Magnetic vortices intermittently flow through preferred channels when they are forced in or out of a superconductor. We study this behavior using a cellular model, and find that the vortex flow can make braided rivers strikingly similar to aerial photographs of braided fluvial rivers, such as the Brahmaputra. By developing an analysis technique suitable for characterizing a selfaffine (multi)fr...

Honors and Awards • Rank 7 among nearly 5000 competitors in the nation wide entrance exam for M.S.c program in Artificial Intelligence (2007). • Rank 5 among nearly 13000 competitors in the nation wide entrance exam for M.S.c program in Computer Architecture (2007). • Rank 140 among nearly 500000 competitors in the nation wide entrance exam for university in mathematics and physics (2002). • Br...

This paper describes a fully automated scheme that has provided calibrated 1–10-day ensemble river discharge forecasts and predictions of severe flooding of the Brahmaputra and Ganges Rivers as they flow into Bangladesh; it has been operational since 2003. The Bangladesh forecasting problem poses unique challenges because of the frequent life-threatening flooding of the country and because of t...

Abstract: It is proved that a general non-differentiable skew convolution semigroup associated with a strongly continuous semigroup of linear operators on a real separable Hilbert space can be extended to a differentiable one on the entrance space of the linear semigroup. A càdlàg strong Markov process on an enlargement of the entrance space is constructed from which we obtain a realization of ...

Small and shallow aquatic ecosystems such as ponds and streams constitute a significant proportion of continental surface waters, especially in temperate zones. In comparison with bigger lakes and rivers, they harbor higher biodiversity but they also exhibit reduced buffering capacity face to environmental shifts, such that climate global change can affect them in a more drastic way. For instan...

Pools are often observed in gravel-bed rivers, together with the presence of vegetation patches. In present study, a conceptual model gradual varied flow both convective deceleration and acceleration sections has been constructed flume to study turbulent structures. Vegetation patches extended canopies were planted pool order increase thickness boundary layer inside inner zone. The effects diff...

Changes in the width of channels or rivers that have three-dimensional pool-riffle can affect key parameters river engineering and flow resistance. Understanding effect changes on structures helps to control erosion sedimentation coarse-bed better design ecological restoration projects. The present study investigates sequential its interaction with bank narrowness turbulent characteristics. For...

Transitions inChinese agriculture resulted in industrial animal production systems, disconnected from crop production.We analyzed side-effects of these transitions on total dissolved nitrogen (TDN) and phosphorus (TDP) inputs to rivers. In 2000, when transitionswere ongoing, 30%–70%of the manurewas directly discharged to rivers (range for sub-basins). Before the transition (1970) this was only ...

The role played by river networks in regional and global carbon cycle is receiving increasing attention. Despite the potential of radiocarbon measurements (14C) to elucidate sources and cycling of different riverine carbon pools, there remain large regions such as the climate-sensitive Tibetan Plateau for which no data are available. Here we provide new 14C data on dissolved organic carbon (DOC...

To protect against the environmental pollution, the present research was undertaken to enumerate the Bacterial Technologies (BTs) on the restoration of polluted urban rivers, that is, Fenghu-Song Yang River (FSR) and Xuxi River (XXR). Experimental research accounted for the physiochemical parameters (pH; temperature; dissolved oxygen (DO); chemical oxygen demand (COD); total phosphorus (TP); to...