Results 61 to 70 of about 1,381,203 (296)

An overview of negative hydrogen ion sources for accelerators

New Journal of Physics, 2018
An overview of high current (>1 mA) negative hydrogen ion (H ^– ) sources that are currently used on particle accelerators. The current understanding of how H ^– ions are produced is summarised. Issues relating to caesium usage are explored.
Dan Faircloth, Scott Lawrie
doaj   +1 more source

Note: Development of ESS Bilbao's proton ion source: Ion Source Hydrogen Positive

Review of Scientific Instruments, 2014
The Ion Source Hydrogen positive is a 2.7 GHz off-resonance microwave discharge ion source. It uses four coils to generate an axial magnetic field in the plasma chamber around 0.1 T that exceeds the ECR resonance field. A new magnetic system was designed as a combination of the four coils and soft iron in order to increase the reliability of the source.
Miracoli, Rosalba, Feuchtwanger Morales, Jorge, Arredondo López de Gereñu, Iñigo, Belver, Daniel, González, P., Corres Ochoa De Olano, Francisco Javier, Djekic, Slobodan, Echevarria, Pablo, Eguiraun, Mikel, Garmendia, Nagore, Muguira Urtubi, Leire   +10 more
openaire   +3 more sources

Interferometric measurement of resonance transition wavelengths in C IV, Si IV, Al III, Al II, and Si II [PDF]

, 2000
We have made the first interferomeric measurements of the wavelengths of the important ultraviolet diagnostic lines in the spectra \ion{C}{4} near 155 nm and \ion{Si}{4} near 139 nm with a vacuum ultraviolet Fourier transform spectrometer and high ...
Heise C., Kaufman V., Learner R. C. M., Learner R. C. M., Martin W. C., Martin W. C., Nave G., Rainer Kling, Ulf Griesmann   +8 more
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Dual targeting of RET and SRC synergizes in RET fusion‐positive cancer cells

Molecular Oncology, EarlyView.
Despite the strong activity of selective RET tyrosine kinase inhibitors (TKIs), resistance of RET fusion‐positive (RET+) lung cancer and thyroid cancer frequently occurs and is mainly driven by RET‐independent bypass mechanisms. Son et al. show that SRC TKIs significantly inhibit PAK and AKT survival signaling and enhance the efficacy of RET TKIs in ...
Juhyeon Son, Lily L. Remsing Rix, Bin Fang, Eric A. Welsh, Nicole V. Bremer, Valentina Foglizzo, Paola Roa, Nickole Sigcha‐Coello, Yi Liao, Eric B. Haura, Alexander Drilon, John M. Koomen, Emiliano Cocco, Uwe Rix   +13 more
wiley   +1 more source

Broadband, unpolarized repumping and clearout light sources for Sr$^+$ single-ion clocks

, 2015
Future transportable optical clocks require compact and reliable light sources. Here, broadband, unpolarized repumper and state clearout sources for Sr+ single-ion optical clocks are reported. These turn-key devices require no frequency stabilization nor
Dubé, P., Fordell, T., Lindvall, T., Madej, A. A., Merimaa, M., Wallin, A. E.   +5 more
core   +1 more source

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

Molecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak, Karolina Pytlak, Sandra Jaworowska, Bogusz Kulawiak, Piotr Bednarczyk   +4 more
wiley   +1 more source

Ion mobility spectrometry: history, characteristics and applications

Revista U.D.C.A Actualidad & Divulgación Científica, 2012
Ion mobility spectrometry (IMS) is an analytical technique that separates ions in the gas phase. Ions are separated at atmospheric pressure under the influence of an electric field, according to their size and shape.
Roberto Fernández Maestre
doaj   +1 more source

Simulations of charge-breeding processes in ECRIS

, 2017
Charge-breeding processes in Electron Cyclotron Resonance Ion Sources are numerically simulated by using the target helium plasma parameters obtained with NAM-ECRIS code.
Bogomolov, S., Bondarchenko, A., Efremov, A., Loginov, V., Mironov, V.   +4 more
core   +1 more source

Imaging of Sources in Heavy-Ion Reactions [PDF]

, 1997
Imaging of sources from data within the intensity interferometry is discussed. In the two-pion case, the relative pion source function may be determined through the Fourier transformation of the correlation function.
Armstrong, Baym, Bertsch, Boal, Buscher, Danielewicz, Danielewicz, David A. Brown, Gong, Gong, Kim, Kämpfer, Miśkowiec, Mrówczyński, Paweł Danielewicz, Pratt, Press, Stoks   +17 more
core   +3 more sources