Results 61 to 70 of about 42,398 (325)

Body mass estimation in paleontology: a review of volumetric techniques

open access: yes, 2016
Body mass is a key parameter for understanding the physiology, biomechanics and ecology of an organism. Within paleontology, body mass is a fundamental prerequisite for many studies considering body size evolution, survivorship patterns and the ...
C. Brassey
semanticscholar   +1 more source

A nação pela pedra: coleções de paleontologia no Brasil, 1836-1844 Petrifying the nation: paleontology collections in Brazil, 1836-1844

open access: yesHistória, Ciências, Saúde: Manguinhos, 2012
A formação e o estudo de coleções de história natural e de paleontologia participaram da instauração da ordem política do Império do Brasil, delineando também uma ordem científica. A simbiose entre ciência e nação encontrou em Peter W.
Paulo Henrique Martinez
doaj   +1 more source

Biological Effects of Stellar Collapse Neutrinos [PDF]

open access: yesPhys.Rev.Lett. 76 (1996) 999-1002, 1995
Massive stars in their final stages of collapse radiate most of their binding energy in the form of MeV neutrinos. The recoil atoms that they produce in elastic scattering off nuclei in organic tissue create radiation damage which is highly effective in the production of irreparable DNA harm, leading to cellular mutation, neoplasia and oncogenesis ...
arxiv   +1 more source

Extending the paleontology–biogeography reciprocity with SDMs: Exploring models and data in reducing fossil taxonomic uncertainty

open access: yesPLoS ONE, 2018
Historically, studies aimed at prospecting and analyzing paleontological and neontological data to investigate species distribution have developed separately. Research at the interface between paleontology and biogeography has shown a unidirectional bias,
A. A. Eduardo   +7 more
semanticscholar   +1 more source

An Assessment of Blended Short Loop Recycled Graphite Electrodes Using X‐Ray Micro‐Computed Tomography

open access: yesAdvanced Energy Materials, EarlyView.
X‐ray micro‐computed tomography is useful for assessing structural and diffusivity changes within short‐loop recycled electrode materials. Delamination via water with and without ultrasonic assistance, influences the structure of the remanufactured electrodes.
Sean Scott   +5 more
wiley   +1 more source

Dinosaurs from the Santonian–Campanian Atlantic coastline substantiate phylogenetic signatures of vicariance in Cretaceous North America

open access: yesRoyal Society Open Science, 2021
During the Cretaceous, diversifications and turnovers affected terrestrial vertebrates experiencing the effects of global geographical change. However, the poor fossil record from the early Late Cretaceous has concealed how dinosaurs and other ...
Chase Doran Brownstein
doaj   +1 more source

Muscle Moment Arm Analyses Applied to Vertebrate Paleontology: A Case Study Using Stegosaurus stenops Marsh, 1887

open access: yesJournal of Vertebrate Paleontology, 2017
The moment arm of a muscle defines its leverage around a given joint. In a clinical setting, the quantification of muscle moment arms is an important means of establishing the ‘healthy’ functioning of a muscle and in identifying and treating ...
C. Brassey, S. Maidment, P. Barrett
semanticscholar   +1 more source

Microbial methods matter: Identifying discrepancies between microbiome denoising pipelines using a leaf biofilm taphonomic dataset

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise The occurrence of different microorganisms on aquatic macrophyte fossils suggests that biofilm microbes may facilitate leaf preservation. Understanding the impact of microorganisms on leaf preservation requires studies on living plants coupled with microbial amplicon sequencing.
Brianne Palmer   +3 more
wiley   +1 more source

A comprehensive illustrated protocol for clearing, mounting, and imaging leaf venation networks

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Leaf venation network architecture can provide insights into plant evolution, ecology, and physiology. Venation networks are typically assessed through histological methods, but existing protocols provide limited guidance on processing large or challenging leaves.
Isabella Niewiadomski   +11 more
wiley   +1 more source

The PteridoPortal: A publicly accessible collection of over three million records of extant and extinct pteridophytes

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Pteridophytes—vascular land plants that disperse by spores—are a powerful system for studying plant evolution, particularly with respect to the impact of abiotic factors on evolutionary trajectories through deep time. However, our ability to use pteridophytes to investigate such questions—or to capitalize on the ecological and ...
Carl J. Rothfels   +67 more
wiley   +1 more source

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