نتایج جستجو برای: mixed stream

تعداد نتایج: 277351  

Journal: Desert 2007
A. Esmaeili Nameghi A. Hassanli, M. Soufi

Abstract Spacing between check dams depends on the stream bed slope, effective height of check dams and slope of deposited sediments behind the check dams. The slope of deposited sediments is more important than the other two factors because of complications in the way of its occurrence and its measurement after several years of dam construction. This research presents the effective factors a...

ژورنال: علوم آب و خاک 2011
حسین صدقی, , محمود شفاعی بجستان, , مهدی کرمی مقدم, ,

In diversion flows, a portion of stream flow which enters the intake is diverted from upstream of the intake denoted by a surface and is called dividing stream surface (DSS). The amount of flow and sediment discharge entering the intake as well as design of submerged vanes to control sediment depends on determination of dividing stream width. In this study, the experimental tests were carried o...

Farzaneh Azimi Reza Talaei Seyed Ahmad Hosseini

An erosion hazard index methodology (EHIM) was developed for assessing stream erosion. The index of stream erosion is designed as a management tool. Assessing stream erosion involves consideration of a range of aspects of streams and a value judgment about a desirable state. The assessment of the erosion indicators of streams was based on a state-wide assessment of physical stream condition. A ...

Journal: :Journal of Physical Oceanography 2020

Mansour Shirvani, Mohammad Reza Zahiri Sepideh Akhbarifar Sorood Zahedi Yousef Shamsaii

In this paper a new process is presented for improving efficiency of cyclone de-dusting systems. The cyclone is coupled with a specially designed cylindrical chamber which includes a rotating tube inside it with air impinging nuzzles, drilled on the peripheral surface of the tube. The nuzzles help in pushing and throwing the particles to the outer radius distances during downward flow of du...

Journal: :ACM Transactions on Parallel Computing 2018

Journal: :Journal of Hydrology 2021

Broadleaf or conifer forest? – an ongoing dilemma as regards water resource and flood prevention. Although trees use less are hydrophobic, existing studies at the watershed scale have shown varying results due to variability in meteorological conditions forestry practices. In this study, two adjacent headwater catchments [2.42 ha cypress (CF); 2.08 mixed-broadleaf (MB)] were gauged. The study a...

Journal: :Ecohydrology 2023

The exports of carbon and nitrogen with water flowing in the headwater streams could be important components material mitigation forest ecosystems. Plant debris is a major source dissolved organic matter for streams, but few studies have investigated differences between impacts woody non-woody inputs on terms exports. Here, we assessed effects plant (i.e., debris, mixed debris) concentrations (...

2013
Sara J. Elliott Peter Wilf Robert C. Walter Dorothy J. Merritts

Widespread deforestation, agriculture, and construction of milldams by European settlers greatly influenced valley-bottom stream morphology and riparian vegetation in the northeastern USA. The former broad, tussock-sedge wetlands with small, anastomosing channels were converted into today's incised, meandering streams with unstable banks that support mostly weedy, invasive vegetation. Vast accu...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید