Results 31 to 40 of about 155,797 (260)

Studying the Child Obesity Epidemic with Natural Experiments [PDF]

, 2009
We utilize clinical records of successive visits by children to pediatric clinics in Indianapolis to estimate the effects on their body mass of environmental changes near their homes.
Gilbert Liu, Jeff Wilson, John Ottensmann, O. T. Ford, Robert Sandy, Rusty Tchernis   +5 more
core   +1 more source

Epoxy-reinforced heavy metal oxides for gamma ray shielding purposes

Open Chemistry, 2023
Epoxy resins with varying amounts of MoO3 were theoretically investigated for their radiation shielding ability at low energies (between 0.0395 and 0.344 MeV). The quantity of MoO3 varied from 0 to 30%, and relevant shielding parameters were obtained and
Almuqrin Aljawhara H., Aloraini Dalal Abdullah, Abualsayed Mohammad Ibrahim   +2 more
doaj   +1 more source

Time-Resolved Studies of Stick-Slip Friction in Sheared Granular Layers

, 1998
Sensitive and fast force measurements are performed on sheared granular layers undergoing stick-slip motion, along with simultaneous imaging. A full study has been done for spherical particles with a +-20% size distribution.
A. Bak, A. Demirel, A. Johansen, A. Kudrolli, B. E. Shaw, B. Miller, B. N. J. Persson, C. Daly, C. G. Sammis, C. H. Scholz, C. Marone, C.-h. Liu, D. Cule, D. G. Wang, D. M. Hanes, D. M. Tolstoi, D. R. Scott, E. Kumacheva, E. Rabinowicz, F. Heslot, F. Radjai, F.-J. Elmer, G. H. Ristow, H. Jaeger, H. M. Jaeger, J. A. C. Martins, J. M. Carlson, J. P. Gollub, J. R. Rice, K. Heki, L. M. Jones, M. G. Rozman, M. L. Gee, N. M. Beeler, O. Pouliquen, P. A. Thompson, P. A. Thompson, S. B. Savage, S. Nasuno, S. Nasuno, T. Baumberger, T. Baumberger, V. K. Horváth, Y. Zhang   +43 more
core   +2 more sources

Machine learning as an instrument for data unfolding [PDF]

, 2017
A method for correcting for detector smearing effects using machine learning techniques is presented. Compared to the standard approaches the method can use more than one reconstructed variable to infere the value of the unsmeared quantity on event by ...
Glazov, Alexander
core   +1 more source

Laboratory and on-site tests for rapid runway repair [PDF]

, 2017
The attention to rapid pavement repair has grown fast in recent decades: this topic is strategic for the airport management process for civil purposes and peacekeeping missions.
Cassata, Mauro, de Rubeis, Alberto, di Mascio, Paola, Germinario, Antonello, Leonelli, Federico, Moretti, Laura, Picarella, Francesco   +6 more
core   +2 more sources

Gamma-ray attenuation characteristics of polypropylene filled with nano-sized and bulk Bi2O3 and CuO [PDF]

Nuclear Technology and Radiation Protection
Polypropylene was produced using compression molding and combined with bulk Bi2O3/CuO, and Bi2O3/CuO nanocomposites at various filler weight fractions (0%, 5%, 10%, 15%, and 20%).
Gouda Mona M., Shebly Mona, Habanjar Khulud, Obeid Amro, Awad Ramadan, Badawi Mohamed S.   +5 more
doaj   +1 more source

Latent Relational Metric Learning via Memory-based Attention for Collaborative Ranking

, 2018
This paper proposes a new neural architecture for collaborative ranking with implicit feedback. Our model, LRML (\textit{Latent Relational Metric Learning}) is a novel metric learning approach for recommendation. More specifically, instead of simple push-
Hui, Siu Cheung, Luu, Anh Tuan, Tay, Yi
core   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

The influence of PbO and Bi2O3 on the radiation shielding and elastic features for different glasses

Journal of Materials Research and Technology, 2020
The radiation shielding effects and elastic properties of adding lead (Pb) and bismuth (Bi) to glasses was analyzed. Six different glasses, coded as G1-G6, were simulated with varying compositions of bismuth oxide and lead oxide, with G1 having the ...
Mohammed Abu Al Sayyed, Mohd Hafiz Mohd Zaid, Nuraidayanie Effendy, Khamirul Amin Matori, Hj Ab Aziz Sidek, Eloic Lacomme, Karim Al Mahmoud, Maha Mohammed AlShammari   +7 more
doaj   +1 more source

Analysis of particle size on mass dependent attenuation capability of bulk and nanoparticle PbO radiation shields

Results in Physics, 2021
This study aims to evaluate the effect of particle size on the mass dependent attenuation ability of bulk and nanoparticles PbO. The mass attenuation coefficient, or MAC, of the samples was experimentally calculated using the HPGe detector at various ...
M. Elsafi, M.I. Sayyed, Aljawhara H. Almuqrin, M.M. Gouda, A.M. El-khatib   +4 more
doaj   +1 more source