Results 51 to 60 of about 21,857 (278)

Multiscale BRDF Modeling and Scale Effect Analysis Using UAV Multiangle Remote Sensing

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Uncrewed aerial vehicles (UAVs) are increasingly used in close-range remote sensing due to flexible multiangle observations and high spatial resolution.
Junqin Xie, Hu Zhang, Jingtian Pu, Zimeng Yan, Yongzhen Cai, Lei Cui, Hongtao Cao   +6 more
doaj   +1 more source

Effect of surface BRDF of various land cover types on geostationary observations of tropospheric NO₂ [PDF]

Atmospheric Measurement Techniques, 2014
We investigated the effect of surface reflectance anisotropy, bidirectional reflectance distribution function (BRDF), on satellite retrievals of tropospheric NO2.
K. Noguchi, A. Richter, V. Rozanov, A. Rozanov, J. P. Burrows, H. Irie, K. Kita   +6 more
doaj   +1 more source

Anisotropic optical response of the diamond (111)-2x1 surface

, 1995
The optical properties of the 2$\times$1 reconstruction of the diamond (111) surface are investigated. The electronic structure and optical properties of the surface are studied using a microscopic tight-binding approach.
A. I. Shkrebtii, A. Selloni, A. Selloni, A.G. Bagchi, A.R. Turner, B.B. Pate, B.B. Pate, B.N. Davidson, C. Kress, C. Noguez, C. Noguez, Cecilia Noguez, D. Vanderbilt, D.A. Drabold, D.A. Drabold, D.E. Aspnes, D.R. Alfonso, F. Ancilotto, F. Bassani, F. Manghi, F.G. Celii, F.J. Himpsel, G.B. Adams, G.D. Kubiak, H. Ibach, J.D. Jackson, J.D.E. McIntyre, J.E. Northrup, J.E. Northrup, J.F. Morar, J.M. Nicholls, K.C. Pandey, M. Roy, N. Takeuchi, O.F. Sankey, P. Chiaradia, P. Vogl, P.G. Lurie, Ph. Hofmann, R. Del Sole, R. Del Sole, R. Del Sole, R. Stumpf, R.I. Uhrberg, S. Iarlori, S.V. Pepper, S.V. Pepper, Sergio E. Ulloa, T. Yasuda, V.I. Gavrilenko, W.L. Mochán, W.L. Mochán, W.L. Mochán, W.L. Schaich, Y. Borensztein   +54 more
core   +1 more source

Diffusion Spectrum Imaging Maps Early Axonal Loss and a Unique Progressive Signal in Neuronal Intranuclear Inclusion Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To delineate specific in vivo white matter pathology in neuronal intranuclear inclusion disease (NIID) using diffusion spectrum imaging (DSI) and define its clinical relevance. Methods DSI was performed on 42 NIID patients and 38 matched controls.
Kaiyan Jiang, Yixiu Pei, Xiaobao Hu, Ying Xiong, Fang Wang, Yanyan Yu, Min Zhu, Dandan Tan, Meihong Zhou, Daojun Hong, Fuqing Zhou   +10 more
wiley   +1 more source

Revealing sub-{\mu}m inhomogeneities and {\mu}m-scale texture in H2O ice at Megabar pressures via sound velocity measurements by time-domain Brillouin scattering [PDF]

, 2014
Time-domain Brillouin scattering technique, also known as picosecond ultrasonic interferometry, which provides opportunity to monitor propagation of nanometers to sub-micrometers length coherent acoustic pulses in the samples of sub-micrometers to tens ...
Bulou, Alain, Castagnede, Bernard, Chigarev, Nikolay, Gasteau, Damien, Gusev, Vitalyi E., Nikitin, Sergey M., Tournat, Vincent, Zerr, Andreas   +7 more
core   +2 more sources

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

A Manual Transportable Instrument Platform for Ground-Based Spectro-Directional Observations (ManTIS) and the Resultant Hyperspectral Field Goniometer System

Sensors, 2013
This article presents and technically describes a new field spectro-goniometer system for the ground-based characterization of the surface reflectance anisotropy under natural illumination conditions developed at the Alfred Wegener Institute (AWI).
Marcel Buchhorn, Reinhold Petereit, Birgit Heim   +2 more
doaj   +1 more source

Electron effective mass in Sn-doped monoclinic single crystal $\beta$-gallium oxide determined by mid-infrared optical Hall effect [PDF]

, 2017
The isotropic average conduction band minimum electron effective mass in Sn-doped monoclinic single crystal $\beta$-Ga$_2$O$_3$ is experimentally determined by mid-infrared optical Hall effect to be $(0.284\pm0.013)m_{0}$ combining investigations on ...
Alyssa Mock, Azzam R. M., Bo Monemar, Fujiwara H., Golz C., Granqvist C. G., Ken Goto, Masataka Higashiwaki, Mathias Schubert, Perevalov T., Rafał Korlacki, Sean Knight, Stepanov S., Vanya Darakchieva, Yoshinao Kumagai   +14 more
core   +4 more sources

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source