51results about How to "Improve low utilization" patented technology

The invention discloses a method of transmitting a signal of a time division duplex system and a frame structure used thereof, pertaining to the mobile communication field. The transmitting method includes that within the time length of a half-frame of wireless frames, the base station transmits signal on a downlink special time slot, thereafter does not transmit signal on a protective gap (GP), and then receives signal on an uplink special time slot; all time lengths of other uplink and downlink normal time slots for transmitting signal are equal, the total time length of the downlink special time slot, the protective gap and the uplink special time slot is integer times of the time length of an uplink or downlink normal time slot. The invention also discloses a frame structure of the time division duplex system. The invention allows allocating flexibly the duration of the protective gap, and ensures no big interference on the uplink receipt of other base stations even if synchronoussignals are uprated in power; besides, the invention enhances the usage rate of the system.

The invention provides an anti-oxidative peptide and a preparation method thereof. The preparation method comprises the steps of performing zymolysis, separation and purification on acid protease by using sea cucumber meat or sea cucumber visceral protein as the raw material to obtain the specific anti-oxidative peptide. The complete sequence of amino acid is gavlgty. The anti-oxidative peptide disclosed by the invention makes up the defects of natural antioxidants, reduces anxiety of the public about artificially synthesized antioxidants, and lays the foundation for developing the anti-oxidative peptide based on a food source and widely applying the anti-oxidative peptide based on the food source to foods and medicine.

The invention provides an antioxidative peptide and a preparation method thereof. The method is used for obtaining the specific antioxidative peptide from chlorella protein as the raw material by virtue of enzymolysis of an acid proteinase, separation and purification; the amino acid complete sequence of the specific antioxidative peptide is aetiglap. The shortcomings of a natural antioxidant are overcome and the worry of the public on an artificially synthetic antioxidant is eliminated, and a foundation is laid for developing the antioxidative peptide based on food sources and exploring the wide application of the antioxidative peptide in foods and medicines.

The invention relates to a long-service-life high-specific-energy maintenance-free starting lead-acid storage battery and a production method thereof. According to the battery, lead plasters coated atthe upper portion and the lower portion of a grid of at least one of a positive electrode plate and a negative electrode plate are different, and the conductivity or the utilization rate of the leadplaster at the lower portion of the grid is superior to that of the lead plaster at the upper portion of the grid. According to the invention, the upper portion and the lower portion of an electrode plate adopt different formulas and are respectively coated and filled, wherein the acid content of the lead plaster at the lower portion is different so as to reduce that the apparent density of the lead plaster or the conductive substance content of the lead plaster at the lower portion is different so as to improve the utilization rate, so that the problem of low utilization rate of the active substance at the lower portion is effectively improved, and the capacity of the battery is improved; the internal resistance of the lower portion is reduced, and the utilization rate is improved, so that the problem of high proportion of upper discharge capacity is slowed down, wherein the upper discharge capacity of the electrode plate is reduced and the discharge rate is reduced under the condition of the same discharge capacity, so that the softening and falling of the active substance are reduced, and the service life of the battery is prolonged; and under the condition of the same paste coating amount, the capacity, the low-temperature discharge performance and the cycle durability of the prepared battery are improved.

The invention provides anti-oxidative seaweed polypeptide and a preparation method thereof. According to the method, by enzymolysis of acid proteinase, seaweed protein is taken as a raw material to be separated and purified to obtain specific anti-oxidative polypeptide of which the complete sequence of amino acids is avvkeagdacf. The anti-oxidative seaweed polypeptide disclosed by the invention has the advantages of eliminating defects of natural antioxidants, also eliminating worries of publics on artificial synthesis of antioxidants, and laying the foundation for developing the anti-oxidative polypeptide based on a food source and exploring wide application of the anti-oxidative seaweed polypeptide in foods and medical science.

Embodiments of the present invention disclose power network control methods and system, and devices, relating to the field of electricity and aiming to solve a problem in the prior art that the use ratio of capacity equipment is low due to balance of supply and demand of a grid-tied micro-grid or the grid-tied micro-grid has a high demand for the power grid. A power network comprises N micro-grids. Each micro-grid is connected with at least one of the other micro-grids of the N micro-grids by using a contact line. The contact line is provided with a contact line switch. The N micro-grids are divided into M micro-grid groups. Micro-grids of each group are communicated with each other by using contact lines. Each micro-grid group is communicated with a power grid power supply line by using a point of common coupling (PCC). For each micro-grid group, a network scheduling device acquires a permitted power operating range of each micro-grid of the micro-grid group, and the permitted power operating range of each micro-grid is sent to a micro-grid control device of the micro-grids, so that the micro-grid control device controls a real-time power of a micro-grid tied point to be within the permitted power operating range.

The invention relates to anti-oxidization bone collagen polypeptide and a preparation method thereof, aiming at solving the technical problems of an existing product that the source is single and theimmunogenicity exists. An amino acid sequence is shown as a sequence table 1. The invention also provides a preparation method of the anti-oxidization bone collagen polypeptide; collagen is extractedby taking tuna bones as a source; then the collagen is subjected to enzymolysis by adopting a tyrisin-chymase complex enzyme and then is separated and purified, and frozen and dried to obtain the anti-oxidization bone collagen polypeptide. The anti-oxidization bone collagen polypeptide can be used for the field of preparation of the anti-oxidization polypeptide.

An embodiment of the invention discloses a power network, and a control method, devices and a control system of the power network, which relate to the field of power, and used for solving the problem of low utilization efficiency of energy production equipment caused by the purpose of satisfying balance between supply and demand of a grid-connected microgrid or the problem of great demand of the grid-connected microgrid for power grids in the prior art. The control method adopts N microgrids, wherein each microgrid comprises a first bus and a second bus which are connected through voltage transformation equipment, and the first bus is used for connecting energy production equipment and a load; the second bus in each microgrid is connected with the second bus of at least one other microgrid of the N microgrids through a connecting line, the connecting line is provided with a connecting line switch, and the connecting line switch is used for controlling the connected microgrids to connect or disconnect; and the N microgrids are divided into M microgrid groups, the microgrids in each group are connected through the connecting lines, each microgrid group is connected with a power grid power supply line through a public connection point PCC, and the first bus of at least one microgrid in the N microgrids is connected with a charging pile.

The invention particularly relates to a garden type ecological floating island for in-situ upgrading and reconstruction. The garden type ecological floating island comprises a gas collecting and releasing device, a floating island frame, a filler area, filler, a plant planting area, emergent aquatic plants, a self-control rotation control system and a motor. The ecological floating island is provided with the gas collecting and releasing device, so that the loss of dissolved oxygen is reduced; the ecological floating island is provided with the filler area, so that the sludge concentration of the system is increased, the utilization rate of dissolved oxygen is increased, and the removal rate of organic matters and nitrogen is increased; the automatic rotation control system of the ecological floating island can relieve the blockage problem; and the upper part of the floating island is the emergent aquatic plant planting area for absorbing organic matters and nitrogen in sewage, and meanwhile, the effects of beautifying and deodorizing the oxidation ditch are achieved.