Phase slip scaling relationship for the 59 K and 143 K charge-density-waves in NbSe3

Selective area irradiation was used to create irradiated/unmodifïed/irradiated CDW heterostructures with well-defined interfaces on a single NbSe3 crystal. The temperature dependence of the extra voltage required for carrier conversion (phase slip voltage, Vps0) is extracted from length dependent studies. We find that the temperature dependence of Vps0 for the 143 K and 59 K CDW transitions are identical if properly scaled by the transition temperature. The Vps0 temperature dependence is not thermally activated, but contains an upper and lower temperature branch. The crossover temperature for the two branches is 0.75TP. For the 59 K CDW we observe a zero-bias resistance anomaly near a single irradiated/unmodified interface. This anomaly abruptly changes with temperature near 44 K suggesting a qualitative change in the phase slip mechanism near 0.75TP

Quality of radiotherapy reporting in randomized controlled trials of Hodgkin\u27s lymphoma and non-Hodgkin\u27s lymphoma: in regard to Bekelman and Yahalom (Int J Radiat Oncol Biol Phys 2009;73:492-498)

Comment on Quality of radiotherapy reporting in randomized controlled trials of Hodgkin\u27s lymphoma and non-Hodgkin\u27s lymphoma: a systematic review. [Int J Radiat Oncol Biol Phys. 2009

Memory and Executive Screening (MES): a brief cognitive test for detecting mild cognitive impairment

<p>Abstract</p> <p>Background</p> <p>Mild cognitive impairment (MCI), defined as a transitional zone between normal cognition and dementia, requires a battery of formal neuropsychological tests administered by a trained rater for its diagnosis. The objective of this study was to develop a screening tool for MCI.</p> <p>Methods</p> <p>One hundred ninety seven cognitively normal controls (NC), one hundred sixteen patients with amnestic MCI –single domain (aMCI-sd), one hundred ninety five patients with amnestic MCI-multiple domain (aMCI-md), and two hundred twenty eight patients with mild Alzheimer’s disease (AD) were evaluated by comprehensive neuropsychological tests and by the Memory and Executive Screening (MES).</p> <p>Results</p> <p>Correlation analysis showed that the three indicators of the MES were significantly negatively related with age (P<0.05), yet not related with education (P>0.05). There was no ceiling or floor effect. Test completion averaged seven minutes (421.14±168.31 seconds). The receiver operating characteristics (ROC) analyses performed on the aMCI-sd group yielded 0.89 for the area under the curve (AUC) (95% CI, 0.85–0.92) for the MES-total score, with sensitivity of 0.795 and specificity of 0.828. There was 81% correct classification rate when the cut-off was set at less than 75. Meanwhile, the aMCI-md group yielded 0.95 for the AUC (95% CI, 0.93–0.97) for the MES-total score, with sensitivity of 0.87 and specificity of 0.91, and 90% correct classification rate when the cut-off was set at less than 72.</p> <p>Conclusion</p> <p>The MES, minimally time-consuming, may be a valid and easily administered cognitive screening tool with high sensitivity and specificity for aMCI, with single or multiple domain impairment.</p