scholarly journals Chemical detection of explosives in soil for locating buried landmine

2021 ◽  
Author(s):  
Radhakrishna Prabhu ◽  
Shruti Karnik
Keyword(s):  
Chemical Detection ◽  
Detection Of Explosives

Tropolone-Based Treatments for Visualising Latent Fingermarks on Porous Surfaces

2019 ◽  
Author(s):  
Clara M. Agapie ◽  
Melissa Sampson ◽  
William Gee
Keyword(s):  
Amino Acids ◽  
Uv Radiation ◽  
Membered Ring ◽  
Diazonium Salts ◽  
Chemical Detection ◽  
Latent Fingerprints ◽  
Porous Surfaces

The work describes a new chemical means of visualising latent fingerprints (fingermarks) using tropolone. Tropolone reacts with amino acids within the fingermark residue to form adducts that absorb UV radiation. These adducts provide useful contrast on highly-fluorescent prous surfaces will illuminated with UV radiation. The conjugated seven-membered ring of the tropolone adduct can be reacted further diazonium salts, which is demonstrated here with formation of two dyes. The methodology is extremely rapid, occurring in minutes with mild heating, and can be applied before ninhydrin in a chemical detection sequence. <br>

scholarly journals Using Satellite Data for CBRN (Chemical, Biological, Radiological, and Nuclear) Threat Detection, Monitoring, and Modelling

2021 ◽  
Author(s):  
Gary Sutlieff ◽  
Lucy Berthoud ◽  
Mark Stinchcombe
Keyword(s):  
Satellite Data ◽  
Meteorological Data ◽  
Atmospheric Composition ◽  
Chemical Detection ◽  
List Type ◽  
Data Types ◽  
Wide Range ◽  
Future Technologies ◽  
The Impact ◽  
Near Future

Abstract CBRN (Chemical, Biological, Radiological, and Nuclear) threats are becoming more prevalent, as more entities gain access to modern weapons and industrial technologies and chemicals. This has produced a need for improvements to modelling, detection, and monitoring of these events. While there are currently no dedicated satellites for CBRN purposes, there are a wide range of possibilities for satellite data to contribute to this field, from atmospheric composition and chemical detection to cloud cover, land mapping, and surface property measurements. This study looks at currently available satellite data, including meteorological data such as wind and cloud profiles, surface properties like temperature and humidity, chemical detection, and sounding. Results of this survey revealed several gaps in the available data, particularly concerning biological and radiological detection. The results also suggest that publicly available satellite data largely does not meet the requirements of spatial resolution, coverage, and latency that CBRN detection requires, outside of providing terrain use and building height data for constructing models. Lastly, the study evaluates upcoming instruments, platforms, and satellite technologies to gauge the impact these developments will have in the near future. Improvements in spatial and temporal resolution as well as latency are already becoming possible, and new instruments will fill in the gaps in detection by imaging a wider range of chemicals and other agents and by collecting new data types. This study shows that with developments coming within the next decade, satellites should begin to provide valuable augmentations to CBRN event detection and monitoring. Article Highlights There is a wide range of existing satellite data in fields that are of interest to CBRN detection and monitoring. The data is mostly of insufficient quality (resolution or latency) for the demanding requirements of CBRN modelling for incident control. Future technologies and platforms will improve resolution and latency, making satellite data more viable in the CBRN management field

Utilizing insect behavior in chemical detection by a behavioral biosensor

2011 ◽  
Vol 6 (2-3) ◽  
pp. 109-112 ◽  
Author(s):  
G. Mandela Fernández-Grandon ◽  
Robbie D. Girling ◽  
Guy M. Poppy
Keyword(s):  
Insect Behavior ◽  
Chemical Detection

scholarly journals Surface acoustic wave devices for chemical sensing and microfluidics: a review and perspective

2017 ◽  
Vol 9 (28) ◽  
pp. 4112-4134 ◽  
Author(s):  
David B. Go ◽  
Massood Z. Atashbar ◽  
Zeinab Ramshani ◽  
Hsueh-Chia Chang
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Chemical Sensing ◽  
Chemical Detection ◽  
Microfluidic Platforms ◽  
Acoustic Wave Sensors ◽  
Acoustic Wave Devices ◽  
Wave Sensors

Surface acoustic wave sensors and microfluidic platforms enable effective chemical detection and sample manipulation.

Chemical Detection of Helium formed in Beryllium by Gamma Rays

Nature ◽  
1937 ◽  
Vol 139 (3521) ◽  
pp. 712-713 ◽  
Author(s):  
F. A. PANETH ◽  
E. GLÜCKAUF
Keyword(s):  
Gamma Rays ◽  
Chemical Detection
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