Shanghai Tobacco Group Beijing Cigarette Factory and Beijing Cigarette Factory | Date: 2006-11-21
Tobacco, cigar, cigarette, cut tobacco, lighters not of precious metal for smokers, cigarette case made of non-precious metal, cigarette paper, filter tip for cigarette, ashtray made of non-precious metal.
Shanghai Tobacco Group Beijing Cigarette Factory and Beijing Cigarette Factory | Date: 2006-12-26
Tobacco, cigars, cigarettes, pipe tobacco, lighters for smoking, cigarette cases made of non-precious metal, cigarette paper, filters for cigarettes, cigarette holders of non-precious metal, ashtrays of non-precious metal.
Shanghai Tobacco Group Beijing Cigarette Factory and Beijing Cigarette Factory | Date: 1998-10-13
Wang R.,Henan Agricultural University |
Shi H.,Henan Agricultural University |
Zhou J.,Beijing Cigarette Factory |
Bai R.,Beijing Cigarette Factory |
And 5 more authors.
Acta Tabacaria Sinica | Year: 2014
Samples of Binchuan burley tobacco, Dazhou sun-cured tobacco and Baofeng flue-cured tobacco were collected to investigate changes in TSNAs contents during storage and their response to different temperature treatment. Results showed that both total and individual TSNAs contents in both burley and sun-cured tobacco increased with increase of storage time. The most significant increase occurred in high temperature months, for example, from middle of April until August, especially for NNN in burley tobacco. Both total and individual TSNAs contents in flue-cured tobacco which had less nitrate contents were very low and showed non-significant changes after 45°C treatment. While both total and individual TSNAs contents in burley tobacco and sun-cured tobacco were much higher and increased rapidly after the treatment of 45°C, with nitrate decreasing slightly and nitrite rising significantly.
Teng F.,Nanjing University of Information Science and Technology |
Chen M.,Nanjing University of Information Science and Technology |
Li G.,Nanjing University of Information Science and Technology |
Teng Y.,Suzhou Institute of Trade and Commerce |
And 6 more authors.
Applied Catalysis B: Environmental | Year: 2011
The highly porous Co 3O 4 nanorods are prepared by a simple hydrothermal method, in which CO(NH 2) 2 is employed as precipitating agent, and K60 (PVP, polyvinylpyrrolidone) is used as surfactant to improve the stability of the nanoparticles. For comparison, the bulk Co 3O 4 is prepared by thermal decomposition of cobalt nitrate. The samples are characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (ED), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, N 2 adsorption, Thermogravimetric analysis (TG), H 2-temperature programmed reduction (TPR), CO-, CH 4-, and O 2-temperature programmed desorption (TPD). The catalluminescence (CTL) and catalytic properties of the samples are investigated extensively. The results show that the Co 3O 4 nanorods are composed of nanoparticles, and have a large number of pores with a narrow pore size distribution (1.5-7nm). Compared with the bulk Co 3O 4, the porous nanorods have a higher CTL intensity of CO oxidation, and a higher activity of CH 4 combustion especially at a higher gas hourly space velocity (GHSV), which has been ascribed to its porous structure and larger surface area. © 2011 Elsevier B.V.