MOLECULAR EVIDENCE FOR AN OLD WORLD ORIGIN OF GALAPAGOS AND CARIBBEAN BAND-WINGED GRASSHOPPERS (ACRIDIDAE: OEDIPODINAE: SPHINGONOTUS).

Molecular evidence for an old world origin of Galapagos and Caribbean band-winged grasshoppers (Acrididae: Oedipodinae: Sphingonotus).

Patterns of colonization and diversification on islands provide valuable insights Hall or Caged Light into evolutionary processes.Due to their unique geographic position and well known history, the Galapagos Islands are an important model system for evolutionary studies.Here we investigate the evolutionary history of a winged grasshopper genus to i

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Gene silencing by RNAi in mouse Sertoli cells

Abstract Background RNA interference (RNAi) is a valuable tool in the investigation of gene function.The purpose of this study was to examine the availability, target cell types and efficiency of RNAi in the mouse seminiferous epithelium.Methods The experimental model was based on transgenic mice expressing EGFP (enhanced green fluorescent protein)

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Analysis of Scattering Characteristics Based on Crank-Nicolson Direct-Splitting Algorithm for Remote Sensing Problems

In remote sensing problems, broadband scattering investigation becomes increasingly important than ever before.The scattering characteristic changes significantly with the variation of range.Thus, the conventional evaluation method becomes invalid in many situations.Meanwhile, an Echinacea efficient method for the simulation of electromagnetic wave

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El periplo norteafricano de Ofelas

The atlantic periplus of Ophelas could be have realized to instance of Alexander, ca.331-323 BC, to evaluate the carthaginian presence in the North Graters African Atlantic facade, before his projected campaign against Carthage and later try to reach the Columns of Herakles by the African coast.A second possibility could be during the period of Oph

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