Fern and Epiphyte Biology

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• NUMAN GÖZÜBENLİ

BACKGROUND: Speciose clades usually harbor species with a broad spectrum of adaptive strategies and complex distribution patterns, and thus constitute ideal systems to disentangle biotic and abiotic causes underlying species diversification. The delimitation of such study systems to test evolutionary hypotheses is dif…

• NURSEL İKİNCİ

We describe an approach to implement graded index (GRIN) structures using two-dimensional photonic crystals (PCs). The lattice spacing along the transverse direction to propagation is altered and we show, both theoretically and experimentally, that such a spatial perturbation is an effective way to obtain GRIN PC. The…

• İ.EVRİM ÇOLAK

We present the first observations of zero-n[over ] band gaps in photonic crystal superlattices consisting of alternating stacks of negative-index photonic crystals and positive-index dielectric materials in the near-infrared range. Guided by ab initio three-dimensional numerical simulations, the fabricated nanostructu…

• SERDAR KOCAMAN

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• ESRA AKKOL

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• AYŞEGÜL KÖROĞLU
• İPEK SÜNTAR

A graded index photonic crystal (GRIN PC) configuration was placed at the input side of a photonic crystal waveguide (PCW) in order to efficiently couple the light waves into the waveguide. We compared the transmission efficiencies of light in the absence and presence of the GRIN PC structure. We report a significant…

• İ.EVRİM ÇOLAK

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• ALİ BİLGİÇ
• AYSEL ÇİMEN

Abstract A common understanding of the control of germination through dormancy is essential for effective communication between seed scientists whether they are ecologists, physiologists or molecular biologists. Vleeshouwerset al.(1995) realized that barriers between disciplines limited progress and through insightful…

• STEVEN FOOTITT

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• AHMED NURİ KURŞUNLU

Hypericin and pseudohypericin content in stems, leaves, and flowers of some Hypericum. species growing in Turkey, namely, H. heterophyllum. Vent, H. hyssopifolium. L., H. linarioides. Bosse, H. monbretii. Spach, H. orientale. L., H. origanifolium. Willd., H. perforatum. L., H. scabrum. L., and H. triquetrifolium. Turr…

• CÜNEYT ÇIRAK

Hypericin and pseudohypericin content in stems, leaves, and flowers of some Hypericum. species growing in Turkey, namely, H. heterophyllum. Vent, H. hyssopifolium. L., H. linarioides. Bosse, H. monbretii. Spach, H. orientale. L., H. origanifolium. Willd., H. perforatum. L., H. scabrum. L., and H. triquetrifolium. Turr…

• CÜNEYT ÇIRAK