0198 January 2007 | Volume 4 | Issue 1 | e32 Correction: Air Travel and the Spread of Influenza: Important Caveats Cécile Viboud, Mark A. Miller, Bryan T. Grenfell, Ottar N. Bjørnstad, Lone Simonsen In PLoS Medicine, volume 3, issue 11, doi:10.1371/journal.pmed.0030503: Figure 1 from this correspondence was transposed with Figure 1 from the related correspondence by Brownstein and colleagues (“...

Optical aberrations that are due to high-speed turbulence in the aero-optical regime are corrected with optical phase conjugation based on coherent population trapping in sodium vapor. Experimental measurements of an unheated, forced helium jet in air have demonstrated aberration correction by a factor of 7.8 at a forcing frequency of 18kHz with an optical power gain of 32.

We present an attenuation-corrected "nondiffracting" Airy beam. The correction factor can be adjusted to deliver a beam that exhibits an adjustable exponential intensity increase or decrease over a finite distance. A digital micromirror device that shapes both amplitude and phase is used to experimentally verify the propagation of these beams through air and partially absorbing media.

The avian respiratory system is different from that of mammals. Although some surgical techniques can be adapted from those used in mammals, many are unique to avian patients (e.g., choanal atresia correction and air sac cannulation). This article reviews the common surgeries of the upper and lower respiratory systems and describes surgical techniques for the treatment of chronic sinusitis and ...

In many fields of science there are multivariate observations which are generated by a (physical) linear mixing process of contributions from different sources. If it is assumed that the composition of the sources is constant for different observations, these observations are, up to measurement error, non-negative linear combinations of a fixed set of so-called source profiles which characteriz...

We propose a novel cross-layer analytic approach to performance evaluation of delay/loss sensitive IP-based applications running over the wireless channels. We firstly extend the small-scale propagation model representing the received signal strength to IP layer using the cross-layer mapping. Then, we replace the resulting IP layer wireless channel model by an artificial equivalent arrival proc...

Using sie®e-tray air stripping as a means of remo®ing contaminants from surfactant solutions was studied to determine if tray air stripping can be applied successfully to treating surfactant-containing wastewaters and, if so, to de®elop a quantitati®e approach for designing tray air-stripping systems for treating surfactant-containing wastewaters. High-concentration surfactant solutions were pr...

A case of bladder explosion with wide rupture during transurethral resection of the prostate (TURP) is reported. Immediate cystography was performed and the patient was promptly operated; the postoperative course was uneventful. Intravesical explosion is caused by explosive gas formation and the more dangerous combination is the mixture of air and hydrogen; therefore, the introduction of air du...

This manuscript investigates the effect of atmospheric transport and trade on air pollution mortality in China. The topic is interesting and important. The approach is new and robust. The paper presents a good interdisciplinary study and is written. A few minor correction may need to be made. 1. Abstract: “33% of China’s air pollution deaths. . .”, it is suggested to provide the number of prema...

In this paper, A power factor correction (PFC) based single ended primary inductor converter (SEPIC) is used to regulate DC bus voltage of voltage source inverter (VSI) to run PMBLDC motor . Permanent magnet brushless DC motor (PMBLDCM) is used in air-conditioning systems and runs at rated torque and variable speed to achieve energy conservation. The analysis, design and performance of the prop...