Results 161 to 170 of about 33,047 (316)

Giants in the cold: Morphological evidence for vascular heat retention in the viscera but not the skeletal muscle of the basking shark (Cetorhinus maximus)

open access: yesJournal of Fish Biology, EarlyView.
Abstract Fewer than 50 of the over 30,000 extant species of fishes have developed anatomical specializations facilitating endothermy in specific body regions. The plankton‐feeding basking shark (Cetorhinus maximus), traditionally classified as an ectotherm, was recently shown to have regionally endothermic traits such as centralized red muscle (RM ...
C. Antonia Klöcker   +9 more
wiley   +1 more source

Viton Rubber Sealing Diaphragm Coupling for Pump Seal [PDF]

open access: bronze, 2011
Christopher Compeau   +2 more
openalex  

Sleep in neurodegenerative diseases: A focus on melatonin, melanin‐concentrating hormone and orexin

open access: yesJournal of Neuroendocrinology, EarlyView.
Abstract Sleep and circadian rest‐activity rhythm alterations are recognised as inherent clinical features of various neurodegenerative diseases. Traditionally viewed as secondary manifestations of neurodegeneration, recent studies have revealed that disruptions in circadian rhythm and sleep–wake cycles can precede clinical symptoms and significantly ...
Simon J. Guillot   +3 more
wiley   +1 more source

Almost billfish: convergent longirostry, micro‐dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy

open access: yesJournal of Anatomy, EarlyView.
A fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Giovanni Serafini   +5 more
wiley   +1 more source

Emergency relief venting of the infrared telescope liquid helium dewar [PDF]

open access: yes
An analysis is made of the emergency relief venting of the liquid helium dewar of the Spacelab 2 infrared telescope experiment in the event of a massive failure of the dewar guard vacuum. Such a failure, resulting from a major accident, could cause rapid
Urban, E. W.
core   +1 more source

Digital twin with uncertainty‐informed deep learning for prompt quantitative risk assessment of deep excavation

open access: yesComputer-Aided Civil and Infrastructure Engineering, EarlyView.
Abstract Deep excavation projects are inherently fraught with significant risks due to complex geological conditions, intricate construction processes, and uncertain surrounding environments. This study proposes a novel digital twin‐driven framework that integrates the physical excavation process with a virtual digital model to enable prompt and closed‐
Xiong Wang, Yue Pan, Jin‐Jian Chen
wiley   +1 more source

A novel high-performance wide-range vacuum sensor based on a weak-coupling resonator. [PDF]

open access: yesMicrosyst Nanoeng
Qin J   +7 more
europepmc   +1 more source

Nitrite supplementation alleviates cerebrovascular dysfunction in chronically stressed mice, but cognitive decline remains

open access: yesExperimental Physiology, EarlyView.
Abstract This study aimed to determine whether sodium nitrite supplementation prevented chronic stress‐induced cerebrovascular dysfunction and cognitive decline. We hypothesize that nitrite supplementation will prevent the oxidative environment and cerebrovascular dysfunction associated with chronic stress and maintain cognitive health.
Emily Burrage   +10 more
wiley   +1 more source

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