Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Dead space"”.
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Re-animating dead space: the dislocation and relocation of affordances in interdisciplinary performance environments
… approach that encompasses the environment: the space, its furnishings, and people. The project's roots are a belief that each individual present is involved in an event's conception, delivery, and documentation, making the environment, thus event, constantly evolving and fluid. The thesis and …
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Gas exchange with a reflecting system for inhalational anaesthesia
… this group. In paper II CO2 exchange and airway dead space is compared using an HME, ACD without reflecting filter and ACD with reflecting filter in a laboratory set-up. It is shown that the ACD binds CO2 resulting in a dead space effect 180 ml in excess of its internal volume. This is due to …
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Influence of tidal volume on pulmonary gas exchange during general anaesthesia
… pressure 0.04 cm H2O kg-1. Extra apparatus dead space was added to maintain PETCO2 at 4.5 kPa. Arterial oxygenation, sevoflurane tension (Pasevo, Fisevo, PETsevo), PaCO2, PETCO2, stroke volume, cardiac output, VT and airway pressure were measured. Results: The groups of patients compared …
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Continuous High-Pressure Negative Suction Drain: New Powerful Tool for Closed Wound Management: Clinical Experience
… incidence of other typical wound complications. Dead space was evaluated postoperatively with ultrasonography. Results: Using continuous high-pressure negative suction drain, successful management of seroma was obtained without any major complication such as wound infection, flap loss, and wound …
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Linear Mode CMOS Compatible p-n Junction Avalanche Photodiode for Smart-lighting Applications
… capability to enable adaptive lighting (smart spaces) and visible light communication. One approach to address this need is to design and manufacture a novel complementary-metal—oxide—semiconductor (CMOS) compatible, cost-effective detector array and readout circuit (ROIC) that incorporates …
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VALIDATION OF IMPROVED HARDWARE AND SOFTWARE FOR EXPIRED GAS ANALYSIS INDIRECT CALORIMETRY
… (p < 0.01). The mean individual computed dead space volumes were 2.5 ± 0.13 L. The results suggested that the new 2 L mixing bag is capable of accurately reproducing specific gas fractions from reference calibration gas. The new 2 L mixing bag allowed expired air to wash out through the …
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Middle infrared beam-steering using liquid crystals for spatial light modulation
… size and shape, illumination, pixelation, dead-space and fringing effects, on the performance of a spatial light modulator were investigated. Liquid crystal on silicon implementation was simulated. For $ \lambda= 2.3 \mu$m an efficiency $ > 10 \% $ was attained for angles up to $ 7^{\circ} …
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Comparison of Two Aerosolized Bronchodilators in the Treatment of Severe Equine Chronic Obstructive Pulmonary Disease
… Physiologic shunt fraction (QS/QT), alveolar dead space fraction (VD/VT) and alveolar to arterial oxygen tension difference (p(A-a)O₂) were calculated using standard formulas. At time zero, horses demonstrated severe respiratory compromise and marked alterations in pulmonary gas exchange, …
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Evaluation of clinical methods of pulmonary gas exchange assessment in the standing horse
… a facemask. Alveolar O, tension, alveolar dead space fraction (V<sub>DB</sub>/V<sub>T</sub>), and physiologic shunt fraction (Q<sub>S</sub>/Q<sub>T</sub>) were calculated using standard formulas. Horses with both mild and severe signs of lower respiratory disease had significant (p<0.05) …
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Operation of a Tubular Anaerobic Digested on Piggery Waste
… throughout the digester (which contains minimal dead space) in 25% of the HRT or less. Solids move in well dispersed plug flow and are retained longer than in completely mixed digesters with a consequent improvement in gas yields. Solids retention is affected by the size of the digester exit and …
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Engineering analysis of a Chinese-type anaerobic digester
… could be improved, leading to reductions in dead space and bypassing volumes by 47% and 91%, respectively. Digesters operated at HRT's of 10, 15, and 20 days performed normally. In these units, for a given S₀, as the HRT was increased the volumetric methane production decreased while the unit …
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Re-thinking the possibility of the urban roof space
… design principles are applied to roof spaces, these can be activated for specific purposes. The space on top of roofs has the potential to be converted into areas for production, recreation , socializing and even for healing. Today, in the urban context it is difficult to find spare …
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EFFECTS OF ARTIFICIALLY - INDUCED INTRINSIC POSITIVE END - EXPIRATORY PRESSURE IN MECHANICALLY VENTILATED PATIENTS WITH ACUTE RESPIRATORY FAILURE.
… mechanics, cardiac output, physiological dead space (DSphys) and the slope of capnographic phase III, ventral and dorsal ventilated surface, and global inhomogeneity index (GI), an index of spatial heterogeneity of ventilation distribution. A similar PEEPtot of ~7 cmH2O was obtained at …
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The Soft Tissues in Osteoarthritis and Arthroplasty of the Hip
… soft tissue repair reduces postoperative “dead space can be debated. The role of synovitis and increased intracapsular hydrostatic pressure in the loosening process after THA has gained increased attention. Unrevised, radiographically stable hips that had THA because of osteoarthritis 10 …
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Communication-Theoretic Foundations for Optical Receivers Using Dynamically Biased Avalanche Photodiodes
<p>To meet the demands of the exponential growth in video, voice, data and mobile device traffic over the internet, the telecommunication industry has been moving toward higher speed protocols such as 40-Gb/s and 100-Gb/s. Operations at such high speeds require detectors with optimized internal …