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Motor Type Selection
Parameters that define a motor type are the mechanical output power, the shaft bearing system, the commutation system used, and the possible combinations with gearheads and sensors. The most important criteria include the speed and torque requirements, and the commutation system...
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Finite Element Analysis Report - Advantages of the CTE Matched Flange
dissipation are presented. Since the primary objective of the analysis was to obtain the stresses in the bonding layer between the resistor substrate and the carrier, several of the construction details which would not significantly influence this behavior were omitted from the model. The plating...
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Analysis and Design of Vertical Cavity Surface Emitting Lasers - Preface
can be evaluated. Spatial hole burning of carrier concentration also has significant influence on the modal profile of VCSELs. Therefore, Chapter 6 describes the use of a simple rate equation to evaluate the distribution of carrier concentration inside the active region. In this case...
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MICRO: Defect/Yield Analysis & Metrology
with the objective of determining which conditions yield the optimum (longest) length. The parameters that were varied included down force, carrier speed, table speed, slurry type, and pad type. Table I lists a few examples of the test results to illustrate the range of planarization lengths...
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Gas Chromatography in Environmental Analysis (.pdf)
the mixture of. range, detection limits and characteristics. compounds is completely resolved. To. are described. Individual species can be. confirm that a particular component is. measured from ppt to % levels with either a. present requires the identification on two. specific or universal type...
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Delta Denies United Merger Talks
by Chairman Daniel Carp -- to work with his management team on all the airline's strategic options. The carrier has also hired financial and legal advisors to help with the review and offer recommendations to the board. "There have been no talks with United regarding any type of consolidation transaction...
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Strain Gage Technical Data
Arrangement of Gages in Gage Pattern Grid Resistance Strain Sensitive Alloy Carrier Material Gage Width Solder Tab Type Configuration of Solder Tab Availability Strain gage dimensions The active grid length, in the case of foil gages, is the net grid length without the tabs...
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Critical Leak Requirements in GC/MS, LC/MS and Analytical Instruments (.pdf)
,. results. The valves for GC and LC. have specific leak rate limits due. control the flow of the sample and. to material porosity (permeation). carrier, which are critical in setting. · Seat and Seal Load. the ideal conditions for analysis. An. Seat and seal load are determined. inferior valve will produce...
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MICRO: Product Technology News
in various materials, including Type 316L stainless steel, Vim-Var, and C-22. These fittings have a clean, smooth surface finish and include various types of glands, elbows, tees, crosses, bulkhead unions, nuts, and gaskets. The standard finish is 10 Ra or less, and a surface finish of less than 5 Ra...
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Establishing Temperature Change Characteristics Associated with Equilibrium Times of Permeation Tubes (.pdf)
. from expected permeation rate data. Performing calibrations during non-equilibrated transient. phases affect analyses and wastes time. This paper investigates transient temperature. characteristics and establishes equilibrium times for disposable type permeation tubes containing. hydrogen sulfide...