In this paper we prove a theorem giving sufficient conditions for the existence of common fixed points of pointwise R-subweakly commuting mappings on nonconvex sets. We apply this theorem to derive some results on the existence of common fixed points from the set of best approximation for this class of maps in the set up of metric spaces. The results proved in the paper generalize and extend so...

OBJECTIVE Grape virus diseases are a serious problem in Iran. Leaves and fruits of grape have been used for different purposes like cooking in Iran. The present investigation was carried out to study on the cytotoxic-activities of extracts of fruits and leaves of Vitis vinifera from both virus-free and virus-infected grape cultivars against breast cancer cell line (MDAMB- 231) and human embryon...

this study aimed to determine the effects of different shading ratio and covers on “sultana seedless” table grape quality and storability. grapevines were covered at the veraison stage with 3 shading nets (0, 35, and 75% shading), which were then replaced with covering materials including polypropylene cross-stitch (pc), life pack (lp) and mogul (mg), just before harvest. harvested grapes in al...

in this research, the effect of different concentrations of chitosan (with low molecular weight) on in vitro proliferation of grape cultivar, ’bidaneh ghermez‘, was evaluated. 30 days after establishment, elongated shoots were cultured on the half strength murashige and skoog medium supplemented with 0.5 mg/l bap, 0.1 mg/l iba and different chitosan concentrations (0, 10, 20, 40 and 80 mg/l). t...

iran is believed to occupy the second place, following turkey, among the apricot producing countries in the world. iran is faced with problems in export of apricot due to little or non-observance of drying principals and inattention to world market requirements. the physical and mechanical properties of agricultural products are the most needed and important parameters for design and developmen...