Abstract: A dehumidifier includes a first air distribution assembly connected to a process air inlet for receiving process air, and to a regeneration air outlet for exhausting regeneration air; and a second air distribution assembly connected to a process air outlet for delivering process air, and to a regeneration air inlet for receiving regeneration air. The dehumidifier includes multiple stationary modules connected in parallel between the air distribution assemblies. Each module contains desiccant and has opposing apertures for connecting to the air distribution assemblies. The air distribution assemblies are configured to cycle between a number of positions equal to the number of modules. In each position, the air distribution assemblies establish a regeneration air flow from the regeneration air inlet to the regeneration air outlet via one module, and a plurality of process air flows from the process air inlet to the process air outlet via each remaining module.

Abstract: A system and method for air temperature control in an oxygen transport membrane based reactor is provided. The system and method involves introducing a specific quantity of cooling air or trim air in between stages in a multistage oxygen transport membrane based reactor or furnace to maintain generally consistent surface temperatures of the oxygen transport membrane elements and associated reactors. The associated reactors may include reforming reactors, boilers or process gas heaters.

Abstract: An method of operating a plant includes the steps of feeding a reagent to a direct contact heating device (32) for removing ammonia from fluid fed to the direct contact heating device (32), feeding water to the direct contact heating device (32) to contact the fluid after the fluid is contacted with the reagent fed to the direct contract heating device (32), and feeding the water from the direct contact heating device (32) to a water wash tower (20) that is downstream of a carbon dioxide absorber (14) configured to use ammonia to remove carbon dioxide from fluid fed therein. The water wash tower (20) can be configured to remove ammonia from the fluid fed therein prior to that fluid being fed to the direct contact heating device (32). A plant and an apparatus for integrating desulfurization and carbon capture are configurable to implement the method.

Abstract: The present disclosure describes a spiral cross-flow filter. The spiral cross-flow filter includes a filter element having a continuous web of leaves formed by pleating a laminate filter element. The filter element may include a composite filter material including a first layer of a membrane material adjacent an outer shell, and a second layer of a permeate spacer material adjacent a permeate tube. The plurality of leaves wrap around the permeate tube in a uniform “spiral” configuration and may be separated by feed spacers.

Abstract: A method for making a composite polyamide membrane comprising a porous support and a polyamide layer, including the steps of: i) applying a polar solution including a polyfunctional amine monomer and a non-polar solution including a polyfunctional acyl halide monomer to a surface of a porous support and interfacially polymerizing the monomers to form a polyamide layer; ii) applying a dihydroxyaryl compound to the polyamide layer, wherein the dihydroxyaryl compound is represented by: formula wherein D, D?, D? and D?? are independently selected from: alkyl, alkoxy, hydrogen, halogen, hydroxyl and amine, and L is a linking group; and iii) exposing the thin film polyamide layer to nitrous acid.

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked organic-inorganic hybrid resin over the gas-permeable supporting layer, in which the crosslinked organic-inorganic hybrid resin has a structure in which a polymer incorporating therein an oxanthrene unit, or a polyimide compound has been crosslinked via a specific crosslinking chain.

Abstract: A kit for increasing the capacity and versatility of an inline dispenser with the kit including a set of stackable dispenser cartridges and an extension for increasing the capacity of the system with the extensions having fasteners thereon for changing the capacity of the system without having to replace existing components of the system.

Abstract: A dilution system for a hydraulic fracturing fluid, the dilution system including a dilution manifold; a hydration unit configured to provide a source of liquid; a diluent line connecting the hydration unit to the dilution manifold. A diluent flow control valve on the diluent line. A hydration tank configured to hydrate a mixed additive. A gravity-driven viscous fluid line connecting an exit of the hydration tank to the dilution manifold. A viscous fluid flow meter on the viscous fluid line; and, a viscous fluid control valve on the viscous fluid line. Also included is a method of processing a fracturing fluid.

Abstract: Device for dispersing a water-soluble polymer including a rotor equipped with knives, a fixed stator, over all or part of the periphery of the chamber, a ring fed by a secondary water circuit, characterised in that the rotor knives and the stator are made out of austeno-ferritic stainless steel and in that the stator comes in the form of a cylinder in the wall of which are cut vertical slits produced on part of the height of the wall, the slits having a width of between 150 and 700 micrometers.

Abstract: The invention relates to a dispersing rotor for homogenizing free-flowing media. According to the invention, the rotor-toothing formation forms a labyrinth toothing formation for a medium passing radially outward. The invention allows effective homogenization of free-flowing media by this rotor alone, without interaction with a stator-toothing formation being necessary.

Abstract: A liquid processing apparatus 200 includes a pure water supply source 20; a pure water flow rate control opening/closing valve 27; a sulfuric acid supply unit 30; a sulfuric acid supply opening/closing valve 34; mixing tanks 11 and 12 configured to mix pure water and sulfuric acid to produce a mixed chemical liquid and connected to a circulation line 100 having a circulation pump 101; a liquid processing unit 210 configured to perform a liquid process on a substrate W with the mixed chemical liquid. A controller 300 controls a pure water supply opening/closing valve 26, the sulfuric acid supply opening/closing valve 34, and the circulation pump 101, such that operation of the circulation pump 101 is started after starting supply of the pure water to the mixing tanks 11 and 12, and then, supply of sulfuric acid to the mixing tanks 11 and 12 is started.

Abstract: Fluid bed granulation process comprising the steps of: —forming a fluid bed of seeds (S1) of a chosen substance, —feeding said fluid bed with a continuous fluid flow (L) comprising a growth liquid, —inducing and maintaining a continuous vortex (V) in said fluid bed, the vortex (V) having a substantially horizontal axis, characterized in that said fluid flow (L) is fed into predetermined first zones (Z1) of said fluid bed, said first zones (Z1) being alternated to second zones (Z2) of said fluid bed in which said fluid flow (L) is not fed.

Abstract: The present invention describes a device and a method for dense and homogeneous loading of catalyst into the annular space 4 of bayonet tubes defined by an external tube 6 and an internal tube 5 used in a steam reforming reactor, said device using a rigid auxiliary tube 7 for introducing solid particles into said annular zone 4.

Abstract: The present invention describes a device and a method for dense and homogeneous loading of catalyst into the annular space of bayonet tubes employed in a steam reforming reactor, said device being constituted by a series of removable deflectors.

Abstract: A commercially viable modular ceramic oxygen transport membrane reforming reactor for producing a synthesis gas that improves the thermal coupling of reactively-driven oxygen transport membrane tubes and catalyst reforming tubes required to efficiently and effectively produce synthesis gas.

Abstract: Integrated Combustion Reactors (ICRs) and methods of making ICRs are described in which combustion chambers (or channels) are in direct thermal contact to reaction chambers for an endothermic reaction. Superior results were achieved for combustion chambers which contained a gap for free flow through the chamber. Particular reactor designs are also described. Processes of conducting reactions in integrated combustion reactors are described and results presented. Some of these processes are characterized by unexpected and superior results.

Abstract: A method and apparatus for determining the fluidization quality of a fluidized bed reactor is disclosed. The method includes measuring pressure within the fluidized bed reactor to obtain a pressure signal. The pressure signal is then transformed using wavelet decomposition into higher-frequency details and lower-frequency approximations. The dominance of the various features is then calculated based on the energy of each feature in relation to the normalized wavelet energies. The fluidization quality of the fluidized bed reactor is then determined from a comparison over time of the calculated energies.

Abstract: A fluid catalytic cracking apparatus and process is disclosed, providing for efficient conversion of heavy hydrocarbon feeds to light olefins, aromatics, and gasoline. A countercurrent flow reactor operating in bubbling or turbulent fluidization regimes is integrated with a fluid catalytic cracking riser reactor. A heavy hydrocarbon feed is catalytically cracked to naphtha and light olefins in the riser reactor, a co-current flow reactor. To enhance the yields and selectivity to light olefins, cracked hydrocarbon products from the riser reactor, such as C4 and naphtha range hydrocarbons, may be recycled and processed in the countercurrent flow reactor. The integration of the countercurrent flow reactor with a conventional FCC riser reactor and catalyst regeneration system may overcome heat balance issues commonly associated with two-stage cracking processes, may substantially increase the overall conversion and light olefins yield, and/or may increases the capability to process heavier feedstocks.

Abstract: A liquid-fuel synthesizing method includes a synthesizing step of synthesizing liquid fuels by making a synthesis gas including a carbon monoxide gas and a hydrogen gas as the main components and a slurry having solid catalyst particles suspended in a liquid react with each other in a reactor, and a synthesis gas supply step of supplying the synthesis gas to the reactor from a plurality of supply devices provided in the reactor so as to have different heights.

Abstract: Disclosed are methods of preparing stable gas-in-water dispersions by silicic acid complexation of micron-sized gas bubbles, and stable dispersions prepared by silicic acid complexation. Compositions and products comprising the dispersions are also disclosed. Dispersions may be stable over an extended period of time at room temperature.

Abstract: Novel methods of making laminated, microchannel devices are described. Examples include: assembly from thin strips rather than sheets; and hot isostatic pressing (HIPing) to form devices with a hermetically sealed wall. Laminated microchannel articles having novel features are also described. The invention includes processes conducted using any of the articles described.

Abstract: A method of starting up one or more units, the method comprising the steps of: (a) starting up a first unit including a microchannel reactor housing a Fischer-Tropsch catalyst by initially feeding a carbon monoxide source and a hydrogen source to the first unit and through the microchannel reactor; (b) processing, within the microchannel reactor, at least a portion of the carbon monoxide source and the hydrogen source; (c) monitoring at least one of internal pressure, temperature, and concentration at least one of within the microchannel reactor and downstream from the microchannel reactor; (d) at least partially containing the microchannel reactor using a wall of a containment device, the wall cooperating with the microchannel reactor to delineate at least one of a first inlet cavity and a first outlet cavity of the microchannel reactor, where at least one of the first inlet cavity and the first outlet cavity is not in fluid communication with at least one of a second inlet cavity and a second outlet cavity;

Abstract: A reactor assembly comprising a reservoir, a reaction chamber, and a valve assembly comprising at least one valve. The reservoir, reaction chamber, and valve assembly are non-magnetic. The valve assembly is adapted to selectively provide fluid communication between the reservoir and the reaction chamber.

Abstract: A fullerene arc source and a fullerene production apparatus comprising the arc source. More than one independent arc source (2) is mounted in a vacuum furnace (1). Each arc source (2) comprises an anode (21) and a cathode trigger (23). The anode (21) is in contact with the cathode trigger (23) to generate an arc and a triggering end of a positive electrode is vaporized to produce a mixture comprising the fullerene. The multiple arc source (2) in the vacuum furnace (1) simultaneously work to industrially produce the fullerene in a mass manner.

Abstract: The catalytic reactor with downward flow comprises a chamber (1) containing at least two solid catalyst beds (2; 11) separated by an intermediate zone comprising an essentially horizontal collecting plate (5) communicating with a vertical collecting pipe (7) for receiving fluids collected by the collecting plate, with a means for injecting a quenching fluid (8) emptying into the collecting pipe. An annular mixing chamber (9) is located below the collecting plate (5). A predistribution plate (11) is arranged below the chamber (9). The injection means (8) comprises a tubular portion that empties into the collecting pipe (7) in such a way as to inject quenching fluid in a direction forming an angle ? between 45° and 135° with the direction D from the axis of the mixing chamber measured at its input end.

Abstract: A packing element (1) for use in mass and/or heat transfer processes through which at least one liquid may flow, wherein the packing element (1): has an outer surface (2) comprising three or more outer arched rib elements (21) and two outer connecting edge elements (22), optionally has an inner surface (3) comprising optional inner arched rib elements (31), wherein the element 1 is substantially spherical or substantially ellipsoidal, and wherein the outer connecting edge elements (22) and the outer arched rib elements (21) and optional inner arched rib elements (31) are embodied such that the total projected area (4) of the packing element (1) when viewed in any direction (7), preferably a radial direction (5) or optional axial direction (6), is partially open due to the presence of an open projected area (41), wherein it is open to an extent that ranges from about 15 to about 50, preferably about 17 to about 40, more preferably about 18 to about 35, most preferably about 20 to about 30% of the total project

Abstract: A porous and permeable composite for treatment of contaminated fluids characterized in that said composite includes a body of iron particles and 0.01-10% by weight of at least one functional ingredient distributed and locked in the pores and cavities of the iron body. Also, methods of making a permeable porous composite for water treatment. Also, use of a permeable porous composite for reducing the content of contaminants in a fluid, wherein said fluid is allowed to pass through the permeable composite.

Abstract: Metal exchanged and impregnated zeolite materials, methods for making metal exchanged and impregnated zeolite materials, and systems for reducing an amount of a contaminant species in a feed stream using a metal exchanged and impregnated zeolite material are provided. An exemplary metal exchanged and impregnated zeolite material comprises a metal exchanged zeolite material with the formula ((M2/nO)a.(M?2/n?O)a?). Al2O3.bSiO2; and a metal oxide with the formula M2/nO impregnated in the metal exchanged zeolite material such that the metal oxide is contacting an interior surface of the pore structure of the metal exchange zeolite material. In this example, M is a cation of an alkali or alkaline earth metal, n is a valence state of metal cation M, M? is a cation of a metal other than an alkali or alkaline earth metal, n? is a valence state of metal cation M?, 0 ?a<1, 0<a??1, a+a?=1, and b is about 2 to about 500.

Abstract: The present invention relates to a sorbent comprising a solid support material, the surface of which comprises a residue of a general formula (I), wherein the residue is attached via a covalent single bond to a functional group on the surface of either the bulk solid support material itself or of a polymer film on the surface of the solid support material. Furthermore, the present invention relates to the use of the sorbent according to the invention for the purification of organic molecules, in particular pharmaceutically active compounds, preferably in chromatographic application.

Abstract: Cubic mesoporous silicas having substantially cylindrical morphology may be prepared using a combination of a first structure-directing template, such as tetramethyl ammonium hydroxide; water; a second structure-directing template, such as cetyltrimethylammonium bromide; a morphology-directing template, such as a poloxamer having a weight average molecular weight ranging from 5,000 to 20,000 Daltons; and a silica source; in the substantial absence of an alcohol solvent. The resulting materials may exhibit a three-dimensional channel structure, a length from 3 to 10 micrometers and a width from 300 nanometers to 10 micrometers, resulting in an aspect ratio from 1 to 300. Further characterization may include a surface area from 1300 to 1500 square meters per gram, an average pore diameter from 20 to 26 angstroms, and an average pore volume ranging from 0.7 to 1.1 cubic centimeters per gram.

Abstract: The catalyst disclosed is a catalyst including palladium-ruthenium alloy fine particles in which palladium and ruthenium form a solid solution. The palladium-ruthenium alloy fine particles used in this catalyst can be produced by a production method including the step of maintaining a solution containing a protective agent, a reducing agent, a palladium compound or palladium ions, and a ruthenium compound or ruthenium ions at a temperature equal to or higher than a predetermined temperature.

Abstract: A gold/titanium nanotube-multiwalled carbon nanotube composite (Au/TNT-MWCNT) is presented. The gold composition comprises at least 3% weight of the nanotube composite based on the total weight of the nanotube composite and the gold composition is located in at least one of the wall of the titanium nanotube and the wall of the multiwalled carbon nanotube. Photocatalytic oxidation of neat cyclohexane (CHA) with H2O2 as an oxidant was carried out. Au/TNT-MWCNT catalysts promoted partial CHA oxidation with high conversion (6-7.5%) and selectivity (60-75%) to cyclohexanone.

Abstract: A carrier for an ethylene epoxidation catalyst is provided that includes an alumina first component and a mixed metal oxide of alumina second component. The mixed metal oxide of alumina second component comprises a corundum lattice structure having a plurality of O—Al—O bonds, wherein an Al atom of at least one O—Al—O bond of the plurality of O—Al—O bonds, but not all of the plurality of O—Al—O bonds, is replaced with a divalent or trivalent transition metal selected from the group consisting of scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni) copper (Cu), and zinc (Zn). A catalyst containing the carrier, as well as a process for the epoxidation of ethylene using the catalyst are also disclosed.

Abstract: Provided is a process for preparing a diaryl ether compound through the dehydration of an aromatic alcohol compound in the presence of a dehydration catalyst. The dehydration catalyst is an oxide of a medium rare earth element, wherein the medium rare earth element is samarium, europium, gadolinium, or mixtures thereof.

Abstract: A method of making a catalyst comprises: mixing three or more catalytically active components with water to form an impregnating solution; contacting a support with the impregnating solution; impregnating the catalytically active components onto the support to form an impregnated support; and calcining the impregnated support to form a catalyst. Another method of making a catalyst comprises: co-impregnating a support with three or more catalytically active components in an impregnating solution to form an impregnated support; and calcining the impregnated support to form the catalyst.

Abstract: Hydrotreating catalysts and processes useful for the conversion of methoxylated aromatic compounds to simple aromatic compounds are provided. The catalysts comprise transition metal selected from the group consisting of Group 8 metals, Group 9 metals, Group 10 metals, Group 11 metals, and mixtures thereof, and catalyst support selected from the group consisting of shape-selective zeolite, silica, titania, zirconia, and mixtures thereof.

Abstract: A molecular sieve material, EMM-17, has in its as-calcined form an X-ray diffraction pattern including the following peaks in Table 11: TABLE 11 d-spacing Relative Intensity (?) [100 × I/I(o)] % 17.4-16.4 1-10 12.6-12.1 1-20 11.8-11.4 60-100 11.2-10.8 5-30 10.7-10.3 30-80? 8.62-8.38 10-40? 6.09-5.96 1-20 5.71-5.61 1-20 4.23-4.17 1-20 4.09-4.03 1-10 3.952-3.901 10-40? 3.857-3.809 5-30 3.751-3.705 1-20 3.727-3.682 1-20 3.689-3.644 1-10 3.547-3.

Abstract: ZSM-18 is synthesized from a mixture comprising water, a source of an oxide of a tetravalent element (Y), a source of an oxide of a trivalent element (X), a source of a first cation Q selected from either butamethonium cations or N,N,N,-trimethyl-N-butylammonium cations and a source of at least one second cation M, wherein the second cation M is selected from lithium, strontium, sodium, tetraalkylammonium and mixtures thereof when the first cation, Q is butamethonium cations, and wherein the second cation M is tetramethylammonium when the first cation Q is N,N,N,-trimethyl-N-butylammonium cations.

Abstract: An ionic liquid is used as liquid matrix for organic synthesis in homogeneous phase on soluble support, the ionic liquid being presented in liquid or solid form at ambient temperature, of formula A1+X1?, A1+ representing a cation, functional or non-functional, or a mixture of cations in which either none of the cations is functional or at least one of the cations is functional, and X1? an anion, functional or non-functional, or a mixture of anions in which either none of the anions is functional or at least one of the anions is functional.

Abstract: Problem To provide a method for easily producing an adsorbing material used for the removal and recovery of metals and ions in a solution, which is highly durable and has various adsorptive functional groups and forms applicable for various purposes.

Abstract: A mechanical separator for separating a fluid sample into first and second phases is disclosed. The mechanical separator includes a float having a passageway extending between first and second ends thereof with a pierceable head enclosing the first end of the float, a ballast longitudinally moveable with respect to the float, and a bellows extending between a portion of the float and a portion of the ballast. The bellows is adapted for deformation upon longitudinal movement of the float and the ballast, with the bellows isolated from the pierceable head. The float has a first density and the ballast has a second density greater than the first density. The bellows is structured for sealing engagement with a cylindrical wall of a tube, and the pierceable head is structured for application of a puncture tip therethrough. The separation device is suitable for use with a standard medical collection tube.

Abstract: A microfluidic device allowing for multiple discrete reactions sites and allowing for sequential reactions and sample analysis along with methods for device fabrication and use is provided. The microfluidic device provides a micro-total analysis system on a single substrate and has multiple reaction sites allowing for cascade reactions and analysis on a single chip using micro-quantities of sample and reagents. The microfluidic device provides discrete sites for immobilization of cognitive agents including enzymes, binding proteins, nucleic acids and the like as well as methods for quantitative analysis. The invention also provides methods for the fabrication of the device.

Abstract: A method for performing multiplexed bead-based immunoassays using a microfluidic cassette capable of detecting a particle passing in substantially single file through an interrogation zone and generating a Coulter effect signal responsive to a characteristic of the particle. A fluid sample may be prepared by associating antibody-coated beads of different sizes to particles of interest. A first multiplexing option may be based on bead size, in which case the intensity of the Coulter signal is used to sort or characterize the particles. A second multiplexing option may be based on detection of Stokes' shift phenomena, or even simply emission intensity, in which case particles may be characterized responsive to intensity of the signal resulting from detection of radiation. The first and second multiplexing options may be employed together to populate an array of particle characteristics.

Abstract: A microfluidic cartridge, configured to facilitate processing and detection of nucleic acids, comprising: a top layer comprising a set of cartridge-aligning indentations, a set of sample port-reagent port pairs, a shared fluid port, a vent region, a heating region, and a set of Detection chambers; an intermediate substrate, coupled to the top layer comprising a waste chamber; an elastomeric layer, partially situated on the intermediate substrate; and a set of fluidic pathways, each formed by at least a portion of the top layer and a portion of the elastomeric layer, wherein each fluidic pathway is fluidically coupled to a sample port-reagent port pair, the shared fluid port, and a Detection chamber, comprises a turnabout portion passing through the heating region, and is configured to be occluded upon deformation of the elastomeric layer, to transfer a waste fluid to the waste chamber, and to pass through the vent region.

Abstract: A chemical assay device includes a hydrophilic substrate and one or more hydrophobic structures that extend from a first side of the hydrophilic substrate to a second side of the hydrophilic substrate. A hydrophobic structure in the hydrophilic substrate forms a fluid barrier wall that extends from the first side of the hydrophilic substrate to the second side of the hydrophilic substrate with a deviation of less than 20° from a perpendicular axis between the first side and the second side. The hydrophobic structure is formed from a wax or a phase change ink.

Abstract: The invention relates to a microfluidic circuit including at least one microchannel for the flow of a first fluid conveying drops or bubbles of at least one second fluid, characterized in that the height of the microchannel is sized so as to crush the drops or bubbles during the movement thereof, and in that the microchannel comprises at least one trough, extending at least partially in the direction of flow of the first fluid or an area for trapping drops or bubbles, said area or the trough having a height that is greater than the height of the microchannel, such that at least some of the drops or bubbles of the second fluid in the microchannel are drawn and guided into the trough or into the trapping area.

Abstract: Methods and devices for conducting chemical or biochemical reactions that require multiple reaction temperatures are described. The methods involve moving one or more reaction droplets or reaction volumes through various reaction zones having different temperatures on a microfluidics apparatus. The devices comprise a microfluidics apparatus comprising appropriate actuators capable of moving reaction droplets or reaction volumes through the various reaction zones.

Abstract: Various wear resistance designs may be applied to a reactor configured to facilitate chemical reactions, and/or comminution using shockwaves created in a supersonic gaseous vortex. The reactor may include a rigid chamber having a substantially circular cross-section. A first gas inlet may be configured to introduce a high-velocity gas stream into the chamber. A first replaceable wear part may be disposed in the chamber to absorb wear impact caused by the gas stream. In some implementations, the first replaceable wear part may be a cylindrical rod continuously fed into the chamber. In some implementations, the first replaceable wear part may be coated with, or composed of, a catalytic material, and/or may be electrically isolated from the rest of the reactor. In some implementations, a second gas inlet may be disposed to steer the gas stream to a desired area within the chamber to even out the wear impact.

Abstract: An internal combustion engine and centrifugal separator assembly separates contaminants from crankcase gas. A crankcase is connected to the centrifugal separator including a centrifugal rotor. A rotor housing delimits a separation space in which the centrifugal rotor is arranged to rotate. A gas inlet conducts crankcase gas to a central part of the centrifugal rotor. A gas outlet communicates with a part of the separation space surrounding the centrifugal rotor and to conduct cleaned crankcase gas out of the separation space. A particle outlet communicates with the part of the separation space. The particle outlet is connected to a collector for the separated particles. The collector is configured to communicate with the gas inlet via a connection to provide a pressure difference between the particle outlet and the collector. The separated particles are drawn out of the particle outlet and into the collector during operation of the centrifugal separator.

Abstract: The present invention relates to a drive head for detachable connection of a drive with a rotor of a centrifuge, comprising a base body, which is rotatable about an axis of rotation (R) and at least two coupling elements, which are mounted on the base body so as to be able to swivel out to the outside about a respective swivel axis. The swivel axes are tilted at an angle (?) with respect to the axis of rotation (R), and the coupling elements have a resting surface at their swiveling end, which extends perpendicularly to the axis of rotation (R). The present invention further relates to a kit comprising the drive head and a centrifuge comprising the drive head or the kit.