The Brady law, new techniques for tracing guns used in crimes by the federal Bureau of Alcohol , Tobacco and Firearmsand other efforts all led to the drop, Mr. Johnson said.
presents some unique features in comparison with voltammetric techniques for trace metal determinations.
The concept of coherency between layers and the techniques for tracing the design characteristics back to the requirements (i.e. traceability) are discussed with their implications for ergonomics.
Since its invention in the mid-1990s, the diffusive gradients in thin films (DGT) technique has rapidly become one of the most promising in situ sampling techniques for trace metal measurement in natural waters.
Earlier, our methodology was shown to be the most successful one as compared to the popular contemporary techniques for tracing relatively simple and primitive suite of applications contained within SPEC95 benchmark suite [1].
However, further efforts are necessary for the practical structural design of SLRSs, including the development of more reliable and widely suitable techniques for tracing complete equilibrium paths of structures, computer-added analysis and design for SLRSs, and suitable criteria to instruct structural designers on the stability design of SLRSs.
We applied the combination of both techniques for tracing 13C fluxes in real time from the site of 13CO2 fixation in a mature poplar leaf, into isoprene and respiratory CO2 emitted from different plant parts.
Plant VOC research relies on analytical techniques for trace gas analysis, usually based on gas chromatography and soft chemical ionization mass spectrometry.
As NMR methodology progresses toward understanding the mechanisms of allosteric transmission at the atomic level, the measurement of equilibrium H/D fractionation factors emerges as a method complementary to other NMR techniques for tracing allosteric communications within proteins and enzymes.
Despite many important advances in analytical techniques for trace element analyses in biological materials, such analyses are still commonly subject to significant errors due to mass interferences, high risk of contamination, and lack of suitable reference materials.
