Pelecanis Molinae Gray

Feeding ecology of the Green-cheeked parakeet (Pyrrhura molinae) in dry forests in western Brazil.

The genus Pyrrhura includes small to medium-sized parakeets, which inhabit both low and dry alongside tall rainforests, mainly in South America. Pyrrhura molinae is still common, year round, in the markedly seasonal forests of western Brazil. This parakeet, as well as most Neotropical parrots, continues to be poorly understood. Hence, in the present study I examined their foraging ecology both ...

Delamination Wear Mechanism in Gray Cast Irons

An investigation of the friction and sliding wear of gray cast iron against chromium plated cast irons was carried out on a newly constructed reciprocating friction and wear tester. The tests were the first to be done on the test rig under dry conditions and at the speed of 170 cm/min, and variable loads of 20-260 N for a duration of 15 min. to 3 hours. The gray cast iron surfaces worn by a pro...

Antioxidant and Vasodilator Activity of Ugni molinae Turcz. (Murtilla) and Its Modulatory Mechanism in Hypotensive Response

Hypertension is a systemic condition with high morbidity and mortality rates worldwide, which poses an increased risk for cardiovascular diseases. In this study, we demonstrated the antioxidant and vasodilator activity of Ugni molinae Turcz. (Murtilla) fruit, a berry native to Chile and proposed models to explain its modulatory mechanism in hypotensive response. Murtilla fruits were cultivated ...

Aging and dementia: more gray hair and less gray matter.

A Nematic LCD with Submillisecond Gray-to-gray Response Time

We propose a triode structure for achieving submillisecond grayto-gray response time in a double fringing-field-switching (DFFS) cell. The bright and dark states are obtained by applying a fringing field and a vertical field, respectively. The simulated averaged grayscale rise time is 793 μs and decay time is 478 μs. This triode DFFS mode enables conventional nematic LCDs for color sequential d...