In this paper we present a design procedure for disturbance attenuation with internal stability of a rotor supported by mag netic bearings over the whole interval of the rotor operating speeds The nonlinear gyroscopic equations can be simpli ed to a set of linear time varying di erential equations owing to the linear dependence of the rotor speed in the plant dynam ics For rotors operating in h...

Localised depressions in the magnetic field magnitude, or magnetic holes, are common features in many regions of solar system plasma. Two distinct mechanisms for their generation have been proposed. The first proposed that the structures are generated locally, close to the point of observation. The alternative has been proposed by Russell et al. (2008), who suggest that the observed magnetic ho...

The incidence of diagnosed venous thromboembolism (VTE) has been increasing concurrent with advances in technology and medical care that enhance our ability to treat pediatric patients with critical illness or complex multiorgan system dysfunction. Although the overall incidence of VTE is estimated at 0.07-0.49 per 10,000 children, higher rates are observed in specific populations including hos...

Purpose of the study. To find out abilities multispiral computed tomography (MSCT) using intravenous bolus injection in detecting and preoperative esophago-gastric junction cancer staging order to improve diagnosis this pathological condition. Materials methods . The patients, diagnosed (n1 = 76), esophagus (n2 27) medically fit people’s (n3 30) findings investigating have been analyzed. All pa...

The Isokrmal Dendritic Growth Experiment (IDGE) is a NASA space flight experiment which flew as part of the United States Microgravity Payload (USMP-2), in early 1994. The IDGE measured dendritic growth rates, tip radii, and crystal morphologies of ultra-pure succinonitrile [CN-(CH,),-CN] at supercoolings in the range tiom 0.05 2.0 K. Data taken in the form of slow-scan binary digitized images ...

Top predators are often rare, subject to anthropogenic mortality, and possess life-history traits that make them inherently vulnerable to extinction. IUCN criteria recognise populations as Critically Endangered when abundance is <250 mature individuals, but estimating abundance of rare species can be more challenging than for common ones. Cost-effective methods are needed to provide robust abun...

We have adapted a method of amplifying and sequencing genomic DNA (1) for rapidly identifying and partially sequencing genes or transcripts from members of a multi-gene family in which one end is conserved and the other end is highly variable. By utilizing nested, conserved sequence primers in conjunction with primers specific for 6 bp restriction enzyme recognition sequences in a PCR, a family...

Bacterial conjugation normally involves the unidirectional transfer of DNA from donor to recipient. Occasionally, conjugation results in the transfer of DNA from recipient to donor, a phenomenon known as retrotransfer. Two distinct models have been generally considered for the mechanism of retrotransfer. In the two-way conduction model, no transfer of the conjugative plasmid is required. The es...

Web page loading speed continues to vex users, even as broadband adoption increases. Several studies have addressed delays in the context of Web sites as well as interactive corporate systems, and have recommended a wide range of “rules of thumb.” Some studies conclude that response times should be no greater than 2 seconds while other studies caution on delays of 12 seconds or more. One of the...