Under- and over-water halves of Gyrinidae beetle eyes harbor different corneal nanocoatings providing adaptation to the water and air environments.

Whirligig beetles (Gyrinidae) inhabit water surfaces and possess unique eyes which are split into the overwater and underwater parts. In this study we analyze the micro- and nanostructure of the split eyes of two Gyrinidae beetles genera, Gyrinus and Orectochilus. We find that corneae of the overwater ommatidia are covered with maze-like nanostructures, while the corneal surface of the underwater eyes is smooth. We further show that the overwater nanostructures possess no anti-wetting, but the anti-reflective properties with the spectral preference in the range of 450-600 nm. These findings illustrate the adaptation of the corneal nanocoating of the two halves of an insect's eye to two different environments. The novel natural anti-reflective nanocoating we describe may find future technological applications.

Air Quality,

The Iowa Department of Economic Development (IDED) is committed to assisting economic developers as they advise businesses with new projects and expansions. IDED and the Iowa Department of Natural Resources (IDNR) have developed this fact sheet as a guide to help a business or project meet state and federal air quality regulations.

Proserpine. Menuet des ombres heureuses ; Atys. Air pour la suite de Flore : gavotte ; Amadis. Menuet / Lully, comp. ; orch. ; Maurice Cauchie, dir.

Titre uniforme : [Proserpine. LWV 58]. Extrait

AWOS in Iowa, May 21, 2009

Automated Weather Observing Systems (AWOS) collect and disseminate weather data to various sources for the primary purpose of enhancing the safety of aircraft operations in Iowa’s air transportation system. A network of 41 AWOS systems is maintained by the Iowa Department of Transportation (Iowa DOT), and strategically located at airports around Iowa to provide both geographic and airport-specific coverage. AWOS enhances aviation safety by providing critical airport weather information to pilots to be used for flight planning and in-flight decision making. The system provides real-time weather observations, including wind, visibility, current weather, sky conditions, temperature, dew point, altimeter setting, and remarks, such as density altitude and local airport conditions.