there are specific forms of mural paintings in some iranian churches that are different from other usual wall paintings in materials, methods as well as implementation techniques. unfortunately, these mural paintings are not studied until now. the aim of this paper is the identification of history of development, and used materials and techniques in these historic paintings by field and literat...

Cut gerbera (Gerbera jamesonii) flowers are sensitive to microbial contamination and have short vase life. The effect of salicylic acid, citric acid and ascorbic acid (50, 100 and 200 mg l-1) was evaluated on vase life of gerbera flowers. Changes in vase life, water absorption, and bacterial population in stem and vase solution, also biochemical characteristics such as protein concentration, li...

A review of the authors’ research works on Variable-Angle Spectroscopy (VASE) graphene-based films is presented. The interaction graphene oxide (GO) with magnetron-sputtered metals a promising area. VASE optical models GO thin deposited titanium (Ti), silver (Ag) and gold (Au) are discussed. Moreover, properties nanoplatelet (GNPS) reduced (RGO) stabilized Poly(Sodium 4-Styrenesulfonate) (PSS) ...

lisianthus (eustoma grandiflorum cv. ‘mriachii blue’) is one of the most important and marketable cut flowers in the world. however, a relatively limited vase life reduces its marketability. the aim of the present study was to evaluate the effects of essential oils in extending vase life of cut flowers of lisianthus. for this purpose a factorial experiment based on a completely randomized desig...

Automatic methods of calculating canvas thread counts from x-rays of paintings reveal a systematic pattern for warp and weft thread densities that persists along the respective thread directions. These patterns can be used to find paintings that have matching weave patterns, with warp-thread pattern matches more prevalent than weft-thread matches when trying to associate paintings to the same c...

Mathematics and painting are interrelated in many ways. At a technical level mathematics can be used to enhance our appreciation of paintings. This was recently demonstrated beautifully by Taylor, Micolich, and Jones in their analysis of Jackson Pollock’s drip paintings, which led them to the conclusion that Pollock’s paintings are in a way Ž gurative pictures. Relations also exist at a more ba...

The visual arts have for hundreds of years presented viewers with images that have been more or less representational of the external world. In fact, many of these images have been such convincing representations of the world that they can fool the viewer into thinking that the representation is in fact reality or a photograph, and not paint on a canvas. Examples of such trompe I’oeil (fool the...

BACKGROUND The present research concerns the Roman wall paintings preserved at Insula del Centenario (IX, 8), the important Pompeian block situated in the Regio IX, along Via di Nola. RESULTS The aims of this research are two: to verify the presence of lipidic and proteinaceous material to spread the pigments, and to identify organic matter in painting materials owing to previous restoration ...

Inductive learning -- that is, learning a new concept or category by observing exemplars -- happens constantly, for example, when a baby learns a new word or a doctor classifies x-rays. What influence does the spacing of exemplars have on induction? Compared with massing, spacing enhances long-term recall, but we expected spacing to hamper induction by making the commonalities that define a con...