The analysis of the contents of 690 children’s drawings of the den­ t is t ’s o ffice was carried out w ith the aim of determ ining the presence of »fear-inducing« and »encouraging« elements in these drawings. The results showed that only 9% of children drew encouraging elements like flowers, pictures, decorations, etc. The presence of fear-inducing elements appea­ red to depend on: 1) children...

BACKGROUND AND AIMS Environmental variability at several scales can determine plant reproductive success. The main goal of this work was to model the reproductive flexibility of a semi-arid specialist considering different scales of environmental variability. METHODS A 2-year field study was performed on the determinants of the female reproductive success of Helianthemum squamatum, an Iberian...

Suppose a speaker gestures toward four flowers and asks a listener, "How would you describe the color of this f lower?" How does the listener infer which of the four flowers is being referred to? It is proposed that he selects the one he judges to be most salient with respect to the speaker 's and his common ground-the i r mutual knowledge, beliefs, and suppositions. In a field experiment, it w...

A facile synthesis of monodispersed microparticles composed of superparamagnetic Fe(3)O(4) cores, SiO(2) shell, hierarchical γ-AlOOH periphery with Au nanoparticles is reported. These particles are found to be useful for protein immobilization and bear resemblance to daisy flowers, and are hereafter termed "nanoflowers".

The antioxidant capability, total phenol, total flavonoid, anthocyanins, ascorbic acid contents, and reducing power contents of polar and non-polar extracts for flower and leaves in two stages of growth for Rhamnus kurdica Boiss in flowering were evaluated in this work. The polar extraction of flower of R. kurdica Boiss had a higher total phenolic content as well as antioxidant activity compare...

The present study was designed to evaluate relative contribution of different polyphenols (total phenolics, flavonoids, flavonols) and their antioxidants activities in aqueous extracts of different parts of some plants; Argemone mexicana, Datura metel, Calotropis procera, Thevetia peruviana, and Cannabis sativa. The antioxidants (total phenolics, flavonoids, flavones) were determined by chemica...

Major chemical compounds in different extracts from tea flowers (Camellia sinensis) were analyzed. Distilled water or 70% ethanol extracts were then fractionated with chloroform, ethyl acetate and n-butanol, respectively. Each extract fraction was tested its scavenging activities on 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl free radicals. The results showed that ethyl acetate fraction o...