Results 151 to 160 of about 1,859,132 (364)

Numerical simulation of thermal stratification phenomenon in stagnant branch pipe of pressurized water reactors

open access: yesHe jishu
BackgroundIn thermal pipelines of nuclear power systems, thermal stratification is a common phenomenon that can cause stress concentration and deformation of pipeline structures, thereby leading to safety hazards.
MA Jingxiang   +2 more
doaj   +1 more source

Technology of double casing tubes & a binary cycle system for hole cleaning for CBM multi-branch horizontal wells

open access: yesNatural Gas Industry B, 2017
At present, the aeration-assisted cutting-carrying technology is faced with complexities in the drilling of CBM multi-branch horizontal wells. For example, the aerating pressure is hardly maintained, and the borehole instability may happen.
Yong Yang   +7 more
doaj   +1 more source

Directional Whispering Gallery Mode in Microring Lasers Enabled by Tilted Azimuthal Gratings

open access: yesAdvanced Photonics Research, EarlyView.
The chiral light propagation in microring lasers with active cladding, enabled by tilted azimuthal gratings, is illustrated. The symmetry of the whispering gallery mode is disrupted due to scattering losses that are determined by the tilted angle, resulting in distinct clockwise and counterclockwise light propagation, and enabling controlled chirality ...
Jinghan Chen   +6 more
wiley   +1 more source

Carbon‐Cloth Supported ZnO Nanorods as Binder‐Free Zinc‐Ion Battery Anodes: An Investigation into the Electrode Formation Process

open access: yesAdvanced Sustainable Systems, EarlyView.
A freestanding ZnO nanorod array on carbon cloth (ZnO/CC) is synthesized via hydrothermal growth and studied during its electrochemical reduction to Zn. Advanced characterization techniques (SEM, HRTEM, and STXM) reveal the morphochemical evolution of ZnO nanorods, providing unprecedented insights into the ZnO‐to‐Zn conversion mechanism.
Elisa Emanuele   +13 more
wiley   +1 more source

The Blue Horizontal-branch Stars from the LAMOST Survey: Atmospheric Parameters

open access: yesThe Astrophysical Journal Supplement Series
Blue horizontal-branch (BHB) stars are crucial for studying the structure of the Galactic halo. Accurate atmospheric parameters of BHB stars are essential for investigating the formation and evolution of the Galaxy.
Jie Ju   +6 more
doaj   +1 more source

HOB-CNN: Hallucination of occluded branches with a convolutional neural network for 2D fruit trees

open access: yesSmart Agricultural Technology, 2023
Orchard automation has attracted the attention of researchers recently due to the shortage of global labor force. To automate tasks in orchards such as pruning, thinning, and harvesting, a detailed understanding of the tree structure is required. However,
Zijue Chen   +3 more
doaj  

Hydrogen-Rich Models for Horizontal-Branch and Post-Horizontal Stars

open access: yesThe Astrophysical Journal, 1971
Horizontal and post-horizontal branch hydrogen rich stellar atmospheric models, presenting emergent fluxes and H and He line ...
openaire   +2 more sources

An Analysis of Elusive Relationships in Floating Zone Growth Using Data Mining Techniques

open access: yesAdvanced Theory and Simulations, EarlyView.
Ultra‐pure silicon single‐crystals can be grown by the Floating Zone (FZ) method. This study investigates intricate relationships between process stability measures and multiple growth parameters by applying data mining techniques on FZ simulations. Regression Trees identified multivariate relationships that help explaining complex interactions between
Lucas Vieira   +3 more
wiley   +1 more source

Metallicity of Globular Cluster NGC 5053 from VI CCD Photometry [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2001
Red giant branch shape and the luminosity of horizontal branch on the (V-I)-V CMD are used to derive the metallcity of the globular cluster NGC 5053. The metallicities of NGC 5053 derived by SMR method ([Fe/H]=-2.62+-0.07) and the relation between [Fe/H]
Young-Jong Sohn
doaj  

Globular Clusters and Horizontal Branch

open access: yes, 2004
An analysis of available Galactic globular cluster data on metallicity, ages, the distribution of stars on the horizontal branch and the distribution of the periods of RR0 Lyr variables showed that: 1. The latter two characteristics can be used for determining the Oosterhoff type. 2.
openaire   +2 more sources

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