368results about How to "Stable design" patented technology

A radiation machine incorporating a diagnostic imaging system is disclosed. The invention provides a very stable design of the machine by supporting an inner gantry part, including a treatment and diagnostic radiation source and detector, by an outer gantry part at two support locations situated at opposite sides of a treatment volume in a patient to be irradiated. This stable gantry design provides a high rotation speed of the inner gantry part relative the outer gantry part around the target volume, which speed is adapted for the high resolution imaging system. Based on the obtained images, changes and developments in tumor tissue and misplacement of patient may be detected. The images may be compared to a reference image to detect any anatomical or spatial difference therebetween. Based on this comparison the settings of the radiation machine may be adapted accordingly.

Arrays containing a transcriptome of a diseased tissue and methods of using the arrays for diagnosis, prognosis, screening, and identification of disease are provided herein. The transcriptome arrays from diseased tissue are useful for diagnosis of a disease by analysis of the genetic profile of a tissue sample specific to a disease state. The genetic profiles are then correlated with data on the effectiveness of specific therapeutic agents. Correlating expression profiles to the effectiveness of therapeutic agents provides a way to screen and select further patients predicted to respond to those therapeutic agents, thereby minimizing needless exposure to ineffective therapy.

A continuous-time domain Decision Feedback Equalizer (DFE) for use in a serial communication channel comprises in one embodiment a summer, a decision circuit, a capture flip-flop (FF) and an N-th order active filter. The DFE and its active filter operate in continuous time to give improved performance over a discrete-time DFE. In one embodiment involving a first-order active filter, the capture FF is outside the continuous-time negative feedback loop of the DFE and involves a differential signal amplifier. In another embodiment, the capture flip-flop is inside the DFE loop, and in a third embodiment the decision circuit comprises a comparator.

A combination static mixer and heat exchanger having heat exchanger tubes (1) which are provided over their circumference with fins (2a, 2b) which have a static mixing effect.

The present disclosure provides a tympanic thermometer including a heat sensing probe defining a longitudinal axis and an outer surface extending from a distal end of the tympanic thermometer. The heat sensing probe includes a sensor housing extending to a distal end thereof. A sensor can is mounted with the sensor housing and a nozzle is mounted onto the sensor housing. The sensor can includes temperature sensing electronics for sensing temperature via the heat sensing probe. The nozzle includes a base disposed with the sensor housing and an elongated cylindrical nose portion disposed about the sensor housing. The nozzle is configured to direct heat flux to the distal end of the heat sensing probe. A probe cover is mountable to the distal end of the tympanic thermometer. The probe cover has an inner surface configured to engage an outer surface of the nozzle. The sensor can preferably include a lip extending radially therefrom and contacting the nozzle at at least one contact point to provide heat flux to the sensor can.

A continuous-time domain Decision Feedback Equalizer (DFE) for use in a serial communication channel comprises in one embodiment a summer, a decision circuit, a capture flip-flop (FF) and an N-th order active filter. The DFE and its active filter operate in continuous time to give improved performance over a discrete-time DFE. In one embodiment involving a first-order active filter, the capture FF is outside the continuous-time negative feedback loop of the DFE and involves a differential signal amplifier. In another embodiment, the capture flip-flop is inside the DFE loop, and in a third embodiment the decision circuit comprises a comparator.

A tampon package includes a tampon assembly sealed within packaging material. The packaging material is continuously sealed about its perimeter to form an internal air-tight chamber for retaining the tampon assembly therein. The tampon package includes a tampon pledget disposed within an applicator barrel. In one embodiment, the packaging material is made from a water-barrier material. The water-barrier material may be a laminate of polyolefin or polyethylene terephthalate and an ethylene vinyl acetate material.

The present invention is directed to an infusion stand for supporting an articles such as an IV bag. In one embodiment, the infusion stand comprises a gas spring engaged with a moveable base assembly. The infusion stand further comprises a foot pedal assembly mounted to the base assembly that is adapted to actuate the gas spring. The infusion stand further comprises an extension arm having one end engaged with the gas spring and the other end to an IV bag support adapted to support one or more IV bags. The infusion stand may further comprise a handle assembly connected to the upper portion of the extension arm. In operation, depression of the foot pedal assembly causes activation of the gas spring which raises the IV bag support to a selected height. An operator may grasp the handle assembly to control upward or downward movement of the IV bag support to a desired height and fix the desired height by release of the foot pedal assembly.

The invention relates to portable marine vehicle. It includes hull unit, interlock unit, and power unit. The hull unit has many distant hulls each of which has hollow bow and stern. The interlock unit has at least one foot stool and fished beam set. The power unit is respectively set in the stern to drive the hull and control the direction. The invention uses many hulls design to supply prefer incline righting capacity, more activity space through the interlock and hull units.

A handled laser treatment device provides a plurality of branched light pipes or light distribution tips distributed so as to evenly deliver laser radiation to the surface of the scalp. To make efficient use of each laser diode, each laser can coupled to a branched light pipe with the branches arranged to distribute light directly to the surface of the scalp. Each laser source is connected to a three branch light pipe. Alternatively, each laser diode can be directly coupled to a light distribution tip arranged in a triad. Each light pipe or light distribution tip acts as a tine or tooth in a comb to bring laser radiation to the scalp free of obstruction by hair, etc., with a tripod configuration that allows each light pipe assembly to evenly contact the rounded surface of the scalp. The branched light pipes or the light distribution tips are preferentially coupled to a flexible membrane so as to be capable of independent orientation allowing improved contact of the distal ends of the tripods or triads to the scalp.

The present invention discloses an inclined optical fiber raster based relative hygrometer for measuring relative humidity of air, which comprises a light source, single mode optical fibers, and an inclined optical fiber raster and an optical spectrum analyzer, wherein, the light source is connected through a single mode optical fiber to the inclined optical fiber raster, the output end of the inclined optical fiber raster is connected through a single mode optical fiber to the optical spectrum analyzer, and the inclined optical fiber raster is coated with a film made of a moisture sensitive material. The humidity sensitive material is polyimide material, or carbon-fiber composite material, or epoxy-phenolic resin moisture-sensitive material. The present invention incorporates the advantages of high moisture expansion linearity and stable chemical property of polyimide PI film, flexible design, high long term stability and exchangeability, and high response rate. In addition, the high temperature resistant, corrosion resistant, and optical fiber raster type sensor incorporates high measuring accuracy, miniature, interference resistance, and reusability, and is suitable for use in environmental extremes. Therefore, the present invention has advantages including low cost, simple construction, and easy implementation.

The present invention is intended to provide a DC-DC converter, in which the relationship between the duty ratio of a drive signal and the output DC voltage is nonlinear, being characterized in that the relationship between an error signal and the output DC voltage is linear, and that the design of stabilizing the feedback system is facilitated. The DC-DC converter comprises an error-amplifier circuit for generating the error signal that is obtained by amplifying the error between the output and a target value, an oscillating circuit for generating a triangular wave signal having an amplitude corresponding to the error signal, and a comparison circuit for comparing the triangular wave signal with a reference signal having a predetermined value and for generating the drive signal to turn ON / OFF a switching device.

The invention discloses equipment for enabling a copper pipe to pass through a fin of a condenser. The equipment comprises a support, as well as a push plate driving system, a copper pipe collector, a fin collecting disc and a traction device which are sequentially positioned on the support, wherein the copper pipe is placed on a supporting base of the copper pipe collector, and clearance layers formed between clapboards or partition posts are stacked; a push plate passes through the upper part of the supporting base which can reciprocate up and down so as to push the copper pipe into the fin hole of the fin collecting disc; meanwhile a draw rod enters into the fin hole from the other side of the fin collecting disc under the effect of a guide mechanism, so as to draw the copper pipe, and a drawing head is inserted into the opening end of the copper pipe; when the draw rod is retreated from the fin hole, the copper pipe is synchronously guided into the fin hole, after that, the push plate and the draw rod are reset, the upper-layer copper pipe orderly falls to the supporting base so as to be subjected to the next round of pipe passing. The equipment is simple in operation and high in stability and safety, and can be used for improving the pipe passing efficiency and the alignment accuracy, reducing the equipment stagnation period in a pipe passing process and reducing the human cost and the equipment loss.

A beaker (1) is described which is made from a paper material, has a fillable interior and is formed by a conical cover (2) and a base (3). At the lower end of the interior, the base is fastened to the cover in a substantially fluidtight manner by way of a chime (4). The cover and / or the base in the region of the chime and / or the chime itself have / has an outwardly protruding widened portion (10) at least in one region along the circumference. A lower edge (14) of the widened portion forms a standing face for the beaker. The widened portion can form a means for holding another beaker of the same type, which means can interact with a beaker of the same type when the beaker is stacked. The beaker can have a heat-insulating outer cover.

The invention discloses an automatic energy-extraction circuit of a current transformer. According to the energy-extraction circuit, one energy-extraction winding at the output end of the current transformer is connected with the energy-extraction circuit which is used for providing DC voltage to a load, and the other winding at the output end of the current transformer is connected with a magnetic linkage bypass circuit to realize the intermittent magnetic linkage output of a bypass transformer; and the magnetic linkage bypass circuit is connected with and driven by the energy-extraction circuit at the same time. According to the invention, all parts adopt simulation components, the cost is low, the reliability is high and the anti-interference capability is strong. The conservation of the transformer magnetic linage and a principle similar to the pulse width working principle of a switch power are utilized to realize reliable energy extraction of primary-side current width range variation; and the automatic energy-extraction circuit has the advantages of small overall loss, simple structure and high reliability, and overcomes the inherent defects of the current transformer in energy extraction.

The invention relates to a near-infrared self-registration venous imaging device and method. The method comprises the following steps: acquiring the image of skin illuminated by visible light or near-infrared light through a camera; controlling to enter a light mode of a lens of the camera by a near-infrared filter plate-visible light filter plate switching device, switching a visible light filterplate or a near-infrared filter plate according to tough signals; emitting near-infrared light to the skin from a near-infrared light source; acquiring video images captured by the camera by a micro-controller, and outputting triggering signals of the near-infrared filter plate-visible light filter plate switching device; carrying out enhancement, filtering and segmentation processing on the video images by a parallel processor, and transmitting the video images to the projector; and emitting out visible light by the projector, and projecting to the surface of the skin. The two filter platescan be switched by IR-CUT, a vein image or projection image of a shot part of a human body can be acquired independently, feature point matching is carried out by the microcontroller, and the vein image is subjected to rotating and translating operation, so that the projection image is registered with the vein image. The near-infrared self-registration venous imaging device and method are harmlessto people and are safe and environmentally friendly.

An interferometer spectrometer that has reduced alignment sensitivity is described herein. Parallelism of an output ray pair formed by a single input ray is not affected by variations in relative alignment of the components. In comparison to other compensated interferometer designs, lateral separation errors in the output ray pair due to optical component misalignment are reduced. The reduced alignment sensitivity may be accomplished by utilizing simple planar components that are common to both light paths. The reduced alignment sensitivity and simplicity in design provides a more compact and more robust interferometer, with reduced manufacturing costs associated therewith. An elliptical field of view light source that utilizes an array of collimator lenses is also described. The light source provides a more compact design than a single circular collimator lens of the same area, and is suitable for single channel or multi-channel use.

The invention discloses a radio frequency front-end frequency selection circuit and a signal receiving method thereof. The circuit comprises: an antenna used for coupling and receiving a radio frequency signal; a first multipath switch used for selecting the radio frequency signal to a microstrip filter of a corresponding frequency band; the microstrip filter used for filtering an out-of-band interference signal; a low noise amplifier used for amplifying the useful radio frequency signal; and a filter group used for filtering the amplified signal; a second multipath switch used for switching the radio frequency signal obtained by the filter group to a subsequent link of a receiver to be processed. The method comprises the steps that: the radio frequency signal is coupled to a radio frequency link by the antenna, the first multipath switch switches the radio frequency signal to the microstrip filter of the corresponding frequency band, the microstrip filter filters the out-of-band interference signal and amplifies and filters the useful signal for the second time, and finally the signal is switched to the subsequent link of the receiver to be processed. The radio frequency front-end frequency selection circuit disclosed by the invention has the advantages of miniaturization, integration and strong expansibility.

The invention relates to an infrared thermal imaging remote monitoring device for a transmission tower. The monitoring device mainly comprises a main chassis, a circuit board, a screening box, a solar panel, a storage battery, a wind speed and wind direction sensor, a video camera, an infrared thermal imager, a 3G wireless communication transmitting antenna, a 3G wireless communication receiving antenna and a temperature and humidity sensor, wherein the wind speed, the wind direction, the environment, the temperature and the humidity and the thermal image situation of a connecting piece on the tower and dynamic images on the tower are synchronously transmitted to a ground industrial control computer; monitoring data is displayed and printed; the operating situation of the transmission tower is judged; and information-based, image-based and digital transmission monitoring on the transmission tower is realized. The device has the characteristics of advanced design, safety, stability, rapidness, accuracy, synchronization and reliability, and is a very ideal remote monitoring device for a high-voltage transmission tower. The device can also be used for monitoring wireless communication and television broadcasting towers.

The invention discloses an electromagnetic direct-drive high-speed three-wire magnetic-field compound flux copper-gasket submerged arc welding device and a method thereof. The device comprises a wire feed system, a welding power source, a magnetic field power source, a copper gasket system, a torch system, an electromagnetic compound system and a numerical control system, wherein the wire feed system is formed by integrating the rotor of the electromagnetic direct-drive rotating servomotor and the main wire feed rolls into an integral body; the torch system comprises an eccentric current contact nozzle which is divided into an upper part and a lower part; the electromagnetic compound system is integrated with the nozzle of the torch system and a water cooling system into an integral body; and the copper gasket system is an air-pressure copper-gasket one-side-welding double-side one-step molding system, the back side of which uses flux. The invention can cancel the mechanical transmission link between the traditional motor and the wire feed rolls, greatly enhances the wire feed stability and the control response precision, and eliminates the noise, oil sludge and vibration, thereby realizing the three-wire high-speed electromagnetic compound submerged arc welding one-side-welding double-side molding high-efficiency welding method. The method has the advantages of simple structure, small size, high stability and reliability, and precise numerical control, and can be used for welding huge and thick plates.

The present arrangement provides a twisted pair of conductors, each with a profiled insulation thereon, where in the twisted pair, the peak to peak contact of adjacent conductor insulation is ensured along the length of the pair. To this end, each of the profiled insulations on the conductors of the pair are forward twisted prior to twinning to ensure the maximum number of peak to peak contacts per unit length of the pair.

In an extension device comprising a patient support surface and an extension beam (16) that can be connected on its one end via an interface (14) to the patient support surface and that has a holder for a feed rod arrangement on its other end, whereby the patient support surface has at least two longitudinal beams (10) parallel to each other that carry a pelvic support plate, the interface (14) comprises a coupling part (36) on the support surface side and comprises a coupling part (38) on the beam side and rigidly connected to the extension beam (16), whereby the coupling part (36) on the support surface side on one of the longitudinal beams (10) is supported in such a manner that it can pivot about an axis perpendicular to the pelvic support plate, and whereby the coupling part (36) on the support surface side can be locked by a locking device against a rotation about its pivot axis relative to the longitudinal beam (10), which locking device can be actuated by a remote actuation.

A Chinese medicine for treating prostatic tumor is prepared from rapes pollen through extracting in organic solven and purifying by silica gel column.

The invention discloses a device and a method for detecting communication quality of an indoor unit and an outdoor unit of an air-conditioning unit. The device comprises a signal receiving module, a unit number setting module, a data storing module, a signal processing module and a display module, wherein the signal receiving module is connected to the signal processing module and is used for receiving communication signals of the indoor unit and the outdoor unit, converting communication signals and inputting communication signals to the signal processing module, the unit number setting module is connected to the signal processing module and is used for setting the number of indoor units, the data storing module is connected to the signal processing module and is used for storing data which are from the signal processing module, the signal processing module is used for analyzing the number of indoor units which are in normal communication each time and calculating the error rate, and the display module is connected to the signal processing module and is used for displaying the number of indoor units which are in normal communication and the error rate in real time. By the aid of the device, the communication condition of indoor units can be reflected in real time, the cause that the communication of units is unstable is determined, the communication quality can be reflected in real time, and the problem can be found out and solved timly.

The invention discloses a wind power dedusting system for a rolling process of a cigarettes factory. The wind power dedusting system comprises a deduster connecting pipe, a plurality of branch wind pipes and a plurality of pieces of rolling and packing equipment, wherein each piece of rolling and packing equipment is connected with a branch wind pipe; the wind power dedusting system also comprises a wind compensating pipe with a wind compensating silencer and a main wind pipe; the deduster connecting pipe and the wind compensating pipe are respectively communicated with the main wind pipe; the main wind pipe is respectively communicated with each branch wind pipe through a pipe collector; and the wind compensating pipe is provided with a control valve which is used for automatically switching on to compensate wind when a certain branch wind pipe is stopped. The wind power dedusting system can concentrate wind power for supply, and ensure stable wind quantity, wind pressure and wind speed; the pipeline design is more standardized and unified; and the effective operability and the yield of the rolling and packing equipment are improved, the production cost is reduced and the service environment of workers is improved.