Novel functions of the root barrier to radial oxygen loss – radial diffusion resistance to H 2 and water vapour

2021 ◽  
Author(s):  
Lucas León Peralta Ogorek ◽  
Elisa Pellegrini ◽  
Ole Pedersen
Keyword(s):  
Water Vapour ◽  
Radial Diffusion ◽  
Diffusion Resistance ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Root Barrier

Untersuchungen zum Diffusionswiderstand von Holzwerkstoffen | Diffusion resistance of timber materials

2005 ◽  
Vol 156 (3-4) ◽  
pp. 100-103
Author(s):  
Rudolf Popper ◽  
Peter Niemz ◽  
Gerhild Eberle
Keyword(s):  
Relative Humidity ◽  
Water Vapour ◽  
Middle Lamella ◽  
Solid Wood ◽  
Diffusion Resistance ◽  
Water Vapour Diffusion ◽  
Wood Panels ◽  
Vapour Diffusion ◽  
Wet Climate ◽  
Panel Thickness

The water vapour diffusion resistance of timber materials were tested in a wet climate (relative humidity ranging from 100%to 65% at 20 °C) and in a dry climate (relative humidity ranging from 0% to 65% and from 0% to 35% at 20 °c) with variation by relative humidity and vapour pressure gradient. The diffusion resistance of multilayer solid wood panels lies under or within the range of the solid wood (spruce), tending even to a lower range. This can be attributed to the loosely inserted middle lamella of the used solid wood panels, which were not correctly glued by the manufacturer. The diffusion resistance of the solid wood panels increases with decreasing moisture content and decreasing panel thickness, as well as with increasing water vapour gradient from 818 to 1520 Pa. There were clear differences between the tested timber materials. The diffusion resistance of particle composites is strongly dependent on the specific gravity. Due to laminar particles OSBs(Oriented Strand Boards) have a larger diffusion resistance than chipboards. The water vapour diffusion resistance of OSBs lies within the range of plywood.

scholarly journals Rice: Sulfide-induced Barriers to Root Radial Oxygen Loss, Fe2+ and Water Uptake, and Lateral Root Emergence

2005 ◽  
Vol 96 (4) ◽  
pp. 625-638 ◽  
Author(s):  
JEAN ARMSTRONG ◽  
WILLIAM ARMSTRONG
Keyword(s):  
Water Uptake ◽  
Lateral Root ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

Effects of exposure on water relations and photosynthesis of western hemlock in habitat forms

1976 ◽  
Vol 6 (1) ◽  
pp. 40-48 ◽  
Author(s):  
R. A. Keller ◽  
E. B. Tregunna
Keyword(s):  
Light Intensity ◽  
Water Content ◽  
Water Vapour ◽  
Western Hemlock ◽  
Diffusion Resistance ◽  
The Sun ◽  
Evaporative Demand ◽  
Photosynthetic Rates ◽  
Water Vapour Diffusion ◽  
Vapour Diffusion

Measurements of relative turgidity, transpiration rates, and photosynthetic rates on sun-grown and shade-grown western hemlock (Tsugaheterophylla (Raf.) Sarg.) were used to indicate effects of varying degrees of exposure.The sun-adapted form had low photosynthetic rates but maintained its water content under conditions of high evaporative demand. The shade-adapted form desiccated under exposed conditions, and in contrast with the sun-adapted form, its water vapour diffusion resistance decreased with increasing light intensity.

Radial oxygen loss, a plastic property of dune slack plant species

2005 ◽  
Vol 271 (1-2) ◽  
pp. 351-364 ◽  
Author(s):  
Peter M. van. Bodegom ◽  
Marleen de Kanter ◽  
Chris Bakker Rien Aerts
Keyword(s):  
Plant Species ◽  
Plastic Property ◽  
Dune Slack ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

scholarly journals The effect of silicon on iron plaque formation and arsenic accumulation in rice genotypes with different radial oxygen loss (ROL)

2016 ◽  
Vol 212 ◽  
pp. 27-33 ◽  
Author(s):  
Chuan Wu ◽  
Qi Zou ◽  
Sheng-Guo Xue ◽  
Wei-Song Pan ◽  
Liu Huang ◽  
...  
Keyword(s):  
Plaque Formation ◽  
Iron Plaque ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Arsenic Accumulation ◽  
Rice Genotypes

Cadmium accumulation in and tolerance of rice (Oryza sativa L.) varieties with different rates of radial oxygen loss

2011 ◽  
Vol 159 (6) ◽  
pp. 1730-1736 ◽  
Author(s):  
M.Y. Wang ◽  
A.K. Chen ◽  
M.H. Wong ◽  
R.L. Qiu ◽  
H. Cheng ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Cadmium Accumulation ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

Radial Oxygen Loss in Wetland Plants: Potential Impacts on Remediation of Contaminated Sediments

2013 ◽  
Vol 139 (4) ◽  
pp. 496-501 ◽  
Author(s):  
Katy Euliss Smith ◽  
Tamara Olivia Luna
Keyword(s):  
Contaminated Sediments ◽  
Wetland Plants ◽  
Radial Oxygen Loss ◽  
Oxygen Loss

Rice acclimation to soil flooding: Low concentrations of organic acids can trigger a barrier to radial oxygen loss in roots

2019 ◽  
Vol 42 (7) ◽  
pp. 2183-2197 ◽  
Author(s):  
Timothy David Colmer ◽  
Lukasz Kotula ◽  
Al Imran Malik ◽  
Hirokazu Takahashi ◽  
Dennis Konnerup ◽  
...  
Keyword(s):  
Organic Acids ◽  
Radial Oxygen Loss ◽  
Oxygen Loss ◽  
Soil Flooding ◽  
Low Concentrations

Hygric Properties of HPC with Natural Pozzolana

2016 ◽  
Vol 677 ◽  
pp. 93-97 ◽  
Author(s):  
Jaroslava Koťátková ◽  
Monika Čáchová ◽  
Dana Koňáková ◽  
Eva Vejmelková
Keyword(s):  
Water Vapour ◽  
High Performance ◽  
High Performance Concrete ◽  
Diffusion Resistance ◽  
Supplementary Cementitious Material ◽  
Water Vapour Transport ◽  
Water Vapour Diffusion ◽  
Natural Pozzolana ◽  
Vapour Diffusion ◽  
Liquid Water Transport

The water vapour transport and the liquid water transport of high performance concrete (HPC) with the content of natural pozzolana are the described in this paper. Studied properties are presented by means of water vapour diffusion coefficient, water vapour diffusion resistance factor and absorption coefficient respectively. The natural pozzolana (NP), namely natural zeolite, is used as supplementary cementitious material which affects the durability properties of the end product. The obtained results revealed the effectiveness of NP in the terms of both studied properties when used in small amounts, i.e. at about 20% of cement weight. On the other hand substitutions higher than 40% result in worsening of the resistance of the concrete to water and water vapour ingress and its movement trough the material.

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