Results 111 to 120 of about 292,962 (302)

Reanalysis of the spectrum of the z=10 galaxy

open access: yes, 2004
In a recent paper Pello et al. reported observations of a faint galaxy, gravitationally lensed by the galaxy cluster Abell 1835. Deep J-band spectroscopy revealed a weak emission line near 1.34 microns, detected in two spectra with different central ...
Babbedge, T. S. R.   +2 more
core   +3 more sources

High‐Concentration Mesogen‐Assisted Exfoliation of Low‐Dimensional Nanomaterials for Achieving Ultralow‐Temperature Actuations of Liquid Crystal Elastomers

open access: yesAdvanced Functional Materials, EarlyView.
Most matter is nominally frozen in the polar regions or space, and liquid crystal materials are no exception. Consequently, soft actuators, including liquid crystal elastomers (LCEs), are inoperative under such extreme cold in response to stimuli, as their motion relies on mechanical deformation.
Hyeonseong Kim   +5 more
wiley   +1 more source

WISE Brown Dwarf Binaries: The Discovery of a T5+T5 and a T8.5+T9 System [PDF]

open access: yes, 2011
The multiplicity properties of brown dwarfs are critical empirical constraints for formation theories, while multiples themselves provide unique opportunities to test evolutionary and atmospheric models and examine empirical trends.
Cushing, Michael C.   +8 more
core  

Emergence of Light‐Transforming Layered Hybrid Halide Perovskites

open access: yesAdvanced Functional Materials, EarlyView.
The emerging class of light‐transforming layered halide perovskite materials is reviewed, outlining challenges for their development and perspectives toward application in the future. Abstract Layered hybrid halide perovskites (LHPs) have attracted considerable attention in optoelectronics.
Ghewa AlSabeh, Jovana V. Milić
wiley   +1 more source

Identification of Low‐Value Defects in Infrared Images of Porcelain Insulators Based on STCE‐YOLO Algorithm

open access: yesEnergy Science & Engineering
Insulators, as a key component of the power system, their low‐value defect detection is of great significance to ensure the safe and stable operation of the power system.
Shaotong Pei   +6 more
doaj   +1 more source

Aware Distribute and Sparse Network for Infrared Small Target Detection

open access: yesIEEE Access
Deep learning has achieved tremendous success in the field of object detection. The efficient detection of infrared small targets using deep learning methods remains a challenging task.
Yansong Song, Boxiao Wang, Keyan Dong
doaj   +1 more source

DENTA: A Dual Enzymatic Nanoagent for Self‐Activating Tooth Whitening and Biofilm Disruption

open access: yesAdvanced Functional Materials, EarlyView.
The nanoapatite with dual enzymes (DENTA) accumulates in dentinal tubules, reducing hypersensitivity caused by dental nerve exposure and facilitating continuous ROS generation through salivary glucose for effective, long‐term whitening. The dentin structures remain non‐destructive due to the low concentration of ROS, demonstrating excellent cell ...
Junseok Kim   +13 more
wiley   +1 more source

Research on Infrared Small Target Detection Algorithm Based on Foreground Moving Target and Deep Learning for Space Detection

open access: yesSpace: Science & Technology
Addressing the challenging problem of detecting small targets in space, an infrared small target detection algorithm that incorporates foreground moving targets and deep learning is introduced.
Dan Shan   +7 more
doaj   +1 more source

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