SSSAJ
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Abstract Freely available
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (2)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Biesheuvel, P.M.
Right arrow Articles by Verweij, H.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Biesheuvel, P.M.
Right arrow Articles by Verweij, H.
GeoRef
Right arrow GeoRef Citation
Agricola
Right arrow Articles by Biesheuvel, P.M.
Right arrow Articles by Verweij, H.

Response of the Osmotic Tensiometer to Varying Temperatures

Modeling and Experimental Validation

P.Maarten Biesheuvela, Ron Raangsb and Henk Verweija

a Lab. for Inorganic Materials Sci., Dep. of Chem. Technol. and MESA Res. Inst., Univ. of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
b Dep. of Environ. Sci., Subdep. Water Resour., Wageningen Univ., Nieuwe Kanaal 11, 6709 PA Wageningen, The Netherlands



View larger version (15K):

[in a new window]
  		Fig. 1 Construction of osmotic tensiometer: 1, ceramic filter; 2, injection point; 3, brass housing; 4, cell filled with polymer–water solution; 5 pressure transducer; 6, data transfer

 


View larger version (13K):

[in a new window]
  		Fig. 2 Dimensions of typical tensiometer cup

 


View larger version (12K):

[in a new window]
  		Fig. 3 Pressure transducer (a) without pressure difference and (b) flexed due to pressure difference

 


View larger version (20K):

[in a new window]
  		Fig. 4 Experiment (dots) vs. model (solid line) for an osmotic tensiometer submersed in free water for 3 d. Model and measurements start at T = 24°C and P = 1.24 MPa and they make three loops in clockwise direction. The dashed line gives the absolute value of the osmotic potential

 


View larger version (24K):

[in a new window]
  		Fig. 5 Parity plot showing the agreement between the model and the experiments of Fig. 4

 


View larger version (21K):

[in a new window]
  		Fig. 6 Influence of the group SK on the pressure response curves for the osmotic tensiometer. The absolute value of the osmotic potential |{psi}o| is a straight line starting at T = 12°C and P = 1.4 MPa with a gradient of -ß = 3.75 x 104 Pa K-1

 




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1999 by the Soil Science Society of America.