Results 11 to 20 of about 42,262 (295)

Evidence for avian intrathoracic air sacs in a new predatory dinosaur from Argentina.

PLoS ONE, 2008
BackgroundLiving birds possess a unique heterogeneous pulmonary system composed of a rigid, dorsally-anchored lung and several compliant air sacs that operate as bellows, driving inspired air through the lung.
Paul C Sereno, Ricardo N Martinez, Jeffrey A Wilson, David J Varricchio, Oscar A Alcober, Hans C E Larsson   +5 more
doaj   +3 more sources

Myoblast cytonemes mediate Wg signaling from the wing imaginal disc and Delta-Notch signaling to the air sac primordium

eLife, 2015
The flight muscles, dorsal air sacs, wing blades, and thoracic cuticle of the Drosophila adult function in concert, and their progenitor cells develop together in the wing imaginal disc.
Hai Huang, Thomas B Kornberg
doaj   +2 more sources

Usefulness of combining computed tomography and air sac fluid examination to rule out aspergillosis: case study in two gentoo penguins (Pygoscelis papua) with respiratory clinical signs. [PDF]

J Vet Med Sci
Matsumoto N, Itoh M, Toyotome T, Hagino K, Neo S, Yamada K.   +5 more
europepmc   +3 more sources

Evidence for bird‐like air sacs in saurischian dinosaurs [PDF]

Journal of Experimental Zoology Part A: Ecological Genetics and Physiology, 2009
AbstractAmong extant tetrapods, pneumatic postcranial bones are only present in birds, and they are osteological correlates of the diverticular lungs and pulmonary air sacs. The presence of postcranial pneumaticity in sauropod and theropod dinosaurs suggests that some form of air sac system was also present in the dinosaurian ancestors of birds.
Matt Wedel
openaire   +3 more sources

The Air Sac Primordium of Drosophila: A Model for Invasive Development. [PDF]

Int J Mol Sci, 2018
Powers N, Srivastava A.
europepmc   +3 more sources

Rethinking Hominin Air Sac Loss in Light of Phylogenetically Meaningful Evidence. [PDF]

Evol Anthropol
Ekström AG, Karakostis FA, Snyder WD, Moran S.   +3 more
europepmc   +2 more sources

Studies on “Air-Sac” Infection in Poultry [PDF]

Poultry Science, 1959
R.M. Smibert, M. Forbes, J.E. Faber, A.R. Gabuten, H.M. DeVolt   +4 more
  +5 more sources

Field study on human thermal comfort and indoor air quality in university dormitory buildings [PDF]

E3S Web of Conferences, 2022
Field studies on the environmental conditions and occupant thermal comfort were carried in air-conditioned buildings and no air-conditioned building in Xi’an, China.
Zhao Shengkai, Yang Liu, Gao Siru, Zhai Yongchao   +3 more
doaj   +1 more source

Variation in air sac morphology and postcranial skeletal pneumatization patterns in the African grey parrot. [PDF]

J Anat
Lawson AB, Martinez A, Hedrick BP, Echols MS, Schachner ER.   +4 more
europepmc   +3 more sources

Integrating the living wall with the split air conditioner towards indoor heating environment improvement in winter

Case Studies in Thermal Engineering, 2023
Employing split air conditioners (SAC) for indoor heating is common, but the poor air quality usually occurs due to lack of fresh air and low relative humidity in winter.
Nan Ding, Fudan Liu, Feng Pang, Jingyu Su, Lianyu Yan, Xi Meng   +5 more
doaj   +1 more source