Results 121 to 130 of about 8,201,974 (327)

Early Pleistocene freshwater fish from Dursunlu (Ilgın Basin, south-western Türkiye): Implications for early hominin dispersals out of Africa

open access: yesQuaternary Environments and Humans
Dursunlu, located in the Ilgın Basin (south-western Türkiye), represents one of the most prolific sites to explore early human occupations in Anatolia. This paper describes the lacustrine fish assemblage from this site during the Early Pleistocene (Günz ...
Àngel Blanco-Lapaz   +3 more
doaj   +1 more source

Empirical LCAO parameters for $\pi$ molecular orbitals in planar organic molecules

open access: yes, 2008
We present a parametrization within a simplified LCAO model (a type of Hueckel model) for the description of $\pi$ molecular orbitals in organic molecules containing $\pi$-bonds between carbon, nitrogen, or oxygen atoms with $sp^2$ hybridization, which ...
Hawke, Laurence   +2 more
core   +3 more sources

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

Structure, reactivity and electronic properties of V-doped Co clusters

open access: yes, 2009
Structures, physical and chemical properties of V doped Co$_{13}$ clusters have been studied in detail using density functional theory based first-principles method.
Datta, Soumendu   +3 more
core   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

Rethinking Phylogeny and Ontogeny in Hominin Brain Evolution [PDF]

open access: yes, 2012
Theories of hominin and human cognitive evolution have traditionally focused on the phylogeny of the human brain, and on comparisons of human and primate brains in relation to social or ecological variables.
Coward, Fiona
core  

Almost human: the fossils of early Homo

open access: yesThe FASEB Journal, 2010
The earliest fossils of our genus date to 2.5 ‐ 2.0 million years ago (Ma) in Africa, but are so rare and anatomically limited as to reveal little about the nature of its origin beyond an association with a fluctuating trend towards more open, wetter environments.
openaire   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

open access: yesFEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas   +3 more
wiley   +1 more source

Reconstructing birth in Australopithecus sediba.

open access: yesPLoS ONE, 2019
Hominin birth mechanics have been examined and debated from limited and often fragmentary fossil pelvic material. Some have proposed that birth in the early hominin genus Australopithecus was relatively easy and ape-like, while others have argued for a ...
Natalie M Laudicina   +2 more
doaj   +1 more source

Early Pleistocene hominins in europe: the sites of Barranco León and Fuente Nueva-3 (Orce, Spain) [PDF]

open access: yes, 2016
The Early Pleistocene (Late Villafranchian) sites of Orce, placed in the northeastern sector of the Guadix-Baza Basin (Granada, southeastern Spain), are key to the study of the first human settlements in the European subcontinent.
Espigares, María Patrocinio   +6 more
core  

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