wastewater treatment technology in the cyclic nature of the process that takes a long time. but man tries to rush to their needs with experience and understanding of the natural processes of interaction, and using technology to build their industrial development is authorized. sewage treatment reed have been born from the vision of man's increasing need to water daily decreases the natural reso...

visitor management is considered important for the sustainable development of protected areas as the presence of visitors may cause negative impacts on wildlife and vegetation. within this framework, visitor impacts and perceptions are considered critical for decision-making and planning of future management regimes. this paper resumes opinions of visitors of the valley of butterflies in rhode...

Motivated by observations of three-dimensional 3D island formation in a variety of experiments, we have carried out kinetic Monte Carlo simulations of a simplified model of 3D island growth with critical island size i=1 irreversible growth . Of particular interest are the exponents y1 and y1 describing the dependence of the submonolayer island density in the precoalescence regime on dose and co...

Zilong Xie, W. Todd Maddox, John E. McGeary, and Bharath Chandrasekaran Department of Communication Sciences & Disorders, The University of Texas at Austin, Austin, Texas; Department of Psychology, The University of Texas at Austin, Austin, Texas; Division of Behavioral Genetics, Rhode Island Hospital, Providence, Rhode Island; Brown University, Providence, Rhode Island; and Psychologist, Provi...

We adapt the level set method to simulate the growth of thin lms described by the motion of island boundaries. This island dynamics model involves a continuum in the lateral directions, but retains 1 atomic scale discreteness in the growth direction. Several choices for the island boundary velocity are discussed, and computations of the island dynamics model using the level set method are prese...

The radial structure of the shear Alfvén wave continuous spectrum is calculated inside the separatrix of a magnetic island. We find that, within a magnetic island, there is a continuous spectrum very similar to that of tokamak plasmas, where a generalized safety factor q can be defined and a wide frequency gap is formed, analogous to the ellipticity induced Alfvén eigenmode gap in tokamaks. Thi...

The Beringia region of the Arctic contains 2 colonies of lesser snow geese (Chen caerulescens caerulescens) breeding on Wrangel Island, Russia, and Banks Island, Canada, and wintering in North America. The Wrangel Island population is composed of 2 subpopulations from a sympatric breeding colony but separate wintering areas, whereas the Banks Island population shares a sympatric wintering area ...

Mismatch of territories under authority of local governments with urban-regional activity domains, on one hand, has caused numerous problems and, on the other hand, has hindered taking maximum advantage of regional capacities and partial and competitive advantages. Hence, application of a new regionalism approach, which focuses on shared planning and management by all stakeholder groups within ...

Rocky shores are one of the most important habitats of marine environment in coastal areas. They host marine organisms including seaweeds because of existence of strong and stable substrate for their growths. Intertidal rocky shores are a prominent feature on coastal areas of Qeshm Island located at the northern part of Strait of Hormuz. In order to study biomass of seaweeds on rocky intertidal...