Results 121 to 130 of about 4,137,537 (260)

Noble gases and nitrogen in material from asteroid Bennu

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty   +7 more
wiley   +1 more source

Drelów, the 13th and latest meteorite fall in Poland—A typical L6 chondrite with shock veins

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract On Tuesday, February 18, 2025, at 18:04:14 local time, residents of Poland observed a bright fireball registered by many Polish fireball stations belonging to the Skytinel Network established a few months before by Mateusz Żmija. Thus, the meteoroid's orbit, atmospheric trajectory, and the strewn field were calculated, and over 70 fragments ...
Addi Bischoff   +18 more
wiley   +1 more source

Quantification of radiological hazards associated with natural radionuclides in soil, granite and charnockite rocks at selected fields in Ekiti State, Nigeria. [PDF]

open access: yesHeliyon, 2023
Isinkaye MO   +10 more
europepmc   +1 more source

Concentrations of natural radionuclides in imported mineral substances

open access: yesEnvironment International, 2001
Levels of natural radionuclides, such as thorium-232 (232Th), radium-226 (226Ra) and potassium-40 (40K), were determined in about 2,000 samples of imported mineral substances using gamma spectrometry. The maximum concentration levels of 232Th, 226Ra and 40K were 1,260 +/- 54, 13,400 +/- 94 and 1,256 +/- 260 Bq kg(-1), respectively, in zirconium ...
M, Ghiassi-Nejad   +4 more
openaire   +2 more sources

Tocotrienols: A Review From Source to Therapeutic Applications

open access: yesFood Frontiers, Volume 7, Issue 2, March 2026.
Tocotrienols demonstrate superior antioxidant, neuroprotective, and anti‐inflammatory properties compared to conventional vitamin E forms, with promising therapeutic applications across multiple disorders when delivered through optimized systems that enhance their inherently limited bioavailability.
Natalia‐Carolina Londoño   +6 more
wiley   +1 more source

Bismuth Bicycles

open access: yesJournal of Peptide Science, Volume 32, Issue 3, March 2026.
Discovery, evolution and potential future applications of bismuth bicycle molecules—a novel class of therapeutics with unique properties. ABSTRACT Bicyclic peptides are emerging as next generation therapeutics by combining the affinity and specificity of antibodies with the synthetic convenience of small molecules.
Saan Voss   +8 more
wiley   +1 more source

Naturally occurring radionuclides and Earth sciences

open access: yesAnnals of Geophysics, 1997
Naturally occurring radionuclides are used in Earth sciences for two fundamental purposes: age determination of rocks and minerals and studies of variation of the isotopic composition of radiogenic nuclides. The methodologies that are in use today allow us to determine ages spanning from the Earth's age to the late Quaternary.
openaire   +3 more sources

Atmospheric and Deposition Responses of 10Be to Volcanic Eruptions Inferred From the Aerosol‐Climate Model ECHAM6.3‐HAM2.3‐SALSA2.0: 10Be

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract 10Be deposition in ice cores is widely used for solar reconstructions, but its interpretation is complicated by volcanic influences. Using the state‐of‐the‐art aerosol‐climate model ECHAM6.3‐HAM2.3‐SALSA2.0: 10Be, we assess the impacts of three major volcanic eruptions: Agung (1963), El Chichón (1982) and Pinatubo (1991). All eruptions enhance
Minjie Zheng   +8 more
wiley   +1 more source

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