[1] Estimates of mean residence time (MRT) are increasingly used as simple summary descriptors of the hydrological processes involving storage and mixing of water within catchment systems. Current understanding of the physical controls on MRT remains limited, and various hypotheses have been proposed to explain its variability between catchments. We present a series of virtual experiments to in...

Evaluating biochars for their persistence in soil under field conditions is an important step towards their implementation for carbon sequestration. Current evaluations might be biased because the vast majority of studies are short-term laboratory incubations of biochars produced in laboratory-scale pyrolyzers. Here our objective was to investigate the stability of a biochar produced with a med...

Pyrogenic carbon (PyC) is an important component of the global soil carbon (C) pool, but its fate, persistence, and loss dynamics in contrasting soils and environments under planted field conditions are poorly understood. To fill this knowledge gap, a 13C-labelled biochar, as a surrogate material for PyC, produced from Eucalyptus saligna by slow pyrolysis (450°C; δ13C -36.7‰) was surface (0-10 ...

A method for analyz ing the structu re of the white backgr ound in docu ment images is describ ed, along with applic ations to the proble m of isolati ng blocks of machine -printe d text. The appro ach is based on computa tionalgeometry algorith ms for off-li ne enumera tion of maximal white rectan gles and on-line rectan gle unific ation. These suppo rt a fast, simple, and gener al heuri stic ...

0009-2614/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.cplett.2010.08.019 * Fax: +972 2 651 3742. E-mail address: [email protected] The residence time of a diffusing particle in a prescribed spatial region recently finds an increasing number of applications in physics and chemistry. A partial differential equation for the residence time moments is derived, as a generalization of the ...

F. Bresciani and F. Auricchio. Subcellular Distribu tion of Some Metallic Cations in the Early Stages of Liver Carcinogenesis Kenneth Paigen. The Prediction of Growth-inhibitory Drug Combinations Showing Enhanced Differential Toxicity and Collateral Sensitivity Daniel Albert and Irving Zeidman. Relation of Glucocorticoid Activity of Steroids to Number of Mé tastases A. P. Kimball and G. A. LeP...

This paper generalizes known results for nonblocking distribution networks also known as generalized connection networks to the mul tirate environment where di erent user connec tions share a switch s internal data paths in arbi trary fractions of the total capacity In particular we derive conditions under which networks due to Ofman and Thompson Pippenger and Turner lead to multirate distribut...

Context . The lack of sub-Jovian planets on orbits P orb < 3 days is a puzzling aspect galaxy formation with regard to the distribu-tion exoplanets whose origins are currently unresolved. Aims possible explanations behind or Neptunian desert include several scenarios that can lead different shapes for boundary, predicting various dependencies between position boundary and stellar parameters....

a numerical model for simulating residence time distribution (rtd) of turbulent flows in helical static mixers is proposed and developed to improve the understanding of static mixers. the results of this model is presented in terms of different volumetric flow rate to illustrate the complicated flow patterns that drive the mixing process in helical static mixers. the computed results are also u...

We estimate with a branching process model the propa-gation of load shed and the probability distribution of loadshed in simulated blackouts of an electric power system.The average propagation of the simulated load shed datais estimated and then the initial load shed is discretized andpropagated with a Galton-Watson branching process modelof cascading failure to estimate...