Input of organic matter into stream channels is the primary energy source for headwater ecosystems and ultimately carbon to oceans hence an important component global cycle. Here, we quantify organic-rich fine sediment mobilization, transport, storage in a Strahler fourth-order during individual intermediate-sized storm events. By combining measurements fallout radionuclides (FRNs) 7Be 210Pb st...

In meandering rivers, interactions between flow, sediment transport, and bed topography affect diverse processes, including bedform development channel migration. Predicting how these the spatial patterns magnitudes of deformation in rivers is essential for various river engineering geoscience problems. Computational fluid dynamics simulations can predict morphodynamics at fine temporal scales ...

Net sediment transport is predominantly seaward in fluvial-dominated estuaries worldwide. However, a distributary branch the Changjiang Estuary, North Branch, undergoes net landward transport, which leads to severe channel aggradation. Its controlling mechanism and role of human activities remain insufficiently understood, although such knowledge necessary for better management restoration oppo...

Aim of the study: River channels are dynamic structures in which fluvial processes leading to equilibrium state between energy flowing water and stability bed material. The changes river morphology is difficult capture using monitoring tools, however, physical or numerical modeling can be used instead reflect these natural processes. Objective study analyze variability hydraulic parameters thei...

The possible alleviating effects of salicylic acid on protection of cowpea (Vigna unguiculata) cv. Parastu under water stress conditions were investigated in the University of Zanjan Agriculture Research Station during 2008. Water stress was imposed by withholding irrigation at 50% flowering (flowering water stress, FWS) and when 50% of the pods grew 2-3cm (pod-formation water stress, PFWS). Sa...

Wood flux (piece number per time interval) is a key parameter for understanding wood budgeting, determining the controlling factors, and managing flood risk in river basin. Quantitative data critically needed to improve of dynamics estimate discharge rivers. In this study, streamside videography technique was applied detect passage measure instantaneous rates transport. The goal better understa...

despite many advances in the treatment of breast cancer, it is still the second most common cause of death in women in the united states. it has been shown that inflammation plays a major role in the treatment of these cancers and inflammatory factors enhance tumor growth, invasion, metastasis, and vascularization. in this study, we would like to analyze peripheral blood neutrophil-lymphocyte r...

background: hepatitis activity index (hai) and fibrosing stage are two important findings during the evaluation of liver samples in patients with chronic hepatitis b. the aim of this study was to determine the hai and fibrosing stage in patients with anti-hbe positive chronic hepatitis b. methods: liver biopsy slides of 72 patients were evaluated at the department of pathology in two teaching h...