Results 131 to 140 of about 38,151 (299)
Science Education, EarlyView.ABSTRACT This is the third article in a series, emanating from a project that used social semiotics and phenomenography to explore the role visual representations play in the teaching and learning of chemistry. Building on our earlier work that identified five qualitatively different ways that teachers may use to unpack visual representations in their ...
Emelie Patron +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
Small Methods, EarlyView.A particle‐resolved method for porosity and surface area analysis of microparticles is presented, based on single‐particle trajectory tracking via optical video microscopy integrated with microfluidics and LED illumination. Operating with minimal analyte and no drying steps, the approach offers per‐particle analysis using widely available laboratory ...
Fabian Rohne +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
Superconducting On-Chip Spectrometery for Millimeter-submillimeter Wave Astronomy
IEICE Transactions on Electronics, 2015 Since the birth of astrophysics, astronomers have been using free-space optics to analyze light falling on Earth. In the future however, thanks to the advances in photonics and nanoscience/nanotechnology, much of the manipulation of light might be carried out using not optics but confined waveguides, or circuits, on a chip.
openaire +4 more sources
VIEW, EarlyView.The combination of calibrated micro‐CT and quantitative micro‐XRF measurement facilitates the correlation of density and composition in the 3D macro‐structure of teeth. Zn concentration in dentin increases by a factor of 10 toward the pulp. Incidentally, the overall density decreases, showing an association between Zn and the dentin tissue porosity ...
Ioanna Mantouvalou +11 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
New opportunities for grassland species in warming temperate winters
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Temperate winters are getting warmer, the length of the growing season is increasing and mid‐winter fluctuations of warm and freezing temperatures are more frequent. Although typically winter dormant, some herbaceous perennials can maintain or grow green leaves during ...
F. Curtis Lubbe +3 more
wiley +1 more source
The Astrophysical JournalDetecting planet signatures in protoplanetary disks is fundamental to understanding how and where planets form. In this work, we report dust and gas observational hints of planet formation in the disk around 2MASS J16120668-301027, as part of the Atacama
Anibal Sierra +21 more
doaj +1 more source
Clinical Endocrinology, EarlyView.ABSTRACT Objective Polycystic ovary syndrome (PCOS) is associated with an increased risk of cerebrovascular disease, but the effects on cerebrovascular function are unknown. In this pilot study, we sought to compare cerebrovascular perfusion, pulsatility, reactivity and metabolism between women with PCOS and healthy volunteers using MRI, and ...
Melissa E. Wright +5 more
wiley +1 more source