Natural substances extracted from plants have recently been considered as potential sunscreen resources because of their ultraviolet ray absorption in the UVA region and their antioxidant activity. In the present study, the UV protective effects of ethyl acetate extracts of some common medicinal plants, which have flavonoids and other phenolics as the most important components, were evaluated u...

The aromatic roots of Viola arvensis and V. rafinesquii were studied in order to determine the chemical nature and anatomical localization of their volatile compounds. Gas chromatography and mass spectroscopy revealed a single detectable volatile compound, methyl salicylate. Light microscopy and differential staining with Sudan III indicates the source of this compound to be enlarged secretory ...

The phylogenies of allopolyploids take the shape of networks and cannot be adequately represented as bifurcating trees. Especially for high polyploids (i.e., organisms with more than six sets of nuclear chromosomes), the signatures of gene homoeolog loss, deep coalescence, and polyploidy may become confounded, with the result that gene trees may be congruent with more than one species network. ...

Madencilik faaliyetleri sanayi devriminden bu yana insan yaşamının sürdürülebilirliğinde, ülkelerin refah ve kalkınma düzeylerinin ilerlemesinde bir gösterge olarak kabul edilmektedir. Fakat maden işletme süresince uygulanan bazı fiziksel kimyasal işlemler çevresel sorunları da beraberinde getirmektedirler. Bu sorunlar toprakların verimsizleşmesi, yerel endemik türlerin kaybolması, flora faunan...

Produk tanaman hias dikategorikan menjadi tiga macam, yaitu hamparan, gantung, dan pot. Marigold (Tagetes erecta L.), Pansy (Viola tricolor Viola odorata L.) merupakan jenis hamparan. Tanaman hamparan umumnya semusim yang ditanam di tanah atau menggunakan polybag. paling umum diperuntukkan sebagai lanskap dekorasi. Tujuan penelitian ini adalah mempelajari aspek hortikultura kelayakan ekonomi us...