19 research outputs found

    Supplementary information file for article: 'Electrocatalytic oxidation of ethanol and ethylene glycol on cubic, octahedral and rhombic dodecahedral palladium nanocrystals'

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    Supplementary information file for article: 'Electrocatalytic oxidation of ethanol and ethylene glycol on cubic, octahedral and rhombic dodecahedral palladium nanocrystals'.Abstract: Cubic, octahedral and rhombic dodecahedral Pd nanocrystals were synthesized and examined as nanocatalysts for electro-oxidation of ethanol and ethylene glycol. Combined electrochemical measurements and density functional theory calculations reveal that nanofacet-dependent affinity and reactivity of OHads and COads are closely linked to the C2 alcohol oxidation activities, with the highest reactivity found on the Pd nanocubes bounded by {100} facets.</div

    Ventilation/perfusion scintigraphy in children with post-infectious bronchiolitis obliterans: a pilot study.

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    PURPOSE: Childhood post-infectious bronchiolitis obliterans (BO) is an infrequent lung disease leading to narrowing and/or complete obliteration of small airways. Ventilation and perfusion (V/Q) scan can provide both regional and global pulmonary information. However, only few retrospective researches investigating post-infectious BO involved V/Q scan, the clinical value of this method is unknown. This preliminary prospective study was aimed to evaluate the correlation of V/Q scan with disease severity, pulmonary function test results, and prognosis in children with post-infectious BO. METHODS: Twenty-five post-infectious BO children (18 boys and 7 girls; mean age, 41 months) underwent V/Q scan and pulmonary function tests. Patients were followed after their inclusion. Ventilation index and perfusion index obtained from V/Q scan were used to measure pulmonary abnormalities. Spearman's rank correlation test of ventilation index and perfusion index on disease severity, lung function tests indices, and follow-up results were performed. RESULTS: The median follow-up period was 4.6 years (range, 2.2 to 5.0 years). Ventilation index and perfusion index were both correlated with disease severity (r = 0.72, p<0.01 and r = 0.73, p<0.01), but only ventilation index was related to pulmonary function tests results (all p<0.05). In addition, Spearman test yielded significant correlations between perfusion index and prognosis (r = 0.77, p<0.01), and ventilation index and prognosis (r = 0.63, p = 0.01). CONCLUSIONS: For children with post-infectious BO, the present study preliminarily indicated that the degree of ventilation and perfusion abnormalities evaluated by V/Q scan may be used to assess disease severity, and may be predictive of patient's outcome

    Clinical characteristics and imaging results of patients (n = 25).

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    <p>All patients had persistent cough and wheezing, so these manifestations were not listed in the symptoms column. All patients showed mosaic pattern and air trapping by HRCT, so these imaging findings were not listed in the HRCT column. BWT =  bronchial wall thickening; Be =  Bronchiectasis</p

    Fiberoptic bronchoscopy of the same patient shown in Figure 1.

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    <p>Complete obstructions were observed in the subsegmental anterior basal bronchus of the left lower lobe (A) and in the subsegmental lateral bronchus of the right middle lobe (B).</p

    Three patterns of V/Q scan (A. mismatched ventilation; B. mismatched perfusion; C. matched ventilation-perfusion) in post-infectious BO children (patient No. 4, patient No. 21 and patient No. 12), displayed in 8 views.

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    <p>POS =  posterior, RPO =  right posterior oblique, RL =  right lateral, RAO =  right anterior oblique, ANT =  anterior, LAO =  left anterior oblique, LL =  left lateral, LPO =  left posterior oblique.</p

    Disease severity evaluation method.

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    <p>Patient's disease severity was defined as none (summed score  = 0), mild (summed score ranged from 1 to 3), moderate (summed score ranged from 4 to 7), and severe (summed score ranged from 8 to 12).</p
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