IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting最新文献

{"title":"Dielectrophoretic separation of cancer cells from blood","authors":"P. Gascoyne, Xiao-Bo Wang, Ying Huang, Frederick F. Becker","doi":"10.1109/IAS.1995.530461","DOIUrl":"https://doi.org/10.1109/IAS.1995.530461","url":null,"abstract":"Measurements have demonstrated that the dielectric properties of cells depend on their type and physiological status. For example, MDB-MB-231 human breast cancer cells were found to have a mean plasma membrane specific capacitance value of 26 nF/m/sup 2/, more than double the value observed for resting T-lymphocytes. When an inhomogeneous DC electric field is applied to a particle, a dielectrophoretic (DEP) force arises that depends on the particle dielectric properties. Therefore, cell having different dielectric characteristics will experience differential DEP forces when subjected to such a field. In this article we demonstrate the use of these differential DEP forces for the reparation of several different cancerous cell types from blood. These separations were accomplished using thin, flat chambers having microelectrode arrays on the bottom wall. DEP forces generated by the application of AC fields to the electrodes were used to influence the rate of elution of cells from the chamber by hydrodynamic forcer from a parabolic fluid flow profile. Electrorotation measurements were first made on the various cell types found within cell mixtures to be separated and theoretical modelling was used to derive the cell dielectric parameters. Optimum separation conditions were then predicted from the frequency and suspension conductivity dependencies of cell DEP responses defined by these dielectric parameters. Cell separations were then undertaken for various ratios of cancerous to normal cells at different concentrations. Fluted cells were characterized in terms of separation efficiency, cell viability, and separation speed. For example, after the separation of mixtures of MDA-MB-231 cells and normal whole human blood (ratio 1:3), the eluted normal blood cell fraction contained less than 0.01% of the starting concentration of cancerous cells, cell viability was not compromised, and separation speeds of at least 10/sup 3/ cells/sec were achieved. Theoretical and experimental criteria for the design and operation of such separators are presented.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123490087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AC motors for high-performance drives: a design-based comparison","authors":"A. Vagati, A. Fratta, G. Franceschini, P. M. Rosso","doi":"10.1109/IAS.1995.530371","DOIUrl":"https://doi.org/10.1109/IAS.1995.530371","url":null,"abstract":"Three AC motors are compared for application in high-performance controlled drives: induction; brushless; and synchronous reluctance motors. Their design is optimized under common design assumptions. Then, their given stall-torques are compared. In addition, their quadrature reactances are compared, as affecting overload and flux-weakening performances. Finally, applicative considerations are given, thus defining the most suitable solution for each field.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":" 22","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113952876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comparative investigation and evaluation of different methods for experimental determination of parameters for saturated induction machines with current-displacement rotor","authors":"O. Vaag Thorsen, M. Dalva","doi":"10.1109/IAS.1995.530354","DOIUrl":"https://doi.org/10.1109/IAS.1995.530354","url":null,"abstract":"The intention of this work is, in a practical way, to determine the motor parameters of a deep bar induction motor with the purpose to design suitable equivalent circuits and mathematical models that take skin effect and saturation into account. Only in particular cases the T-parameters of a deep bar motor are given by the manufacturer, in most cases the customer has to find a method to determine them. The present report gives a comparison and an evaluation of the results from the following methods: variable speed test; variable frequency test with sinusoidal voltage; and variable frequency test with nonsinusoidal voltage from inverter supply. The methods are discussed on the base of the motors equivalent circuit for harmonic voltage components when a nonsinusoidal voltage is impressed, and losses, saturation and skin effect are taken into account.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122580217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consideration of motor contribution in series ratings","authors":"G. Gregory, E. Curd","doi":"10.1109/IAS.1995.530433","DOIUrl":"https://doi.org/10.1109/IAS.1995.530433","url":null,"abstract":"Motor short circuit contribution is a real consideration in low-voltage systems. It must be considered in deciding whether to apply series ratings of overcurrent protective devices. Virtually every electrical system has motors in it some place. This paper: confirms the existence of low voltage motor short circuit contribution by test; examines some of the relevant literature; explores typical installations; and recommends application guidelines.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125262318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automatic functional model validation between SPICE and Verilog","authors":"M. Naum, Y. Inoue","doi":"10.1109/IAS.1995.530422","DOIUrl":"https://doi.org/10.1109/IAS.1995.530422","url":null,"abstract":"This paper outlines the development of a validation methodology suitable for testing and qualification of ASIC libraries. In particular this paper outlines a method which uses SPICE models in conjunction with Verilog models to validate the functionality of a Verilog library.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126212587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of lateral IGBT power devices with current sensor","authors":"Y.C. Liang, V. Hor","doi":"10.1109/IAS.1995.530412","DOIUrl":"https://doi.org/10.1109/IAS.1995.530412","url":null,"abstract":"MOS-controlled bipolar power devices provide attractive characteristics, such as high current capability, simplicity of low-power gate drive circuitry and fast turn-off characteristics. In this paper, the design of a lateral IGBT with an n/sup +/ anode buffer layer and a p/sup +/ cathode buried layer is investigated. The influence of several internal parameters on the device performance in terms of forward conduction, turn-off, and breakdown were studied. Initially, a current sensor was incorporated as part of the lateral IGBT device structure with its sensing ability evaluated. The sensor contact is placed near the cathode to sense the lateral current and is able to provide a constant current sensing ratio with respect to the wide changes of operating current density and gate voltage. Small variations of the sensing ratios were maintained over the temperature range of 250 to 450 K.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126389676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of charge elimination by corona discharge on the characteristics of contact charging of high polymers","authors":"T. Hase, I. Hiyoshi, Y. Murata","doi":"10.1109/IAS.1995.530484","DOIUrl":"https://doi.org/10.1109/IAS.1995.530484","url":null,"abstract":"Charge elimination using ions generated by corona discharge in N/sub 2/ gas is investigated. An electrode system composed of a needle and a disc electrode was used for a charge eliminator and Ions are took out of a small aperture of the disk by gas flow. The electrostatic charge on both sides of polymer film is satisfactorily eliminated at the same time using two eliminators. When the sample film is directly exposed to corona at the point of needle during charge eliminating treatment, it is observed that, after this treatment, the contact charging characteristics of polyethylene changed seriously. When the sample surface is indirectly exposed by conveying ions to the sample using a bent pipe, this effect can be avoided.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125903211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of pulsed discharge plasma for methanol synthesis","authors":"B. Rajanikanth, K. Shimizu, M. Okumoto, S. Katsura, A. Mizuno","doi":"10.1109/IAS.1995.530474","DOIUrl":"https://doi.org/10.1109/IAS.1995.530474","url":null,"abstract":"Synthesis of methanol using pulsed discharge plasma process is gaining significance. We report the production of methanol from methane and CO/sub 2//H/sub 2/O, using pulsed discharge. Experiments were conducted at very low temperature (-192/spl deg/C) in addition to normal room temperature. Two types of plasma reactors, cylindrical and rectangular, were tested for methanol production with different corona electrodes (straight wire, helical wire and barbed plate). Gas analysis was carried out by GC-MS and the yield of methanol at various operating conditions was compared and discussed. Experiments were carefully conducted laboratory environment.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129947287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applying HID high-pressure sodium lamps in a variable-voltage environment","authors":"D. Dorr, A. Mansoor, A. Morinec, J. C. Worley","doi":"10.1109/IAS.1995.530564","DOIUrl":"https://doi.org/10.1109/IAS.1995.530564","url":null,"abstract":"This paper presents the results of laboratory tests to determine the effects of voltage sags, interruptions, and fluctuations on high-pressure sodium (HPS) lamps and ballasts. The way these ballasted lamps react to sags and interruptions in the laboratory is then compared to a model of the real-world electrical environment created from data gathered during three North American power quality surveys. This work also shows how HPS immunity to voltage variations depends significantly on the ballast type and the lamp age.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129675525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new dynamic filter for the electronic ballast with the parallel-load resonant inverter","authors":"C. Moo, Y. Chuang, J.C. Lee","doi":"10.1109/IAS.1995.530633","DOIUrl":"https://doi.org/10.1109/IAS.1995.530633","url":null,"abstract":"This paper presents an efficient, small-sized, and cost-effective dynamic filter circuit for electronic ballasts with parallel-load resonant inverters. The proposed circuit performs the current shaping function by interposing resonant energy tanks between the bridge rectifier and the inverter stage. Theoretical and experimental results prove that almost unity power factor can be achieved by adding only few reactive components to the original circuit of the electronic ballast.","PeriodicalId":117576,"journal":{"name":"IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129557149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}