Berlin, une cité de baraques [intérieur d'une maison], CN [cliché Central News photo service] USA : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59494

Berlin, une cité de baraques, CN [cliché Central News photo service] USA : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59495

Berlin, une cité de baraques, CN [cliché Central News photo service] USA : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59496

Fête de Jeanne d'Arc à New-York, CN [cliché Central News photo service] USA : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59497

Fête de Jeanne d'Arc à New-York, CN [cliché Central News photo service] USA : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59498

Fête de Jeanne d'Arc à New York, CN [cliché Central News photo service] USA : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59499

[Lucien] Lebaillif [nageur avec son maillot du CN Seine, participant aux épreuves de brasse des Jeux olympiques d'Anvers] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 60600

Canadian National (CN) records, 1974-1989.

Canadian National Railway Company (CN) was incorporated in 1919 as a Crown Corporation. The company was formed during the period after World War I and integrated two of the country’s largest railroads, Canadian Northern and Grand Trunk. CN is the largest rail network in Canada and the only transcontinental network in North America. As the use of railways declined, CN diversified its activities during the 1970s, becoming involved in telecommunications , hotels and oil exploration. The next decade saw a period of financial stability, however, the 1990s were a period of decreased profitability. As part of a restructuring to alleviate the company’s financial difficulties , it was privatized in 1995.

Censure.cn : Google s’attaque au marché chinois

Étude de cas

L'impact des consultations de amont. Les Ateliers du CN, Pointe-Saint-Charles

Affiche de projet terminal, baccalauréat en Urbanisme. Institut d'urbanisme, Université de Montréal.

Séries universelles dans CN et sur les surfaces de Riemann non compactes

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

Time resolved study of CN band emission from plasma generated by laser irradiation of graphite

Time and space resolved studies of emission from CN molecules have been carried out in the plasma produced from graphite target by 1.06 urn pulses from a Q-switched Nd:YAG laser. Depending on the laser pulse energy, time of observation and position of the sampled volume of the plasma, the features of the emission spectrum are found to change drastically. The vibrational temperature and population distribution in the different vibrational levels have been studied as functions of distance, time, laser energy and ambient gas pressure. Evidence for nonlinear effects of the plasma medium such as self focusing which exhibits threshold-like behaviour are also obtained. Temperature and electron density of the plasma have been evaluated using the relative line intensities of successive ionization stages of carbon atom. These electron density measurements are verified by using Stark broadening method.

Spatial and time resolved analysis of CN bands in the laser induced plasma from graphite

Analysis of the emission bands of the CN molecules in the plasma generated from a graphite target irradiated with 1-06/~m radiation pulses from a Q-switched Nd:YAG laser has been done. Depending on the position of the sampled volume of the plasma plume, the intensity distribution in the emission spectra is found to change drastically. The vibrational temperature and population distribution in the different vibrational levels have been studied as function of distance from the target for different time delays with respect to the incidence of the laser pulse. The translational temperature calculated from time of flight is found to be higher than the observed vibrational temperature for CN molecules and the reason for this is explained.