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PENGARUH VARIASI KONSENTRASI INHIBITOR EKSTRAK KULIT BUAH KAKAO TERHADAP LAJU KOROSI PIPA BAJA KARBON A53 PADA MEDIA AIR LAUT Purnomo, Adi; Sumarji, Sumarji
ROTOR Vol 8, No 1 (2015)
Publisher : ROTOR

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Abstract

Corrosion is a chemical phenomenon that occurs in metal materials in a wide variety of environmental conditions. always good corrosion causing losses losses that are directly or indirectly impacted. one way of corrosion prevention is the addition of corrosion inhibitors. Corrosion inhibitor is a substance that is added to the medium to prevent or reduce the rate of corrosion of metals in the environment . In this study , the authors make use of a corrosion inhibitor cocoa peel extract from the rind of the results of maceration with the variation of the cocoa peel extract concentration was 0 ppm , 500 ppm , 1000 ppm , 1500 ppm and 2000 ppm in sea water media using specimens of carbon steel pipe A53,The purpose of this study was to determine the effect of variations in the concentration of cocoa peel extract against corrosion rate and efficiency of inhibitors that occur in the carbon steel pipe A53 and analysis form macroscopic and microscopic corrosion that occurs in the specimen by using a camera and test equipment microscope with 200x magnification. From the results of this study concluded that there are significant variations in the concentration of the tea leaf extract against corrosion rate of carbon steel pipe A53. At 2000 ppm concentration variation, occurred average value of the lowest rate of corrosion inhibitor that is 0,2384 mdd and highest efficiency 83.37 %.
PENGARUH VARIASI KONSENTRASI INHIBITOR EKSTRAK KULIT BUAH KAKAO TERHADAP LAJU KOROSI PIPA BAJA KARBON A53 PADA MEDIA AIR LAUT Purnomo, Adi; Sumarji, Sumarji
ROTOR Vol 8, No 1 (2015)
Publisher : ROTOR

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.347 KB)

Abstract

Corrosion is a chemical phenomenon that occurs in metal materials in a wide variety of environmental conditions. always good corrosion causing losses losses that are directly or indirectly impacted. one way of corrosion prevention is the addition of corrosion inhibitors. Corrosion inhibitor is a substance that is added to the medium to prevent or reduce the rate of corrosion of metals in the environment . In this study , the authors make use of a corrosion inhibitor cocoa peel extract from the rind of the results of maceration with the variation of the cocoa peel extract concentration was 0 ppm , 500 ppm , 1000 ppm , 1500 ppm and 2000 ppm in sea water media using specimens of carbon steel pipe A53,The purpose of this study was to determine the effect of variations in the concentration of cocoa peel extract against corrosion rate and efficiency of inhibitors that occur in the carbon steel pipe A53 and analysis form macroscopic and microscopic corrosion that occurs in the specimen by using a camera and test equipment microscope with 200x magnification. From the results of this study concluded that there are significant variations in the concentration of the tea leaf extract against corrosion rate of carbon steel pipe A53. At 2000 ppm concentration variation, occurred average value of the lowest rate of corrosion inhibitor that is 0,2384 mdd and highest efficiency 83.37 %.
SEBARAN PESUT (Orcaella brevirostris) DI PERAIRAN KABUPATEN KUBU RAYA DAN DI PERAIRAN KABUPATEN KAYONG UTARA PROVINSI KALIMANTAN BARAT Purnomo, Adi; Rifanjani, Slamet; Wahdina, .
JURNAL HUTAN LESTARI Vol 5, No 1 (2017): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v5i1.18418

Abstract

Porpoises or freshwater dolphins (Orcaella brevirostris), of Delphinidae family and is a kind of marine mammals. Porpoises are one of oceanic dolphins biota but this group can live in the sea, brackish or fresh water. This species distributed in the shallow waters of tropical and subtropical Indo-Pacific from northern Australia waters, Papua New Guniea, to the Bengal Bay, especially in Brahmaputra and Ganges of India River waters, mekong in Vietnam, Laos and Cambodia, the Mahakam River in East Kalimantan and Ayeyarwady river in Myanmar. This study is aimed to determine the distribution of the dolphins (Orcaella brevirostris) in the waters kubu raya district and waterways Kayong utara districts. This study uses survey / observation method, population observation method using cruising with a ship. The survey results were the discovery of the dolphins numbered 13 tails and are in three different groups. The first group was found in simpang lidah area. Kubu Raya district 9 tails, the second group was found in Paket 3 (Batu Ping). Kayong Utara District 2 tails and a third group in bumbun estuaries. Kubu Raya District 2 tails. Keyword: District Kubu Raya, District Kayong Utara Waters. Pesut (Orcaella brevirostris)
Struktur Bangunan Gedung Menggunakan Software Bim Revit (Studi Kasus : Pembangunan Gedung Graha Pemuda Kompleks Katedral Jakarta) Hakim, Zikril; Purnomo, Adi; Yasinta, Rezi Berliana
Jurnal Pendidikan Tambusai Vol. 7 No. 3 (2023): Desember 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i3.10832

Abstract

Building Information Modeling (BIM) BIM adalah seperangkat teknologi, proses, kebijakan yang seluruh prosesnya berjalan secara kolaborasi dan integrasi dala sebuah model digital. BIM 3D itu disebut juga dengan model digital 3 dimensi. Banyak yang sudah mengetahui tapi kadang masih banyak orang yang salah memahaminya. Jika orang pada umumnya kenal gambar 3D itu hanya sebatas gambar yang mempunyai 3 sisi maka yang dimaksud dengan BIM 3D adalah Model 3D bangunan yang sudah berisi parameter informasi, komponen yang lebih detail dan pastinya bisa diintegrasikan ke berbagai platform dan bisa ditingkatkan ke dimensi selanjutnya. Pada pembangunan proyek Graha Pemuda Kompleks Katedral Pemuda saat ini menggunakan bim 2D yaitu autocad, pada bim 2D yaitu seperti autocad memiliki kekurangan yaitu harus menghitung volume dengan manual dan juga dalam permodelan tulangan. Pada bim 3D dapat menampilkan permodelan keseluruhan gedung dan juga memudahkan menghitung volume suatu bangunan gedung. Penelitian ini diharapkan dapat bermanfaat untuk memudahkan menghitung volume bangunan gedung dan mempermudah memahami gambar perancangan. Pada penelitian ini peneliti dalam pengumpulan datanya menggunakan metode kuantitatif. Dari hasil pemodelan yang telah dilakukan dengan menggunakan konsep Building Information Modeling (BIM) menjadi lebih efektif dan efisien dikarenakan semua informasi seperti elemen struktur dapat dimodelkan dengan lebih cepat, akurat, rinci seperti pemodelan tulangan sebuah struktur dan juga dapat mengetahui tabrakan elemen struktur dengan elemen MEP. Konsep BIM juga dapat menampilkan perhitungan dan analisis volume struktur.
PENDAMPINGAN DIGITALISASI PERPUSTAKAAN DAN PELATIHAN OPERASIONAL SISTEM DI SEKOLAH DASAR NEGERI 1 SAWOO PONOROGO Awaludin, Asep; Majid, M. Kharis; Purnomo, Adi; Setyo, Dito; Yusril, Raden
Jurnal Terapan Abdimas Vol 9, No 1 (2024)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/jta.v9i1.17846

Abstract

Abstract. In this era dominated by digital advancements, reading books in libraries often loses its appeal for students. Therefore, there is a need for innovation in library management that aligns with the times. The digitalization of libraries and operational system training at SDN 1 Sawoo Ponorogo is carried out to advance information technology within the library. Additionally, it aims to enhance the efficiency and effectiveness of library management and operational systems at SDN 1 Sawoo Ponorogo. There are four methods utilized in this support initiative: conducting a library location survey, providing direct training to library staff, offering continuous guidance and evaluation to library staff. The results of this accompaniment indicate that the digitalization of the library and operational system training at SDN 1 Sawoo can enhance accessibility and efficiency in library management while maximizing its benefits. Thus, this support initiative provides substantial advantages for modern library management, especially in achieving effective and efficient library access. Abstrak. Pada Zaman yang serba digital ini, sering kali menjadikan membaca buku di Perpustakaan tidak menarik lagi bagi siswa. Maka dari itu perlu adanya inovasi dalam pengelolaan Perpustakaan yang sesuai dengan zaman ini. Pendampingan Digitalisasi perpustakaan dan pelatihan operasional sistem di SDN 1 Sawoo Ponorogo ini dilakukan untuk mengembangkan teknologi informasi di perpustakaan tersebut. Selain itu bertujuan juga untuk meningkatkan efisiensi dan efektivitas pengelolaan perpustakaan dan sistem operasional yang ada di SDN 1 Sawoo Ponorogo. Metode yang digunakan dalam pendampingan ini ada empat, yaitu: survey lokasi Perpustakaan, pelatihan langsung kepada Staf Perpustakaan, dan proses pendampingan serta evaluasi kepada Staf Perpustakaan. Hasil dari pendampingan ini menunjukkan bahwa digitalisasi perpustakaan dan pelatihan operasional sistem SDN 1 Sawoo dapat meningkatkan aksesibilitas dan efisiensi pengelolaan perpustakaan serta memaksimalkan manfaatnya. Dengan demikian pendampingan ini memberikan manfaat yang besar untuk pengelolaan perpustakaan modern, khususnya dalam pengaksesan perpustakaan yang efektif dan efisien.  
Persepsi nelayan terhadap penangkapan ikan terukur ditinjau dari aspek sosial ekonomi dan lingkungan Poltak, Hendra; Handayani; Muhfizar; Ndahwali, Daniel Heintje; Gunaisah, Endang; Karubaba, Oktovianus Cristian; Purnomo, Adi
Jurnal Sosial Ekonomi Perikanan Vol 9 No 3 (2024): Jurnal Sosial Ekonomi Perikanan
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jsep.v9i3.105

Abstract

This study aims to understand the perceptions of fishermen towards the regulated fishing policy implemented by the Indonesian government. This policy is an effort to maintain the sustainability of fishery resources and marine ecosystems. The research method used is a quantitative survey with a descriptive approach, conducted on fishermen in the Sorong Manoi District, West Papua. Data were collected through questionnaires, structured interviews, and field observations, with a sample of 72 fishermen. The results of the study show that most fishermen have a positive understanding of this policy, recognizing its benefits in maintaining the sustainability of fish resources and reducing conflicts among fishermen. However, there are concerns related to the short-term economic impact and the need for more effective socialization and technical assistance. Fishermen also realize the importance of maintaining the marine ecosystem and support the use of environmentally friendly fishing gear.
ANALISIS DAYA TAHAN AEROBIK (VO2MAX) MAHASISWA PENJASKESREK FKIP UNIVESITAS ABULYATAMA YANG MENGIKUTI MATAKULIAH ATLETIK Purnomo, Adi; Juwanda, Rawi; Musran, Musran; Syahrinursaifi, Syahrinursaifi
Jurnal Dedikasi Pendidikan Vol 8, No 2 (2024): Juli 2024
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/dedikasi.v8i2.5070

Abstract

The purpose of this study was to analyze aerobic endurance (VO2Max) in Health and Recreation Physical Education students, Faculty of Teacher Training and Education, Abulyatama University who took the Athletics Course. This research is a type of descriptive research with a quantitative approach. The population and research sample totaled 35 Students of Physical Education, Health and Recreation, Faculty of Teacher Training and Education, Abulyatama University, Class of 2022. The data collection for this study was through a 15-minute running test and measurement. The results showed that the average analysis of aerobic endurance (VO2Max) of Physical Education Health and Recreation students, Faculty of Teacher Training and Education, Abulyatama University who took part in the Athletics Course was 33.79 (very poor category), with the following details: (1) as many as 2 students (5.71%) are in the medium category, (2) as many as 33 students (94.29%) were in the very poor category. The conclusion of this research is that the aerobic endurance (VO2Max) of Physical Education Health and Recreation students at the Faculty of Teacher Training and Education, Abulyatama University who take the Athletics Course is very poor
Analisis Penerapan Keselamatan dan Kesehatan Kerja di Area Kilang dan Utilitas PPSDM MIGAS Cholifah, Soflina Nur; Nurjannah, Siti; Qodriyah, Lailatul; Purnomo, Adi
Swara Patra Vol 15 No 1 (2025): Swara Patra : Majalah Ilmiah PPSDM Migas
Publisher : Pusat Pengembangan Sumber Daya Manusia Minyak dan Gas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37525/sp/2025-1/565

Abstract

Keselamatan dan Kesehatan Kerja (K3) merupakan aspek krusial dalam industri minyak dan gas, terutama di lingkungan kerja yang memiliki potensi risiko tinggi seperti kilang minyak. Penelitian ini bertujuan untuk menganalisis implementasi sistem K3 di area kilang utilitas PPSDM Migas Cepu, dengan fokus pada pengelolaan risiko kerja, penerapan standar keselamatan, dan dampak terhadap lingkungan. Metode yang digunakan dalam penelitian ini meliputi observasi langsung di unit kilang utilitas, wawancara dengan bagian K3, serta studi literatur terkait peraturan keselamatan industri. Hasil penelitian menunjukkan bahwa PPSDM Migas Cepu telah menerapkan sistem manajemen K3 berbasis ISO 45001, dengan berbagai langkah mitigasi bahaya, termasuk penggunaan alat pelindung diri (APD), inspeksi rutin, penerapan sistem izin kerja, serta pengelolaan limbah industri. Selain itu, PPSDM Migas juga memiliki fasilitas kesehatan yang mendukung keselamatan tenaga kerja, seperti poliklinik dan program pemeriksaan kesehatan berkala. Pengukuran kebisingan, kualitas udara, serta pencahayaan juga dilakukan untuk menjaga lingkungan kerja yang aman. Dalam proses produksi, potensi bahaya seperti ledakan, kebocoran gas, dan kecelakaan mekanis telah diantisipasi melalui penerapan teknologi keselamatan, seperti sistem Burner Management pada furnace dan pemantauan kondisi peralatan secara berkala. Implementasi yang baik dalam sistem K3 ini diharapkan dapat mengurangi risiko kecelakaan kerja, meningkatkan efisiensi operasional, serta menjaga keberlanjutan lingkungan industri.
Perancangan Sistem Profiling Pelaku Usaha dengan Metode Spiral Model Purnomo, Adi; Hegarini, Ega
Jurnal Minfo Polgan Vol. 14 No. 1 (2025): Artikel Penelitian
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/jmp.v14i1.14955

Abstract

Penyelenggaraan Perizinan Berusaha Berbasis Risiko melalui Sistem Online Single Submission (OSS) merupakan pelaksanaan Undang-Undang Nomor 11 Tahun 2020 Tentang Cipta Kerja. OSS Berbasis Risiko wajib digunakan oleh Pelaku Usaha, Kementerian/Lembaga, Pemerintah Daerah, Administrator Kawasan Ekonomi Khusus (KEK), dan Badan Pengusahaan Kawasan Perdagangan Bebas Pelabuhan Bebas (KPBPB). Kementerian Perdagangan memanfaatkan banyak sistem informasi yang secara bisnis proses saling berkaitan antara satu layanan dengan layanan lainnya, namun sistem informasi tersebut masih terpisah-pisah sehingga sulit untuk memperoleh kesatuan informasi terkait pelaku usaha perdagangan. Penelitian ini berhasil marancang Sistem Profiling Pelaku Usaha (SPPU) dengan menggunakan metode Spiral Model untuk membantu pimpinan dalam menentukan kebijakan yang tepat guna dengan fitur-fitur Perusahaan OSS, Eksportir, Buyer, Distribution Dashboard, Distribution Receive NIB, Distribution Receive License, Distribution Receive File DS, Check API NIB, Check API NPWP, dan Manajemen User. Pengujian SPPU dengan metode blackbox testing diperoleh hasil bahwa seluruh rancangan fitur dapat berjalan dengan baik.
PEMANFAATAN PLATFORM SEKOLAHKU DALAM PEMBELAJARAN TEKS NOVEL DI SMA AL HIKMAH SURABAYA: STUDI KUALITATIF Purnomo, Adi
LANGUAGE : Jurnal Inovasi Pendidikan Bahasa dan Sastra Vol. 4 No. 4 (2024)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/language.v4i4.5185

Abstract

ABSTRACT In the modern era, education is required to integrate technology into the learning process to keep up with the times. The use of technology can enhance student engagement through more interactive and engaging methods, while also strengthening the effectiveness of content delivery. Therefore, integrating technology is an essential step in creating relevant and high-quality learning. This study aims to describe the application of the digital platform of my school as a medium of learning novel texts at Al Hikmah Surabaya High School. By using descriptive qualitative method, this research involves class XII students and Indonesian language teachers as data sources. Data collection techniques were conducted through observation, interviews, and documentation. The results obtained show that my school provides an interesting form of packaging of learning materials through the integration of multimedia content, formative assessments, and interactive features that can increase students' motivation and understanding of novel texts. The platform also supports the flexibility of the learning process, providing a platform for learners to learn independently and collaboratively. Data analysis showed a significant increase in learners' engagement during the learning process. ABSTRAK Pada era modern, pendidikan dituntut untuk mengintegrasikan teknologi dalam proses pembelajaran guna menyesuaikan diri dengan perkembangan zaman. Penggunaan teknologi dapat meningkatkan keterlibatan peserta didik melalui metode yang lebih interaktif dan menarik, serta memperkuat efektivitas dalam penyampaian materi. Dengan demikian, integrasi teknologi menjadi langkah penting untuk menciptakan pembelajaran yang relevan dan berkualitas. Penelitian ini bertujuan untuk mendeskripsiskan penerapan platform digital sekolahku sebagai media pembelajaran teks novel di SMA Al Hikmah Surabaya. Dengan menggunakan metode deskriptif kualitatif, penelitian ini melibatkan peserta didik kelas XII dan guru Bahasa Indonesia sebagai sumber data. Teknik pengumulan data dilakukan melalui observasi, wawancara, dan dokumentasi. Hasil penelitian yang didapatkan menunjukkan bahwa sekolahku memberikan bentuk pengemasan materi pembelajaran yang menarik melalui integrasi konten multimedia, adanya asesmen formatif, serta fitur interaktif yang dapat meningkatkan motivasi dan pemahaman peserta didik terhadap teks novel. Platform ini juga mendukung fleksibilitas proses pembelajaran, memberikan wadah peserta didik untuk belajar secara mandiri maupun kolaboratif. Analisis data menunjukkan peningkatan signifikan dalam keterlibatan peserta didik selama proses pembelajaran berlangsung.