Literatura académica sobre el tema "The Reservoir Optional Circuit"

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Artículos de revistas sobre el tema "The Reservoir Optional Circuit"

1

El-Essawi, A., I. Breitenbach, K. Ali, et al. "Minimized perfusion circuits: an alternative in the surgical treatment of Jehovah’s Witnesses." Perfusion 28, no. 1 (2012): 47–53. http://dx.doi.org/10.1177/0267659112457971.

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Objectives: Jehovah’s Witnesses present a challenge to cardiac surgeons, as quality of care is not only defined by mortality and morbidity, but also by the avoidance of blood transfusions. Over the last years, minimized perfusion circuits (MPC) have contributed substantially to the achievement of this goal in our clinic. Presented is a retrospective analysis of our experience. Methods: Twenty-nine Jehovah’s Witnesses, aged 69 ± 10 years, have undergone cardiac surgery with a MPC in our institution since 2005. The ROCsafe (Reservoir Optional Circuit) MPC was used in most of these patients (n=27) as it offers the unique possibility of a speedy integration of a reservoir in the event of a major air leak, thereby, negligating any safety concerns. Results: There was no in-hospital or 30-day postoperative mortality. Mean ICU stay was 1.6 ± 2 days with a mean intubation time of 11.3 ± 9.1 hrs. Postoperative complications included one myocardial infarction with accompanying low cardiac output, one stroke, one transient delirium, one idiopathic thrombocytopenia and three re-operations (one sternal infection, one postoperative bleeding and one delayed tamponade). The mean postoperative hospital stay was 9.9 ± 2.3 days. Mean decrease in hemoglobin was 2.1 ± 1.3 g/dl during cardiopulmonary bypass and 3.4 ±1.4 g/dl at discharge. The lowest postoperative hemoglobin level was 9.3 ±1.8 (Range 6-12.9). Conclusions: These encouraging results emphasize the role MPCs can play in optimizing the quality of patient care. We hope that this report can serve as a stimulus for similar experiences.
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2

Peter, Benjamin St, Rainer A. Dressler, Yu-hui Chiu, and Timothy Fedkiw. "Electrospray Propulsion Engineering Toolkit (ESPET)." Aerospace 7, no. 7 (2020): 91. http://dx.doi.org/10.3390/aerospace7070091.

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We report on the development of a software tool, the Electrospray Propulsion Engineering Toolkit (ESPET), that is currently being shared as a web application with the purpose to accelerate the development of electrospray thruster arrays for space propulsion. ESPET can be regarded as a database of microfluidic properties and electrohydrodynamic scaling models that are combined into a performance estimation tool. The multiscale model integrates experimental high-level physics characterization of microfluidic components in a full-scale electrospray propulsion (ESP) microfluidic network performance solution. ESPET takes an engineering model approach that breaks the ESP system down into multiple microfluidic components or domains that can be described by either analytical microfluidic or reduced order numerical solutions. ESPET can be divided into three parts: a central database of critical microfluidic properties, a microfluidic domain modeler, and a microfluidic network solver. Two options exist for the network solution, a detailed multi-domain solver and a QuickSolver designed for rapid design and testing of simple three-domain reservoir-feed-emitter arrays. The multi-domain network solver exploits the Hagen–Poiseuille/Ohm’s law analogy by using the publicly available SPICE (Simulation Program with Integrated Circuit Emphasis) electric circuit simulation software to solve the flow properties of the microfluidic network. Both the multi-domain and QuickSolver solutions offer Monte Carlo analysis of arrays based on user supplied tolerances on design parameters. Benchmarking demonstration examples are provided for experimental work in the literature, as well as recent experimental work conducted at Busek Co. The demonstration examples include ionic liquid propelled systems using active and passive capillary emitters, externally wetted emitter needles, and porous glass emitters, as well as a liquid metal system based on an externally wetted emitter needle.
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3

Okumura, Takahiro, Keisuke Matsuda, Yu Fukuoka, Junya Dai, and Naoko Shiraishi. "Development of a valve type semi-closed extracorporeal circulation system." Journal of Artificial Organs 24, no. 3 (2021): 320–26. http://dx.doi.org/10.1007/s10047-021-01249-5.

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AbstractIn Japan, perfusionists who work on other clinical tasks are involved in cardiopulmonary bypass. Moreover, the number of cases they can perform is limited. In view of this situation, valve type semi-closed extracorporeal circulation (VACC) was developed as a system that enables extracorporeal circulation (ECC) regardless of perfusionists’ experience. The VACC circuit is based on a conventional open-type ECC circuit. A safety valve is installed at the outlet of the reservoir. It is closed by lowering the reservoir pressure below the venous circuit pressure (Pv), thereby providing a closed-type ECC in which the reservoir is separated from the venous circuit (V-circuit). A closed-type ECC needs means to cope with negative pressure generated in the V-circuit and to remove air mixed in the V-circuit. Water experiments to verify the safety of the VACC were conducted. In experiments simulating low venous return, when the Pv dropped, the safety valve opened so that the V-circuit was connected to the reservoir, and the excessive negative pressure was relieved. In the VACC circuit, a bubble trap is installed in the V-circuit, and the air is degassed to the reservoir by a roller pump (D-pump). A water experiment was conducted to verify the principle of the constant degassing method using the D-pump. It verified that the blood storage volume could be maintained constant even if the D-pump is continuously driven. The VACC system provides handling of air mixed in the V-circuit and safety in the case of low venous return.
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4

Takano, Kosuke, Chihiro Sugano, Masanobu Inubushi, et al. "Compact reservoir computing with a photonic integrated circuit." Optics Express 26, no. 22 (2018): 29424. http://dx.doi.org/10.1364/oe.26.029424.

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5

Xiao, Ran, and Chunhong Chen. "Gate-Level Circuit Reliability Analysis: A Survey." VLSI Design 2014 (July 10, 2014): 1–12. http://dx.doi.org/10.1155/2014/529392.

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Circuit reliability has become a growing concern in today’s nanoelectronics, which motivates strong research interest over the years in reliability analysis and reliability-oriented circuit design. While quite a few approaches for circuit reliability analysis have been reported, there is a lack of comparative studies on their pros and cons in terms of both accuracy and efficiency. This paper provides an overview of some typical methods for reliability analysis with focus on gate-level circuits, large or small, with or without reconvergent fanouts. It is intended to help the readers gain an insight into the reliability issues, and their complexity as well as optional solutions. Understanding the reliability analysis is also a first step towards advanced circuit designs for improved reliability in the future research.
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6

Keshavarzi, Davood, Ebrahim Farjah, and Teymoor Ghanbari. "Hybrid DC Circuit Breaker and Fault Current Limiter With Optional Interruption Capability." IEEE Transactions on Power Electronics 33, no. 3 (2018): 2330–38. http://dx.doi.org/10.1109/tpel.2017.2690960.

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7

Alkhorshid, Daniel Rostami, Seyyedeh Fatemeh Molaeezadeh, and Mikaeil Rostami Alkhorshid. "Analysis: Electroencephalography Acquisition System: Analog Design." Biomedical Instrumentation & Technology 54, no. 5 (2020): 346–51. http://dx.doi.org/10.2345/0899-8205-54.5.346.

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Abstract Electroencephalography (EEG) is a sensitive and weak biosignal that varies from person to person. It is easily affected by noise and artifacts. Hence, maintaining the signal integrity to design an EEG acquisition system is crucial. This article proposes an analog design for acquiring EEG signals. The proposed design consists of eight blocks: (1) a radio-frequency interference filter and electro-static discharge protection, (2) a preamplifier and second-order high-pass filter with feedback topology and an unblocking mechanism, (3) a driven right leg circuit, (4) two-stage main and variable amplifiers, (5) an eight-order anti-aliasing filter, (6) a six-order 50-Hz notch filter (optional), (7) an opto-isolator circuit, and (8) an isolated power supply. The maximum gain of the design is approximately 94 dB, and its bandwidth ranges from approximately 0.18 to 120 Hz. The depth of the 50-Hz notch filter is −35 dB. Using this filter is optional because it causes EEG integrity problems in frequencies ranging from 40 to 60 Hz.
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8

Bou Sanayeh, Marwan, Wissam Hamad, and Werner Hofmann. "Equivalent Circuit Model of High-Performance VCSELs." Photonics 7, no. 1 (2020): 13. http://dx.doi.org/10.3390/photonics7010013.

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In this work, a general equivalent circuit model based on the carrier reservoir splitting approach in high-performance multi-mode vertical-cavity surface-emitting lasers (VCSELs) is presented. This model accurately describes the intrinsic dynamic behavior of these VCSELs for the case where the lasing modes do not share a common carrier reservoir. Moreover, this circuit model is derived from advanced multi-mode rate equations that take into account the effect of spatial hole-burning, gain compression, and inhomogeneity in the carrier distribution between the lasing mode ensembles. The validity of the model is confirmed through simulation of the intrinsic modulation response of these lasers.
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9

Fukuda, Keisuke, Yoshihiko Horio, Takemori Orima, Koji Kiyoyama, and Mitsumasa Koyanagi. "Cyclic reservoir neural network circuit for 3D IC implementation." Nonlinear Theory and Its Applications, IEICE 12, no. 3 (2021): 309–22. http://dx.doi.org/10.1587/nolta.12.309.

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10

Paul, Dev, Vahik Haddadian, Ben Chavdarian, and Kevin Peterson. "Low-Voltage Shore Connection Power Systems: Optional Designs and a Safety Loop Circuit." IEEE Industry Applications Magazine 24, no. 5 (2018): 62–68. http://dx.doi.org/10.1109/mias.2017.2740448.

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