Results 71 to 80 of about 353,875 (266)

SUPPRESSION OF MOLECULAR IONS IN SECONDARY ION MASS SPECTRA

Le Journal de Physique Colloques, 1984
Improved suppression of molecular ions in SIMS spectra has been obtained using a Cameca IMS-3F ion microscope. The approach described results in the suppression of molecular ions by factors of 10-100 fold more than by classical "energy offset".
Mcintyre, N., Chauvin, W., Metson, J., Bancroft, G.   +3 more
openaire   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Enhancement of harmonic intensity by using He+ ion chain model

四川大学学报. 自然科学版, 2018
In the present paper, we propose an effective method to enhance the intensity of the harmonic spectrum by using the He+ ion chain model. Through solving the time-dependent Schrödinger equation, the harmonic spectra from the single He+ ion and the He+ ion
LIU Hang, FENG Li-Qiang
doaj  

Anisotropy of the Spectral Index in Ion Scale Compressible Turbulence: MMS Observations in the Magnetosheath

Frontiers in Physics, 2019
Turbulence in the Earth's magnetosheath at ion kinetic scales is investigated with the Magnetospheric MultiScale (MMS) spacecraft. The multi-point measurements allow the three dimensional power spectra in wave-vector space to be determined.
Owen Wyn Roberts, Yasuhito Narita, Rumi Nakamura, Zoltán Vörös, Daniel Gershman   +4 more
doaj   +1 more source

Data Processing of Product Ion Spectra: Quality Improvement by Averaging Multiple Similar Spectra of Small Molecules. [PDF]

Mass Spectrom (Tokyo), 2022
Matsuda F, Komori S, Yamada Y, Hara D, Okahashi N.   +4 more
europepmc   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Multispectroscopic Study of Single Xe Clusters Using XFEL Pulses

Applied Sciences, 2019
X-ray free-electron lasers (XFELs) deliver ultrashort coherent laser pulses in the X-ray spectral regime, enabling novel investigations into the structure of individual nanoscale samples.
Toshiyuki Nishiyama, Christoph Bostedt, Ken R. Ferguson, Christopher Hutchison, Kiyonobu Nagaya, Hironobu Fukuzawa, Koji Motomura, Shin-ichi Wada, Tsukasa Sakai, Kenji Matsunami, Kazuhiro Matsuda, Tetsuya Tachibana, Yuta Ito, Weiqing Xu, Subhendu Mondal, Takayuki Umemoto, Catalin Miron, Christophe Nicolas, Takashi Kameshima, Yasumasa Joti, Kensuke Tono, Takaki Hatsui, Makina Yabashi, Kiyoshi Ueda   +23 more
doaj   +1 more source

Formation and fragmentation of doubly and triply charged ions in the negative ion spectra of neutral N-glycans from viral and other glycoproteins. [PDF]

Anal Bioanal Chem, 2021
Harvey DJ, Struwe WB, Behrens AJ, Vasiljevic S, Crispin M.   +4 more
europepmc   +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

Characterization of Underivatized Pterins by Laser Desorption Fourier Transfonn Mass Spectrometry

Pteridines, 1993
Laser desorption FfMS provides a powerful method for examining the structures of underivatized pteridines. (M + Na)+ and (M + K)+ ions are generated by laser desorption and can be used to determine molecular weights. The negative ion spectra provide more
Jacobson K. Bruce, Hettich Robert L.
doaj   +1 more source