Results 111 to 120 of about 333,485 (307)

Present status of numerical modeling of hydrogen negative ion source plasmas and its comparison with experiments: Japanese activities and their collaboration with experimental groups

New Journal of Physics, 2018
The present status of kinetic modeling of particle dynamics in hydrogen negative ion (H ^− ) source plasmas and their comparisons with experiments are reviewed and discussed with some new results.
A Hatayama, S Nishioka, K Nishida, S Mattei, J Lettry, K Miyamoto, T Shibata, M Onai, S Abe, S Fujita, S Yamada, A Fukano   +11 more
doaj   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

Electron cyclotron resonance negative ion source [PDF]

, 2000
Production and control of electron cyclotron resonance (ECR) plasmas for negative ion sources have been studied. A new production method using permanent magnets is proposed as one possibility for a large diameter high density uniform microwave plasma ...
福政, 修, Matsumori, Masanori
core  

Discharge characterization of two-region arc plasma (TRAP) ion source

Nuclear Engineering and Technology
The Korea Atomic Energy Research Institute (KAERI) is developing a novel Two-Region Arc Plasma Ion Source (TRAP) as a negative hydrogen (deuterium) ion source for a Neutral Beam Injection (NBI) system in a fusion tokamak.
Kihyun Lee, Seung Ho Jeong, Tae-Seong Kim, Dae-Sik Chang, Sung-Ryul Huh   +4 more
doaj   +1 more source

Radiofrequency and 2.45 GHz electron cyclotron resonance H− volume production ion sources

New Journal of Physics, 2016
The volume production of negative hydrogen ions ( ${{\rm{H}}}^{-}$ ) in plasma ion sources is based on dissociative electron attachment (DEA) to rovibrationally excited hydrogen molecules (H _2 ), which is a two-step process requiring both, hot electrons
O Tarvainen, S X Peng
doaj   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Negative Ion Density Distribution in a Volume Negative Ion Source - Its Dependence on Plasma Parameters [PDF]

, 2003
In a volume negative ion source, H/sup -/ ions are formed in hydrogen plasmas by dissociative attachment of slow plasma electrons to highly vibrationally excited hydrogen molecules, and these vibrational molecules are produced by energetic electron ...
Takeiri, Y., Hamabe, M., Tauchi, Y., 福政, 修, Mori, S.   +4 more
core  

Performance prediction of radio frequency based negative ion source using fusion neural network model

Nuclear Fusion
To accelerate the development of a radio frequency negative ion source (RF-NIS), a fusion neural network model has been developed to simulate and predict the performance of RF-NIS under set working parameters.
Yu Gu, Chundong Hu, Yang Li, Yuwen Yang, Yahong Xie, Qinglong Cui, Yuanzhe Zhao   +6 more
doaj   +1 more source

Beam formation in CERNs cesiated surfaces and volume H− ion sources

New Journal of Physics, 2016
At CERN, a high performance negative ion (NI) source is required for the 160 MeV H ^− linear accelerator named Linac4. The source should deliver 80 mA H ^− ion beams within an emittance of 0.25 mm·mrad.
Serhiy Mochalskyy, Jacques Lettry, Tiberiu Minea   +2 more
doaj   +1 more source

In silico and in vitro exploration of a tyrosinase for biocatalytic production of catechols

FEBS Open Bio, EarlyView.
Tyrosinase from Ralstonia pseudosolanacearum is a promising biocatalyst for producing valuable catechols from monophenol substrates. This tyrosinase is uniquely suited to this due to its high monophenolase : diphenolase ratio. We combined in silico docking and in vivo kinetic characterisation of this tyrosinase with 11 industrially relevant monophenols,
James Britton, Fang Zhao, Reeta Davis, Meg Walsh, Kevin E O'Connor, David O'Connell, Tanja Narancic   +6 more
wiley   +1 more source