CHAIRMEN AND MATHEMATICS (A) PHYSICS (B) CHEMISTRY (C) ASTRONOMY (D) Lipman Bers Edwin M. McMillan Thomas E. Taylor Frank D. Drake SECRETARIES OF F. A. Ficken Rolf M. Sinclair Leo Schubert Arlo U. Landolt AAAS SECTIONS PSYCHOLOGY (J) SOCIAL AND ECONOMIC SCIENCES (K) HISTORY AND PHILOSOPHY OF SCIENCE Carl P. Duncan Robert K. Merton Ernest Nagel William D. Garvey Harvey SapoIsky Dudley Shapere IN...

Hypericum perforatum L. (St. John’s wort) is a well-known medicinal plant that possesses secondary metabolites with beneficial pharmacological properties. However, improvement in the production of via genetic manipulation challenging task as H. remains recalcitrant to Agrobacterium tumefaciens-mediated transformation. Here, transcripts key genes involved several defence responses (secondary met...

OBJECTIVE To evaluate the antihyperglycemic activity of ethyl acetate extract of Hypericum perforatum (H. perforatum) in streptozotocin (STZ)-induced diabetic rats. METHODS Acute toxicity and oral glucose tolerance test were performed in normal rats. Male albino rats were rendered diabetic by STZ (40 mg/kg, intraperitoneally). H. perforatum ethyl acetate extract was orally administered to dia...

Hypericum perforatum (St John's wort) is a reservoir of diverse classes of biologically active and high value secondary metabolites, which captured the interest of both researchers and the pharmaceutical industry alike. Several studies and clinical trials have shown that H. perforatum extracts possess an astounding array of pharmacological properties. These properties include antidepressant, an...

Hypericum perforatum L. is a medicinal plant considered as an important natural source of secondary metabolites with a wide range of pharmacological attributes. Hairy roots (HR) were induced from root segments of in vitro grown seedlings from H. perforatum after cocultivation with Agrobacterium rhizogenes A4. Investigations have been made to study the production of phenolic compounds in dark-gr...

This paper is concerned with estimating preference functionals for choice under risk from the choice behaviour of individuals. We note that there is heterogeneity in behaviour between individuals and within individuals. By ‘heterogeneity between individuals’ we mean that people are different, in terms of both their preference functionals and their parameters for these functionals. By ‘heterogen...