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  • 1
    Electronic Resource
    Electronic Resource
    Reconstruction of Windermere Sewage-Treatment Works (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 8 (1994), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: This sewage-treatment works, which is located within the Lake District National Park, on the shores of England's largest lake, receives flows from the villages of Windermere, Bowness and Troutbeck and serves a population which can double from winter to summer.The paper describes the logistical and other aspects of undertaking construction works within the confines of an existing site whilst maintaining treatment to incoming flows. The background and regulatory influences on the design of the scheme are covered, together with details of the new treatment units and the provision of facilities to strip phosphate from the effluent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.1994.tb01088.x
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  • 2
    Electronic Resource
    Electronic Resource
    Production of a polyclonal antibody to Phellinus pini and examination of its potential use in diagnostic assays (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Forest pathology 29 (1999), S. 0 
    Details
    ISSN: 1439-0329
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In order to differentiate among Phellinus pini, Inonotus tomentosus and Inonotus circinatus a polyclonal antibody was raised to a N-terminal part of 25-kDa P. pini-specific protein. The specificity of the polyclonal antibody produced against a synthetic N-terminal peptide of this protein was investigated for diagnostic purposes using Western immunoblot, indirect enzyme-linked immunosorbent assay (ELISA), and inhibition ELISA techniques. The N-terminal synthetic peptide, used as the immunogen, was found to be more than 80% pure by reverse-phase high-performance liquid chromatography. Following immunization, antisera were collected at three different time intervals. The antibody molecules were purified from the crude antisera using immunoaffinity gel chromatography. Following one-dimensional sodium dodecylsulfate-polyacrylamide gel electrophoresis, Western immunoblot analysis showed that the P. pini I polyclonal-antibody detected the immunogen, the 25-kDa protein, in all but one of the P. pini isolates examined, but in none of the isolates of the nontarget species I. tomentosus and I. circinatus. Nevertheless, cross-reactivity was a problem because the P. pini I polyclonal-antibody also recognized bands at other molecular weights in nearly all of the isolates of the other species tested. With the indirect ELISA the P. pini isolates tended to have higher affinity for the polyclonal antibody than the nontarget species, but some cross-reactivity did occur. Inhibition ELISAs, performed over a range of soluble antigen concentrations (1.56–400 ng/100 μl), failed to show a clear distinction between P. pini and the two Inonotus spp. The low level of cross-reactivity observed for I. tomentosus isolate 52 (9%) was also apparent in the indirect ELISA analysis. All three assays indicated that P. pini isolate 41 was the most antigenic. Despite cross-reactivity, the antibody is useful in Western immunoblots for the diagnosis of most P. pini isolates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0329.1999.00151.x
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  • 3
    Electronic Resource
    Electronic Resource
    Analysis of growth and resource allocation (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 28 (1988), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: At UCPE we are exploring high-level, ecologically based models of growth and resource allocation in herbaceous plants, including weed species. In them, allocation is driven by variables from Plant Strategy Theory, such as below-and above-ground‘environmental stress'. A‘hyperbolic’model is described in which the allocation of resources into above-and below-ground plant parts is jointly controlled by (i) the absolute amounts of below-and above-ground stress that the plant‘perceives'; (ii) the ratio of below-ground to above-ground stress; and (iii) by the maximum growth potential of the plant itself. The inputs to the model are the fraction of its maximum potential that the plant attains and its root-shoot allometric growth coefficient. The outputs from the model are indices of the above-and below-ground stresses‘perceived’by the plant. The latter arc otherwise particularly difficult to estimate when growth and allocation are being controlled simultaneously by several suboptimal environmental variables, as happens in many crop weed systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1988.tb00828.x
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  • 4
    Electronic Resource
    Electronic Resource
    TRISTAR: an expert system for vegetation processes (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Expert systems 8 (1991), S. 0 
    Details
    ISSN: 1468-0394
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Computer Science
    Notes: Abstract: The TRISTAR expert system (TRIangular STrAtegic Rules for British herbaceous vegetation) is a PC-based consultancy tool designed to help bridge the gap between academic plant ecology and practical vegetation management. It is a ‘what if facility, for use by students, naturalists, conservationists, planners, administrators; indeed anyone with an interest in environmental science and management, conservation or reconstruction of herbaceous vegetation. The system is written in Leonardo 3 (Creative Logic Limited, Uxbridge, UK). Release I of TRISTAR deals with the fundamental environmental and management processes which control the composition of British herbaceous vegetation. The system takes a specification of initial steady-state vegetation, asks the user to specify an altered environmental and/or management scenario, and predicts the composition of a new steady-state vegetation in terms of plant-strategic types. The high-level approach through plant strategies makes it possible to construct a very robust rulebase despite a lack of hard information in many areas of understanding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-0394.1991.tb00370.x
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  • 5
    Electronic Resource
    Electronic Resource
    Local climate, topography and plant growth in Lathkill Dale NNR. I. A twelve-year summary of solar radiation and temperature (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 9 (1986), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Data concerning the local climate experienced on the north and south slopes of a limestone dale are presented and interpreted in the form of sequences of monthly means, fitted annual and diurnal waves and tables of integrals and grand means.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1365-3040.ep11612961
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  • 6
    Electronic Resource
    Electronic Resource
    Salt tolerance in Aster tripolium L. I. The effect of salinity on growth (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 10 (1987), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract A study of the growth of the maritime halophyte Aster tripolium L. has been carried out over a range of salinity treatments. The regression approach to growth analysis using frequent small harvests has been used to allow ‘continuous’ measurement of growth over a period of 36 d. Salinity was applied with the major ions present in ratios typical of those found in seawater. Growth was inhibited in terms of both dry weight production and leaf expansion at salinity levels equivalent to 0.625 strength sea water (full culture solution 300) and above, with the greatest effect being seen in terms of leaf area. Aster tripolium did not show increased succulence at high salinity, leaf fresh weight to dry weight ratio in fact declined, whilst leaf fresh weight per unit area remained constant. It should be noted that the plants exhibit low growth rates due to the low light intensity used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1987.tb02080.x
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  • 7
    Electronic Resource
    Electronic Resource
    Salt tolerance in Aster tripolium L. II. Ionic regulation (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 10 (1987), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Measurements of tissue ion contents (Na, K and Cl) were carried out at frequent intervals on plants of Aster tripolium L. grown at a range of salinities for 36 d. Aster tripolium behaved as a typical halophyte showing high levels of inorganic ion accumulation even at low salinities. As salinity increased Na replaced K to a large extent in the shoot but root K was unaffected up to 500 mol m−3 external NaCl. Shoot (Na + K) concentration on a tissue water basis was maintained constant in all treatments throughout the experiment, whereas shoot (Na + K) on a dry weight basis showed marked fluctuations in some treatments. An increase in (Na + K) per gram dry weight was, however, accompanied by a parallel increase in fresh weight: dry weight (FW : DW) ratio. Transport of (Na + K) to the shoot per unit root weight changed during the experiment in the manner expected, given the observed changes in shoot relative growth rate and FW : DW to result in a constant shoot (Na + K) concentration on a water basis.Chloride was the major balancing anion in the shoot at high salinity, but never accounted for more than 38% of the (Na + K) found in the root tissue. At all salinities (Na + K) salts accounted for the majority of the measured shoot sap osmotic potential. The interactions between salinity, growth, ion transport and osmotic adjustment are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1987.tb02081.x
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  • 8
    Electronic Resource
    Electronic Resource
    Local climate, topography and plant growth in Lathkill Dale NNR. II. Growth and nutrient uptake within a single season (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 9 (1986), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract In a 30-week field experiment, observations on growth and nutrient uptake in potted plants were made concurrently with soil and air temperatures on north- and south-facing slopes. Parallel observations were also made in a controlled environment. Growth in the field was slow but steady, declines in shoot weight fraction with time being matched by increases in rate of dry weight increment per unit of shoot. Increases in root weight fraction, however, failed to match low and declining rates of nitrogen uptake per unit of root; hence, nutrient concentrations generally declined with time. Thermal time in the form of degree-day integrals above the base 3°C was found to correlate well with growth, each degree day contributing a 0.16% increase in total dry weight, on average. Soil, locational and moisture effects caused this average to vary ca. two-fold in either direction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1365-3040.ep11613478
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  • 9
    Electronic Resource
    Electronic Resource
    Fourth-order method for solving the Navier-Stokes equations in a constricting channel (1997)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 25 (1997), S. 1119-1135 
    Details
    ISSN: 0271-2091
    Keywords: fourth-order methods ; Navier-Stokes equations ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A fourth-order numerical method for solving the Navier-Stokes equations in streamfunction/vorticity formulation on a two-dimensional non-uniform orthogonal grid has been tested on the fluid flow in a constricted symmetric channel. The family of grids is generated algebraically using a conformal transformation followed by a non-uniform stretching of the mesh cells in which the shape of the channel boundary can vary from a smooth constriction to one which one possesses a very sharp but smooth corner. The generality of the grids allows the use of long channels upstream and downstream as well as having a refined grid near the sharp corner. Derivatives in the governing equations are replaced by fourth-order central differences and the vorticity is eliminated, either before or after the discretization, to form a wide difference molecule for the streamfunction. Extra boundary conditions, necessary for wide-molecule methods, are supplied by a procedure proposed by Henshaw et al. The ensuing set of non-linear equations is solved using Newton iteration. Results have been obtained for Reynolds numbers up to 250 for three constrictions, the first being smooth, the second having a moderately sharp corner and the third with a very sharp corner. Estimates of the error incurred show that the results are very accurate and substantially better than those of the corresponding second-order method. The observed order of the method has been shown to be close to four, demonstrating that the method is genuinely fourth-order. © 1997 John Wiley & Sons, Ltd.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Assessment of the results from data processing systems using a digital chromatogram simulator (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 347-355 
    Details
    ISSN: 0935-6304
    Keywords: Simulation of chromatograms ; Data processing ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A digital chromatogram simulator has been used to evaluate the performance of data handling systems. The simulator can synthesize chromatograms with any desired shape from a library of peaks based on real peak shapes. Once generated, the chromatograms can be reproduced exactly any number of times.The algorithms used in data handling systems have a significant effect on the results they produce. An object of this work was to examine how well the true size of a peak was reported when the peak was detected overlapping with other peaks. A series of experiments was therefore performed in which peaks were overlapped by different amounts and in different situations. The reported results from the data systems were compared with the results which would have been reported had the peaks been fully resolved. A significant difference was found between the overlap results and the fully resolved results, which did not have a linear relationship with the parameters tested.The chromatogram simulator was found to be a powerful tool in assessing the performance of the data systems. It offers a valuable means of evaluating the quality of the results produced by these systems.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080706
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