I. Davies

Learn More
Experimental acidification of a small lake from an original pH value of 6.8 to 5.0 over an 8-year period caused a number of dramatic changes in the lake's food web. Changes in phytoplankton species, cessation of fish reproduction, disappearance of the benthic crustaceans, and appearance of filamentous algae in the littoral zone were consistent with(More)
A pilot study of the perceptual characteristics of ultrasonic textured images is described. Scans of four models performed on four real-time machines optimised for display of a normal liver were used. A trial with 22 observers indicated that the model that gave images closest to the liver image varied between machines. A second, paired similarity test with(More)
PURPOSE This study tested the feasibility of using an upright eyedrop bottle (UEB), a device designed to assist patients with eyedrop placement without reclining their head. PATIENTS AND METHODS Experienced eyedrop users were enrolled who answered "yes" to the question, "Do you ever have trouble getting your eyedrops in?" After being shown a multimedia(More)
To estimate the internal pit depth growth and reliability of aged oil and gas pipelines, a Monte Carlo simulation approach was adopted. The average maximum pit depths of corroded pipelines were correlated with the operating parameters-temperature, CO2 partial pressure, pH, flow rate, sulphate ion concentration, chloride ion concentration, water cut and wall(More)
  • D M Rosenberg, I J Davies, D G Cobb, A P Wiens, D Galloway
  • 2001
List of Figures Figure 1 Sampling gear for lakes and streams a: Kick net b: Activity trap c: Ekman grab d: Sieve bag for Ekman samples e: Vertical tow net (i) Figure 2 Example of a typical catchment showing the drainage divide and stream-order analysis, using the Strahler (1964) system. Figure 3 Sketch of a sample stream reach indicating channel and(More)
The reliability of agar gel electrophoresis in the measurement of high-affinity saturable estrogen-binding component in the cytosol of the rat pituitary gland and anterior hypothalamus was assessed. The available binding sites were determined in small samples with good precision and accuracy. Incubation with 100-fold competitor was more satisfactory than(More)
  • 1