LESTRIMELITTA CHACOANA ROIG-ALSINA, 2010 (MELIPONINI, APIDAE) IN A SEMIDECIDUOUS ATLANTIC FOREST, SOUTHERN BRAZIL

Lestrimelitta chacoana Roig-Alsina, 2010 (Meliponini, Apidae) in a Semideciduous Atlantic Forest, Southern Brazil

The species of the cleptobiotic bee genus Lestrimelitta Friese, 1903 (Hymenoptera: Apidae) are generally known mel axolotl as a menace to Meliponiculture and Apiculture, that is why it is common to observe recommendations to beekeepers to avoid the proximity of their meliponaries with any Lestrimelitta hives.So, besides other anthropic pressures, t

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AMS-02 antiprotons from annihilating or decaying dark matter

Recently the AMS-02 experiment reported radio birdman tshirt an excess of cosmic ray antiprotons over the expected astrophysical background.We interpret the excess as a signal from annihilating or decaying dark matter and find that the observed spectrum is well fitted by adding contributions from the annihilation or decay of dark matter with mass o

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Maximizing the Light Extraction Efficiency for AlGaN-Based DUV-LEDs with Two Optimally Designed Surface Structures under the Guidance of PSO

A novel method of utilizing an intelligent algorithm to guide the light extraction surface structure designing process for deep-ultraviolet light emitting diodes (DUV-LEDs) is proposed and investigated.Two kinds of surface structures based on the truncated pyramid array (TPA) and truncated cone array (TCA) are applied, which are expected to suppres

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