Results 201 to 210 of about 60,850 (257)
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Electronic Structure and Geometry of NO2+ and NO2−
The Journal of Chemical Physics, 1969The electronic structure of NO2+ and NO2− has been investigated as a function of angle by means of ab initio MO LCAO SCF wavefunctions. Atomic orbitals used in the basis set are close to free-atom Hartree–Fock solutions. Several excited states, in addition to the ground states, have been obtained for the two ions.
Gary V. Pfeiffer, Leland C. Allen
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Indoor NO2 pollution and personal exposure to NO2 in two areas with different outdoor NO2 pollution
Environmental Monitoring and Assessment, 1986Indoor NO2 concentrations were measured in the kitchen, the living room and bedroom of 612 houses in two different areas in the Netherlands. In a group of housewives living in these homes, personal exposure to NO2 was measured. NO2 concentrations indoors were dependent on the presence or absence of (un)vented gas appliances.
Fischer, P. +2 more
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Roadside NO2/NOx and primary NO2 from individual vehicles
Atmospheric Environment, 2023Traffic-derived nitrogen oxides (NOx) is a major component of kerbside pollution in large cities and represent an important source of exposure and health risk to urban populations, especially during the use of roadside pave-ments. The ratio of ambient NO2/NOx (xNO(2)) varies widely in urban environments, influenced by relative source strengths, but ...
Peter Brimblecombe +5 more
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The HMO treatment of the ONO2, NNO2 and CNO2 groups
Tetrahedron, 1967Abstract Parameters have been chosen for the coulomb and resonance integrals for the HMO treatment of the ONO 2 , NNO 2 and CNO 2 groups, which correctly predict values of the dipole moments of nitric esters, nitramines and aromatic C-nitro compounds.
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Toxicology, 1994
The chemistry of NO2. is reviewed. Experimental results from both the liquid and gas phase, and from both aqueous and non-aqueous systems, are used to gain insight into the basic chemistry of this radical.
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The chemistry of NO2. is reviewed. Experimental results from both the liquid and gas phase, and from both aqueous and non-aqueous systems, are used to gain insight into the basic chemistry of this radical.
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2002
The soil of forest ecosystems can function as both, a source and a sink for atmospheric N2O, NO, and even NO2 (e.g. Butterbach-Bahl et al. 1998; Papen and Butterbach-Bahl 1999; Gasche and Papen 1999). The fluxes of NO and N2O observed at the soil/atmosphere interface are the result of simultaneous dynamic production and consumption processes taking ...
Rainer Gasche, Hans Papen
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The soil of forest ecosystems can function as both, a source and a sink for atmospheric N2O, NO, and even NO2 (e.g. Butterbach-Bahl et al. 1998; Papen and Butterbach-Bahl 1999; Gasche and Papen 1999). The fluxes of NO and N2O observed at the soil/atmosphere interface are the result of simultaneous dynamic production and consumption processes taking ...
Rainer Gasche, Hans Papen
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Postnatal tolerance to NO2 toxicity
Experimental and Molecular Pathology, 1982Abstract Nursing neonatal rats (10 days old) are remarkably resistant to the cytotoxic effects of nitrogen dioxide (NO 2 ). They survive well when exposed continuousty to 50 ppm, exhibiting only minor injury of the proximal alveolar Type 1 cells. Moderate injury and loss of ciliated cells and moderate accumulation of alveolar edema are observed in ...
R J, Stephens +3 more
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Validation of a diffusive sampler for NO2
Journal of Environmental Monitoring, 1999A diffusive sampler for NO2, Willems badge, was validated in laboratory experiments and field tests. The collecting reagent for NO2 in the sampler is triethanolamine, and the analysis is based on a modified colorimetric method, the Saltzman method. The analysis was performed by a flow injection analysis (FIA) technique.
A, Hagenbjörk-Gustafsson +3 more
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Study on the structure and property for the NO2+NO2− electron transfer system
Journal of Molecular Structure: THEOCHEM, 2001Abstract The structures and the properties of the NO2+NO2− electron transfer system are studied with ab initio calculations at the B3LYP/6-311+G∗ basis set level for the three selected structures: three species favor the structure of ‘head to head’. The nitrogen dioxide molecule separation distances computed using the DFT/B3LYP method were found to ...
Zhengyu Zhou +3 more
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Simultaneous measurements of No and No2 in the stratosphere
Planetary and Space Science, 1975Abstract Simultaneous measurements of NO and NO 2 in the stratosphere leading to an NO x determination have been performed by means of i.r. absorption spectrometry using the Sun as a source in the 5·2 μm band of NO and in the 6·2 μm band of NO 2 . The observed abundance of NO P peaks at 26 km where it is equal to (4·2 ± 1) × 10 9 cm −3 .
Ackerman, Marcel +5 more
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