9,807 research outputs found
Willow growth in response to nutrients and moisture on a clay landfill cap soil. II: Water use
No full textThis paper describes studies into the effects of soil factors and water stress on water use by willow (Salix viminalis L.) on a clay landfill cap soil and a sandy loam. Individual plants were grown in lysimeters containing these soils under different watering regimes and with different soil amendment treatments. Stemflow and throughfall were measured to determine rainfall entering the lysimeters and evapotranspiration (ET) calculated from a water balance. With plentiful water, seasonal ET increased annually in most treatments, reflecting increases in plant leaf area and dry matter production. For the most vigorous plants, in the sandy loam treatment, it increased from about 360 l plant-1 in the establishment year to almost 1200 l plant-1 in the third year. Seasonal ET was highly correlated with leaf area duration. Nutritional amendment of Oxford clay resulted in plants with larger leaf area and higher dry matter production and seasonal ET than in the unamended treatment. Water stress reduced seasonal ET by up to 41%, as a result of defoliation and stomatal closure. In unstressed plants, in the sandy loam treatment, daily ET rates per unit leaf area reached a maximum of about 1.5 l m-2 d-1 in July. Without nutritional amendment, water use efficiency (WUE) calculated from plant ET and root, stump and stem dry weight, was low for the unamended Oxford clay treatment (1.4 g kg-1) but was similar in the amended clay (5.0 g kg-1) and sandy loam (4.9 g kg-1) treatments. The study has shown the dependence of biomass production by willow on Oxford clay on both nutritional amendment and water availability. Although both nutrients and water could be supplied at these sites by growing SRC within a leachate management system, there are several practical issues like the narrow window of opportunity for mechanised operations and concerns about long-term sustainability which still need to be addressed
Pressure surge suppression using a metallic-plastic-metallic pipe configuration
No full textAbstract not availableJinzhe Gong, Mark L. Stephens, Martin F. Lambert, Aaron C. Zecchin and Angus R. Simpso
Replication of Vesicular Stomatitis Virus in L Cells
No full textTitle: Replication of Vesicular Stomatitis Virus in L Cells, Author: Martin Petric, Location: ThodeA heat resistant strain (HR-LT) of the Indiana serotype of vesicular stomatitis virus was characterized. Virus specific RNA and protein components of the cytoplasmic extract of cells infected with this strain of virus in the presence and absence of interference, were examined.ThesisMaster of Science (MS
Heritability and Linkage Analysis of Appendicitis Utilizing Age at Onset
No full textAppendicitis usually afflicts the young, but there is a large tail in the distribution of onset age. The genetics of this disease are still not well understood. A heritability analysis and genome wide linkage analysis of a large twin dataset was undertaken. Treating age of onset of appendicitis as a censored survival trait revealed a heritability of 0.21, and found evidence of linkage to Chromosome 1p37.3. Author(s): Christopher Oldmeadow 1 * | Kerrie Mengersen 2 | Nicholas Martin 3 | David L. Duffy
Leak-before-break main failure prevention for water distribution pipes using acoustic smart water technologies: case study in Adelaide
No full textAbstract not available.Mark Stephens, Jinzhe Gong, Chi Zhang, Angela Marchi, Luke Dix and Martin F. Lamber
Velocity-Gradient Probability Distribution Functions in a Lagrangian Model of Turbulence
No full textThe Recent Fluid Deformation Closure (RFDC) model of lagrangian turbulence is recast in path-integral language within the framework of the Martin-Siggia-Rose functional formalism. In order to derive analytical expressions for the velocity-gradient probability distribution functions (vgPDFs), we carry out noise renormalization in the low-frequency regime and find approximate extrema for the Martin-Siggia-Rose effective action. We verify, with the help of Monte Carlo simulations, that the vgPDFs so obtained yield a close description of the single-point statistical features implied by the original RFDC stochastic differential equations
Wealth reallocation and sustainability under climate change
No full textClimate change is often described as the greatest environmental challenge of our time. In addition, a changing climate can reallocate natural capital, change the value of all forms of capital and lead to mass redistribution of wealth. Here we explain how the inclusive wealth framework provides a means to measure shifts in the amounts and distribution of wealth induced by climate change. Biophysical effects on prices, pre-existing institutions and socio-ecological changes related to shifts in climate cause wealth to change in ways not correlated with biophysical changes. This implies that sustainable development in the face of climate change requires a coherent approach that integrates biophysical and social measurement. Inclusive wealth provides a measure that indicates sustainability and has the added benefit of providing an organizational framework for integrating the multiple disciplines studying global change.Peer reviewe
Fire department personnel at Station No. 1 , 210 West 3rd Street
No full textStanding (L to R): Clark (?), Del Davis, Al Stephens, 'Choke' Madison, Al Muis, George Jewell; seated (L to R): Earl Cronkite, Walter Lee, George Martin, Ben Robison, 'Tut' Parker, Tom Burke, 'Pop' Miller, Don DiMarzo. Unnamed Captain with white hat, smoking cigar, at right. Same as Photo 492.Standing (L to R): Clark (?), Del Davis, Al Stephens, 'Choke' Madison, Al Muis, George Jewell; seated (L to R): Earl Cronkite, Walter Lee, George Martin, Ben Robison, 'Tut' Parker, Tom Burke, 'Pop' Miller, Don DiMarzo
Fire department personnel at Station No. 1, 210 West 3rd Street
No full textStanding (L to R): Clark (?), Del Davis, Al Stephens, 'Choke' Madison, Al Muis, George Jewell; seated (L to R): Earl Cronkite, Walter Lee, George Martin, Ben Robison, 'Tut' Parker, Tom Burke, 'Pop' Miller, Don DiMarzo. Unnamed Captain with white hat, smoking cigar, at right. Same as Photo 490.Standing (L to R): Clark (?), Del Davis, Al Stephens, 'Choke' Madison, Al Muis, George Jewell; seated (L to R): Earl Cronkite, Walter Lee, George Martin, Ben Robison, 'Tut' Parker, Tom Burke, 'Pop' Miller, Don DiMarz
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