Results 121 to 130 of about 1,859,132 (364)

ε-mechanism driven pulsations in hot subdwarf stars with mixed H-He atmospheres

open access: yesOpen 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

The Effect of Different Branch Angles and Different Branch Pipe Sizes on the Onset Law of Liquid Entrainment

open access: yesFrontiers 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

THE METALLICITY GRADIENT OF THE THICK DISK BASED ON RED HORIZONTAL-BRANCH STARS FROM SDSS DR8 [PDF]

open access: yes, 2011
Based on SDSS DR8, we have selected a sample of 1728 red horizontal-branch (RHB) stars with |Z| < 3 kpc by using a color–metallicity relation and stellar parameters.
Y. Chen   +3 more
semanticscholar   +1 more source

Environmental Sustainability of Natural Biopolymer‐Based Electrolytes for Lithium Ion Battery Applications

open access: yesAdvanced Materials, EarlyView.
Twenty‐one biopolymer electrolytes including membrane‐liquid electrolytes, gel electrolytes, and solid electrolytes are synthesized to analyze their electrochemical properties and environmental impacts through life cycle assessment. This consistent and comparable study demonstrates the significant functional and environmental benefits of biopolymer ...
Jing Huang   +4 more
wiley   +1 more source

Red horizontal branch stars in the Galactic field: A chemical abundance survey

open access: yesEPJ 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

On the Nature of the Horizontal Branch. I

open access: yesThe Astrophysical Journal, 1966
Horizontal branch characteristics correlation with observed metal abundance, reexamining stellar survival in helium flash without ...
openaire   +2 more sources

A lack of close binaries among hot horizontal branch stars in globular clusters. II. NGC\,2808 [PDF]

open access: yes, 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

Revisiting the “Stick‐Slip” Process via Magnetism‐Coupled Flexible Sensors with Bioinspired Ridge Architecture

open access: yesAdvanced Materials, EarlyView.
A sandwich‐like device for stick‐slip perception is developed, featuring a deformable bioinspired ridge layer with capability of lateral deformation and fast recovery. Coupled with magnetized functionality, the morphological transformation is capable to induce periodical electrical pulses which allows to revisit the stick‐slip process when human ...
Dan Fang   +6 more
wiley   +1 more source

Hot subdwarf stars in close-up view - II. Rotational properties of single and wide binary subdwarf B stars [PDF]

open access: yes, 2012
Subluminous B stars (sdBs) form the extremely hot end of the horizontal branch and are therefore related to the blue horizontal branch (BHB) stars. While the rotational properties of BHB stars have been investigated extensively, studies of sdB stars have concentrated on close binaries that are influenced by tidal interactions between their components ...
arxiv   +1 more source

Phyllotaxis: Leaf arrangement on a horizontal branch and crystallographic borders

open access: yesVestnik MGTU
Phyllotaxis 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

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