the link between allergic rhinitis and asthma is well known. bronchial hyperreactivity (bhr) may be present in rhinitis. the present study was aimed to compare airway responses in patients  with rhinitis symptoms alone following exercise challenge, and to  determine relationship of two different respiratory function tests. 98 subjects with rhinitis were investigated by spirometry and impulse os...

We studied temporal processing of chromatic and luminance perturbations of a 600-nm field, measuring both modulation sensitivity (sinusoidal frequencies from 0.25 to 40 Hz) and pulse-detection thresholds (pulse durations from 5 to 2560 msec) for mean luminances of 0.9 to 900 Td and field sizes of 0.5 degrees to 8 degrees. Chromatic stimuli were produced by antiphase modulation of lights matched...

This paper reports comparative analyses of phase noise in Hartley, Colpitts, and common-source cross-coupled differential pair LC oscillator topologies in 28 nm CMOS technology. The impulse sensitivity function is used to carry out both qualitative and quantitative analyses of the phase noise exhibited by each circuit component in each circuit topology with oscillation frequency ranging from 1 ...

Two main tasks of image processing are noise filtering and image enhancement.During image acquisition and transmission the images are corrupted by noise.these noise will affect the performance of image processing mehods,herefore to improve the performance efficient denoising technique is necessary for image processing methods.In this paper the performance of combined filter in impulse denoising...

A total of 16 rabbits developed atherosclerosis after receiving a diet containing 1% cholesterol and 6% sunflower seed oil for up to 67 weeks. Their mean blood pressure rose from 85 to 114 mm Hg. The aortic arch region was isolated and perfused with Krebs-Henseleit solution, and the impulse activity of 70 single aortic and 8 right subclavian baroreceptor fibers was studied during step increases...

We introduce a projection based multi-channel restoration method which is useful in cases for which there is no a priori information about the input signal. The method is especially helpful in situations where a large number of specimens are later combined to achieve additional noise reduction. We describe the approach and discuss the problem of restoring electron micrographs. The method does r...

Transient waves, like all other acoustic waves, will diffract around solid objects, such as measurement instrumentation. A derivation of an impulse response function on the surface of a rigid sphere, based on linear, classical scattering theory, is presented. The theoretical impulse response function is validated using an experiment with blast noise. An application of the impulse response funct...