Abstract: A flow control device configured to be positioned in a reactor core. The flow control device including a central shaft and at least one blade extending helically from the central shaft. A nuclear reactor and related systems and methods are also disclosed.

Abstract: A method of forming a heat exchanger including selecting process parameters for a directed energy deposition (DED) additive manufacturing process for forming a housing and channels within the housing of a heat exchanger and forming the channels within the housing using the process parameters of the DED additive manufacturing process. The inner walls of the channels have hydrophobic or superhydrophobic surface properties, and the inner walls of the channels exhibit an as-fabricated surface roughness factor within a range from about 1.0 to about 2.5. A heat exchanger and a reactor assembly comprising a nuclear reactor and a heat exchanger are also disclosed.

Abstract: Flow meters may include a body defining a fluid channel therein. At least one structure may be positioned within the fluid channel, and fixed relative to the body, that is shaped and positioned to produce a flow-induced vibration that varies according to a rate of fluid flow through the fluid channel. A method of measuring a fluid flow rate may include directing a fluid over a first structure located in a first channel, and producing a first flow-induced vibration that varies according to a rate of fluid flow in a first channel with the first structure. The method may further include measuring the vibration of a remote structure coupled to the first channel, and determining the rate of fluid flow in the first channel from the measured vibration.

Abstract: A hardware sensor system comprising a piezo sensor outputting charge data corresponding to a motion, an insulated cable from the piezo sensor to a receiver, to transmit the charge data, an insulated charge to voltage converter on the receiver, the insulated charge to voltage converter converting the charge data to voltage data, an analog-to-digital converter to convert the voltage data to digital data, and an uploader to upload the data to a server for processing.

Abstract: Methods and materials for modulating low-nitrogen tolerance levels in plants are disclosed. For example, nucleic acids encoding low nitrogen tolerance-modulating polypeptides are disclosed as well as methods for using such nucleic acids to transform plant cells. Also disclosed are plants having increased[RCL2] low-nitrogen tolerance levels and plant products produced from plants having increased low-nitrogen tolerance levels.

Abstract: A flow control device configured to be positioned in a reactor core. The flow control device including a central shaft and at least one blade extending helically from the central shaft. A nuclear reactor and related systems and methods are also disclosed.

Abstract: A fluid flow simulation device may include a heating chamber configured to heat a conductive fluid with one or more electrodes. The fluid flow simulation device may also include a heat exchanger positioned over the heating chamber and a downcomer coupled between an outlet of the heat exchanger and a bottom of the heating chamber.

Abstract: Flow meters may include a body defining a fluid channel therein. At least one structure may be positioned within the fluid channel, and fixed relative to the body, that is shaped and positioned to produce a flow induced vibration that varies according to a rate of fluid flow through the fluid channel. A method of measuring a fluid flow rate may include directing a fluid over a first structure located in a first channel, and producing a first flow induced vibration that varies according to a rate of fluid flow in a first channel with the first structure. The method may further include measuring the vibration of a remote structure coupled to the first channel, and determining the rate of fluid flow in the first channel from the measured vibration.

Abstract: The invention relates to an aircraft structure, the aircraft structure comprising a first component and a second component. A fastening device fastens the first component to the second component, wherein the fastening device comprises a clamping member, and a fastening member. The fastening member has a longitudinal axis, and the clamping member is associated with the first component such that the clamping member is movable in a first direction and is fixed in position in a second direction, the first direction being parallel to the longitudinal axis of the fastener, wherein the fastener extends through the second component into engagement with the clamping member and holds the clamping member against the second component. The fastening device may hold the first component and second component in a fixed position relative to one another, in at least one direction, without applying a clamping force between the first component and second component.

Abstract: The invention relates to an aircraft structure, the aircraft structure comprising a first component and a second component. A fastening device fastens the first component to the second component, wherein the fastening device comprises a clamping member, and a fastening member. The fastening member has a longitudinal axis, and the clamping member is associated with the first component such that the clamping member is movable in a first direction and is fixed in position in a second direction, the first direction being parallel to the longitudinal axis of the fastener, wherein the fastener extends through the second component into engagement with the clamping member and holds the clamping member against the second component. The fastening device may hold the first component and second component in a fixed position relative to one another, in at least one direction, without applying a clamping force between the first component and second component.

Abstract: An electrosurgical apparatus includes an active electrode with a low-work function coating to improve ablation performance. Low-work function coatings include compounds of alkali metals and alkali earth metals. Additionally, the active electrode may include various micro-structures or asperities or nano-structures or asperities. An array of carbon nanotubes may be aligned and secured on the active electrode. A return electrode comprises a high-work function coating to suppress electrical discharge activity on the return electrode.

Abstract: A method of recycling substantially all materials in a major household appliance comprises the steps of placing the appliance on a slip-sheet. Then, the slip-sheet and the appliance are transported along a conveyor system through a plurality of spaced stations. Then various materials are removed from the appliance and stored for recycling or disposal. At least one station has a band saw to saw the appliance into a plurality of pieces. At one station polyurethane foam is removed from the appliance. The removed polyurethane foam is then placed into a bag. The bag containing the polyurethane foam is then sealed, and the sealed bag is then vacuum packed.

Abstract: Apparatus for measuring a physiological parameter of a patient, such as blood pressure, takes a sequence consisting of a predetermined number of individual measurements. The apparatus computes a best estimate of the physiological parameter from values obtained in two or more of the measurements. The apparatus automatically takes a sequence of measurements and then stops. The apparatus can operate unattended so that it is not necessary for a physician or other health care worker to be present while measurements are being made. The use of the invention to measure blood pressure of a patient reduces the effect of “white coat” hypertension on the best estimate. Preferred embodiments of the apparatus ignore results of a first measurement in the sequence. The patient is already familiar with the apparatus when subsequent measurements are taken. This further reduces the possibility that the patient's reaction to the process of measurement will affect the results of the measurement.

Abstract: Apparatus for measuring a physiological parameter of a patient, such as blood pressure, takes a sequence consisting of a predetermined number of individual measurements. The apparatus computes a best estimate of the physiological parameter from values obtained in two or more of the measurements. The apparatus automatically takes a sequence of measurements and then stops. The apparatus can operate unattended so that it is not necessary for a physician or other health care worker to be present while measurements are being made. The use of the invention to measure blood pressure of a patient reduces the effect of “white coat” hypertension on the best estimate. Preferred embodiments of the apparatus ignore results of a first measurement in the sequence. The patient is already familiar with the apparatus when subsequent measurements are taken. This further reduces the possibility that the patient's reaction to the process of measurement will affect the results of the measurement.

Abstract: Apparatus for measuring a physiological parameter of a patient, such as blood pressure, takes a sequence consisting of a predetermined number of individual measurements. The apparatus computes a best estimate of the physiological parameter from values obtained in two or more of the measurements. The apparatus automatically takes a sequence of measurements and then stops. The apparatus can operate unattended so that it is not necessary for a physician or other health care worker to be present while measurements are being made. The use of the invention to measure blood pressure of a patient reduces the effect of “white coat” hypertension on the best estimate. Preferred embodiments of the apparatus ignore results of a first measurement in the sequence. The patient is already familiar with the apparatus when subsequent measurements are taken. This further reduces the possibility that the patient's reaction to the process of measurement will affect the results of the measurement.

Abstract: Disclosed are methods and compositions for removing, inhibiting, or preventing corrosion on metal surfaces within water channels in salt-water cooled internal combustion engines. These methods comprise contacting the metal surfaces with an aqueous mixture of a di- lower alkyl fatty acid amide.

Abstract: A nerve cuff has one or more sets of electrodes for selectively recording electrical activity in a nerve or for selectively stimulating regions of the nerve. Each set of electrodes is located in a longitudinally extending chamber between a pair of longitudinal ridges which project into the bore of the nerve cuff. The ridges are electrically insulating and serve to improve the selectivity of the nerve cuff. The ridges seal against an outer surface of the nerve without penetrating the nerve. Nerve cuffs according to the invention may be used in functional electrical stimulation systems. Electrodes may be replaced with fine tubes to enable pharmacological agents to be delivered selectively through the tubes to portions of a nerve passing through the cuff or to permit the sampling of fluids from regions adjacent selected outer portions of the nerve. The nerve cuff may be constructed of modular segments which can be selected to provide a customized fit to the shape and size of a nerve at time of implantation.

Abstract: A shower curtain support rod assembly which mounts between opposing bathtub stall walls which, when installed, allows a shower curtain to be slidably movable in an inward and outward direction with respect to the longitudinal edge of the bathtub, thereby creating more space for a shower taker. When a shower is not in progress, the shower curtain can be slid inward thereby creating more space in the remaining bathroom area.

Abstract: A perpetual engagement calendar and wallet includes a daily calendar panel having a numbered day pocket for each day in the longest month. Cards indicating all twelve months are provided and at the beginning of each month, a card indicating the name of that month is associated with the day pocket numbered one and all of the other days of that month. As the days pass, this month card is moved down daily to the current day, and the card bearing the name of the next month is positioned adjacent the day pocket numbered one. As engagements are made, memo cards are filled out indicating the day and month of the engagement together with any other information regarding the engagement, and each card is placed in the day pocket associated with that month and that day in such a position that the user can see at a glance the engagements committed to.