A study of non-diatom algal species composition in twelve sites from Greater Zab River path within Erbil Province, was carried out April 2021 to January 2022 with monthly sample collection studied sites. Among them site 4,5,6,7 and 9 are the first for this area. The 112 different algae belong 33 genera, 25 families, 13 orders 4 divisions have been identified. predominant genera included Spirogy...

Designing efficient and cost-effective bifunctional catalysts is desirable for carbon dioxide oxygen reduction reactions (CO2RR ORR) to address neutralization energy conversion. Herein, a CO2RR ORR catalyst aqueous Zn-air battery (ZAB) self-driving electrolysis developed using atomically dispersed niobium anchored onto N-doped ordered mesoporous (Nb-N-C). The Nb-N-C atomic demonstrates activity...

Fish otolith and water chemistry were assessed in the Grand Canyon reach of the Colorado River and its tributaries. Aqueous strontium and selenium (in ratio to calcium) and carbon stable isotopic ratios were identified as markers with excellent potential to track the provenance and movements of the endangered humpback chub Gila cypha. Although otolith dC and Sr/Ca varied proportionately to wate...

abstract a mountain glacier, when it occupies a river valley, immediately begins to change the cross-section and profile of that valley. river valleys in mountain areas tends to have v-shaped profiles. glaciers work to widen as well as deepen their valleys and the typical cross-section of a glacial valley is u-shaped. the u-shaped glacial valley is one of the most characteristic of glacial land...