Trees under tension
Article Abstract:
There is no adequate theory to explain the phenomenon of water moving to the top of trees having xylem vessels with diameters of 100 micrometers. The capillary theory is insufficient because diameters of xylem vessels of these trees are too wide to lift water. The osmotic mechanisms theory is also inadequate. A more relevant method can be found in the cohesion theory of water transport. According to this theory, the tension of xylem conduits cause water to move upward. The tension is due to the evaporation of water from the leaf cell walls.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Scale invariance and universality of force networks in static granular matter
Article Abstract:
An unexpected connection between static granular matter and equilibrium critical phenomena is established. The observed scale invariance is in all aspects comparable to equilibrium criticality and defines a universality class of isotropic force networks.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Stress transmission through a model system of cohesionless elastic grains
Article Abstract:
The results are presented of research into stress transmission in a model system of cohesionless elastic grains.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Honey bees recognize development of nestmates' ovaries. Genetic variance in honey bees for preferred foraging distance
- Abstracts: Population viability of Rorippa columbiae: multiple models and spatial trend data. Population size and reproduction in Phlox pilosa
- Abstracts: Modern freshwater microbialite analogues for ancient dendritic reef structures
- Abstracts: Cloning and characterization of the thyroid iodide transporter. Taking up iodide in breast tissue
- Abstracts: Genie in a bottle. C60 - the hole story. Room-temperature electronic phase transitions in the continuous phase diagrams of perovskite manganites