Results 81 to 90 of about 24,316 (300)
Dielectric Elastomer Actuators as Safe and Effective Tools for Mechanostimulation of Human Cells
Advanced Intelligent Systems, EarlyView.Replicating physiological forces is crucial for realistic cell models. Dielectric elastomer actuators (DEAs) offer a soft alternative, though their high voltages raised toxicity concerns. We demonstrate that DEA stimulation causes no cell damage, cell death or cell‐cycle disruption, while activating mechanosensitive responses.
Simon Holzer +6 more
wiley +1 more source
Photoluminescence and Cathodoluminescence of the Solid Cometary Substance
Open Astronomy, 2019 We have proposed that solar ultraviolet and corpuscular radiations may excite photoluminescence and cathodoluminescence of the solid cometary substance including mineral halos of comets.
Simonia Irakli, Gucsik Arnold
doaj +1 more source
American Journal of Botany, EarlyView.Abstract Premise The modern distribution of the southern cypresses, Callitroideae (Cupressaceae), reflects a classic Gondwanan distribution. The initial diversification of Callitroideae is estimated to have occurred during the Cretaceous, yet fossils from this period are rare, hampering our understanding of its early evolutionary history.
Kelly C. Pfeiler +5 more
wiley +1 more source
“Stars Falling to Earth”—Mental Models of Comets and Meteors
Education SciencesThe present study examines students’ conceptions of comets and meteors using qualitative research methods. A total of 35 semi-structured interviews were conducted with students in grades 7 and 9 in Germany, aiming to gain a richer understanding of how ...
Malte S. Ubben +2 more
doaj +1 more source
Comets, interstellar clouds and star clusters [PDF]
, 1976 The association of comets with star formation in clusters is elaborated. This hypothesis is also used to explain origin and evaluation of the Oort cloud, the composition of comets, and relationships between cometary and interstellar ...
Donn, B.
core
Journal of Applied Polymer Science, EarlyView.Driven by the need for more sustainable materials in the laminate industry, poly(glycerol citrate) was introduced as a bio‐based modifier that significantly altered the cure kinetics and structural evolution of melamine–formaldehyde resins. Correlated FTIR, DSC, TGA, and rheological analyses revealed accelerated network formation, enabling lower ...
Martina Duller +3 more
wiley +1 more source
Brightness Behavior of Distant Oort Cloud Comets
The Planetary Science JournalDynamically new comets provide important insights into the conditions of the presolar nebula and its evolution, as they are believed to have experienced minimal solar heating before their discovery.
Carrie E. Holt +17 more
doaj +1 more source
The Anatomical Record, EarlyView.Abstract The vertebrate skull is composed of bones derived from neural crest cells and mesoderm. The evolutionary capacity of the skull has been linked, in part, to the emergence of neural crest cells; however, this increased capacity for evolutionary change requires that variation within neural crest‐ and mesoderm‐derived bones remains partly ...
Alyssa C. Moore +5 more
wiley +1 more source
Point-of-care chest ultrasound in the Neonatal Intensive Care Unit
Journal of Pediatric and Neonatal Individualized Medicine, 2013 Chest ultrasound is a useful diagnostic tool in adult emergency medicine. Echography does not generate a clear image of the lung but is able to generate artifacts that are combined in disease-specific profiles.
Francesco Raimondi +7 more
doaj +1 more source