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2212 results about "Carrying capacity" patented technology

The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment. In population biology, carrying capacity is defined as the environment's maximal load, which is different from the concept of population equilibrium. Its effect on population dynamics may be approximated in a logistic model, although this simplification ignores the possibility of overshoot which real systems may exhibit.

Medical appliance carrying apparatus

The invention discloses a medical appliance carrying apparatus which comprises a working table. A vertical slide rail is arranged on one side of the upper surface of the working table; an electric trolley is arranged on the vertical slide rail and provided with a mount on the upper surface; a circular groove is formed in the center of the upper surface of the mount; a rotating motor with an upward rotating end is arranged in the circular groove; the rotating end of the rotating motor is provided with a circular supporting plate matched with the circular groove; a first installation box is arranged on the upper surface of the circular supporting plate; a controller is arranged on the front surface of the working table; a mains supply interface is arranged on the back surface of the working table; a power terminal of the controller is connected with a mains supply interface via a conductor wire; an output end of the controller is connected with the electric trolley, the rotating motor, a hydraulic cylinder, an electric pusher and a micro linear motor via conductor wires respectively. The medical appliance carrying apparatus has the advantages of high carrying capacity, high carrying speed, capability of liberating manpower and improving work efficiency, small size, and high movability.
Owner:平邑经济开发区投资发展有限公司

Anti-oil and fire-retardant chlorinated polyethylene sheath material with good weather resistance and preparation method thereof

The invention relates to an anti-oil and fire-retardant chlorinated polyethylene sheath material with good weather resistance and a preparation method thereof. The sheath material uses chlorinated polyethylene rubber as main raw material and adds chlorosulfonated polyethylene rubber, triallyl isocyanurate, 1,3-bis (tert-butyl peroxide isopropyl) benzene, trioctyl trimellitate, carbon black, antioxidant 1010, ultra-fine talc powder, antimony trioxide, and high-activity magnesium oxide R-150 according to ratios; the preparation method is as follows: at first, mixing part of the auxiliary agents, then mediating, internal mixing, open mixing, granulating and extruding are carried out on the mixture to form cables, thus the cables are obtained. In the formula, high temperature resistant plasticizer is utilized, various auxiliary agents with appropriate proportions are added into the formula, so that chlorinated polyethylene rubber cable material can reach a high temperature of 105 DEG C, and can be used at the lowest temperature of minus 50 DEG C. The sheath material has the advantages of good anti-aging property, excellent electrical insulation and mechanical property, environmental protection and high flame resistance, thereby being suitable for cold and oil-contaminated severe environment and transmission and distribution circuits of which the current-carrying capacities are large and the rated voltages are at or below 450/750V. Meanwhile, compared with traditional chloroprene rubber cable material, the sheath material has the characteristics of low cost, fast extruding speed and high output benefit.
Owner:NINGBO WELL ELECTRIC APPLANCE CO LTD

Identification method of cable current-carrying capacity and identification device

The invention relates to an identification method of cable current-carrying capacity and an identification device; after relative performance parameters of the cable are measured, the temperature endvalue of the conductor is calculated by setting current initial value of the conductor and the temperature initial value of the conductor, and the temperature initial value of a conductor is correctedaccording to the difference of the temperature end value and the temperature initial value of the conductor, until the difference of the two-time conductor temperature is less than a first presettingdeviation range, at the moment, the temperature end value of the conductor is the conductor temperature under the action of the current initial value of the present conductor; the current initial value of the conductor is continuously corrected according to the difference of the temperature end value of the conductor and 90 (the highest insulating working temperature of XLPE), until the absolutedifference of the temperature end value of the conductor and 90 is less than a second deviation range, the current initial value of the conductor, corresponding to the end value of the conductor temperature, is determined into the final cable current-carrying capacity. By initializing the value of the conductor current and temperature and adopting an iteration process which is continuously carriedout, the problem that the obtained result in the existing method is inaccurate, so as to determine the cable current-carrying capacity accurately.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD +1

Bag, bag pack, and bag dispensing system

ActiveUS20050087542A1Resists tearingCarry substantial amount of weightBagsSacksThermoplasticCarrying capacity
A tabless, self-opening T-shirt-styled thermoplastic bag is provided having a handle, stress relief notch, and mounting tab structure for providing a wide-opening bag mouth and a bag having high weight carrying capacity. Handles have a narrow upper portion, a wide middle portion and a narrow lower portion. Handle mounting apertures are provided in the wide middle portion, which projects inwardly above the mouth of the bag. The handle mounting apertures are formed by a blade having an elongate section that is bent to form an obtuse angle. The handle mounting aperture has a sufficient width for accommodating arms of a dispensing rack and a height about three times as great as the width. The bag has a central mounting tab extending above the mouth of the bag and between the handles. A stress relief notch having a reasonably tight radius of curvature is provided between each handle and the mounting tab. The mounting tab has a mounting aperture formed by two blades meeting at a sharp corner, the corner having essentially no radius of curvature. A severable region is provided between the corner and an outer edge of the mounting tab, which can tear as the bag is removed from a mounting hook on a dispensing rack. Multiple bags are aligned and bonded together to provide a unitary pack, where pulling one bag off a dispensing rack pulls an adjacent bag open.
Owner:SUPERBAG

System for monitoring current-carrying capacity of cable conductor and method

The invention provides a method for monitoring the current-carrying capacity of a cable conductor, which comprises the following steps of: firstly, monitoring the temperature of an outer sheath layer of the cable conductor and current of a cable core of the cable conductor; deducting the cable conductor into a conductor layer, a conductor shielding layer, an insulating layer, an insulated shielding layer, a cushion layer, an air gap layer, an aluminum sheath shielding layer and an outer sheath layer in advance according to the heat transfer characteristic of the cable conductor; acquiring the heat resistance of each layer for the cable conductor and the loss generated by each layer for the cable conductor according to the heat conducting performance of each layer of material of the cable; acquiring the temperature of the cable conductor by using a node method according to the heat resistance, the loss, the outer sheath layer temperature of the cable conductor and the current of the cable cote of the cable conductor, wherein the temperature of the cable conductor comprises the steady temperature and the transient temperature of the cable conductor; and monitoring the current-carrying capacity of the cable conductor according to the temperature of the conductor cable. The invention further provides a device for monitoring the current-carrying capacity of the cable conductor. According to the method and the device, disclosed by the invention, the temperature of the cable conductor can be monitored in a real time.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD +1

Underwater LED (Light-Emitting Diode) long distance communication system based on visible light

ActiveCN105680941AOvercoming the defects of low speed and low bandwidthHigh bandwidthClose-range type systemsLow speedData acquisition
The invention discloses an underwater LED (Light-Emitting Diode) long distance communication system based on a visible light. The system comprises a transmitting device and a receiving device which are arranged underwater and respectively used for performing waterproof packaging; the transmitting device specifically comprises a data acquisition module, a transmitting end digital signal processing module, a digital to analog conversion module, a transmitting end amplifier equalization module, a direct current bias module and a light source; the receiving device specifically comprises an optical receiving module, a receiving end amplifier equalization module, a filter module, an analog to digital conversion module, a receiving end digital signal processing module and a data recovery module. The underwater LED long distance communication system based on the visible light provided by the invention can overcome the attenuation influence of an underwater environment on an electromagnetic wave and the disadvantage of low speed and low bandwidth of a sound wave, improve the transmission rate, increase the data carrying capacity, enhance the security, reduce the interference effect, reduce the equipment cost and power consumption, and realize high speed, high bandwidth, high security, and anti-interference underwater wireless optical communication.
Owner:UNIV OF SCI & TECH OF CHINA

Preparation method for lubricating oil of graphene loaded nanometer oxides

The invention relates to a preparation method for lubricating oil of graphene loaded nanometer oxides, and belongs to the technical field of lubricating oil. The preparation method adopts the technical scheme that a graphene oxide solution is subjected to low-speed separation, and supernatant liquid is taken for use; the supernatant liquid and nanometer oxides are mixed and are subjected to freeze drying to obtain fluffy few-layer graphene oxide and nanometer oxide composite powder; the composite powder is heated in a vacuum state until the constant drying condition is reached, the composite powder in the constant drying condition and base oil are blended to be put in a sealed reaction kettle for heating treatment, and after the filtering or centrifugal separation, the repeated washing is carried out for 3 to 5 times to obtain an oleophylic graphene nanometer oxide compound; the oleophylic graphene nanometer oxide compound is uniformly mixed with composite additives and the base oil to obtain the lubricating oil of the graphene loaded nanometer oxides. The preparation method has the advantages that the process is simple; the performance price ratio is high; all ingredients have excellent dispersibility and stability. The prepared lubricating oil has good lubricating performance and high carrying capacity, and the beneficial influence can be generated on the lubricating oil in the aspects of viscosity-temperature characteristics, heat conduction effect and the like.
Owner:TANGSHAN XIRUN SCI TECH DEV CO LTD
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