Results 31 to 40 of about 1,011 (143)

The 40K‐K dating system: 1. Improving data interpretation using new model calculations

Meteoritics &Planetary Science, EarlyView.
Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian, Suzette Timmerman, Ingo Leya   +2 more
wiley   +1 more source

Solar Modulation of Low-energy Cosmic-Ray Nitrogen and Its Comparison with Oxygen

The Astrophysical Journal
The heliospheric environment is very complex and filled with diverse high-energy particles from various origins, and among these particles, cosmic rays (CRs), including anomalous and Galactic components (ACRs and GCRs), are unique as they originate from ...
Yun Li, Xiaoping Zhang, Shuai Fu, Zhenning Shen, Yi Xu, Haoyu Lu, Jinbin Cao, Tianle Zhu   +7 more
doaj   +1 more source

Fifty years of studying the GCR intensity during inversion of the heliospheric magnetic fields. II. HMF inversion on the inner heliospheric boundary

Solar-Terrestrial Physics
Phenomena in the outer layer of the solar atmosphere, the heliosphere, including the supersonic solar wind, the heliospheric magnetic field (HMF) carried by it, and cosmic rays propagating in the heliosphere are important for many processes occurring in ...
Krainev M. B., Kalinin M. S.
doaj   +1 more source

Low‐dose X‐ray radiation induces an adaptive response: A potential countermeasure to galactic cosmic radiation exposure

Experimental Physiology, EarlyView.
Abstract Space exploration involves many dangers including galactic cosmic radiation (GCR). This class of radiation includes high‐energy protons and heavy ionizing ions. NASA has defined GCR as a carcinogenic risk for long‐duration space missions. To date, no clear strategy has been developed to counter chronic GCR exposure.
Siena Edwards, Jessica Adams, Anastasia Tchernikov, John G. Edwards   +3 more
wiley   +1 more source

The SDEMMA model for galactic cosmic ray and its dosimetric application

Frontiers in Astronomy and Space Sciences
IntroductionFuture crewed missions to Mars will encounter substantially elevated radiation levels compared to low Earth orbit operations. To address this challenge, we present the Space-Dependent Energetic cosmic ray Modulation using MAgnetic ...
Xiaojian Song, Ran Huo, Songying Xu, Songying Xu, Xuemei Chen, Xuemei Chen, Xi Luo   +6 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

GCR Spectra Reconstructed with Neutron Monitor Yield Function and Artificial Neural Networks: Comparison of Two Methods

The Open Journal of Astrophysics
We present a framework that reconstructs time-resolved galactic cosmic-ray (GCR) proton and helium energy spectra from the global neutron monitor network, providing data about GCR flux without direct satellite observations.
Stepan A. Siruk, Vladislav V. Alekseev, Victor A. Kuzminov, Rustam F. Yulbarisov, Andrey G. Mayorov   +4 more
doaj   +1 more source

Model calculation of charged galactic cosmic ray radiation dose during a flight to Mars

Frontiers in Physics
The radiation exposure from galactic cosmic rays (GCRs) presents a significant challenge for human spaceflight to Mars. In this study, we employ our previously published GCR radiation dose calculation model to estimate the GCR radiation dose rates during
Dan Lyu, Gang Qin, Gang Qin
doaj   +1 more source

Effects of Oral Semaglutide on Dietary Intake and Body Composition in Japanese People With Type 2 Diabetes: A Prospective Observational Study in Clinical Practice

Endocrinology, Diabetes &Metabolism, Volume 9, Issue 5, September 2026.
This prospective observational study evaluated changes in dietary patterns and body composition after 3 months of oral semaglutide treatment in people with Type 2 diabetes. Oral semaglutide was associated with reduced energy intake, salt intake and body fat while preserving handgrip strength.
Mika Sawada, Naoko Nakanishi, Masakazu Aihara, Kanako Ohkuma, Shoko Hamano, Yoshitaka Sakurai, Rie Sekine, Satoshi Usami, Toshimasa Yamauchi, Naoto Kubota   +9 more
wiley   +1 more source

Structure–Property Relationship of Supported Organochromium Catalysts Using Combined Computational XANES Analysis and Mechanistic Simulation

ChemCatChem, Volume 18, Issue 15, 14 August 2026.
Combined computational XANES analysis and mechanistic simulations reveal how lithiation of oxide supports tunes the structure and selectivity of single‐site organochromium catalysts, providing molecular‐level insights and a generalizable strategy for designing selective ethylene oligomerization catalysts.
Yu Lim Kim, Jacklyn N. Hall, Jiayi Xu, David M. Kaphan, Massimiliano Delferro, Arthur Jeremy Kropf, Cong Liu   +6 more
wiley   +1 more source