Abstract: A drive system includes a carrying device with a wearable carrying frame, an energy store carried by the carrying frame, and at least one electric drive motor carried by the carrying frame. A coupling device is configured to mechanically couple a work apparatus to the drive system. The carrying device is formed as a shoulder bag or backpack, having at least one strap that permits the carrying device to be worn over a shoulder of a user. Two straps may be provided that permit the carrying device to be worn over both shoulders of a user. Also disclosed is a tool having such a drive system and a work apparatus, which may be concrete vibrator.

Abstract: The invention relates in particular to a process for the preparation of a compound of formula (I) wherein R1 and R2 are as defined in the description and in the claims.

Abstract: The present disclosure relates to an integrated circuit with at least a first channel and a second channel. Each channel includes at least a DAC. The integrated circuit also includes a number of circuit elements interconnected between the channels. The circuit elements can be changed between a short circuit state and an open circuit state. Normally, each channel will operate independently of one another, using only the circuit components in its respective channel. However, the circuit elements are arranged to allow a user to combine part of the second channel with the first channel to improve the functionality and performance of the first channel. In particular, a state of the circuit elements can be chosen to combine components of the second channel with the first channel. For example, components (e.g. a sub-stage) of the second channel can be connected in parallel with corresponding components (e.g. a corresponding sub-stage) of the first channel.

Abstract: A burner includes a main body having an outer surface and at least partially defining an interior. The main body further includes an upstream end axially spaced from a downstream end. The outer surface includes a burner front face at the downstream end of the main body. An annular cooling air plenum is defined in the main body radially inwardly from the outer surface. A cooling air passage extends from the outer surface to the annular cooling air plenum. A plurality of cooling channels is circumferentially spaced apart from one another along the burner front face. Each cooling channel of the plurality of cooling channels extends from a respective inlet in fluid communication with the annular cooling air plenum to a respective outlet.

Abstract: A burner includes a main body having an outer surface and at least partially defining an interior. The main body further includes an upstream end axially spaced from a downstream end. The outer surface includes a burner front face at the downstream end of the main body. An annular cooling air plenum is defined in the main body radially inwardly from the outer surface. A cooling air passage extends from the outer surface to the annular cooling air plenum. A plurality of cooling channels is circumferentially spaced apart from one another along the burner front face. Each cooling channel of the plurality of cooling channels extends from a respective inlet in fluid communication with the annular cooling air plenum to a respective outlet.

Abstract: A method for increasing interaction speed between a website and a client device includes storing on an HTML5 local storage database on the client an ECMAScript file and a parameter from a web server of the website, and subsequently comparing a web server version number of the ECMAScript from the web server with the local version number of the parameter stored on the HTML5 local storage database. The parameter specifies a local version number of the ECMAScript file. The method can also include updating the ECMAScript stored on the HTML5 local storage database with the ECMAScript file from the web server when the web server version number is greater than the local version number. The method can also include loading the website on the client by retrieving the ECMAScript file from the HTML5 local storage database. Retrieving the ECMAScript file from the HTML5 local storage database can occur when the web server version number is the same as the local version number.

Abstract: The present invention relates to a process for preparing an isocyanate by reacting a primary amine with phosgene, comprising I) providing an amine solution, II) providing a phosgene solution, III) mixing the amine solution with the phosgene solution in a mixing unit, followed by IV) further conversion in an adiabatically operated reaction zone and the removing of the gas phase formed as a result of the chemical reaction in a separation zone, V) expanding the remaining liquid phase in two or three stages, VI) further conversion of the liquid phase remaining after the last expansion stage in an indirectly heated reaction zone and VII) isolating the isocyanate from the reaction solution obtained therein.

Abstract: A process for preparing an isocyanate by reacting a primary amine with phosgene. The process includes providing an amine solution and adjusting its temperature in a heat exchanger, providing a phosgene solution and adjusting its temperature in a heat exchanger, mixing the amine solution with the phosgene solution, further conversion in an adiabatically operated reaction zone and the removing of the gas phase formed as a result of the chemical reaction in a separation zone, expanding the remaining liquid phase, further conversion of the liquid phase remaining after expansion in an indirectly heated reaction zone, and isolating the isocyanate from the obtained reaction solution. The temperature in the reaction zone and the temperature in the separation zone is adjusted by fixing a target value of 110° C. to 145° C.

Abstract: The invention relates to an improved process for making available the coproduct hydrogen chloride obtained in the preparation of an isocyanate by phosgenation of the corresponding amine for a desired subsequent use (i.e.

Abstract: The present invention relates to a process for preparing an isocyanate by reacting a primary amine with phosgene, comprising I) providing an amine solution, II) providing a phosgene solution, III) mixing the amine solution with the phosgene solution in a mixing unit, followed by IV) further conversion in an adiabatically operated reaction zone and the removing of the gas phase formed as a result of the chemical reaction in a separation zone, V) expanding the remaining liquid phase in two or three stages, VI) further conversion of the liquid phase remaining after the last expansion stage in an indirectly heated reaction zone and VII) isolating the isocyanate from the reaction solution obtained therein.

Abstract: The present invention relates to a process for preparing an isocyanate by reacting a primary amine with phosgene, comprising I) providing an amine solution and adjusting its temperature in a heat exchanger, II) providing a phosgene solution and adjusting its temperature in a heat exchanger, III) mixing the amine solution with the phosgene solution in a mixing unit, followed by IV) further conversion in an adiabatically operated reaction zone and the removing of the gas phase formed as a result of the chemical reaction in a separation zone, V) expanding the remaining liquid phase, VI) further conversion of the liquid phase remaining after expansion in an indirectly heated reaction zone and VII) isolating the isocyanate from the reaction solution obtained therein, in which the temperature in the reaction zone and separation zone is adjusted by fixing a target value within a range from 110° C. to 145° C.

Abstract: An analog multiplexer may be used for sampling an input voltage that is capable of having a higher voltage level than an upper supply voltage. The analog multiplexer includes a plurality of input switch circuits and a shorting switch circuit. The plurality of input switch circuits include n-type or p-type laterally diffused field effect transistors (NLDFETs or PLDFETs). At least one of the input switch circuits includes a level shifting switch circuit that is able to sample an input voltage that is greater than the upper supply voltage for the multiplexer. A shorting switch circuit, at an output of the multiplexer, includes a capacitively coupled gate drive circuit and is configured to short a first differential output to a second differential output after the input voltage is sampled.

Abstract: A method for increasing interaction speed between a website and a client device includes storing on an HTML5 local storage database on the client an ECMAScript file and a parameter from a web server of the website, and subsequently comparing a web server version number of the ECMAScript from the web server with the local version number of the parameter stored on the HTML5 local storage database. The parameter specifies a local version number of the ECMAScript file. The method can also include updating the ECMAScript stored on the HTML5 local storage database with the ECMAScript file from the web server when the web server version number is greater than the local version number. The method can also include loading the website on the client by retrieving the ECMAScript file from the HTML5 local storage database. Retrieving the ECMAScript file from the HTML5 local storage database can occur when the web server version number is the same as the local version number.

Abstract: The present invention relates to a continuous process for preparing a polyisocyanate, in which a polyamine and phosgene are first converted predominantly to carbamoyl chloride and amine hydrochloride and only in minor proportions to polyisocyanate, and a portion of the carbamoyl chloride- and amine hydrochloride-containing reaction mixture thus obtained is recycled into the reaction with phosgene, wherein polyamine, phosgene and the carbamoyl chloride- and amine hydrochloride-containing reaction mixture are mixed intimately in a mixing unit. The portion of the carbamoyl chloride- and amine hydrochloride-containing reaction mixture which is not recycled into the phosgenation is worked up to give the polyisocyanate.

Abstract: The invention relates to an improved process for making available the coproduct hydrogen chloride obtained in the preparation of an isocyanate by phosgenation of the corresponding amine for a desired subsequent use (i.e.

Abstract: The present invention relates to a continuous process for preparing a polyisocyanate, in which a polyamine and phosgene are first converted predominantly to carbamoyl chloride and amine hydrochloride and only in minor proportions to polyisocyanate, and a portion of the carbamoyl chloride- and amine hydrochloride-containing reaction mixture thus obtained is recycled into the reaction with phosgene, wherein polyamine, phosgene and the carbamoyl chloride- and amine hydrochloride-containing reaction mixture are mixed intimately in a mixing unit. The portion of the carbamoyl chloride- and amine hydrochloride-containing reaction mixture which is not recycled into the phosgenation is worked up to give the polyisocyanate.

Abstract: An analog multiplexer may be used for sampling an input voltage that is capable of having a higher voltage level than an upper supply voltage. The analog multiplexer includes a plurality of input switch circuits and a shorting switch circuit. The plurality of input switch circuits include n-type or p-type laterally diffused field effect transistors (NLDFETs or PLDFETs). At least one of the input switch circuits includes a level shifting switch circuit that is able to sample an input voltage that is greater than the upper supply voltage for the multiplexer. A shorting switch circuit, at an output of the multiplexer, includes a capacitively coupled gate drive circuit and is configured to short a first differential output to a second differential output after the input voltage is sampled.

Abstract: Embodiments of the present invention may provide a method of measuring an unknown capacitance of a device. The method may comprise the steps of driving a test signal to a circuit system that includes a current divider formed by the device with unknown capacitance and a reference capacitor; mirroring a current developed in the reference capacitor to a second circuit system that includes a measurement impedance; measuring a voltage within the second circuit system; and deriving a capacitance of the unknown capacitance based on the measured voltage with reference to a capacitance of the reference capacitor and the measurement impedance.

Abstract: An intellectual property valuation system, for use by a seller to generate an automated price for an item of intellectual property, includes a host device, at least one seller-controlled pricing parameter, and a database. The host device includes (i) a seller zone that is selectively accessible by the seller, and (ii) a control system including a processor that generates the seller zone. The at least one seller-controlled pricing parameter is related to the item of intellectual property and is inputted into the seller zone. The control system receives the at least one seller-controlled pricing parameter from the seller zone and generates a seller-controlled pricing matrix for the item of intellectual property that is based at least in part on the at least one seller-controlled pricing parameter. The database is in communication with the control system, and the seller-controlled pricing matrix is transmitted to and stored within the database.

Abstract: In order to save energy, it is proposed that parts of a signaling system be switched off, for example, by an operating system. The computers to be switched off store data which are relevant to railway safety, preferably on a central storage medium, for example, an NAS hard drive. When they have been reactivated, the computers read the safety-relevant data and operation can continue. This solution also enables computers which work with data relevant to railway safety to be switched to an energy-saving mode without endangering the safety of the railway.