Results 121 to 130 of about 262,234 (167)

Ion-implanted graphitic carbons

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1989
Abstract Ion implantation of glassy carbon and other graphitic forms of carbon leads to significantly increased resistance to wear. The effect is observed for a variety of ion species. Nitrogen ion doses as low as 5 × 10 15 ions/cm 2 at 50 keV are effective and the enhancement is related to the damage produced by the incident ions. New and previous
M.J. Kenny, J.T.A. Pollock, L.S. Wielunski   +2 more
openaire   +1 more source

L'hadronthérapie: les ions carbone

Bulletin du Cancer, 2010
Carbon ion therapy is an innovative radiation therapy. It has been first proposed in the forties by Robert Wilson, however the first dedicated centres for human care have been build up only recently in Japan and Germany. The interest of carbon ion is twofold: 1) the very sharp targeting of the tumour with the so called spread out Bragg peak that ...
Pascal Pommier, Yi Hu, Marie-Hélène Baron, Olivier Chapet, Jacques Balosso   +4 more
openaire   +1 more source

Ions and carbon nanostructures

Radiation Effects and Defects in Solids, 2013
First experiments on swift ion irradiation of highly oriented pyrolythic graphite led to formation of carbon nanotubes (CNT) at the cascade eruption points. CNT length was in the micron range, which corresponded to an explosive crystallization of the carbon plume with about sound velocity.
Gyulai, József, Tapasztó, Levente, Horváth, Zsolt Endre, Nemes Incze, Péter, Osváth, Zoltán, Biró, László Péter   +5 more
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Cleaving carbon-carbon bonds in cyclopropenium ions

Journal of the American Chemical Society, 1980
A cyclopropenium ion breaking one of its carbon-carbon bonds furnishes an orbital template which can be exploited by sundry mononuclear and binuclear transition metal fragments.
Eluvathingal D. Jemmis, Roald Hoffmann
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Li-Ion Capacitors Using Carbon-Carbon Electrodes

ECS Meeting Abstracts, 2012
Abstract not Available.
Wanjun Cao, Jim P. Zheng
openaire   +1 more source

Compact Carbon Ion Linac

2017
Proceedings of the North American Particle Accelerator Conf., NAPAC2016, Chicago, IL ...
Ostroumov, Peter, Faillace, Luigi, Goel, Aditya, Kutsaev, Sergey, Mustapha, Brahim, Nassiri, Ali, Plastun, Alexander, Savin, Evgeny   +7 more
openaire   +1 more source

Carbon Electrodes for K-Ion Batteries

Journal of the American Chemical Society, 2015
We for the first time report electrochemical potassium insertion in graphite in a nonaqueous electrolyte, which can exhibit a high reversible capacity of 273 mAh/g. Ex situ XRD studies confirm that KC36, KC24, and KC8 sequentially form upon potassiation, whereas depotassiation recovers graphite through phase transformations in an opposite sequence ...
Zelang, Jian, Wei, Luo, Xiulei, Ji
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Clinical Indications for Carbon Ion Radiotherapy

Clinical Oncology, 2018
Compared with photon and proton therapy, carbon ion radiotherapy (CIRT) offers potentially superior dose distributions, which may permit dose escalation with the potential for improved sparing of adjacent normal tissues. CIRT has increased biological effectiveness leading to increased tumour killing compared with other radiation modalities.
Mohamad, O., Yamada, S., Durante, M.
openaire   +3 more sources

Microdosimetry of proton and carbon ions

Medical Physics, 2014
Purpose:To investigate microdosimetry properties of 160 MeV/u protons and 290 MeV/u12C ion beams in small volumes of diameters 10–100 nm.Methods:Energy distributions of primary particles and nuclear fragments in the beams were calculated from simulations with the general purpose code SHIELD‐HIT, while energy depositions by monoenergetic ions in ...
Thiansin, Liamsuwan, Martha, Hultqvist, Lennart, Lindborg, Shuzo, Uehara, Hooshang, Nikjoo   +4 more
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Metal Ion Function in Carbonic Anhydrase

Angewandte Chemie International Edition in English, 1972
AbstractThe purpose of this review is to present an up‐to‐date account of the chemistry of the metal ion in the enzyme carbonic anhydrase. The interest lies in how the study of the metal may lead to deductions concerning the chemistry of the enzyme's action and in the way that metalloenzyme chemistry seems to demand a new appraisal of some aspects of ...
R H, Prince, P R, Woolley
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