Results 201 to 210 of about 2,816 (255)

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, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Full‐stage risk management of forecast deviation for large‐scale renewable energy participating in the spot market

Energy Conversion and Economics, EarlyView.
Abstract Against the backdrop of renewable energy achieving full market integration, renewable energy forecasting deviations have become a critical bottleneck constraining the clearing efficiency of electricity spot markets, hindering the rational allocation of costs, and threatening the secure operation of the power system.
Sicheng Xu, Ruoyi Zhang, Jingwei Chen, Si Zhang, Li Yang, Zhenzhi Lin   +5 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, Michael Prime, Jeffrey Bunn, Andrew Payzant, Katharine Page   +4 more
wiley   +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, Andrew M. Crawford, Thomas V. O'Halloran, Chris Jacobsen   +3 more
wiley   +1 more source

Crystallography in Open Science and its open educational resources

Acta Crystallographica Section A, EarlyView.
Open Science is the movement to make scientific research, the data and their dissemination available to any member of an inquiring society, from professionals to citizens, irrespective of their economic situation. The IUCr provides fully open educational resources to Global South and Global North readers and authors.This article presents a review of ...
John R. Helliwell
wiley   +1 more source

The Association of Medicaid Estate Recovery with Homeownership, Home Equity, and Medicaid Enrollment

The Milbank Quarterly, EarlyView.
Policy Points This study examines the association between the implementation of Medicaid estate recovery and homeownership, home equity, and Medicaid enrollment among low‐income adults. Estate recovery is associated with a decrease in Medicaid enrollment among unmarried, low‐income older adults and a decrease in home equity overall and among Black ...
AMANDA SPISHAK‐THOMAS
wiley   +1 more source

‘Mere Amateurs’? Elementary Teachers and the Making of Scientific Authority in the British Child Study Movement

History, EarlyView.
Abstract This article offers new perspectives on the relationship between elementary teaching, scientific expertise and the professionalization of the human sciences. Previous scholarship has demonstrated the ready existence of ‘amateur’ science societies in the nineteenth century where cross‐class exchanges were common.
Julia Gustavsson
wiley   +1 more source

Evidence of star cluster migration and merger in dwarf galaxies. [PDF]

Nature
Poulain M, Smith R, Duc PA, Marleau FR, Habas R, Durrell PR, Fensch J, Lim S, Müller O, Paudel S, Sánchez-Janssen R.   +10 more
europepmc   +1 more source

A hot white dwarf merger remnant revealed by an ultraviolet detection of carbon. [PDF]

Nat Astron
Sahu S, Bédard A, Gänsicke BT, Tremblay PE, Koester D, Farihi J, Hermes JJ, Hollands MA, Cunningham T, Redfield S.   +9 more
europepmc   +1 more source