Results 51 to 60 of about 161,695 (169)

Cadmium concentrations in tobacco and tobacco smoke

open access: yesEcotoxicology and Environmental Safety, 1983
The amount of cadmium in tobacco depends on the variety and origin of the plant as well as on the analytical method used to determine cadmium. In the literature, cadmium concentrations in tobacco of between 0.5 and 5 ppm are reported. Modern German cigarette tobacco contains about 0.5-1.5 micrograms cadmium/cigarette.
H. Barkemeyer, G. Scherer
openaire   +3 more sources

Physiological and transcriptome analysis reveals the differences in nitrate content between lamina and midrib of flue-cured tobacco

open access: yesScientific Reports, 2022
Nitrate is an important precursor of tobacco-specific nitrosamines (TSNAs) and a remarkable difference in nitrate accumulation between lamina and midrib of flue-cured tobacco has long been observed.
Yuqing Feng   +5 more
doaj   +1 more source

How to Beat Science and Influence People: Policy Makers and Propaganda in Epistemic Networks [PDF]

open access: yesarXiv, 2018
In their recent book Merchants of Doubt [New York:Bloomsbury 2010], Naomi Oreskes and Erik Conway describe the "tobacco strategy", which was used by the tobacco industry to influence policy makers regarding the health risks of tobacco products. The strategy involved two parts, consisting of (1) promoting and sharing independent research supporting the ...
arxiv  

Maternal education and offspring birthweight for gestational age: the mediating effect of smoking during pregnancy [PDF]

open access: yesarXiv, 2020
Background Small for gestational age (SGA) birthweight, a risk factor of infant mortality and delayed child development, is associated with maternal educational attainment. Maternal tobacco smoking during pregnancy could contribute to this association. We aimed to quantify the contribution of maternal smoking during pregnancy to social inequalities in ...
arxiv  

Cutting the Error by Half: Investigation of Very Deep CNN and Advanced Training Strategies for Document Image Classification [PDF]

open access: yes, 2017
We present an exhaustive investigation of recent Deep Learning architectures, algorithms, and strategies for the task of document image classification to finally reduce the error by more than half. Existing approaches, such as the DeepDocClassifier, apply standard Convolutional Network architectures with transfer learning from the object recognition ...
arxiv   +1 more source

THE TOBACCO POISON. [PDF]

open access: yesJournal of the American Medical Association, 1887
Dear Sir: —The remarkable case of irascibility or mental disorder from tobacco, reported by Dr. Batten, is not so exceptional as it seems, for I know a similar instance in which the fumes of tobacco irritated the brain and mind to such a degree that the afflicted gentleman is so forcibly impelled to assault the offending smoker as to require a very ...
openaire   +3 more sources

Response of rhizosphere soil physicochemical properties and microbial community structure to continuous cultivation of tobacco

open access: yesAnnals of Microbiology
Purpose The health of rhizosphere soil microorganisms is an important indicator to evaluate soil quality. Therefore, understanding the response of rhizosphere soil microorganisms to tobacco crop succession is crucial for promoting the sustainable ...
Bo Gong   +7 more
doaj   +1 more source

Genome-wide identification and analysis of WD40 proteins reveal that NtTTG1 enhances drought tolerance in tobacco (Nicotiana tabacum)

open access: yesBMC Genomics
Background WD40 proteins, which are highly prevalent in eukaryotes, play important roles in plant development and stress responses. However, systematic identification and exploration of WD40 proteins in tobacco have not yet been conducted.
Lijun Meng   +10 more
doaj   +1 more source

Full genome sequence analysis and putative host-shifting of Milk vetch dwarf virus infecting tobacco (Nicotiana tabacum) in China

open access: yesVirology Journal, 2019
Background Tobacco production in China has been affected by plant viruses with Milk vetch dwarf virus (MDV) as a recent invader posing serious concern.
Ali Kamran   +8 more
doaj   +1 more source

AS TO TOBACCO AND AVIATION [PDF]

open access: yesJAMA: The Journal of the American Medical Association, 1918
To the Editor: —The editorial on "The Physical Qualities of Aviators" (The Journal, April 27, 1918, p. 1229) condemns the use of alcoholics by fliers. I have noticed the same condemnation in other articles on the subject. On the face of it, it seems so plain that alcoholic narcosis has no place in so hazardous a task that it is almost unnecessary to ...
openaire   +2 more sources

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