Wetlands have been recognized as a natural resource throughout human history. Their importance in their natural state is appreciated by such people as the Marsh Arabs around the confluence of the Tigris and Euphrates rivers in southern Iraq, as well as in managed forms (e.g., rice paddies, particularly in Southeast Asia) (Mitsch and Gosselink, 2000). The water purification capability of wetland...

Despite evidence that weathering plays a role in forming intertidal, estuarine, and fluvial rock platforms, many publications uncritically refer to “wave-cut” or “stream-cut” rock platforms. The alternative explanations of chemical weathering and physical water erosion of rock platforms have been debated since 1839. Our new approach to this long-standing problem introduces data from fluvial as ...

Control modes of band gap in meander-shaped permalloy (NiFe) thin films have been investigated by the method micromagnetic modeling. The electrodynamic problem is considered finite element and dispersion characteristics spin waves are obtained when geometrical parameters meander changed. character changes frequency ranges Bragg gaps depending on profile has investigated. results can be used to ...

This paper analyzes geometrical approaches to optimize the fluid cooling circulation of motorized spindles. The spindle cooling’s effectiveness, efficiency and influence on machine’s precision are analyzed through observations stator temperature, pressure drop thermal asymmetry, respectively. observation is based a validated coupled thermal/fluid mechanical simulation model. widely used helix m...

The majority of tidal channels display marked meandering features. Despite their importance in oil-reservoir formation and tidal landscape morphology, questions remain on whether tidal-meander dynamics could be understood in terms of fluvial processes and theory. Key differences suggest otherwise, like the periodic reversal of landscape-forming tidal flows and the widely accepted empirical noti...

karun river with a length of about 890 km is considered as a main river in the country. in this paper, types of karun’s screws regarding to the geometric factors of radius of curvature and chord length were identified by fitting circles with the arcs of the river’s axis. river’s arcs were classified into simple and compound screws. then, by formation of the database consist of topographic...

The introduction of next generation sequencing methods in genome studies has made it possible to shift research from a gene-centric approach to a genome wide view. Although methods and tools to detect single nucleotide polymorphisms are becoming more mature, methods to identify and visualize structural variation (SV) are still in their infancy. Most genome browsers can only compare a given sequ...

The studies conducted on plants grown in Kashan have showed the presence of abundant valuable industrial - medicinal plants. Unforlunately, a lot of these plants are removed as weed or grazed by livestock because of Lack of inhabitants' ignorance of their using and mismanagement. - Perovskia abrotanoides is of Lamiaceae family. The natural habitat of this plant is mostly near waterways, the bed...