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All Journal Jurnal Fitopatologi Indonesia Buletin Sumber Daya Geologi Best : Journal of Applied Electrical, Science and Technology Rhizobia Langit Biru: Jurnal Ilmiah Aviasi
Widodo
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Medicine & Pharmacology Physics Transportation

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DESIGN OF TOTAL DISSOLVE SOLID (TDS) MEASURING USING CONDUCTIVITY SENSOR AND TEMPERATURE SENSOR DS18B20 Widodo; Stiyawan, Eko Agus
BEST Vol 2 No 1 (2020): BEST
Publisher : Program Studi Teknik Elektro Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/best.vol2.no1.2583

Abstract

TDS meter is a measure of the conductivity of solutes in liquids, this tool is often used as an important component in determining water quality before use. There are still several components to be examined beside TDS, one of which is temperature. Temperature is an important component to measure the feasibility of water. Temperature measuring devices can be used to find out how much the temperature of the liquid being measured. The TDS meter that is already in the general public can only be used to find out the TDS. So, if people want to measure other components such as temperature, a thermometer is needed to measure it, of course this becomes inefficient and requires a higher cost because if you want to measure other components, the public must buy another measuring instrument. Therefore, on this occasion to make measurement tools become more efficient, the writer will design a measuring instrument that can be used to measure 2 components at once, namely a TDS meter and a thermometer designed in one device. TDS meter uses a conductivity sensor and a thermometer uses a DS18B20 waterproof temperature sensor.
IMPLEMENTATION OF MAXIMUM POWER POINT TRACKING TWO AXIS ON PHOTOVOLTAIC BASED ON ARDUINO UNO Widodo; Ardiansyah, Luky
BEST Vol 2 No 2 (2020): BEST
Publisher : Program Studi Teknik Elektro Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/best.vol2.no2.3469

Abstract

The photovoltaic system is a renewable energy source that utilizes solar energy and converts it into direct current (DC) electrical energy as an alternative energy to replace fossil fuels which will run out over time because it cannot be renewed quickly. In the design of the Maximum Power Point Tracking Two Axis On Photovoltaic Based on Arduino Uno intends to get a solar panel system that can work automatically following the maximum point of sunlight. The LDR (Light Dependent Resisitor) sensor functions to provide analog signals to Arduino Uno which Arduino Uno then processed as a basis for decision making to move the steper motor in changing the position of the solar panel so that it can get maximum sun exposure
Temperature Control System on Aquascape using On-Off Control Widodo; Setiawan, Rudi
BEST Vol 3 No 1 (2021): BEST
Publisher : Program Studi Teknik Elektro Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/best.vol3.no1.3541

Abstract

Every human being has a feeling of saturation in carrying out his daily activities. There are many ways you can do to get rid of boredom, one of which is by doing hobbies that we like. Currently there are many hobbies that can be done, one of which is a hobby of decorating an aquarium (Aquascape) by using stones, wood, sand and using water plants. Which is starting to be of interest to various circles of society. For Aquascape owners, sometimes their daily activities are busy. In fact, these other activities can take up to days. The solution to the problem of fan negligence when maintaining the Aquascape is to build an aquarium system that can adjust the lighting periodically as needed, stabilizing the water temperature in the aquarium
PENGARUH PELAKUAN DOSIS PUPUK FOSFAT DAN KONSENTRASI AIR KOLAM IKAN LELE TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN KACANG MERAH (Vigna angularis): THE EFFECT OF PHOSPHATE FERTILIZER DOSAGE AND WATER CONCENTRATION OF LELE FISH ON THE GROWTH AND PRODUCTION OF RED BEANS (Vigna angularis) Purba, Rosmadelina; Rosalyne, Irawaty; Widodo
Jurnal Ilmiah Rhizobia Vol 1 No 2 (2019): Jurnal Ilmiah Rhizobia Edisi Agustus 2019
Publisher : Prodi Agroteknologi Fakultas Pertanian Universitas Simalungun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36985/rhizobia.v8i2.79

Abstract

Penelitian ini berjudul “ Pengaruh Perlakuan Dosis Pupuk Posfat dan Konsentrasi Air Kolam Ikan Lele Terhadap Pertumbuhan dan Produksi Tanaman Kacang Merah (Vigna angularis) Penelitian dimulai bulan Juli sampai bulan Oktober 2018. Dilaksanakan di Desa Sugarang Bayu, Kecamatan Bandar, Kabupaten Simalungun dengan ketinggian ± 200 meter dpl. Tujuan penelitian adalah untuk mengetahui pengaruh pemberian pupuk fosfat dan konsentrasi air kolam ikan lele serta interaksi kedua perlakuan terhadap pertumbuhan dan produksi tanaman kacang merah. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) Faktorial dengan dua faktor perlakuan yaitu Faktor pertama: Perlakuan dosis pupuk Posfat terdiri dari 3 taraf yaitu : (P1 = 4,5g/tanaman),(P2 = 6,7g/tanaman)dan (P3 = 8,9g/tanaman). Faktor Kedua: Konsentrasi air kolam ikan lele terdiri dari 3 taraf yaitu : (I0 = 0%),(I1 = 100%),dan : (I2 = 50%)Hasil penelitian menunjukkan bahwa perlakuan dosis pupuk Posfat berpengaruh nyata terhadap tinggi tanaman, jumlah cabang, produksi per tanaman dan produksi per plot. Perlakuan Posfat P2, menghasilkan tanaman tertinggi umur 3, 5 dan 7 MST masing-masing (16,69 cm), (39,38 cm), dan (49,75 cm), jumlah cabang terbanyak yaitu (7,24), jumlah polong terbanyak ( 13,63 buah) berat polong tertinggi (32,71 g). Perlakuan P3 menunjukkan berat biji tertinggi (10,65 g) dan produksi per plot tertinggi (1,90 kg). Konsentrasi air kolam ikan lele I2, menghasilkan tanaman tertinggi umur 5 dan 7 MST masing-masing (38,74 cm) dan (49,58 cm), jumlah polong tertinggi (12,93 buah), Konsentrasi I1 menunjukkan jumlah cabang tertinggi yaitu (7,71 buah), berat biji tertinggi (10,96 g) dan produksi per plot tertinggi (1,67 kg).Interaksi pemberian dosis pupuk Posfat dan konsentrasi air kolam ikan lele berpengaruh tidak nyata terhadap tinggi tanaman, jumlah cabang, jumlah polong, berat polong, dan berat biji tetapi berpengaruh nyata pada produksi per plot. Interaksi P3I2 menghasilkan tanaman tertinggi umur 3 MST yaitu (17,25 cm) dan produksi per plot tertinggi (2,18 kg). Interaksi P2I2 menghasilkan tanaman tertinggi umur 5 dan 7 MST yaitu, (40,23 cm) dan (50,70 cm), jumlah polong terbanyak yaitu (14,53 buah). Interaksi P2I1 menghasilkan jumlah cabang terbanyak yaitu (8,13 buah), bobot polong tertinggi yaitu (41,00g), dan bobot biji per sempel tertinggi yaitu (12,20 g).
Metode Single Image-NDVI untuk Deteksi Dini Gejala Mosaik pada Capsicum annuum Asmar Hasan; Widodo; Kikin Hamzah Mutaqin; Muhammad Taufik; Sri Hendrastuti Hidayat
Jurnal Fitopatologi Indonesia Vol 17 No 1 (2021)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.17.1.9-18

Abstract

Mosaik adalah gejala penyakit yang sering ditemukan pada tanaman cabai merah (Capsicum annuum) dan umumnya disebabkan oleh infeksi virus seperti Tobacco mosaic virus. Infeksi yang berat bahkan dapat mengakibatkan tanaman menjadi kerdil dan mengalami kehilangan hasil yang nyata. Metode serologi dan molekuler sudah banyak digunakan untuk mendeteksi virus tetapi pengerjaannya cukup menyita waktu, relatif kurang efisien untuk sampel yang banyak, dan bersifat destruktif pada tanaman. Di sisi lain, pengamatan gejala secara langsung terkendala oleh kemampuan visual manusia dan gejala laten pada tahap awal infeksi. Oleh karena itu, metode deteksi berdasarkan kemampuan tanaman menyerap dan merefleksikan berbagai spektrum cahaya matahari, seperti normalized difference vegetation index (NDVI) berpotensi untuk dikembangkan. Penelitian ini bertujuan untuk mengevaluasi potensi single image-NDVI sebagai varian NDVI untuk pengembangan deteksi dini gejala mosaik pada cabai merah. Tahapan utama penelitian ialah perekaman citra tanaman cabai merah yang tidak diinokulasi virus (V0), diinokulasi (V1), dan minim hara (M) menggunakan kamera RGB tanpa modifikasi dan filter lensa untuk menangkap reflektansi cahaya biru dan Near-Infrared. Selanjutnya dilakukan pengolahan citra menggunakan plugin Photo Monitoring pada aplikasi Fiji-ImageJ. Perekaman dilakukan mulai 1 hari setelah inokulasi (HSI) sampai gejala terlihat kasat mata. Hasil penelitian menunjukkan bahwa terjadi tendensi peningkatan nilai NDVI terintegrasi pada semua perlakuan. Namun, tendensi peningkatan pada V1 tidak nyata dibandingkan dengan V0 dan M. Selisih rata-rata nilai NDVI terintegrasi antara V1 terlihat sangat nyata dibandingkan dengan V0 (pada 5 HSI) dan M (pada 1 HSI). Tingkat sensitivitas, spesifisitas, dan akurasi metode ini berkisar antara 80–90 % pada 5 HSI.
Iot-Based Smart Trash Monitoring Using Blynk Application Widodo; Ali Nur Rifky
BEST Vol 3 No 2 (2021): BEST
Publisher : Program Studi Teknik Elektro Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/best.vol3.no2.4266

Abstract

Poor waste management and lack of public awareness of environmental hygiene, especially if waste is disposed of in the local trash can, causes garbage to accumulate and emit bad odors which can be a source of disease transmission. The lack of information technology for waste management by janitors can cause slow waste disposal. Based on these problems, it is necessary to equip an automatic trash can with a monitoring function in real time. Added the IOT (Internet of Things) function, which can provide initial information indicating that the trash can is full and can be quickly picked up by the garbage collector. The smart trash can prototype uses an ESP 32 microcontroller as a system control. Servo to control the trash can cover. The output of DF Player is in the form of thanks to people who throw garbage in its place. Ultrasonic sensors can detect human presence and waste volume and send monitoring results in real time as well as notifications to the blynk application as a notification if the trash can is full.
STUDI POTENSI TERBENTUKNYA CEBAKAN MINERAL RADIOAKTIF PADA BATUAN GRANITIK DI PULAU SULAWESI: THE STUDY ON THE POTENTIAL OF RADIOACTIVE MINERAL DEPOSITS FORMATION IN GRANITIC ROCKS IN SULAWESI ISLAND Ngadenin; Widodo; Fauzi, Rachman; Pratiwi, Fadiah
Buletin Sumber Daya Geologi Vol. 16 No. 3 (2021): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v16i3.331

Abstract

In the Island of Sulawesi, there are many granitic rocks which have potential for containing radioactive mineral deposits. The purpose of this study is to determine the type of radioactive mineral deposits based on radioactivity, uranium grade, and mineralogy characteristics of certain granitic rocks. The data used comprise radioactivity measurement, uranium content, megascopic and petrographic observations of rocks, and grain analysis of heavy mineral of granitic rocks from uranium exploration on the island of Sulawesi. The granitic rocks consist of granite, biotite granite, granodiorite, biotite granodiorite, hornblenda granodiorite, hornblenda biotite granodiorite, biotite hornblenda granodiorite, biotite adamelite, hornblenda biotite adamelite, biotite hornblenda diorite, diorite, biotite hornblenda diorite and syenite. The radioactivity of granitic rocks is 50 to 1,200 c/s and uranium content is 0.54 to 36 ppm. Radioactive minerals found in granitic rocks consist of zircon, monazite, alanite, thorite, and branerite. The potential occurrence of radioactive mineral deposits on the island of Sulawesi are placer-type thorium deposits at the modern deltas and coasts.
Rancangan VFR Route Yang Menghubungkan Bandar Udara Tjilik Riwut Menuju Bandar Udara Syamsudin Noor Hana Agita Mardiana; Lina Rosmayanti; Widodo; Elvi Amir
Langit Biru: Jurnal Ilmiah Aviasi Vol 14 No 03 (2021): Langit Biru: Jurnal Ilmiah Aviasi
Publisher : Politeknik Penerbangan Indonesia Curug

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54147/langitbiru.v14i03.495

Abstract

This study aims to find out the problems that occur related toflight a VFR from Palangkaraya towards Banjarmasin or otherwise fly direct result of the unavailability of VFR Route between tjilik riwut airport to airport Syamsudin Noor as well as the draft VFR Route as solutions to these problems. The research method used is level one research and development methods with data collection techniques in the form of interviews, literature studies and documentation studies. Data processing techniques use data reduction, data presentation, verification and use reference materials.
Co-Authors Ali Nur Rifky Ardiansyah, Luky Asmar Hasan Elvi Amir Fauzi, Rachman Hana Agita Mardiana Kikin H Mutaqin Lina Rosmayanti Ngadenin Pratiwi, Fadiah Purba, Rosmadelina ROSALYNE, IRAWATY Rudi Setiawan SRI HENDRASTUTI HIDAYAT Stiyawan, Eko Agus