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Transmission Raman Spectrometer design for the detection of opioids, concealed chemicals, and biological threats
(2021-07-08)
Raman spectroscopy (RS) is an excellent tool for quantitative and qualitative analysis that can be used to detect and characterize different types of substances. Transmission Raman Spectroscopy (TRS) has been used in ...
Synthesis of novel ferrocene complexes with androgens vectors, biological activity and their interactions with proteins
(2020-12-11)
Four novel complexes were synthetized by aldol condensation reaction and characterized by different spectroscopic techniques using ferrocenecarboxaldehyde as starting material, and using the hormones ( 3α-hydroxy ...
Detection and discrimination of high explosives on human hair by Raman scattering
(2020-05-29)
High explosives (HE) represent a high risk to the safety and health of the general population. Therefore, there is an ongoing demand for methods of analysis with limits of detection at trace levels for these hazardous ...
Flavonoid-ferrocene conjugate as new treatment for breast cancer
(2021-07-08)
Research in drug development for breast cancer treatment has been crucial, since traditional treatments have been associated with neurotoxicity and nephrotoxicity. Previous studies showed that when ferrocene is combined ...
Quantum cascade laser-grazing angle spectroscopy detection of high explosives deposited on various substrates using air spray
(2020-04-19)
The mid-infrared (MIR) laser reflectance of samples of high explosives (HEs) deposited on reflective and matte substrates using spray deposition was measured and used to generate multivariate (MVA) models for the analysis ...
Crystal structures of hemeproteins: Sulf and H2S myoglobin derivatives and Lucina pectinata Oxy (HbII-HbIII) and Oxy (HbIII-HbIII) systems
(2020-04-21)
As a gasotransmitter, hydrogen sulfide (H2S) biochemistry in humans is of pivotal importance. One relevant reaction of H2S in our bodies is its interaction with hemeproteins. The threshold of its beneficial/harmful effects ...
TNT and MO photodegradation in deionized and salt waters with visible light assisted by photoactivation of modified TiO2
(2020-05-22)
The release of munitions during military combat events or training exercises represents an alarming situation to the marine environment. Since nitroaromatic compounds (NACs) that are released from these weapons remain in ...
High explosives detection in international mail using See-Through Raman Spectroscopy assisted by multivariate analysis
(2020-12-09)
See-Through Raman Spectroscopy (STRS) was used for the non-invasive, non-destructive sample analysis of high explosives (HEs) in mail envelopes or flats. The method resulted in a safe and rapid analysis of HEs: ammonium ...
Adsorption of pollutants by spent-coffee-grounds composite beads
(2020-05-19)
The use of heavy metals in technological applications has led to detrimental effects on the
environment. Activated carbon is commonly used to remove pollutants but it is expensive.
Therefore, the research of low-cost ...
Development of sensitive analytical methods based on quantum cascade laser spectroscopy
(2021-07-09)
Quantum cascade laser (QCL) technology has enabled the development of more sensitive analytical methods based on mid-infrared spectroscopy due to high brightness and spectral resolution. The advantages of this technology ...