Abstract: A linear transform can be performed using a passive analog multi-stage charge re-use linear transform circuit. The passive analog multi-stage charge re-use linear transform circuit transforms an input analog circuit to generate a transformed analog output signal. The passive analog multi-stage charge re-use linear transform circuit may be included in a software defined radio (SDR), where the transformed analog output signal may be output to an analog-to-digital converter (ADC) of the SDR device so as to enable the ADC to perform wideband spectrum sensing. The passive analog multi-stage charge re-use linear transform circuit may also be included in a beamforming device so as to enable the device to perform spectral shifting and spatial shifting of signals. This passive analog multi-stage charge re-use linear transform circuit may promote reduced power consumption in comparison to other circuits while also supporting wideband applications at high sampling rates.

Abstract: Devices, methods and kits which, when installed or used, access, aspire, dilate, insufflate, drain or deliver fluid medicaments to, or place a patency device within a sinus area, such as a maxillary sinus or a maxillary sinus ostium. The device can include a hollow catheter and probe, and can be configured to permit gradual and incremental probe extension. The device can be constructed to enhance the precision and maneuverability within the nasal and sinus passageways, while also accommodating the natural anatomical geometry of a targeted paranasal treatment site. For example, the present treatment and placement device can accomplish access to the maxillary sinus ostium by utilizing an uncinate process to guide a probe tip into the ostium in a retrograde manner. The probe can be slidably, bi-directionally or co-axially positioned within the catheter. A distal portion of the probe can be biased away from a longitudinal axis of the catheter.

Abstract: Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter applies a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO.

Abstract: A bioactive composition includes a porous hydrogel matrix. At least one protein is immobilized in the porous hydrogel matrix forming a hydrogel protein composite that is stable in an organic solvent. A process for stabilizing a bioactive composition includes the steps of: forming hydrogel matrix pores around protein molecules and reducing water content within the hydrogel matrix pores forming a hydrogel protein composite that is stable in an organic solvent.

Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.

Abstract: A photovoltaic device includes a first layer to generate excitons upon absorption of incident photons, the first layer having a first organic material diluted in a second different material, in which a highest occupied molecular orbital (HOMO) of the first organic material is closer to a vacuum level than a HOMO of the second different material, and a lowest unoccupied molecular orbit (LUMO) of the first organic material is farther from the vacuum level than a LUMO of the second different material.

Abstract: In various embodiments, the present invention provides a reaction chamber, including a catalyst, and a heating chamber configured to receive light. The heating chamber is positioned underneath at least a portion of the reaction chamber.

Abstract: The invention provides a compound of formula (I), wherein R1-R6 and X have any of the values described, as well as pharmaceutical compositions comprising such compounds and therapeutic methods comprising the administration of such compounds.

Abstract: Certain embodiments of the present invention provide functionalized nanoparticles and methods of use thereof. Certain embodiments provide nanoparticles functionalized with streptokinase. Certain embodiments of the present invention provide methods for treating a pathological fibrin associated disorder (e.g., cancer) in an animal.

Abstract: The invention provides methods for cyclizing poly-yne compounds under mild conditions to provide cyclic compounds.

Abstract: Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter appliex a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO.

Abstract: A substrate or coating is provided that includes a lipase with enzymatic activity toward a component of a fingerprint. Also provided is a process for facilitating the removal of fingerprints is provided wherein an inventive substrate or coating including a lipase is capable of enzymatically degrading of one or more components of the fingerprint to facilitate fingerprint removal from the substrate or said coating. Applying heat to the substrate or coating increases the rate of fingerprint removal.

Abstract: Thermochemical ablation techniques may provide ablation of bodily tissue using chemical reaction energy.

Abstract: The present invention relates to stable cyanuric acid hydrolase enzymes, compositions, and devices for use in the treatment of a liquid, such as water. The present invention also relates to methods of using these enzymes, compositions and devices for the treatment of a liquid, such as water.

Abstract: The invention provides for methods and materials to decellularize a solid organ and to recellularize such a decellularized organ to thereby generate a solid organ.

Abstract: In general, this disclosure describes various optical ultrasound transducers and methods of producing such. As one example, an optical ultrasound transducer comprises an optical fiber and a polymer layer formed on the optical fiber to receive light from the optical fiber. The polymer layer may absorb light of a first wavelength and be substantially transparent to light of a second wavelength. In response to the light of the first wavelength, the polymer layer may generate an acoustic tone. The optical ultrasound transducer may further include an optical detector formed on the polymer layer, the optical detector comprising an etalon structure having a first mirror layer and a second mirror layer separated by a compressible layer, wherein the compressible layer resonates in response to the light of the second wavelength passing through the polymer layer and is compressible in response to acoustic pressure from echoes of the acoustic tone.

Abstract: A number of spinal stabilization devices are disclosed for aligning and fixing vertebrae during surgery, e.g. to facilitate accurate placement of pedicle screws. One stabilization device includes a pair of spiked rails biased to clamp shut and thereby passively engage a number of vertebrae. Another stabilization device includes a tie-rod that connects two or more fiducial markers, each of which is connected to a vertebra, to stabilize the vertebrae including and between each vertebra to which the markers are attached.

Abstract: A pedicle screw driver bit includes an elongated shank and a head. The shank includes a plurality of threads. The head is connected to one end of and configured to rotate relative to the shank. The head is configured to be received by a tulip connected to a pedicle screw. The threads of the shank are configured to engage a plurality of threads of the tulip such that when the shank is rotated the tulip is drawn into engagement with the head such that the shank, the head, the tulip, and the pedicle screw are substantially prevented from rotating relative to one another.

Abstract: Techniques and systems for decoding optical codes using symbol-based algorithms are described. In one example, a method includes acquiring a signal representative of light reflected from an optical code comprising one or more symbols of a finite set of symbols and applying a decoding model to the signal. The decoding model may relate measured signals to the finite set of symbols, such that each of the symbols of the finite set of symbols are associated with a respective encoded character of a finite set of encoded characters. The method may also include determining, by a processor, a sequence of one or more of the encoded characters based on the application of the decoding model to the signal. In this manner, the optical code may be decoded by directly fitting an acquired signal from the optical code to possible symbols within the optical code and the associated encoded characters.

Abstract: Novel carbon dioxide-based geothermal energy generation systems, i.e., carbon plume geothermal (CPG) systems, and methods are provided. With the novel systems and methods described herein, geothermal energy can now be provided at lower temperatures and at locations other than hot, dry rock formations, without negatively impacting the surrounding area through use of large-scale hydrofracturing. Use of a carbon dioxide-based geothermal system further provides a means for sequestering and storing excess carbon dioxide, rather than having it released to the atmosphere.