DEFINITION OF A TEST-BED FOR EVALUATION OF HOUSE MECHANICAL VENTILATION SYSTEMS

2012 ◽  
Vol 45 ◽  
pp. S2
Author(s):  
Luana Souto ◽  
Pedro Talaia ◽  
Antonio Ramos ◽  
Pedro Martins ◽  
Nuno Silva ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Test Bed ◽  
Definition Of ◽  
Ventilation Systems

Ozonolysis of monoterpenes in mechanical ventilation systems

2005 ◽  
Vol 39 (34) ◽  
pp. 6315-6325 ◽  
Author(s):  
Jerker Fick ◽  
Linda Pommer ◽  
Anders Åstrand ◽  
Ronny Östin ◽  
Calle Nilsson ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Ventilation Systems

The Muscle Myogram as a Control Signal for Use in Powered Limb Orthosis

2006 ◽  
Author(s):  
M. Antonelli ◽  
P. Beomonte Zobel ◽  
J. Giacomin
Keyword(s):  
Lower Limb ◽  
Assistive Device ◽  
Sitting Position ◽  
Test Bed ◽  
Disabled People ◽  
Test Protocol ◽  
Prosthetic Devices ◽  
Specific Device ◽  
Definition Of

The choice of the command technique to be used in orthotic and prosthetic devices is very critical for the acceptance and, finally, the success of the specific device. Many variables influence this choice: the general characteristics of the signal, the quality of the correlation between signal and specific actions of the user and the algorithm that is derived, the acceptance of the technique, as applied to the specific device, from the user, etc. Among the command techniques, MMG signal seems to be promising to command an assistive device. In this paper a test protocol for studying MMG signal, to investigate the prospective for its use as a command technique of a powered lower limb orthosis capable of raising elderly and disabled people from the sitting position, is proposed. The definition of the test protocol, including the description of the test bed and the sensors application, is presented. Finally, the experimental results are showed and discussed.

scholarly journals The Impact of Prolonged Mechanical Ventilation on Overall Survival in Patients With Surgically Treated Brain Metastases

2021 ◽  
Vol 11 ◽  
Author(s):  
Patrick Schuss ◽  
Niklas Schäfer ◽  
Christian Bode ◽  
Valeri Borger ◽  
Lars Eichhorn ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Overall Survival ◽  
Surgical Treatment ◽  
Brain Metastases ◽  
Prolonged Mechanical Ventilation ◽  
Postoperative Phase ◽  
Significant Prognostic Factor ◽  
Cancer Disease ◽  
Definition Of ◽  
The Impact

ObjectiveSurgical resection represents a common treatment modality in patients with brain metastasis (BM). Postoperative prolonged mechanical ventilation (PMV) might have an enormous impact on the overall survival (OS) of these patients suffering from advanced cancer disease. We therefore have analyzed our institutional database with regard to a potential impact of PMV on OS of patients who had undergone surgery for brain metastases.Methods360 patients with surgically treated brain metastases were included. The definition of PMV consisted of postoperative mechanical ventilation lasting for more than 48 hours. Analysis of survival incorporating established prognostic factors such as age, location of BM, and preoperative physical status was performed.Results14 of 360 patients with BM (4%) suffered from postoperative PMV after surgical treatment of BM. Patients with PMV presented in a significantly more impaired neurological condition preoperatively than patients without (p<0.0001). Multivariate analysis determined PMV to be a significant prognostic factor for OS after surgical treatment in patients with BM, independent of other predictive factors (p<0.0001).ConclusionsThe present study demonstrates postoperative PMV as significantly related to poor OS in patients with surgically treated BM. Postoperative PMV is a so far underestimated prognostic predictor, but might be utilized for optimized patient management early in the postoperative phase. For this purpose, the results of the present study should encourage the initiation of further scientific efforts.

scholarly journals Feedback Linearization Control of the Inertia Wheel Pendulum

2014 ◽  
Vol 14 (3) ◽  
pp. 96-109 ◽  
Author(s):  
Faculty of Automatics, Technical Un Enev
Keyword(s):  
Feedback Linearization ◽  
Wheel Speed ◽  
Control Law ◽  
Test Bed ◽  
Control Laws ◽  
Full State ◽  
Feedback Linearization Control ◽  
System Output ◽  
Inertia Wheel Pendulum ◽  
Definition Of

Abstract In this paper, two feedback linearizing control laws for the stabilization of the Inertia Wheel Pendulum are derived: a full-state linearizing controller, generalizing the existing results in literature, with friction ignored in the description and an inputoutput linearizing control law, based on a physically motivated definition of the system output. Experiments are carried out on a laboratory test bed with significant friction in order to test and verify the suggested performance and the results are presented and discussed. The main point to be made as a consequence of the experimental evaluation is the fact that actually the asymptotic stabilization was not achieved, but rather a limit cycling behavior was observed for the full-state linearizing controller. The input-output linearizing controller was able to drive the pendulum to the origin, with the wheel speed settling at a finite value

scholarly journals Self-contained ventilation system of civil buildings built into window structures

2018 ◽  
Vol 196 ◽  
pp. 02007
Author(s):  
Arman Kostuganov ◽  
Yuri Vytchikov ◽  
Andrey Prilepskiy
Keyword(s):  
Mechanical Ventilation ◽  
Thermal Protection ◽  
Ventilation System ◽  
Field Tests ◽  
Building Construction ◽  
Labor Input ◽  
Building Envelopes ◽  
Extra Space ◽  
Research Stage ◽  
Ventilation Systems

The article describes development and application of self-contained ventilation systems in civil buildings. It suggests several models of air exchange within the building, compares these models and points out the variant of ventilating with self-contained mechanical systems with utilization of heat. The researchers conclude that structurally self-contained systems of mechanical ventilation with utilization of heat are most efficiently built into window constructions. This installation variant makes it possible to keep the interior, avoid building construction strengthening, shorten time and labor input of construction-assembling works, allow rational use of the vertical building envelopes area without extra space using. The paper key issue is the development of constructive solutions of self-contained ventilation systems main elements to ensure the possibility of their use in window structures. This research stage was developed with account of previous results of field tests and of such ventilation systems theoretical descriptions. The authors assess limit dimensions of the systems suitable for installment into window constructions of civil buildings in the view of modern Russian requirements to thermal protection. The research suggests a general constructive solution of such a ventilation system and a heat exchanger model which can be used as an air heat utilizer in these systems.

Respiratory Failure and Mechanical Ventilation

2017 ◽  
Author(s):  
Jan Hau Lee ◽  
Ira M. Cheifetz
Keyword(s):  
Mechanical Ventilation ◽  
Respiratory Failure ◽  
Airway Pressure ◽  
Positive Airway Pressure ◽  
Invasive Mechanical Ventilation ◽  
Plateau Pressure ◽  
Consensus Definition ◽  
Essential Information ◽  
Bilevel Positive Airway Pressure ◽  
Definition Of

This chapter on respiratory failure and mechanical ventilation provides essential information about how to support children with severe respiratory disorders. The authors discuss multiple modes of respiratory support, including high-flow nasal cannula oxygen, noninvasive ventilation with continuous positive airway pressure and bilevel positive airway pressure, as well as conventional, high-frequency, and alternative modes of invasive ventilation. The section on invasive mechanical ventilation includes key information regarding gas exchange goals, modes of ventilation, patient–ventilator interactions, ventilator parameters (including tidal volume, end-expiratory pressure, and peak plateau pressure), extubation readiness testing, and troubleshooting. The authors also provide the new consensus definition of pediatric acute respiratory distress syndrome. Also included are multiple figures and indispensable information on adjunctive therapies (inhaled nitric oxide, surfactant, prone positioning, and corticosteroids) and respiratory monitoring (including capnography and airway graphics analysis).

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