Results of a feasibility study indicate that measures of trans-stenotic pressure gradients can be safely and effectively obtained in intracranial large arteries through the use of a guidewire. Use of ...

the UV to about 3.5um in the infrared, and their melting point is 2040 C. Sapphire fibres are used for pyrometry in high temperature systems such as turbine and internal combustion engines. While ...

Journal of Experimental Botany, Vol. 43, No. 255 (October 1992), pp. 1325-1331 (7 pages) The magnitude of gradients of water potential in growing tissues will reflect processes which limit growth rate ...

THE scale method is still regarded as the most accurate and reliable method for measuring refractive index gradients and is extensively used in diffusion and sedimentation measurements. The ...

A method is described for measuring root and rhizome growth along temperature gradients in the field and under controlled conditions. Wedgeshaped Plexiglas sod boxes equipped with thermocouples are ...

Morphogens are ‘form-generating’ substances that spread from localized sites of production and specify distinct cellular outcomes at different concentrations. A cell's perception of morphogen ...

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