Results 11 to 20 of about 289 (215)

Sulfur as a binding agent of aggregates in explosive eruptions [PDF]

open access: yesBulletin of Volcanology, 2014
Understanding the mechanisms that govern ash aggregation is of critical importance in volcanology. Aggregation reduces the residence time of ash (≤2 mm) in the atmosphere strongly, by enhancing the sedimentation of finer-grained material generated during explosive eruptions.
Teresa Scolamacchia, Donald B. Dingwell
openaire   +2 more sources

Explosibility and Fire Behavior of some Pyrethroids, Active Agents of Plant Protection Products

open access: yesChemical Engineering Transactions, 2016
Deflagration Index (Kst) parameter determines the speed of the pressure rise during the explosion of tested dust. The larger the Kst, the more severe the explosion.
Maciej Celinski, Wojciech Domanski
doaj   +1 more source

An improved outer pipe method for expansive pressure measurement of static cracking agents

open access: yesInternational Journal of Mining Science and Technology, 2022
Static cracking agent (SCA) is actively investigated as an alternative to explosive blasting for rock breakage due to its immense expansion property.
Shuai Xu   +3 more
doaj   +1 more source

Scalable Deep Multi-Agent Reinforcement Learning via Observation Embedding and Parameter Noise

open access: yesIEEE Access, 2019
In this paper, we explore a scalable deep reinforcement learning (DRL) method for environments with multi-agents. Due to the explosive increase of the input dimensionality with the number of agents, most existing DRL methods are only able to cope with ...
Jian Zhang   +3 more
doaj   +1 more source

Laboratory investigation into the use of soundless chemical demolitions agents for the breakage of hard rock

open access: yesInternational Journal of Coal Science & Technology, 2022
The method of drilling and blasting with explosives is widely used in rock fragmentation applications in the mining industry for mine development and ore production.
Kelly-Meriam Habib   +2 more
doaj   +1 more source

A review of some nonexplosive alternative methods to conventional rock blasting

open access: yesOpen Geosciences, 2021
The conventional blasting rock excavation method is the main means of rock breakage because of its high productivity, and it is relatively inexpensive compared to other methods. However, it raises safety concerns and can negatively impact the environment.
Al-Bakri Ali, Hefni Mohammed
doaj   +1 more source

Emerging Infectious Agents and Blood Safety in Latin America

open access: yesFrontiers in Medicine, 2018
Historically, emerging infectious agents have been an important driving force toward the enhancement of blood safety, illustrated by the sharp reduction in the transmission of infectious agents by blood transfusion after human immunodeficiency virus (HIV)
José Eduardo Levi
doaj   +1 more source

Standoff Methods for the Detection of Threat Agents: A Review of Several Promising Laser-Based Techniques

open access: yesJournal of Spectroscopy, 2014
Detection of explosives, explosive precursors, or other threat agents presents a number of technological challenges for optical sensing methods.
J. Bruce Johnson   +5 more
doaj   +1 more source

MULTIFUNCTIONAL HEAVY-DUTY ROBOTIC FIRE EXTINGUISHING SYSTEM [PDF]

open access: yesАктуальные вопросы пожарной безопасности
In this paper there is considered the creation of a multifunctional heavy-duty robotic fire extinguishing complex with improved tactical and technical characteristics on a tracked chassis.
Roman A. Emelyanov   +3 more
doaj   +1 more source

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