An understanding of the complex problems of land use competition requires an appreciation of natural processes, cultural values, economic imperatives and political agendas. This integrated understanding is an important component of the study program for tertiary students about to complete their professional qualification in landscape architecture at the Queensland University of Technology. This...

Large surface infrared photonic crystals with reflectance higher than 90% have successfully been synthesized by self-assembling large size SiO2 spheres, of 0.8 – 4.5 m diameters, followed by melt infiltration with the chalcogenide glass Ge33As12Se55 and the removal of the SiO2 spheres by chemical etching. The sphere size and the periodicity of the templates were chosen to guarantee the formatio...

Since the first clear demonstration of the existence of 'specific' antigens in experimental tumours (Gross, 1943; Foley, 1953), the extensive use of syngeneic animals has resulted in the identification of tumour-associated or characteristic macromolecules ('antigens') in association with spontaneously occurring or experimentally induced tumours (Old and Boyse, 1964; Baldwin, 1970; Stonehill and...

I AM very much honoured by your invitation that I should deliver an oration in this valuable and distinguished series that has been established in memory and honour of the life of Robert Campbell, and I wish to speak of the clinical value of radioactive isotopes. In the year in which the Robert Campbell memorial orations were founded, Rutherford had already detected faint scintillations on the ...

OBJECTIVES to evaluate the diagnostic value of clinical symptoms and signs in enteric fever and to propose a clinical diagnostic criterion. DESIGN Prospective observational study. SETTING Kathmandu Medical College, Teaching Hospital, Kathmandu, Nepal. MATERIALS AND METHODS febrile patients with clinical diagnosis of enteric fever were included in the study with the aim of confirming diagn...

A Lectmre lelivereti at the Queen's University of Belfast on October 3ist, 1955, un/er the auspices of the British Council. You all know the story about William Beaumont, the army surgeon, who took care of Alexis St. Martin, the young French Canadian, who was severely wounded by an accidental discharge of a shotgun, which left him for the rest of his life with a hole in his side, through which ...

Medical research that involves human subjects presents what appears to be an intractable ethical problem: patients are exposed to risks in order to create valuable knowledge. A central goal of research is to produce knowledge that is "important," "fruitful," or that will have "value." Indeed, federal regulations require that research risks be reasonable in proportion to potential benefits, and ...