Sathyanarayana
Amardeep Sathyanarayana, Austin, TX US
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20150330831 | METHOD, APPARATUS AND SYSTEM FOR PORTABLE DEVICE SURFACE AND MATERIAL ANALYSIS - A method and apparatus for determining properties of at least one of a surface or materials adjacent to a portable device. The method includes windowing a segment of the received signal to remove an edge transients, computing the FFT power spectral density of the signal, determining a peak in the spectral energy at a frequency, finding local peaks by determining the difference in the signal amplitude is relation to a pre-determined threshold, and computing harmonic energy according to the local peaks and the difference and determining at least one property of the surface or material. | 11-19-2015 |
Babu Sathyanarayana, La Crosse, WI US
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20140046916 | CONTACT CLEANSER FOR MOBILE DEVICES - Reading at least one item of information stored on a mobile device that is associated with at least one contact stored on the mobile device and creating a cleaning request for the at least one read item of information associated with the at least one contact. Submitting the cleaning request to a remote web services provider for processing and receiving a response from the remote web services provider with a cleaned version of the at least one item of information associated with the at least one contact. Providing a user interface on the mobile device for viewing the cleaned version of the at least one item of information and in response to a user selection of the cleaned version of the at least one item of information, updating the corresponding unclean item of information stored on the mobile device to the cleaned version of said item of information. | 02-13-2014 |
Dileep Sathyanarayana, Clifton Park, NY US
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20100162721 | APPARATUS FOR STARTING A STEAM TURBINE AGAINST RATED PRESSURE - An external steam turbine main steam startup control valve bypass loop is provided to facilitate a full pressure combined cycle rapid response/fast start powerplant. The main steam startup bypass control loop particularly includes a main steam startup bypass control valve, which allows for the implementation of high efficiency, low pressure drop main steam control valve that otherwise would not be able to handle the severe throttling duty during a full pressure steam turbine startup and enhances the controllability of the steam turbine allowing for the high fidelity controls necessary to minimize steam turbine rotor stresses. | 07-01-2010 |
20100305768 | CONTROL FOR IMPROVED THERMAL PERFORMANCE OF A STEAM TURBINE AT PARTIAL LOAD - A method controls at least a portion of a combined cycle power plant having at least one gas turbine, at least one heat recovery steam generator, and at least one steam turbine. The method includes developing an actual operating curve of a steam characteristic of the at least one heat recovery steam generator versus an amount of steam provided to the at least one steam turbine from the at least one heat recovery steam generator. The method also includes determining the steam characteristic of the at least one heat recovery steam generator at a point in time during operation of the combined cycle power plant. The method further includes providing an amount of the steam from the at least one heat recovery steam generator to the at least one steam turbine depending upon the determined steam characteristic of the at least one heat recovery steam generator at the point in time. | 12-02-2010 |
20110146276 | METHOD OF STARTING A STEAM TURBINE - The present invention has the technical effect of reducing the start-up time associated with starting a steam turbine. Embodiments of the present invention provide a new methodology for reducing the steam-to-metal temperature mismatch present during the start-up of a steam turbine. Essentially, embodiments of the invention may raise the pressure of the steam upstream of an admission valve associated with a High Pressure (HP) section of a steam turbine. The initial high pressure of the steam may reduce the enthalpy of steam, reducing temperature of the steam admitted to the HP section. | 06-23-2011 |
20120151918 | METHOD FOR OPERATING A TURBOMACHINE DURING A LOADING PROCESS - A method for increasing the operational flexibility of a turbomachine is provided. The turbomachine may include a first section, a second section, and a rotor disposed within the first section and the second section. The method may determine an allowable range of a physical parameter associated with the first section and/or the second section. The method may modulate a first valve and/or a second valve to allow steam flow into the first section and the second section respectively, wherein the modulation is based on the allowable range of the physical parameter. In addition, the physical parameter allows the method to independently apportion steam flow between the first section and the second section of the turbomachine, during the loading process. | 06-21-2012 |
20120151921 | METHOD FOR STARTING A TURBOMACHINE - A method for increasing the operational flexibility of a turbomachine during a startup phase is provided. The turbomachine may include a first section, a second section, and a rotor disposed within the first section and the second section. The method may determine an allowable range of a physical parameter associated with the first section and/or the second section. The method may modulate a first valve and/or a second valve to allow steam flow into the first section and the second section respectively, wherein the modulation is based on the allowable range of the physical parameter. In addition, the physical parameter allows the method to independently apportion steam flow between the first section and the second section of the turbomachine, during the startup phase. | 06-21-2012 |
20120151925 | METHOD AND SYSTEM FOR CONTROLLING A VALVE OF A TURBOMACHINE - A method and a system for limiting steam flow entering a steam turbine are provided. The method and system may intentionally unbalance the steam flow apportioned between sections of the steam turbine. The steam turbine comprises at least: a first section, a second section, and a rotor disposed within each section. The method may receive a speed/load command, or the like, which provides reference strokes for a first valve, associated with the first section; and a second valve, associated with the second section. The method may also determine an operational parameter that may limit the reference strokes relative to the speed/load command. The operational parameter may determine the allowable steam flow for each section of steam turbine, independent of the speed/load command. | 06-21-2012 |
20120156004 | METHOD FOR SHUTTING DOWN A TURBOMACHINE - A method for increasing the operational flexibility of a turbomachine during a shutdown phase is provided. The turbomachine may include a first section, a second section, and a rotor disposed within the first section and the second section. The method may determine an allowable range of a physical parameter associated with the first section and/or the second section. The method may modulate a first valve and/or a second valve to allow steam flow into the first section and the second section respectively, wherein the modulation is based on the allowable range of the physical parameter. In addition, the physical parameter allows the method to independently apportion steam flow between the first section and the second section of the turbomachine, during the shutdown phase. | 06-21-2012 |
Dileep Sathyanarayana, Schenectady, NY US
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20090048787 | METHODS AND SYSTEMS TO DEVELOP AN EXPERIENCE-BASED PROBABILISTIC LIFING PROCESS - A method of facilitating a probabilistic lifting process is provided. The method includes obtaining operational data for at least one turbine engine, defining a plurality of cool-down curves for the at least one turbine engine, identifying a plurality of different start types of the at least one turbine engine, and developing a formula for the at least one turbine engine. The method also includes determining an operating strategy and establishing a design useful life for the at least one turbine engine, developing at least one histogram and a probabilistic model using the operational data, and determining a mission mix for the operating strategy by performing a simulation of the probabilistic model combined with cyclic life expenditure data of the at least one turbine engine. | 02-19-2009 |
20120131917 | Methods and Systems for Loading a Steam Turbine - Systems and methods for loading a steam turbine are provided. A method may include: receiving a turbine loading factor; receiving a current steam turbine exhaust temperature; determining a steam flow ramping rate parameter and a steam temperature ramping rate parameter based at least in part on the turbine loading factor and the current steam turbine exhaust temperature, wherein the steam flow ramping rate parameter and the steam temperature ramping rate parameter are determined based at least in part on an inverse relationship between the steam flow ramping rate parameter and the steam temperature ramping rate parameter. The method may further include controlling at least one of: (a) steam flow to the steam turbine based at least in part on the steam flow ramping rate parameter; or (b) steam temperature to the steam turbine based at least in part on the steam temperature ramping rate parameter. | 05-31-2012 |
Krishnamu Jambur Sathyanarayana, Shannon IE
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20150331715 | RELIABLE AND DETERMINISTIC LIVE MIGRATION OF VIRTUAL MACHINES - Technologies for live virtual machine migration include a plurality of compute nodes and a datacenter manager. The datacenter manager issues a request to migrate a virtual machine to a source compute node. The request includes a service level requirement such as a maximum migration time or downtime. The source compute node determines platform resources required to perform migration within the service level requirement and reserves the platform resources for a predicted migration time. The source compute node transfers virtual machine state to a destination compute node and releases the platform resources after the transfer is complete. The source compute node may use a hardware resource monitor or reservation manager to determine available platform resources and reserve the platform resources for exclusive use. If sufficient platform resources are not available, the source compute node may negotiate reduced service level requirements with the datacenter manager. Other embodiments are described and claimed. | 11-19-2015 |
Ram Prasad Melahalli Sathyanarayana, Valrico, FL US
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20120261338 | METHODS AND APPARATUS FOR STRUVITE RECOVERY USING UPSTREAM PHOSPHATE INJECTION - Formation of scale in a wastewater treatment system upstream of a struvite precipitation reactor is inhibited by injection of one or more of CO | 10-18-2012 |
20150017085 | REACTOR APPARATUS AND METHODS FOR FINES CONTROL - Methods and apparatus for precipitating dissolved materials from a solution involve reduction of fines. In an embodiment, the method comprises: introducing a solution into a reactor, causing the dissolved materials in the solution to precipitate into crystals under a first reaction condition, adjusting the reaction condition from the first reaction condition to a second reaction condition, maintaining the reaction condition in the second reaction condition to cause a sub-population of the crystals to dissolve, and adjusting the reaction condition from the second reaction condition to the first reaction condition. In an embodiment, the apparatus comprises a reaction tank, a recycling path and at least an acid injector which is configured for dosing an acid into solution flow in the recycling path. | 01-15-2015 |
Ram Prasad Melahalli Sathyanarayana, Vancouver CA
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20130062289 | TREATMENT OF PHOSPHATE-CONTAINING WASTEWATER - A method for treating, and recovering phosphate compounds from, phosphate-containing wastewater. The method includes the steps of: (a) removing fluoride from the wastewater; (b) recovering a phosphate compound from the wastewater by maintaining super saturation conditions for the phosphate compound; and (c) polishing the wastewater. A silica removal step may be optionally performed after step (a) and before step (b). | 03-14-2013 |
20140231359 | TREATMENT OF PHOSPHATE-CONTAINING WASTEWATER WITH FLUOROSILICATE AND PHOSPHATE RECOVERY - A method for treating phosphate-containing wastewater, such as phosphogypsum pond water. The method includes the steps of: (a) adding a first cation to the wastewater to precipitate fluorosilicate from the wastewater; (b) adding a second cation to the wastewater to precipitate fluoride from the wastewater; (c) raising the pH of the wastewater to precipitate the second cation from the wastewater; (d) removing residual silica from the wastewater; and (e) precipitating phosphate from the wastewater. The precipitated fluorosilicate may be sodium fluorosilicate. The precipitated phosphate may be struvite. | 08-21-2014 |
Sreenivas Sathyanarayana, Austin, TX US
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20090150788 | System and Method for Configuring Enterprise Information Handling System Storage Solutions - Enterprise information handling system storage solutions are configured automatically through a graphical user interface that accepts storage device and storage topology selections from an end user to automatically present a graphical image depicting interconnection devices that interface the storage devices. For example, cables with a color selected by the end user are depicted interfacing storage devices with the selected color. In one embodiment, switches are automatically selected and depicted for the storage devices and storage topology selected by the end user. | 06-11-2009 |
20090187643 | System and Method for Configuring Networked Enterprise Information Handling System Solutions From a Product and Options Template - Networked enterprise information handling system solutions are configured by reference to a components template having plural components, each component having one or more associated attributes, such as in an XML structure. A selector interface provides end user access to the component template to accept end user inputs for products and constraints. A configuration engine applies selected products and constraints to products and constraints of the component template to automatically generate an enterprise solution of networked information handling systems. | 07-23-2009 |
20090240713 | System and Method for Validating Enterprise Information Handling System Network Solutions - Enterprise information handling system network solutions are automatically validated within each information handling system, between connected information handling systems and to logical groupings within the solution and to the solution as a whole. A validation engine applies validation rules to determine a network solution topology to validate end user information handling system component selections. Invalid information handling system component selections are automatically corrected, disabled or hidden to ensure that end users select valid configurations. | 09-24-2009 |
Ubaradka Sathyanarayana, Tucson, AZ US
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20120220672 | Presence of ERG Gene Rearrangements and Protein Over-expression in Low Grade PIN (LG-PIN) in Prostate Biopsies - The present disclosure relates to methods for the early detection of ERG over-expression, gene rearrangements, and diagnosis and/or prognosis of prostate cancer using a combined ERG IHC-FISH assay. | 08-30-2012 |