Results 51 to 60 of about 671,978 (336)

Nitrogen‐Centered Organic Persistent Radicals Catalyze Redox‐Neutral C─C Bond Forming Reactions

open access: yesAngewandte Chemie, EarlyView.
Kuhn verdazyls, discovered over 60 years ago, are shown as effective catalysts for the first time. Their tunable redox properties enable organocatalytic redox‐neutral C─H arylation and C─H trifluoromethylation reactions without light activation.
Shrouq Mujahed   +4 more
wiley   +2 more sources

The role of step edge diffusion in epitaxial crystal growth

open access: yes, 1999
The role of step edge diffusion (SED) in epitaxial growth is investigated. To this end we revisit and extend a recently introduced simple cubic solid-on-solid model, which exhibits the formation and coarsening of pyramid or mound like structures.
Amar   +37 more
core   +3 more sources

Criterion validity and test-retest reliability of SED-GIH, a single item question for assessment of daily sitting time

open access: yesBMC Public Health, 2019
BackgroundSedentary behaviour has been closely linked to metabolic and cardiovascular health and is therefore of importance in disease prevention. A user-friendly tool for assessment of sitting time is thus needed.
K. Larsson   +5 more
semanticscholar   +1 more source

Tracing black hole accretion with SED decomposition and IR lines: from local galaxies to the high-z Universe [PDF]

open access: yes, 2016
We present new estimates of AGN accretion and star formation (SF) luminosity in galaxies obtained for the local 12 μm sample of Seyfert galaxies (12MGS), by performing a detailed broad-band spectral energy distribution (SED) decomposition including the ...
C. Gruppioni   +11 more
semanticscholar   +1 more source

Intrinsic AGN SED & black hole growth in the Palomar-Green quasars [PDF]

open access: yes, 2017
We present a new analysis of the PG quasar sample based on Spitzer and Herschel observations. (I) Assuming PAH-based star formation luminosities (L_SF) similar to Symeonidis et al.
C. Lani, H. Netzer, D. Lutz
semanticscholar   +1 more source

Dynamic Micromechanical Characterization of 3D Printed Bone In Vitro Models Manufactured via Vat Photopolymerization

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a novel approach to designing and fabricating high‐porosity 3D‐printed scaffolds using a customized resin. Scaffold geometry, cellular interactions, and mechanical properties are analyzed to demonstrate these engineered bone models.
Sera Choi   +6 more
wiley   +1 more source

The SED-GIH: A Single-Item Question for Assessment of Stationary Behavior—A Study of Concurrent and Convergent Validity

open access: yesInternational Journal of Environmental Research and Public Health, 2019
The unfavorable health consequences of prolonged time spent sedentary (stationary) make accurate assessment in the general population important. However, for many existing questionnaires, validity for identifying stationary time has not been shown or has
Lena V. Kallings   +4 more
semanticscholar   +1 more source

Evolution of the stellar-merger red nova V1309 Scorpii: SED analysis [PDF]

open access: yes, 2016
One very important object for understanding the nature of red novae is V1309 Sco. Its pre-outburst observations showed that, before its red-nova eruption in 2008, it was a contact binary quickly evolving to the merger of the components.
R. Tylenda, T. Kami'nski
semanticscholar   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

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