نتایج جستجو برای: ion cyclotron resonance apoptosis

تعداد نتایج: 570226  

Journal: :European journal of mass spectrometry 2007
A G Marshall C L Hendrickson M R Emmett R P Rodgers G T Blakney C L Nilsson

This short review summarizes recent and projected advances in Fourier transform ion cyclotron resonance mass spectrometry instrumentation and applications, ranging from petroleomics to proteomics. More details are available from the cited primary literature and topical reviews.

Journal: :Journal of the American Society for Mass Spectrometry 2004
Bernhard Spengler

A new strategy is described for the determination of amino acid sequences of unknown peptides. Different from the well-known but often inefficient de novo sequencing approach, the new method is based on a two-step process. In the first step the amino acid composition of an unknown peptide is determined on the basis of accurate mass values of the peptide precursor ion and a small number of accur...

2010
X. J. Zhang Y. P. Zhao C. Q. Qin J. P. Qian

For designing scenarios with optimal ICRF performances in EAST tokamak plasma, the fast wave propagation and absorption should be first investigated. Here several possible Ion Cyclotron Resonance Heating (ICRH) scenarios have been explored are minority heating of hydrogen in a deuterium plasma and mode conversion heating of He in a deuterium plasma. The TORIC code has been used to simulate the ...

Journal: :The European Physical Journal A 2021

Phase-imaging ion-cyclotron-resonance technique has been implemented at the Penning-trap mass spectrometer JYFLTRAP and is routinely employed for measurements of stable short-lived nuclides produced IGISOL facility. Systematic uncertainties that impose limitations on accuracy are discussed. It was found out phase evolution radial motion ions in a Penning trap during application radio-frequency ...

Journal: :Journal of the American Chemical Society 2002
F Sedinam Amegayibor John J Nash Anna S Lee Jason Thoen Christopher J Petzold Hilkka I Kenttämaa

5,8-Didehydroisoquinolinium ion, a para benzyne analogue, was generated in a Fourier transform ion cyclotron resonance mass spectrometer, and its reactivity toward various neutral reagents was examined. A direct comparison of the reaction kinetics of the para benzyne, a meta isomer, and analogous monoradicals, indicates that the para benzyne is a poorer electrophile but a more reactive radical ...

2007
R. Scrivens

A brief introduction to electron and ion sources for particle accelerators is given. Concentrating on the basic processes for the production of these particles, thermionic and photocathode production of electrons and the processes in Penning and electron cyclotron resonance ion sources are covered. Finally, negative ions are discussed.

Journal: :Journal of the American Society for Mass Spectrometry 1993

2010
K. Hatanaka M. Fukuda M. Kibayashi S. Morinobu Nagayama H. Okamura T. Saito H. Tamura T. Yorita

The Research Center for Nuclear Physics (RCNP) cyclotron cascade system has been operated to provide high quality beams for various experiments. In order to increase the physics research opportunities, the Azimuthally Varying Field (AVF) cyclotron facility was upgraded recently. A flat-topping system and an 18-GHz superconducting Electron Cyclotron Resonance (ECR) ion source were introduced to ...

2010
K. Hatanaka M. Fukuda T. Yorita T. Saito H. Tamura M. Kibayashi S. Morinobu K. Nagayama

The Research Center for Nuclear Physics (RCNP) cyclotron cascade system has been operated to provide high quality beams for various experiments. In order to increase the physics opportunities, the Azimuthally Varying Field (AVF) cyclotron facility was upgraded recently. A flat-topping system and an 18 GHz superconducting Electron Cyclotron Resonance (ECR) ion source were introduced to improve t...

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