Results 221 to 230 of about 1,302,044 (285)

An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)

open access: yesThe Anatomical Record, EarlyView.
Abstract The ray‐finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic knowledge of ray‐finned fishes between paleontologists working on extinct animals and neontologists studying extant species has obscured the ...
Jack Stack
wiley   +1 more source

Over the edge: Empirical evidence for the cliff‐edge model of obstetric selection

open access: yesThe Anatomical Record, EarlyView.
Abstract The cliff‐edge model of obstetric selection maintains that larger neonates and smaller birth canals confer a positive selective advantage until labor becomes obstructed and vaginal delivery is no longer possible, eliciting an abrupt reduction in fitness.
Laura M. Watson   +6 more
wiley   +1 more source

Monte Carlo simulations of geometric deformation of Harrison-Anderson-Mick applicators used in intraoperative radiation therapy. [PDF]

open access: yesJ Appl Clin Med Phys
Insley B   +9 more
europepmc   +1 more source

Monte Carlo analysis of energy deposition and X-ray fluence in cylindrical anode systems. [PDF]

open access: yesJ Appl Clin Med Phys
Alharbi MKM   +4 more
europepmc   +1 more source

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