Results 111 to 120 of about 1,371,683 (237)

A computer program to calculate artificial radiation belt decay factors [PDF]

, 1965
Computer program for calculating artificial radiation belt decay ...
Stassinopoulos, E. G.
core  

The Earliest Feathers from the Lower Cretaceous Dabeigou Formation of North Hebei: Implications for the Early Evolution of the Jehol Biota

Integrative Zoology, EarlyView.
This study reports two isolated feather fossils from the Lower Cretaceous Dabeigou Formation in northeastern China. Morphological analyses identified them as the earliest known feathered theropods (potentially including avian) in the Jehol Biota. This finding reveals a complex ecosystem at the dawn of the Jehol Biota, bridging the temporal and faunal ...
Qian Wu, Qian‐Nan Zhang, Dang‐Peng Xi   +2 more
wiley   +1 more source

Assessment of Spacecraft Internal Charging in the Earth's Outer Radiation Belt

Space Weather
The internal charging effects triggered by energetic (>100 keV) electrons in the Earth's radiation belts can cause anomalies and failures of electronic components aboard spacecraft.
Yuan Lei, Xing Cao, Binbin Ni, Xueshang Feng, Xiaoyu Wang   +4 more
doaj   +1 more source

Outer radiation belt variations during 1995

, 1998
The dynamics of the relativistic electron flux in the earth's outer radiation belt measured by the Radiation Environment Monitor aboard the STRV-1B satellite is presented from August 1994 to end of April 1996. During this period the earth's magnetosphere
Desorgher, L. (author), Adams, L. (author), Daly, E. (author), Zehnder, A. (author), Bühler, P. (author)   +4 more
core   +1 more source

Morphotype Bias, Morph Specific Recruitment and No Elevation‐Life History Relation in High Altitude Mesquite Lizard Populations

Integrative Zoology, EarlyView.
Site‐level differences in population growth (λ) and phenotype frequencies. Mountain silhouettes represent the three study sites. Morph relative abundances are shown in the colored vertical bar. Point estimates and confidence intervals of λ for each site are displayed below, with the dashed line marking the threshold for demographic stability (λ = 1 ...
Brasil Canales‐Gordillo, Wendy L. Cuandón‐Hernández, José L. Jaramillo‐Alba, Jorge I. Chiu‐Valderrama, Hibraim A. Pérez‐Mendoza   +4 more
wiley   +1 more source

Van Allen belt radiation on Tiros/TOS/ITOS spacecrafts [PDF]

, 1971
Van Allen belt radiation on Tiros/TOS/ITOS spacecrafts ...
Stassinopoulos, E. G.
core  

Genomic Diversity of the Endangered Guinan Toad‐Headed Lizard and Its Conservation Implications

Integrative Zoology, EarlyView.
We produced HiFi long reads and assembled a high‐quality genome for the Guinan toad‐headed lizard—Phrynocephalus guinanensis—and present a comprehensive conservation genomics assessment. Our findings clearly show population structure, a reduced genetic diversity pattern, and a strong bottleneck in demographic history, reaffirming the endangered status ...
Ying Chen, Song Tan, Yiru Wang, Xia Qiu, Da Kang, Weizhao Yang   +5 more
wiley   +1 more source

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source

THE ARTIFICAL RADIATION BELT MADE ON JULY 9, 1962 [PDF]

, 1963
Artificial radiation belt formed by high altitude nuclear explosion over johnston ...
Hess, W. N.
core  

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

Archaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source