with regard to the importance of instantaneous peak discharge estimation for watershed management study, and due to the lack of and unqualified climatic and hydrologic data for estimation and measurement in countries such as iran, researchers were obliged to establish a link between constant parameters (geomorphologic) and variables (hydrologic) to present models with minimum dependence on clim...

Delineation of drainage basins is a popular terrain analysis method for digital elevation model (DEM) data. Currently, a deterministic delineation method is available in a number of terrain analysis software applications. The method uses elevation data for defining flow directions for each elevation point of a DEM and then follows flow paths from a pour point to all upstream points. The influen...

Converting rangelands to arable land such as dry farming is widely practiced in many places in Iran. This activity could possibly contribute to the increase in downstream sedimentation. The effects of this activity on downstream watersheds are not well documented for many strategic areas in the country. One such area which is proposed for this study is the Kardeh drainage basin, located in the ...

An application of regression relationships depending on geomorphic parameters is proposed to predict the amount of the average annual suspended sediment yield at different sections of the drainage network. Simple and multiple regression relationships, utilising the drainage density and the hierarchical anomaly index as independent variables, based on data from 20 river basins of different size ...

background: melanoma progression and metastasis is suggested to be mediated by increased accumulation of myeloid derived suppressor cells. various chemotherapeutic drugs such as 5-fluorouracil in single low concentration have the capacity, at least in part, to reverse tumor progression by reducing myeloid derived suppressor cellsmediated immunosuppression. objective: to assess whether multiple ...

BACKGROUND Any sentinel lymph node that receives lymph drainage directly from a primary melanoma site, regardless of its location, may contain metastatic disease. This is true even if the sentinel node does not lie in a recognized node field. Interval (in-transit) nodes that lie along the course of a lymphatic vessel between a primary melanoma site and a recognized node field are sometimes seen...

zosteriform metastasis is a rare clinical distribution from spreading neoplasms of every organ to the skin. tumors most often arise from a n internal o r hematologic malignancy. w e report a 69-year-old man, a known case of malignant melanoma of the left heel. in this case, multiple red-brown metastatic nodules appeared four months after diagnosis. distribution of metastatic lesions resembled a...

The topography of the eastern Southern Alps (ESA) reflects indenter tectonics causing crustal shortening, surface uplift, and erosional response. Fluvial drainages were perturbed by Pleistocene glaciations that locally excavated alpine valleys. The Late Miocene desiccation of the Mediterranean Sea and the uplift of the northern Molasse Basin led to significant base level changes in the far fiel...

The relative importance of agricultural land retirement on water quality and aquatic-community health was investigated in the Minnesota River Basin. Eighty-two sites, with drainage areas ranging from 4.3 to 2200 km, were examined for nutrient concentrations, measures of aquatic-community health (e.g., fish index of biotic integrity [IBI] scores), and environmental factors (e.g., drainage area a...