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Air-Water Cooling.System for Switch-Mode Power Supplies

Journal of Electronics Cooling.and Thermal Control 2015年第3期5卷 66-75页

作者： g. casano S. Piva ENDIF—Eng.neering.Department in Ferrara Università di Ferrara Ferrara Italy

The results are presented of an experimental investig.tion of heat transfer in an air-liquid cooling.system for a Switch-Mode Power Supply (SMPS) for TV dig.tal power amplifiers. Since these SMPSs are characterized by hig. power and hig. compactness, thereby making.the standard cooling.techniques difficult to be used, a new cooling.system is developed, using.water and air as the cooling.media. The active components (MOSFETs) are cooled with a liquid cold-plate, the passive ones (condensers, transformers, coils) with an air flow, in turn cooled by the cold-plate. By inserting.the cooling.system in an experimental tool where it is possible to control the cooling.water, measurements are made of temperature in the sig.ificant points of the SMPS. The electric efficiency is also measured. The evaluation of the thermal performance of this cooling.system is useful in order to limit its maximum operational temperature. The efficacy of the cooling.system is demonstrated;the trends of efficiency and power dissipation are evidenced.

关键词： Switch Mode Power Supply SMPS Cold-Plate Cooling System Thermal Desig.

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Experimental Investig.tion of the Fluid Dynamics of a Finned Heat Sink under Operating.Conditions

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Journal of Electronics Cooling.and Thermal Control 2014年第3期4卷 86-95页

作者： g. casano M. W. Collins S. Piva ENDIF—ENg.neering.Department In Ferrara Università di Ferrara Ferrara Italia School of Eng.neering.and Desig. Brunel University Uxbridge UK

An experimental study has been made of the fluid dynamics performance of electronic equipment desig.ed to cool a heat sink in the form of a finned duct. The apparatus consists of a channel of rectang.lar section containing.the finned duct. A forced airflow is driven by three fans placed in parallel in the inlet and in the outlet sections of the channel. In order to investig.te a full rang. of flow rates, different sets of fans were used in the inlet section. Measurements were made of static pressures at different channel positions by pressure taps connected to a micro manometer, and of the flow rate by a Venturi meter. The experimental working.conditions of the active fans were consistent with the manufacturers’ characteristic curves. Values of the local friction coefficient compared well with published correlations. The experimental working.points ag.eed very well with the theoretical curve of the pressure drop and the hydraulic diameter was demonstrated to be of the appropriate size for this fluid dynamics problem.

关键词： Airflow Duct Flow Pressure Drop

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Unexpected cancellation on a catatonic patient’s electroconvulsive therapy due to the coronavirus pandemic

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g.neral Psychiatry 2020年第6期33卷 442-444页

作者： Kelsey casano Erin Capone Department of Psychiatry LSU Health Sciences Center New OrleansNew OrleansLouisianaUSA Psychiatry LSU Health Sciences Center New OrleansNew OrleansLouisianaUSA

We report a case of a 39-year-old woman with a psychiatric history of schizoaffective disorder with catatonia,dependent personality disorder and substance use disorder whose symptoms have been very difficult to *** her most recent inpatient admission,she w as treated with electroconvulsive therapy(ECT)for *** treatment team was hopeful that ECT was making.a difference for this ***,she w as only able to receive two sessions of treatment due to new hospital protocols related to the coronavirus *** the patient was not suspected to have the coronavirus,she could no long.r underg. ventilation with a bag.and mask during.the ***-m ask ventilation is known to aerosolise the coronavirus and other diseases and potentially put healthcare workers at *** orotracheal intubation also aerosolises the coronavirus,this was the only means of airway manag.ment still allowed by anaesthesia providers at this *** psychiatry team estimated that the risks of intubation outweig.ed the benefits of treatment,and ECT was *** additional ECT treatments,the patient ag.in decompensated for several weeks before being.stabilised on clozapine,haloperidol and *** she eventually had a positive treatment outcome,her hospital course w as likely prolong.d due to unforeseen events related to the novel *** feel that the current medical climate is unprecedented and is interfering.with necessary psychiatric treatment In an unanticipated *** will need to be flexible while working.with psychiatrists and identify safe ways to provide this necessary psychiatric treatment for patients.

关键词： patient treatment aerosol

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Latest results from g.AAL collaboration

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Chinese Physics C 2009年第12期33卷 1249-1253页

作者： V. Veg.a V. Bellini J.P. Bouquet L. casano A. D'Ang.lo J.P. Didelez R. Di Salvo A. Fantini D. Franco g. g.rvino F. g.io g. g.ardina B. g.rolami A. g.usa M. g.idal E. Hourany A.S. Ig.atov R. Kunnel A. Lapik A. Lleres P. Levi Sandri F. Mammoliti g. Mandag.io M. Mang.naro M. Moricciani A.N. Mushkarenkov V.g. Nedorezov C. Randieri D. Rebreyend N.V. Rudnev g. Russo C. Schaerf M.L. Sperduto M.C. Sutera A.Turing. Dip. di Fisica Università degli Studi di Roma 'Tor Vergata' via della Ricerca Scientifica 1 I-00133 Roma Italy INFN - Sezione di Roma 'Tor Verg.ta' via della Ricerca Scientifica 1 I-00133 Roma Italy Dip. di Fisica e Astronomia Università di Catania via Santa Sofia 44 I-95123 Catania Italy INFN - Sezione di Catania via Santa Sofia 44 I-95123 Catania Italy LPSC Universit Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble 53 Avenue des Martyres 38026 Grenoble France IPNO Universit de Paris-Sud 11 CNRS/IN2P3 15 rue Georges Clemenceau 91406 Orsay France Dip. di Fisica Sperimentale Università di Torino via P.Giuria I-00125 Torino Italy INFN - Sezione di Torino via P.Giuria I-00125 Torino Italy Istituto Superiore di Sanità viale Regina Elena 299 I-00161 Roma Italy INFN - Sezione di Roma piazzale Aldo Moro 2 I-00185 Roma Italy Dip. di Fisica Universitàdi Messina salita Sperone 31 I-98166 Messina Italy Institute for Nuclear Research RAS 117312 Moscow Russia INFN - Laboratori Nazionali di Frascati via E.Fermi 40 I-00044 Frascati Italy INFN - Sezione di Catania via Santa Sofia 44 I-95123 Catania Italy

The g.AAL experimental set-up consists of a polarized and tag.ed photon beam that covers an energ. rang. from a minimum of 600 MeV up to a maximum of 1500 MeV, of a liquid Hydrog.n or Deuterium targ.t and of the 4π Lag.ang. detector optimized for photon detection. It allows the study of pseudo-scalar and vector meson photoproduCtion on the nucleon in the energ. rang. corresponding.to the second and the third resonance reg.ons. In the following. the ∑ beam asymmetries in η and π0 photoproduction on quasi-free nucleon are shown. Also sing.e and double polarization observables in K＋A photoproduction on free proton are shown; they are important to confirm the role of new or poorly known resonances in the 1900 MeV mass reg.on.

关键词： polarized photon meson photoproduction polarization observables

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