Results 41 to 50 of about 642,648 (176)

Concurrent uncertainties and investments: Offset effect of Brexit and COVID‐19 on SME growth

open access: yesEuropean Management Review, EarlyView.
Abstract This study investigates the impact of uncertainty driven by dual crises, regulatory/institutional uncertainty (illustrated by Brexit) and market/operational uncertainty (illustrated by the COVID‐19 pandemic), on the growth trajectories of SMEs. Using Real Options Theory as a guiding framework, hypotheses are developed to examine how investment
Karolis Matikonis, Byron Graham
wiley   +1 more source

Scaling temporal resolution from mice to humans: Challenges and innovations in preclinical imaging of translational models

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Temporal scaling physiology differs significantly between mice and humans. Mice have higher metabolism, heart and respiratory rate, as well as faster blood flow rates, brain activity and physiological dynamics over time. These differences influence the temporal resolution needed in preclinical imaging of mouse models to ...
Sara Gargiulo, Matteo Gramanzini
wiley   +1 more source

Injection Process of Pickup Ion Acceleration at an Oblique Heliospheric Termination Shock

open access: yesThe Astrophysical Journal Letters
The injection process of pickup ion acceleration at a heliospheric termination shock is investigated. Using two-dimensional fully kinetic particle-in-cell simulation, accelerated pickup ions are self-consistently reproduced by tracking long time ...
Shuichi Matsukiyo, Yosuke Matsumoto
doaj   +1 more source

Experimental methods in chemical engineering: Magnetometry

open access: yesThe Canadian Journal of Chemical Engineering, Volume 104, Issue 10, Page 5176-5188, October 2026.
Abstract Magnetometry is a non‐invasive technique to characterize the behaviour of magnetic materials of which the most common contain Fe, Co, and Ni. Vibrating sample magnetometers (VSMs) vibrate samples at a fixed frequency in a static, homogeneous magnetic field to induce a voltage in pick up coils according to Faraday's law of induction.
Michael Claeys   +3 more
wiley   +1 more source

The acceleration of pickup ions at shock waves: Test particle-mesh simulations

open access: yes, 1998
A mechanism for the acceleration of pickup ions by repeated reflection from the electrostatic cross-shock potential of a quasi-perpendicular shock was proposed independently by Zank et al. [1996b] and Lee et al. [1996].
Zank, G. P.   +2 more
core   +1 more source

Heliospheric and Interstellar Phenomena Deduced From Pickup ion Observations [PDF]

open access: yes, 2001
Pickup ions, created by ionization of slow moving atoms and molecules well inside the heliosphere, provide us with a new tool to probe remote regions in and beyond the heliosphere and to study injection and acceleration processes in the solar wind ...
Gloeckler, George, Geiss, Johannes
core   +1 more source

Reconfiguration of Mercury's Exosphere During Strong Space Weather Events

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Mercury is exposed to various space weathering processes, which alter the surface and cause emission of atoms and molecules into the exosphere. The exosphere thus allows remote insights into the surface composition and erosion processes, with the emission of refractory elements such as Ca and Mg typically being dominated by micrometeoroid ...
P. S. Szabo   +5 more
wiley   +1 more source

Study of pickup of cometary ions in turbulent solar winds [PDF]

open access: yes, 1987
The influence of moderately strong magnetic disturbances on the ion pickup process near a comet is studied by a test-particle method. The research is motivated by recent observations with ICE and Giotto at Giacobini-Zinner and Halley.
Wu, C. S., Price, C. P.
core  

Physical origin of pickup currents [PDF]

open access: yesAnnales Geophysicae, 2016
So-called pickup electric currents, associated with the ionization of neutral particles in the presence of a flowing plasma, are conventionally described as produced directly by differential displacement of ions and electrons as the result of ...
V. M. Vasyliūnas
doaj   +1 more source

Rolling‐Enabled Nonplanar Heterogeneous Integration for Polarization‐Diverse Nanolasers on Silicon Photonics

open access: yesNanophotonics, Volume 15, Issue 17, 11 September 2026.
Rolling‐enabled transfer printing introduces mechanical orientation as a new degree of freedom for heterogeneous silicon photonics. A conventional TE‐like photonic‐crystal nanobeam laser is mechanically rotated by 90° to selectively couple with the TM‐like mode of a silicon waveguide, enabling polarization‐diverse functionality without redesigning the ...
Byoung Jun Park   +8 more
wiley   +1 more source

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