Results 31 to 40 of about 5,166,308 (289)

Space Radiation Measurement on the Polar Route onboard the Korean Commercial Flights [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2010
This study was performed by the policy research project of Ministry of Land, Transport and Maritime Affairs, which title is “Developing safety standards and management of space radiation on the polar route”.
Junga Hwang   +5 more
doaj   +1 more source

Modeling of Space Radiation Exposure Estimation Program for Pilots, Crew and Passengers on Commercial Flights [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2014
There has been a rapid increase of the concern on the space radiation effect on pilots, crew and passengers at the commercial aircraft altitude (~ 10 km) recently. It is because domestic airline companies, Korean Air and Asiana Airlines have just begun
Junga Hwang   +5 more
doaj   +1 more source

Electromagnetic dissociation and space radiation [PDF]

open access: yesActa Astronautica, 2007
Relativistic nucleus-nucleus reactions occur mainly through the Strong or Electromagnetic (EM) interactions. Transport codes often neglect the latter. This work shows the importance of including EM interactions for space radiation applications.
Norbury, John W., Maung, Khin Maung
openaire   +2 more sources

A Competing Risk Model of Reliability Analysis for NAND-Based SSDs in Space Application

open access: yesIEEE Access, 2019
This paper develops a competing risk model to simultaneously analyze censored catastrophic failures and nonlinear degradation data of the NAND-based solid-state drives for space application.
Peng Li   +4 more
doaj   +1 more source

Space agency-specific standards for crew dose and risk assessment of ionising radiation exposures for the International Space Station

open access: yesZeitschrift für Medizinische Physik
The Partner Agencies of the International Space Station (ISS) maintain separate career exposure limits and shared Flight Rules that control the ionising radiation exposures that crewmembers can experience due to ambient environments throughout their ...
Mark Shavers   +8 more
doaj   +1 more source

Machine Learning Model Optimization for Antarctic Blowing Snow Height and Optical Depth Diagnosis

open access: yesAtmosphere
Blowing snow is a common phenomenon over the Antarctic ice sheet and sea ice regions, playing a crucial role in the Antarctic climate system. Previous research developed an optimized machine learning (ML) model to diagnose blowing snow occurrence using ...
Surendra Bhatta, Yuekui Yang
doaj   +1 more source

The Space Radiation Environment [PDF]

open access: yes, 2008
The effects of the space radiation environment on spacecraft systems and instruments are significant design considerations for space missions. Astronaut exposure is a serious concern for manned missions.
Bourdarie, Sebastien, Xapsos, Michael A.
core  

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

open access: yesFEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança   +2 more
wiley   +1 more source

Long-Term Effects of Very Low Dose Particle Radiation on Gene Expression in the Heart: Degenerative Disease Risks

open access: yesCells, 2021
Compared to low doses of gamma irradiation (γ-IR), high-charge-and-energy (HZE) particle IR may have different biological response thresholds in cardiac tissue at lower doses, and these effects may be IR type and dose dependent.
Venkata Naga Srikanth Garikipati   +16 more
doaj   +1 more source

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