One of the limiting steps to detecting traces of explosives at screening venues is effective collection of the sample. Wipe-sampling is the most common procedure for collecting traces of explosives, and standardized measurements of collection efficiency are needed to evaluate and optimize sampling protocols. The approach described here is designed to provide this measurement infrastructure, and...

A novel fluorescent amphiphilic cellulose nanoaggregates sensing system is designed and applied in detecting explosives in aqueous solution. Due to the maximized interaction between sensing material and analyte within the cellulose-based nanoaggregates, significantly enhanced sensitivity with 50-fold higher quenching efficiency is obtained.

Despite the resources dedicated since 2001 to training health providers in emergency and bioterrorism preparedness and response, the literature on the participation of physician assistants (PAs) is very limited. The purpose of this pilot study was to explore the training level and experiences of PAs in the diagnosis and treatment of chemical, biological, radiological, nuclear, and explosive age...

Microfluidic paper-based analytical devices (μPADs) are relatively new group of analytical tools. Work principles of such devices partially evolved from chromatographic techniques, particularly planar chromatography. Recently, analytical devices based on paper are subject of extensive research, mostly focused on fast and non-expensive biochemical analysis but also for screening of medical and e...

The development of versatile systems capable of providing rapid, portable, and inexpensive detection of explosives and energetic compounds are critically needed to offer enhanced levels of protection against current and future threats to homeland security, as well as satisfying a wide range of applications in the fields of forensic analysis, emergency response, and industrial hazards analysis. ...

Overview Stockpile management is a wide-ranging term that covers specific technical areas related to the safety and security of ammunition and explosives, in addition to issues such as the determination of stockpile size, types of stockpiles, and the management of ammunition in service. Effective stockpile management requires comprehensive planning in order to ensure that all activities related...

A series of oxygen-rich organic peroxide compounds each containing two bis(hydroperoxy)methylene groups is described. Energetic testing shows that these compounds are much less sensitive toward impact and friction than existing classes of organic peroxides. The compounds are highly energetic, which may lead to practical peroxide-based explosives.

This paper examines the effects of plyometric and resistance training on the explosive power and the amount of young male volleyball players’ strength in Guilan province. The participants include 45 volleyball players, 15-22 years old, which were randomly divided into three groups: two training groups and one control group. Among the two training groups, one was engaged in plyometric and the ...

The existence of explosive phase transitions in random (Erdös Rényi-type) networks has been recently documented by Achlioptas, D'Souza, and Spencer [Science 323, 1453 (2009)] via simulations. In this Letter we describe the underlying mechanism behind these first-order phase transitions and develop tools that allow us to identify (and predict) when a random network will exhibit an explosive tran...