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Common Sense Emergency Response
Published in Robert A. Burke, Common Sense Emergency Response, 2020
Xenon (Xe). Xenon is a gaseous, nonmetallic element from family eight. It is a colorless, odorless gas or liquid. It is a gas at standard temperatures and pressures. Xenon is nonflammable and nontoxic but is an asphyxiate and will displace oxygen in the air. The boiling point is −162°F. The vapor density is 05.987, and it is heavier than air. It is chemically unreactive but not completely inert. The 4-digit identification number is 2036 for compressed gas and 2591 for cryogenic liquid. Xenon is used in luminescent tubes, flash lamps in photography, lasers, and as an anesthetic.
Applied Chemistry and Physics
Published in Robert A. Burke, Applied Chemistry and Physics, 2020
Xenon, Xe, LF/LR Xenonis a gaseous, nonmetallic element of family eight. It is a colorless and odorless gas or liquid. It is a gas at standard temperatures and pressures. It is nonflammable and nontoxic, but it is an asphyxiant and displaces oxygen in the air. The boiling point is −162°F. The vapor density is 05.987, which is heavier than air. It is chemically unreactive; however, it is not completely inert. The UN 4-digit identification number is 2036 for the compressed gas and 2591 for the cryogenic liquid. Xenon is used in luminescent tubes, flash lamps in photography and lasers and as an anesthesia.
Lights
Published in David Wyatt, Mike Tooley, Aircraft Electrical and Electronic Systems, 2018
Strobe lights are formed from small diameter (typically 5 mm) sealed quartz or glass envelopes/tubes filled with xenon gas, see Fig. 12.1. Power from the aircraft bus is converted into a 400V DC supply for the strobe. The tube is formed into the desired shape to suit the installation; Fig. 12.2 is a wing tip anti-collision light, normally located behind a clear plastic protective cover. Xenon is an inert (or noble) gas, chemically very stable, and has widespread use used in light-emitting devices, e.g. aircraft anti-collision lights. The emission of light is initiated by ionizing the xenon gas mixture by applying a high voltage across the electrodes.
Highly selective detection of Fe3+ and nitro explosives by a bifunctional sensor based on Cd(II) complex
Published in Inorganic and Nano-Metal Chemistry, 2022
Bo Zhao, Hao Liu, Yanan Gu, Qiaozhen Sun
All the reagents and solvents for synthesis and analysis were commercially available. Elemental analysis (C, H contents) was measured on a Perkin-Elmer 240 analyzer. Infrared Resonance (IR) spectrum was recorded on a Vector 22 Bruker spectrophotometer with KBr pellets in the 4000 − 400 cm−1 regions at room temperature. Thermogravimetric analyses (TGA) were performed on a Perkin − Elmer thermal analyzer at a heating rate of 10 °C/min under nitrogen atmosphere. Powder X-ray diffraction (PXRD) patterns were recorded on a Rigaku D/max-2550 X-ray diffractometer with graphite monochromatic Cu-Ka (1.54056 Å) radiation at 40 kV/250 mA at room temperature. Luminescence spectra of the samples were recorded on a FLS920 spectrophotometer with a xenon arc lamp as the light source at room temperature. X-ray photoelectron spectra (XPS) were obtained by a Thermo Scientific Escalab250Xi spectrometer. UV − Vis spectra were obtained using a UV − Vis spectrophotometer with a dissolution cell of 10 mm path.
Redox, spectroscopic, photo-induced ligand exchange, and DNA interaction studies of a new Ru(II)Pt(II) bimetallic complex
Published in Journal of Coordination Chemistry, 2018
Avijita Jain, Kaitlyn R. Wyland, Denali H. Davis
The photo-induced ligand exchange was determined by monitoring the changes in the electronic absorption spectrum of the complex as a function of irradiation time in water. Photolysis experiments were performed using an Oriel 450 W xenon arc lamp. The light was passed through a 550 nm cutoff filter. Figure 5 displays changes in the electronic absorption spectra of [Ru(biq)2(dpp)PtCl2](PF6)2 in water upon irradiation time for 0–80 s. The photolysis of the complex resulted in a decrease in the MLCT band centered at 545 nm and the appearance of a band centered at 590 nm, consistent with the formation of complex [Ru(biq)2(H2O)2]2+. The increase in absorbance at 339 nm is attributed to the formation of complex [Ptdpp(H2O)2]2+, consistent with previous reports [46]. The isosbestic points were observed at 357 and 573 nm. The designed Ru(II)Pt(II) complex was found to be inert to ligand substitution in the dark at room temperature for 24 h. The kinetics of the ligand exchange reaction was measured by plotting change in absorbance at 546 nm as a function of irradiation time (inset, Figure 5).
Effect of various factors and hygrothermal ageing environment on the low velocity impact response of fibre reinforced polymer composites- a comprehensive review
Published in Cogent Engineering, 2023
Oshin Fernandes, Jyoti Dutta, Yogeesha Pai
Kim et al. (2005) studied the damage mechanisms and compressive residual strength variation of glass/phenolic laminate by LVI loading under accelerated ageing environment. Accelerated ageing was conducted which consisted of xenon arc lamp irradiation at 60 ℃ and 60% humidity for 250 cycles (500 h.), 500 cycles (1000 h.), and 750 cycles (1500 h.). The results demonstrate that failure initiation energy and resultant compressive strength decrease as ageing time increased. Surface degradation due to ultraviolet light results in reduction of failure initiation energy as ageing cycles increase. The damage processes observed in the damage area were matrix cracking, delamination, fibre breakage, and finally penetration.