Search results for "Warfare"

Discrimination of nerve gases mimics and other organophosphorous derivatives in gas phase using a colorimetric probe array.

2012

A colorimetric array for the chromogenic discrimination of organophosphorous derivatives in gas phase has been developed. The array allows us to classify the nerve agent simulants DFP, DCP and DCNP.

Aryl carbinols as nerve agent probes. Influence of the conjugation on the sensing properties

2012

Two new aryl carbinols (1 and 3) have been synthesised and characterised and their ability as OFF-ON probes for the chromogenic detection of the nerve agent simulant in acetonitrile has been tested. In addition compound 2 has been also studied. The carbinols suffered a phosphorylation reaction followed by an elimination process giving rise to the corresponding carbocations. This transformation of the carbinol into the carbocation is responsible for a significant color change. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2012.

Chromogenic Detection of Nerve Agent Mimics by Mass Transport Control at the Surface of Bifunctionalized Silica Nanoparticles

2010

Chemical warfare (CW) agents are toxic chemicals that have been used in several terrorist attacks in recent years. Among CW species, nerve agents are probably the most dangerous; their high toxicity and facile synthesis underscores the need to detect these lethal compounds with quick, reliable procedures. Analytical methods based on enzymatic assays and physical measurements have generally been used to detect these hazards. However, these protocols usually have limitations such as low selectivity, poor portability, and a certain level of complexity. In recent years, several chromogenic and fluorogenic sensors, and reagents for the detection of nerve agents have been described. For instance,…

Las doctrinas militares : la represión política en Tucumán, Argentina (1975-1983)

2019

La represión política que tuvo lugar en la década del 70 en Tucumán, en la región Norte de Argentina, se inicia “legalmente” en febrero de 1975 con el operativo militar decretado por el Poder Ejecutivo Nacional conocido como “Operativo Independencia”. Distintos jefes militares, como parte del Comando de la V Brigada de Infantería, estuvieron a cargo del plan represivo. Cada uno de estos militares fue formado bajo distintas doctrinas militares impartidas al ejército argentino. A través de la identificación y diferenciación de las estrategias militares ejecutadas ?en tanto inteligencia, ocupación del territorio, instalación de centros clandestinos de detención y espacios de inhumación identif…

Phenomena in the Cyber World

2015

This chapter describes and evaluates the cyber world, including its phenomena, from a strategic perspective. As no universally accepted definitions for the cyber world exist, associated literature and publications address it in many different ways. A five-layer model is constructed for cyber threats, which include cybervandalism, cybercrime, cyber intelligence, cyberterrorism and cyberwarfare. This chapter depicts the standards-based risk model, cyber operations and cyberweaponry, as well as the critical structures of society as the targets. Moreover, cyber security definitions are provided. Cyber world phenomena are addressed in more detail in other chapters of this book.

The Modern Strategies in the Cyber Warfare

2018

As there is no generally accepted definition for cyber warfare, it is a term that is quite liberally used in describing events and actions in the digital cyber world. The concept of cyber warfare became extremely popular from 2008 to 2010, partly superseding the previously used concept of information warfare which was launched in the 1990s. For some, cyber warfare is war that is conducted in the virtual domain. For others, it is a counterpart to conventional “kinetic” warfare. According to the OECD’s 2001 report, cyberwar military doctrines resemble those of so-called conventional war: retaliation and deterrence. Researchers agree with the notion that the definition of cyberwar should addre…

Attitudes concerning nuclear war in finland and in the united states

1986

Four hundred seventy residents of Ridgewood, New Jersey, and 493 residents of Jyvaskyla, Finland, were randomly selected and interviewed about their attitudes concerning nuclear war. In both areas, a high proportion of the samples believed that some kind of nuclear incident is likely in the next decade. The vast majority stated that a nuclear war could not be won and that they expected to die in the event of war. About three fourths in both communities seldom discuss nuclear issues with anyone including their own children, and only one fourth of the U.S sample and about one half of the Finnish sample have ever done anything personally to oppose the arms race. About one half of the Americans…

The Reconstruction of Production and Storage Sites for Chemical Warfare Agents and Weapons from Both World Wars in the Context of Assessing Former Mu…

2017

This chapter begins by listing the quantities and sites of chemical agent production during both world wars and outlining the relative importance of these new weapons. Using the example of the production sites of World War II, the setting in which the construction and operation of these factories took place will be described, as well as the structure of the facilities. It will be shown that it was not only Fritz Haber’s former colleagues who made important contributions to the research of chemical warfare agents and their production, but that an important role was also played by students of his successor at the Kaiser Wilhelm Institute for Physical Chemistry and Electrochemistry. In order t…

One Hundred Years of Chemical Warfare: Research, Deployment, Consequences

2018

Towards the design of organocatalysts for nerve agents remediation: The case of the active hydrolysis of DCNP (a Tabun mimic) catalyzed by simple ami…

2015

We report herein a study of the hydrolysis of Tabun mimic DCNP in the presence of different amines, aminoalcohols and glycols as potential suitable organocatalysts for DCNP degradation. Experiments were performed in CD3CN in the presence of 5% D2O, which is a suitable solvent mixture to follow the DCNP hydrolysis. These studies allowed the definition of different DCNP depletion paths, resulting in the formation of diethylphosphoric acid, tetraethylpyrophosphate and phosphoramide species as final products. Without organocatalysts, DCNP hydrolysis occurred mainly via an autocatalysis path. Addition of tertiary amines in sub-stoichiometric amounts largely enhanced DCNP depletion whereas non-te…