نتایج جستجو برای: showing variation of peak discharge
تعداد نتایج: 21198057 فیلتر نتایج به سال:
the behavior of suspended sediment during flood events is not only a function of energy conditions, i.e. sediment is stored at low flow and transported under high flow conditions, but also is related to the variations in sediment supply and sediment depletion. these changes in sediment availability result in so-called hysteresis effects. therefore, hysteresis pattern analysis is of great import...
Flood discharge estimation with different return periods is one of important factors for water structures design and installation. On the other hand, a lot of rivers existing in Iran watersheds have no complete and accurate hydrometric data. In these cases, one of the suitable solutions to estimate peak discharges with different return periods is the regional flood analysis. In this research, 5...
In Nash's cascade model that is simple and efficient model for simulating hydrological response in watersheds, catchment behavior is considered same as n linear reservoirs with k storage coefficient. In this context, the accuracy of different methods of estimating the Nash model parameters (n and k) including moment, experimental Nash formula, Han’s graphical, time to peak-time to inflection po...
Background and Aims: The accurate mechanisms of ankle instability cannot be assessed in the absence of reliable knowledge about ground reaction force (GRF) variables. The purpose of this study was to evaluate the test-retest reliability of GRF variables during forward and lateral jump-landing in volleyball players with functional ankle instability (FAI). Methods: Eighteen professional volle...
this paper is about experimental results for partial reduction of vortex at vertical pipe intakes. one of the easiest and practical ways of reducing vortex effect is to use anti-vortex plates or baffles. these plates can be used to avoid the vortex completely or partially. this paper will concentrate on the latter case. rectangular plates with different dimensions have been placed at different ...
Cimadur river basin is one of the most important catchment areas in Lebak District, Banten Province. For past few years, has experienced floods during rainy season. The big issue flooding been recorded recently December 2019 which caused damage and negative impacts to local people surrounding community. This study aims analyze possibility flood peak discharges area river. are calculated for 2, ...
abstract background: the readiness of mothers to take care for infants at discharge is a critical issue. poor readiness of mothers in taking care of premature infants at the time of discharge is associated with potential adverse consequences. this study examined the effect of implementing mothers’ empowerment program on the weight gain and duration of hospitalization in premature infants. mater...
In this study, some characteristics of a Mather type Plasma Focus (PF) device such as a discharge current, pinch time, ion flux and hard x-ray intensity has been investigated simultaneously in argon and nitrogen gases separately for various operating gas pressures and charging voltages of capacitor bank. It was observed that pinch phenomena was energy and pressure dependent in current sheath as...
OBJECTIVE To assess the association between physical fitness and its recovery over time on the one hand, and complications and duration of phases of rehabilitation on the other. DESIGN AND SETTING Prospective cohort study at eight rehabilitation centres. SUBJECTS People with a spinal cord injury were assessed four times: at the start of active rehabilitation (n = 110), three months later (n...
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