Results 121 to 130 of about 1,126,883 (314)

The Evolution of Hot Flow Anomalies in Martian Space Environment

open access: yesGeophysical Research Letters
Hot Flow Anomalies (HFAs) are transient foreshock structures generated by solar wind discontinuity‐bow shock interactions, with their evolution only confirmed near Earth.
Heying Wang   +9 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Martian Ionospheric Cold Hydrogen Ion Escape at Solar Maximum: First Observations

open access: yesThe Astrophysical Journal
The water escape from Mars to space could be in the form of hydrogen and oxygen ions as driven by solar wind–Mars interactions. Although oxygen ion escape has been extensively investigated, the H ^+ escape rate was measured only at solar minimum.
Qi Xu   +10 more
doaj   +1 more source

Research on Removing Thin Cloud Interference in Solar Flare Monitoring with SMAT-Configured Telescopes

open access: yesUniverse
The precise monitoring of solar flares holds significant scientific value for space mission safety, communication security, and space environment forecasting.
Hongyan Li   +3 more
doaj   +1 more source

Do greener neighborhoods mean slimmer people? : evidence from The 45 and Up Study

open access: yes, 2013
: The purpose of this study was to quantify the relationship and pathways linking proximity to green space and weight status among a sample of Australians aged 45 years and older.
Astell-Burt, Thomas (R16977)   +2 more
core  

The story of space activities I.

open access: yesLélektan és hadviselés
For all countries, achieving technical excellence is a fundamental condition of space exploration. At the beginning of the space era, this was only a rivalry between the US and the Soviet Union. Today, many countries have the technical maturity to be able to develop an independent space programme.
openaire   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

open access: yesFEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada   +5 more
wiley   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

A Physics-informed Deep Learning Model for the Magnetic Classification of Solar Active Regions

open access: yesThe Astrophysical Journal Supplement Series
Solar active regions (ARs) are the source of solar eruptive events such as flares. The morphology of sunspots within ARs is closely related to solar eruptive activity.
Ming Li   +5 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy