Abstract: Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts of formula (I) and a crystalline form of potassium 2,5 2,5-dihydroxybenzenesulfonic acid are provided.

Abstract: A self-calibrating powered air purifying respirator (PAPR). The PAPR comprises an electric motor mechanically coupled to a blower; an air flow sensor, and a controller coupled to the air flow sensor and to the electric motor. The controller is configured to automatically execute a one-time self-calibration by driving the electric motor to a predefined operation point, receiving an indication from the air flow sensor, determining a reference parameter based on the indication from the air flow sensor, and storing the reference parameter, wherein after completion of the one-time self-calibration the controller controls the electric motor based on the stored reference parameter.

Abstract: A system, a non-transitory machine-readable storage medium storing instructions, and a computer-implemented method to provide efficient game access is described. A request to access a first game using a first primary identifier is received. An internal identifier and a game identifier associated with the first primary identifier are accessed. A request to access a second game using a second primary identifier is received. An internal identifier and a game identifier associated with the second primary identifier are accessed. A determination that the first and second primary identifiers are associated with a particular player is made. An association between the internal identifiers is stored.

Abstract: A beverage cup compactor includes a garbage bin lid that has a central hole and a plurality of additional holes. A plurality of pipes are placed in the plurality of holes. Each pipe has an extended top sized so that the extended top rests on a top of the garbage bin lid.

Abstract: A voltage regulator circuit and a method for operating the voltage regulator circuit are described. In one embodiment, a voltage regulator circuit includes an input terminal to receive an input signal from a power interface, an output terminal to output an output signal using the input signal, an output voltage monitor circuit configured to compare the voltage of the output signal with a predetermined voltage threshold, and a current limit circuit configured to limit current flowing on a path from the input terminal to the output terminal to a transient current limit level. The transient current limit level is lower than a predefined current limit threshold of the power interface. Other embodiments are also described.

Abstract: Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts of formula (I) and a crystalline form of potassium 2,5 2,5-dihydroxybenzenesulfonic acid are provided.

Abstract: Aspects are directed to low dropout regulation. In accordance with one or more embodiments, an apparatus includes a charge pump that generates an output using a reference voltage, a low dropout (LDO) regulator circuit, current-limit and a voltage-limit circuit. The LDO circuit includes an amplifier powered by the charge pump and that provides an LDO voltage output. The voltage-limit circuit includes a transistor coupled between a voltage supply line and the LDO regulator circuit and a gate driven by the charge pump. The voltage-limit circuit limits voltage coupled between the voltage supply line and the LDO regulator circuit based upon the output of the charge pump, such as by coupling the voltage at the voltage supply line via source/drain connection of the transistor under low-voltage conditions, and providing a limited voltage to the LDO regulator circuit under high voltage conditions on the voltage supply line.

Abstract: Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts of formula (I) and a crystalline form of potassium 2,5 2,5-dihydroxybenzenesulfonic acid are provided.

Abstract: Various aspects of the disclosure are directed to methods and apparatuses involving providing a clock signal. As consistent with one or more embodiments herein, a sawtooth waveform signal is generated in a manner that facilitates low power operation. In some implementations, the sawtooth waveform signal is generated using an oscillator that operates without necessarily employing R-C circuits and/or without rail-to-rail voltage supply, such as via a nonlinear oscillator. The sawtooth waveform signal is used to generate a trapezoidal waveform signal, and a clock signal is generated using the trapeziodal waveform signal.

Abstract: An L-type zeolite, a modified L-type zeolite, or any combination thereof may be useful in catalytically preparing ?,?-unsaturated carboxylic acids and/or esters thereof through reaction pathways that include dehydroxylation reactions and optionally esterification reactions. In some reaction pathways, dehydroxylation reactions and esterification reactions may be performed sequentially or concurrently.

Abstract: Low voltage circuits are protected from high voltage/current conditions, as may be implemented in accordance with one or more example embodiments. An additional/secondary shunt circuit/switch is implemented to shunt additional current as supply voltage steps or otherwise increases. In some implementations, the secondary shunt circuit includes a transistor having its drain coupled to its gate via a large capacitance that operates to maintain the gate voltage at about a constant level. This operates to facilitate the draining of additional current, and maintaining a low bandgap voltage supply level.

Abstract: Aspects are directed to low dropout regulation. In accordance with one or more embodiments, an apparatus includes a charge pump that generates an output using a reference voltage, a low dropout (LDO) regulator circuit, current-limit and a voltage-limit circuit. The LDO circuit includes an amplifier powered by the charge pump and that provides an LDO voltage output. The voltage-limit circuit includes a transistor coupled between a voltage supply line and the LDO regulator circuit and a gate driven by the charge pump. The voltage-limit circuit limits voltage coupled between the voltage supply line and the LDO regulator circuit based upon the output of the charge pump, such as by coupling the voltage at the voltage supply line via source/drain connection of the transistor under low-voltage conditions, and by providing a limited voltage to the LDO regulator circuit under high voltage conditions on the voltage supply line.

Abstract: Low voltage circuits are protected from high voltage/current conditions, as may be implemented in accordance with one or more example embodiments. An additional/secondary shunt circuit/switch is implemented to shunt additional current as supply voltage steps or otherwise increases. In some implementations, the secondary shunt circuit includes a transistor having its drain coupled to its gate via a large capacitance that operates to maintain the gate voltage at about a constant level. This operates to facilitate the draining of additional current, and maintaining a low bandgap voltage supply level.

Abstract: A mobile ad hoc network (MANET) device is provided. The device has an architecture comprising a Bluetooth adaptation layer for wireless communication according to a Bluetooth convention, a MANET service layer, a scatternet module, a routing module, and a flow control manager in the MANET service layer. The scatternet module and the routing module are in communication with the MANET service layer. The MANET service layer is independent of the topology protocol of the scatternet module and independent of a routing rules of the routing module.

Abstract: A voltage regulator circuit and a method for operating the voltage regulator circuit are described. In one embodiment, a voltage regulator circuit includes an input terminal to receive an input signal from a power interface, an output terminal to output an output signal using the input signal, an output voltage monitor circuit configured to compare the voltage of the output signal with a predetermined voltage threshold, and a current limit circuit configured to limit current flowing on a path from the input terminal to the output terminal to a transient current limit level. The transient current limit level is lower than a predefined current limit threshold of the power interface. Other embodiments are also described.

Abstract: Control processes are managed within an organization, the organization including a plurality of divisions, by receiving process data provided from a first local user associated with a first division of the organization, the first local user providing the data via a first user interface, and the data defining one or more processes associated with the first division. The process data is stored in a database to be associated with the first division. The stored process data is provided to a second local user, associated with a second division of the organization, for selection of a process associated with the first division. The selection of the second user is received and stored in the database as further being associated with the second division.

Abstract: A document reading apparatus includes a housing including a bottom surface formed with a reading opening for reading a document, position detection sections disposed on the bottom surface while interposing the reading opening therebetween to detect a position of the document reading apparatus, and foot sections each having a contact surface being in contact with the document and a detection opening formed in a part of the contact surface, the detection opening facing the position detection section on the bottom surface.

Abstract: A system, method, and computer readable medium using a hierarchical multicast protocol in a mobile ad-hoc network, comprises identifying a parent node, determining a sub-group node in communication with the parent node, determining a maximum number of host nodes in communication with the sub-group node, determining an address of the parent node based upon the determined sub-group node and the determined maximum number of host nodes, setting an address of the sub-group node based upon the determined address of the parent node, and applying a host node address to at least one of the host nodes based upon the set sub-group node address.

Abstract: This invention relates to catalytic dehydration of lactic acid derived from biological fermentation and its esters into acrylic acid and acrylic acid esters respectively. Disclosed in this invention are chemical catalysts suitable for industrial scale production of acrylic acid and acrylic acid esters. This invention also provides an industrial scale integrated process technology for producing acrylic acid and acrylic acid esters from biological fermentation using renewable resources and biological catalysts.

Abstract: A probe assembly of a sensor is arranged in an airflow channel. A first probe of the assembly has an inlet. The inlet is at a first point in the airflow channel. A second probe of the assembly has an inlet. The inlet is in fluid communication with the airflow channel. The second probe inlet is closer to a surface defining a perimeter of the channel than is the first probe inlet.