825 research outputs found
Improved reflectance reconstruction for multispectral imaging by combining different techniques
Author name used in this publication: John H. XinAuthor name used in this publication: Si-Jie Shao2006-2007 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Reflectance reconstruction for multispectral imaging by adaptive Wiener estimation
Author name used in this publication: Si-Jie ShaoAuthor name used in this publication: John H. Xin2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Optimal selection of representative colors for spectral reflectance reconstruction in a multispectral imaging system
Author name used in this publication: John H. XinAuthor name used in this publication: Si-Jie Shao2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Channel selection for multispectral color imaging using binary differential evolution
2013-2014 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Autofocus for multispectral camera using focus symmetry
Author name used in this publication: Si-Jie ShaoAuthor name used in this publication: John H. Xin2011-2012 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe
Observation of a ppb mass threshoud enhancement in \psi^\prime\to\pi^+\pi^-J/\psi(J/\psi\to\gamma p\bar{p}) decay
The decay channel
is studied using a sample of events collected
by the BESIII experiment at BEPCII. A strong enhancement at threshold is
observed in the invariant mass spectrum. The enhancement can be fit
with an -wave Breit-Wigner resonance function with a resulting peak mass of
and a
narrow width that is at the 90% confidence level.
These results are consistent with published BESII results. These mass and width
values do not match with those of any known meson resonance.Comment: 5 pages, 3 figures, submitted to Chinese Physics
Influence of different fillers on the properties of an experimental vinyl polysiloxane
Heterostructured electrode with concentration gradient shell for highly efficient oxygen reduction at low temperature
Heterostructures of oxides have been widely investigated in optical, catalytic and electrochemical applications, because the heterostructured interfaces exhibit pronouncedly different transport, charge, and reactivity characteristics compared to the bulk of the oxides. Here we fabricated a three-dimensional (3D) heterostructured electrode with a concentration gradient shell. The concentration gradient shell with the composition of Ba0.5-xSr0.5-yCo0.8Fe0.2O3-δ (BSCF-D) was prepared by simply treating porous Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) backbone with microwave-plasma. Electrochemical impedance spectroscopy reveals that the oxygen surface exchange rate of the BSCF-D is enhanced by ~250% that of the pristine BSCF due to the appearance of the shell. The heterostructured electrode shows an interfacial resistance as low as 0.148 Ω cm2 at 550°C and an unchanged electrochemical performance after heating treatment for 200 h. This method offers potential to prepare heterostructured oxides not only for electrochemical devices but also for many other applications that use ceramic materials
Determinants of access to HIV testing and counselling services among female sex workers in sub-Saharan Africa: a systematic review
Quality appraisal tool. (DOCX 20 kb
Ambient fabrication of flexible and large-area organic light-emitting devices using slot-die coating
The grand vision of manufacturing large-area emissive devices with low-cost roll-to-roll coating methods, akin to how newspapers are produced, appeared with the emergence of the organic light-emitting diode about 20 years ago. Today, small organic light-emitting diode displays are commercially available in smartphones, but the promise of a continuous ambient fabrication has unfortunately not materialized yet, as organic light-emitting diodes invariably depend on the use of one or more time- and energy-consuming process steps under vacuum. Here we report an all-solution-based fabrication of an alternative emissive device, a light-emitting electrochemical cell, using a slot-die roll-coating apparatus. The fabricated flexible sheets exhibit bidirectional and uniform light emission, and feature a fault-tolerant >1-μm-thick active material that is doped in situ during operation. It is notable that the initial preparation of inks, the subsequent coating of the constituent layers and the final device operation all could be executed under ambient air
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