Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Changda Zheng"'
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
In hard rock deep-hole blasting excavation, blastholes are rarely utilized due to the clamping effect of the lower rock, which affects excavation progress and restricts the development and application of deep-hole blasting technology. Cut blasting is
Externí odkaz:
https://doaj.org/article/cc6cc3ef0cc04c45bbcb18ed851d77dc
Publikováno v:
Energies, Vol 13, Iss 20, p 5340 (2020)
The blasting stress wave and blasting gas generated by explosive blasting are the two main motive powers of rock fragmentation. An experimental method based on water jet test is used to study the energy distribution ratio of blasting stress wave and
Externí odkaz:
https://doaj.org/article/dc8acc7e4b714ea8a2087da92a5e0cf0
Publikováno v:
The Scientific World Journal, Vol 2013 (2013)
GaN green LED was grown on Si (111) substrate by MOCVD. To enhance the quality of InGaN/GaN MQWs, same-temperature (ST) GaN protection layers with different thickness of 8 Å, 15 Å, and 30 Å were induced after the InGaN quantum wells (QWs) layer. R
Externí odkaz:
https://doaj.org/article/2a4924fc0331461eb5b2fb4bbd819a38
Publikováno v:
Mechanics of Advanced Materials and Structures. :1-15
Autor:
Chenxi Ding, Chenglong Xiao, Jianhua Chen, Changda Zheng, Genghao Zhang, Shuai You, Songlin He, Wen Chen, Xintong Liang
Publikováno v:
Mechanics of Advanced Materials and Structures. :1-7
Publikováno v:
Journal of Luminescence. 252:119401
Publikováno v:
Superlattices and Microstructures. 128:307-311
The effect of AlGaN interlayer (IL) in bottom quantum barriers on efficiency enhancement of the InGaN green light-emitting diodes (LEDs) on patterned silicon substrate has been investigated. Significantly, the LEDs with AlGaN IL show high emission ef
Autor:
Fengyi Jiang, Changda Zheng, Chunlan Mo, Junlin Liu, Wang Xiaolan, Zhijue Quan, Xingan Jiang, Jianli Zhang
Publikováno v:
Optical Materials. 89:505-511
In this study, the influence of InGaN/GaN superlattices (SLs) preparing layer and InGaN/GaN blue multiple quantum wells (BMQWs) preparing layer on the performance of InGaN-based green LED on patterned silicon substrate is investigated. Experimental r
Publikováno v:
Tunnelling and Underground Space Technology. 83:51-59
Incorporating high-speed camera technology, an experimental system of high-speed digital image correlation is established and extended to blasting research. Based on the model experiment, the effects of the filling medium and the decoupling coefficie
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
In hard rock deep-hole blasting excavation, blastholes are rarely utilized due to the clamping effect of the lower rock, which affects excavation progress and restricts the development and application of deep-hole blasting technology. Cut blasting is