Results 121 to 130 of about 1,668 (267)
Unravelling friction anisotropy by atomic force microscopy
Journal of Microscopy, EarlyView.Abstract Friction plays a crucial role in both natural phenomena, from the flow of blood cells to earthquakes, and technological applications, from car engines to wind turbines. One of the most fundamental aspects of tribology is friction anisotropy, that is, the dependence of the friction force vector on the direction of sliding.
Clodomiro Cafolla, Marcello Campione
wiley +1 more source
A new species of frog (Strabomantidae: Pristimantis) from Peru with comments on its ectoparasites (Acari: Trombiculidae) [PDF]
, 2012 In South America, frogs of the genus Pristimantis are diverse and can be found from lowland forests to elevations of about 4000 m in the Andes. The 444 known species of Pristimantis belong to 16 species groups.
Brus, Alan W
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Journal of Anatomy, EarlyView.Geckos and anoline iguanid lizards are well‐known for their possession of adhesive toepads, which are generally regarded as being convergent structures. We show that the anatomical configuration of the foot in these two lineages differs markedly and that these differences likely relate to the contrasing ways they deploy their adhesive systems and ...
Anthony P. Russell +2 more
wiley +1 more source
Ball and socket ankle joint in connection with bilateral tarsal synostosis in a boy with congenital absence of the portal vain: a novel malformation complex [PDF]
, 2008 Shahin Zandieh +5 more
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Journal of Anatomy, EarlyView.This study investigated how variations in the shape of the astragalus affect tarsal joint behavior, using CT scans. In artiodactyls with a double‐pulley astragalus, the calcaneus shifted plantarly during plantarflexion. This suggests the movement increases hindlimb functional length and contributes to enhanced running speed.
Sei‐ichiro Takeda +3 more
wiley +1 more source
Postcranial anatomy of the Miocene hippopotamoids of Toros‐Menalla, Chad
Journal of Anatomy, EarlyView.We establish a framework for the identification of postcranial remains in hippopotamoids by describing and comparing for the first time two late Miocene hippopotamoids from Toros‐Menalla, Chad (Hexaprotodon garyam, an early hippopotamid, and Libycosaurus bahri, the last African anthracothere) with the common hippopotamus.
Lorenzo Scribano +4 more
wiley +1 more source
The Economic Costs of the War in Iraq [PDF]
Government policies are routinely subjected to rigorous cost analyses. Yet one of today’s most controversial and expensive policies—the ongoing war in Iraq—has not been. The $212 billion allocated by the U.S. Treasury has been widely reported.
Kosec, Katrina, Wallsten, Scott
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Spartan Daily, March 29, 1990 [PDF]
, 1990 Volume 94, Issue 44https://scholarworks.sjsu.edu/spartandaily/7974/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
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Functional morphology of trabecular bone in the calcaneus of African apes
Journal of Anatomy, EarlyView.Pan exhibits significantly higher calcaneal tuberosity trabecular thickness (Tb.Th) and bone volume fraction (BV/TV) than Gorilla, potentially reflecting higher triceps surae forces for vertical climbing. Both taxa have significantly higher Tb.Th and BV/TV in the anterior calcaneus; the difference is exaggerated in Gorilla, potentially reflecting ...
Christine M. Harper, Biren A. Patel
wiley +1 more source
The posterolateral fluoroscopy-guided injection technique into the posterior subtalar joint: description of the procedure and pilot study on patient outcomes [PDF]
, 2018 Objective: To describe a posterolateral fluoroscopy-guided injection technique into the posterior subtalar joint and to report patient outcomes 1month post-injection.
Brunner, Florian +4 more
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