Results 241 to 250 of about 17,862 (290)
Powers That Be: An Adventure in Metaphysics
Philosophical Investigations, EarlyView.ABSTRACT This paper is an investigation into the increasingly popular trend amongst philosophers on the metaphysics of powers, exemplified by the statement: ‘To be real is to possess a power to affect (or to be affected by) other things’. First, I briefly trace the history of this idea (from the Eleatic dialectic of ancient times to present day quantum
David Rozema
wiley +1 more source
On the Naturalistic Grounds of Grounding
Ratio, EarlyView.ABSTRACT This paper examines whether grounding can be naturalized. We adopt a tripartite framework—Ocat (scientific catalogue of existents), Otyp (ontological types), and metaphysics (natures/modal profiles)—and show that classifying as such the relata of putative grounding claims forces a dilemma.
Raoni Arroyo, Jonas R. Becker Arenhart
wiley +1 more source
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Dose‐dependent effects of radiation on cardiac electrophysiology and arrhythmia susceptibility. At low radiation doses (left), increased reactive oxygen species (ROS) initiate an ROS–Ca2+ positive feedback loop involving calcium/calmodulin‐dependent protein kinase II (CaMKII) activation, enhanced L‐type Ca2+ current (ICaL ...
Hannah M. Zukowski, Colleen E. Clancy
wiley +1 more source
Diffraction in neutron imaging—A review [PDF]
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018 Abstract Neutron imaging is a highly successful experimental technique ever since adequate neutron sources were available. In general, neutron imaging is performed with a wide wavelength spectrum for best flux conditions in transmission geometry. Neutrons provide outstanding features in the penetration of many structural materials, which often makes ...
Robin Woracek +2 more
exaly +5 more sources
A neutron optical periscope used for neutron imaging
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2009 A standard neutron guide is ill suited for neutron imaging, because reflections in the guide destroy the collimation of the neutron beam and let the cross-section of the neutron guide act as a divergent area source. Good neutron imaging installations use a flight tube instead, but with direct sight they also have a large background of gamma radiation ...
Burkhard Schillinger +6 more
openaire +2 more sources
2009 IEEE Conference on Technologies for Homeland Security, 2009 We describe the Neutron Imaging Camera (NIC) being developed for DTRA applications by NASA/GSFC and NSWC/CD. The NIC is based on the Three-Dimensional Track Imager (3-DTI) technology developed at GSFC for gamma-ray astrophysics applications. The 3-DTI, a large volume time-projection chamber, provides accurate ∼0.4 mm resolution, 3-D tracking of charged
Georgia A. de Nolfo +4 more
openaire +3 more sources