• Asian Pacific Journal of Cancer Prevention
• /
• 제16권3호
• /
• pp.1159-1164
• /
• 2015

Background: The prevalence of smoking among secondary school children continues to remain unchanged over the last 3 decades even though awareness regarding the health effects of smoking is increasing. Common misconceptions about smoking and parental influence could be factors influencing future intentions to smoke among these students. Hence, we looked at the common misconceptions as well as student perceptions about their future intention to smoke among Form 4 students in Shah Alam, Malaysia. Materials and Methods: This study was conducted by distribution of a questionnaire developed as part of the Global Youth Tobacco Survey to Form 4 student in 3 schools at Shah Alam. Results: Prevalence of smoking (current smokers) was 7.5%. Almost half of the children came from families where one or both parents smoked and a third of the parents had no discussion regarding consequences of smoking with them. A large number of students were classified as "triers" as they had tried smoking and were unsure of whether they would not be smoking in the future. Contrary to our expectations, students generally felt smoking did make one feel more uncomfortable and helped one to reduce body weight. Most students seemed to be aware of the ill-effects of smoking on health. They felt they had received adequate information from school regarding the effects on smoking on health. Conclusions: Our study showed that even though Form 4 students in Shah Alam were knowledgeable about ill-effects of smoking and were taught so as part of their school curriculum, the prevalence of smoking was still high. Students in the "trier group" represent a potential group of future smokers and strategies targeting tobacco control may be aimed at tackling these vulnerable individuals. Efforts are also needed to help educate secondary school children about common misconceptions and dispel myths associated with cigarette smoking.

• 한국산림과학회지
• /
• 제95권6호
• /
• pp.636-642
• /
• 2006

야외에서 새로운 송이균환을 만들기 위하여 2000년부터 2005년까지 소나무를 이용한 송이 감염묘 생산과 이식 및 이식 후 송이 균의 활착을 높일 수 있는 방법을 연구하였다. 송이 간염묘 생산을 위해서는 11월에 균환 선단에 심을 경우 활착률 97%를 나타낸 반면 4월에 심을 경우에는 활착률이 80%를 나타냈다. 송이균의 감염은 식재 후 2년 이상 경과하여야 완전히 이루어지는 것으로 나타났으며, 천연치수를 이용한 경우는 17.6%의 송이균 생존률을 나타낸 반면, 양묘를 이용한 경우는 송이균의 생존율이 극히 낮았다. 한편, 생산된 감염묘의 이식 시 송이균의 생존율은 4월에 이식할 경우 22%, 10월과 11월에 이식할 경우에는 5%를 나타냈다. 이식한 송이 감염묘에서 송이균의 생존은 이식전 50% 내외의 송이균 감염율을 가진 감염묘가 가장 높은 생존율을 니타냈다. 이식한 송이 감염묘에서 송이균의 생존 여부 확인을 위하여 송이 감염묘를 완전히 파내어 확인하는 방법은 살아있던 송이균도 이후에 사멸하게 되는 원인이 되었다. 이에 따라 이식한 감염묘의 송이균 확인은 색대를 이용하는 방법을 도입하였으며, 이식 후 2년 이상 경과한 후에 검정하는 것이 송이균의 생존에 유리할 것으로 판단되었다.

• 한국연초학회지
• /
• 제6권2호
• /
• pp.97-116
• /
• 1984

Volatile aroma components were extracted from Korean burley tobacco (grades: heavy-1, heavy-5, thin-1, and thin-5) by using a vacuum steam distillation apparatus. Individual flavor components were identified by combination of Carbowax20M (used silica capillary gas chromatography and mass spectrometry. Out of the identified components, neophytadiene (43.6ppm), megastigna-4,6,8-trien-3-one (4isomers) (3.32-23.5 1ppm), ethanol (1.8ppm), and ethylacetate (4.7ppm) were contained less in burley heavy grade-5 tobacco than in heavy grade 1 ; neophytadiene (43.7pp), megastigma-4,6,8-triers-3-one (4 isomers) (1.09-3.03ppm), ethylacetate (7.9ppm), and ethanol (8.4ppm), were less in burley thin grade 5 tobacco than in thin grade 1 : nicotin (75.79ppm), and solanone (8.5ppm) were less in burley heavy grade 1 tobacco than in burley heavy grade 5: solanone (5.76ppm), geranylacetone (9.02ppm), phenylacetaldehyde (1.12ppm), $\beta$-phenylethylalcohol (1.93ppm), and dihydroactinidiolide (1.39ppm) were less in burley thin grade 1 than in burley thin grade 5. On the other hand, iso-valeraldehyde, n-valeraldehyde, dimethylpyrazine, and propionic acid were not identified in Korean burley tobacco, but in American burley tobacco.