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...

This article reviews data from experimental and epidemiologic studies on passive smoking and makes 12 recommendations for further study. The physicochemical nature of passive smoke, the smoke inhaled by nonsmokers, differs significantly from the mainstream smoke inhaled by the active smoker. At present, measurement of urinary cotinine appears to be the best method of assessing exposures to pass...

OBJECTIVES Students, faculty, and staff at a Pacific Northwest public university were surveyed one year after enactment of a smoke-free campus policy. Objectives were to assess levels of support for a smoke-free campus, ascertain exposure levels to outdoor tobacco smoke, and identify correlates of policy support. METHOD A 2013 Web-based survey included 5691 students (response rate 26%) and 20...

Inhalation of cigarette smoke is known to impair pulmonary mucociliary clearance. Active ion transport by airway epithelium plays an important role in maintaining effective mucociliary clearance by regulating the volume and composition of the airway secretions. To determine the effect of cigarette smoke on airway epithelial ion transport, the electrical properties and transepithelial Na and Cl ...

In high-rise building fire, a large amount of fresh air will be pressurized into the fire floor when smoke ventilation and prevention system is used. The fresh air dilutes the smoke, but it also reduces the efficiency of mechanical exhaust. The assumption that vertical composition smoke control model (air curtain combined with pressurization and exhaust fan) is put forward. The mathematic model...

RATIONALE Lung injury after cigarette smoking is related to particle retention. Iron accumulates with the deposition of these particles. OBJECTIVES We tested the postulate that (1) injury after smoking correlates with exposure to the particulate fraction of cigarette smoke, (2) these particles alter iron homeostasis, triggering metal accumulation, and (3) this alteration in iron homeostasis a...

Cigarette smoke exposure causes chronic oxidative lung damage. During pregnancy, fetal microchimeric cells traffic to the mother. Their numbers are increased at the site of acute injury. We hypothesized that milder chronic diffuse smoke injury would attract fetal cells to maternal lungs. We used a green-fluorescent-protein (GFP) mouse model to study the effects of cigarette smoke exposure on fe...