Results 41 to 50 of about 2,880,469 (188)

Copolymers of 4-Trimethylsilyl Diphenyl Acetylene and 1-Trimethylsilyl-1-Propyne: Polymer Synthesis and Luminescent Property Adjustment

open access: yesMolecules, 2022
Poly(4-trimethylsilyl diphenyl acetylene) (PTMSDPA) has strong fluorescence emission, but its application is limited by the effect of aggregation-caused quenching (ACQ).
Tanxiao Shen   +4 more
doaj   +1 more source

Research on the destroy characteristics of PTFE/Cu composite liner to explosive reactive armor

open access: yesHeliyon
The jet generated through PTFE based inert material liner has the characteristics of low energy, low density, and large aspect ratio, which can effectively achieve the “penetration without explosion” of explosive reactive armor.
Jianya Yi   +5 more
doaj   +1 more source

Nano-bulk aluminum fabrication from nano powder mixed with micro powder by explosive consolidation

open access: yesMaterials & Design, 2022
Explosive Consolidation Method has unique advantages with well prospects in the preparation and processing of bulk materials. In this paper, self-designed structure was employed to study the influence of the mass ratio of nano aluminum powder to aluminum
Zi Wang   +4 more
doaj   +1 more source

Ratio Shared Task 2019

open access: yes, 2019
<p>Ratio Shared Task 2019:</p> <p>Task 1 (same side classification)</p> <p> </p> <p>Task 2 (stance classification)</p ...
RATIO
core   +1 more source

Dynamic Reaction and Damage Evaluation of Reactive Powder Concrete Strengthened Reinforced Concrete Columns Subjected to Explosive Load

open access: yesBuildings
China has an existing building area of 80 billion square meters, where reinforced concrete structures have a large quantity and a wide surface area. The risk of structures being subjected to blast loading is relatively high.
Siyuan Qiu   +4 more
doaj   +1 more source

Considering explosive charge shape and embedded depth in the design of concrete shelter thickness

open access: yesDefence Technology, 2023
Cost and safety are important considerations when designing the thickness of a protective reinforced concrete shelter. The blast perforation limit (BPL) is the minimum concrete shelter thickness that resists perforation under blast loading.
Yi Fan   +5 more
doaj   +1 more source

Unit Root Tests With Markov-Switching [PDF]

open access: yes
Diba and Grossman (1988) and Hamilton and Whiteman (1985) recommended unit root tests for rational bubbles. They argued that if stock prices are not more explosive than dividends, then it can be concluded that rational bubbles are not present.
Gee Kwang Randolph Tan, Xiao Qin
core   +2 more sources

Influence of Ball Bearing Size on the Flight and Damage Characteristics of Blast-Driven Ball Bearings

open access: yesApplied Sciences, 2022
This paper presents insights into the influence of ball size on the flight characteristics and damage of a ball bearing embedded in a rear detonated cylindrical charge. It includes results from a post-test damage analysis of ball bearings from previously
Genevieve S. Langdon   +3 more
doaj   +1 more source

Experimental Study of Bilinear Initiating System Based on Hard Rock Pile Blasting

open access: yesShock and Vibration, 2017
It is difficult to use industrial explosives to excavate hard rock and achieve suitable blasting effect due to the low energy utilization rate resulting in large rocks and short blasting footage.
Yusong Miao   +4 more
doaj   +1 more source

Pyroshock Prediction of Ridge-Cut Explosive Bolts Using Hydrocodes

open access: yesShock and Vibration, 2016
Pyrotechnic release devices such as explosive bolts are prevalent for many applications due to their merits: high reliability, high power-to-weight ratio, reasonable cost, and more. However, pyroshock generated by an explosive event can cause failures in
Juho Lee   +6 more
doaj   +1 more source

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