Zobrazeno 1 - 10
of 158
pro vyhledávání: '"H. C. Siegmann"'
Autor:
H. C. Siegmann, Hendrik Bluhm
Publikováno v:
Surface Science. 603:1969-1978
Experimental surface science with aerosol particles under atmospheric conditions is becoming a realistic possibility. The first part of this critical review focuses on nano-scopic aerosols generated in combustion of organic fuels at ambient pressures
Autor:
Wayne R. Ott, H. C. Siegmann
Publikováno v:
Atmospheric Environment. 40:821-843
This study employed two continuous particle monitors operating on different measurement principles to measure concentrations simultaneously from common combustion sources in indoor, outdoor, and in-transit settings. The pair of instruments use (a) ph
Publikováno v:
Atmospheric Environment. 38:4957-4968
Several studies regarding particulate matter in air pollution have been performed in Mexico City, but none have focused on environment exposure to particle-bound polycyclic aromatic hydrocarbons (PPAH), which are related to the occurrence of cardiopu
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 126:191-202
The formation of carbonaceous particles in laminar, atmospheric pressure diffusion flames is investigated using laser ionization time-of-flight mass spectroscopy and on-line analysis of nascent-particle properties while the particles are still in gas
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 19:1-8
The dynamics of nanoparticles in a carrier gas are governed by the physical and chemical nature of the surface. The total surface area can be divided into an “active” and a “passive” part. The active surface is the surface on which transfer o
Publikováno v:
Atmospheric Environment. 34:443-451
Suspended particles with a diameter below 1 μm act as vehicles transporting toxic chemicals into the human respiratory system. It is therefore of interest to record the intensity of these particles and to determine the source from which they were em
Autor:
H. C. Siegmann, Yves Idzerda, Joachim Stöhr, Ivan K. Schuller, Stuart S. P. Parkin, Jeffrey B. Kortright, David D. Awschalom, S. D. Bader
Publikováno v:
Journal of Magnetism and Magnetic Materials. 207:7-44
Current and anticipated future research frontiers in magnetism and magnetic materials are discussed from a perspective of soft X-ray synchrotron utilization. Topics covered include dimensionality (including e!ects of spatial dimensions and di!ering t
Publikováno v:
Indoor and Built Environment. 8:246-254
Indoor and outdoor concentrations of airborne fine parti cles from internal combustion engines have been mea sured over periods of 24 h with a time resolution of 10 s. With this time series, the ventilation air exchange rate of different rooms has be
Publikováno v:
Environmental Science & Technology. 33:1946-1952
The authors present new tools and a complete setup with which the submicron particles, emitted from combustion processes, can be measured and classified according to their chemical nature even in the field. Diesel engines are the predominant source o
Publikováno v:
Journal of Aerosol Science. 30:217-225
We show that the fuel additive ferrocene leads to the formation of condensation nuclei in the combustion zone prior to the formation of carbonaceous particles. The condensation nuclei most likely are iron oxides. The carbonaceous matter preferentiall