Circulatory system

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The circulatory system is an organ system that passes nutrients, gases, hormones, blood cells, etc. (Wikipedia.org)






Conferences related to Circulatory system

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2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power


2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 IEEE 58th Conference on Decision and Control (CDC)

The CDC is recognized as the premier scientific and engineering conference dedicated to the advancement of the theory and practice of systems and control. The CDC annually brings together an international community of researchers and practitioners in the field of automatic control to discuss new research results, perspectives on future developments, and innovative applications relevant to decision making, systems and control, and related areas.The 58th CDC will feature contributed and invited papers, as well as workshops and may include tutorial sessions.The IEEE CDC is hosted by the IEEE Control Systems Society (CSS) in cooperation with the Society for Industrial and Applied Mathematics (SIAM), the Institute for Operations Research and the Management Sciences (INFORMS), the Japanese Society for Instrument and Control Engineers (SICE), and the European Union Control Association (EUCA).


2019 IEEE International Conference on Systems, Man and Cybernetics (SMC)

2019 IEEE International Conference on Systems, Man, and Cybernetics (SMC2019) will be held in the south of Europe in Bari, one of the most beautiful and historical cities in Italy. The Bari region’s nickname is “Little California” for its nice weather and Bari's cuisine is one of Italian most traditional , based of local seafood and olive oil. SMC2019 is the flagship conference of the IEEE Systems, Man, and Cybernetics Society. It provides an international forum for researchers and practitioners to report up-to-the-minute innovations and developments, summarize state­of-the-art, and exchange ideas and advances in all aspects of systems science and engineering, human machine systems and cybernetics. Advances have importance in the creation of intelligent environments involving technologies interacting with humans to provide an enriching experience, and thereby improve quality of life.


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


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Periodicals related to Circulatory system

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Biomedical Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Control Systems Technology, IEEE Transactions on

Serves as a compendium for papers on the technological advances in control engineering and as an archival publication which will bridge the gap between theory and practice. Papers will highlight the latest knowledge, exploratory developments, and practical applications in all aspects of the technology needed to implement control systems from analysis and design through simulation and hardware.


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Engineering in Medicine and Biology Magazine, IEEE

Both general and technical articles on current technologies and methods used in biomedical and clinical engineering; societal implications of medical technologies; current news items; book reviews; patent descriptions; and correspondence. Special interest departments, students, law, clinical engineering, ethics, new products, society news, historical features and government.


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Most published Xplore authors for Circulatory system

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Xplore Articles related to Circulatory system

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Coupled simulation of human circulatory, thermoregulatory and renal systems

Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Cat. No.00CH37143), 2000

Presents a new lumped-parameter model-based simulation of coupled human circulatory, thermoregulatory and renal systems. The coupled analysis captures the dynamic interaction of these three human physiological systems even though simple models are used. These coupled dynamics have never been studied before, even though subsystem models have existed for some time. The simulation shows how the thermal excitation and body salt ...


Attempt to control an artificial heart system using sympathetic nervous signals

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286), 1998

Changes in skin sympathetic nerve activity (SSNA), which accelerates the constriction of peripheral blood vessels, were measured microneurographically from the median nerve of a subject, and were used for controlling the driving parameters of a pneumatically-driven artificial heart (AH) system. The number of SSNA pulses per second was calculated using a pulse counter, and the driving parameters (pulse rate, positive ...


Roles for autonomous physiologic agents; an oxygen supply and demand example

2007 Winter Simulation Conference, 2007

In the study of physiologic systems control, lumped parameter and differential equation techniques are standard approaches. Application of these techniques to the study of oxygen supply to tissues is discussed. It is then proposed that progress in dealing with heterogeneous physiologic systems is likely to proceed from the techniques of agent based modeling in the form of autonomous physiologic agents.


Continuous Simulation Language Model Of Intra-aortic Balloon Pumping

[1990] Proceedings of the Twelfth Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1990

None


Circulatory parameter extraction from digital plethysmogram. I. Waveform analysis of digital plethysmogram

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286), 1998

To develop a noninvasive circulatory parameter measuring method by analyzing waveforms of the digital plethysmograms (DPTG), we measured DPTG of subjects of widely ranging age and performed Fourier analysis. DPTG waveforms were well approximated by the sum of the first ten harmonics and well characterized by their frequency spectra.


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Educational Resources on Circulatory system

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IEEE.tv Videos

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IEEE-USA E-Books

  • Coupled simulation of human circulatory, thermoregulatory and renal systems

    Presents a new lumped-parameter model-based simulation of coupled human circulatory, thermoregulatory and renal systems. The coupled analysis captures the dynamic interaction of these three human physiological systems even though simple models are used. These coupled dynamics have never been studied before, even though subsystem models have existed for some time. The simulation shows how the thermal excitation and body salt and water intake influence the circulatory system. Each subsystem is modeled in the form of an ordinary differential equation. The individual models are appropriately simplified according to the simulation parameters after they have been assembled into a coupled system. The resulting coupled system equation is in the form of a differential algebraic equation (DAE), which is the standard model representation of the simulation environment we used. The simulation results agree with experiment or predictions based on physiological knowledge.

  • Attempt to control an artificial heart system using sympathetic nervous signals

    Changes in skin sympathetic nerve activity (SSNA), which accelerates the constriction of peripheral blood vessels, were measured microneurographically from the median nerve of a subject, and were used for controlling the driving parameters of a pneumatically-driven artificial heart (AH) system. The number of SSNA pulses per second was calculated using a pulse counter, and the driving parameters (pulse rate, positive pressure, and vacuum pressure) of the artificial heart system were altered in accordance with the algorithm for changes in the number of SSNA pulses by means of batch processing. After that, the driving parameters and the pump output of the AH system and the arterial pressure of the mock circulatory system which was connected with the AH pump were compared with the SSNA, digital arterial pressure, and skin blood flow of the subject. The increase/decrease in the number of SSNA pulses essentially matched the changes in digital blood pressure and skin blood flow; in such cases, it was possible to alter the AH pump output and the arterial pressure of the mock circulatory system similar to the change in the actual hemodynamic data of the subject. The authors are currently planning to utilize cardiac nerve activity instead of SSNA.

  • Roles for autonomous physiologic agents; an oxygen supply and demand example

    In the study of physiologic systems control, lumped parameter and differential equation techniques are standard approaches. Application of these techniques to the study of oxygen supply to tissues is discussed. It is then proposed that progress in dealing with heterogeneous physiologic systems is likely to proceed from the techniques of agent based modeling in the form of autonomous physiologic agents.

  • Continuous Simulation Language Model Of Intra-aortic Balloon Pumping

    None

  • Circulatory parameter extraction from digital plethysmogram. I. Waveform analysis of digital plethysmogram

    To develop a noninvasive circulatory parameter measuring method by analyzing waveforms of the digital plethysmograms (DPTG), we measured DPTG of subjects of widely ranging age and performed Fourier analysis. DPTG waveforms were well approximated by the sum of the first ten harmonics and well characterized by their frequency spectra.

  • Cardioresponsive Left Ventricular Assist Device

    A gradated cardioresponsive Left Ventricular Assist Device (LVAD) control algorithm was developed in order to improve cardiac reverse remodeling in patients who suffer from late to end-stage heart failure. This algorithm was created to improve physician control of the LVAD as well as improve awareness of the patient's condition. The control algorithm was validated using a mock circulatory system and simulated LVAD.

  • Simulation Study and Function Analysis of Micro-axial Blood Pumps

    During past decades, various micro-axial blood pumps were invented and have gained widespread acceptance as prospective devices as circulatory support of failing hearts. Studies concerned with the effects of the pumps can be divided into two categories: in vivo studies and simulation studies using mathematical model of the pumps and circulatory system. A new mathematical model of the micro-axial blood pumps is established, which can be applied to various micro- axial blood pumps. By inserting the pump model into the model of canine circulatory system according to clinic setting, the pump's effects can be investigated. In this paper, simulation studies of two types of micro-axial blood pumps, Hemopump and dynamic aortic valve (DAV), are made and the results verified that blood pumps decrease the workload of the heart by increasing pump flux, stroke volume, aortic pressure and decreasing left ventricular pressure and volume, left atrial pressure, the blood pumped by the left ventricle. With the increasing of rotation speed, the benefit effects are enhanced, however, too high rotation speed may cause left ventricular collapse. For Hemopump at above 24500 rpm left ventricular collapse is observed and for DAV it is not obtained below 9000 rpm. The simulation results are found in good agreement with the in vivo experimental results

  • Estimation of the respiratory activity from orthogonal ECG leads

    In the present work a method is proposed for the estimation of the respiratory signal from the three ECG orthogonal leads. The vectorcardiogram loop was evaluated in correspondence of each QRS complex (in a time window of 120 ms centred around the R wave). The centre of gravity and the inertial axes of each loop were calculated. A set of 12 parameters (3 spatial coordinates of the centre of gravity and 3 directions of the 3 inertial axes) was obtained for each cardiac beat. The first principal component of such a set of data was the estimation of the respiratory activity. The obtained signal was compared with the quantitative respiration recording and the cross-correlation index C was a measure of the goodness of the estimation. The mean value of C was 0.9 /spl plusmn/ 0.26, indicating a good matching between the recorded and the estimated signals.

  • An Analog Model For The Interaction Between Systemic And Coronary Circulation

    None

  • A numerical model of the circulatory system for heart assistance simulations: effect of a LVAD on energetic relationships inside the left ventricle

    A modular numerical model is used to study the interaction, in terms of energetic relationships, between the cardiovascular system and a pneumatic left ventricle assist device (LVAD). The experiments are performed in two steps: in the first the left ventricle is characterized, with an open loop model of the circulatory system, computing external work (EW), pressure volume area (PVA) and cardiac mechanical efficiency (CME) as a function of atrial pressure and peripheral resistance. PVA is compared to EW and CME surfaces respectively. In the second step the same variables are evaluated, with a closed loop model, assisting synchronously the left ventricle with the LVAD and changing two of its control parameters: driving pressure (DP) and systole- diastole (SD) ratio. The path of the working point is related to the value of the arterial elastance, modified by the LVAD, and only in few points the target to minimize PVA and EW and maximize CME is reached.<<ETX>>



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