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On the Gorenstein property of the Ehrhart ring of the stable set polytope of an h-perfect graph. (arXiv:2005.03259v1 [math.CO])

In this paper, we give a criterion of the Gorenstein property of the Ehrhart ring of the stable set polytope of an h-perfect graph: the Ehrhart ring of the stable set polytope of an h-perfect graph $G$ is Gorenstein if and only if (1) sizes of maximal cliques are constant (say $n$) and (2) (a) $n=1$, (b) $n=2$ and there is no odd cycle without chord and length at least 7 or (c) $ngeq 3$ and there is no odd cycle without chord and length at least 5.




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The growth rate over trees of any family of set defined by a monadic second order formula is semi-computable. (arXiv:2004.06508v3 [cs.DM] UPDATED)

Monadic second order logic can be used to express many classical notions of sets of vertices of a graph as for instance: dominating sets, induced matchings, perfect codes, independent sets or irredundant sets. Bounds on the number of sets of any such family of sets are interesting from a combinatorial point of view and have algorithmic applications. Many such bounds on different families of sets over different classes of graphs are already provided in the literature. In particular, Rote recently showed that the number of minimal dominating sets in trees of order $n$ is at most $95^{frac{n}{13}}$ and that this bound is asymptotically sharp up to a multiplicative constant. We build on his work to show that what he did for minimal dominating sets can be done for any family of sets definable by a monadic second order formula.

We first show that, for any monadic second order formula over graphs that characterizes a given kind of subset of its vertices, the maximal number of such sets in a tree can be expressed as the extit{growth rate of a bilinear system}. This mostly relies on well known links between monadic second order logic over trees and tree automata and basic tree automata manipulations. Then we show that this "growth rate" of a bilinear system can be approximated from above.We then use our implementation of this result to provide bounds on the number of independent dominating sets, total perfect dominating sets, induced matchings, maximal induced matchings, minimal perfect dominating sets, perfect codes and maximal irredundant sets on trees. We also solve a question from D. Y. Kang et al. regarding $r$-matchings and improve a bound from G'orska and Skupie'n on the number of maximal matchings on trees. Remark that this approach is easily generalizable to graphs of bounded tree width or clique width (or any similar class of graphs where tree automata are meaningful).




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Mortar-based entropy-stable discontinuous Galerkin methods on non-conforming quadrilateral and hexahedral meshes. (arXiv:2005.03237v1 [math.NA])

High-order entropy-stable discontinuous Galerkin (DG) methods for nonlinear conservation laws reproduce a discrete entropy inequality by combining entropy conservative finite volume fluxes with summation-by-parts (SBP) discretization matrices. In the DG context, on tensor product (quadrilateral and hexahedral) elements, SBP matrices are typically constructed by collocating at Lobatto quadrature points. Recent work has extended the construction of entropy-stable DG schemes to collocation at more accurate Gauss quadrature points.

In this work, we extend entropy-stable Gauss collocation schemes to non-conforming meshes. Entropy-stable DG schemes require computing entropy conservative numerical fluxes between volume and surface quadrature nodes. On conforming tensor product meshes where volume and surface nodes are aligned, flux evaluations are required only between "lines" of nodes. However, on non-conforming meshes, volume and surface nodes are no longer aligned, resulting in a larger number of flux evaluations. We reduce this expense by introducing an entropy-stable mortar-based treatment of non-conforming interfaces via a face-local correction term, and provide necessary conditions for high-order accuracy. Numerical experiments in both two and three dimensions confirm the stability and accuracy of this approach.




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How Personalized Landing Pages Can Make Your Site More Profitable

Personalization is one of the most effective marketing techniques to connect with customers online. While the exact methods are different for every business, adding personalized elements to landing pages is a proven method of driving conversions on your site. But why is it so successful? The simple answer is that personalization shows customers that you […]

The post How Personalized Landing Pages Can Make Your Site More Profitable appeared first on WebFX Blog.




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Best match processing mode of decision tables

An input combination of at least one condition value to be evaluated against at least one rule of a decision table is received. The at least one rule includes at least one condition and the rule is associated with a result. The at least one rule is evaluated against the input combination to determine conditions fulfilled for the at least one condition value. In one aspect, a rule from the at least one rule that best matches the input combination is determined and a result associated with the rule that best matches the input combination is outputted.




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Additive process for production of dimensionally stable three dimensional objects

Generally, compositions and methods of producing dimensionally stable three dimensional objects using an additive build up process. Specifically, materials combinable in an additive build up process using a materials printer for the production of stable three dimensional molds useful in the production of molded or formed parts.




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Low-extractable thioxanthones

3-Esters and 3-amides of thioxanthone bearing alkyl chains of appropriate length and can be used as photoinitiators or sensitizers in photopolymerizable systems, in particular for the preparation of coatings compatible with the food use.




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Portable computing device as control mechanism

A portable or mobile computing device, such as a smart phone or portable media player, can be used to control one or more electronic devices over an appropriate wireless channel. In one example, a user can utilize a smart phone as a mouse for a notebook computer or Internet-capable television. The user can move the portable device on a surface and press appropriate selectable elements on the portable device, as if the user is using a wireless mouse. The portable device can send the commands over the wireless channel to the electronic device, which can provide inputs and/or control signals to the electronic device. In some embodiments, the user can take advantage of the processing capability of the portable device to work directly with elements such as a wireless keyboard and wireless monitor, without the need for a notebook or other such computing element therebetween.




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Ultrastable particle-stabilized foams and emulsions

Described is a method to prepare wet foams exhibiting long-term stability wherein colloidal particles are used to stabilize the gas-liquid interface, said particles being initially inherently partially lyophobic particles or partially lyophobized particles having mean particle sizes from 1 nm to 20 μm. In one aspect, the partially lyophobized particles are prepared in-situ by treating initially hydrophilic particles with amphiphilic molecules of specific solubility in the liquid phase of the suspension.




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Client-allocatable bandwidth pools

Methods and apparatus for client-allocatable bandwidth pools are disclosed. A system includes a plurality of resources of a provider network and a resource manager. In response to a determination to accept a bandwidth pool creation request from a client for a resource group, where the resource group comprises a plurality of resources allocated to the client, the resource manager stores an indication of a total network traffic rate limit of the resource group. In response to a bandwidth allocation request from the client to allocate a specified portion of the total network traffic rate limit to a particular resource of the resource group, the resource manager initiates one or more configuration changes to allow network transmissions within one or more network links of the provider network accessible from the particular resource at a rate up to the specified portion.




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Enhanced instruction scheduling during compilation of high level source code for improved executable code

Systems and methods for static code scheduling are disclosed. A method can include receiving an intermediate representation of source code, building a directed acyclic graph (DAG) for the intermediate representation, and creating chains of dependent instructions from the DAG for cluster formation. The chains are merged into clusters and each node in the DAG is marked with an identifier of a cluster it is part of to generate a marked instruction DAG. Instruction DAG scheduling is then performed using information about the clusters to generate an ordered intermediate representation of the source code.




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Portable communication device for providing phone calling service

A portable communication device for phone calling is herein disclosed and enabled. The portable communication device includes a USB interface for connecting to an external USB port of a computing device for enabling phone calling services using the portable communication device. Upon connecting the portable communication device to the external USB port of the computing device, a phone calling software component or data stored in the portable communication device may execute for enabling phone calling services. The portable communication device may also include one or more ports, and may include an interface for Ethernet connection for connecting to the Internet and for making phone calls without the need for connecting the portable communication device to the external USB port. The portable communication device may further include a Wi-Fi wireless component for local wireless communication, and may be implemented as an adapter-sized dongle for providing phone calling services.




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System and method for identifying exploitable weak points in a network

The system and method described herein may leverage passive and active vulnerability discovery to identify network addresses and open ports associated with connections that one or more passive scanners observed in a network and current connections that one or more active scanners enumerated in the network. The observed and enumerated current connections may be used to model trust relationships and identify exploitable weak points in the network, wherein the exploitable weak points may include hosts that have exploitable services, exploitable client software, and/or exploitable trust relationships. Furthermore, an attack that uses the modeled trust relationships to target the exploitable weak points on a selected host in the network may be simulated to enumerate remote network addresses that could compromise the network and determine an exploitation path that the enumerated remote network addresses could use to compromise the network.




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Watch adaptable to being worn on the wrist and around the neck

The case (1) of the watch carries, along its periphery (5), hooking members in the form of rings (6a, 6a', 6b, 6b', 6c, 6c'), these rings being disposed radially relative to the center (7) of the dial (2) and hence of the watch. A chain (8) is fixed by loops (9, 10) at its ends to two (6c, 6c') of these rings and passes through the other rings (6a, 6a', 6b, 6b'), passing several of times around the wearer's wrist. After the loops (9, 10) have been detached from their respective rings, the chain (8) can be passed in a different manner around the case, so that the watch can be hung around the neck. In order to make this change, the chain is equipped with a flat link (13) which can pass through radial slots provided in the periphery of the rings.




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Combined table lamp and clock assembly

A combined table lamp and clock assembly includes a lamp unit and a clock unit. The lamp unit includes a lamp stand base, a lamp stand, and a lamp bulb holder. The lamp stand base has a top side formed with a cavity, and a bottom side adapted to be placed on a table top. The lamp stand extends uprightly from the lamp stand base, and has an upper end portion and a lower end portion that is mounted on the top side of the lamp stand base. The lamp bulb holder is mounted on the upper end portion of the lamp stand, and is adapted for mounting a lamp bulb thereon. The clock unit includes a clock base, an upright clock panel, and a clock mechanism. The clock base is received in the cavity in the top side of the lamp stand base, and is formed with an insert slot therethrough. The upright clock panel has a lower end formed with an insert portion that is inserted removably into the insert slot. The clock mechanism is mounted on the clock panel.




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Portable self contained light generating device powered by a flow of falling granular material

A portable self contained light generating device which is powered by a flow of granular material falling under the influence of gravity to impinge upon and cause a paddle wheel to rotate thereby turning a small generator producing electricity to power one or more light emitting diodes for illumination. The device equipped with a multi-position power/illumination control switch and in some embodiments also provided with a battery providing supplemental power.




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Prefetch optimizer measuring execution time of instruction sequence cycling through each selectable hardware prefetch depth and cycling through disabling each software prefetch instruction of an instruction sequence of interest

A prefetch optimizer tool for an information handling system (IHS) may improve effective memory access time by controlling both hardware prefetch operations and software prefetch operations. The prefetch optimizer tool selectively disables prefetch instructions in an instruction sequence of interest within an application. The tool measures execution times of the instruction sequence of interest when different prefetch instructions are disabled. The tool may hold hardware prefetch depth constant while cycling through disabling different prefetch instructions and taking corresponding execution time measurements. Alternatively, for each disabled prefetch instruction in the instruction sequence of interest, the tool may cycle through different hardware prefetch depths and take corresponding execution time measurements at each hardware prefetch depth. The tool selects a combination of hardware prefetch depth and prefetch instruction disablement that may improve the execution time in comparison with a baseline execution time.




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Extraction solvent control for reducing stable emulsions

Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.




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Stable capsule suspension of clomazone

A storage stable capsule suspension formulation comprising clomazone encapsulated within a polymeric shell wall of microcapsules, a process for the preparation thereof and method of controlling weeds utilizing said formulation.




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Molecular flux rates through critical pathways measured by stable isotope labeling in vivo, as biomarkers of drug action and disease activity

The methods described herein enable the evaluation of compounds on subjects to assess their therapeutic efficacy or toxic effects. The target of analysis is the underlying biochemical process or processes (i.e., metabolic process) thought to be involved in disease pathogenesis. Molecular flux rates within the one or more biochemical processes serve as biomarkers and are quantitated and compared with the molecular flux rates (i.e., biomarker) from control subjects (i.e., subjects not exposed to the compounds). Any change in the biomarker in the subject relative to the biomarker in the control subject provides information to evaluate therapeutic efficacy of an administered drug or a toxic effect and to develop the compound further if desired. In one aspect of the invention, stable isotope-labeled substrate molecules are administered to a subject and the label is incorporated into targeted molecules in a manner that reveals molecular flux rates through metabolic pathways of interest.




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Imagewise priming of non-D2T2 printable substrates for direct D2T2 printing

A method for enabling D2T2 printing onto non-D2T2 printable substrates uses a diffusible primer material provided on a dye-sheet or ribbon. The primer comprises a polymer, a release agent and a plasticizer. The release agent and the plasticizer are diffused into the substrate, while the polymer remains on the dye-sheet or ribbon. Printing of the primer onto the PC substrate is controlled via a computer image program corresponding to a colored image. This computer image program also controls the printing of the colored image at the primed locations. Accordingly, image-wise treatment of a plastic material via the primer selectively renders the PC substrate surface D2T2 printable at the point of personalization, providing for a 100% PC full card body having the colored image.




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Patient selectable joint arthroplasty devices and surgical tools

Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.




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Autonomous intracardiac implantable medical device with releaseable base and fastener element

An intracorporeal autonomous active medical device having a capsule body and a base. The capsule body includes a body portion and a lid portion, and the capsule body contains therein electronic circuitry containing the active elements of the autonomous medical device, and a power supply. The capsule body also includes a fastening system on an exterior surface of the capsule body that is configured to correspond with a fastening mechanism on the base configured to be anchored to a tissue wall. The fastening mechanism provides selective engagement between the capsule body and the base.




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System and method for implantable medical device lead shielding

An implantable medical device (IMD) can include a cardiac pacemaker or an implantable cardioverter-defibrillator (ICD). Various portions of the IMD, such as a device body, a lead body, or a lead tip, can be provided to reduce or dissipate a current and heat induced by various external environmental factors. According to various embodiments, features can be incorporated into the lead body, the lead tip, or the IMD body to reduce the creation of an induced current, or dissipate the induced Current and heat created due to an induced current in the lead. For example, an IMD can include at least one outer conductive member and a first electrode. The first electrode can be in electrical communication with the at least one outer conductive member. The first electrode can dissipate a current induced in the at least one outer conductive member via a first portion of the anatomical structure.




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Retractable screw intracardiac lead for cardiac stimulation and/or defibrillation

A retractable screw-type stimulation or defibrillation intracardiac lead is disclosed. According to one embodiment, the lead comprises a flexible hollow sheath (12) having at its distal end a lead head (10) and a connector (66) at its proximal end. The connector comprises a pin (62) connected to a lead head electrode (18). The lead head comprises a tubular body (28), at least one electrode (18, 20) for stimulation or defibrillation, a moving element translationally and rotationally moving within the tubular body in a helical motion, an anchoring screw (24) axially moving with respect to the tubular body, and a deployment mechanism (22) to deploy the anchoring screw out of the tubular body (28). The lead is a co-radial type, and the moving element (26) secured to the anchoring screw is connected to the tubular body (28) by a helical guide (46) and a coupling finger (56) protruding between two successive turns of the helical guide (46) for transforming a rotary movement imparted to the lead body in a deployment or retraction movement of the moving element (26). The helical guide (46) is resiliently compressible, with a free end (52) with a flat area (54) facing a flange (38) in vis-à-vis, so as to pinch the coupling finger (56) and to perform the function of a clutch limiting the torque transmitted to the anchoring screw by the rotation of the lead body, even in case of continuation of this rotation.




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Implantable device having an integrated ceramic bushing

One aspect relates to a housing for an active implantable medical device, whereby the housing, at least parts thereof, includes an electrically insulating ceramic material, and has at least one electrically conductive conducting element, whereby the at least one conducting element is set up to establish at least one electrically conductive connection between an internal space of the housing and an external space. One aspect provides the at least one conducting element to include at least one cermet, whereby the housing and the at least one conducting element are connected in a firmly bonded manner.




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Signal analysis in implantable cardiac treatment devices

Methods and devices for cardiac signal analysis in implantable cardiac therapy systems. Several signal processing and/or conditioning methods are shown including R-wave detection embodiments including the use of thresholds related to previous peak amplitudes. Also, some embodiments include sample thresholding to remove extraneous data from sampled signals. Some embodiments include weighting certain samples more heavily than other samples within a sampled cardiac signal for analysis.




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Implantable system for flow measurement including charge amplifier

An implantable medical device lead having a flow measurement sensor mounted thereon is provided with a capsule mounted proximate to the sensor. The capsule is used to house electrical circuitry corresponding to the sensor in order to prevent impedance on conductors of the lead, which gradually decreases over chronic periods, from directly affecting signal transmission between the sensor and the electrical circuitry. The electrical circuitry includes a charge amplifier used for processing signals from the sensor. In some cases, the amplifier can be initially calibrated and periodically tuned so as to have consistent functioning with the sensor over chronic periods.




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Methods for promoting intrinsic activation in single chamber implantable cardiac pacing systems

Cardiac pacing methods for an implantable single chamber pacing system, establish an offset rate for pacing at a predetermined decrement from either a baseline rate (i.e. dictated by a rate response sensor), or an intrinsic rate. Pacing maintains the offset rate until x of y successive events are paced events, at which time the offset rate is switched to the baseline rate for pacing over a predetermined period of time. Following the period, if an intrinsic event is not immediately detected, within the interval of the offset rate, the rate is switched back to baseline for pacing over an increased period of time. Some methods establish a preference rate, between the offset and baseline rates, wherein an additional criterion, for switching from the offset rate to the baseline rate, is established with respect to the preference rate.




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Implantable head mounted neurostimulation system for head pain

An implantable head-mounted unibody peripheral neurostimulation system is provided for implantation in the head for the purpose of treating chronic head pain, including migraine. The system may include an implantable pulse generator (IPG) from which multiple stimulating leads may extend sufficient to allow for adequate stimulation over multiple regions of the head, preferably including the frontal, parietal and occipital regions. A lead may include an extended body, along which may be disposed a plurality of surface metal electrodes, which may be sub-divided into a plurality of electrode arrays. A plurality of internal metal wires may run a portion of its length and connect the IPG's internal circuit to the surface metal electrodes. The IPG may include a rechargeable battery, an antenna, and an application specific integrated circuit. The IPG may be capable of functional connection with an external radiofrequency unit for purposes that may include recharging, diagnostic evaluation, and programming.




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Implantable medical devices and systems having power management for recharge sessions

Implantable devices and related systems utilize power management features in conjunction with a recharge circuit that includes a coil and capacitance. The reactance such as the capacitance and/or inductance may be variable such that in the event of an overcharge condition, the reactance may be varied to change the resonant frequency of the circuit of the coil from the recharge frequency to another frequency to reduce the power being received. Other power management features may additionally or alternatively be employed. For instance, the device may send an uplink telemetry signal to an external device to request that recharge power be decreased. The device may switch additional resistance into the circuit of the coil to reduce the Q of the circuit. As another example, the device may clamp the circuit of the coil to ground.




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Minimizing interference between charging and telemetry coils in an implantable medical device

An improved implantable pulse generator (IPG) containing improved telemetry circuitry is disclosed. The IPG includes charging and telemetry coils within the IPG case, which increases their mutual inductance and potential to interfere with each other; particularly problematic is interference to the telemetry coil caused by the charging coil. To combat this, improved telemetry circuitry includes decoupling circuitry for decoupling the charging coil during periods of telemetry between the IPG and an external controller. Such decoupling circuitry can comprise use of pre-existing LSK circuitry during telemetry, or new discrete circuitry dedicated to decoupling. The decoupling circuitry is designed to prevent or at least reduce induced current flowing through the charging coil during data telemetry. The decoupling circuitry can be controlled by the microcontroller in the IPG, or can automatically decouple the charging coil at appropriate times to mitigate an induced current without instruction from the microcontroller.




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Low loss band pass filter for RF distance telemetry pin antennas of active implantable medical devices

A hermetic terminal for an active implantable medical device (AIMD), includes an RF distance telemetry pin antenna, a capacitor conductively coupled between the antenna and a ground for the AIMD, and an inductor electrically disposed in parallel with the capacitor and conductively coupled between the antenna and a ground for the AIMD. The capacitor and the inductor form a band pass filter for attenuating electromagnetic signals through the antenna except at a selected frequency band. Values of capacitance and inductance are selected such that the band pass filter is resonant at the selected frequency band. In an alternative form, the band pass filter is coupled in series with the telemetry pin antenna for attenuating MRI signals of a selected frequency band.




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Implantable electrode and method of making the same

The implantable electrode system of the preferred embodiments includes a conductor, an interconnect coupled to the conductor, an insulator that insulates the interconnect, and an anchor that is connected to both the conductor and the insulating element. The anchor is mechanically interlocked with at least one of the conductor and the insulator.




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Portable roller massager

The present invention provides in some embodiments, a portable device for massaging and treating a person's muscles. The device can include an elongate center shaft and a roller section rotatably positioned about the outer surface of the elongate cylindrical center shaft and extending at least a portion of a distance between the first end of the elongate cylindrical center shaft and the second end of the elongate cylindrical center shaft. The device can also include a first and second handle coupled to the elongate center shaft. The first and second handles can be configured to collapse in order to decrease an overall length of the portable roller massager.




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Adjustable tremolo tail piece

A stringed musical instrument comprises means by which the relation between displacement of a hinged string mounting member, such as a tremolo tail piece on which the tuners of the instrument are disposed, and the alteration of pitch of the strings thereof can be adjusted for each of the strings independently of the others. According to another feature of the invention the linear tuner blocks may be selectively released from engagement with the adjuster screws thereof for facilitating quick string mounting operations.




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Portable electronic musical keyboard instrument

A portable electronic musical device has a keyboard disposed in a housing connected to a strap and a support plate connected thereto for suspension of housing by strap on shoulders of a person while housing is simultaneously supported on waist of person to allow person to easily move from one geographical position to another while playing instrument. Housing is pivotally connected to support plate by at least one member defining an axis around which housing is rotatable to playing of instrument and to facilitate viewing of hands of person and keys of keyboard while user is playing instrument. To further facilitate playing of instrument and visibility of hands and keys housing is curved with keyboard generally aligned therewith.




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Multi-component mixing system having a rotatable container and container therefor

A container (10, 30, 50) is provided for single- or multi-component molding materials. The container has a container body (12, 32, 52) having a constant outer contour in a longitudinal extent of the container (10, 30, 50), a piston (17, 37) movable in the longitudinal direction, and a cover (11, 31) having an outlet opening (13, 33, 53). A volume for a molding material is defined between the piston (17, 37) and the cover (11, 31), the volume being variable in the direction of the longitudinal extent of the container (10, 30, 50). The container distinguishes itself in that the container body (12, 32, 52) is rotatable relative to the outlet opening (13, 33, 53), and the piston (17, 37) thereby pushes out the content of the container (10, 30, 50).




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Compact, portable blender system

A compact portable blender system features a base unit. A base unit top surface features a recess having an “L” shaped locking slot and a motor with a drive gear. A base unit bottom surface features a removable power supply. The base unit features a power charger, a removable cord, a cord storage cavity, a power switch, and a power indicator. The system features a blending container. A blending blade unit is located on a container bottom. A blade drive gear located on a blending blade unit bottom and a blending blade is located on a blending blade unit top. The blending blade unit features a locking tab located on a blending blade unit side wall. The system features a container lid having an aperture. The container lid features a cover located over the aperture on a container lid top.




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Locking system for adjustable telescopic props

A locking device for preventing unauthorized retraction of a telescopic prop is made up of an adjustable clamp which can be fitted round the outer circumference of the prop together with a fastener for tightening the clamp, such as a nut and bolt with anti-tamper heads and a shield to prevent access to the head with a gripping instrument. The device can be placed around the outer circumference of an extended prop adjacent to the collar such that once the clamp is tightened the collar is sandwiched between the locking device and the pin. Alternatively the device can be placed around the outer circumference of the inner tube of the prop adjacent to and abutting the end of the outer tube of the prop in order to prevent unauthorized retraction of the prop.




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Apparatus and method of reacting polymers passing through metal ion chelated resin matrix to produce injectable medical devices

The present disclosure relates to an apparatus and process for forming medical devices from an injectable composition. The apparatus includes a supply assembly configured to maintain and selective dispense a first precursor and a second precursor, a mixing assembly configured to mix the first and second precursors, and at least one catalyzing element including a transition metal ion to aid in the polymerization of the first and second precursors. The process includes dispensing a volume of the first precursor and a volume of the second precursor into a mixing assembly and mixing the first and second precursors. The first and second precursors each possess a core and at least one functional group known to have click reactivity with each other. The mixed precursors are contacted with a transition metal catalyst to produce a flowable composition for use as a medical device.




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Storage-stable aqueous solutions of chlorine dioxide and methods for preparing and using them

The present invention is for extremely pure solutions of chlorine dioxide, methods for making such solutions and to compositions and methods for storing, shipping and using such solutions. Generally, the chlorine dioxide solutions of the invention are aqueous solutions containing about 2500 ppm or less of total impurities. The chlorine dioxide solution can be prepare by passing dilute highly pure chlorine gas through a bed of substantially solid sodium chlorite and contacting the resulting chlorine dioxide gas with a liquid.




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Power conversion system with adjustable frequency

A power conversion system with adjustable frequency includes an electric transformer, a pulse width modulation driving controller, a switching transistor, a first and second voltage division resistors connected in series, an output diode and an output capacitor. The electric transformer receives the input power and generates the sensing current and induced current. The sensing current flows through the first and second voltage division resistors to generate the feedback signal. The induced current flows through the output diode and output capacitor to generate the output voltage to supply the load. The pulse width modulation driving controller determine whether the loading state of the load based on the feedback signal, and change the switching frequency according to the loading state and the input power, thereby increasing the whole efficiency of the power conversion system and achieving the aim of dynamically adjusting the optimal frequency.




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Heater to keep reader head in stable temperature range

Technologies are described herein for utilizing a head heater to test temperature stability of a head of a storage device and to prevent the head from operating in an unstable temperature condition. A first power level may be applied to a head heater of a head in a storage device, the first power level configured to simulate a temperature condition in the head. An instability of the head is determined and the temperature condition and the instability of the head are recorded in a memory. The process may be repeated to develop a range of temperature conditions in which the head exhibits instability. The range of temperature conditions and the head heater may then be utilized to prevent the head from operating in an unstable temperature condition during normal operation.




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System, portable electronic device, and method for peer-to-peer communication of media

A wireless media player and a related system and methodology are disclosed. One aspect of the wireless media player system pertains to a virtual connector system, apparatus, and method for the automatic establishment of wireless connectivity with other electronic devices. In one embodiment, the media player device employs the use of integrated Radio Frequency Identification (RFID) technology to exchange communication settings, media capability, and other parameters with an external device that also has integrated RFID technology. The automatic exchange of settings and other information via a proximity-based RFID data exchange allows a media player to quickly establish a secure communication link with another device via a commonly supported wireless protocol such as Ultra Wideband (UWB) or Bluetooth. Another aspect of the media player system pertains to a method of using the captured media capability of the connecting device to customize certain menu options and software parameters in the media player.




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Adjustable immobilizing joint brace

An adjustable immobilizing joint brace has a pair of opposed, spaced apart first supports for supporting and immobilizing a joint. Each first support has a pair of first joint holes proximate a first end. One of the holes of the pair of first joint holes is spaced further from the first end of the first support than the other hole. A pair of opposed, spaced apart second supports has two opposed sides. Each second support has a pair of second joint holes proximate a joint end. The pair of second joint holes can be aligned with and attached to the pair of first joint holes on either side of the first support to form different angles of attachment between the first supports and the second supports depending on the orientation of the first supports relative to the orientation of the second supports.




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Adjustable hinge

An adjustable hinge having a first support arm, a second support arm, and a deformable insert that is between the first support arm and the second support arm.




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Catalyst compositions for conversion of vegetable oils to hydrocarbon products in the diesel boiling range and process of preparation thereof

The present invention relates to a catalyst composition for conversion of vegetable oils to hydrocarbon products in the diesel boiling range, comprising a porous support; Group III A or VA element in the range of 1-10 wt %; Group VI B elements in the range of 1 to 20 wt %; Group VIII B elements in range of 0.01 to 10 wt %. The present invention further provides the process for preparing the catalyst composition for conversion of vegetable oils to hydrocarbon products in the diesel boiling range. The present invention also provides the process for conversion of vegetable oils to hydrocarbon products in the diesel boiling range using the catalyst composition or discarded refinery spent hydro-treating catalyst.




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Stable reactive thermosetting formulations of reducing sugars and amines

The present invention provides stable aqueous thermosetting binder compositions having a total solids content of 15 wt. % or higher, preferably, 20 wt. % or higher, and having extended shelf life comprising one or more reducing sugar, one or more primary amine compound, and one or more stabilizer acid or salt having a pKa of 8.5 or less. The total amount of stabilizer used may range from 5 to 200 mole %, based on the total moles of primary amine present in the binder. The stabilizer may be an organic stabilizer chosen from a monocarboxylic acid, a dicarboxylic acid, a fatty acid, an acid functional fatty acid ester, an acid functional fatty acid ether, or an inorganic stabilizer chosen from a mineral acid, a mineral acid amine or ammonia salt, and a Lewis acid, and mixtures thereof. The compositions can be used to provide binders for substrate materials including, for example, glass fiber.




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System and method to electrically charge implantable devices

An implantable device having a power source is provided. The power source uses reverse electrowetting technology to generate a charge to power the implantable device. The power source includes a flexible, non-conductive substrate having a first side and a second side opposite the first side with a channel between the first and second sides. Electrodes are arranged about the channel in a predefined pattern. A liquid is contained in the channel. The liquid includes a dielectric liquid and a conductive liquid that do not mix. The electric change is generated by moving the liquid back and forth across the electrodes. The force to pump or move the liquid is provided by organic means, such as, for example, the change in blood pressure between systolic and diastolic, the expansion and contraction of an organ, or the movement of a muscle.