An algorithm for detection and cancellation of sidetone oscillations in mobile phones is presented. The sidetone signal is represented by a 4 order LPC polynomial, whose root structure is analysed by a computationally efficient twostage approach. In difference to LMS based adaptive filters this approach offers a fast and reliable detection of evolving oscillations. A notch filter with small ban...

High sensitivity and low background noise are critical for the detection of small nanoparticles by ICP-MS. The signal generated by the ionization of a nanoparticle decreases as the cube root of the diameter. This means detection of very small particles, such as 10 nm Au particles (NIST 8011), requires ICP-MS instrumentation with significantly higher sensitivity than is required for the more typ...

INTRODUCTION The most frequent adverse effect of canine impaction is resorption of the adjacent incisors. The subjective image quality and the radiographic diagnostic accuracy for detection of simulated canine-induced external root resorption lesions in maxillary lateral incisors were compared among 6 cone-beam computed tomography (CBCT) systems in vitro. METHODS A child cadaver skull in the ...

introduction: inappropriate condensation of gutta-percha or improper use of sealer can lead to voids in root canal filling material and consequent failure of the treatment. timely detection of voids within root canal filling may prevent complications. in this study, we compared the accuracy of digital and conventional radiograph for detecting voids within root canal fillings . materials & metho...

Root exudates have important, yet incompletely known, roles in plant physiology, mainly in rhizosphere interactions with other organisms. Proline might play a critical role in protecting plants under stress, particularly under saline conditions. However, as far as we know, no attempts have been made to determine the proline content of root exudates. Here, we present preliminary results of the q...

This article addresses the detection and diagnosis of oscillations in process measurements. Principal components analysis (PCA) can be applied to the power spectra for detection of groups of oscillatory process measurements. In cases where a well defined periodic oscillation is detected then diagnosis of the root cause is possible using a signature that grows stronger closer to the source. Two ...

The early detection of vertical root fractures can be difficult and treatment frequently hopeless. Texts suggest several treatment modalities, ranging from extraclion to hemisection and radisectomy in multirooted teeth. The subject is particularly well documented in articles by Bender and Freedland (1), Bouchan et al. (2), and Mori and lijima (3). Pitts and Natkin (4) have also studied the prob...

RNA from rat dorsal root ganglia was analyzed in search of potentially beneficial cytokines that are induced in dorsal root ganglia by nerve injury. By reverse transcription, the PCR, and Southern blotting, interleukin-6 mRNA was detected during development but not in normal adult dorsal root ganglia, reappeared within 1 d of sciatic nerve transection, was maximally increased after 2 and 4 d, a...

A study to determine whether root rot infestations can be detected using high spatial resolution digital multispectral video (DMSV) data was conducted in the Imperial Valley of California. DMSV data were collected on two dates over 25 fields during the summer of 1999 using a light aircraft. The DMSV images included four spectral bands centered on 530 nm, 570 nm, 650 nm and 750 nm, with nominal ...