Fast-ion transport caused by the combination of MHD and a mock-up test-blanket module (TBM) coil is measured in the DIII-D tokamak. The primary diagnostic is an infrared camera that measures the heat ...flux on the tiles surrounding the coil. The combined effects of the TBM and four other potential sources of transport are studied: neoclassical tearing modes, Alfén eigenmodes, sawteeth, and applied resonant magnetic perturbation fields for the control of edge localized modes. A definitive synergistic effect is observed at sawtooth crashes where, in the presence of the TBM, the localized heat flux at a burst increases from to MW m−2.
Electronic health records (EHRs) must support primary care clinicians and patients, yet many clinicians remain dissatisfied with their system. This article presents a consensus statement about gaps ...in current EHR functionality and needed enhancements to support primary care. The Institute of Medicine primary care attributes were used to define needs and meaningful use (MU) objectives to define EHR functionality. Current objectives remain focused on disease rather than the whole person, ignoring factors such as personal risks, behaviors, family structure, and occupational and environmental influences. Primary care needs EHRs to move beyond documentation to interpreting and tracking information over time, as well as patient-partnering activities, support for team-based care, population-management tools that deliver care, and reduced documentation burden. While stage 3 MU's focus on outcomes is laudable, enhanced functionality is still needed, including EHR modifications, expanded use of patient portals, seamless integration with external applications, and advancement of national infrastructure and policies.
Diverted discharges at negative triangularity on the DIII-D tokamak sustain normalized confinement and pressure levels typical of standard H-mode scenarios (H98y,2≅1, βN≅3) without developing an edge ...pressure pedestal, despite the auxiliary power far exceeding the L → H power threshold expected from conventional scaling laws. The power degradation of confinement is substantially weaker than the ITER-89P scaling, resulting in a confinement factor that improves with increasing auxiliary power. Furthermore, the absence of the edge pedestal is beneficial in several aspects, such as eliminating the need for active mitigation or suppression of edge localized modes, low impurity retention and a reconstructed scrape-off layer heat flux width at the mid-plane that exceeds the ITPA multi-machine scaling law by up to 50%. Together with technological advantages granted by placing the divertor at larger radii, plasmas at Negative Triangularity without an edge pedestal feature both core confinement and power handling characteristics that are potentially suitable for operation in future fusion reactors.
Polyphase continuous waveform radar systems often use polyphase P4 modulation because of the periodic autocorrelation zero sidelobes and good Doppler tolerance. To extend the unambiguous detection ...range beyond a single-code period, this study develops a novel relationship between the polyphase P4 code and the robust symmetrical number system (RSNS) where the P4 phase values within the code period match the symmetrical residues within an RSNS sequence. By transmitting N greater than or equal to 2 coprime P4 code periods, the unambiguous range is extended by considering the paired values from each sequence. With this new approach, the unambiguous range is extended to the greatest length of combined coprime phase sequences that contain no repeated paired terms. The flexibility of the RSNS allows the unambiguous range to be extended, using a fewer number of subcodes within each code period. The combined phase sequences also have an inherent integer Gray code property to control range detection errors.
In patients with persistent atrial fibrillation, amiodarone and sotalol were equally efficacious for conversion of the arrhythmia to sinus rhythm. However, amiodarone was clearly superior to sotalol ...for maintenance of sinus rhythm. The results establish amiodarone as the drug of choice for the management of atrial fibrillation.
Amiodarone and sotalol were equally efficacious for conversion of the arrhythmia to sinus rhythm. However, amiodarone was clearly superior to sotalol for maintenance of sinus rhythm.
Atrial fibrillation is the most common arrhythmia requiring continuous therapy.
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Conversion to and maintenance of sinus rhythm remain the cornerstones of therapy, but the optimal long-term drug strategy is controversial. Unblinded trials found that rhythm control did not offer a survival advantage over rate control with anticoagulation,
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but they did not compare standardized drug regimens for maintaining sinus rhythm or regularly monitor for atrial fibrillation. Thus, if the best approach to maintaining sinus rhythm had been used, the outcomes might have differed.
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The double-blind Sotalol Amiodarone Atrial Fibrillation Efficacy Trial (SAFE-T) compared the ability of sotalol and amiodarone . . .
Context. Given the rarity of young O star candidates, compact HII regions embedded in dense molecular cores continue to serve as potential sites for peering into the details of high-mass star ...formation. Aims. We uncover the ionizing sources of the most luminous and compact HII regions embedded in the RCW106 and RCW122 giant molecular clouds, known to be relatively nearby (2−4 kpc) and isolated, thus providing an opportunity to examine spatial scales of a few hundred to a thousand AU in size. Methods. High spatial resolution (0.3′′), mid-infrared spectra (R = 350), including the fine structure lines ArIII and NeII, were obtained for four luminous compact HII regions embedded inside the dense cores within the RCW106 and RCW122 molecular cloud complexes. At this resolution, these targets reveal point-like sources surrounded by the nebulosity of different morphologies, thereby uncovering details at spatial dimensions of <1000 AU. The point-like sources display ArIII and NeII lines – the ratios of which are used to estimate the effective temperature of the embedded sources. Results. The derived temperatures are indicative of mid-late O type objects for all the sources with ArIII emission. Previously known characteristics of these targets from the literature, including evidence of disk or accretion, suggest that the identified sources may grow more to become early-type O stars by the end of the star formation process.
Measurements of a magnetized plasma with a controlled electron temperature gradient show the development of a broadband spectrum of density and temperature fluctuations having an exponential ...frequency dependence at frequencies below the ion cyclotron frequency. The origin of the exponential frequency behavior is traced to temporal pulses of Lorentzian shape. Similar exponential frequency spectra are also found in limiter-edge plasma turbulence associated with blob transport. This finding suggests a universal feature of magnetized plasma turbulence leading to nondiffusive, cross-field transport, namely, the presence of Lorentzian shaped pulses.
We report the first experimental observations of fast-ion loss in a tokamak due to energetic particle driven geodesic acoustic modes (EGAMs). A fast-ion loss detector installed on the DIII-D tokamak ...observes bursts of beam ion losses coherent with the EGAM frequency. The EGAM activity results in a significant loss of beam ions, comparable to the first orbit losses. The pitch angles and energies of the measured fast-ion losses agree with predictions from a full orbit simulation code SPIRAL, which includes scattering and slowing-down.
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