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At the age of 3.5 years, wild chimpanzees at Bossou, Guinea, begin to use hammer and anvil stones to crack oil-palm nuts to get the kernels. To clarify the developmental processes, the authors did a field experiment in which stones and oil-palm nuts were provided. Infant chimpanzees' stone-nut manipulation was observed and video recorded. Data were collected from 3 infants younger than 4 years ...

Areca nut consumption has been implicated in the progression of Oral Submucous fibrosis (OSF); an inflammatory precancerous fibrotic condition. Our previous studies have demonstrated the activation of TGF-β signaling in epithelial cells by areca nut components and also propose a role for epithelial expressed TGF-β in the pathogenesis of OSF. Although the importance of epithelial cells in the ma...

BACKGROUND There is some evidence which suggests that areca nut chewing has a relationship with metabolic syndrome. Areca nut chewing is continue to increase and so is the metabolic syndrome which is a major cause of cardiovascular mortality in developing countries. The aim of this study was to determine the relationship of raw areca nut and areca nut chewing with tobacco additives and metaboli...

The demand for alternate fuels used in the operation of I.C engine is met with CNSL (Cashew nut shell liquid) a by-product of cashew industry which is considered as an economically suitable for producing biodiesel. Cashew nut shell liquid is obtained from the hard cashew nut shell, cardinal a natural phenol obtained from the pyrolysis of CNSL at reduced pressure. The viscosity of the cardinal i...

BACKGROUND Areca nut is the fourth main psychoactive substance in the world. In India, tobacco is added to the quid and the commercially manufactured nonperishable forms of betel quid (pan masala or gutkha) are on the rise in the market. OBJECTIVE To find out the prevalence of areca nut among the rural residents of Sriperambudur Taluk. SETTINGS AND DESIGN A community-based survey using pre-...