Results 91 to 100 of about 15,251 (244)
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.Abstract Accurate characterization of gravel structures is essential for understanding riverbed roughness, flow resistance, and sediment transport. However, quantifying the definitive characteristics of these gravel structures remains challenging due to the inherent complexity of particle spatial arrangement. This study presents an improved statistical
Jie Qin, Teng Wu
wiley +1 more source
Conditions for the formation of anomalous tail of comet
Open Astronomy, 2019 The time and velocity of ejection of dust particles of anomalous tails from cometary nuclei are determined. It is revealed that some comets cause the formation of an anomalous tail is the collision of their comet nucleus with other bodies of the Solar ...
Safarov Abduljalol G. +1 more
doaj +1 more source
Correlation of Solar Activity and Features in the Tail of Comet 1964 C [PDF]
, 1965 Michael F. A’Hearn
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NECTAR ROBBING BY THE RED-TAILED COMET (SAPPHO SPARGANURUS, TROCHILIDAE): THE VALUE OF CITIZEN SCIENCE TO DOCUMENT INFREQUENT BEHAVIOR IN BIRDS [PDF]
, 2023 Luciana Tellería +2 more
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Aging Cell, Volume 25, Issue 2, February 2026.Using in vitro DNA damage assays in human T cells, ex vivo profiling of aged immune subsets and a small placebo‐controlled in vivo study, authors show that low‐dose rapamycin, a potent life‐extending mTOR inhibitor, enhances resilience against DNA damage in the human immune system.
Loren Kell +8 more
wiley +1 more source
The Secretome of Human Trophoblast Stem Cells Attenuates Senescence‐Associated Traits
Aging Cell, Volume 25, Issue 2, February 2026.Human trophoblast stem cell‐derived secretome/conditioned medium (hTSC‐CM) and the extracellular vesicles (EVs) therein suppress DNA damage and NF‐κB activation in senescent fibroblasts, in turn reducing the production of senescence‐associated secretory phenotype (SASP) factors. This study highlights hTSC‐CM and EVs as potential senotherapeutic agents.
Kotb Abdelmohsen +18 more
wiley +1 more source
The date and context of the Astronomer's Life of Louis the Pious
Early Medieval Europe, Volume 34, Issue 1, Page 70-100, February 2026.The Astronomer's Life of the emperor Louis the Pious (814–40) is a canonical source for scholars of Frankish history. It sits at the centre of recent debates about the nature and tone of Carolingian political discourse, and about the crisis of the empire in the 830s.
Simon MacLean
wiley +1 more source
مجله دانشکده پزشکی اصفهان, 2013 مقدمه: تخریب DNA به دنبال تماس با عوامل توکسیک گوناگون میتواند سبب افزایش خطر سرطان شود. گیاه کرفس کوهی یکی از گیاهان اندمیک ایران میباشد که مصرف خوراکی و دارویی دارد.
Mahmoud Etebari +3 more
doaj