Results 21 to 30 of about 2,838 (263)

Pengaruh Derajat Pengapian terhadap Kinerja Motor Bakar 6 Langkah Berbahan Bakar Etanol

Rekayasa Mesin, 2020
The six-stroke spark ignition engine has the potential to be developed as a new alternative to future motor fuel technology. The development of motor vehicles will be directly proportional to the use of rising fossil fuels. It is, therefore, necessary to
Misru Razi, Eko Siswanto, Widya Wijayanti   +2 more
doaj   +1 more source

Analysis of Ignition Spark Parameters Generated by Modern Ignition System in SI Engine Fueled by Ammonia

Energies
This paper analyzes the influence of the number of ignition coils and spark discharge energy on the Coefficient of Variation of Indicated Mean Effective Pressure (COVIMEP) of an SI internal combustion piston engine.
Mariusz Chwist, Michał Gruca, Michał Pyrc, Borys Borowik   +3 more
doaj   +1 more source

Substantiation of the method for diagnosing the ignition system of automobile petrol engines by exhaust gas toxicity parameters in individual cylinders

Интеллект. Инновации. Инвестиции, 2022
It is known that the proportion of failures of the elements of the power supply system of automobile piston engines reaches 45% of all its failures, including 9% of cases are failures of the elements of the ignition system. An analysis of this statistics
А.V. Gritsenko, K. V. Glemba, G. N. Salimonenko   +2 more
doaj   +1 more source

Derivation and characterization of retinal pigment epithelium from urine‐derived iPSCs

FEBS Open Bio, EarlyView.
Age‐related macular degeneration causes vision loss via RPE dysfunction and loss. Traditional iPSC therapies rely on invasive biopsies, limiting scalability. Here, we utilize urine‐derived stem cells as an accessible source to generate u‐iPSCs, successfully differentiated into pigmented RPE. This “Urine‐to‐Retina” platform provides a promising path for
Daniella Beiner, Hainan Zhu, Carol Christine Bosholm, Heuy‐Ching Wang, Tracy Criswell, Anthony Atala, Jian‐Xing Ma, Yuanyuan Zhang   +7 more
wiley   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

A spark energy deposition model in mixture fraction space for simulations of turbulent non-premixed flame ignition

Applications in Energy and Combustion Science
Predicting the ignition probability remains important for designing reliable combustors. A spark ignition model in mixture fraction space is proposed and used in a Large Eddy Simulation (LES)-Conditional Moment Closure (CMC) simulation of initiation of a
Hazem S.A.M. Awad, Savvas Gkantonas, Epaminondas Mastorakos   +2 more
doaj   +1 more source

Spatial and time resolved determination of the vibrational temperature in ignition sparks by variation of the dwell time

SN Applied Sciences, 2020
The ignition process initiates the combustion in spark-ignition engines. Therefore, understanding the ignition process is an important aspect in developing more efficient combustion engines.
Tobias Michler, Olaf Toedter, Thomas Koch   +2 more
doaj   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

Advanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu, Qihang Lv, Lubin Liu, Zhezhe Zhou, Chentao Yan, Ao Qin, Jianting Ma, Shuhui Liang, Yue Xu, Min Hong, Bin Li, Pingan Song   +11 more
wiley   +1 more source

Flash Assembloids: A Rapid Biofabrication of a Platform for Modeling Early Glioblastoma Invasion at the Glioblastoma–Brain Organoid Interfaces

Advanced Healthcare Materials, EarlyView.
This study presents a bioengineered assembloid (ASM) system combining glioblastoma (GBM) cells in oxidized alginate (OA) microgels with dorsal organoids (DOs). This model simulates brain tumor‐host interactions, revealing enhanced GBM invasion, altered gene expression, and aggressive infiltration patterns, demonstrating ASM as a valuable platform for ...
Chao Liang, Henry Robert Howard, Shihui Chen, Won‐Young Choi, Summer Cao, Arthur Chien, Kevin Zou, Michael Kassiou, Fabien Delerue, Ho Sang Jung, Yeonju Park, Young Mee Jung, Yong‐Dae Kwon, Karrie M. Kiang, Gilberto Ka‐Kit Leung, Ryohichi Sugimura, Ann‐Na Cho, Sang Jin Lee   +17 more
wiley   +1 more source