38results about How to "Avoid serious distractions" patented technology

Medical devices having one or more rotatable linkable components or segments, delivered in a first orientation relative to a component guide into a tissue cavity, such as the interbody vertebral space. After delivery, each segment may be rotated to a second, different orientation relative to the component guide, such as into a permanent vertical standing position. The segments achieve maximum distraction of the cavity space such as adjacent vertebra end plates, while using a minimal invasive surgical (MIS) approach. When the segments are tightened in place, the device provides long-term stability. The device can be used as a distraction instrument and/or permanent implant that can be used for interbody fusion, nuclear replacement, or anywhere in the body where a stable distraction of tissue and/or the implantation of material such as a device with an MIS approach is desired.

An expandable intervertebral fusion implant includes a pair of shells having mating surfaces which resist shifting when the parts are assembled. The shells have opposed legs provided with teeth which permit the shells to be ratcheted outward in a non-parallel fashion after they have been placed between spinal elements.

An expandable device is positioned surgically between spinous processes, permitting the incremental distraction of posterior spinal elements when the device is filled with a hardenable material.

The invention relates to a non-magnetic low vibration coaxial pulse tube refrigerating machine wherein the pulse tube and the cold accumulation device are in coaxial arrangement, between which cold accumulation stuffing is filled, an arched flow diverter is arranged on an extending section and the end portion, closely spaced vertical through-holes are arranged on the arched portion, vertical grooves are arranged evenly circular ring external wall, the cover type cold end heat exchanger covers the groove and packs by bonding, the horizontal split cold platform supported by the support rod and fixed on the hot end flange vertically are arranged on the cold end heat exchanger, the cold platform and cold end heat exchanger are connected by flexible heat guide band, the coupling channel under the throttle holes are connected to phase modulation capillary.

The invention discloses a device applied to a rectangular micro-strip millimeter-wave radar sensor, and belongs to the technical field of millimeter-wave radar sensors. The device comprises that Xn first series feed micro-strip antennae are correspondingly arranged in M lines of millimeter-wave series feed transmitting antenna arrays, and each first series feed micro-strip antenna is connected with the transmitting end of a millimeter-wave radar chip; Yn second series feed micro-strip antennae are correspondingly arranged in W lines of millimeter-wave receiving series feed antenna arrays; andeach second series feed micro-strip antenna is connected with the receiving end of the millimeter-wave radar chip. The W lines of millimeter-wave receiving series feed antenna arrays and the M lines of millimeter-wave series feed transmitting antenna arrays are arranged on the same layer of a printed circuit board, are cooperated or are independently taken as the transmitting antenna arrays and also as the receiving antenna arrays. By use of the device, the technical effects that the transmission of disturbed millimeter-wave signals is avoided and the millimeter-wave radar sensor can be manufactured on the same layer of printed circuit board can be achieved.

The invention discloses a support method for an aircraft model in a wind tunnel experiment. The method includes the following steps: 1) a wind tunnel and an aircraft model in the wind tunnel are connected and fixed through a spatial rod system, and the wind tunnel is not in direct contact with the aircraft model; and 2) according to requirements of experimental measurement and support system design, the diameter, length, number, material and spatial distribution form of support rods in the spatial rod system are adjusted, thereby realizing optimization of rigidity of an aircraft model supportsystem. By adoption of the support method provided by the invention, the support system further adapts to and meets the requirements of wind tunnel experiment content and measurement, thereby achieving the purpose of improving precision and reliability of pneumatic experiment data, and effectively solving the problems of insufficient rigidity, large flow field interference and complicated system internal force of a support system in a traditional support method, and the support method provided by the invention has obvious advantages and potential of innovative development in the aspect of a wind tunnel experiment, particularly in the aspect of a full-size large-model pneumatic experiment.

A method and system for incorporating voice commands into the interactive process of image segmentation. Interactive image segmentation involves a user pointing at an image; voice commands quicken this interaction by indicating the purpose and function of the pointing. Voice commands control the governing parameters of the segmentation algorithm. Voice commands guide the system to learn from the user's actions, and from the user's manual edits of the results from automatic segmentation.

The invention provides a rapid detecting device of heavy metal arsenic. The rapid detecting device comprises a first pre-treatment module, a second pre-treatment module, a color developing module and a comparative analysis module, wherein pentavalent arsenic is reduced into trivalent arsenic in the first pre-treatment module under an acidic condition by using a reducing agent; the trivalent arsenic is reduced into arsenide hydrogen gas by using a reducing agent in the second pre-treatment module; the arsenide hydrogen gas is enabled to be in contact with test paper dipped by mercury bromide in the color developing module so as to display brown color spots; the comparative analysis module is used for comparing by utilizing a photometer so as to complete detection. The rapid detecting device provided by the invention is high in sensitivity, small in error and strong in anti-jamming capability.

The application relates to an antenna unit, an antenna array and an antenna. The antenna unit includes a metal ground layer, a dielectric substrate and an antenna cell unit; the metal ground layer andthe antenna cell unit are respectively disposed on two opposite surfaces of the dielectric substrate; the antenna cell unit has a parallelogram shape, and the antenna cell unit is disposed in a 45-degree polarization manner; the long side and the short side of the antenna cell unit are two adjacent sides; and at least one short side of the antenna cell unit is provided with a radiating element. The antenna can reduce interference and can improve the detection performance of the radar when the vehicle is in use.

The invention discloses an SDN segmented routing defense method for link flooding attacks. The SDN segmented routing defense method comprises the following steps: for a given network topology, constructing the given network topology into a directed graph-based network model, and obtaining an entity flow set, capacity and flow load of a link; monitoring the network model constructed in the step (1)by using an SDN-based system defense model; judging whether the network model is attacked by the LFA and the link is seriously congested or not, and if so, performing segmented routing on the networktopology by utilizing the SDN controller and the entity flow set, the capacity and the flow load of the link; otherwise, continuously monitoring and the like. According to the SDN segmented routing defense method provided by the invention, when the link flooding attack defense is carried out, the congestion load of the attacked link is defibered by utilizing the segmented routing strategy of theSDN, so that a large amount of resource consumption possibly caused by global routing can be avoided, and the link congestion is relieved, and the effective defense of the link flooding attack is achieved.

The invention discloses a lampblack monitoring self-adaptive front-end gas inlet system which comprises a gas chamber, a first temperature and humidity sensor, a second temperature and humidity sensor, a driving circuit, a single chip microcomputer, a gas pump, a gas drying device, a gas heating and cooling device, a metal filter screen and an alarm. The air chamber is of a central symmetry structure; the air pump comprises an air inlet pump arranged between the air inlet and the first temperature and humidity sensor and an air outlet pump arranged between the second temperature and humidity sensor and the air outlet; the metal filter screen is fixed on the inner wall of the gas chamber, the gas drying device is arranged in the gas chamber, and the gas heating and cooling device, the single-chip microcomputer, the alarm and the driving circuit are arranged on the periphery of the gas chamber. According to the invention, self-adaptive dehumidification, heating or cooling of oil smoke is realized through a PID control algorithm, and severe interference of temperature and humidity on a subsequent test result of the oil smoke detection probe is avoided. Error of the system can be known through alarm of the alarm, and loss of a restaurant caused by abnormal test results is reduced.

The invention provides a data packet scheduling method and device. The method comprises the steps: determining whether a service cell and an adjacent cell carry out the high-priority guarantee serviceor not in any scheduling period when a to-be-scheduled data packet is a big data packet insensitive to time delay; if it is determined that the serving cell carries out the high-priority guarantee service and the neighbor cell carries out the high-priority guarantee service, determining whether the neighbor cell is in a medium-high load state or not; when it is determined that the neighbor cell is in a medium-high load state, buffering the to-be-scheduled data packet, and determining whether to schedule or not in the next scheduling period; and when it is determined that the neighbor cell isnot in the medium-high load state, scheduling the to-be-scheduled data packet in the current scheduling period. According to the method, interference to the neighbor cell can be avoided during large data packet scheduling insensitive to time delay.

The invention discloses a preparation method of a reusable solid-phase extraction material based on beta-cyclodextrin, which comprises the following steps: reacting beta-cyclodextrin, benzene-containing halide, carbonate and initiator in an organic solvent under nitrogen conditions, pickling, washing with water, washing with a solvent, and drying to obtain the beta-cyclodextrin polymer used as thesolid-phase extraction material. The method is simple in process and low in cost; the obtained solid-phase extraction material can be used for selective separation and enrichment of target objects inenvironmental samples, consumer goods and industrial products, serious interference of matrixes can be avoided, the problem of inaccurate measurement caused by too low content of the target objects and incapability of reaching sensitivity of instruments in current detection work is solved, and the material can also be repeatedly used.

The invention discloses a data sending method and a data sending device, which are used for solving the problem of low data sending accuracy in the prior art. The method comprises the following steps that: if a power frequency current is determined to be in an increased state, a sending end selects a sub-time period, from a time period in which the power frequency current is increased from a first current threshold value to a second current threshold value, and sends the data; or if the power frequency current is not determined to be in the increased state, the sending end selects the sub-time period, from the time period in which the power frequency current is decreased from the second current threshold value to the first current threshold value, and sends the data, wherein absolute values of the first current threshold value and the second current threshold value are smaller than a peak value of the power frequency current, and the absolute value of a difference value between the absolute values of the first current threshold value and the second current threshold value and the peak value of the power frequency current is greater than a determined threshold value. In the embodiment of the invention, because the absolute values of the first current threshold value and the second current threshold value are smaller than the peak value of the power frequency current, interference generated by other electric appliances when the power frequency current is at a peak or a valley can be avoided by sending the data in the selected sub-time period, so that the data sending accuracy is improved.