Results 41 to 50 of about 1,700,153 (295)

Comparative Analysis of SWH Retrieval Between BDS-R and GPS-R Utilizing FY-3E/GNOS-II Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
High-precision sea surface significant wave height (SWH) data are crucial for advancing oceanic shipping and marine resource development. In this study, we conducted a comparative analysis of parameter sensitivity and accuracy in SWH retrieval between ...
Hui Yu   +12 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Telescopes and space exploration [PDF]

open access: yes
The necessity for different types of telescopes for astronomical investigations is discussed. Major findings in modern astronomy by ground-based and spaceborne telescopes are presented. Observations of the Crab Nebula, solar flares, interstellar gas, and
Brandt, J. C., Maran, S. P.
core   +4 more sources

In Situ Optimized Substrate Witness Plates: Ground Truth for Key Processes on the Moon and Other Planets

open access: yesEarth and Space Science, 2023
Future exploration efforts of the Moon, Mars, and other bodies are poised to focus heavily on persistent and sustainable survey and research efforts, especially given the recent interest in a long‐term sustainable human presence at the Moon. Key to these
Prabal Saxena   +14 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Abrupt reduction in shipping emission as an inadvertent geoengineering termination shock produces substantial radiative warming

open access: yesCommunications Earth & Environment
Human activities affect the Earth’s climate through modifying the composition of the atmosphere, which then creates radiative forcing that drives climate change.
Tianle Yuan   +10 more
doaj   +1 more source

Retrieving Ocean Surface Wind Speeds in Real Time on Spaceborne GNSS-R Receivers: Algorithm and Validation

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Based on delay-Doppler maps (DDMs) in raw counts generated by spaceborne global navigation satellite system reflectometry (GNSS-R) receivers, retrieving ocean surface wind speeds is feasible, so several spaceborne GNSS-R missions have been carried out ...
Tongsheng Qiu   +13 more
doaj   +1 more source

The Average Coding Length of Huffman Coding Based Signal Processing and Its Application in Fault Severity Recognition

open access: yesApplied Sciences, 2019
The transient impact components in vibration signal, which are the major information for bearing fault severity recognition, are often interfered with by ambient noise.
Jiancheng Yin   +5 more
doaj   +1 more source

Variations of the surface characteristics of Ryugu returned samples

open access: yesEarth, Planets and Space, 2023
Hayabusa2 spacecraft successfully collected rock samples from the surface of C-type near-Earth asteroid 162173 Ryugu through two touchdowns and brought them back to Earth in 2020.
Aiko Nakato   +29 more
doaj   +1 more source

Pre-Launch Spectral Calibration of the Absorbed Aerosol Sensor

open access: yesSensors, 2023
Spectral calibration consists of the calibration of wavelengths and the measurement of the instrument’s spectral response function (SRF). Unlike conventional slits, the absorbed aerosol sensors (AAS) are used as a slit homogenizer, in which the SRF is ...
Jinghua Mao   +3 more
doaj   +1 more source

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