Abstract: A method may involve forming one or more photoresist layers over a sensor located on a structure, such that the sensor is covered by the one or more photoresist layers. The sensor is configured to detect an analyte. The method may involve forming a first polymer layer. Further, the method may involve positioning the structure on the first polymer layer. Still further, the method may involve forming a second polymer layer over the first polymer layer and the structure, such that the structure is fully enclosed by the first polymer layer, the second polymer layer, and the one or more photoresist layers. The method may also involve removing the one or more photoresist layers to form a channel through the second polymer layer, wherein the sensor is configured to receive the analyte via the channel.

Abstract: The present invention relates to producing chemicals and biofuels from wood material, e.g. mixed forest biomass. Specifically, the invention concerns a process for conditioning spent liquor produced by SO2-ethanol-water (SEW) fractionation of wood chips for fermentation to butanol, ethanol and acetone/isopropanol (so called ABE process) by Clostridia bacteria.

Abstract: The present invention relates to systems and methods for minimizing or eliminating diffusion effects. Diffused regions of a segmented flow of multiple, miscible fluid species may be vented off to a waste channel, and non-diffused regions of fluid may be preferentially pulled off the channel that contains the segmented flow. Multiple fluid samples that are not contaminated via diffusion may be collected for analysis and measurement in a single channel. The systems and methods for minimizing or eliminating diffusion effects may be used to minimize or eliminate diffusion effects in a microfluidic system for monitoring the amplification of DNA molecules and the dissociation behavior of the DNA molecules.

Abstract: The present invention provides a bilayer membrane produced using a microchannel capable of easily forming bilayer membranes such as planar lipid bilayer membranes in large quantities, and a production method thereof. A process for producing a bilayer membrane of the present invention comprises forming a state where two liquid phases or liquid and gaseous phases each containing amphipathic molecules are alternately arranged in a microchannel, discharging one of the two liquid phases or the gaseous phase of the liquid and gaseous phases through branch minichannels formed in the wall on one side or in the walls on both sides to contact the remaining liquid phases adjacent to each other, and thereby forming a side-by-side arrangement of bilayer membranes comprising the amphipathic molecules.

Abstract: The present invention provides a biosensor system comprising a light source, a cartridge adapted to be illuminated by said light source, a light detector adapted for detecting a signal originating from the cartridge, an illumination control means adapted to vary the illumination of the cartridge between at least two different states, a means for generating a first oscillation with a first frequency, and a means for generating a second oscillation with a second frequency, wherein the frame rate of the light detector is triggered by the first oscillation and the illumination control means is triggered by the second oscillation.

Abstract: A microchip capable of sending liquid in a micro flow channel to a predetermined place irrespective of the pressure difference and sending a mixture of two or more liquid masses to a predetermined place even if the channel structure is simple. The microchip comprises an intermediate reservoir portion provided in a micro flow channel and adapted for temporarily holding liquid sent through the micro flow channel. The microchip is characterized in that the intermediate reservoir portion has a side channel, the volume of the intermediate reservoir portion is smaller than the total volume of the liquid sent into the intermediate reservoir portion, the side channel is provided for communication of a micro flow channel on the upstream side of the intermediate reservoir portion with a micro flow channel on the downstream side thereof, and the cross-section area of the side channel is smaller than that of the micro flow channel.

Abstract: A sample support structure comprising a sample support manufactured from a semiconductor material and having one or more openings therein. Methods of making and using the sample support structure.

Abstract: A method for recovering inorganic salt during processing of a lignocellulosic feedstock is provided. The method comprises pretreating the lignocellulosic feedstock by adding an acid to the feedstock to produce a pretreated lignocellulosic feedstock. A soluble base is then added to the pretreated lignocellulosic feedstock to adjust the pH and produce a neutralized feedstock. The neutralized feedstock is then enzymatically hydrolyzed to produce an enzyme hydrolyzed feedstock and a sugar stream. Inorganic salt is recovered from either a stream obtained from the lignocellulosic feedstock prior to the step of pretreating, a stream obtained from the pretreated lignocellulosic feedstock, a stream obtained from the neutralized feedstock, a stream obtained from the sugar stream, or a combination of these streams. The inorganic salt may be concentrated, clarified, recovered and purified by crystallization, electrodialysis drying, or agglomeration and granulation, and then used as desired, for example as a fertilizer.

Abstract: A device for volumetric metering a liquid biologic sample is provided. The device includes an initial chamber, a second chamber, a third chamber, a first valve, a second valve and a third valve. The chambers are each configured so that liquid sample disposed in the respective chamber is subject to capillary forces. Each chamber has a volume, and the volume of the initial chamber is greater than the volume of either the second or the third chambers. The valves each have a burst pressure. The burst pressure of the first valve is greater than the third burst pressure. The first valve is in fluid communication with the second chamber. The second valve is disposed between, and is in fluid communication with, the initial chamber and the third chamber. The third valve is in fluid communication with the third chamber.

Abstract: A method of modeling a fermentation process comprises providing a first principles model of a fermentation process; determining the concentration of at least one substrate in a fermentation composition at a first time; and predicting the concentration of at least one component of the fermentation composition at a second time using the first principles model, wherein the second time is after the first time.

Abstract: This invention provides a digital microfluidic manipulation device and a manipulation method thereof. This device comprises a PDMS membrane having a surface comprising a plurality of hydrophobic microstructures; a plurality of air chambers arranged in an array and placed under the PDMS membrane; and a plurality of air channels, each of which connects to a corresponding one of the plurality of air chambers. When a suction force is transmitted via one of the plurality of air channels to the corresponding air chamber, a portion of the PDMS membrane above the air chamber deforms toward the air chamber, so that the surface morphology and the contact angle of the liquid/solid interface of the surface comprising the plurality of hydrophobic microstructures are altered and thereby to drive droplets.

Abstract: The present disclosure relates to microfluidic devices adapted for facilitating cytometry analysis of particles flowing therethrough. In certain embodiments, the microfluidic devices have onboard sterilization capabilities. In other embodiments, microfluidic devices have integral collection bags and methods for keeping the microfluidic channels clean.

Abstract: A process of producing ethanol from whole stillage, includes obtaining a supply of whole stillage from an ethanol production facility after ethanol has been extracted therefrom; pre-treating the whole stillage to convert hemicellulose portions of the whole stillage into sugars; adding enzymes to the whole stillage to convert cellulose portions of the whole stillage to sugars; fermenting the whole stillage to create a beer mixture; and distilling the beer mixture to separate ethanol therefrom. The pre-treating step may include adding acid to the whole stillage to decrease its pH level; heating and pressurizing the whole stillage; holding the whole stillage under pressure and heat for a dwell time; removing pressure from the whole stillage to cause flashing; and cooling the whole stillage before the enzymes are added.

Abstract: A microfluidic cartridge including on-board dry reagents and microfluidic circuitry for determining a clinical analyte or analytes from a few microliters of liquid sample; with docking interface for use in a host workstation, the workstation including a pneumatic fluid controller and spectrophotometer for monitoring analytical reactions in the cartridge.

Abstract: The present invention relates to systems and methods for minimizing or eliminating diffusion effects. Diffused regions of a segmented flow of multiple, miscible fluid species may be vented off to a waste channel, and non-diffused regions of fluid may be preferentially pulled off the channel that contains the segmented flow. Multiple fluid samples that are not contaminated via diffusion may be collected for analysis and measurement in a single channel. The systems and methods for minimizing or eliminating diffusion effects may be used to minimize or eliminate diffusion effects in a microfluidic system for monitoring the amplification of DNA molecules and the dissociation behavior of the DNA molecules.

Abstract: Apparatus for immunoassay includes: a cartridge, including at least one test unit; a pin-film assembly, having a second sealing film, a plurality of pierce mechanisms, and a first actuation unit; a plurality of magnetic particles; at least one first magnetic unit; and at least one second magnetic unit. The test unit includes a plurality of fluid chambers, a plurality of pin chambers, a microchannel structure, a buffer chamber, a detection chamber and a waste chamber. The first actuation unit drives the pierce mechanisms to enable a working fluid to flow into the detection chamber storing the magnetic particles. As the second magnetic unit has a magnetic force larger than that of the first magnetic unit and can move reciprocatingly between a third position and a fourth position, the magnetic particles are driven to move reciprocatingly inside the detection chamber, thereby fully mixing the magnetic particles with the working fluid.

Abstract: A method and device for periodically perturbing the flow field within a microfluidic device to provide regular droplet formation at high speed.

Abstract: Three-dimensional microfluidic devices including by a plurality of patterned porous, hydrophilic layers and a fluid-impermeable layer disposed between every two adjacent patterned porous, hydrophilic layers are described. Each patterned porous, hydrophilic layer has a fluid-impermeable barrier which substantially permeates the thickness of the porous, hydrophilic layer and defines boundaries of one or more hydrophilic regions within the patterned porous, hydrophilic layer. The fluid-impermeable layer has openings which are aligned with at least part of the hydrophilic region within at least one adjacent patterned porous, hydrophilic layer. Microfluidic assay device, microfluidic mixer, microfluidic flow control device are also described.

Abstract: The present invention relates to producing chemicals and biofuels from wood material, e.g. mixed forest biomass. Specifically, the invention concerns a process for conditioning spent liquor produced by SO2-ethanol-water (SEW) fractionation of wood chips for fermentation to butanol, ethanol and acetone/isopropanol (so called ABE process) by Clostridia bacteria.

Abstract: A microfluidic-based flow assay and methods of manufacturing the same are provided. Specifically, the microfluidic flow assay includes a micropatterned surface that induces clot formation and an array of microfluidic channels though which blood flows. The micropatterned surface contains two clotting stimuli, one for inducing platelet adhesion and another for inducing the coagulation cascade.

Abstract: A process for converting a lignocellulosic biomass comprising a) converting a lignocellulosic biomass into a fuel and producing an aqueous waste stream comprising at least one dissolved organic material and at least one dissolved sulfur-containing compound, wherein the aqueous waste stream has a sulfur content of more than 400 parts per million by weight, relative to the weight of the aqueous waste stream; and b) treating the aqueous waste stream, said treating comprises anaerobic digestion of a mixture comprising a first aqueous feed comprising the aqueous waste stream and a second aqueous feed, wherein the mixture has a sulfur content of at most 400 parts per million by weight, relative to the weight of the mixture.

Abstract: The present invention provides a biosensor cartridge (11) comprising a bottom portion (1) with a well (2) adapted to accommodate a liquid sample and a cover portion (3) for closing said well (2). The well (2) has a sensor surface (4). The bottom portion (1) is adapted for allowing light to enter along a first optical path (5), to be reflected at the sensor surface (4) and to exit along a second optical path (6). The invention further relates to a method of manufacturing such a cartridge (11).

Abstract: This invention relates to a method for the fabrication of photonic biosensor arrays and applications of arrays produced by the method in the biomedical field.

Abstract: This invention relates to photonic biosensor arrays in particular employing plasmon resonance based sensing, and to methods and apparatus for reading such arrays. A biosensor array for plasmon resonance-based sensing of a plurality of different biological targets simultaneously, the array comprising a transparent substrate having a surface bearing a plurality of assay spots for plasmon resonance sensing, each of said assay spots comprising a discrete metallic island, a said metallic island comprising a plurality of metallic nanoparticles to which are attached functionalizing molecules for binding to a said biological target, different said islands bearing different said functionalizing molecules for binding to different ones of said biological targets, and wherein total internal reflection of light at said surface at a wavelength at or near a said plasmon resonance results in scattering of said light away from said surface, said scattering being modulated by said binding of said biological targets.

Abstract: The present invention provides spray methods of delivering saccharification enzymes, fermentation organisms, and other hydrolysis or fermentation ingredients onto lignocellulosic biomass. The methods reduce the need for mechanical mixing when the biomass solids are undergoing enzymatic hydrolysis, and reduce dilution to allow higher product titers in the hydrolysis and/or fermentation steps.

Abstract: Method for producing ethanol from solid citrus waste by reducing the concentration of limonene in citrus waste to allow fermentation. In one embodiment ground solid citrus waste is partially hydrolyzed and pasteurized by heating using a jet cooker and then injected into a flash tank to remove limonene. The heated citrus waste is then cooled, hydrolyzed with enzymes and fermented to ethanol. The remaining solids and liquids may be processed further to yield other byproducts. More particularly, the solids may be dried and pressed for use in cattle feed and the liquids may be further fermented or processed to yield additional ethanol, acetate, galacturonic acid monomers and polymers, five carbon sugars and other products.

Abstract: The invention encompasses microfluidic microarray assemblies (MMA) and subassemblies and methods for their manufacture and use. In one embodiment, first and second channel plates are provided and are sealingly connected to a test chip in consecutive steps. Each plate includes microfluidic channels configured in a predetermined reagent distribution pattern. The test chip comprises a plurality of discrete test positions, each test position being located at the intersection between a first predetermined reagent pattern and a second predetermined reagent pattern, wherein at least one of said patterns is non-linear. The first channel plate allows the distribution of a first reagent on said test chip, wherein said first reagent is immobilized at said test positions. The second channel plate allows the distribution of a second reagent on said test chip, wherein said second reagent comprises a plurality of different test samples.

Abstract: The methods and reagents described in this invention are used to analyze circulating tumor cells, clusters, fragments, and debris. Analysis is performed with a number of platforms, including flow cytometry and the CELLSPOTTER® fluorescent microscopy imaging system. Analyzing damaged cells has shown to be important. However, there are two sources of damage: in vivo and in vitro. Damage in vivo occurs by apoptosis, necrosis, or immune response. Damage in vitro occurs during sample acquisition, handling, transport, processing, or analysis. It is therefore desirable to confine, reduce, eliminate, or at least qualify in vitro damage to prevent it from interfering in analysis. Described herein are methods to diagnose, monitor, and screen disease based on circulating rare cells, including malignancy as determined by CTC, clusters, fragments, and debris. Also provided are kits for assaying biological specimens using these methods.

Abstract: Carriers or holders for holding microfluidic devices are provided. Some of the carriers that are provided include a hydration control device and/or a source of controlled fluid pressure to facilitate use of the carrier in conducting various types of analyses.

Abstract: The disclosure provides a simple and effective way of synthesizing robust organic-inorganic hybrid gels and ultra-thin films using vaporization of a gel precursor. The gels are synthesized at relatively low temperature allowing the activity of the immobilized species to be maintained. The disclosure provides robust, synthetic, selective, active and/or passive transport systems in the form of functional biologically active species and mechanisms for forming them. These systems allow selective and passive or active transport of ionic, molecular and biological species through the incorporation of functional biological molecules and biomolecular assemblies in a rigid matrix.

Abstract: A method for recovering inorganic salt during processing of a lignocellulosic feedstock is provided. The method comprises pretreating the lignocellulosic feedstock by adding an acid to the feedstock to produce a pretreated lignocellulosic feedstock. A soluble base is then added to the pretreated lignocellulosic feedstock to adjust the pH and produce a neutralized feedstock. The neutralized feedstock is then enzymatically hydrolyzed to produce an enzyme hydrolyzed feedstock and a sugar stream. Inorganic salt is recovered from either a stream obtained from the lignocellulosic feedstock prior to the step of pretreating, a stream obtained from the pretreated lignocellulosic feedstock, a stream obtained from the neutralized feedstock, a stream obtained from the sugar stream, or a combination of these streams. The inorganic salt may be concentrated, clarified, recovered and purified by crystallization, electrodialysis drying, or agglomeration and granulation, and then used as desired, for example as a fertilizer.

Abstract: The present invention relates to a method for removing inhibitor compounds from a cellulosic biomass-to-ethanol process which includes a pretreatment step of raw cellulosic biomass material and the production of fermentation process water after production and removal of ethanol from a fermentation step, the method comprising contacting said fermentation process water with an anode of a microbial fuel cell, said anode containing microbes thereon which oxidatively degrade one or more of said inhibitor compounds while producing electrical energy or hydrogen from said oxidative degradation, and wherein said anode is in electrical communication with a cathode, and a porous material (such as a porous or cation-permeable membrane) separates said anode and cathode.

Abstract: An optical device provides evanescent radiation, in response to incident radiation, in a detection volume for containing a target component in a medium. The detection volume has at least one in-plane dimension (W1) smaller than a diffraction limit. The diffraction limit is defined by the radiation wavelength and the medium. The evanescent radiation is provided by aperture defining structures having a smallest in plane aperture dimension (W1) smaller than the diffraction limit. The detection volume is provided between the aperture defining structures. The aperture defining structures further define a largest in plane aperture dimension (W2). The largest in plane aperture dimension is larger than the diffraction limit.

Abstract: A microplate for use within an interrogation system and a method of using the microplate are disclosed. The microplate contains within the bottom of each well, an optical waveguide grating based sensor. Approximate to each sensor is a mask having an aperture of predetermined size. The aperture regulates the light that enters and exits the sensor upon successive scans and ensures repeatable readings from the sensor. In an extended embodiment, a method of detection is disclosed that utilizes a launch and receive system while employing the aforementioned microplate.

Abstract: The disclosure relates to a compound of formula (I): and salts thereof; wherein Ar, L, A, X, R1, R2, R3, R4a, R4b, and R5 are as defined in the disclosure; compositions comprising said compounds, methods for their preparation, intermediates thereto, and the use thereof, particularly as drugs.

Abstract: The present invention is directed to the enhanced production of ethanol from fermentation using an ethanol producing microorganism. In particular, the present invention provides a process for the enhanced growth and metabolism of an ethanol producing microorganism (e.g., yeast), for the purpose of increasing or enhancing ethanol production, both in terms of total ethanol produced and in terms of the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products (i.e., ethanol). In accordance with this invention bicarbonate ions are used to enhance ethanol fermentation and/or reduce the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products, i.e., ethanol. The present invention can also be used for enhancing fermentation end products in, for example, the fuel ethanol, industrial, cheese, brewing, and wine making industries.

Abstract: Methods for detecting one or more analytes, such as a protein, in a fluid path are provided. The methods include resolving, immobilizing and detecting one or more analytes in a fluid path, such as a capillary. Also included are devices and kits for performing such assays.

Abstract: This invention provides novel enzyme compositions using newly identified and isolated C. lucknowense enzymes, including CBH Ib CBH IIb, EG II, EG VI, ?-glucosidase, and xylanase II in conjunction with previously identified enzymes CBH Ia, CBH IIa (previously described as Endo 43), and EG V. These enzyme compositions demonstrate an extremely high ability to convert lignocellulosic biomass (e.g., Avicel, cotton, Douglas fir wood pretreated by organosolv) to glucose. CBH Ia and IIb, which both have a cellulose-binding module (CBM) displayed a pronounced synergism with three major endoglucanases (EG II, EG V, EG VI) from the same fungus in hydrolysis of cotton as well as a strong synergy with each other. The enzyme compositions are effective in hydrolysis of the lignocellulosic biomass.

Abstract: A method for recovering inorganic salt during processing of a lignocellulosic feedstock is provided. The method comprises pretreating the lignocellulosic feedstock by adding an acid or a base to the feedstock to produce a pretreated lignocellulosic feedstock. A soluble base or acid is then added to the pretreated lignocellulosic feedstock to adjust the pH and produce a neutralized feedstock. The neutralized feedstock is then hydrolyzed to produce an hydrolyzed feedstock and a sugar stream. Inorganic salt is recovered from a wash stream obtained from the pretreated lignocellulosic feedstock, a stream obtained from the neutralized feedstock, a stream obtained from the sugar stream, or a combination of these streams. The inorganic salt may be concentrated, clarified, recovered and purified by crystallization, electrodialysis, drying, or agglomeration and granulation, and then used as desired, for example, as a fertilizer.

Abstract: The present invention relates to processes for producing ethanol from citrus waste wherein the level of fermentation-inhibiting compounds found in citrus waste or the complex polysaccharide or sugars derived therefrom is reduced using a pre-fermentation treatment step to lower the level of fermentation-inhibiting compounds to the fermentation feedstock.

Abstract: The invention provides methods, apparatuses, and kits for producing ethanol and other alcohols. The methods involve fermenting organic material in a fermentation mixture to a biogas comprising methane; converting at least a portion of the biogas to synthesis gas comprising CO and H2; and contacting at least a portion of the synthesis gas with a catalyst to produce alcohol. In some embodiments, a microorganism that reduces ferric iron to ferrous iron is included in the fermentation mixture to enhance the efficiency of the fermentation and the yield of alcohol.

Abstract: A method for recovering inorganic salt during processing of a lignocellulosic feedstock is provided. The method comprises pretreating the lignocellulosic feedstock by adding an acid to the feedstock to produce a pretreated lignocellulosic feedstock. A soluble base is then added to the pretreated lignocellulosic feedstock to adjust the pH and produce a neutralized feedstock. The neutralized feedstock is then enzymatically hydrolyzed to produce an enzyme hydrolyzed feedstock and a sugar stream. Inorganic salt is recovered from either a stream obtained from the lignocellulosic feedstock prior to the step of pretreating, a stream obtained from the pretreated lignocellulosic feedstock, a stream obtained from the neutralized feedstock, a stream obtained from the sugar stream, or a combination of these streams. The inorganic salt may be concentrated, clarified, recovered and purified by crystallization, electrodialysis drying, or agglomeration and granulation, and then used as desired, for example as a fertilizer.

Abstract: The invention relates to methods and kits for detecting enzyme activity using bioluminescence. In particular, it relates to a novel assay system with increased light yield for a sensitive and convenient detection of luciferase activity, such as luciferase reporter enzyme activity. Provided is a method of detecting luciferase activity in a sample, comprising incubating the sample in the presence of luciferin and ATP to allow the generation of a light signal, wherein said light signal is enhanced by performing the incubation in a reaction mixture comprising phosphate and ammonium ions, and measuring the light signal. The invention also relates to kits for use in such method.

Abstract: Method for producing ethanol from solid citrus waste by reducing the concentration of limonene in citrus waste to allow fermentation. In one embodiment ground solid citrus waste is partially hydrolyzed and pasteurized by heating using a jet cooker and then injected into a flash tank to remove limonene. The heated citrus waste is then cooled, hydrolyzed with enzymes and fermented to ethanol. The remaining solids and liquids may be processed further to yield other byproducts. More particularly, the solids may be dried and pressed for use in cattle feed and the liquids may be further fermented or processed to yield additional ethanol, acetate, galacturonic acid monomers and polymers, five carbon sugars and other products.

Abstract: The invention, in one aspect, provides a strip for tear collection. The strip has a first end and an opposite second end and preferably has substantially uniform cross-sections from the first end to the second end. The strip is made of a hydrogel material in substantially dry state. The strip is characterized by having a substantially uniform swelling along the hydrogel strip from the first end to the second end when fully wicked by a tear fluid and by having a correlation between the volume of tear uptake by said strip and the length of the wicked end portion of said strip. A strip of the invention is useful for assay of an analyte of interest in a tear fluid. The invention also provides a method and kits for assaying an analyte of interest (e.g., lactoferrin, glucose, herpes simplex virus, hormones, etc.).

Abstract: There is provided a flow cell assembly in which a shuttle supports and positions a capillary with its end extending beyond the shuttle. The flow cell assembly facilitates the replacement of a flow cell which is damaged or with flow cells having capillaries of different size or shape.

Abstract: The invention concerns a device and a method for ultrasensitive detection comprising an electrically inert porous sheet sandwiched between two positively charged fine electrodes. The invention uses the capacity of the electrodes, resulting from their powerful electrostatic properties, for sensing marked antibody complexes related to antigens detected in the sample, and to leave marked antibodies non-complexed with said antigens free. The method consists in depositing a sample droplet on the porous material sheet upstream of the electrodes and in detecting downstream of the electrodes, in a signal-zone, the possible presence of an antigen-antibody complex which has diffused in the porous material. The invention is useful for detecting some millipicogrammes of antigen per milliliter of sample.

Abstract: The present invention relates to ionic electrodes, particularly microelectrodes and electrode arrays, and also relates to fabrication methods for such electrodes. In particular, the present invention relates to planar polymer electrodes for making patch clamp measurements of ionic currents through biological membranes, such as the plasma membranes of living cells. The electrodes of the present invention are useful for measuring individual and multisite cell membrane currents and voltages, as well as in high-throughput screening procedures.

Abstract: Fiberless optical sensors (plasticized PVC, acrylamide or gold particles) are described having a size ranging from between approximately 1 micrometer and 1 nanometer in diameter. The sensors comprise ionophores useful for the detection of intracellular analytes.

Abstract: The present invention relates to methods and compositions for the direct detection of analytes using observable spectral changes in biopolymeric systems. In particular, the present invention allows for the direct colorimetric detection of analytes using color changes that occur in glycopolythiophene polymer systems in response to selective binding of analytes.