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Effect of Changes Turbidity on Oxygen Solubility in Fish Pond Water Electrocoagulation Process Sutanto, Sutanto; Supriyanto, Toto; Widjajanto, Danang
Fluida Vol. 16 No. sp1 (2023): FLUIDA x IRWNS Special Edition
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16isp1.5596

Abstract

The water used for fish farming by the Mina Lestari is very dirty, because many soil particles are dissolved in water. The water with high dirty in generally has very high turbidity. So that oxygen is difficult to dissolve in water and is not sufficient for fish life. So many fish die, due to insufficient oxygen for breathing. To reduce water turbidity is treated by electrocoagulation process combined with the aeration process. The aim of the research was to study the effect of changes in turbidity on dissolved oxygen in water. The study began by measuring the turbidity using a turbidimeter and dissolved oxygen using a DO meter. Furthermore, pour 10 liters of water into the electrocoagulation process tank. The electrocoagulation was carried out at 12 volt or 0,3 ampere for 10 minutes. The process was stopped, then the water flowed into the settling tank and left for 30 minutes to precipitate of the dirt. The water flowed into a holding tank and followed aeration process by flowing air at a rate of 500 cc per minute for 30 minutes. Then followed measuring turbidity by turbidimeter and dissolved oxygen by DO meter. Subsequent studies were carried out using the same procedure with an interval of 10 minutes processing time for electrocoagulation process. The results showed that an increase in processing time can reduce water turbidity from 68 NTU to 45 NTU or 33.82% and increase dissolved oxygen from 2.8 mg/L to 5.3 mg/L or 89.29% at 50 minutes processing.
Alterasi Akibat Proses Hidrothermal di Bolaang Mongondow, Provinsi Sulawesi Utara Harjanto, Agus; Sutanto, Sutanto; Sutarto, Sutarto; Subandrio, Achmad; Suasa, I Made; Salamat, Juanito; Hartono, Gia; Saputra, Putu; Basten, I Gde; Fauzi, Muhammad; Rosdiana, Rosdiana
EKSPLORIUM Vol. 37 No. 1 (2016): MEI 2016
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2016.37.1.2666

Abstract

Bolaang Mongondow is located in central north Sulawesi arm, which is composed of Neogen magmatic arc and potentially contain economic minerals. This condition is behind the research purpose to study the mineral resources potencies. Research aim is to study alteration caused by hydrothermal process and its relation with gold (Au) deposit based on field study and laboratory analysis. Methodologies used for the research are literature study, geological survey, rocks sampling, laboratory analysis, and data processing. Research area is a multiply diorite intrusion complex. Andesite, volcaniclastic rocks, and dacite, the older rocks, were intruded by this complex. Later, dacitic tuff, volcanic sandstone, and alluvium deposited above them. There are three measured and mapped major faults heading NE-SW crossed by E-W fault and NW-SE fault lately crossed all the older faults. Early stage hydrothermal alteration related to the existence of young quartz diorite, showing alteration stage from the potassic center to distal prophyllitic. Final stage hydrothermal alteration consist of argilic, advanced argilic, and silica-clay mineral±magnetite±chlorite alteration overlapping the earlier alteration. Mineralization of Cu-Au±Ag in central part of research area or Tayap-Kinomaligan area is mostly asociated with potassic altered young quartz diorite and crossed by paralel and stockworked quartz-magnetite-chalcopyrite±bornite vein.
Gaya Kepemimpinan Kepala Sekolah Untuk Meningkatkan Disiplin Kerja Guru Di SD Negeri 39 Dan 43 Bengkulu Selatan sutanto, sutanto; Danim, Sudarwan; Putri Kartiwi, Asti
Manajer Pendididikan Vol 19 No 3 (2025): MANAJER PENDIDIKAN
Publisher : UNIVERSITAS BENGKULU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/mapen.v19i3.47447

Abstract

This study aims to describe the leadership style of school principals to improve teacher discipline, which includes the authoritarian leadership style of school principals, the democratic leadership style of school principals, and the laissez-faire leadership style of school principals to improve teacher discipline. The method used is qualitative descriptive with techniques of interviews, observations, and documentation. Data analysis was conducted using the interactive model of Miles and Huberman, which consists of data reduction, data presentation, and data verification. The research results are as follows: 1) The authoritarian leadership style of the principals of SD Negeri 39 and 43 in South Bengkulu is not used as the primary pattern but rather as a situational strategy applied when conditions demand firmness, full control, and quick decisions, especially in dealing with repeated disciplinary violations, emergency situations, or conflicts among teachers. 2) Democratic leadership style is applied by the principals at SD Negeri 39 and SDN 43 in South Bengkulu and has proven effective in improving teacher discipline while fostering a collaborative work culture. This leadership style is demonstrated through open communication, active teacher participation in policy formulation, and decision-making based on consensus. 3) The laissez-faire leadership style of the principals at SDN 39 Bengkulu Selatan and SDN 43 Bengkulu Selatan is implemented selectively and adaptively in accordance with the conditions of the teachers and the needs of the school. This leadership style is considered effective when applied to teachers who possess high professionalism, discipline, and independence.
Tanggung Jawab Direksi (Pengurus) Badan Usaha Milik Negara Dengan Menggunakan Asas-Asas Business Judgement Rule Dalam Pertanggungjawaban Pidana Sutanto, Sutanto
Disiplin : Majalah Civitas Akademika Sekolah Tinggi Ilmu Hukum sumpah Pemuda Vol. 31 No. 4 (2025)
Publisher : Sekolah Tinggi Ilmu Hukum sumpah Pemuda

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

Abstract

State-Owned Enterprises (SOEs) are a form of business entity or legal entity established by the government to realise the welfare of the Indonesian people in accordance with the mandate of the 1945 Constitution. In the management and implementation of their business activities, SOEs in the form of limited liability companies have their own unique characteristics when compared to private limited liability companies, because these SOEs are also regulated separately by Law No. 19 of 2003 concerning State-Owned Enterprises, in addition to being regulated by Law No. 40 of 2007 concerning Limited Liability Companies. The background and considerations for the enactment of Law No. 19 of 2003 on State-Owned Enterprises include the fact that SOEs are one of the economic actors in the national economy based on economic democracy, playing an important role in the management of the national economy to achieve public welfare, whereas the implementation of the role of SOEs in the national economy to achieve public welfare has not been optimal. Therefore, management and supervision must be carried out professionally. In the management and supervision of SOEs, many directors (managers) of SOEs have been involved in special criminal cases due to errors or negligence in implementing the Business Judgment Rule. Moreover, currently there are not many references or jurisprudence that can save SOE directors if they are suspected of corruption, including the condition of government regulations that do not specifically regulate the application of the Business Judgment Rule.
Implementasi Sistem Informasi Manajemen Gudang (Warehouse Management System) pada PT. Singa Mas Indonesia Sutanto, Sutanto; Wahidudin, Wahidudin
Smart Comp :Jurnalnya Orang Pintar Komputer Vol 12, No 3 (2023): Smart Comp: Jurnalnya Orang Pintar Komputer
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/smartcomp.v12i3.3820

Abstract

So far the process of storing the goods in the warehouse has not been properly installed so that data errors often occur, and it is very impeding a job. The problem of workers or employees in the company is difficult if at any time if there is a data fault,   not only that the supply of goods in the warehouse such as stock and placement of goods has not been well-monitoring and detent. OBecause the author raises this problem in order to be able to solve the problem in order to form an effective and efficient system   then the best solution is to be made a system of information technology that is able to solve the problem,  the system that will be designed later is a warehousing information system capable of monitoring stock of goods, the placement of an item, as well as the availability of information about the features of goods inserted into the warehouse, the programming language that will be used to create its system is  Page Hypertext preprocessor  (PHP)  and  MySQL as its databaseandsystem development using  waterfallmethod.
PENGARUH MODEL PEMBELAJARAN CORE (Connecting, Organizing, Reflecting, Extending) TERHADAP PEMECAHAN BARIS DAN DERET MATEMATIKA Hidayati, Nur; Sutanto, Sutanto
Jurnal Ilmiah Sains dan Teknologi Vol. 2 No. 1 (2018): Vol. 2 No. 1 Februari 2018
Publisher : Teknik Informatika Fakultas Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6409.59 KB)

Abstract

Main purpose of the studied was carried – out on 1. Improving the academic – value on Mathematics-problem and 2. Increasing speed learning-value of Mathematics-problems through technical CORE-Model. Total experiment sample of the studied consist of 20 person pupils respectively, was apply with 1st stage to training and guidance 2nd stage was conditioning environment and 3thstage was experiment-periode, neverthelese each stage consist of 10 days. Date were analised by two-ways classification without interaction. Result of the studied informs as follows: 1. Highly significance (0,1%) difference on improving of academic-value of Matematics-problems between CORE-Model with conventional-learning technics respectively 2. Highly significance (0,1%) difference on speed-learning of Matematics-problems between CORE-Model with conventional-learning technics respectively.
Co-Authors Achmad Rodhi Achmad Subandrio, Achmad Ade Heri Mulyati, Ade Heri Ade Susanti Adeldarma Hikmatullah, Abdillah Adhitama, Ria Puan Adi Nugroho, Khoiruddin Adzakie, Haabi Luckmanoor Agus Darmuki Agus Harjanto Albar, Luthfirmansyah Ali Manshur Alip Sugianto, Alip Amelia, Cynthia Rizky Ananda Putra, Fajar Andreas N, Djoko Annisa Annisa Antoni Wibowo Apriyanti, Mahyuni Arief, Budi Aritonang, Erikson Vri Anugrah Azijah, Izattul Baharum, Aslina Bambang Pramudya Bina Lohita Sari Budiyono Budiyono Cahya, Afif Nur Cendriono, Nanang Christopher, James Christy, Alexander Yonathan Danang Widjajanto Daryono, Sapto Kis Devita Widyaningtyas Yogyanti Dewi Nur Anisa, Shopia Dewi Retno Sari Saputro Dewi Retno Sari Saputro, Dewi Retno Dismas Suparmo Dwi Indriani Dwi Iswahyuni Dwi Purnama Dwiyana, Amelia Eka Herlina Eka Intan Kumala Putri Eko Teguh Paripurno Erik Aditia Ismaya Evinna Cinda H F. Harsono, Cecilia Faozi, Aditya Zaenalfi Farida Nuraeni Fathurrachman, Muhammad Fathurrachman, Muhammad Galih Setiawan Nurohim Gomes, Nazario Guntur S, Guntur Handayani, Rr. Sri Harefa, Faonaso Harsono, Cecilia F Hartono, Gia Harun Al Rasyid Helta Anggia Henny Nuraeny Heri, Ade Heribertus Ary Setyadi Herman Fikri, Herman Hermawan, Ujang Heru Sigit Purwanto Hutabarat, David Hotman I Gde Basten, I Gde Imam Ghozali Irvan Wiradinata Iryani, Ani Iryani, Ani J., Tania Jordy Kantona, Emmanuel Kartiwi, Asti Putri Khomariah, Nurul Kusuma, Rima Oktavia Kusumastuti, Sri Lestari latifah K Darusman Lestari, Arifah Mufidah Linda Jati Kusumawardani Listianti, Elisa M. Yogi Riyantama Isjoni Made Suandika Maharani, Restu Dewinta Marsudi Utoyo Melianus Salakory, Melianus Mohammad Kanzunnudin Muhammad Fathurrahman Muhammad Irfan Muhammad Rizki Saputra, Muhammad Rizki Mutadin, Ali Navalino, Djoko A Nila Sari, Fadhila Ni’am, Dafi’ Ichsani Aysar Nor Hayati, Saropa Nughthoh Arfawi Kurdhi, Nughthoh Arfawi Nugroho Arif Sudibyo Nur Hidayati Nurani Nurani Nurulia Susanti, Nurulia Palupi, Mustika Pandini, Sapitri Pertiwi, Aditya Endah Pradina, Sisca Chandra Prasetyadi, Carolus Prianggono, Margahayu Purnami Widyaningsih Putera Khano, Muhammad Nazhif Abda Qoonita, Najihah Raharjo, Ronal Ramadhan, Farid Ririn Setiyowati Riyantini, Atik Rizkita, Nabiella Zahra Rosadi rosadi Rosdiana Rosdiana Rosmaiyadi S. Anwar Sabdono, Wilis Aji Salamat, Juanito SANTOSO SANTOSO Saputra, Putu Sari, Angela Bayu Pertama Septiningsih, Riana Setiyowati, Ririn Shobri, Taufiq Sidiq, Krisna Siti Fatimah Siti Warnasih Soesilo, Joko Soeyoko Soeyoko Sri Rejeki Sri Surachmi W Sri Widodo Suasa, I Made Sudarwan Danim Sugeng Juwono Mardihusodo Suhermanto, Suhermanto Sukresna, Yobi Susanto, Amin Sutanto Sutarto Sutarto Sutoyo, Muhammad Rayhan Suyud Warno Utomo Syafii, Muhammad Lukman Tamri, Tamri Teti Syahrulyati, Teti Toto Supriyanto Tri Aminingsih Trianingtyas, Laela Ufianah, Ufianah Uswatun Hasanah, Laili Wahidudin, Wahidudin Wawan Nugroho Wawan Shokib Rondli Winaro, Bowo Wiyati, Indar Yulian Syahputri Yusgiantoro, Purnomo Zahra, Mutiara Zuhri, Moh Sayful