Results 131 to 140 of about 3,790 (296)
A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions
X-Ray Spectrometry, EarlyView.ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri +14 more
wiley +1 more source
Geophysical Monograph Series, Page 263-304., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside +3 more
wiley +1 more source
Uncovering hidden bias in neutron diffraction residual strain measurements
Journal of Applied Crystallography, EarlyView.This work demonstrates that diffraction‐based residual strain calculations and uncertainty estimates depend on how grain populations are sub‐sampled, with important implications for interpreting residual stresses in heterogeneous materials with fine‐scale microstructure and strain gradients.When calculating residual strain via neutron or X‐ray ...
Cole Franz +4 more
wiley +1 more source
The Astrophysical JournalWe present molecular gas-dynamical mass measurements of the central black holes in the giant elliptical galaxies NGC 4786 and NGC 5193, based on CO (2−1) observations from the Atacama Large Millimeter/submillimeter Array (ALMA) and Hubble Space Telescope
Kyle M. Kabasares +12 more
doaj +1 more source
X‐ray fluorescence microscopy exposure estimates using a single excitation energy
Journal of Synchrotron Radiation, EarlyView.We present calculations on the number of illuminating photons per pixel required for elemental detection using X‐ray fluorescence, even with far‐from‐threshold excitation.Scanning fluorescence X‐ray microscopy is widely used for quantitative mapping of elemental concentrations, including in studies of essential but low‐concentration metals in cells ...
Benjamin Roter +3 more
wiley +1 more source
The Astrophysical JournalWe present multiwavelength observations of the Swift short γ -ray burst GRB 231117A, localized to an underlying galaxy at redshift z = 0.257 at a small projected offset (∼2 kpc). We uncover long-lived X-ray Chandra X-ray Observatory and radio/millimeter (
Genevieve Schroeder +30 more
doaj +1 more source
Ecological Entomology, EarlyView.Lepidoptera are highly sensitive to changes in their surroundings, making them excellent indicators of ecosystem health; however, surveying adult butterflies of certain species presents challenges. Nocturnal surveying of larvae and pupae using ultraviolet light (UV) is gaining popularity as a simple, inexpensive, and non‐invasive method.
Gareth J. Tilley +9 more
wiley +1 more source
High-dimensional Statistical Analysis and Its Application to an ALMA Map of NGC 253
The Astrophysical Journal Supplement SeriesIn astronomy, if we denote the dimension of data as d and the number of samples as n , we often find a case with n ≪ d . Traditionally, such a situation is regarded as ill-posed, and there was no choice but to discard most of the information in data ...
Tsutomu T. Takeuchi +8 more
doaj +1 more source
Fisheries Management and Ecology, EarlyView.ABSTRACT To study variables that may trigger the dispersion of the currently expanding European catfish in its native distribution limits, 42 individuals were captured from Upper Lake Constance (lentic) and 42 from two streaming tributaries (lotic), fitted with pressure and temperature loggers, and released at the site of capture (control: lotic or ...
Albert Ros +4 more
wiley +1 more source
Multiple Outflows around a Single Protostar IRAS 15398−3359
The Astrophysical JournalWe present the results of our mosaic observations of a single Class 0 protostar IRAS 15398−3359 with the Atacama Compact Array in the CO J = 2–1 line.
Jinshi Sai +6 more
doaj +1 more source