Direct Sound
Mostrando 37-42 de 42 artigos, teses e dissertações.
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37. Reanalysis of the occurrence of back pain among construction workers: modelling for the interdependent effects of heavy physical work, earlier back accidents, and aging.
OBJECTIVES: To re-examine the relation between heavy physical work and the occurrence of sciatic pain among construction workers reported previously to be absent in an epidemiological study. METHODS-Poisson log linear regression was used to model for the frequency of sciatic pain among concrete reinforcement workers and maintenance house painters with adjust
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38. Microbial Biogeography along an Estuarine Salinity Gradient: Combined Influences of Bacterial Growth and Residence Time
Shifts in bacterioplankton community composition along the salinity gradient of the Parker River estuary and Plum Island Sound, in northeastern Massachusetts, were related to residence time and bacterial community doubling time in spring, summer, and fall seasons. Bacterial community composition was characterized with denaturing gradient gel electrophoresis
American Society for Microbiology.
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39. Compressive nonlinearity in the hair bundle's active response to mechanical stimulation
The auditory system's ability to interpret sounds over a wide range of amplitudes rests on the nonlinear responsiveness of the ear. Whether measured by basilar-membrane vibration, nerve-fiber activity, or perceived loudness, the ear is most sensitive to small signals and grows progressively less responsive as stimulation becomes stronger. Seeking a corr
The National Academy of Sciences.
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40. Mechanical properties of the lateral cortex of mammalian auditory outer hair cells.
Mammalian auditory outer hair cells generate high-frequency mechanical forces that enhance sound-induced displacements of the basilar membrane within the inner ear. It has been proposed that the resulting cell deformation is directed along the longitudinal axis of the cell by the cortical cytoskeleton. We have tested this proposal by making direct mechanical
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41. Aetiology, pathogenesis, and pathology of cervical neoplasia.
Early epidemiological studies of cervical neoplasia suggested a causal relation with sexual activity and human papillomaviruses (HPVs) have emerged as prime suspects as venerally transmitted carcinogens. HPVs fall into two broad camps: low risk types, associated with cervical condylomas and CIN 1; and high risk types (mostly 16 and 18), found in 50-80% of CI
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42. Early changes in left ventricular subendocardial function after successful coronary angioplasty.
OBJECTIVE--To study the early effects of coronary angioplasty on resting left ventricular long axis function, reflecting that of the subendocardium. DESIGN--Prospective echocardiographic and Doppler examination of patients with coronary artery disease, before and after single vessel coronary angioplasty. SETTING--A tertiary referral centre for cardiac diseas