Results 41 to 50 of about 38,987 (285)

Post‐Processing Probabilistic Forecasts of the Solar Wind by Data Mining Similar Scenarios

open access: yesSpace Weather
The solar wind speed at Earth is one of the most important parameters regarding the effects of space weather on society. Thus far, most approaches for predicting the solar wind speed produce a single‐value time series without uncertainty, or utilize ...
Daniel E. daSilva   +3 more
doaj   +1 more source

Clinical Nutritional Study of Minimum Protein and Caloric Requirements for Man. Annual Report, Sep. 1965 - Sep. 1966 [PDF]

open access: yes, 1966
Minimum protein and caloric requirements for prolonged manned spaceflight and space ...
Calloway, D. H., Margen, S.
core   +1 more source

Light‑Driven Propulsion of Graphene Aerogels in Microgravity

open access: yesAdvanced Science, EarlyView.
Ultralight graphene aerogels convert laser light into thrust. Parabolic‐flight experiments directly compare their motion in microgravity and at 1 g, revealing order‐of‐magnitude enhancements in distance, velocity, and transient thrust when weight and friction are removed (∼50 times enhancement).
Omnia Khattab   +10 more
wiley   +1 more source

Autonomous Detection of Particles and Tracks in Optical Images

open access: yesEarth and Space Science, 2020
When optical navigation images acquired by the OSIRIS‐REx (Origins, Spectral Interpretation, Resource Identification, and Security‐Regolith Explorer) mission revealed the periodic ejection of particles from asteroid (101955) Bennu, it became a mission ...
Andrew J. Liounis   +14 more
doaj   +1 more source

Spaceflight enhances cell aggregation and random budding in Candida albicans. [PDF]

open access: yesPLoS ONE, 2013
This study presents the first global transcriptional profiling and phenotypic characterization of the major human opportunistic fungal pathogen, Candida albicans, grown in spaceflight conditions. Microarray analysis revealed that C. albicans subjected to
Aurélie Crabbé   +14 more
doaj   +1 more source

Towards the Final Frontier: Using Strategic Communication Activities to Engage the Latent Public as a Key Stakeholder in a Corporate Mission [PDF]

open access: yes, 2018
Private corporations that do not normally interact with, nor regularly communicate with, the public often do not perceive the public as a relevant or active stakeholder.
D\u27Urso, Scott C.
core   +1 more source

Limitations in Predicting the Space Radiation Health Risk for Exploration Astronauts [PDF]

open access: yes, 2018
Despite years of research, understanding of the space radiation environment and the risk it poses to long-duration astronauts remains limited. There is a disparity between research results and observed empirical effects seen in human astronaut crews ...
Auñón-Chancellor, Serena M.   +6 more
core   +4 more sources

The ageing holobiont: crosstalk between telomere dynamics, oxidative stress and the gut microbiome

open access: yesBiological Reviews, EarlyView.
ABSTRACT The gut tissue is at the frontline of early onset of ageing. It exhibits high cell turnover rates and rapid telomere shortening, which can have systemic effects on the developing or senescing organism. We conducted a literature review of studies on the crosstalk between telomere length dynamics, telomerase activity, oxidative stress, and gut ...
Michael L. Pepke   +2 more
wiley   +1 more source

Preparation and properties of polyacrylonitrile pre-oxidized fiber/silicone rubber ablation composites

open access: yesCailiao gongcheng
Polyacrylonitrile pre-oxidized fiber(PANOF)is an emerging flame retardant material with low cost and high performance,showing a promising application potential as thermal protection materials in the aerospace field.Pretreated PANOF(t-PANOF)was obtained ...
YANG Rui   +5 more
doaj   +1 more source

Development of NMP‐001, A Nitromethane‐Based Green Propellant

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT This paper discusses the development of a model monopropellant that is aimed at exploring the applicability of nitromethane‐based propellants as an alternative to hydrazine. This approach addresses the challenges faced by HAN‐, ADN‐based propulsion by being more cost‐effective while providing similar performance figures.
Maxim Kurilov   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy