Abstract: A method for performing electrophoretic separation of ionic compounds which involves varying a bulk fluid flow though a separation path into which ionic species are continuously introduced and separated. The method can also include the introduction of a leading electrolyte into the separation path to form an ionic interface with the sample and an optional terminating electrolyte to enrich ionic species for higher detection resolution.

Abstract: Systems and methods for optimizing paging cycles in a wireless communication system are disclosed. An access terminal can include logic configured to determine an optimal paging cycle and logic configured to set the paging cycle based on the optimal paging cycle, where the paging cycle varies based on at least one optimizing metric.

Abstract: A method and device are provided for affinity gradient focusing for directing at least one analyte in a solution containing a pseudostationary phase and located in a channel such as a capillary or a microchannel. The method includes establishing a steady-state spatial gradient in a retention factor of the pseudostationary phase for the at least one analyte. The analyte is caused to be moved within the channel whereby the concentration of the at least one analyte changes at one or more positions along the gradient. The pseudostationary phase is charged and the analyte is either neutral or charged or alternatively, the pseudostationary phase is neutral and the analyte is charged. The device may include a fluid channel, a pseudostationary phase having a retention factor gradient, an electrical current source and a pump system for establishing the bulk flow in the solution in the channel.

Abstract: A microfluidic apparatus and method for performing electrophoretic separation of compounds. The apparatus comprises: a) A first container for containing a sample fluid; b) a second container for containing a separation buffer fluid; c) a channel of a first length having an inlet end and an outlet end, the inlet end connected to the first container and the outlet end connected to the second container; d) a voltage device electrically connected to the first container and the second container, the voltage device facilitating adjustment of the amount of voltage to the first container and the second container; e) a controller for controlling the velocity flow of the sample fluid through the channel from the first container towards the second container; and f) a measuring device for measuring the current through the channel.

Abstract: Disclosed is an apparatus and method for the mixing of two microfluidic channels wherein several wells are oriented diagonally across the width of a mixing channel. The device effectively mixes the confluent streams with electrokinetic flow, and to a lesser degree, with pressure driven flow. The device and method may be further adapted to split a pair of confluent streams into two or more streams of equal or non-equal concentrations of reactants. Further, under electrokinetic flow, the surfaces of said wells may be specially coated so that the differing electroosmotic mobility between the surfaces of the wells and the surfaces of the channel may increase the mixing efficiency. The device and method are applicable to the steady state mixing as well as the dynamic application of mixing a plug of reagent with a confluent stream.

Abstract: Systems and methods for performing chromatography separations or analyses are disclosed. The methods are based upon an equilibrium gradient focusing mode in contrast to conventional transient migration-based modes. By matching the migration speed of one or more analyte(s) of interest to the wave speed of a thermal gradient induced to travel along a region in which chromatographic partitioning occurs, significant improvements in detection limits are achieved. In particular, a temperature gradient focusing strategy is described in which analyte(s) of interest are circulated around a continuous chromatography system in order to focus the analyte(s). Also described are various devices and systems that can be used in the methods described herein.

Abstract: In an embodiment, an originating communication device within a wireless communications system sends a call request to a server to initiate a communication session with a target communication device, and also sends, along with the call request, a session description request, the session description request requesting alerting data to be sent to the target communication device from the server in addition to a call announce message for announcing the communication session to the at least one target communication device, the alerting data describing a nature of the communication session. The server sends the call announce message and the alerting data to the target communication device. The target communication device receives the call announce message and the alerting data, notifies a user of the target communication device of the announced communication session and outputs the alerting data to the user of the target communication device in conjunction with the notification.

Abstract: A system, method, and computer program for collecting end-user opinions of applications and data in a wireless communications network. The system identifies the end-user who has downloaded software applications and/or data to a wireless device and collects end-user opinion preferably through the transmission of a targeted questionnaire to the wireless device.

Abstract: A method and device are provided for concentrating and separating materials in fluids within a fluidic device having a fluid conduit such as a channel or capillary. The concentration is achieved by balancing the electrophoretic velocity of a material against the bulk flow of fluid in the presence of a temperature gradient. An additive is added to the fluid which interacts with the material and which modifies the normal electrophoretic mobility of the material. Using an appropriate fluid, the temperature gradient can generate a corresponding gradient in the electrophoretic velocity so that the electrophoretic and bulk velocities sum to zero at a unique position along the conduit and the material will be focused at that position. The method and device may be adapted for use with a variety of materials including fluorescent dyes, amino acids, proteins, DNA and to concentrate a dilute material.

Abstract: A method is provided for observing mixing interactions and reactions of two materials in a fluid. The method in one form provides for concentrating by balancing electrophoretic velocities of a material against the bulk flow of fluid in the presence of a temperature gradient. Using an appropriate fluid, the temperature gradient can generate a corresponding gradient in the electrophoretic velocity of the material so that the electrophoretic and bulk velocities sum to zero at a unique position and the material will be focused at that position. A second material can then be introduced into the fluid and allowed to move through and interact with the focused band of the first material. Products of the interaction can then be detected as they are focused at a different position along the gradient. The method can be adapted to study the temperature dependence of the molecular interaction.

Abstract: Disclosed is an apparatus and method for the mixing of two microfluidic channels wherein several wells are oriented diagonally across the width of a mixing channel. The device effectively mixes the confluent streams with electrokinetic flow, and to a lesser degree, with pressure driven flow. The device and method may be further adapted to split a pair of confluent streams into two or more streams of equal or non-equal concentrations of reactants. Further, under electrokinetic flow, the surfaces of said wells may be specially coated so that the differing electroosmotic mobility between the surfaces of the wells and the surfaces of the channel may increase the mixing efficiency. The device and method are applicable to the steady state mixing as well as the dynamic application of mixing a plug of reagent with a confluent stream.

Abstract: A system, method, and program for remotely interacting with a diagnostic interface resident on wireless computer devices. The wireless device provides an accessible diagnostic interface that allows reads and/or writes to device resident diagnostic data and tools. Through use of the interaction, wireless device status data and network status data can be gathered and utilized, and if so embodied, the diagnostic tools resident on the wireless devices can be manipulated to alter wireless device operation.

Abstract: A system, method, and program for optimizing a wireless network having at least data communication between computer devices selectively connected thereto, and at least one of the computer devices is a remotely located wireless device. The wireless device has a resident network optimization application that causes the selective transmission of network status data to at least one other computer device on the wireless network, and either the data-receiving computer device or another computer device on the wireless network optimizes the wireless network based upon the received network status data.

Abstract: A data manager, and a method of managing data, for a wireless device. The data manager includes a data receiver that receives voice data over the internet protocol connection, a data sender that sends other voice data over the internet protocol connection, a data recognizer that differentiates the voice data and the other voice data from non-voice data and non-data, and a controller that broadcasts the voice data and the other voice data in an internet voice protocol format. The method includes the steps of receiving voice data over the internet protocol connection at the wireless device, sending other voice data over the internet protocol connection from the wireless device, differentiating the voice data from non-voice data and non-data, differentiating the other voice data from other non-voice data and non-data, and controlling the broadcast of the voice data, and the other voice data.

Abstract: Software for use on a client device that is configured for communications via a communications network instantiates a communications function that effects an advertisement download communication link between the client device and an advertisement distribution server system via the communications network, at selected advertisement download times, an advertisement download function that downloads advertisements identified in a playlist(s) generated by at least one playlist server, via the advertisement download communication link, at the selected advertisement download times, an advertisement storage function for storing the downloaded advertisements on a storage medium associated with the client device, and an advertisement display function that effects display of at least selected ones of the stored advertisements.

Abstract: A method is described for modifying performed channels fabricated in a variety of substrate materials including PMMA. The method involves exposing a portion of a fluid flow channel to light at a fluence and wavelength which modifies the surface charge of the substrate at the exposure site. The method can be used to modulate electroosmotic flow in channels or to immobilize chemical compounds or biological species in the fluid flow channels at the modified surfaces.

Abstract: A wireless telephone (302) digitizes the voice of the user in response to the depression of a push-to-talk button (110), either physical or virtual. It sends the digitized voice, in data mode, to a base station (308). The base station places the data, through the Internet, or an Intranet or Extranet, on a server (312). Other wireless phones (304)-(306) recover the data from the server through the same (308) or different (310) base station, through the Internet, Intranet, or Extranet, and convert the data back to digitized voice. The base stations transmit the digitized voice to other wireless telephones (306), which convert them back to voice in response to the recognition of voice frames on the data channel by the CODEC manager software. Networked computers (314) may be configured to emulate a combined base station and wireless telephone.

Abstract: Disclosed is an apparatus and method for the mixing of two microfluidic channels wherein several wells are oriented diagonally across the width of a mixing channel. The device effectively mixes the confluent streams with electrokinetic flow, and to a lesser degree, with pressure driven flow. The device and method may be further adapted to split a pair of confluent streams into two or more streams of equal or non-equal concentrations of reactants. Further, under electrokinetic flow, the surfaces of said wells may be specially coated so that the differing electroosmotic mobility between the surfaces of the wells and the surfaces of the channel may increase the mixing efficiency. The device and method are applicable to the steady state mixing as well as the dynamic application of mixing a plug of reagent with a confluent stream.

Abstract: Software for use on a client device that is configured for communications with at least one remote source of advertisements via a communications network instantiates an advertisement download function that downloads advertisements from the at least one remote source, during one or more advertisement download sessions, an advertisement storage function that stores the downloaded advertisements on a storage medium associated with the client device, an advertisement display function that effects display of at least selected ones of the stored advertisements on a display associated with the client device, an obscured ad monitor function that determines whether an obscured ad condition has occurred, whereby the obscured ad condition occurs when an advertisement currently being displayed on the display associated with the client device is being obscured by one or more other items currently being displayed on the display, and an obscured ad nag function that generates an obscured ad nag display in response to detect

Abstract: A method and device are provided for affinity gradient focusing for directing at least one analyte in a solution containing a pseudostationary phase and located in a channel such as a capillary or a microchannel. The method includes establishing a steady-state spatial gradient in a retention factor of the pseudostationary phase for the at least one analyte. The analyte is caused to be moved within the channel whereby the concentration of the at least one analyte changes at one or more positions along the gradient. The pseudostationary phase is charged and the analyte is either neutral or charged or alternatively, the pseudostationary phase is neutral and the analyte is charged. The device may include a fluid channel, a pseudostationary phase having a retention factor gradient, an electrical current source and a pump system for establishing the bulk flow in the solution in the channel.