Results 91 to 100 of about 171,503 (343)

Optimization of Deflection of a Big NEO through Impact with a Small One

open access: yesThe Scientific World Journal, 2014
Using a small near-Earth object (NEO) to impact a larger and potentially threatening NEO has been suggested as an effective method to avert a collision with Earth. This paper develops a procedure for analysis of the technique for specific NEOs. First, an
Kaijian Zhu   +4 more
doaj   +1 more source

Unraveling LINE‐1 retrotransposition in head and neck squamous cell carcinoma

open access: yesMolecular Oncology, EarlyView.
The novel RetroTest method allows the detection of L1 activation in clinical samples with low DNA input, providing global L1 activity and the identification of the L1 source element. We applied RetroTest to a real‐world cohort of HNSCC patients where we reported an early L1 activation, with more than 60% of T1 patients showing L1 activity.
Jenifer Brea‐Iglesias   +12 more
wiley   +1 more source

Telescope-to-Fireball Characterization of Earth Impactor 2022 WJ1

open access: yesThe Planetary Science Journal
Comparing how an asteroid appears in space to its ablation behavior during atmospheric passage and finally to the properties of associated meteorites represents the ultimate probe of small near-Earth objects.
Theodore Kareta   +12 more
doaj   +1 more source

Development of Radar and Optical Tracking of Near-Earth Asteroids at the University of Tasmania

open access: yesRemote Sensing
We detail the use of the University of Tasmania’s (UTAS) optical and radio telescopes to conduct observations of near-Earth asteroids from 2021 to 2024.
Oliver James White   +11 more
doaj   +1 more source

BMP antagonist CHRDL2 enhances the cancer stem‐cell phenotype and increases chemotherapy resistance in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
Overexpression of CHRDL2 in colon cancer cells makes them more stem‐like and resistant to chemo‐ and radiotherapy. CHRDL2‐high cells have upregulation of the WNT pathway, genes involved in the DNA damage response (DDR) pathway and epithelial‐to‐mesenchymal transition (EMT). This leads to quicker repair of damaged DNA and more cell migration.
Eloise Clarkson, Annabelle Lewis
wiley   +1 more source

Aerostat-Based Observation of Space Objects in the Stratosphere

open access: yesApplied Sciences
For the requirements of the multi-means observation and emergency monitoring of space objects, including space debris and near-earth asteroids, this paper analyzes the astronomical observation conditions in the stratosphere, which is the region of the ...
Jiang Wang   +6 more
doaj   +1 more source

Automatic telescope for observation of near-Earth asteroids

open access: yesВісник Астрономічної школи, 2004
The old 64-cm Richter–Slefogt telescope (F=90 cm) of the Crimean Astrophysical Observatory was reconstructed and equipped with the ST-8 CCD camera supplied by The Planetary Society as the Eugene Shoemaker Near Earth Object Grant.
V. V. Rumyantsev, N. S. Chernykh
doaj   +1 more source

Association of high‐dose radioactive iodine therapy with PPM1D‐mutated clonal hematopoiesis in older individuals

open access: yesMolecular Oncology, EarlyView.
In thyroid cancer patients, high‐dose (≥7.4 GBq) radioactive iodine therapy (RAIT) was associated with a higher prevalence of clonal hematopoiesis (variant allele frequency >2%) in individuals aged ≥50 years (OR = 2.44). In silico analyses showed that truncating PPM1D mutations conferred a selective advantage under these conditions.
Jaeryuk Kim   +11 more
wiley   +1 more source

The Discovery and Characterization of Earth-crossing Asteroid 2024 YR4

open access: yesThe Astrophysical Journal Letters
We describe observations and physical characteristics of Earth-crossing asteroid 2024 YR _4 , discovered on 2024 December 27 by the Asteroid Terrestrial-impact Last Alert System.
Bryce T. Bolin   +11 more
doaj   +1 more source

The United Nations’ Reso Lution 2325 “Non-Proliferation of Weapons of Mass Destruction” and Its Role in Preventing Terrestrial-Based WMD Utilization Toward Orbiting Space Objects

open access: yesSEEU Review, 2020
The 2016 United Nations’ Resolution 2325 “Non-proliferation of Weapons of Mass Destruction” manifests one of the greatest challenges for humankind in relation to preventing a global catastrophe, where it reaffirms that the proliferation of nuclear ...
Stojchevska Stefani
doaj   +1 more source

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