Abstract: A gas sparger produces an intermittent flow of bubbles even if provided with a continuous gas flow. The sparger has a housing to collect a pocket of gas and a conduit to release some of the gas from the pocket when the pocket reaches a sufficient size. Optionally, a cover over an outlet from the conduit may break up or distribute the released gas. A large sparger for use with a commercial membrane module can comprise a plurality of smaller units.

Abstract: Adsorptive bed devices include a monolithic scaffold having a stress absorbing rigid structure and open cells filled with adsorptive beads. The monolithic scaffold restricts movement of the plurality of adsorptive beads, absorbs stress induced by a hydraulic pressure gradient along a direction of liquid flow. In one embodiment the adsorptive bed is packed into a chromatography column, and in another embodiment the adsorptive bed is sealed in a monolithic block. In another embodiment, the adsorptive bed device includes an adsorptive block, first and second planar distributors and peripheral seal.

Abstract: The invention relates to the isolation or extraction of exosomes.

Abstract: To provide a preparative thin layer chromatography method capable of acquiring a target spot efficiently using a simple and convenient method without the possibility of decomposition of a component in a spot. The preparative thin layer chromatography method is a preparative method for dispensing a spot from a thin layer chromatography plate and includes a process 1 that forms a groove by removing the carrier at the circumferential edge of a spot to be dispensed, a process 2 that inserts a nozzle having a packing part at the tip thereof into the groove formed in the process 1, a process 3 that discharges a solvent through the nozzle, and a process 4 that sucks the solvent in which a spot component has been dissolved.

Abstract: An ion exchange chromatography column contains an ion exchange stationary phase that includes a charged substrate, a plurality of first particles, and a plurality of second particles. The plurality of first particles each include first ion exchange groups and the first particles are ionically bound to the charged substrate. The plurality of second particles each include second ion exchange groups and the second particles are ionically bound to the charged substrate. The first particles having a first ion exchange group density, and the second particles having a second ion exchange group density. The first ion exchange group density is greater than the second ion exchange group density. The ion exchange chromatography column has a number of zones connected in series where each zone can have a varying level of first ion exchange groups and second ion exchange group from the inlet zone to the outlet zone.

Abstract: Apparatus and methods for performing chromatography may include a chromatography column and a vacuum insulated jacket having an inner wall and an outer wall. A vacuum area may be formed between the inner wall and the outer wall. The inner wall of the vacuum insulated jacket may surround the chromatography column. A gap may be formed between an outer wall of the chromatography column and the inner wall of the vacuum insulated jacket. The vacuum insulated jacket may extend beyond one or more end frits of the column. The gap may be filled with one or more materials so as to form an insulating or thermal barrier.

Abstract: The present invention is directed to a drilling fluid reclaimer. The reclaimer has at least one adjustable screen assembly for providing a leveling filter for reclaimed drill fluid. Used drill fluid is placed at the screen assembly at the front the of the screen assembly. The at least one screen is vibrated to separate large particulate matter from liquid drilling fluid. A second screen is provided for additional filtering. Large particulate matter is expelled by a chute at the back of the screen assembly. Drilling fluid passing through the screen is “reclaimed” for use with a drilling system.

Abstract: Described are a fraction collector and a method of fraction collection for a liquid chromatography system. The method includes diverting a liquid chromatography system flow from a waste channel to a collection tube at a start of a fraction collection window and collecting the system flow dispensed from the collection tube during the fraction collection window. At the end of the window, the system flow is diverted to the waste channel and a flow of a wash solvent is provided to the collection tube to dispense liquid remaining in the collection tube at the end of the window from the collection tube. The method can increase the amount of the collected fraction and can reduce or eliminate cross-contamination of a subsequently collected fraction. The method is useful for analytical scale applications where the collected fractions may have volumes defined by a limited number of drops dispensed from the collection tube.

Abstract: The present disclosure provides a fast and high-capacity intelligent cellulose-based oil-absorbing material and a preparation method and use thereof. The material includes an intelligent response layer and an adsorption layer. The intelligent response layer is a pH-responsive nanofiber layer with an adjustable pH response performance and is obtained by grafting hyperbranched polycarboxylic acid-modified polyethyleneimine on to carboxylated cellulose nanofibers. The hyperbranched polycarboxylic acid is prepared by melting and polycondensing at a high temperature, using trimethylolpropane as a core, citric acid as a reactive monomer, and p-toluenesulfonic acid as a catalyst. The adsorption layer is prepared by coating ferroferric oxide with the carboxylated cellulose nanofibers to prepare magnetic carboxylated cellulose nanofibers, and then modifying the magnetic carboxylated cellulose nanofibers with hexadecylamine.

Abstract: The apparatus comprises a lateral arrangement of a plurality of magnetic elements, wherein at least two, more than two or all magnetic elements are arranged adjacent to each other, a flow-through tube wherein the magnetic axes of the at least two magnetic elements of the arrangement are almost or fully parallel to each other and almost or fully perpendicular to the plane of the arrangement, wherein magnetic poles of neighbouring magnetic elements, which magnetic poles are arranged directly adjacent to each other parallel to the plane of the arrangement, have different polarities. The arrangement and the tube are movable relative to each other such that the arrangement and the tube can be approached to and/or detached from each other. When the tube is approached to the arrangement, it is at least partially arranged along at least two magnetic elements.

Abstract: The present invention is directed to a drilling fluid reclaimer. The reclaimer has at least one adjustable screen assembly for providing a leveling filter for reclaimed drill fluid. Used drill fluid is placed at the screen assembly at the front the of the screen assembly. The at least one screen is vibrated to separate large particulate matter from liquid drilling fluid. A second screen is provided for additional filtering. Large particulate matter is expelled by a chute at the back of the screen assembly. Drilling fluid passing through the screen is “reclaimed” for use with a drilling system.

Abstract: A process for manufacturing particles of water-absorbing material is provided. The process includes providing a powder bed composed of an absorptive powder comprising a water-absorbing polysaccharide onto a surface; releasing an aqueous solution from a solution dispenser so as to contact the powder bed, thereby forming a solution-impregnated humid material; letting the solution-impregnated humid material agglomerate in substantially shear-less conditions to form an agglomerated humid material, the solution-impregnated humid material being supported by the surface; and drying the agglomerated humid material, thereby forming the particles.

Abstract: The present invention provides that powder is mainly constituted from secondary particles of hydroxyapatite. The secondary particles are obtained by drying a slurry containing primary particles of hydroxyapatite and aggregates thereof and granulating the primary particles and the aggregates. A bulk density of the powder is 0.65 g/mL or more and a specific surface area of the secondary particles is 70 m2/g or more. The powder of the present invention has high strength and is capable of exhibiting superior adsorption capability when it is used for an adsorbent an adsorption apparatus has.

Abstract: The present invention provides a processing device with a high degree of flexibility in setting of preprocessing and which is capable of increasing the preprocessing efficiency, and an analysis system provided with the same. Setting receiving means (84d) receives, for each sample, setting of a plurality of types of preprocessing and a parameter for each preprocessing. A preprocessing execution section (84e) controls a plurality of preprocessing sections and a transport arm (24) so that a plurality of types of preprocessing set for each of different samples is performed simultaneously in parallel. The preprocessing execution section (84e) performs control in such a way that preprocessing is not to be performed on different samples at the same preprocessing section at the same.

Abstract: The invention relates to a method for chromatographic separation, comprising at least one step of elution of species held on a stationary phase by means of an eluent, followed by a step of moving the eluent in contact with the stationary phase by means of a compressed gas. Preferably, the movement step takes place after a step of elution of the product(s) of interest and/or after a step of regeneration of the stationary phase.

Abstract: Preparation methods of a high modulus carbon fiber (HMCF) and a precursor (mesophase pitch (MP)) thereof are provided. The preparation method of MP includes: separating components with a molecular weight distribution (MWD) of 400 to 1,000 from a heavy oil raw material through size-exclusion chromatography (SEC); subjecting the components to ion-exchange chromatography (IEC) to obtain modified feedstock oil, where, the components are passed through macroporous cation-exchange and anion-exchange resins in sequence to remove acidic and alkaline components; and subjecting the modified feedstock oil to thermal polycondensation and carbonization to obtain high-quality MP with prominent spinnability. With high mesophase content, low softening point, low viscosity, and prominent meltability and spinnability, the obtained MP is a high-quality raw material for preparing HMCFs. The obtained MP can be subjected to melt spinning, pre-oxidation, carbonization, and graphitization to obtain an MP-based HMCF.

Abstract: A liquid delivery device includes a liquid delivery pump that sucks a mobile phase, which is liquid, from a mobile phase container containing the mobile phase through a suction pipe whose end is immersed in the mobile phase in the mobile phase container, and feeds the mobile phase, and at least one dissolved substance removal filter that is provided at a position upstream of the liquid delivery pump on a path through which the mobile phase flows and is filled with a filler having the property of adsorbing a dissolved substance in the mobile phase.

Abstract: The present disclosure provides compositions, methods, and devices for sensing, detecting, and/or selectively capturing phosphate from water. An exemplary method includes: contacting a ligand or a rare earth metal complex of a ligand as described herein with an aqueous phosphate-containing medium at a pH of 5 to 12 under conditions sufficient to bind phosphate (e.g., reversibly bind phosphate). In certain embodiments, the method further includes releasing the bound phosphate by contacting the bound phosphate complex with an aqueous medium at a pH of 0 to 4 under conditions sufficient to release the bound phosphate.

Abstract: The present invention provides: a porous fiber that exhibits both improved adsorption capacity, and suppressed exposure and detachment of particulates; an adsorption column filled with said porous fiber; and a blood purification system in which an adsorption column is connected to a water removal column. The porous fiber according to the present invention has a three-dimensional pore structure formed by a solid fiber, and satisfies all of the following conditions. (1) The porous fiber has particulates having a diameter of not more than 200 ?m, and the percentage of area occupied by said particulates having a diameter of not more than 200 ?m in a horizontal cross section of the three-dimensional pore structure is at least 3.0%. (2) The porous fiber does not contain said particulates having a diameter of not more than 200 ?m in the region within 1.0 ?m in the depth direction from the outermost surface.

Abstract: A system for and method of cleaning polymeric and ceramic microfiltration and ultrafiltration membranes in hollow fiber, flat sheet, and tubular membrane units is provided. The method includes using a reducing agent, specifically ascorbic acid, based formulation. The method also includes certain protocols useful in conducting such cleanings. The system includes features for facilitating the method of the present invention.