These findings are specific to the Minnesota Adolescent Community Cohort study, a longitudinal telephone survey of youth less than 18 years old. The probability of an adolescent as young as 12 years of age buying cigarettes from a commercial source in the past month decreased significantly from 36% at baseline to 22% after three years.
In sharp contrast, the probability of their obtaining cigarettes from a social source in the previous month during the same time period increased significantly from 54% to 76%. “Although the use of social sources for cigarettes may increase when the commercial supply of cigarettes is restricted, the total amount of youth smoking seems to be reduced by increased commercial restrictions” comments Dr. Widome, the corresponding author.
These results are important because they indicate a decreasing access to commercial sources of cigarettes. It is well established that, apart from illegally buying their tobacco from commercial sources, underage smokers also obtain their tobacco from social sources like friends, relatives, older adolescents, and adults. For 14 to 18 year old minors in the US, the usual sources of cigarettes are a store (23.5%) or vending machine (1.1%); giving someone else money to buy them (29.9%); borrowing them from someone else (30.4%); stealing them (4.4%); or getting them in some other way (10.7%), which includes via the internet.
The good news in Widome et al.’s findings is that adolescents who obtained cigarettes from social sources were less likely to become heavy smokers compared to youth who bought their cigarettes from commercial sources.
David Evans | alfa
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
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26.04.2017 | Materials Sciences
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26.04.2017 | Physics and Astronomy