Tobacco dust

In tobacco plants, tobacco dust can provide a nutrient source and also cause a drop in air washer water pH (thus automatic pH control may be necessary). In weaving plants, starch and other sizes can provide a nutrient source and lead to rapid fouling. 

Concern regarding the exposure of pregnant women to tobacco dust and smoke has existed since at least the middle of the nineteenth century. During the subsequent years many studies have reported the association of cigarette smoking with numerous problems of pregnancy. One of the most important observations in experimental... 

Rohde, W.A. Burley tobacco constituents. III. Acidic material of hurley tobacco dust RDM, 1966, No. 45, August 18, see www.rjrtdocs.com 500603871 -3874. 

Coleman, W.M. Ill, and T. A. Perfetti The role of amino acids and sugars in the production of volatile materials in microwave heated tobacco dust suspensions Beitr. Tabakforsch. Int. 17 (1997) 75-95. 

Attempts to destroy insect pests on crops have early origins, but the results (using mainly lead arsenate, tobacco dust, soap, or petroleum) were mainly dispiriting. The turning point occurred about 1940 through Paul Muller s discovery (in the Swiss firm, Geigy) of the insecticidal action of DDT. With this event, the modern era of insecticides was bom. 

Nicotine 7.26) and the tobacco dust of which it is the active constituent have long, and rather fruitlessly, been used on plants. Nicotine is a counter-selective... 

Tobacco Oxidant Zn-ethylenebisdithiocarbainate dust (variable) Fungicide 44 27... 

Bertinuson, T. A., H. LeCoultre, and W. C. Waterman. The inhibitory effect of zinc ethylene bisdithiocarbamate dust on weather fleck of Connecticut shade-grown tobacco. Tobacco Sci. 5 28-30, 1961. 

Uses Dusts, emulsions, and wettable powders for contact control of leaf rollers and other insects on vegetables and tobacco. 

Dust particles inhaled in tobacco smoke, together with bronchial mucus, must be removed from the airways by the ciliated epithelium. Ciliary activity, however, is depressed by tobacco smoke mucociliary transport is impaired. This depression favors bacterial infection and contributes to the chronic bronchitis associated with regular smoking. Chronic injury to the bronchial mucosa could be an important causative factor in increasing the risk in smokers of death from bronchial carcinoma. 

Jewelers and diamond cutters, however, were skeptical. To remove certain flaws, they had often heated diamonds, carefully packed in chalk dust and powdered charcoal, and had never experienced any loss. After several inconclusive experiments had been made by others, Maillard, a famous gem cutter, placed three diamonds, closely packed in charcoal dust, in the bowl of a tobacco pipe, and enclosed it in sheet iron inside a crucible filled with a lining of chalk dust and a fusible sand used for castings. After moistening the mixture with salt water and letting it dry, Maillard heated the crucible in Macquer s furnace. The contents soon became so fluid that it was necessary to allow the furnace to cool. 

As Maillard searched among the ash and molten material which had fallen through the grate, the academicians were confident that he would never see his diamonds again. When the airtight, glassy covering was broken away and the crucible opened, the tobacco pipe, the carbon dust, and the three diamonds were recovered intact. Hence it was evident that both heat and air were required for the destruction of the diamond (258, 260). 

Indoor air in homes and public buildings may contain significant and sometimes dangerous levels of arsenic from coal combustion (Section 3.24.2.3, (Finkelman et al., 2002)), tobacco smoke (Fowles and Dybing, 2003 Chang et al., 2005), or dust (Clayton et al., 1999 Schieweck et al., 2005). 

Tobacco smoke and tobacco smokeless products Wood dust... 

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