI POC did not meet the standard. Liquid organic fertilizer was obtained from testing the phosphorus content in 30% brown sugar, which was 0.00931. While the best potassium content analysis results were found in the EM4 10% granulated sugar variation sample with a result of 0.30%.
Effect of Power Percentage and Cutting Speed on Tensile Stress Values in Laser Cutting Processes saputra, onery; Nurharyanto , Anwar; Sudiro
Jurnal INOVATOR Vol. 6 No. 2 (2023): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v6i2.261

Abstract

This research was conducted to determine the tensile stress of an object that was cut using a laser cutting machine. The purpose of this study is to determine the strength changes in the workpiece caused by cutting using laser cutting based on power and cutting speed. The workpiece used in this study is a polymer type Polymethylmethacrylate (PMMA) or better known as acrylic. This study uses variations in the amount of power and cutting speed, namely 50% power with a cutting speed of 5 mms, 50% power with a cutting speed of 10mms, 70% power with a cutting speed of 5 mms and 70% power with a cutting speed of 10 mms. From the results of tensile stress testing, the amount of power and speed of acrylic cutting affects the tensile stress of the workpiece. The greater the acrylic cutting power will reduce the tensile stress value of the workpiece by 11.4%. The faster the acrylic cutting will reduce the tensile stress value by 10.7%.
ANALISIS PERUBAHAN FUNGSI LAHAN HUTAN SAGU MENJADI KAWASAN PERUMAHAN BTN GAJAH MADA YAHIM TAHUN 2014 – 2020 Reinaldi Arung Padang; James Modouw; Sudiro; Juliani Wairata; Marsal Arung Lamba
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 5 No. 3 (2025): November: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v5i3.5826

Abstract

Perubahan penggunaan lahan adalah perubahan penggunaan atau aktivitas terhadap suatu lahan yang berbeda dari aktivitas sebelumnya, baik untuk tujuan komersial maupun industry. Perumahan BTN Gajah Mada terletak di Kelurahan Dobonsolo, Distrik Sentani, Kabupaten Jayapura, Provinsi Papua. Perumahan BTN Gajah Mada dibangun tepat diatas lahan hutan sagu sehingga hal itu yang mempengaruhi terjadinya banjir dan terjadi penurunan tanah dilokasi tersebut. Perubahan lahan yang terjadi pada Perumahan BTN Gajah Mada dari tahun 2014-2020 mempengaruhi terjadinya dampak lingkungan sekitar. Penelitian ini menggunakan metode mixed methods untuk menjawab perubahan lahan hutan sagu yang terjadi serta dampak dari pembangunan perumahan BTN Gajah Mada terhadap lingkungan sekitarnya, analisis timeline dan analisis spasial. Hasil dari penelitian ini menunjukan bahwa perubahan lahan hutan sagu menjadi kawasan perumahan BTN Gajah Mada sebesar 9.159m2 akibat dari perubahan lahan hutan sagu tersebut dampak lingkungan yang terjadi yaitu sering terjadinya banjir akibat adanya penurunan tanah yang terjadi sebesar 30-50cm dan adanya usaha milik masyarkat seperti, perkebunan disekitar kawasan perumahan BTN Gajah Mada dan juga usaha batu tela. Kawasan perumahan BTN Gajah Mada dapat dikategorikan dalam kawasan rawan bencana
IMPLEMENTASI FILSAFAT PENDIDIKAN REKONSTRUKSIONISME DI SD N 2 PABUARAN Alfi Rusy; Amilatul Nadifa; Anis Marzuqoh; Aulia Nadifah; Azki Ulima Nur Sani; Nabila Putri; Nazir Arifka; Nur Indah Alfiyana; Sintya Amalia Sholikhah; Suci Widyastuti; Tifani Silmi; Zahrotul Hidayah; Sudiro
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 No. 02, Juni 2026 Produce
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.50352

Abstract

This study analyzes the implementation of reconstructionist philosophy of education at SD N 2 Pabuaran. The study departs from the concern that elementary learning is often reduced to the transfer of subject matter, while students face concrete problems such as waste, bullying, discipline, health, nutrition, and environmental care. This qualitative case study used observation, interviews with the principal, classroom teachers, students, and parents, and documentation of school programs. The data were analyzed thematically by connecting field findings with social reconstruction, contextual learning, character education, environmental education, and school-family partnership. The findings are organized into five core points: reconstruction of school direction through leadership and governance, teachers' efforts to turn classroom learning into dialogue and small projects, eco-pedagogical practices through Adiwiyata culture and waste management, child-friendly school culture and restorative discipline, and the transfer of school values into students' home lives through parental involvement. The study shows that reconstructionism in elementary school grows through routine practices such as cleaning the classroom, sorting waste, discussing problems, respecting friends, maintaining plants, and helping parents at home.
Co-Authors Alfi Rusy Amilatul Nadifa Anis Marzuqoh Arif Surono Arifin Oktabrian Aulia Nadifah Azki Ulima Nur Sani Febriana Sartika Sari Gultom, Ayub JAMES MODOUW Juliani Wairata Kasim Samosir, Rasi Liddini, Laily Marsal Arung Lamba Nabila Putri Nanik Astuti Rahman Nazir Arifka Nita Enjellina Nur Indah Alfiyana Nurharyanto , Anwar Rahmadhani, Suci Nur Ratna Wirawati Rosyida Reinaldi Arung Padang Restu, Tuhu Saputra, Onery Andy Septiansah, Yoga Ferdy Seto, D.B. Sherina Putri Nuswantoro Sintya Amalia Sholikhah Suci Widyastuti SUNARTO T. Simbiak, Irja Tifani Silmi Tommi Wahyu Kurniawan Zahrotul Hidayah