Results 41 to 50 of about 791,939 (337)

Polaritonic modes in a dense cloud of atoms

, 2015
We analyze resonant light scattering by an atomic cloud in a regime where near-field interactions between scatterers cannot be neglected. We first use a microscopic approach and calculate numerically the eigenmodes of the cloud for many different ...
Browaeys, Antoine, Greffet, Jean-Jacques, Hugonin, Jean-Paul, Jennewein, Stephan, Sauvan, Christophe, Schilder, Nick, Sortais, Yvan   +6 more
core   +3 more sources

Effective grain surface area in the formation of molecular hydrogen in interstellar clouds

, 2006
In the interstellar clouds, molecular hydrogens are formed from atomic hydrogen on grain surfaces. An atomic hydrogen hops around till it finds another one with which it combines.
A. Das, Acharyya, Acharyya, Biham, Cazaux, Cazaux, Hollenbach, K. Acharyya, Katz, Pirronello, Rae, S. Chakrabarti, S. K. Chakrabarti, Takahashi, Toniazzo   +14 more
core   +1 more source

Universality of the EMC Effect

, 2005
Using effective field theory, we investigate nuclear modification of nucleon parton distributions (for example, the EMC effect). We show that the universality of the shape distortion in nuclear parton distributions (the factorisation of the Bjorken x and
Arndt, Arneodo, Aubert, Beane, Beane, Beane, Bedaque, Belitsky, Chen, Chen, Chen, Chen, Chen, Cloet, Date, Detmold, Detmold, Detmold, Detmold, Detmold, Detmold, Diehl, Drakoulakos, Frankfurt, Geesaman, Gomez, Göckeler, Ji, Jiunn-Wei Chen, Kaplan, Kaplan, Kaplan, Kubodera, Kubodera, Luke, Lüscher, Meissner, Norton, Peng, Piller, Rinat, Saito, Smith, Smith, West, William Detmold   +45 more
core   +1 more source

Joint Sparsity Recovery for Spectral Compressed Sensing [PDF]

, 2014
Compressed Sensing (CS) is an effective approach to reduce the required number of samples for reconstructing a sparse signal in an a priori basis, but may suffer severely from the issue of basis mismatch.
Chi, Yuejie
core   +1 more source

Determination of Effective Atomic Number of Rubber [PDF]

, 1983
This paper reports a simple technique to determine the effective atomic number of rubber materials. The gamma ray attenuation coefficient of rubber was measured with high energy resolution Si(Li) detector at low gamma ray energies and the effective ...
Ahmad, Anuar, Saion, Elias, Sulaiman, Zainal Abidin, Wagiran, Husin   +3 more
core  

A benign, low Z electron capture agent for negative ion TPCs [PDF]

, 2009
We have identified nitromethane (CH$_3$NO$_2$) as an effective electron capture agent for negative ion TPCs (NITPCs). We present drift velocity and longitudinal diffusion measurements for negative ion gas mixtures using nitromethane as the capture ...
Barton, D., Black, J. K., Dion, M. P., Hosack, M., Martoff, C. J.   +4 more
core   +3 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

DETERMINATION OF RADIATION SHIELDING PARAMETERS OF COCRFENITIALX ALLOYS BY USING RECENTLY DEVELOPED PHY-X/PSD AND EPIXS SOFTWARES

Journal of Amasya University the Institute of Sciences and Technology, 2022
We calculate the radiation shielding parameters of CoCrFeNiTiAlx alloys which consist of mass attenuation coefficient, linear attenuation coefficient, mean free path, half-value layer, total atomic cross section, effective atomic number and effective ...
Nurettin Arpac, Murat Aygun
doaj   +1 more source

Direct reconstruction of the effective atomic number of materials by the method of multi-energy radiography

, 2003
A direct method is proposed for reconstruction of the effective atomic number by means of multi-energy radiography of the material. The accuracy of the method is up to 95% . Advantages over conventional radiographic methods, which ensure accuracy of just
Alvarez, Barnes, Cloetens, Coenen, Craig F Smith, Feldkamp, Gog, Grodzins, Harrison, Inanc, Marziani, Rizescu, Robert-Coutant, Sergey V Naydenov, Van Geet, Vladimir D Ryzhikov, Wilkins   +16 more
core   +2 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source