Results 1 to 10 of about 3,110,538 (301)

Research on directional rock blasting based on different slotted pipe materials of the combined charge structure [PDF]

open access: yesScientific Reports
For shaped charge blasting projects in mining, civil engineering, and similar fields, it is proposed to modify the charge structure by combining slotted tubes and shaped charge liners to obtain a new type of charge structure.
Lianhua Wu   +7 more
doaj   +2 more sources

Microphysical and Kinematic Characteristics of Anomalous Charge Structure Thunderstorms in Cordoba, Argentina

open access: yesAtmosphere, 2022
Some thunderstorms in Cordoba, Argentina, present a charge structure with an enhanced low-level positive charge layer, and practically nonexistent upper-level positive charge. Storms with these characteristics are uncommon in the United States, even when
Bruno Medina   +3 more
doaj   +1 more source

Charge pumping in solar cell structure [PDF]

open access: yesModern Electronic Materials, 2023
Modern understanding of the material science of semiconductor silicon allowed the authors to propose a new concept of the so-called “charge pumping” in the structures of photovoltaic converters or solar cells. This paper presents theoretical estimates of
Vitaliy V. Starkov, Ekaterina A. Gosteva
doaj   +3 more sources

Analysis of the Configuration Relationship Between the Morphological Characteristics of Lightning Channels and the Charge Structure Based on the Localization of VHF Radiation Sources

open access: yesGeophysical Research Letters, 2022
The lightning channel morphology is closely related to developmental processes, which depends on the charge structure. There is currently a lack of understanding of how lightning channel morphology reveals developmental characteristics and charge ...
YuRui Li   +3 more
doaj   +1 more source

Performance Analysis of Internal Ballistic Multiphase Flow of Composite Charge Structure

open access: yesEnergies, 2023
Different charge structures have different interior ballistic performance. Existing research is based on experimental measurements or the lumped parameter method to obtain limited ballistic characteristics, which indirectly impacts the analysis of the ...
Shenshen Cheng   +4 more
doaj   +1 more source

Simulation Study of Microphysical and Electrical Processes of a Thunderstorm in Sichuan Basin

open access: yesAtmosphere, 2023
Based on the Morrison Two-Moment Scheme coupled with the non-inductive electrification mechanism and the discharge parameterization scheme in the Weather Research and Forecasting (WRF) model, a thunderstorm process was simulated by using the WRF ...
Zaihua Guo   +5 more
doaj   +1 more source

Numerical Simulation of Charge Structure Evolution during the Feeder-Type Cells Merging

open access: yesAtmosphere, 2023
Formation of the multipolar charge structure during feeder-type cell merging has important consequences in severe convective weather. This study used the Weather Research and Forecasting model with electrification and discharge parameterization schemes ...
Jie Deng   +7 more
doaj   +1 more source

Numerical Analysis of Thundercloud Charge Structures Difference of Two Thunderstorms in Qinghai and the Beijing Area

open access: yesGaoyuan qixiang, 2022
Two thunderstorm cases occurred at Datong of Qinghai in the northeastern part of the Qinghai-Xizang Plateau and western mountain of Beijing area in the North China Plain were simulated using electrification and discharge schemes with WRF3.7.1_ELEC ...
Jianglin LI   +5 more
doaj   +1 more source

Numerical Simulation of Main Negative Charge Area Parameters for Upward Negative Cloud-to-ground Lightning

open access: yes应用气象学报, 2020
Different types of lightning initiation condition are the focus of scientific research. The initiation of cloud lightning is competitive with self-sustaining uplink lightning.
Wang Yiru   +5 more
doaj   +1 more source

Effect of charge structure on deep-hole cumulative blasting to improve coal seam permeability

open access: yes工程科学学报, 2018
The charge structure is an important aspect of deep-hole cumulative blasting, and its influence on the blasting effect cannot be ignored; a reasonable charge structure can improve the rate of explosive energy utilization, thereby improving the blasting ...
GUO De-yong   +3 more
doaj   +1 more source

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