Search results for " vol"
showing 10 items of 3179 documents
Sleep Disturbances in COPD are Associated with Heterogeneity of Airway Obstruction
2018
Individuals with Chronic Obstructive Pulmonary Disease (COPD) experience sleep disturbances due to the impact of respiratory symptoms on sleep quality. We explored whether sleep disturbances in COPD are linked to heterogeneity of airway constriction.The impact of breathing problems on sleep quality was measured in consecutive COPD outpatients with the COPD and Asthma Sleep Impact Scale (CASIS) questionnaire. Impulse oscillometry technique (IOS) was employed to assess heterogeneity of airway constriction. Subjects with a previous or concomitant diagnosis of asthma or obstructive sleep apnea (OSA) were excluded.Fifty COPD subjects (M/F 40/10; age: 71 +/- 8 yrs, Body Mass Index (BMI): 26.2 +/-…
PQ and Harmonic Assessment Issues on Low-Cost Smart Metering Platforms: A Case Study
2020
This paper presents a feasibility study on how to implement power quality (PQ) metrics in a low-cost smart metering platform. The study is aimed at verifying the possibility of implementing PQ monitoring in distribution networks without replacing existing smart metering devices or adding new modules for PQ measurements, thus zeroing the installation costs. To this aim, an electronic board, currently used for remote energy metering, was chosen as a case study, specifically the STCOMET platform. Starting from the specifications of this device, the possibility of implementing power quality metrics is investigated in order to verify if compliance with standard requirements for PQ instruments ca…
Compost Amendment Impact on Soil Physical Quality Estimated from Hysteretic Water Retention Curve
2022
Capacity-based indicators of soil physical quality (SPQ) and pore distribution parameters were proposed to assess the effects of compost amendment but their determination was limited to desorption water retention experiments. This study also considered the pore size distribution obtained from adsorption experiments to establish the effectiveness of compost amendment in modifying the physical and hydrological attributes of a sandy loam soil. Repacked soil samples with different compost to soil ratios, r, were subjected to a wetting–drying cycle, and the water retention data were fit to the van Genuchten model to obtain the pore volume distribution functions. The soil bulk density was m…
Adattamento cardiaco al sovraccarico di volume
2014
The Industrial Applicability of PEA Space Charge Measurements, for Performance Optimization of HVDC Power Cables
2019
Cable manufacturing industries are constantly trying to improve the electrical performance of power cables. During the years, it was found that one of the most relevant degradation factors influencing the cable lifetime is the presence of space charge in the insulation layer. To detect the accumulated charge, the pulsed electro-acoustic (PEA) method is the most used technique. Despite the wide use of the PEA cell, several issues are still present. In particular, the PEA output signal is strongly disturbed by the acoustic waves reflections within the PEA cell. This causes the distortion of the output signal and therefore the misinterpretation of the charge profiles. This, in turn, may result…
THE EXPLORED ARCHITECTURE. THE VIRTUAL MODEL OF A HISTORICAL STRATIFICATION
2010
The present study deepens -through documents of historical iconography and critical studies on morphological, geometrical and structural aspects- spatial and volumetric relationships between the medieval Torre Pisana of Palazzo Reale to Palermo (also known as Palazzo dei Normanni) and the Astronomical Observatory, site on the summit of the tower. A brief historical and architectural description of the evolution of the tightly correlated structure to the historical-cultural vicissitudes, to the advancement of the scientific theories and to the innovation of the tools of observation and of survey, is a deepening of knowledge for the conservation and safeguard of the architectural testimony. T…
Mercury concentration and speciation in volcanic aquifers: measurements in Italy and Guadeloupe (Lesser Antilles)
2008
Absence of Adverse Effects of Tiotropium/Olodaterol Compared with the Monocomponents on Long-Term Heart Rate and Blood Pressure in Patients with Mode…
2020
Stefan Andreas,1,2 Lorcan McGarvey,3 Ulrich Bothner,4 Matthias Trampisch,4 Alberto de la Hoz,4 Matjaz Fležar,5 Roland Buhl,6 Peter Alter7 1Department of Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany; 2LungClinic Immenhausen, Immenhausen, Germany, Member of the German Center for Lung Research (DZL); 3Queen’s University Belfast, Belfast, UK; 4Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany; 5Klinika Golnik, Golnik, Slovenia; 6Pulmonary Department, Johannes Gutenberg University Mainz, Mainz, Germany; 7Department of Medicine, Pulmonary and Critical Care Medicine, Philipps University of Marburg (UMR); Member o…
progetto "New city council offices, 2005-2007," Castelvetrano (TP), in Aa. Vv., People meet in Architecture
2010
Progetto vincitore di una concorso realizzato in un terreno confiscato alla mafia. I nuovi uffici municipali di Castelvetrano si contraddistinguono per la sapiente articolazione compositiva sia dell’impianto planimetrico sia della stereometria della fabbrica. I grandi scavi operati sul volume, le sregolature delle bucature sconnesse del fronte laterale, il ritmo irregolare dei pieni e dei vuoti, sono elementi di una interessante complessità, che trova una sintesi indubbiamente significativa nell’essenzialità del volume che le accoglie
Nuova sede degli uffici comunali Castelvetrano (Trapani), in Aa. Vv., Ailati. Riflessi dal futuro, a cura di Luca Molinari, testo di Michele Calzavara
2010
Progetto vincitore di una concorso realizzato in un terreno confiscato alla mafia. I nuovi uffici municipali di Castelvetrano si contraddistinguono per la sapiente articolazione compositiva sia dell’impianto planimetrico sia della stereometria della fabbrica. I grandi scavi operati sul volume, le sregolature delle bucature sconnesse del fronte laterale, il ritmo irregolare dei pieni e dei vuoti, sono elementi di una interessante complessità, che trova una sintesi indubbiamente significativa nell’essenzialità del volume che le accoglie.