Results 301 to 310 of about 840,010 (348)

Carbonic Acid Eluent Ion Chromatography

Analytical Chemistry, 2019
Alkali metals, amines and alkanolamines are separated on a poly(butadiene)-maleic acid on silica stationary phase using a carbonic acid (H2CO3*) eluent with and without a mineral acid. The H2CO3* eluent is prepared in situ by high pressure permeative introduction of gaseous CO2 through thin membranes supported upon a porous steel disk.
Phitchan Sricharoen, Nunticha Limchoowong, Charles Phillip Shelor, Purnendu K. Dasgupta   +3 more
openaire   +2 more sources

Neoplastic Transformation Induced by Carbon Ions

International Journal of Radiation Oncology*Biology*Physics, 2009
The objective of this experiment was to compare the oncogenic potential of carbon ion beams and conventional photon beams for use in radiotherapy.The HeLa X human skin fibroblast cell line CGL1 was irradiated with carbon ions of three different energies (270, 100, and 11.4 MeV/u). Inactivation and transformation data were compared with those for 15 MeV
D. Bettega, P. Calzolari, P. Hessel, C. Stucchi, W. K. Weyrather   +4 more
openaire   +3 more sources

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +2 more sources

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