Results 41 to 50 of about 48,129 (293)

Infinitely many two-variable generalisations of the Alexander-Conway polynomial [PDF]

open access: yes, 2005
We show that the Alexander-Conway polynomial Delta is obtainable via a particular one-variable reduction of each two-variable Links-Gould invariant LG^{m,1}, where m is a positive integer.
Abdesselam   +9 more
core   +3 more sources

Pre-LGM Northern Hemisphere ice sheet topography [PDF]

open access: yesClimate of the Past, 2013
Abstract. We here reconstruct the paleotopography of Northern Hemisphere ice sheets during the glacial maxima of marine isotope stages (MIS) 5b and 4.We employ a combined approach, blending geologically based reconstruction and numerical modeling, to arrive at probable ice sheet extents and topographies for each of these two time slices.
J. Kleman   +4 more
openaire   +3 more sources

New Last Glacial Maximum ice thickness constraints for the Weddell Sea Embayment, Antarctica [PDF]

open access: yesThe Cryosphere, 2019
We describe new Last Glacial Maximum (LGM) ice thickness constraints for three locations spanning the Weddell Sea Embayment (WSE) of Antarctica. Samples collected from the Shackleton Range, Pensacola Mountains, and the Lassiter Coast constrain the LGM ...
K. A. Nichols   +5 more
doaj   +1 more source

Marine forests of the Mediterranean-Atlantic Cystoseira tamariscifolia complex show a southern Iberian genetic hotspot and no reproductive isolation in parapatry [PDF]

open access: yes, 2018
Climate-driven range-shifts create evolutionary opportunities for allopatric divergence and subsequent contact, leading to genetic structuration and hybrid zones.
Airoldi, Laura   +12 more
core   +3 more sources

The impact of climate change on the structure of Pleistocene mammoth steppe food webs

open access: yes, 2013
Species interactions shape predator-prey networks, impacting community structure and, potentially, ecological dynamics. It is likely that global climatic perturbations that occur over long periods of time have a significant impact on species interactions
Bocherens, Herve   +3 more
core   +1 more source

Pattern of extinction of the woolly mammoth in Beringia. [PDF]

open access: yes, 2012
Extinction of the woolly mammoth in Beringia has long been subject to research and speculation. Here we use a new geo-referenced database of radiocarbon-dated evidence to show that mammoths were abundant in the open-habitat of Marine Isotope Stage 3 (∼45-
Beilman, DW   +7 more
core   +1 more source

Climate Conditions on the Tibetan Plateau During the Last Glacial Maximum and Implications for the Survival of Paleolithic Foragers

open access: yesFrontiers in Earth Science, 2020
Environmental conditions on the Tibetan Plateau (TP) during the last glacial maximum (LGM) are poorly known. Existing studies of environmental proxies and climate model simulations are contradictory, with interpretations varying between cold-dry and cold-
Xiangjun Liu   +6 more
doaj   +1 more source

LGM AIS from PMIP3 repository

open access: yes, 2020
Simulated Antarctic Ice Sheet outputs for the scientific article "Exploring the impact of atmospheric forcing and basal boundary conditions conditions on the simulation of the Antarctic ice sheet at the Last Glacial Maximum" (TCD).
Blasco, Javier   +3 more
openaire   +1 more source

Zwitterionic Self‐Assembled Monolayer for Simultaneous Noise Suppression and Hole Extraction in High‐Performance Near‐Infrared Organic Photodetectors

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a new hole transporting material (HTM) mechanism for self‐assembled monolayers in near‐infrared organic photodetectors. The formation of zwitterions induces a strong electric field that significantly increases the work function of HTM‐coated indium tin oxide substrates. The devices exhibit low dark current and noise, along with high
Jiyoung Shin   +9 more
wiley   +1 more source

Effect of manufacturing parameters on the hardness of electron-beam melted maraging steel: An experimental study [PDF]

open access: yesMATEC Web of Conferences
Maraging steels are commonly used in industries that require high precision due to their excellent mechanical properties, including high strength, toughness, formability, weldability, dimensional accuracy, and formability.
Chaabene Ameni   +4 more
doaj   +1 more source

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