Results 51 to 60 of about 292,962 (302)

CLOUDS search for variability in brown dwarf atmospheres [PDF]

, 2008
Context: L-type ultra-cool dwarfs and brown dwarfs have cloudy atmospheres that could host weather-like phenomena. The detection of photometric or spectral variability would provide insight into unresolved atmospheric heterogeneities, such as holes in a ...
Ackerman, Allard, B. Goldman, Bailer-Jones, Bailer-Jones, Bailer-Jones, Bailer-Jones, Basri, Bouy, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, Burgasser, C. R. Gelino, Chiu, Clarke, Clarke, Clarke, Cushing, Cushing, Cushing, D. Nadeau, D. Stephens, Dahn, E. L. Martín, Enoch, Geballe, Gelino, Goldman, Golimowski, H. B. Hammel, Hall, J. A. Caballero, J. Holtzman, K. S. Baliyan, Kirkpatrick, Kirkpatrick, Kirkpatrick, Knapp, Koen, Leggett, Liebert, Liu, M. C. Cushing, M. C. Liu, M. Connelley, M. S. Marley, Marley, Martín, McLean, Mohanty, Morales-Calderón, N. Chanover, Nakajima, R. Doyon, R. Sagar, Rayner, Reid, Roelling, S. Ganesh, S. Joshi, S. K. Leggett, Strauss, T. Forveille, Tinney, Tinney, Tsuji, U. C. Joshi, V. J. S. Béjar, V. Mohan, Vacca, Vrba, Wing, Zapatero Osorio, É. Artigau   +78 more
core   +6 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Research on region selection super resolution restoration algorithm based on infrared micro-scanning optical imaging model

Scientific Reports, 2021
With spring up of infrared imaging related industry, infrared imaging technology has become mainstream development direction of intelligent photoelectrical detection due to its good concealment, wide detection range, high positioning accuracy, long ...
Jian Chen, Yan Li, LiHua Cao
doaj   +1 more source

Fast and Robust Small Infrared Target Detection Using Absolute Directional Mean Difference Algorithm

, 2020
Infrared small target detection in an infrared search and track (IRST) system is a challenging task. This situation becomes more complicated when high gray-intensity structural backgrounds appear in the field of view (FoV) of the infrared seeker.
Moallem, Payman, Moradi, Saed, Sabahi, Mohamad Farzan   +2 more
core  

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Dual Enhancement Network for Infrared Small Target Detection

Applied Sciences
Infrared small target detection (IRSTD) is crucial for applications in security surveillance, unmanned aerial vehicle identification, military reconnaissance, and other fields.
Xinyi Wu, Xudong Hu, Huaizheng Lu, Chaopeng Li, Lei Zhang, Weifang Huang   +5 more
doaj   +1 more source

Sensitive detection of methane at 3.3 μm using an integrating sphere and interband cascade laser [PDF]

, 2016
Detection of methane at 3.3μm using a DFB Interband Cascade Laser and gold coated integrating sphere is performed. A 10cm diameter sphere with effective path length of 54.5cm was adapted for use as a gas cell.
Davis, Nicholas M., Francis, Daniel, Hodgkinson, Jane, Tatam, Ralph P.   +3 more
core   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Robust Infrared Small Target Detection Using a Novel Four-Leaf Model

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Infrared small target detection is widely used in the military field, and robust infrared small target detection has significant significance. Inspired by plants, an infrared small target detection method based on the four-leaf model is proposed.
Dali Zhou, Xiaodong Wang
doaj   +1 more source

Adaptive band selection snapshot multispectral imaging in the VIS/NIR domain

, 2010
Hyperspectral imaging has proven its efficiency for target detection applications but the acquisition mode and the data rate are major issues when dealing with real-time detection applications.
Ferrec, Yann, Lonnoy, Jacques, Minet, Jean, Péalat, Michel, Roux, Nicolas, Taboury, Jean   +5 more
core   +1 more source