Bibliographies thématiques / The Reservoir Optional Circuit

Littérature scientifique sur le sujet « The Reservoir Optional Circuit »

Auteur : Grafiati
Publié le 11 mars 2023

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Articles de revues sur le sujet "The Reservoir Optional Circuit"

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El-Essawi, A., I. Breitenbach, K. Ali, P. Jungebluth, R. Brouwer, M. Anssar et W. Harringer. « Minimized perfusion circuits : an alternative in the surgical treatment of Jehovah’s Witnesses ». Perfusion 28, no 1 (20 août 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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Peter, Benjamin St, Rainer A. Dressler, Yu-hui Chiu et Timothy Fedkiw. « Electrospray Propulsion Engineering Toolkit (ESPET) ». Aerospace 7, no 7 (4 juillet 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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Okumura, Takahiro, Keisuke Matsuda, Yu Fukuoka, Junya Dai et Naoko Shiraishi. « Development of a valve type semi-closed extracorporeal circulation system ». Journal of Artificial Organs 24, no 3 (3 février 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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Takano, Kosuke, Chihiro Sugano, Masanobu Inubushi, Kazuyuki Yoshimura, Satoshi Sunada, Kazutaka Kanno et Atsushi Uchida. « Compact reservoir computing with a photonic integrated circuit ». Optics Express 26, no 22 (26 octobre 2018) : 29424. http://dx.doi.org/10.1364/oe.26.029424.

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Xiao, Ran, et Chunhong Chen. « Gate-Level Circuit Reliability Analysis : A Survey ». VLSI Design 2014 (10 juillet 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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Keshavarzi, Davood, Ebrahim Farjah et Teymoor Ghanbari. « Hybrid DC Circuit Breaker and Fault Current Limiter With Optional Interruption Capability ». IEEE Transactions on Power Electronics 33, no 3 (mars 2018) : 2330–38. http://dx.doi.org/10.1109/tpel.2017.2690960.

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Alkhorshid, Daniel Rostami, Seyyedeh Fatemeh Molaeezadeh et Mikaeil Rostami Alkhorshid. « Analysis : Electroencephalography Acquisition System : Analog Design ». Biomedical Instrumentation & ; Technology 54, no 5 (1 septembre 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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Bou Sanayeh, Marwan, Wissam Hamad et Werner Hofmann. « Equivalent Circuit Model of High-Performance VCSELs ». Photonics 7, no 1 (18 janvier 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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Fukuda, Keisuke, Yoshihiko Horio, Takemori Orima, Koji Kiyoyama et 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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Paul, Dev, Vahik Haddadian, Ben Chavdarian et Kevin Peterson. « Low-Voltage Shore Connection Power Systems : Optional Designs and a Safety Loop Circuit ». IEEE Industry Applications Magazine 24, no 5 (septembre 2018) : 62–68. http://dx.doi.org/10.1109/mias.2017.2740448.

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Thèses sur le sujet "The Reservoir Optional Circuit"

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Holland, Eric T. « Cavity State Reservoir Engineering in Circuit Quantum Electrodynamics ». Thesis, Yale University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10012490.

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Engineered quantum systems are poised to revolutionize information science in the near future. A persistent challenge in applied quantum technology is creating controllable, quantum interactions while preventing information loss to the environment, decoherence. In this thesis, we realize mesoscopic superconducting circuits whose macroscopic collective degrees of freedom, such as voltages and currents, behave quantum mechanically. We couple these mesoscopic devices to microwave cavities forming a cavity quantum electrodynamics (QED) architecture comprised entirely of circuit elements. This application of cavity QED is dubbed Circuit QED and is an interdisciplinary field seated at the intersection of electrical engineering, superconductivity, quantum optics, and quantum information science. Two popular methods for taming active quantum systems in the presence of decoherence are discrete feedback conditioned on an ancillary system or quantum reservoir engineering. Quantum reservoir engineering maintains a desired subset of a Hilbert space through a combination of drives and designed entropy evacuation. Circuit QED provides a favorable platform for investigating quantum reservoir engineering proposals. A major advancement of this thesis is the development of a quantum reservoir engineering protocol which maintains the quantum state of a microwave cavity in the presence of decoherence. This thesis synthesizes strongly coupled, coherent devices whose solutions to its driven, dissipative Hamiltonian are predicted a priori. This work lays the foundation for future advancements in cavity centered quantum reservoir engineering protocols realizing hardware efficient circuit QED designs.

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Štěrba, Vítězslav. « Návrh zhášení zahořelého paliva v mlýnském okruhu kotle na Teplárně Karviná ». Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231251.

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This master´s thesis solves the coal dust autoignition problems in the heatplant Karviná. The first part is devoted to the combustion of pulverized coal possibilities and technical description at the heatplant Karviná equipment. The second part deals with the phenomenon of the coal self-ignition itself. In the last part the calculation of the mill circuit heat balance is solved as well as it´s inerting protection. The final part of the thesis is devoted to the coal powder reservoir, where the fuel blaze is the most common.
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Cohen, Joachim. « Autonomous quantum error correction with superconducting qubits ». Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEE008/document.

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Dans cette thèse, nous développons plusieurs outils pour la Correction d’Erreur Quantique (CEQ) autonome avec les qubits supraconducteurs.Nous proposons un schéma de CEQ autonome qui repose sur la technique du « reservoir engineering », dans lequel trois qubits de type transmon sont couplés à un ou plusieurs modes dissipatifs. Grâce à la mise au point d’une interaction effective entre les systèmes, l’entropie créée par les éventuelles erreurs est évacuée à travers les modes dissipatifs.La deuxième partie de ce travail porte sur un type de code récemment développé, le code des chats, à travers lequel l’information logique est encodée dans le vaste espace de Hilbert d’un oscillateur harmonique. Nous proposons un protocole pour réaliser des mesures continues et non-perturbatrices de la parité du nombre de photons dans une cavité micro-onde, ce qui correspond au syndrome d’erreur pour le code des chats. Enfin, en utilisant les résultats précédents, nous présentons plusieurs protocoles de CEQ continus et/ou autonomes basés sur le code des chats. Ces protocoles offrent une protection robuste contre les canaux d’erreur dominants en présence de dissipation stimulée à plusieurs photons
In this thesis, we develop several tools in the direction of autonomous Quantum Error Correction (QEC) with superconducting qubits. We design an autonomous QEC scheme based on quantum reservoir engineering, in which transmon qubits are coupled to lossy modes. Through an engineered interaction between these systems, the entropy created by eventual errors is evacuated via the dissipative modes.The second part of this work focus on the recently developed cat codes, through which the logical information is encoded in the large Hilbert space of a harmonic oscillator. We propose a scheme to perform continuous and quantum non-demolition measurements of photon-number parity in a microwave cavity, which corresponds to the error syndrome in the cat code. In our design, we exploit the strongly nonlinear Hamiltonian of a highimpedance Josephson circuit, coupling ahigh-Q cavity storage cavity mode to a low-Q readout one. Last, as a follow up of the above results, we present several continuous and/or autonomous QEC schemes using the cat code. These schemes provide a robust protection against dominant error channels in the presence of multi-photon driven dissipation
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Hanák, Miroslav. « Návrh transformační stanice pro vyvedení výkonu z fotovoltaické elektrárny ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217818.

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This master’s thesis engages in project of outgoing transformer unit for the photovoltaic power station. It describes project and its design documentation what conducts to practising of construction. It has compared investing to more expansive transformer what has lower loss. It describes charges of operation’s transformer in twenty years. It leads project of cable low voltage. It compares whether is better to use aluminium or cupric cables. Project is led with respect for investment costs and minimum of operation loss.
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Minganti, Fabrizio. « Out-of-Equilibrium Phase Transitions in Nonlinear Optical Systems ». Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC004/document.

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Dans cette thèse nous étudions théoriquement de systèmes dissipatifs pompés,décrits par une équation maîtresse de Lindblad. En particulier, nous adressons les problématiques liés à l’émergence de phénomènes critiques. Nous présentons une théorie générale reliant les transitions de phase du premier et deuxième ordres aux propriétés spectrales du superopérateur liouvillien. Dans la région critique, nous déterminons la forme générale de l’état stationnaire et de la matrice propre du liouvillien associée à son gap spectral. Nous discutons aussi l’utilisation de trajectoires quantiques individuelles afin de révéler l’apparition des transitions de phase. En ayant dérivé une théorie générale, nous étudions le modèle de Kerr en présence de pompage à un photon (cohérent) et à deux photons (paramétrique) ainsi que de dissipation. Nous explorons les propriétés dynamiques d’une transition de phase du premier ordre dans un modèle de Bose-Hubbard dissipatif et d’une de second ordre dans un modèle XYZ dissipatif d’Heisenberg. Enfin, nous avons considéré la physique des cavités soumises à de la dissipation à un et deux photons ainsi qu’un pompage à deux photons, obtenu par ingénierie de réservoirs. Nous avons démontré que l’état stationnaire unique est un mélange statistique de deux états chats de Schrödinger, malgré de fortes pertes à un photon.Nous proposons et étudions un protocole de rétroaction pour la génération d’états chat purs
In this thesis we theoretically study driven-dissipative nonlinear systems, whosedynamics is capture by a Lindblad master equation. In particular, we investigate theemergence of criticality in out-of-equilibrium dissipative systems. We present a generaland model-independent spectral theory relating first- and second-order dissipative phasetransitions to the spectral properties of the Liouvillian superoperator. In the critical region,we determine the general form of the steady-state density matrix and of the Liouvillianeigenmatrix whose eigenvalue defines the Liouvillian spectral gap. We discuss the relevanceof individual quantum trajectories to unveil phase transitions. After these general results,we analyse the inset of criticality in several models. First, a nonlinear Kerr resonator in thepresence of both coherent (one-photon) and parametric (two-photon) driving and dissipation.We then explore the dynamical properties of the coherently-driven Bose-Hubbard and of thedissipative XYZ Heisenberg model presenting a first-order and a second-order dissipativephase transition, respectively. Finally, we investigate the physics of photonic Schrödingercat states in driven-dissipative resonators subject to engineered two-photon processes andone-photon losses. We propose and study a feedback protocol to generate a pure cat-likesteady state
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MORJAN, MOHAMMED. « Modular Miniaturised Perfusion Circuits. From In Vitro Study to “Universal Heart Lung Machine” ». Doctoral thesis, 2015. http://hdl.handle.net/11562/901384.

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La circolazione extracorporea convenzionale (cCEC) è un trigger per una risposta infiammatoria sistemica cosí come per l´emodiluizione, coagulopatie e disfunzione d´organo. La circolazione extracorporea miniaturizzata (MECC) ha il potenziale vantaggio di ridurre questi effetti deleteri. I dubbi sulla sua sicurezza sono stati uno dei principali motivi che hanno impedito la sua accettazione e la sua diffusione persino nei grandi centri dove il suo uso è limitato agli interventi di bypass aortocoronarico (CABG). Dopo una larga esperienza nella MECC abbiamo apportato delle modifiche tali da fugare i dubbi sulla sua sicurezza e tali da rendere il sistema ROCsafe (The Reservoir Optional Minimized perfusion circuits, Terumo Europe, Leuven, Belgium) una circolazione extracorporea universale per tutte le procedure in Cardiochirurgia. Da Gennaio 2013 a Dicembre 2013 abbiamo effettuato un totale di 113 procedure chirurgiche. Tra queste 100 sono state condotte con la ROCsafe. Se si escludono gli interventi con arresto di circolo o che potenzialmente ne avrebbero avuto bisogno, la ROCsafe è stata usata nell´88% degli interventi. Questi includono 62 operazioni classificate come procedure semplici (CABG, AVR, CABG+AVR) con un tempo di CEC medio di 85±28min ed un tempo di clampaggio medio di 55±24min, e 38 procedure complesse (inclusi 15 reinterventi) con un tempo di CEC medio di 141±59 min ed un clampaggio medio di 97+-42min. Delle procedure semplici l´82% erano non elettive, il 10% dei pazienti aveva una FE < 30% e la maggioranza una disfunzione renale. Delle procedure complesse 37% erano urgenze, 15% dei pazienti aveva una FE < 30% e la maggioranza una disfunzione renale. Nella totalitá dei casi è stato utilizzato un priming retrogrado autologo, la cardioplegia ematica è stata utilizzata nelle procedure semplici mentre la cristalloide nella maggioranza delle complesse ma drenata attraverso l´atrio di destra. La tecnica di cannulazione è stata adattata in base alle singole procedure ponendo particolare attenzione all´ingresso di aria e al rischio di sanguinamento. La mortalitá a 30 giorni si è assestata al 5% per le procedure semplici, i pazienti deceduti avevano un Euroscore logistico medio del 36%. La mortalitá a 30 giorni per i casi complessi è stata del 2,6%, i pazienti deceduti avevano un Euroscore logistico medio > 60% mentre nessun paziente con un Euroscore logistico < 40% è deceduto. L´incidenza di fibrillatione atriale postoperatoria è stata del 13% nei casi semplici e del 16% nei casi complessi. Un “Optimum outcome” definito come libertá da tutte le complicanze e da trasfusioni è stato del 52% e del 42% rispettivamente.
Conventional Cardiopulmonary Bypass (cCPB) is a trigger of systemic inflammatory response, hemodilution, coagulopathy, and organ failure. Miniaturised extra corporeal circulation (MECC) has the potential to reduce these deleterious effects. Safety concerns have been one of the main reasons opposing a wider acceptance of miniaturised perfusion circuits and impeding their wider applicability. Even centers with extensive experience have limited their use to simple coronary artery bypass (CABG). Following an extensive experience with MECC and a multitude of modifications that have negligated safety concerns we have set out to employ the Reservoir Optional Minimized Perfusion Circuit (ROCsafe, Terumo Europe, Leuven, Belgium) as a universal heart lung machine for all cardiac procedures. In the present series, we reported our experience From January 2013 to December 2013 with a total of 113 cardiac surgical procedures. Thereof 100 operations were done using the ROCsafe. Excluding procedures done under circulatory arrest or with the potential need for circulatory arrest, the ROCsafe was employed in 88% of surgeries. These included 62 operations classified as simple surgical operations (CABG, Aortic valve replacement (AVR) and CABG +AVR) with a mean bypass time of 85±28 min. and a mean clamping time of 55±24 min. and 38 operations classified as complex operations (including 15 re-interventions) with a mean bypass time of 141 ±59 min. and a mean clamping time of 97±42 min. Of the simple procedures 82% were non elective, 10% of patients had an EF<30% and the majority had an impaired renal function. Of the complex procedure 37% were urgent, 15% had an EF <30% and the majority had an impaired renal function. Retrograde autologous priming was used in all cases, blood cardioplegia was used in simple cases while crystalloid cardioplegia was used in most complex cases but drained via the right atrium. The cannulation technique was tailored to the needs of each procedure with special emphasis on avoidance of bleeding or air leaks. The 30 day mortality amounted to 5% in simple procedures, the patients who died having had a mean log Euroscore of 36%. The 30 day mortality of the complex cases was 2, 6% while their cumulative log Euroscore was>600%, no patient with a log Euroscore <40% having died. Postoperative atrial fibrillation occurred in 13% of simple cases and 16% of complex cases while Optimum outcome defined as freedom of all complications and blood transfusions was achieved in 52% and 42% respectively.
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Munira, Sirajum. « An electric circuit network model for fluid flow in oil reservoir ». Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2512.

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Interwell connectivity is a very important piece of the puzzle for petroleum engineers. To optimize the injection well flow for increasing the production rate, interwell connectivity is a very important parameter. To build a model that works with better precision and with less effort has always been desired by reservoir engineers. In this study we developed an electric circuit network model (referred as the admittance or ymodel) for calculating the admittance parameters to predict branch flow rates (injectorproducer well pair) of oil reservoirs with precision. The y-model is very simple and efficient model that can predict branch flow very efficiently. Injection and production flow rates are the key data used in this model, which also happens to be the most abundant data for oil reservoirs. Injector well bottom-hole pressure data can also be used in this model if available. The governing equation of the electric circuit analogy of well to well flow rates in the oil reservoir is based on Ohm’s law for admittance. A mathematical procedure is also being developed for this circuit network model which solves a series of equations and finds unique solutions for the admittances and branch flows. These results can further be used for predicting the production flow rate for individual producer well. The model shows very good agreement with the exploration data of real oil reservoir.
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Chapitres de livres sur le sujet "The Reservoir Optional Circuit"

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« Balancing Fisheries Management and Water Uses for Impounded River Systems ». Dans Balancing Fisheries Management and Water Uses for Impounded River Systems, sous la direction de William B. Jacobson et Kirk L. Koch. American Fisheries Society, 2008. http://dx.doi.org/10.47886/9781934874066.ch30.

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<em>Abstract</em>.—The Lake Havasu Fisheries Improvement Program was established in 1992 through the development of a partnership with all of the state, federal, and private organizations that hold an interest in improving the fisheries in Lake Havasu. As the 10-year program reached completion, the actual costs were half of the original estimate. Nonfederal sources provided more than 7 million dollars and the volunteer labor force contributed more than 170,000 h of service in the construction and placement of artificial structures. Angler satisfaction improved, even with a quadrupling of the angling pressure to the lake. Nearly 40 national and regional fishing tournaments returned Lake Havasu to their circuit schedule as a result of this program. The five recreational angling facilities provided free 24-h access to the lake for all ages and physical abilities. These facilities receive more than 80,000 angler use days per year. In addition to all of the sport fish activities, the program was able to re-establish populations of two federally listed endangered species of fish to the reservoir, ending a 20-year absence in the area. As a final accomplishment, the partnership signed a new memorandum of understanding that covers future coordinated maintenance and monitoring activities on the reservoir to sustain the benefits and document long-term results.
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Magee, Patrick, et Mark Tooley. « Gas pressure, Volume and Flow Measurement ». Dans The Physics, Clinical Measurement and Equipment of Anaesthetic Practice for the FRCA. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199595150.003.0018.

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The physics of pressure, flow and the gas laws have been discussed in Chapter 7 in relation to the behaviour of gas and vapour. This section will focus on the physical principles of the measurement of gas pressure, volume and flow. Unlike a liquid, a gas is compressible and the relationship between pressure, volume and flow depends on the resistance to gas flow (or impedance if there is a frequency dependence between pressure and flow in alternating flow, see Chapter 4 for the electrical analogy of this) in conduits (bronchi, anaesthetic tubing); it also depends on the compliance of structures being filled and emptied (alveoli, reservoir bags, tubing or bellows). Normal breathing occurs by muscular expansion of the thorax, thus lowering the intrathoracic pressure, allowing air or anaesthetic gas to flow towards the alveoli down a pressure gradient from atmospheric pressure. When positive pressure ventilation occurs, gas is ‘pushed’ under pressure into the alveoli. Depending on the exact relationship between the ventilator and the lungs, different relationships exist between airway pressure (rather than alveolar pressure, which cannot easily be measured) and gas flow and volume. Gas pressure measurement devices were traditionally in the form of an aneroid barometer, a hollow metal bellows calibrated for pressure and temperature, which contracts when the external pressure on it increases, and expands when it decreases. The movement is linked to a pointer and indicator dial. It is often more convenient to make the device in the shape of part of a circular section, but the principle is the same. This is what the Bourdon gauge, which commonly measures pressure in gas cylinders, looks like. The detection of movement of the diaphragm of an aneroid barometer can take several forms. The movement can either be linked via a direct mechanical linkage to a pointer, or diaphragm movement can be linked to a capacitative or inductive element in an electrical circuit, such as a Wheatstone bridge. Airway pressure during spontaneous breathing or artificial ventilation is low. The preferred units of measurement are cm H2O and the range of values is between −20 and +20 cmH2O. The aneroid barometer to measure this will therefore be of light construction, using thin copper for the bellows material.
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Actes de conférences sur le sujet "The Reservoir Optional Circuit"

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Jensen, Johannes H., et Gunnar Tufte. « Reservoir computing with a chaotic circuit ». Dans Proceedings of the 14th European Conference on Artificial Life ECAL 2017. Cambridge, MA : MIT Press, 2017. http://dx.doi.org/10.7551/ecal_a_039.

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Ma, Wen, Tyler Hennen, Martin Lueker-Boden, Rick Galbraith, Jonas Goode, Won Ho Choi, Pi-Feng Chiu et al. « A Mott Insulator-Based Oscillator Circuit for Reservoir Computing ». Dans 2020 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2020. http://dx.doi.org/10.1109/iscas45731.2020.9181105.

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Sayyaparaju, Sagarvarma, Mst Shamim Ara Shawkat, Md Musabbir Adnan et Garrett S. Rose. « Circuit Techniques for Efficient Implementation of Memristor Based Reservoir Computing ». Dans 2020 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2020. http://dx.doi.org/10.1109/iscas45731.2020.9180800.

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Koga, Yohei, et Manabu Kai. « A Novel Antenna Covered by Planar Inverted-L Stub to Keep the Communication Distance whether Optional Circuit Board Exist or not ». Dans 2019 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC). IEEE, 2019. http://dx.doi.org/10.1109/apwc.2019.8870429.

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Shakya, Biraj, Mostafa M. Fouda, Steve C. Chiu et Zubair Md Fadlullah. « A Circuit-embedded Reservoir Computer for Smart Noise Reduction of MCG Signals ». Dans 2021 IEEE International Conference on Internet of Things and Intelligence Systems (IoTaIS). IEEE, 2021. http://dx.doi.org/10.1109/iotais53735.2021.9628824.

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Watanabe, Shunya, et Takahide Oya. « Design of Single-Electron Reservoir Computing Circuit and Evaluation of Its Learning Function ». Dans 2022 IEEE Silicon Nanoelectronics Workshop (SNW). IEEE, 2022. http://dx.doi.org/10.1109/snw56633.2022.9889069.

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Taherimoghaddam, Mahdi. « Performance Testing of Centrifugal Compressors Within the Petroleum Industry : A User’s View ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79046.

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The role of centrifugal compressors within the petroleum industry is critical since they are used in all aspects of gas processing such as gas lift, transmission and distribution, re-injection into reservoir for pressure maintenance, wellhead separator boosting, casing head gas collection, under ground gas storage and liquefaction for transport, [1]. Among those optional tests applicable to centrifugal compressors stressed in API STD 617, performance test demands a great attention, since it determines if equipment meets design or expected performance criteria and serve as a means to determine fulfillment of manufacturer’s guarantees. Having a working knowledge coupled with more rigorous testing prior to accepting delivery of centrifugal compressors can reveal a fairly large percentage of performance failures. The main purpose of writing this paper is to share the author’s experience of purchasing and testing centrifugal compressors within the petroleum industry. Furthermore, it attempts to address the potential pitfalls of a poor performance test procedure.
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Tan, Cher Ming, et Chunmiao Fu. « Effectiveness of reservoir length on electromigration lifetime enhancement for ULSI interconnects with advanced technology nodes ». Dans 2012 IEEE 11th International Conference on Solid-State and Integrated Circuit Technology (ICSICT). IEEE, 2012. http://dx.doi.org/10.1109/icsict.2012.6467816.

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Rafiee, Javad, Carlos Mario Calad Serrano, Pallav Sarma, Sebatian Plotno et Fernando Gutierrez. « Subsurface Back Allocation : Calculating Production and Injection Allocation by Layer in a Multilayered Waterflood Using a Combination of Machine Learning and Reservoir Physics ». Dans International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21239-ms.

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Abstract Allocation of injection and production by layer is required for several production and reservoir engineering workflows including reserves estimation, water injection conformance, identification of workover and infill drilling candidates, etc. In cases of commingled production, allocation to layers is unknown; running production logging tools is expensive and not always possible. The current industry practice utilizes simplified approaches such as K*H based allocation which provides a static and inaccurate approximation of the allocation factors; this manual approach requires trial and error and can take several weeks in complex fields. This paper presents a novel technique to solve this problem using a combination of reservoir physics and machine learning. The methodology is made up of four stages: Data Entry: includes production at well level (commingled), injection at layer level and injection patterns or a connectivity map (optional) Gross Match: in order to match gross production for each well, the tool solves for time-varying layer-level injection allocation factors using a total material balance equation across all wells. Phase Match: having the allocation factors from the previous step, the tool automatically tunes various petrophysical parameters (i.e. porosity, relative permeability, etc.) in the physics model for each injector-producer pair across all the connected layers to match the oil and water production in each producer. An ensemble of several models can be run simultaneously to account for the probabilistic nature of the problem. Output: The steps 2 and 3 can be performed at pattern level for all connected patterns or for the whole field. The application of the technology in a complex field with 80+ layers in Southern Argentina is demonstrated as a case study of the benefits of the adoption of the technology.
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O’Bryan, Roshani, Risa Rutter et Ketan Sheth. « Validation and Optimization of Heat Transfer in the Electrical Submersible Pump Motor by CFD ». Dans ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65278.

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In oilfield applications, an electrical submersible pumping (ESP) system is placed inside the wellbore to provide the necessary energy to lift the fluids to the surface when the reservoir pressure is not sufficient. The ESP system consists of an electric motor, seal section, rotary gas separator (optional), multistage centrifugal pump, electric power cable, motor controller and transformers. The electric motor is placed on the bottom of the unit, and the production fluids are allowed to pass around the motor in order to cool it. The motor generates heat while operating. Study on the temperature rise inside the motor is important to prevent components from failing due to overheating. The temperature rise inside a motor has not been studied extensively. In this work, the temperature of components inside an electric motor was measured under different loading conditions, fluid viscosity and temperature. After testing, the computational fluid dynamic (CFD) was used to model the temperature heat rise in the same motor under the same conditions. The CFD models were validated by the test data within ± 5% error. Furthermore, the validated CFD model was used to calculate the heat rise for different insulation and bedding materials. These computational results from CFD are used to optimize the design of the electrical motor.
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