Aqueous and ethanol extracts of different traditional Malaysian plants (Polygonum minus, Andrographis paniculata, Curcuma xanthorrhiza, Momordica charantia and Strobilanthes crispus) were evaluated for their antioxidant properties, total phenolic content and cytotoxic activity. Antioxidant activity was evaluated by using 1,1-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power...

Bioassay guided fractionation of an ethanol extract of leaves of Canarium patentinervium Miq. (Burseraceae Kunth.) led to the isolation of scopoletin. The structure of this coumarin was elucidated based on spectroscopic methods including nuclear magnetic resonance (NMR-1D and 2D) and mass spectrometry. Scopoletin inhibited the enzymatic activity of 5-lipoxygenase and acetyl cholinesterase with ...

OBJECTIVE To evaluate the molluscicidal activities of three Chinese plants N. indicum Mill, R stenoptera DC, and R. japonicum Houtt, and to clarify the molluscicidal mechanism. METHODS N-butanol extracts and water extracts of the three plants were obtained. The reactions of EST isozyme, glycogen and total protein of snails to the plant extracts were studied. RESULTS EST electrophoresis show...

The de Bruijn–Tengbergen–Kruyswijk (BTK) construction is a simple algorithm that produces an explicit symmetric chain decomposition of a product of chains. We linearize the BTK algorithm and show that it produces an explicit symmetric Jordan basis (SJB). In the special case of a Boolean algebra, the resulting SJB is orthogonal with respect to the standard inner product and, moreover, we can wri...

Visuo-spatial integration is indeed one of the cognitive domains in which humans have clearly undergone evolutionary development (Wynn, 1989, 2010). Our ability to conceive of and organize our actions in space is arguably unmatched among primates. And as Bruner & Lozano explicate, this spatial cognition relies on our ability to generate an " inner virtual space " using neural resources of the I...