Results 11 to 20 of about 790,255 (328)

Research and development of pulse electronic control devices with UV lamps

open access: yesРоссийский технологический журнал, 2022
Objectives. When used in lighting installations with tubular low-pressure ultraviolet (UV) lamps, electronic ballasts should meet the following basic requirements: low cost, reliable ignition at low temperatures, as well as combining high energy ...
O. Yu. Kovalenko   +2 more
doaj   +1 more source

Miniatur Sistem Pembangkit Listrik Tenaga Air Piko Hidro Sebagai Media Pembelajaran Pada Politeknik Bosowa

open access: yesPatria Artha Technological Journal, 2020
This study aims to make a miniature Pico Hydro-Hydro Power Plant (PH-HPP) system with load variations.  The research method used in this research consists of the stages (1) identification of the problem, (2) design, (3) development and (4) application ...
Irvawansyah Irvawansyah   +2 more
doaj   +1 more source

Multistage coupling water-enabled electric generator with customizable energy output

open access: yesNature Communications, 2023
Constant water circulation between land, ocean and atmosphere contains great and sustainable energy, which has been successfully employed to generate electricity by the burgeoning water-enabled electric generator.
Puying Li   +6 more
doaj   +1 more source

Penggunaan Larutan Ekstrak Etanol dari Temulawak Sebagai Fotosensitizer di Dalam Pemutihan (Pengelantangan) Pulp dengan Penyinaran Lampu

open access: yesDinamika Kerajinan dan Batik: Majalah Ilmiah, 2016
ABSTRAKEkstrak etanol dari temulawak (Curcuma Xanthorriza) dapat digunakan sebagai fotosensitiser pada pemutihan pulp dengan penyinaran lampu, dimana pada pemutihan ini menghasilkan oksigen singlet yang mendegradasi lignin di dalam pulp (delignifikasi ...
Arif Perdana
doaj   +1 more source

Implementasi Inverter Berbasis Square Wave dan Sinusoidal PWM Menggunakan Arduino Uno

open access: yesRekayasa, 2022
Inverters with square waves and sinusoidal output signal waves have different efficiency values. The difference is very visible, especially when the inverter is used to drive an electric device that uses a motor.
R Dwiki Rachwanto   +2 more
doaj   +1 more source

Evolution of OH reactivity in NO-free volatile organic compound photooxidation investigated by the fully explicit GECKO-A model [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
OH reactivity (OHR) is an important control on the oxidative capacity in the atmosphere but remains poorly constrained in many environments, such as remote, rural, and urban atmospheres, as well as laboratory experiment setups under low-NO conditions ...
Z. Peng   +11 more
doaj   +1 more source

Cerium-Oxide-Nanoparticle-Decorated Zinc Oxide with Enhanced Photocatalytic Degradation of Methyl Orange

open access: yesApplied Sciences, 2020
Cerium-oxide-nanoparticle-decorated zinc oxide was successfully prepared using a simple one-pot hydrothermal technique with different weight% Ce doping.
Chatchai Rodwihok   +5 more
doaj   +1 more source

A monolithic and flexible fluoropolymer film microreactor for organic synthesis applications [PDF]

open access: yes, 2019
A photocurable and viscous fluoropolymer with chemical stability is a highly desirable material for fabrication of microchemical devices. Lack of a reliable fabrication method, however, limits actual applications for organic reactions.
Im, DJ   +6 more
core   +1 more source

Immunity test of the lighting installation for electromagnetic surge disturbances

open access: yesITM Web of Conferences, 2018
The paper presents the results of computer simulation of the operation of a lighting installation disturbed by a voltage surge of 1.2 / 50 μs. The components included in the model of the system were: voltage surge generator (accordance with the PN-EN ...
Typańska Dorota, Machczyński Wojciech
doaj   +1 more source

Rancang Bangun Prototipe PLTPh Sebagai Listrik Penerangan Kapasitas 9 Watt

open access: yesJurnal Energi Dan Manufaktur, 2020
This study aims to realize the manufacturing of a prototype design of a pico-hydro power plant, which is expected to be a science of study and a reference for students at the University of Singaperbangsa Karawang in particular and Indonesian students in ...
Muhammad Ibrahim   +2 more
doaj   +1 more source

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