نتایج جستجو برای: anisoptera
تعداد نتایج: 238 فیلتر نتایج به سال:
In the south of Bahia state, a large part native Atlantic Forest areas has been modified for cultivation cocoa (Theobroma cacao). These crops are cultivated under shade canopy trees, system locally known as “cabruca” agroforestry system. This study aimed to evaluate relationship Odonata assemblages (adults and larvae) in farming identify relationships these species with local spatial environmen...
Here we show, by qualitative free- and tethered-flight flow visualization, that dragonflies fly by using unsteady aerodynamic mechanisms to generate high-lift, leading-edge vortices. In normal free flight, dragonflies use counterstroking kinematics, with a leading-edge vortex (LEV) on the forewing downstroke, attached flow on the forewing upstroke, and attached flow on the hindwing throughout. ...
Dragonfly cyclovirus (DfCyV), a new species of ssDNA virus discovered using viral metagenomics in dragonflies (family Libellulidae) from the Kingdom of Tonga. Metagenomic sequences of DfCyV were similar to viruses of the recently proposed genus Cyclovirus within the family Circoviridae. Specific PCRs resulted in the recovery of 21 DfCyV genomes from three dragonfly species (Pantala flavescens, ...
Current vegetation maps show evergreen forests of Cambodia as one homogenous forest type. However, ecological field studies in the central plains demonstrated a heterogenous mosaic different types, each with unique species composition and characteristics. Based on six botanical expeditions, we describe four lowland types: 1) riverine dominated by Dipterocarpus costatus (Dipterocarpaceae); 2) ta...
Clinical and Epidemiological studies have shown that a diet rich in fruits and vegetables is associated with a decreased risk of cardiovascular diseases, cancers and other related disorders. These beneficial health effects have been attributed in part to the presence of antioxidants in dietary plants. Therefore screening for antioxidant properties of plant extracts has been one of the interests...
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