Results 121 to 130 of about 2,222,310 (369)
Is mass loss along the red giant branch of globular clusters sharply peaked? The case of M3
, 2007 There is a growing evidence that several globular clusters must contain multiple stellar generations, differing in helium content. This hypothesis has helped to interpret peculiar unexplained features in their horizontal branches.
Bessell M. S. +6 more
core +1 more source
Recent Advances in Wide‐Bandgap Perovskite Solar Cells
Advanced Materials, EarlyView.Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley +1 more source
ε-mechanism driven pulsations in hot subdwarf stars with mixed H-He atmospheres
Open Astronomy, 2017 The ε mechanism is a self-excitation mechanism of stellar pulsations which acts in regions where nuclear burning takes place. It has been shown that the ε mechanism can excite pulsations in hot pre-horizontal branch stars before they settle into the ...
Battich Tiara +3 more
doaj +1 more source
Frontiers in Energy Research, 2020 The T-junction has been extensively employed in nuclear power plant systems. To ensure the normal operation of nuclear power plant, the onset point of T-junction liquid entrainment requires in-depth studies.
Xiaoyu Li +6 more
doaj +1 more source
A lack of close binaries among hot horizontal branch stars in globular clusters. II. NGC\,2808 [PDF]
, 2011 Models based on their binary origin have been very successful in reproducing the properties of field subdwarf-B stars, but the observations of their analogues in globular clusters has posed new problems, while the discovery of multiple populations ...
C. M. Bidin +4 more
semanticscholar +1 more source
Electric Field Driven Soft Morphing Matter
Advanced Materials, EarlyView.This study presents soft morphing matter robots that exhibit extremely high morphological adaptability and complex multimodal electric field response. They can undergo large, controlled body deformation and show complex locomotion on different terrains under the manipulation of external electric fields, making a significant step beyond current ...
Ciqun Xu +3 more
wiley +1 more source
Phyllotaxis: Leaf arrangement on a horizontal branch and crystallographic borders
Vestnik MGTUPhyllotaxis is an orderly arrangement of leaves on plant stems and branches. The natural reason of this arrangement is that each species based on the habitat conditions in the course of evolution in one way or another solved the problem of optimising the
Voytekhovsky Yu. L., Gunchenkova A. D.
doaj +1 more source
Red horizontal branch stars in the Galactic field: A chemical abundance survey
EPJ Web of Conferences, 2013 A large sample survey of Galactic red horizontal-branch (RHB) stars was conducted to investigate their atmospheric parameters and elemental abundances.
Fo B.-Q., Sneden C., Afşar M.
doaj +1 more source
The Na-O anticorrelation in horizontal branch stars - I. NGC 2808 [PDF]
, 2011 The chemical composition of horizontal branch (HB) stars might help to clarify the formation history of individual globular clusters (GCs). We studied the Na-O anti-correlation from moderately high resolution spectra for 91 stars on the bimodal HB of NGC
R. Gratton +9 more
semanticscholar +1 more source
Topology in Biological Piezoelectric Materials
Advanced Materials, EarlyView.This review summarizes the topological structures in biological piezoelectric materials, covering morphology evolution, spatial arrangement, and biomimetic strategies. These topologies modulate structure‐property relationships across multiple scales, enabling performance enhancement and multifunctional integration.
Chen Chen +7 more
wiley +1 more source