Results 91 to 100 of about 3,313,131 (376)

Single-hit resolution measurement with MEG II drift chamber prototypes [PDF]

, 2016
Drift chambers operated with helium-based gas mixtures represent a common solution for tracking charged particles keeping the material budget in the sensitive volume to a minimum.
Baldini, A. M., Baracchini, E., Cascella, M., Cavoto, G., Cei, F., Chiappini, M., Chiarello, G., Chiri, C., Dussoni, S., Galli, L., Grancagnolo, F., Grassi, M., Martinelli, V., Nicolò, D., Panareo, M., Pepino, A., Piredda, G., Renga, F., Ripiccini, E., Signorelli, G., Tassielli, G. F., Tenchini, F., Venturini, M., Voena, C.   +23 more
core   +2 more sources

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

Advanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal, Martin Irizar, Longfeng Huang, Mamun Sarker, Mustafa A. Ashoush, Zakaria M. Abd El‐Fattah, Johannes Barth, Frederik Schiller, Afaf El‐Sayed, Fei Gao, Dimas G. de Oteyza, Alexander Sinitskii, Aran Garcia‐Lekue, Martina Corso, Ignacio Piquero‐Zulaica   +14 more
wiley   +1 more source

Determination of density and concentration from fluorescent images of a gas flow

, 2007
A fluorescent image analysis procedure to determine the distribution of species concentration and density in a gas flow is proposed. The fluorescent emission is due to the excitation of atoms/molecules of a gas that is intercepted by an electron blade ...
AK Agrawal, BS Yildirim, D D’Ambrosio, Daniela Tordella, H Ashkenas, H Kobayashi, K Alammar, KA Bütefisch, LO Brown, M Belan, M Nishida, Marco Belan, RJ Cattolica, RJ Cattolica, Sergio De Ponte, WS Young   +15 more
core   +1 more source

The chemical evolution of Omega Centauri's progenitor system [PDF]

, 2007
Chemical evolution models are presented for the anomalous globular cluster Omega Centauri. After demonstrating that the chemical features of Omega Cen can not be reproduced in the framework of the closed-box self-enrichment scenario, we discuss a model ...
Antonio Sollima, Bedin, Bekki, Bekki, Bradamante, Brown, Carraro, Chabrier, Chuzhoy, Cohen, Cohen, Cunha, Dinescu, Dinescu, Donatella Romano, Elena Pancino, Fellhauer, Ferraro, Ferraro, Ferraro, Francesca Matteucci, Francesco R. Ferraro, François, François, Freeman, Freeman, Frinchaboy, Gnedin, Gratton, Gratton, Grevesse, Harbeck, Harris, Hilker, Hilker, Hirschi, Hughes, Icke, Ideta, Ikuta, Iwamoto, Kayser, Koch, Kroupa, Lanfranchi, Lanfranchi, Lee, Lee, Lloyd Evans, Maeder, Majewski, Mallia, Mannucci, Marco Limongi, Mateo, Matteucci, Matteucci, Matteucci, McWilliam, Merritt, Meylan, Meynet, Meynet, Meza, Michele Bellazzini, Moehler, Monica Tosi, Nomoto, Norris, Norris, Norris, Norris, Origlia, Pancino, Pancino, Pancino, Piotto, Platais, Recchi, Rey, Richer, Romano, Romano, Salpeter, Scalo, Schmidt, Smith, Smith, Smith, Sollima, Sollima, Sollima, Sollima, Stanford, Suntzeff, Talbot, Tinsley, Tolstoy, Tsuchiya, Tsujimoto, van de Ven, van den Hoek, Vanture, Woolley, Woosley, Wyse, Zinnecker   +106 more
core   +3 more sources

Observation of Topological Chirality Switching Induced Freezing of a Skyrmion Crystal

Advanced Materials, EarlyView.
Using Lorentz Transmission electron microscopy, it is shown that in the insulating van der Waals ferromagnet, CrBr3, a magnetic field can cause Bloch skyrmionic bubbles to spontaneously switch their chirality. As achiral type‐II bubbles are an intermediate state, the bubbles rapidly elongate and shrink when switching, thereby inducing a freezing of the
John Fullerton, Yue Li, Harshvardhan Solanki, Sergey Grebenchuk, Magdalena Grzeszczyk, Zhaolong Chen, Makars Šiškins, Kostya S. Novoselov, Maciej Koperski, Elton J. G. Santos, Charudatta Phatak   +10 more
wiley   +1 more source

Diffusion mechanisms of coal-measure helium and their implications for helium accumulation: A case study of the Taiyuan Formation, northern Qinshui Basin, China

Meitian dizhi yu kantan
ObjectiveThe global helium-rich gas reservoirs are dominated by conventional natural gas reservoirs. In recent years, helium-bearing natural gas has been discovered in the Carboniferous-Permian coal measures in the Ordos Basin and surrounding regions ...
Yong MA, Zhiyuan XIN, Jianfa CHEN, Yuhong LI, Xiutao ZHANG, Haojie JIANG, Zeya CHEN   +6 more
doaj   +1 more source

The impact of the carrier gas composition of non-thermal atmospheric pressure plasma jet for bacteria sterilization

AIP Advances, 2020
In this work, the bacteria inactivation using the nonthermal atmospheric pressure plasma has been studied. The bacteria inactivation was conducted using a self-design nonthermal atmospheric pressure plasma jet system.
Khaled Lotfy
doaj   +1 more source

Thermal Energy Transfer between Helium Gas and Graphene Surface According to Molecular Dynamics Simulations and the Monte Carlo Method. [PDF]

Nanomaterials (Basel), 2022
Zhang L, Ban H.
europepmc   +1 more source

Spectroscopy and Dynamics of a Two-Dimensional Electron Gas on top of Ultrathin Helium Films on Cu(111)

, 2016
Electrons in image-potential states on the surface of bulk helium represent a unique model system of a two-dimensional electron gas. Here, we investigate their properties in the extreme case of reduced film thickness: a monolayer of helium physisorbed on
Armbrust, Nico, Feulner, Peter, Güdde, Jens, Höfer, Ulrich, Kossler, Sarah   +4 more
core   +1 more source

Effect of additive oxygen gas on cellular response of lung cancer cells induced by atmospheric pressure helium plasma jet

Scientific Reports, 2014
The atmospheric pressure helium plasma jet driven by pulsed dc voltage was utilized to treat human lung cancer cells in vitro. The properties of plasma plume were adjusted by the injection type and flow rate of additive oxygen gas in atmospheric pressure
H. Joh, J. Choi, Sun Ja Kim, T. Chung, Tae-Hong Kang   +4 more
semanticscholar   +1 more source