973 resultados para Commerce Motor Car Company


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DUE TO COPYRIGHT RESTRICTIONS ONLY AVAILABLE FOR CONSULTATION AT ASTON UNIVERSITY LIBRARY AND INFORMATION SERVICES WITH PRIOR ARRANGEMENT

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1917-1928 called [no.] 1-12.

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Photo album title: Detroit to San Francisco over Lincoln Highway. May 27-June 18, 1915. Henry B. Joy A.F. Bement; E. Eisenhut

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Men lowering frame of automobile. On verso: 1934. Published in Robert Crudin's "Many and One: A Social History of the United States," New York, Prentice Hall, 1980

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Measurements in the exhaust plume of a petrol-driven motor car showed that molecular cluster ions of both signs were present in approximately equal amounts. The emission rate increased sharply with engine speed while the charge symmetry remained unchanged. Measurements at the kerbside of nine motorways and five city roads showed that the mean total cluster ion concentration near city roads (603 cm-3) was about one-half of that near motorways (1211 cm-3) and about twice as high as that in the urban background (269 cm-3). Both positive and negative ion concentrations near a motorway showed a significant linear increase with traffic density (R2=0.3 at p<0.05) and correlated well with each other in real time (R2=0.87 at p<0.01). Heavy duty diesel vehicles comprised the main source of ions near busy roads. Measurements were conducted as a function of downwind distance from two motorways carrying around 120-150 vehicles per minute. Total traffic-related cluster ion concentrations decreased rapidly with distance, falling by one-half from the closest approach of 2m to 5m of the kerb. Measured concentrations decreased to background at about 15m from the kerb when the wind speed was 1.3 m s-1, this distance being greater at higher wind speed. The number and net charge concentrations of aerosol particles were also measured. Unlike particles that were carried downwind to distances of a few hundred metres, cluster ions emitted by motor vehicles were not present at more than a few tens of metres from the road.

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Dedication.--Introduction: The enchanted woods.--Pisa and the Campo Santo.--Switzerland again.--Tuscan churches in summer.--Arles.--Nymphs and a river god.--Brive-la-Gaillarde.--Of Paris and the exhibition.--Trent.--The motor-car and the genius of places.--The ilex woods and the anchorites.--German fir trees.--Compiègne and Fontainebleau.--The forest of the Antonines.--Mont St. Michel.--A walk in the Maremma.--Les Charmettes.--In the Euganean hills.--The hospitality of the Black Madonna.--The holy year at Ravenna.--The Generalife.--Couci-le-Château.--The tapestry at Angers.--Germany once more.--The carillon.--The cardinal's villa.--In Gascony.--Era già l'ora.--All souls' day at Venice.--Et in Arcadia.