Results 81 to 90 of about 1,108,263 (224)

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Rigid Boron‐Fused Frameworks for Efficient Near‐Infrared Emission and Optical Gain Beyond 900 nm

Advanced Optical Materials, EarlyView.
Multiple‐resonance (MR)‐derived boron‐fused frameworks were integrated into narrow‐gap, long‐range charge‐transfer emitters to reduce structural relaxation and electron‐vibrational coupling. This strategy significantly decreases nonradiative losses, leading to improved near‐infrared (NIR) luminescence efficiency and low‐threshold amplified spontaneous ...
Masashi Mamada, Atsushi Hatanaka, Masahiro Hayakawa, Shintaro Kohata, Chihaya Adachi, Hajime Nakanotani, Takuji Hatakeyama   +6 more
wiley   +1 more source

Integrated Path Detection of Co2 and CH4 Using a Waveform Driven Electro-Optic Single Sideband Laser Source

EPJ Web of Conferences, 2016
Integrated path concentrations of ambient levels of carbon dioxide and methane have been measured during nighttime periods at NIST, Boulder (CO, USA), using a ground-based, eyesafe laser system.
Wagner Gerd, Maxwell Stephen, Plusquellic David   +2 more
doaj   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

Event-Guided Image Reconstruction for Nighttime Dynamic Scenes

Journal of Imaging
Image reconstruction in nighttime dynamic scenes is challenged by low illumination, long exposure, rapid camera or object motion, and sensor noise. Conventional RGB cameras, therefore, struggle to recover both sufficient brightness and clear structural ...
Qingjiao Meng, Ji Li, Yan Jin
doaj   +1 more source

Semantic Segmentation With Low Light Images by Modified CycleGAN-Based Image Enhancement

IEEE Access, 2020
In recent years, the importance of semantic segmentation has been widely recognized and the field has been actively studied. The existing state-of-the-art segmentation methods show high performance for bright and clear images.
Se Woon Cho, Na Rae Baek, Ja Hyung Koo, Muhammad Arsalan, Kang Ryoung Park   +4 more
doaj   +1 more source

Secure Clustering Protocols in Wireless Sensor Networks [PDF]

, 2016
Wireless sensor networks (WSNs) are poised of huge number of low-cost and tiny devices i.e. senor nodes which communicate over wireless media. Various WSN based projects produced fruitful and interesting results that greatly improves our life.
Sharma, S C, SINGH, SANTAR PAL
core  

A non-invasive capacitive sensor strip for aerodynamic pressure measurement [PDF]

, 2005
This paper presents a capacitive pressure sensor strip implemented in general purpose printed circuit board (PCB) technology based on a thin 3D structure composed of polyimide, woven glass reinforced epoxy resin (FR4) and metal layers.
A. Talamelli, M. Zagnoni, E. Sangiorgi, Golfarelli, A., Tartagni, M., GOLFARELLI, ALESSANDRO, Callegari, S., Bonora, V., A. Golfarelli, M. Tartagni, Talamelli, A., Callegari, Sergio, V. Bonora, Sangiorgi, E., SANGIORGI, ENRICO, TALAMELLI, ALESSANDRO, BONORA, VIRNA, Zagnoni, Michele, S. Callegari, Zagnoni, M., Proli, P., TARTAGNI, MARCO   +21 more
core   +1 more source

Force–Displacement Characterization of PNIPAM Microactuators

Advanced Robotics Research, EarlyView.
A method to experimentally establish a force–displacement diagram of poly(N‐isopropyl acrylamide) (PNIPAM) microactuators, printed by 2PP, is presented herein. PNIPAM is a hydrogel whose volume and stiffness change with temperature due to the absorption or release of water.
Manon Cassignol, Esra Yalcinkaya, Adam Chafaï, Jérémy Odent, Pierre Lambert   +4 more
wiley   +1 more source

Tests Of Nighttime Solar Panel Temperature Depressions For Information Of Freeze Protection Sensor Placement.

, 1983
For direct solar systems with potable water in the collector loops, it is well recognized that freeze protection mechanisms must accomodate absorber plate temperature depressions resulting from nighttime thermal radiation; absorber plates become colder ...
Cromer, Charles
core