Cannabis is the most widely used illicit drug in the world. Delta-9-tetrahydrocannabinol (Δ9-THC) is the main psychoactive component of cannabis and its effects have been well-studied. However, cannabis contains many other cannabinoids that affect brain function. Therefore, these studies investigated the effect of cannabis smoke exposure on locomotor activity, rearing, anxiety-like behavior, an...

OBJECTIVE To determine prevalence and factors associated with strictly enforced smoke-free car policies among smoking parents. METHODS As part of a cluster, randomized controlled trial addressing parental smoking, exit interviews were conducted with parents whose children were seen in 10 control pediatric practices. Parents who smoked were asked about smoking behaviors in their car and receip...

BACKGROUND AND AIMS A major germination-promoting chemical in smoke-water is 3-methyl-2H-furo[2,3-c]pyran-2-one (karrikinolide, KAR(1)). However, not all species that germinate in response to smoke-water are responsive to KAR(1), such as Tersonia cyathiflora (Gyrostemonaceae). In this study, a test was made of whether two Gyrostemon species (Gyrostemonaceae) that have previously been shown to r...

we have produced a spectrum of limb defects in developing mouse embryos by exposing the mother to smoke from cigarettes with different nicotine concentrations, ethanol, and a combination of ethanol and cigarette smoke. the critical time of exposure was determined to be during day 10 of gestation (vaginal plug=day 0). this time is prior to the critical events which occur between the apical ectod...

An analysis of the requirements for mechanical smoke exhaust in large space buildings was made and some experiments in a fire test atrium have been performed. It can be concluded that the temperature of smoke in large space building fire is usually quite low which makes them easy to descend and to mix with air. Usually it’s difficult to control the descending of a smoke layer effectively when t...

In vitro analysis of fresh smoke is an important part of cigarette testing because the exposure methods employed may reflect human smoke exposure. Whole smoke is a dynamic system and has to be handled accordingly. In a few seconds smoke changes its properties. Therefore, the period of time until the smoke is in contact with cells has to be kept as short as possible. The same preconditions need ...

The objective of this project was to assess the prevalence of (1) tobacco smoke exposure at home among children with asthma and (2) efforts to quit smoking by their parents. We employed a cross sectional survey of 622 parents of children diagnosed by a doctor with asthma. Seventy-five percent of parents reported smoke-free homes. Overall, 85% of parents pledged to keep smoke-free homes, 92% in ...

Results from a recent smoke particle size measurement experiment conducted on the International Space Station (ISS) are presented along with the results from a model of the transport of smoke in the ISS. The experimental results show that, for the materials tested, a substantial portion of the smoke particles are below 500 nm in diameter. The smoke transport model demonstrated that mixing domin...

INTRODUCTION This is the first study to examine the prevalence of self-reported smoke-free rules for private cars and homes before and after the passage of a smoke-free vehicle law. METHODS Data were examined for 13,461 Maine adults aged 18 or older who participated in the Behavioral Risk Factor Surveillance System, a state-based telephone survey covering health topics. Self-reported smoke-fr...