Zobrazeno 1 - 10
of 76
pro vyhledávání: '"O. Menzel"'
Autor:
John Byron Farmer, Timothy O. Menzel, Christopher White, William Beghun, Jerry Thomas Looney, Jacson Lee Moody
Publikováno v:
The American Midland Naturalist. 186
The purpose of this project was to isolate and describe the behaviors of individuals of two ant species, Aphaenogaster carolinensis Wheeler and Nylanderia faisonensis Forel, during their interference interactions, and to relate those to effects on co
Autor:
Sergey Gortschakow, Steffen Franke, K. O. Menzel, Ralf Methling, Thierry Delachaux, Markus Abplanalp, Ralf-Patrick Sutterlin
Publikováno v:
IEEE Transactions on Plasma Science. 45:2099-2107
The electrode surface temperatures of Cu–Cr butt electrodes exposed to vacuum arcs with sinusoidal currents of 10–20 kA and under external axial magnetic field were determined. Different experimental techniques were applied that can be distinguis
Autor:
Steffen Franke, K. O. Menzel, R. Methling, Sergey Gortschakow, Ralf-Patrick Sutterlin, Markus Abplanalp, Thierry Delachaux
Publikováno v:
Plasma Physics and Technology Journal. 4:16-19
The Relationship between Soil Chemistry and the Occurrence ofEchinacea laevigatain Northeast Georgia
Publikováno v:
Natural Areas Journal. 36:68-71
Echinacea laevigata, or smooth coneflower, is a federally listed endangered species found in open woods and human maintained clearings, including roadsides and utility rights of way. The species is disjunctly distributed in the eastern United States,
Publikováno v:
IEEE Transactions on Plasma Science. 41:735-739
Dust-density wave fields in radio-frequency discharges under microgravity conditions exhibit complex spatiotemporal patterns. One of the most remarkable features, which reflects this behavior, is the occurrence of so-called frequency clusters, i.e.,
Publikováno v:
IEEE Transactions on Plasma Science. 41:769-773
In complex plasmas, self-excited dust-density waves (DDWs) are observed below a critical gas pressure. Under microgravity conditions, the dust cloud fills the entire discharge volume so that extended wave fields can be generated. Here, we study the r
Publikováno v:
2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV).
The optical investigation of arcs in transverse magnetic field (TMF) vacuum interrupters is difficult due to the strong motion of the constricted arc in the magnetic field. In order to determine a first estimate of temperature and pressure distributi
Autor:
R. Methling, St. Franke, M. Abplanalp, K. O. Menzel, Sergey Gortschakow, Ralf-Patrick Sutterlin, Thierry Delachaux
Publikováno v:
2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV).
The present contribution reports on investigations of electrode temperatures for Cu-Cr butt electrodes exposed to vacuum arcs with sinusoidal currents of 10–20 kA. Near infrared spectroscopy was carried out by means of a fiber optics spectrometer w
Autor:
Timothy O. Menzel
Publikováno v:
Journal of Insect Behavior. 25:486-493
Individual ants of Aphaenogaster carolinensis Wheeler were placed in two way combinations with four sympatric ant species (Aphaenogaster lamellidens Mayr, Crematogaster lineolata Say, Pachycondyla chinensis Emery and Prenolepis imparis Say) to determ
Publikováno v:
IEEE Transactions on Plasma Science. 38:842-846
Dust density waves (DDWs) are compressional modes that are often excited by subsonic ion flows in dusty plasmas. Previous experiments relying on imaging of only the dust revealed that they can propagate parallel to the ion flow direction or at an obl