Results 101 to 110 of about 1,256,039 (312)

Revisiting the Jurassic Geomagnetic Reversal recorded in the Lesotho Basalt (Southern Africa)

open access: yes, 2003
We carried out a detailed and continuous paleomagnetic sampling of the reversed to normal geomagnetic transition recorded by some 60 consecutive flow units near the base of the Lesotho Basalt (183  1 Ma).
Camps   +12 more
core   +2 more sources

The local paleoenvironment of Kalavan‐2 based on small‐vertebrate remains and its implications for human‐environment‐dynamics between 60 and 35 ka in the Armenian Highlands

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Kalavan‐2, a high‐altitude (∼1640 m a.s.l.) open‐air site in Armenia, preserves stratified Middle Paleolithic occupations with a rich small‐vertebrate record. Luminescence dating has placed site formation between ~60 and 45 ka, but without independent chronological control of the microvertebrate accumulation.
Dominik L. Rogall   +4 more
wiley   +1 more source

Late-Pleistocene Syngenetic Permafrost in the CRREL Permafrost Tunnel, Fox, Alaska [PDF]

open access: yes, 2008
contributing authors: Bjella, K.L., Bray, M.T., Collins, C.M., Douglas, T.A., Fortier, D., French, H.M., Kanevskiy, M.Z., Shur, Y.L.Late-Pleistocene syngenetic permafrost exposed in the walls and ceiling of the CRREL permafrost tunnel consists of ice-and
French, H.M.   +2 more
core  

Integrating Aegean Last Interglacial faunas into the Mediterranean palaeobiogeographic framework: New evidence from Karpathos (Greece)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT The Last Interglacial (LIG) or Marine Isotope Stage (MIS) 5e, spanning 129 to 116 kyrs ago, is recognised as one of the warmest periods in the Quaternary, with global sea surface temperatures (SSTs) 1°C–2°C higher than today, sea levels 5–10 m above the current level and biogeographical range expansion of specific tropical species into the ...
Christos Psarras   +10 more
wiley   +1 more source

Black Plastic Identification for Sorting and Recycling With Deep‐UV Raman Spectroscopy

open access: yesJournal of Raman Spectroscopy, EarlyView.
We present a deep ultraviolet (DUV) Raman spectrometer for sorting black plastics in recycling. The common identification modality of hyperspectral NIR struggles with black plastics due to strong absorption by the black pigment. By using a 248.6‐nm NeCu laser, we enable stand‐off detection over a conveyor belt while avoiding fluorescence interference ...
Liron Zada, Freek Ariese
wiley   +1 more source

The Adoption and Dissemination of Soil Conservation Technologies Among Sorghum Farmers in Burkina Faso: Perspectives on Innovation, Network, and Risk Aversion

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Soil degradation threatens agricultural productivity across Africa, necessitating effective conservation strategies. However, gaps remain in understanding the mechanisms that drive agricultural technology adoption and dissemination. This study applies the theories of innovation diffusion, social networks, and risk aversion to examine the ...
Guenwoo Lee   +3 more
wiley   +1 more source

Regenerative Polyphenolic Free‐Standing Conductive Film

open access: yesMacromolecular Materials and Engineering, EarlyView.
A rare combination of self‐assembly, spontaneous regeneration, and free‐standing form is achieved from initially non‐conductive polyphenol–amine complexes. The resulting films, assembled at the air/water interface and carbonized in one step, demonstrate flexibility, conductivity, and scalability.
Jun Sung Kim   +4 more
wiley   +1 more source

Impairments on the Construction of a Cosmic Neutrino Detector in a Romanian Salt Mine

open access: yesNatural Sciences, EarlyView.
The modulus of the transfer function of an antenna when boreholed in salt. With red are represented results from the Targu Ocna salt mine and with black‐from Slanic salt mine ABSTRACT Indirect cosmic neutrino detectors utilize dense media to enhance the likelihood of neutrino interactions within the detection volume.
A. M. Badescu
wiley   +1 more source

Home - About - Disclaimer - Privacy