Results 91 to 100 of about 9,888 (286)

Research Status and Development Direction of Well Log Cyclostratigraphy

Cejing jishu
Well log cyclostratigraphy has become the foundation for studying many key scientific issues in the field of geosciences by identifying, extracting, and interpreting astronomical cycles recorded by geophysical logs. This paper analyzes the driving forces
PENG Cheng, ZOU Changchun, CAO Jinyu
doaj   +1 more source

Ice sheets and sea level change as a response to climatic change at the astronomical time scale

, 1990
Understanding how and why global climate is changing is investigated at the astronomical time scale related to the glacial-interglacial cycles of the Quaternary Ice Age.A 2-dimensional physical model taking into account the coupling between the ...
CH. Tricot, Fichefet, T., TH. Fichefet, Gallée, H., Marsiat, I., I. Marsiat, J. P. Ypersele, A. Berger, H. Gallee, van Ypersele, J.P., Berger, A., Tricot, Ch.   +11 more
core   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source

The "Spalakh" astronomical television system

, 2005
The description of the new astronomical television system “Spalakh” is cited. The system is intended for fast phenomena observations with exact link to time scale.
Kleshchonok, V.V.
core   +2 more sources

Luminescence and Photochromism in Lanthanide‐Doped Hackmanites

Advanced Optical Materials, EarlyView.
Lanthanide‐doped lithium hackmanite derivatives are prepared utilizing a doped LiAlSiO4 precursor to modify luminescent and photochromic properties. Upon UV excitation, europium doping results in green Eu2+ persistent luminescence from shallow traps. Contrarily, samarium doping induces unusual near‐infrared photochromism.
Joshua Baggott, Minnea Tuomisto, J. A. Gareth Williams, Sari Granroth, Ermei Mäkilä, Ari Väisänen, Jani O. Moilanen, Mika Lastusaari   +7 more
wiley   +1 more source

The Polarization Signatures of the Inverse Cascade in Magnetic Turbulence

The Astrophysical Journal
The inverse cascade of magnetic energy from smaller to larger scales is a key physical process for the formation of coherent magnetic fields in many astronomical turbulent systems.
X. W. Zhu, Y. Xie, Z. Lei, W. Q. Yuan, X. X. Jin, Z. H. Zhao, B. Qiao   +6 more
doaj   +1 more source

Efficient Deep Learning for Real-time Classification of Astronomical Transients [PDF]

, 2023
A new golden age in astronomy is upon us, dominated by data. Large astronomical surveys are broadcasting unprecedented rates of information, demanding machine learning as a critical component in modern scientific pipelines to handle the deluge of data ...
Allam, Tarek Jr.
core  

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

A Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Identification of Astronomical Cycles in Upper Cretaceous Sifangtai Formation and Constraints on Depositional Age of Uranium Mineralized Sandstones in Qian’an Area of Songliao Basin

Yuanzineng kexue jishu
Cyclostratigraphy is widely applied in establishing high-precision sequence stratigraphic frameworks and astronomical time scales, making it an important field in the quantitative study of sedimentology.
WANG Junxian1, 2, ,  LI Ziying1, 2, ,  XING Zuochang1, 2,  LIU Jungang1, 2,  SHI Qingping1, 2,  TIAN Mingming1, 2,  JIA Licheng1, 2
doaj   +1 more source