scholarly journals Contenido de agua en la madera de especies del bosque tropical caducifolio durante la época seca

2017 ◽  
pp. 113
Author(s):  
Ernst Detlef Schulze ◽  
Harold A. Mooney ◽  
Stephen H. Bullock ◽  
Ana Mendoza
Keyword(s):  
Water Content ◽  
Deciduous Forest ◽  
Forest Type ◽  
Life Forms ◽  
Tropical Deciduous Forest ◽  
Deciduous Trees ◽  
Relative Water ◽  
Maximum Water ◽  
Stem Water ◽  
Maximum Water Content

The maximum water content, the relative water content and the water depletion of wood were studied in 41 species of a tropical deciduous forest during the dry season. Ther is a significant correlation between the maximum water content and the specific wood weight. Also, water de pletion per wood weight is significantly correlated with the specific wood weight. On a wood volume basis, deciduous trees unse more stem water than water-storing trees. These data are discussed with respect to the dominance of life forms in this forest type

Water loss dynamics in maize hybrids with different genotypes

2005 ◽  
Vol 53 (2) ◽  
pp. 153-159 ◽  
Author(s):  
A. C. Dobos ◽  
G. Szabó
Keyword(s):  
Water Content ◽  
Water Loss ◽  
Environmental Parameters ◽  
Close Correlation ◽  
Water Dynamics ◽  
Maize Production ◽  
Grain Moisture ◽  
Maximum Water ◽  
The Individual ◽  
Maximum Water Content

Tests were made on the water dynamics of water loss in maize at two locations at major maize production areas, Debrecen and Szeged, as a function of the heat sum required up to physiological ripening. The maximum water content was found to vary according to the hybrid and the year. No significant differences were found between the effective heat sums associated with maximum values within a year, the difference being 2-4 calendar days. There was a close correlation between the maximum grain water content and the length of the generative phase for a given hybrid in a given year. Better water supplies (1998) resulted in higher maximum water content values, which indirectly promoted longer and more intensive dry matter incorporation. Of all the environmental parameters, the drying down rate is primarily determined by the temperature. The changes in grain moisture content in a specific hybrid can be characterised by a joint linear graph. The drying down rate of the individual hybrids was determined by examining the b term of the linear equation.

The relationship between solar radiation interception and soil water content in a tropical deciduous forest in Mexico

CATENA ◽  
1999 ◽  
Vol 36 (1-2) ◽  
pp. 153-164 ◽  
Author(s):  
L Galicia ◽  
J López-Blanco ◽  
A.E Zarco-Arista ◽  
V Filips ◽  
F Garcı́a-Oliva
Keyword(s):  
Solar Radiation ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Deciduous Forest ◽  
Tropical Deciduous Forest ◽  
Radiation Interception ◽  
The Relationship

Study of Water Stability of AC and SMA Asphalt Mixture Based on Water Content

2012 ◽  
Vol 457-458 ◽  
pp. 435-438
Author(s):  
Xue Dong Guo ◽  
Cao Jian ◽  
Xiang Yang Fang
Keyword(s):  
Tensile Strength ◽  
Water Content ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Splitting Tensile Strength ◽  
Water Stability ◽  
Paper Study ◽  
Saturated Condition ◽  
Maximum Water ◽  
Maximum Water Content

In this paper，study water content and water stability of AC and SMA asphalt mixtures, and reach the following conclusions. In the normal saturated condition, the maximum water content of AC and SMA asphalt mixture is 0.28% and 0.32%.And in the vacuum saturated condition, the maximum water content of AC and SMA asphalt mixture is 0.8% and 0.78%.The water of AC and SMA asphalt mixture separately take 8 days and 9 days to drain completely in the normal saturated condition. But in the vacuum saturated condition, the time is more than two months. In different water content conditions, the splitting tensile strength of AC asphalt mixture is 0%> 100%> 25%> 75%> 50%.But the splitting tensile strength of SMA asphalt mixture is 0%> 100%> 25%> 50%> 75%.

Evidence from feldspar compositions of high temperatures in granite sheets in the Scourian complex, N.W. Scotland

1982 ◽  
Vol 46 (338) ◽  
pp. 73-76 ◽  
Author(s):  
Hugh R. Rollinson
Keyword(s):  
Critical Temperature ◽  
Water Content ◽  
Bulk Composition ◽  
Alkali Feldspar ◽  
Granulite Facies ◽  
Granulite Facies Metamorphism ◽  
Critical Composition ◽  
Facies Metamorphism ◽  
Maximum Water ◽  
Maximum Water Content

AbstractMesoperthite feldspars from hypersolvus granites, with granulite-facies mineralogy from the Scourian complex, N.W. Scotland have an average bulk composition of (Ab0.58Or0.42)88An12. The mesoperthites have an Ab/Or ratio close to the critical composition of the alkali feldspar solvus for anorthite-free compositions. The critical temperature of the ternary feldspar solvus is estimated at high anorthite contents and used to indicate a temperature in excess of 1000°C for the crystallization of the granite sheets prior to granulite-facies metamorphism and permits a maximum water content in the melt of 1%.

Uing DSC Technology for Water Content and Thermal Properties Analysis of Carassius Organs

2011 ◽  
Vol 374-377 ◽  
pp. 1050-1053
Author(s):  
Peng Zeng ◽  
Tian Ji Chen ◽  
Jiang Shen
Keyword(s):  
Heat Capacity ◽  
Thermal Properties ◽  
Specific Heat ◽  
Water Content ◽  
Freezing Temperature ◽  
Maximum Water ◽  
Temperature Equilibrium ◽  
Freeze Water ◽  
Ventral Muscle ◽  
Maximum Water Content

Thermal properties of Brain, gill, hepatopancreas, muscle and blood of Carassius living in 8°C were investigated by differential scanning calorimeter. Between 20°C～-40°C , blood showed lower specific heat capacity than other organs. It might help temperature equilibrium in organism. Blood and brain had higher freezing temperature. Brain showed the maximum water content but less freeze water while ventral muscle had the lowest water content but high freeze-able water. Hepatopancreas had both low water and freeze-able water content.

scholarly journals Branches and Leaves Growth Patterns in Myricaria laxiflora Remnant Populations Are Affected by Human-altered Water Level Fluctuations

2020 ◽  
Author(s):  
Shoupeng Guan ◽  
Fang-Qing Chen ◽  
Jumei Zhou ◽  
Yongwen Huang ◽  
Dayong Fan
Keyword(s):  
Water Content ◽  
Water Level ◽  
Plant Height ◽  
Growth Traits ◽  
Leaf Growth ◽  
Water Level Fluctuations ◽  
Middle Region ◽  
Lower Region ◽  
Maximum Water ◽  
Maximum Water Content

Abstract Background: The construction of the Three Gorges-Gezhou Dam altered the water level fluctuation pattern in the downstream habitat of the endangered species Myricaria laxiflora. This study investigated how branch and leaf growth traits of M. laxiflora remnant populations changed to adapt the environmental stress caused by human-altered water level fluctuations.Results:Due to such disturbance, branch and leaf growth traits of M. laxiflora populations exhibited significant differences across water level conditions. The number of secondary branches, plant height, and leaf number of the plants in the upper area of the habitat were significantly higher than that in the middle and lower river bank areas. The longest secondary branch length of the plants in the upper and middle region was significantly higher than that in the lower region. The branch and leaf volume of plants in the middle region was significantly higher than that in the upper and lower region. The maximum water content of plants in the middle and lower region was significantly higher than that in the upper region. Principal component analysis showed that the branch and leaf traits of plants changed with decreasing water level toward to decreasing plant height, leaf number and the number of secondary branches, and increasing maximum water content of branch and leaves. Conclusions: The phenotypic plasticity of M. laxiflora plants in branch and leaf growth traits alleviates the impacts of human-regulated water level fluctuations. However, the above ground growth of M. laxiflora plants distributed at the middle and lower areas of the fluctuation zone is still negatively affected.

scholarly journals Hydrophilic Polymers and Wetting Agents Affect Absorption and Evaporative Water Loss

HortScience ◽  
1993 ◽  
Vol 28 (6) ◽  
pp. 633-635 ◽  
Author(s):  
Allyson M. Blodgett ◽  
David J. Beattie ◽  
John W. White ◽  
George C. Elliott
Keyword(s):  
Water Absorption ◽  
Water Content ◽  
Water Loss ◽  
Hydrophilic Polymers ◽  
Wetting Agent ◽  
Hydrophilic Polymer ◽  
Evaporative Water ◽  
Maximum Water ◽  
Maximum Water Content ◽  
Container Capacity

A plantless system using subirrigation was developed to measure water absorption and loss in soilless media amended with hydrophilic polymers, a wetting agent, or combinations of these amendments. Peat-perlite-vermiculite and bark-peat-perlite controls achieved 67% and 52% of container capacity, respectively, after 20 daily irrigation cycles. Maximum water content of amended media was 78% of container capacity. Adding only a hydrophilic polymer did not increase total water content significantly. Adding a wetting agent increased water absorption in both media. However, when hydrophilic polymer and wetting agent were present, the medium absorbed more water than with wetting agent alone. More extractable water was removed from media containing wetting agent. Water loss rate by evaporation was not affected significantly by medium, hydrophilic polymer, wetting agent, or any combination of these variables.

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