scholarly journals Decontamination of Hydrochloric and Nitric Acids

2018 ◽  
Vol 24 (3) ◽  
pp. 173-178
Author(s):  
Nikolay Iliyanov Padarev ◽  
Danut-Eugeniu Mosteanu
Keyword(s):  
Nitric Acid ◽  
Vapor Pressure ◽  
Natural Disasters ◽  
Hazard Index ◽  
Terrorist Attacks ◽  
Toxic Substances ◽  
Military Operations ◽  
Porous Surfaces ◽  
Mineral Acids ◽  
High Level

Abstract One of the missions of the Bulgarian Army is the formation of maintenance modules that can take part in a series of military activities, including the eradication of the consequences of natural disasters, chemical and radiological accidents and ecological catastrophes. One task of the module formations in chemical and radioactive incidents is decontamination of equipment, materials and people. Pollution with toxic substances can occur in the area of military operations, tank spills, and terrorist attacks in peacetime. The Hazard Index ranks TIMs according to the chemical's production, transport, storage, toxicity, and vapor pressure. Mineral acids considered „high hazards" are also having a high level of toxicity and vaporize easily. This paper provides some chemical tasks about acids decontamination on non-porous materials. We have investigated the decontamination of hydrochloric and nitric acid in the non-porous surfaces through calculations and their decontamination on wood and concrete surfaces

scholarly journals Investigation of Nanogrids for Improved Navy Installation Energy Resilience

2021 ◽  
Vol 11 (9) ◽  
pp. 4298
Author(s):  
Alissa Kain ◽  
Douglas L. Van Bossuyt ◽  
Anthony Pollman
Keyword(s):  
National Security ◽  
Natural Disasters ◽  
Systems Engineering ◽  
Critical Loads ◽  
Electrical Energy ◽  
Terrorist Attacks ◽  
Military Bases ◽  
Specific Interest ◽  
The Military

Military bases perform important national security missions. In order to perform these missions, specific electrical energy loads must have continuous, uninterrupted power even during terrorist attacks, adversary action, natural disasters, and other threats of specific interest to the military. While many global military bases have established microgrids that can maintain base operations and power critical loads during grid disconnect events where outside power is unavailable, many potential threats can cause microgrids to fail and shed critical loads. Nanogrids are of specific interest because they have the potential to protect individual critical loads in the event of microgrid failure. We present a systems engineering methodology that analyzes potential nanogrid configurations to understand which configurations may improve energy resilience and by how much for critical loads from a national security perspective. This then allows targeted deployment of nanogrids within existing microgrid infrastructures. A case study of a small military base with an existing microgrid is presented to demonstrate the potential of the methodology to help base energy managers understand which options are preferable and justify implementing nanogrids to improve energy resilience.

scholarly journals IX. The electric conductivity of nitric acid

1898 ◽  
Vol 191 ◽  
pp. 365-398 ◽  
Keyword(s):  
Nitric Acid ◽  
Physical Properties ◽  
Nitrous Acid ◽  
Internal Resistance ◽  
The Other ◽  
Reasonable Degree ◽  
Mineral Acids ◽  
Artificial Illumination ◽  
The Subject ◽  
Deep Green

Of the commoner mineral acids the chemical changes of Nitric Acid, from their evident complexity, have formed the subject of numerous memoirs, while those of sulphuric acid, from their assumed simplicity, have been to some degree neglected; on the other hand, the physical properties of the latter have been studied with considerable elaboration, while those of the former have been passed over, doubtless on account of the corrosive nature of the acid and the difficulty of preparing and preserving it in a reasonable degree of purity. Further, with certain exceptions, the alterations in physical properties induced by the products of reduction, be they nitrogen peroxide or nitrous acid, either singly or conjointly, have attracted but little attention, though it is a common matter of observation that the current intensity of a Grove’s or other cell containing nitric acid remains constant, even though the fuming acid, originally colourless or red, has become of a deep green tint. It is more than probable that of the factors of Ohm’s law, both the E. M. F. and internal resistance are continually varying. At the earliest stages of the enquiry it was found that the passage of a few bubbles of nitric oxide gas into a considerable volume of nitric acid produced an alteration of one percent, in the resistance, and the same result could be effected to a less degree by exposure to sunlight, and to a still less degree by exposure to artificial illumination. Therefore, we determined to investigate the alterations of conductivity produced by changes of concentration and temperature in samples of acid purified with necessary precautions, more especially as former workers upon the subject have either used samples of acid confessedly impure, or have been silent as to any method of purification, or have adopted no special care in dealing with a substance so susceptible of polarisation.

scholarly journals SCREENING OF ENVIRONMENTAL IMPACT OF POLLUTION WITH THE QGIS PLUGIN ENVIFATE

2017 ◽  
Vol XLII-4/W2 ◽  
pp. 79-83 ◽  
Author(s):  
F. Geri ◽  
O. Cainelli ◽  
G. Salogni ◽  
P. Zatelli ◽  
M. Ciolli
Keyword(s):  
Environmental Pollution ◽  
Atmospheric Dispersion ◽  
Third Party ◽  
Environmental Research ◽  
Future Research ◽  
Toxic Substances ◽  
Command Line ◽  
Screening Analysis ◽  
High Level ◽  
The University

Public and academic interest in environmental pollution caused by toxic substances and other sources, like noise, is constantly raising. To protect public health and ecosystems it is necessary to maintain the concentrations of pollutants below a safety threshold. In this context the development of models able to assess environmental pollution impact has been identified as a priority for future research. Scientific community has therefore produced many predictive models in the field. The vast majority of them needs to be run by specialists with a deep technical knowledge of the modeled phenomena in order to process the data and understand the results and it is not feasible to use this models for simple prescreening activities. Planners, evaluators and technical operators need reliable, usable and simple tools in order to carry out screening analysis of impact assessment. <br><br> The ENVIFATE software is currently under development by the Department of Civil, environmental and mechanical engineering of the University of Trento, Italy, in the frame of a project funded by the Italian Veneto Region with the aim to make available to nonspecialists screening analysis to assess the risks of a set of possible environmental pollution sources in protected areas. <br><br> The development of ENVIFATE follows these basic requirements: i) Open-Source ii) multiplatform iii) user friendly iv) GIS oriented. In order to respect these principles we have chosen to develop a plugin of QGIS, using python as a development language and creating a module for each environmental compartment analyzed: rivers, lakes, atmospheric dispersion, dispersion in groundwater and noise. <br><br> The plugin architecture is composed of a series of core functions characterized by command line interfaces that can be called from third-party applications (such as Grass GIS), connectable in custom data flows and with a high level of modularity and scalability. The base of the different models are highly tested and reliable algorithms adopted by the Italian Institute for Protection and Environmental Research (Istituto Superiore per la Protezione e la Ricerca Ambientale – ISPRA). Due to their simplicity, and for safety reasons, the structure of these models is constrained to provide conservative results, so to overestimate actual risk. This approach allows to provide statistically validated instruments to be used in different environmental contexts. All modules of the plugin provide numerical and cartographical results: in particular the command-line interface provides "static" results, or linked to a particular spatial and temporal state, while the Qgis plugins iterate the single analysis along space and time in order to provide georeferenced maps and time distributed results.

scholarly journals The Mediterranean Region: between terrorism, tourism and security

2018 ◽  
Vol 1 (2) ◽  
pp. 135-148
Author(s):  
Nicoletta Varani ◽  
Enrico Bernardini
Keyword(s):  
Natural Disasters ◽  
21St Century ◽  
Mediterranean Region ◽  
Tourism Industry ◽  
Terrorist Attacks ◽  
The Political ◽  
International Conflicts ◽  
Tourist Destinations ◽  
The World ◽  
The Mediterranean

Abstract Tourism remains a very vulnerable sector and sensitive to both internal and external impacts, such as economic and social crises, natural disasters, epidemics and diseases, national and international conflicts. Among these, the most alarming threat in the 21st century remains terrorism. In this sense, this paper aims to study the effects of the increasingly frequent terrorist attacks by the extremist factions of Al-Qaeda and ISIL on the tourism industry in the Mediterranean Region. The contribution, after having discussed in general the tourism market in the Mediterranean Region, intends to highlight the impacts and repercussions of the terrorist attacks on tourism, presenting the example of Egypt and one of its best-known tourist destinations, Sharm el-Sheikh. In this sense, it is shown how, in a few years, the political instability of the country and the attacks of 2005 and 2016 have significantly reduced the influx of tourists, transforming it from one of the most visited destinations in the world in a place of increasing abandonment.

Terrorism and Democracy

2021 ◽  
Vol 20 (3) ◽  
pp. 344-379
Author(s):  
Andrey Korotayev ◽  
Ilya Vaskin ◽  
Daniil Romanov
Keyword(s):  
Positive Relationship ◽  
The Other ◽  
Terrorist Attacks ◽  
Democratic Regime ◽  
Political Regimes ◽  
Powerful Factor ◽  
Terrorist Activity ◽  
Low Intensity ◽  
High Level ◽  
The Relationship

Abstract This article proposes a new explanation of the positive correlation between democracy and terrorism detected in many previous studies. It is shown that this might be accounted for by the fact that factional democracies are subjected to more terrorist attacks than the other political regimes. A positive relationship between the democratic regime and the level of terrorist activity can be obtained due to the inclusion of factional democracies in the sample of democratic states. If factional democracies are excluded from the sample, the relationship between the level of terrorist activity and the democratic regime is negative. The analysis allows to maintain that factional democracy is a rather powerful factor of a high level of terrorist activity, while non-factional democracy turns out to be rather a statistically significant predictor of a relatively low intensity of terrorist attacks.

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