flood water contains high amount of sediment affecting the fertility of the coarse grain alluvial fans and flood plains through increasing nutrients. in this study, the effects of the flood water spreading on the soil nutrients recovery were investigated during 10 years (2004-2014) at the poldasht flood spreading station of west azarbaijan in iran. flooded three upper strips were selected at th...

JCB • VOLUME 172 • NUMBER 4 • 2006 482 M itochondria are passed from cell to cell, as shown by Jeffrey Spees, Scott Olson, Mandolin Whitney, and Darwin Prockop (Tulane University, New Orleans, LA). Prockop’s group stumbled across this remarkable ability while studying bone marrow stem cells (MSCs), which were particularly social in culture, often touching each other and then backing off. Small ...

Sephacryl S-300 gel filtration of animal sera is used to demonstrate that there are at least 2 components that promote the 'spreading' of cells in culture. A morphometric technique is described to quantitate the spreading process. For a number of cell strains and established cell lines the more quantitatively significant spreading factor is not fibronectin. Rather it is a component with fibrone...

Experimental results are presented for the spreading of buoyant drops and gravity currents along a free surface. The spreading occurs at low Reynolds number, and no interfacial tension exists between the spreading and ambient fluid. Theoretical results suggest that distinct spreading rates occur in three regimes: l!@ ln(R/a)#a/R, a/R!l!R/a , and l@R/a , where l is the ratio of the spreading and...

The paper considers, through modelling, how software faults are spread throughout the entire life-cycle of a large software product and how fault detection and correction processes will affect the spreading mechanism. The study is further enlarged to incorporate models for cost estimation. The models can be described as being of a qualitative rather than a quantitative nature, in that they high...