Effect of sediment size on area of influence during groundwater remediation by air sparging: a laboratory approach

1999 ◽  
Vol 38 (1) ◽  
pp. 1-6 ◽  
Author(s):  
J. W. Peterson ◽  
P. A. Lepczyk ◽  
K. L. Lake
Keyword(s):  
Groundwater Remediation ◽  
Air Sparging ◽  
Sediment Size ◽  
Area Of Influence

Using radon-222 as indicator for the evaluation of the efficiency of groundwater remediation by in situ air sparging

2011 ◽  
Vol 102 (2) ◽  
pp. 193-199 ◽  
Author(s):  
Michael Schubert ◽  
Axel Schmidt ◽  
Kai Müller ◽  
Holger Weiss
Keyword(s):  
Groundwater Remediation ◽  
Air Sparging

Numerical Simulation of Air Flow during Air Sparging Remediation

2011 ◽  
Vol 138-139 ◽  
pp. 27-32 ◽  
Author(s):  
Jian Wang ◽  
Li Ming Hu
Keyword(s):  
Numerical Simulation ◽  
Groundwater Remediation ◽  
Flow Model ◽  
Water Saturation ◽  
Air Sparging ◽  
Phase Flow ◽  
Centrifuge Test ◽  
Two Phase ◽  
Zone Of Influence ◽  
2D Numerical Model

A 2D numerical model is used to modeling the movement of air during air sparging process for groundwater remediation. The zone of influence (ZOI) and the water saturation distribution can be obtained from the calculations. The results agree well with the centrifuge test data, indicating the two-phase flow model is reasonable for numerical simulation of air sparging process. It was also shown that air compressibility has a significant influence on the extent of ZOI.

NATO adaptation to current challenges and mechanisms of Ukraine’s cooperation with the North Atlantic Treaty Organization

2019 ◽  
pp. 73-81
Author(s):  
Oleh Poshedin
Keyword(s):  
North Atlantic ◽  
Task Force ◽  
Response Force ◽  
Cyber Attack ◽  
Adaptation Measures ◽  
Joint Force ◽  
Security Environment ◽  
The North ◽  
The North Atlantic ◽  
Area Of Influence

The purpose of the article is to describe the changes NATO undergoing in response to the challenges of our time. Today NATO, as a key element of European and Euro-Atlantic security, is adapting to changes in the modern security environment by increasing its readiness and ability to respond to any threat. Adaptation measures include the components required to ensure that the Alliance can fully address the security challenges it might face. Responsiveness NATO Response Force enhanced by developing force packages that are able to move rapidly and respond to potential challenges and threats. As part of it, was established a Very High Readiness Joint Task Force, a new Allied joint force that deploy within a few days to respond to challenges that arise, particularly at the periphery of NATO’s territory. NATO emphasizes, that cyber defence is part of NATO’s core task of collective defence. A decision as to when a cyber attack would lead to the invocation of Article 5 would be taken by the North Atlantic Council on a case-by-case basis. Cooperation with NATO already contributes to the implementation of national security and defense in state policy. At the same time, taking into account that all decision-making in NATO based on consensus, Ukraine’s membership in the Alliance quite vague perspective. In such circumstances, in Ukraine you often can hear the idea of announcement of a neutral status. It is worth reminding that non-aligned status did not save Ukraine from Russian aggression. Neutral status will not accomplish it either. All talks about neutrality and the impossibility of Ukraine joining NATO are nothing but manipulations, as well as recognition of the Ukrainian territory as Russian Federation area of influence (this country seeks to sabotage the Euro-Atlantic movement of Ukraine). Think about it, Moldova’s Neutrality is enshrined in the country’s Constitution since 1994. However, this did not help Moldova to restore its territorial integrity and to force Russia to withdraw its troops and armaments from Transnistria.

Evaluation of hydrogeomechanical risks for mining operations in the area of influence of floor operations

2020 ◽  
pp. 190-202
Author(s):  
I.А. Sadovenko ◽  
◽  
V.I. Tymoshchuk ◽  
A.N. Zahrytsenko ◽  
N.I. Dereviahina ◽  
...  
Keyword(s):  
Mining Operations ◽  
Area Of Influence

Pilot plant results for groundwater remediation at the former gas works site ‘Leopoldau’ in Vienna, Austria

2006 ◽  
Vol 14 (2) ◽  
pp. 630-633 ◽  
Author(s):  
W. Fuchs ◽  
T. Wirthensohn ◽  
W. Wittmann ◽  
P. Schoeberl
Keyword(s):  
Pilot Plant ◽  
Groundwater Remediation
Sign in / Sign up

Export Citation Format

Share Document