Results 71 to 80 of about 11,597 (201)
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.Abstract Fe‐oxidizing microorganisms in deep‐sea hydrothermal vent environments are often used as analogs for primordial life on Earth. In fact, Earth's oldest purported microfossils are preserved as hematite filaments in a jasper rock dated between 4,160 and 4,280 million years and are thought to have originated in a seafloor hydrothermal environment.
Dominic Papineau +8 more
wiley +1 more source
Degree and class of caustics by reflection for a generic source [PDF]
, 2013 We are interested in the study of caustics by reflection of irreducible algebraic planar curves (in the complex projective plane). We prove the birationality of the caustic map (for a generic light position).
Josse, Alfrederic, Pene, Francoise
core +5 more sources
MethodsX, 2019 This paper presents the Actor in 4 dimensions (A4D) model as a complementary tool to the Social-ecological systems framework (SESF) in order to better integrate individual and groups’ representations into local environmental governance analysis.
Raphaëlle Dancette, Léa Sebastien
doaj +1 more source
Animal Models and Experimental Medicine, Volume 8, Issue 11, Page 1983-1996, November 2025.The NF‐hHRAS mouse model was generated through Chr15 E1 locus‐targeted integration of a 21 kb multicopy HRAS gene cluster. The NF‐hHRAS model demostrated tissue‐specific expression of human HRAS across multiple organs and low spontaneous tumorigenesis.
Susu Liu +12 more
wiley +1 more source
Exceptional preservation of eye structure in arthropod visual predators from the Middle Jurassic
Nature Communications, 2016 Understanding how ancient animals perceived their environment is difficult due to a lack of fossilized eye structures. Here, the authors reconstruct the compound eye of a 160-million-year old thylacocephalan arthropod, Dollocaris, finding evidence of ...
Jean Vannier +4 more
doaj +1 more source
Gravity Modeling of Lunar Lava Tubes: Insights From a Terrestrial Analog
Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.Abstract The exploration of lunar lava tubes can address challenges of human habitation on the Moon by identifying natural shelters against radiation, temperature extremes, and micrometeoroid impacts. This study shows the feasibility of detecting lunar lava tubes with gravimetry using Ape Cave in Washington State, USA, as a terrestrial analog. Ape Cave'
Sarai Montañez Muñoz +4 more
wiley +1 more source
Data Curation Standards and Social Science Occupational Information Resources
International Journal of Digital Curation, 2008 Occupational information resources - data about the characteristics of different occupational positions - are widely used in the social sciences, across a range of disciplines and international contexts.
Paul Lambert +5 more
doaj +8 more sources
Organic Horticultural Seed Trials in Wales [PDF]
, 2004 Under the organic standards, producers are required to use organic seed. However, a derogation can be obtained from the appropriate certification body that allows the use of (untreated) non organic seed where appropriate organic material is not available.
Hitchings, Roger, Robertshaw, Paul
core
Anais da Academia Brasileira de CiênciasThe thorough redox alteration of a lava flow is an undescribed feature in intraplate basaltic provinces. The Early Cretaceous (134.5 Ma) Paraná Province displays that alteration in the major Muralha Flow.
LÉO A. HARTMANN +2 more
doaj +1 more source
Nature Communications, 2020 Sedimentary DNA can be used to infer how organisms responded to changing environmental conditions over millennia. Here, the authors use sedimentary DNA of micro-eukaryotes in low-elevation (human-impacted) and high-elevation (more pristine) lakes to show
François Keck +6 more
doaj +1 more source