Abstract: An arm module includes a housing with a first connection side controllably rotatable relative to a second connection side, about an axis of rotation. The first connection side has a rotatable first connection device. The second connection side has a second connection device fixed to the housing, with a rotation-compatible data transmission device for transmitting data signals along at least one transmission path between the first and second connection sides. The transmission path includes at least one wireless transmission sub-path for wireless transmission of data signals, and at least one wire-guided transmission sub-path for wire-guided transmission of data signals. The rotation-compatible data transmission device includes at least one first wireless transmission unit and at least one second wireless transmission unit, interconnected via the transmission path and arranged to wirelessly transmit and receive data signals along the wireless transmission sub-path.

Abstract: An ion exchange resin for use as a stationary phase in an ion chromatography column. The ion exchange resin has a negatively charged substrate particle, a positively charged polymer layer bound to the negatively charged substrate particle, a linker, and an ion exchange group. The ion exchange group includes a sulfonamide group and an amine, in which the ion exchange group is coupled to the positively charged polymer layer via the linker. When the sulfonamide is in a neutral form, a positively charged amine group provides retention; while when the sulfonamide is in an anionic form, the sulfonamide anion becomes a counter ion to the positively charged amine group, forming a zwitterion that reduces retention at that site. Accordingly, the retention time is able to be controlled by adjusting the mobile phase pH.

Abstract: A computer-readable storage medium may include executable instructions stored thereon that, when executed by a processor, may be configured to establish a connection to a node of a distributed ledger network that maintains a distributed ledger. The processor may obtain a first dataset from a first user, perform pre-processing on the first dataset to obtain a first data asset based on the first dataset, and store the first data asset. The processor may calculate a first value for the first data asset and generate a first data proposition based on the first data asset. The processor may obtain acceptance data from a second user, which may include data indicating acceptance by the second user of the first data proposition. The processor may transmit a first distributed ledger record to the node of the distributed ledger network.

Abstract: A chromatographic media for separating bio-polymers, the chromatographic media having cationic exchange properties and anionic exchange properties, the chromatographic media comprising: (a) non-porous substrate particles including an organic polymer, the substrate particles having a neutral hydrophilic layer at a surface of the non-porous substrate particles, in which the neutral hydrophilic layer is configured to reduce a binding of the bio-polymers directly to the non-porous substrate particles compared to a binding of the bio-polymer to the non-porous substrate particles without the neutral hydrophilic layer; (b) a charged first ion exchange layer bound to the substrate particles on top of the hydrophilic layer, the first ion exchange layer comprising first ion exchange groups; and (c) a charged second ion exchange layer bound to the substrate particles on top of the first ion exchange layer.

Abstract: Systems and methods for inhibiting translocation of ions across ion exchange barriers include an eluent generator having an ion source reservoir with a first electrode, an eluent generation chamber with a second electrode, an ion exchange barrier disposed therebetween, and means for reversing the polarity of a voltage or current applied across the first and second electrodes. A first polarity voltage or current applied across the electrodes generates an electric field that promotes translocation of eluent counter ions from the reservoir across the barrier, where the counter ions combine with eluent ions electrolytically generated in the chamber. By reversing the polarity of the voltage or current across the electrodes, the resulting electric field inhibits translocation of counter ions across the barrier from the reservoir into the chamber. Reverse voltage or current bias reduces counter ion concentration in the resting chamber to prevent exhaustion of ion suppressor capacity during start up.

Abstract: A vial cap for removing a matrix component from a liquid sample is described. The vial cap includes a cap body, an inlet portion, and an outlet portion. The cap body is configured to have a slidable gas and liquid seal with a side wall of a sample vial. The inlet portion includes a counterbore section that holds a filter plug. The filter plug includes a polyethylene resin and a material selected from the group consisting of an ion exchange material and a reversed-phase material. The vial cap is adapted for solid phase extraction for use in an autosampler with a plurality of sample vials.

Abstract: A method for making modified latex particles, wherein the particles comprise condensation polymers bonded to functional groups on the latex particles and the method for forming the condensation polymer comprises reacting the amino groups present on the latex particles with (i) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex, or (ii) at least a first polyfunctional compound, having at least two functional moieties reactive with said functional groups of the latex and at least a first amine compound, comprising amino groups selected from the group consisting of ammonia, a primary and a secondary amine to form a first condensation polymer reaction product comprising ion exchanging sites and a first unreacted excess of functional moieties.

Abstract: A pH gradient mobile phase preparation kit is described. The preparation kit includes a first component and a second component. The first component includes a first reagent separate from a second reagent. The first reagent, the second reagent, and a solvent together provide a volatile buffer solution having a low pH. The second component includes a base. The base mixed in the solvent provide a volatile base solution having a high pH. A method of separating and detecting one or more analytes comprised in a matrix of components in a sample, using the kit is also described.

Abstract: An electrochemical cell comprises a chamber, an inlet port, an outlet port, an electrode port, and a counter electrode. The inlet port is configured to allow flow of a liquid into the chamber and through an inlet opening toward the working electrode, and the outlet port is configured to allow flow of a liquid out of the chamber and through an outlet opening. The device is configured so that a force applied to the working electrode slides the first end face of the working electrode to a distance from a face of the inlet opening due to the balancing force of a fluid flowing out of the inlet opening. The device may be used in a method for analyzing an analyte, such as one or more amino acids in a liquid sample.

Abstract: A computing device, in particular, for a control unit of a motor vehicle. The computing device is configured to receive messages from at least one external unit. The computing device is configured to store the received messages at least temporarily and to transmit a plurality of the received messages to a cryptographic module, which is configured to execute a check of the transmitted messages.

Abstract: The present invention relates to a coated ion exchange substrate suitable for use in chromatography medium and methods of making thereof.

Abstract: An electrolytic eluent generator includes an electrolyte reservoir, an eluent generation chamber, and an ion exchange membrane stack. The electrolyte reservoir includes a chamber containing an aqueous electrolyte solution including an electrolyte; and a first electrode. The eluent generation chamber including a second electrode. The ion exchange connector includes an ion exchange membrane stack, and a compression block.

Abstract: A coated substrate that comprises a polyolefin substrate having a functional polymer layer disposed thereon. The polyolefin substrate has a flow through pore structure with a pore size ranging from about 5 microns to about 250 microns. The functional polymer layer has a thickness ranging from about 1 micron to about 20 microns and a layer pore structure having a pore size ranging from about 1 nm to about 100 nm.

Abstract: An anion exchange for separating a plurality of carbohydrates includes a negatively charged substrate particle. A base polymer layer includes a first plurality of quaternary amines. The polyalkylpolyamine polymer layer is covalently attached to the base condensation polymer layer. The polyalkylpolyamine polymer layer includes a polymeric branch structure that includes a second plurality of quaternary amines. A density of the second plurality of quaternary amines increases in a direction away from the base condensation polymer layer. The anion exchange stationary phase does not have a hydroxy group spaced apart from any one of the first or the second plurality of quaternary amines by an ethyl group.

Abstract: A system includes a plurality of field devices electrically connected to a feed-in device configured to provide an electrical energy supply to the field devices. The feed-in device has a monitoring device configured to detect spark generation in the energy supply and, based on this, to switch off the electrical energy supply. The field devices each have an input terminal for connecting a supply line. At least one field device is configured for electrical energy supply to at least one subsequent field device, and for monitoring. The monitoring field device has at least one output terminal for connecting a further supply line, via which the electrical energy can be forwarded to the subsequent field device. The monitoring field device has a monitoring device configured to detect spark generation in the energy supply to the subsequent field device and, based on this, to switch off the electrical energy supply.

Abstract: A system includes a plurality of field devices electrically connected to a feed-in device configured to supply electrical energy. The feed-in device has a monitoring device to detect spark generation in the electrical energy supply, and, based on this, to switch off the supply. The field devices have a first section with an input terminal for connecting a supply line, and a second section. The electrical energy provided by the feed-in device can be supplied to the first section via the input terminal, and transmitted from the first section to the second section via an electrical energy supply connection. The second section has a terminal device with at least one output line terminal for connecting at least one output line to forward the electrical energy. The electrical energy supply connection has a power limiting device to limit the electrical power transmittable from the first section to the second section.

Abstract: A method of separating analytes in a liquid sample includes flowing the liquid sample through a chromatography column configured for use in liquid chromatography. The chromatography column contains a composition that includes a solid support having an exterior surface, a ligand, and a linker. The ligand includes a polyhedral oligomeric silsesquioxane moiety. The linker is covalently bound to both the polyhedral oligomeric silsesquioxane moiety and the exterior surface of the solid support.

Abstract: An apparatus for suppressing an eluent of an aqueous sample stream including analyte ions of one charge, positive or negative, comprises a primary channel member, a first block, a first regenerant flow channel, a first charged barrier, a second block, a second regenerant flow channel, a second charged barrier, a first stationary flow-through ion exchange material, and optionally a first electrode and a second electrode. The first stationary flow-through ion exchange material comprises a polyolefin substrate having a functional polymer layer disposed thereon. The polyolefin substrate has a pore structure with a pore size ranging from about 5 microns to about 250 microns. The functional polymer layer has a thickness ranging from about 1 micron to about 20 microns, and a layer pore structure having a pore size ranging from about 1 nm to about 100 nm. The functional polymer layer comprises an ion exchange layer.

Abstract: An electrolytic eluent generator includes an electrolyte reservoir, an eluent generation chamber, and an ion exchange membrane stack. The electrolyte reservoir includes a chamber containing an aqueous electrolyte solution including an electrolyte; and a first electrode. The eluent generation chamber including a second electrode. The ion exchange connector includes an ion exchange membrane stack, and a compression block.

Abstract: An arm module includes a housing with a first connection side controllably rotatable relative to a second connection side, about an axis of rotation. The first connection side has a rotatable first connection device. The second connection side has a second connection device fixed to the housing, with a rotation-compatible data transmission device for transmitting data signals along at least one transmission path between the first and second connection sides. The transmission path includes at least one wireless transmission sub-path for wireless transmission of data signals, and at least one wire-guided transmission sub-path for wire-guided transmission of data signals. The rotation-compatible data transmission device includes at least one first wireless transmission unit and at least one second wireless transmission unit, interconnected via the transmission path and arranged to wirelessly transmit and receive data signals along the wireless transmission sub-path.