405 research outputs found
Cytogenetic evidences on the evolutionary relationships between the tetraploids of the section Rhizomatosae and related diploid species (Arachis, Leguminosae).
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Previous issue date: 2017-07-27bitstream/item/181202/1/Ortiz2017-Article-CytogeneticEvidencesOnTheEvolu.pd
Preliminary Experience With the Use of Electromagnetic Navigation for the Diagnosis of Peripheral Pulmonary Nodules and Enlarged Mediastinal Lymph Nodes
Electromagnetic navigation is a new technique that can be
used with bronchoscopy to obtain samples of small peripheral
nodular lesions and enlarged mediastinal lymph nodes. It is
very versatile in that it enables both transbronchial biopsies
and fine-needle aspiration to be performed. We describe
2 cases in which navigation with the superDimension/
Bronchus system combined with traditional diagnostic
techniques facilitated a definitive diagnosis by bronchoscopy.
Electromagnetic navigation can obviate the need for more
invasive diagnostic procedures such as surgery, thus saving
time and money and avoiding complications
Sida cabreriana Krapov.
Ruta prov. 56. Cuesta de las Lajitas, 12 a 14 km SW de La Mendieta.publishedVersio
5f--5f transitions of U4+ ions in high-field, octahedral fluoride coordination: the Cs2GeF6:U4+ crystal
Yb2+-doped SrCl2: electronic structure of impurity states and impurity-trapped excitons
The 5f2--5f16d1 absorption spectrum of Cs2GeF6:U4+ crystals: a quantum chemical and experimental study
Theoretical study of the effects of F to Cl chemical substitution on the electronic structure and the luminescence properties of Cs2GeF6:Os4+ and Cs2ZrCl6:Os4+ materials
Hyperleptinaemia, respiratory drive and hypercapnic response in obese patients
Leptin is a powerful stimulant of ventilation in rodents. In humans, resistance
to leptin has been consistently associated with obesity. Raised leptin levels
have been reported in subjects with sleep apnoea or obesity-hypoventilation
syndrome. The aim of the present study was to assess, by multivariate analysis,
the possible association between respiratory centre impairment and levels of
serum leptin. In total, 364 obese subjects (body mass index >or=30 kg.m(-2))
underwent the following tests: sleep studies, respiratory function tests,
baseline and hypercapnic response (mouth occlusion pressure (P(0.1)), minute
ventilation), fasting leptin levels, body composition and anthropometric
measures. Subjects with airways obstruction on spirometry were excluded. Out of
the 346 subjects undergoing testing, 245 were included in the current analysis.
Lung volumes, age, log leptin levels, end-tidal carbon dioxide tension,
percentage body fat and minimal nocturnal saturation were predictors for baseline
P(0.1). The hypercapnic response test was performed by 186 subjects; log leptin
levels were predictors for hypercapnic response in males, but not in females.
Hyperleptinaemia is associated with a reduction in respiratory drive and
hypercapnic response, irrespective of the amount of body fat. These data suggest
the extension of leptin resistance to the respiratory centre
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