Results 11 to 20 of about 52,470 (317)

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

Using a stepper motor as a low-power, low-rotation DC generator for renewable energy harvesting [PDF]

open access: yesE3S Web of Conferences
Currently, the need for renewable energy is getting bigger; studying renewable energy generation requires a small-scale or miniature generator with a low rotation that can produce power for lamp loads. The selection of generators is not as appropriate as
Suwarno Djoko Untoro
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

Effect of Pulse Width Modulation on Proportional, Integral, and Derivative Coefficient Characteristics

open access: yesProtek: Jurnal Ilmiah Teknik Elektro, 2023
Based on the value of feedback obtained from the sensor (LDR), the PID algorithm uses the error value obtained from the comparison between the sensor value and the setpoint value to perform calculations so that the PWM generator will use the output value
Tonny Suhendra
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

KINERJA DAN EMISI MESIN DIESEL 1 SILINDER BERBAHAN BAKAR CAMPURAN BIODIESEL NYAMPLUNG DAN ETANOL

open access: yesRekayasa Mesin, 2023
Research has been carried out on the effect of biodiesel and ethanol fuel mixtures on diesel engine performance and emissions. Ethanol (C2H5OH) is a type of alcohol that can improve the characteristics of biodiesel.
Nasrul Ilminnafik   +3 more
doaj   +1 more source

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