Marine shell, turquoise, exotic ceramics, and toolstone, and raw minerals are common in archaeological assemblages generated by the Fremont, small scale farmers and foragers who occupied the eastern Great Basin and Colorado Plateau of western North American between AD 400 and 1300. Although researchers routinely describe such artifacts, little attention been paid to the means whereby these item...

Azul turquesa 15 (AT15) é um corante reativo amplamente utilizado na indústria têxtil para colorir fibras naturais. A presença destes corantes no efluente e rejeito industrial é de considerável interesse devido a problemas ecotoxicológicos e ambientais. A redução eletroquímica deste corante foi investigada em solução aquosa usando voltametria cíclica, eletrólise em potencial controlado e voltam...

Both sexes of the turquoise-browed motmot (Eumomota superciliosa) perform a wag-display in the presence of predators, whereby their long racketed tail is repeatedly rocked side-to-side in a pendulous fashion. I tested 3 hypotheses for the function of the predator-elicited wag-display: 1) pursuit-deterrent signal, 2) warning alarm signal, and 3) self-preservation alarm signal. These hypotheses w...

Growing concern about the supply of goods under COVID pandemic due to border restrictions and community lockdown has made us aware limitations global chain. Fertilizers are...