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Showing 1 to 20 of 29 for “"hydrogen cyanide"”.
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Spectroscopy of vibrationally hot molecules : hydrogen cyanide and acetylene
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1992.
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EVLA imaging of methanimine and hydrogen cyanide in Arp 220
… in the vibrationally excited($\nu_2=1$) state of hydrogen cyanide(HCN) toward the nearest Ultraluminous Infrared Galaxy, Arp 220, taken with the Expanded Very Large Array (EVLA) in A configuration. The 5289.8 MHz \meth\ line was detected in emission toward the western nucleus, but not toward the …
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Phytochemical Investigations of Fungi: Hydrogen-Cyanide, Indole Alkaloids and Carbohydrates
… of fungal secondary metabolites including hydrogen cyanide, indole alkaloids and reserve carbohydrates were investigated. The major emphasis of this study concerned the taxonomic significance and the mechanism of HCN production by microorganisms, especially fungi.
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On quantification of hydrogen cyanide in residential fire environments and its implications on occupant tenability
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Rigorous Studies of the Electronic Structures of Molecules and Molecular Complexes. Electron Correlation Effects in the Hydrogen Bonding of Small Dimeric Systems (Hydrogen Fluoride, Carbon Monoxide, Nitrogen, Hydrogen Cyanide)
… correlation in the weakly interacting dimers of hydrogen fluoride with the nitrogen molecule, carbon monoxide and hydrogen cyanide are presented. While linear equilibrium structures are found for these complexes, an attempt is made to elucidate their vibrationally averaged structures. It is found …
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Removal of Cyanogenic Glycosides in Whole Flaxseed via Lactobacillaceae Fermentation
… which first cleave glucose from CG then release hydrogen cyanide (HCN) from the cyanohydrin, respectively. Hydrogen cyanide can affect mammalian respiratory systems and can also influence nutrient absorption from food. Thus, CGs should be removed from flaxseed. In this study, whole flaxseed (35 …
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Occupant tenability in large-scale residential fires: an analysis of heat exposure, toxic gases, water application, and fire-service ventilation
… gases (carbon monoxide, carbon dioxide, and hydrogen cyanide) on occupants in the fire environments. The large-scale experiments also studied the influence of different firefighting ventilation and water application techniques. The first large-scale study aimed to study vertical ventilation …
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Molecular and transcriptomic studies of quorum sensing in Chromobacterium subtsugae
… the hcnABC genes coding for production of hydrogen cyanide. We also demonstrate that the cross-induction of hydrogen cyanide by B. thailandensis AHLs provides a competitive advantage to C. subtsugae. Our results also show that C. subtsugae can respond to non-cognate C8-HSL signal and …
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SOLVATION OF ORGANIC CATIONS IN THE GAS PHASE AND WITHIN MOLECULAR CLUSTERS
… of the solvent. In nature, organic ions can form hydrogen bonds with solvents. An insight into basic molecular interactions is required to be extracted from the gas phase energies and structures of the solvated organic ions. Therefore, the stepwise hydration experiments of benzene.+, C3H3+, …
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Exploring the Genomic, Plant Growth Promoting, and Biocontrol Potential of a novum species 'Candidatus Pseudomonas auctus' JDE115 with its description
… glucanase, protease, cellulase, siderophores, hydrogen cyanide, and volatile organic compounds (VOCs) such as dimethyl disulfide (DMDS) and 1-undecene. Greenhouse experiments confirmed that JDE115-treated soybean plants remained disease-free, while untreated controls succumbed to infection. …
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Theoretical and experimental studies of optically pumped molecular gas lasers
… from such a system. We identified acetylene and hydrogen cyanide as potential laser gases that can be pumped with lasers emitting in the attractive telecommunication C band region at about 1.5 microns. Estimations and fluorescence measurements suggest the possibility of lasing in the 3 micron …
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Polymer impregnation of concrete as a means of improving corrosion resistance
… liquid, and then into the sewer atmosphere as hydrogen sulphide, which is then in turn oxidised to sulphuric acid. Hydrogen sulphide gas is well known for its characteristic "rotten eggs" odour, but more important although less known, for its extreme toxicity. The maximum safe concentration in …
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Electronic signatures of large amplitude motions
… acetylene<-->vinylidene (HCCH<-->CCH2), and hydrogen cyanide$hydrogen isocyanide (HCN<-->HNC). The nuclear quadrupole hyperne structures of HCN and HNC are distinct at their equilibrium geometries due to the dissimilar natures of bonding in the vicinity of the 14N nucleus. High resolution …
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Part I: In-situ fluorometric quantification of microalgal neutral lipids Part II: Thermal degradation behavior of investment casting polymer patterns
… on metal casting quality. The reduction in toxic hydrogen cyanide (HCN) generated during thermal decomposition of polyurethane pattern was achieved by increasing either oxidant level or residence time in heated zone. Thermal degradation kinetics of the pattern materials were examined with a …
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Identification of volatile organic compounds in the early stages of fire from commercial products
… health problems. Acute asphyxiants such as hydrogen cyanide, carbon monoxide and carbon dioxide were identified from the FTIR analysis of decomposition in air, while carcinogenic and potentially carcinogenic volatiles, such as benzene and various polycyclic aromatic hydrocarbons, were …
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Wideband and fast THz spectrometer using dual-frequency-comb on CMOS
… molecules reaches ppm level (e.g. 3 ppm for hydrogen cyanide (HCN)), or 10 ppt level if gas pre-concentration with a typical gain of 10 5 is used.
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Isolation, identification and characterization of Cleome Gynandra L. bacterial seed endophytes from Northern Namibia
… fixation (40%), fluorescence production (10%), hydrogen cyanide production (30%), indole acetic acid (IAA) production (100%), phosphate solubilization (15%) and siderophore production (80%). Phylogenetic analysis showed that all the isolates (excluding Phytobacter ursingii) belonged to the …
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Volatile organic compounds in the New England troposphere: Atmospheric chemistry and measurement techniques
… GC instrument was developed for measurement of hydrogen cyanide (HCN) in the lower atmosphere. Its major features include a cold temperature analyte enrichment system, a robust porous polymer stationary phase capillary column and a flame thermionic detector. The instrument was deployed for a I …
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