Results 71 to 80 of about 715,745 (305)

Gamma-ray polarization induced by cold electrons via Compton processes

, 2013
The polarization measurement is an important tool to probe the prompt emission mechanism in gamma-ray bursts (GRBs). The synchrotron photons can be scattered by cold electrons in the outflow via Compton scattering processes.
Chang, Zhe, Jiang, Yunguo, Lin, Hai-Nan
core   +1 more source

Forward Diffracted Parametric X Radiation From a Thick Tungsten Single Crystal at 855 MeV Electron Energy [PDF]

, 2006
Features of forward diffracted Parametric X-Radiation (PXR) were investigated at experiments with the 855 MeV electron beam of the Mainz Microtron MAMI employing a 410 micrometer thick tungsten single crystal.
Backe, H., Gogolev, A. S., Kunz, P., Lauth, W., Potylitsyn, A. P., Scharafutdinov, A. F.   +5 more
core   +2 more sources

Engineering Deformation and Failure in Diamond Triply Periodic Minimal Surface Lattices via 3D Wall‐Thickness Grading

Advanced Engineering Materials, EarlyView.
The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza, Danilo Bruson, Manuela Galati, Luca Iuliano   +3 more
wiley   +1 more source

An investigation of a close-coupled canard as a direct side-force generator on a fighter model at Mach numbers from 0.40 to 0.90 [PDF]

The canard panels had 5 deg of dihedral and were deflected differentially or individually over an incidence range from 10 deg to -10 deg and a model angle-of-attack range from -4 deg to 15 deg. Significant side forces were generated in a transonic tunnel
Capone, F. J., Re, R. J.
core   +1 more source

Serrated trailing edges for improving lift and drag characteristics of lifting surfaces [PDF]

, 1992
An improvement in the lift and drag characteristics of a lifting surface is achieved by attaching a serrated panel to the trailing edge of the lifting surface.
Bushnell, Dennis M., Holmes, Bruce J., Howard, Floyd G., Vijgen, Paul M. H. W.   +3 more
core   +1 more source

Specific Heat Study of the Magnetic Superconductor HoNi2B2C

, 2004
The complex magnetic transitions and superconductivity of HoNi2B2C were studied via the dependence of the heat capacity on temperature and in-plane field angle.
A. Amici, A. Amici, A. Dertinger, A. Kreyssig, A. Kreyssig, A.C. du Mar, A.I. Goldman, A.J. Campbell, B.E. Keen, B.K. Cho, B.K. Cho, C. Detlefs, E. Boaknin, E. Pellegrin, Eun Mi Choi, F. Bouquet, H. Eisaki, H. Michor, H.D. Yang, Heon Jung Kim, J.H. Choi, J.W. Lynn, K.D.D. Rathnayaka, L. Onsager, L.N. Bulaevskii, L.P. Kadanoff, M. B. Salamon, M. El-Hagary, M. El-Hagary, M. Nohara, M.E. Fisher, M.S. Lin, P.C. Canfield, P.C. Canfield, R. Movshovich, S. Haas, S.A. Carter, S.V. Shulga, Sung-Ik Lee, T. Mishonov, T. Park, T. Park, T.A. Wagner, T.E. Grigereit, Tuson Park   +44 more
core   +1 more source

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

Advanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

A numerical method for computing unsteady 2-D boundary layer flows [PDF]

, 1988
A numerical method for computing unsteady two-dimensional boundary layers in incompressible laminar and turbulent flows is described and applied to a single airfoil changing its incidence angle in time.
Krainer, Andreas
core   +1 more source

Radiative torque alignment: Essential Physical Processes

, 2007
We study the physical processes that affect the alignment of grains subject to radiative torques (RATs). To describe the action of RATs, we use the analytical model (AMO) of RATs introduced in Paper I.
A. Lazarian, Aiken, Andersson, Arce, Bethell, Cho, Cho, Crutcher, Davis, Davis, Dolginov, Dolginov, Draine, Draine, Draine, Draine, Gold, Gold, Goodman, Greenberg, Hall, Harwit, Hildebrand, Hildebrand, Hiltner, Hoang, Hoang, Hough, Jones, Kim, Lai, Landau, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Lazarian, Mathis, Mathis, Matthews, Matthews, Matthews, Pagani, Pelkonen, Purcell, Purcell, Purcell, Purcell, Roberge, Roberge, Roberge, Serkowski, Spitzer, Thiem Hoang, Ward-Thompson, Ward-Thompson, Weingartner, Whittet, Whittet, Yan, Yan   +72 more
core   +3 more sources

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source