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Abstract  

In order to obtain a better understanding of the pyrolysis mechanism of urazole, molecular orbital (MO) calculations and evolved gas analysis were carried out. The MO calculations were performed using the density functional method (B3LYP) at the 6-311++G(d,p) levels by Gaussian 03. The geometrical structure of urazole and its tautomers were examined theoretically. Identification and real-time analysis of the gases evolved from urazole were carried out with thermogravimetry-infrared spectroscopy (TG-IR) and thermogravimetry-mass spectrometry (TG-MS). The evolved gases were identified as HNCO, N2, NH3, CO2, and N2O at 400 °C, but were different at other temperatures.

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Abstract  

1,2,4-triazole-3-one (TO) and guanidine nitrate (GN) have the potential to be used as alternative gas-generating agents. To obtain a better understanding of thermal decomposition properties of TO/GN mixtures, sealed cell differential scanning calorimetry, thermogravimetry–differential thermal analysis–infrared spectroscopy (TG–DTA–IR), and thermogravimetry–differential thermal analysis–mass spectrometry (TG–DTA–MS) were carried out. The endothermic peak and onset temperatures of TO/GN mixtures were lower than those of individual TO and GN. TG–DTA–IR and TG–DTA–MS showed that the mass of TO/GN mixtures decreased with heat generation and N2 evolved as the major gas during thermal decomposition. The interaction between TO and nitric acid from the dissociation of GN is proposed for the thermal decomposition of TO/GN mixtures.

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Abstract  

An effective means of detecting airborne radioactive aerosol plumes has been developed and tested on aircraft platforms. The Real-Time Airborne Radiation Analysis and Collection (RTARAC) system was mounted in the wing pod of a Navy P-3 where it sampled 20 cubic meters of air per minute on each of eleven sequentially advanced filters. A 140% intrinsic gemanium detector counted radioactive particles collected on the 15 cm circular filters in real-time. Gamma-energy spectrum and near real-time analysis of the sample were displayed on a laptop computer.

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asymmetric PCR and its uses in quantitative real-time analysis. PNAS 2004; 101: 1933–1938. 35 Hansen RD, Sorensen M, Tjonneland A, et al. XPA A23G, XPC Lys939Gln

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, Vicaut E , Qualitative real-time analysis by nurses of sublingual microcirculation in intensive care unit: the MICRONURSE study . Crit Care 2015 Nov 6 ; 19 : 388 . https://doi.org/10.1186/s13054-015-1106-3 . PMID: 26542952; PMCID: PMC4635966

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. They are using 2–3 seconds long time window for the classification, but for fast walking this time frame might contain more than one steps, which means it has a chance to lose step event information. The closest solution to the required real-time

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simultaneous and continuous real time analysis, is used. It can provide more information on the reaction sequences, type, and quantity of gases evolved during the decomposition process [ 8 – 10 ]. In addition, in present study, we used the multiple heating rate

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molecular mechanism of the subjects. Authors’ contribution MS contributed to data collection and/or processing. ATA contributed in concept preparation. AS performed supervision and provided critical review. FK performed real-time

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performed in triplicate. The threshold cycle (Ct) of each well and data acquisition were carried out using a software program from Real-Time Analysis Software Programme (Light Cycler ® 480 SW 1.5.0 SP4). The delta Ct (ΔCt) method was used for PCR single

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Thermal decomposition of acrylamide from polyacrylamide

Time-resolved pyrolysis with ion-attachment mass spectrometry

Journal of Thermal Analysis and Calorimetry
Authors: Yuki Kitahara, Ko Okuyama, Keita Ozawa, Takuya Suga, Seiji Takahashi, and Toshihiro Fujii

. Our EGA–IAMS system clearly identifies products at an intermediate time window on a real-time analysis basis. It should be noted that EGA–IAMS appears to allow the observation of species that form during the primary thermal degradation process

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