منابع مشابه
Effects of Sound Stimulation on Physiological and Biochemical Responses of ‘Salvia splendens’
Plants are influenced inevitably by environmental stresses due to their immobility. Sound waves are one of these environmental factors affecting plants. This study was designed to understand the relationship between sound waves and plant responses that is still low knowledge. For this purpose, Salvia splendens, one of the common plants in urban green spaces, were influenced by sound wa...
متن کاملThe Denaturation of Proteins by Sound Waves of Audible Frequencies
When egg albumin in aqueous solution at the isoelectric point is subjected to the action of intense sound waves of audible frequency, a coagulum is produced (1). A previous investigation (2) indicated that such sound-denatured’ albumin is immunologically similar to denatured albumin prepared in other ways; e.g., by heat in acid, alkdme, or neutral solution, by alcohol, or by acid or alkali. Wu ...
متن کاملUnified physiological model of audible-visible speech production
In this paper, vocal tract and orofacial motions are measured during speech production in order to demonstrate that vocal tract motion can be used to estimate its orofacial counterpart. The inversion, i.e. vocal tract behavior estimation from orofacial motion, is also possible, but to a smaller extent. The numerical results showed that vocal tract motion accounted for 96% of the total variance ...
متن کاملPrevalence and predictors of audible physiological third heart sound in a population sample aged 36 to 37 years.
BACKGROUND A physiological third heart sound (S3) is common in youth but allegedly very rare after the age of 40 years. The mechanism of its disappearance is not known. The aim of this work was to study the prevalence and predictors of physiological S3 in a population-based sample of persons approaching 40 years of age. METHODS AND RESULTS A random sample of 120 persons born in 1954 was invit...
متن کاملAn Ultrasound Based Instrument Generating Audible and Tactile Sound
This paper, describes the second phase of an ongoing research project dealing with the implementation of an interactive interface. It is a “hands free” instrument, utilizing a non-contact tactile feedback method based on airborne ultrasound. The three main elements/components of the interface that will be discussed in this paper are: 1. Generation of audible sound by self-demodulation of an ult...
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ژورنال
عنوان ژورنال: Science
سال: 1969
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.166.3904.533