Adfreezing of insulated residential basements: an hypothesis

1987 ◽  
Vol 14 (5) ◽  
pp. 708-710
Author(s):  
K. D. Pressnail ◽  
J. Timusk
Keyword(s):  
Soil Moisture ◽  
Bond Strength ◽  
Key Words ◽  
Thermal Insulation ◽  
Frost Heave ◽  
Thermal Gradients ◽  
Moisture Movement ◽  
Foundation Wall

Concern has been expressed that recent increases in thermal insulation levels of residential basements in areas of seasonal frost may increase the risk of damage to foundations due to frost heave and adfreezing of the soil to the foundation wall. An hypothesis is presented which states that the adfreezing bond strength is affected by the direction of soil moisture movement in response to thermal gradients. This hypothesis may be used to explain why there have been no reported adfreezing problems associated with heated, insulated residential basements. Key words: adfreezing, basement, frost heave, insulation, moisture.

Two Way Indicator Species Analysis (TWINSPAN) of the Herbaceous Vegetation in an Inland Wetland Ecosystem of Doon Valley Himalaya, India

1970 ◽  
Vol 3 ◽  
pp. 23-31 ◽  
Author(s):  
R. K. Manhas ◽  
M. K. Gautam ◽  
Deepa Kumari
Keyword(s):  
Soil Moisture ◽  
Key Words ◽  
Plant Species ◽  
Indicator Species ◽  
Indigenous Species ◽  
Indicator Species Analysis ◽  
Wetland Ecosystem ◽  
Herbaceous Vegetation ◽  
Doon Valley ◽  
Species Analysis

In swamp distribution, dominance and survival of a species is very much governed by the soil moisture and period of flooding. The present study was conducted to classify the communities and plant species, and to have an idea about various associations of plants present in the swamp with respect to soil moisture. Two way indicator species analysis (TWINSPAN) classified the communities into four and plant species into eleven groups. The communities with least soil moisture were the first to be segregated and with highest soil moisture last. Similarly, the species growing in drier condition was clustered separately from the moisture loving indigenous species. Key words: TWINSPAN; vegetation; inland wetland; India DOI: 10.3126/jowe.v3i0.2433 Journal of Wetlands Ecology, (2009) Vol. 3, pp 23-31

scholarly journals Stomatal Frequency and Distribution in Mustard (Brassica juncea L.) in Relation to Soil Moisture

1970 ◽  
Vol 42 (3) ◽  
pp. 353-356
Author(s):  
NK Paul ◽  
RK Mondal
Keyword(s):  
Soil Moisture ◽  
Key Words ◽  
Brassica Juncea ◽  
Stomatal Frequency

Effect of soil moisture on stomatal frequency and distribution of mustard was studied. The irrigated plants had significantly higher number of stomata on both the adaxial and abaxial surfaces of leaf than the rainfed plants. No significant effect of soil moisture on stomatal frequency of stem and pod was found. Key words: Mustard, soil moisture, stomatal frequency, pod. Bangladesh J. Sci. Ind. Res. 42(3), 353-356 2007

SOIL AND SUBSOIL MOISTURE ACCUMULATION DUE TO DRYLAND AGRICULTURE IN SOUTHERN ALBERTA

1985 ◽  
Vol 65 (4) ◽  
pp. 805-810 ◽  
Author(s):  
H. W. CHRISTIE ◽  
D. N. GRAVELAND ◽  
C. J. PALMER
Keyword(s):  
Soil Moisture ◽  
Key Words ◽  
Causative Agent ◽  
Salt Content ◽  
Cultivated Land ◽  
Soluble Salts ◽  
Dryland Agriculture ◽  
Dryland Salinity ◽  
Native Prairie ◽  
Southern Alberta

Subsoil moisture accumulation due to cultivation and particularly summerfallowing is considered as an important causative agent of dryland salinity. However, few studies have been conducted to quantify the magnitude of this accumulation. The amount of additional moisture that had accumulated under cultivated land as compared to adjacent native prairie was determined at two sites in Southern Alberta. In comparison to noncultivated sites, a total of 74.0 cm of additional moisture was found under the cultivated area of a Dark Brown Chernozem and 36.2 cm under a Brown Chernozem to a depth of 6 m. Only relatively insignificant changes in salt content were found. Key words: Dryland salinity, soil moisture, soluble salts

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