Smoke from burning different kinds of vegetation or wood is often used as a cheap personal protection measure against mosquitos during the evening. To test the efficacy of smoke, a comparative field trial was conducted in the Wosera District, Papua New Guinea. Repellency of smoke from burning wild mango wood (Mangifera spp), leaves from betelnut (Areca catechu), wild ginger (Alpinia spp) and co...

Germplasm conservation in the form of seed is convenient and most cost-effective ex situ conservation method for plant species producing orthodox seeds. Several species of plantation crops and spices produce non-orthodox seeds, which exhibit intermediate or recalcitrant seed storage behaviour. Storage of these species requires the use of in vitro conservation techniques for shortto medium-term ...

2002 Winstock A. Areca nut-abuse liability, dependence and public health. Addict Biol 2002; 7:133± 8. Williams S, Malik A, Chowdhury S, Chauhan S. Socio-cultural aspects of areca nut use. Addict Biol 2002;7:147± 54. Warnakulasuriya S. Areca nut use following migration and its consequences. Addict Biol 2002;7:127± 32. Trivedy CR, Craig G, Warnakulasuriya S. The oral health consequences of chewin...

AIM The objective of our study was to assess betel nut usage as one of the major risk factors associated with coronary artery disease. METHODS This case control study consisted of 300 controls and 300 cases. A structured questionnaire was administered to the participants to assess consumption of betel nut and confounding variables. A respondent was considered a regular consumer of betel nut i...

BACKGROUND This study aimed to examine: 1) the relationship between being a runaway and the time since the first absconding event and adolescent substance use; 2) whether different kinds of psychoactive substances have a different temporal relationship to the first absconding event; and 3) whether the various reasons for the first absconding event are associated with different risks of substanc...

This is a survey of 120 children for scabies and head lice infestations in a welfare home in Pulau Pinang. Children from this welfare home (Rumah Kanak-Kanak Taman Bakti, Kepala Batas, Pulau Pinang) were randomly selected. Majority of them were Malays (72.5%) and the rest were Indians. The infestation rates were highest in the 10-12 years age group with 46% and 70% for scabies and head lice res...

Oral cancer is a fatal disease, accounting for the fourth highest incidence of malignancy in males and the seventh in females in Taiwan. The relatively high prevalence of oral cancer in Taiwan is mainly because there is a high-risk group of 2.5 million people with the habit of smoking and betel nut chewing. Unfortunately, 50% of new cases in our medical center who present with TNM stage III or ...