The principles and technique of spectral phonocardiography have been described in detail in earlier publications from this laboratory (McKusick et al., 1954). The method provides detailed frequency-time-intensity plots of cardiovascular sound. It resembles in some respects the manner of operation of the auditory mechanism on these sounds. In essence the spectral phonocardiogram is made up of a ...

Some N¬-acyl-N'-aryl thiourea derivatives 4(a-f) have been prepared by the reaction of acyl halides ammonium thiocyanate and aryl amines. The structures of synthesized compounds have been characterized by IR, 1HNMR spectral studies. The synthesized compounds 5(a-f) have been screened for antibacterial activity. The effect of the structure of the investigated compounds on the antibacterial activ...

Optical material properties have been studied in a wide wavelength range. The aim is future use of spectral design for camouflage. The main characterization techniques used in this work are Reflection Spectroscopy, Scatterometry (BRDF) and Mueller Matrix Ellipsometry. Six camouflage evaluation criteria based on reflection, emissivity, polarization, gloss, dynamic coloring and broad band propert...

The interaction of concanavalin A, the phytohemagglutinin of the jack bean, with a variety of glycosides has been studied by the technique of ultraviolet difference spectroscopy. Whereas methyl a-D-glUC0and manno-pyranoside gave rise to relatively low intensity difference spectra, p-nitrophenyl a-D-mannopyranoside and a-D-glucopyranoside yielded large difference spectra upon interaction with co...

This paper considers the problem of estimating the spectrum of real-valued signals. We propose real-valued versions of the Capon and the APES spectral estimators. The estimators are derived as members of the Matched-Filterbank (MAFI) estimator class as introduced in [1]. Furthermore, we show that the real-valued estimators will be unbiased, whereas the complex-valued estimators will have a (sli...

Music is one of the strongest inducers of emotion in humans. Melody, rhythm, and harmony provide the primary triggers, but what about timbre? Do the musical instruments have underlying emotional characters? For example, is the well-known melancholy sound of the English horn due to its timbre or to how composers use it? Though music emotion recognition has received a lot of attention, researcher...

The scaling of nanometer technology has had a major impact on the power dissipation of CMOS circuits. As transistor size decreases it has become apparent that leakage power is becoming a dominant fighting force against future technology. In this paper the importance of static power consumption on the design of new and advanced CMOS technology is explored with the investigation of leakage power ...