Concept

Xylem

Related publications (41)

Salix response to different flow regimes in controlled experiments: first results

Alexandre Buttler, Paolo Perona, Pascal Turberg, Constant Signarbieux, Lorenzo Gorla

Dams and water management for hydropower production, agriculture and other human activities alter the natural flow regime of rivers. The new river hydrograph components depend on the type of impoundment and the policy of regulation but such a different flo ...

2013

EVAPOTRANSPIRATION: A PROCESS DRIVING MASS TRANSPORT AND ENERGY EXCHANGE IN THE SOIL-PLANT-ATMOSPHERE-CLIMATE SYSTEM

Marc Parlange, Gabriel George Katul, Chad Higgins

The role of evapotranspiration (ET) in the global, continental, regional, and local water cycles is reviewed. Elevated atmospheric CO2, air temperature, vapor pressure deficit (D), turbulent transport, radiative transfer, and reduced soil moisture all impa ...

2012

Evaluation of the hydrodynamic pressure of cavitation impacts from stress-strain analysis and geometry of individual pits

Ayat Karimi, Davide Carnelli, Jean-Pierre Franc

The present paper focuses on the development of an inverse procedure able to infer the hydrodynamic pressure distribution acting on the material surface and responsible for the creation of the cavitation pit based on the stress in a cavitation pit and its ...

2012

Over-expression of PHO1 in Arabidopsis leaves reveals its role in mediating phosphate efflux

Michaël Bensimon, Charles Vidoudez

P>Inorganic phosphate (Pi) homeostasis in multi-cellular eukaryotes depends not only on Pi influx into cells, but also on Pi efflux. Examples in plants for which Pi efflux is crucial are transfer of Pi into the xylem of roots and release of Pi at the peri- ...

Wiley-Blackwell2011

Hyporheic flow under periodic bed forms influenced by low-density gradients

David Andrew Barry

Small density variations due to low solute concentrations in the stream water commonly exist in streams and rivers. Using laboratory experiments and numerical modeling, we demonstrated that even such small density variations could influence the hyporheic f ...

American Geophysical Union2011

Desiccation shrinkage and its controlling properties: multiphysics

Lyesse Laloui, Hervé Péron

We examine the pore space evolution during saturated stage of soil drying as obtained via porosimetry. This is modeled at a microscale using Poiseuille flow through the capillary vessels of the size of the actual modal pores, with deformable walls driven b ...

CIMNE2009

Biomechanical regulation of blood vessel growth during tissue vascularization

Witold Waldemar Kilarski

Formation of new vessels in granulation tissue during wound healing has been assumed to occur solely through sprouting angiogenesis. In contrast, we show here that neovascularization can be accomplished by nonangiogenic expansion of preexisting vessels. Us ...

2009

Twinned dendrite growth in binary aluminum alloys

Michel Rappaz, Mario Alberto Salgado Ordorica

The formation of twinned dendrites (feathery grains) in binary Al-Zn, Al-Mg, Al-Cu and Al-Ni alloys has been studied in specimens directionally solidified under identical thermal conditions, i.e. G approximate to 100 K cm(-1), v approximate to 1 mm s(-1), ...

Elsevier2008

Cavitation effects on fluid-structure interaction in the case of a 2D hydrofoil

Philippe Ausoni

In the present study, we have carried out an experimental investigation on the fluid-structure interaction caused by Karman vortices in the wake of a truncated 2D hydrofoil. The instrumentation involves a high frequency accelerometer and high speed visuali ...

2005

Introduction to Cavitation in Hydraulic Machinery

François Avellan

Design, operation and refurbishment of hydraulic turbines, pumps or pump-turbine are strongly related to cavitation flow phenomena, which may occur in either the rotating runner-impeller or the stationary parts of the machine. The paper presents the cavita ...

Politehnica University of Timișoara2004

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