112results about How to "Small increase" patented technology

Via real time online bandwidth measurement, this method confirms the threshold value ssthresh. When the congestion window (CW) is less than a half of the threshold, the rule of exponent gain is followed. Otherwise CW gains each time a value of a half of difference of the threshold and CW (ssthresh-cwnd) to approach gradually the threshold. Until the difference is less than the regulation factor phi (ssthresh / 2>= phi >=2). Then CW is set as the threshold value to enter the stage of avoiding congestion. This invention can reduce the happening of loss of several texts in a window at the slowly start stage, reduce the package loss rate and raise the net transferring ability.

Technology is provided, which allows to easily find tampering of event logs created by an information processing device and transmitted to a log management apparatus, without increasing communication load. A printer (i.e. information processing device) creates a hash value from the event log of an event every time the event occurs. The printer generates a digital signature by encrypting the hash value with its own private key. The printer transmits the signature-bound event log obtained by binding the digital signature with the event log to a server (i.e. log management apparatus). The server decrypts the hash value from the event log of the received signature-bound log information using a device public key. The server also generates a new hash value from the event log. The server verifies the coincidence of the decrypted hash value and the new hash value, and authenticates signature-bound event logs for which this coincidence has been verified. The server stores signature-bound event logs that have been authenticated. Every time an event occurs, the printer transmits an event log bound with a digital signature that is created using its private key. Only signature-bound event logs are communicated between the printer and the server. Event log tampering can easily be discovered from the signature-bound event logs. Thus, tampering of event logs can easily be discovered without increasing the communication load between the printer and server.

The invention relates to an electromechanical wheel brake device, with an electric motor that can press a frictional brake lining against a brake body (brake disk) by a reduction gear (planetary gear) and a rotation / translation conversion gear (ball screw). The invention proposes embodying the electric motor as a transverse flux motor with three phase windings; each phrase winding has a circular, annular excitation winding that is disposed inside U-shaped yokes, which are distributed over the circumference of the excitation winding. This embodiment of the electric motor permits a compact design of the electric motor in an annular, hollow shaft design so that the reduction gear and the rotation / translation conversion gear can be disposed at least partially inside the electric motor.

The method for treating high sulfur content and high concentration organic waste water produced in industrial process includes wet oxidation and electric multiphase catalytic oxidation. Firstly, the diluted said waste water is undergone the pretreatment by using wet air oxidation method, under the condition of that reaction temp. is 255-260 deg.C, reaction pressure is 6.6-7.0 MPa and space velocity is 1.0-1.3 hr.(-1) the removing rate of COD can be up to 74-76%, then the pretreated waste water is undergone the process of after treatment by adopting electric multiphase catalytic oxidation, under the reaction condition of that electric current is 1.0-2.5A, voltage is 6-12V and treatment time is 1-7 hr. the removing rate of COD can be up to 60-68%. After treatment by adopting the above-mentioned two methods the total removing rate of COD can be up to 89.2%-92.3%.

A sigma-delta A / D converter includes an A / D converter configured to output a digital signal, a signal-magnitude detecting circuit coupled to the output of the A / D converter to output a control signal responsive to a magnitude indicated by the digital signal, a D / A converter coupled to the output of the A / D converter and the output of the signal-magnitude detecting circuit to output an analog signal having a signal level responsive to the digital signal and the control signal, a differential circuit coupled to an external analog input and the output of the D / A converter to output a differential between the external analog input and the analog signal, and a filter circuit to couple between the output of the differential circuit and an input of the A / D converter, wherein the D / A converter is configured to control, in response to the control signal, a capacitance of a capacitor that discharges following charging of electric charge to supply an electric current of the analog signal.

The invention relates to a porosity echelon distribution pole piece, a preparation method and application thereof. The pole piece comprises a current collector, and a first film layer and a second film layer which are sequentially arranged on the current collector, and the porosity of the first film layer is lower than that of the second film layer. According to the method, a pore-forming agent isused for improving the porosity of the second film layer, and furthermore, a distribution window of the porosity is controlled in a multi-dimensional manner through accumulation of different particlesizes, cold pressing and low-temperature vacuum baking processes, so that the porosity of the pole piece is improved, the influence on the thickness of the pole piece is relatively small, and the pole piece has the characteristics of high industrialization degree, low cost and high yield and has a wide application prospect.

A lithium-titanium complex oxide whose total water generation amount and total carbon dioxide generation amount measured by thermal decomposition GC-MS are preferably 1500 wt ppm or less and 2000 wt ppm or less, respectively, is obtained by subjecting a mixture of titanium compound and lithium compound to a heat treatment at 600° C. or above, cooling the obtained reaction product to 50° C. or below, and then subjecting the cooled reaction product to a reheat treatment involving heating to the maximum temperature of 300 to 700° C. and then cooling, wherein the dew point of the ambience of the reheat treatment is controlled at −30° C. or below at a temperature of 200° C. or above.

A method for ciphering / deciphering the video data is characterized in that the ciphering component is embedded in the encoding process and adopts a strategy of grouping scrambling for ciphering the DCT coefficient of the digital video data. The deciphering data is embedded into the decoding process and adopts an inverse scrambling strategy which is reverse to the ciphering for deciphering the DCT coefficient of the digital video data. The frame movement compensating of the digital video can be simultaneously executed with scrambling to obtain a higher security. The invention embeds the ciphering / deciphering into the coding / decoding process and has the advantages of high ciphering speed and low actualizing difficulty. The technique of dynamic key is adopted and the invention has strong clear text attacking resistance. The effect of the ciphering / deciphering method of the invention is reduced to the minimum. The quality of the deciphered vide image does not have any loss compared with the video image before ciphering.

A handheld power tool, including a tool socket on a drive shaft for purposes of holding a tool, the drive shaft executing a rotating and partially tangentially striking movement using a tangential striking mechanism drivable by a drive. The tangential striking mechanism has an anvil associated with the drive shaft and a hammer associated with the drive, movable with respect to each other so as to strike each other axially when under the effect of the force of at least one first spring, and to strike each other tangentially when the anvil and the hammer are rotated. The hammer has a main mass, and an extra mass that is under the effect of a second spring couplable to the main mass.

The invention discloses a method for adjusting a sending rate in a bandwidth detection stage and a congestion control algorithm, and the method comprises the steps: firstly increasing the sending ratethrough a speed increasing factor g in a first RTT in the bandwidth detection stage, and then sending a round of data package, so as to carry out the bandwidth detection; judging the congestion condition of the current network according to whether ACK packets of all data packets sent in the round are received within a certain period of time; when the condition of the current network is good, adjusting the acceleration factor of the sending rate according to the current round-trip delay and the historical maximum transmission rate; when the condition of the current network is poor, reducing the sending rate to send a round of data packets, i.e., reducing the sending rate to empty the queue in the second RTT of the bandwidth detection stage; and in the remaining period of the bandwidth detection stage, determining the sending rate according to the real-time transmission rate. The method can give consideration to the transmission efficiency, convergence and fairness.

The invention belongs to the technical field of information security, and discloses a voiceprint authentication method and system for privacy protection and mobile terminal. During registration, the client collects user voice information and identity information, extracts a voiceprint feature vector, combines the encrypted feature vector and the identity information into a registered user template, and sends the registered user template to the server; The server stores the registered user template to complete registration; During login authentication, a client collects user voice information and identity information, and authentication i-is adopted; an authentication i- vector encryption algorithm is adopted to encrypt the feature vector, combines the encrypted feature vector and the identity information into an authentication user template, and sends the authentication user template to the server. And the server compares and calculates the authenticated user template and the registered user template to obtain an authentication result and returns the authentication result to the client. According to the invention, user data privacy protection in voiceprint authentication is realized under the condition that the voiceprint authentication efficiency is not influenced, and the method can be used for providing a privacy-efficient voiceprint login authentication system for a user inactual life.

A method for producing a rubber compound wherein the mechanical properties thereof are improved. In particular, the rubber compound has an increased elongation at rupture and / or increased tensile strength and / or increased tear strength and also a reduced compression set (DVR). The rubber compound includes a rubber which has at least two functional groups which can be cross-linked by hydrosilylation, a cross-linking agent consisting of hydrosiloxane or a hydrosiloxane derivative or a mixture of several hydrosiloxanes or derivatives, which include at least two SiH-groups per molecule in the center, a hydrosilylation catalyst system, at least one filling material and a coagent which can be cross-linked by hydrosilylation.

The invention relates to an eight-antenna channel estimation method for an OFDM demodulating end in the technical field of wireless transmission, which comprises the following steps: a base station terminal determines the positions of 24 reference signals in every subframe and equally distributes the positions of the 24 reference signals into eight transmitting antennas; the base station inserts data marks into the rest position of the subframe corresponding to each transmitting antenna; after the data marks are precoded, sending signals are transmitted to a mobile terminal by the eight transmitting antennas; the mobile terminal receives the signals and reestablish the subframed, and then obtains channel fading coefficients of each transmitting antenna according to the positions of the reference signals, and finally obtains fading coefficients of the positions of virtual reference signals; and the mobile terminal obtains the fading coefficients of the corresponding channels of the eight transmitting antennas at other positions according to the linear interpolation, thus obtaining the optimized channel estimation value.

The invention discloses a heat-conducting fluid for reducing internal temperature rise of mass concrete and a preparation method thereof. The method comprises the following steps: step 1, adding 1 part of cetane microcapsules by mass to 3-10 parts of water by mass, and under the condition of stirring, adding 0.04-0.06 part of 5wt% hydroxymethyl cellulose water solution by mass at room temperature to prepare phase-change material microcapsule suspending liquid, wherein the wall material of the cetane microcapsules is polyurea-melamine resin, the phase change temperature is 17.42 DEG C, the enthalpy of phase change is 147.93J / g, and the range of the particle size is from 1.51 to 10.48mu m; and step 2, adjusting the pH of the phase-change material microcapsule suspending liquid obtained in the step 1 to be equal to 8+ / -1, and then, stirring continuously to obtain the phase-change material microcapsule suspending liquid with stable suspension property, namely the heat-conducting fluid for reducing the internal temperature rise of the mass concrete. The heat-conducting fluid has high suspension stability, higher apparent specific heat and good flowability.

A method for producing a rubber compound wherein the mechanical properties thereof are improved. In particular, the rubber compound has an increased elongation at rupture and / or increased tensile strength and / or increased tear strength and also a reduced compression set (DVR). The rubber compound includes a rubber which has at least two functional groups which can be cross-linked by hydrosilylation, a cross-linking agent consisting of hydrosiloxane or a hydrosiloxane derivative or a mixture of several hydrosiloxanes or derivatives, which include at least two SiH-groups per molecule in the centre, a hydrosilylation catalyst system, at least one filling material and a coagent which can be cross-linked by hydrosilylation.

The invention relates to the technical field of lithium ion batteries, in particular to a lithium iron phosphate anode material and a lithium iron phosphate secondary battery. The lithium iron phosphate anode material is prepared from, by weight, 70-92 parts of lithium iron phosphate, 0-8 parts of scattered conductive agents, 0-8 parts of concentrated conductive agents, 0-20 parts of collaborative conductive agents, 1-6 parts of binding agents and 0-2 parts of other auxiliaries. The positive electrode of the lithium iron phosphate secondary battery is prepared from the lithium iron phosphate anode material. According to the lithium iron phosphate anode material, the scattered conductive agents, the concentrated conductive agents and the collaborative conductive agents are compounded and used in a multi-dimensional mode, a complete conductive and bonding network is built, the internal resistance of the lithium iron phosphate secondary battery can be basically not increased or slightly increased when large capacity discharge is conducted, and the power of the lithium iron phosphate secondary battery is increased, and the cycle life of the lithium iron phosphate secondary battery is prolonged. The internal resistance of the lithium iron phosphate secondary battery can be basically not increased or slightly increased when large capacity discharge is conducted, the power is high, and the cycle life is long.

The invention discloses a single-stage, multi-stage and variable-stage rotational flow air floatation oil-containing sewage treatment device, which comprises an outer shell comprising all stages of cylinder bodies, an upper seal head and a lower seal head, an inlet and outlet pipeline part comprising all stages of overflow pipes, all stages of reflux pipes, an underflow pipe and a central verticalpipe, and an internal structure comprising all stages of water distribution pipes, all stages of flow guide plates, annular channels and treated water collecting plates, wherein the first-stage overflow pipe is positioned at the top of the upper seal head, other overflow pipes are positioned on the upper side surfaces of various stages of the cylinder bodies, the underflow pipe is positioned at the lower seal head, various stages of the reflux pipes penetrate through various stages of the cylinder bodies and are communicated with various stages of the annular channels, the central vertical pipe is located on the axis of the cylinder bodies and penetrates through the lower seal head, the annular channels and various stages of the cylinder bodies, the first-stage water distribution pipe ispositioned at the top of the central vertical pipe, other water distribution pipes are positioned at the bottoms of the annular channels, various stages of the flow guide plates spirally incline upwards and are fixed on the inner walls of various stages of the cylinder bodies, and the treated water collecting plate is positioned between the two cylinder bodies. The device of the invention is compact in structure, easy and convenient to operate, wide in applicability and good in oil removal effect, wherein the single-body multi-stage design meets the requirements of different effluent qualitiesand treatment capacities.

A fryer includes: a housing; an oil vat; a combusting and heating unit; an operational panel provided at a front face of the housing; and an exhaust pipe provided at a rear of the oil vat. A cooling path is defined at a rear of the operational panel in the housing. An external pipe is provided at a rear of the housing to surround the exhaust pipe and has an exhaust port of which the sectional opening area is narrowed at an upper end of the exhaust pipe. An air passage is defined by the housing and through which the cooling path and the external pipe are connected.

The invention provides a preparation method of a light-colored TDI (toluene diisocynate) based polyisocyanate composition curing agent with stable storage color number. The method comprises steps as follows: a) TDI is purified, and the content of dichloroimide substances is controlled to be not higher than 3 ppm; b) excessive TDI with the content of dichloramine not higher than 3 ppm and trimethylolpropane or a mixture of trimethylolpropane and small molecular dibasic alcohol are subjected to a reaction, a reaction liquid is prepared, and the polyisocyanate composition curing agent is obtainedthrough short-range film evaporation and solvent dilution. Composition obtained with the method can be used for a coating curing agent, the curing agent has the APHA color number smaller than 15 andis stable to store.

The invention discloses a terrain gravity wave drag parameterization method considering a horizontal transmission factor. The method comprises the steps of calculating a block altitude when airflow passes a terrain; obtaining spectral distribution of the terrain, starting from the first model layer located above the block altitude, and conducting the following processing steps to calculate the amplitude of a terrain gravity wave; calculating a fluctuation Richardson number; calculating a saturation amplitude of the terrain gravity wave and a vertical flux of a horizontal momentum of the terrain gravity wave if the fluctuation Richardson number is smaller than a critical value; calculating a momentum flux absorbed by mean flow of the gravity wave; continuing to perform vertical transmission till a mode top is reached if the fluctuation Richardson number is larger than the critical value Rie. By means of the terrain gravity wave drag parameterization method considering the horizontal transmission factor, the horizontal transmission of the gravity wave is processed, the influence of the terrain gravity wave on atmospheric circulation can be better represented, and the simulating capability of a numerical mode is improved.

The invention provides a dural / spinal dural biological patch material, a preparation method and application thereof. The obtained biological patch material is especially suitable for repair of dural / spinal dural defect, can maintain stable and non-degradable within 6 months-2 years after being implanted into the human body or animals, and can degrade gradually after more than 2 years. While ensuring certain mechanical properties and liquid seepage resistance, the biological patch material also has biocompatibility, has greatly reduced risks of postoperative complications and side effects, and meets the special requirements for dural / spinal dural defect repair materials.

The invention relates to a P2-phase layered oxide, a preparation method and an application of the P2-phase layered oxide in a sodium ion battery, and belongs to the technical field of sodium ion battery materials. The chemical formula of the material is Na0.67Mn<1-2x>MxTixO2, wherein 0 < x < 0.2, and M is selected from Cu, Mg or Zn. According to the preparation method, Mg / Cu / Zn elements and Ti elements are used for replacing Mn elements in the P2-phase Na0.67MnO2 material together, and a series of P2-phase materials are synthesized. The material has large specific capacity. In addition, the material also has good rate capability and cycling stability, and the change of the cell volume in a complete charging / discharging process is only 3.2%. For production and storage problems, the method also has important significance for practical application of the layered positive electrode oxide material for the sodium-ion battery.

The invention discloses a dry quenching gas regulation method of coal internal heat low temperature pyrolysis. The method comprises: performing tar separation and collection to gas which is generated from a pyrolysis segment through pyrolysis, returning a part of cool purified gas to a quenching segment, allowing heat transfer to be carried out between hot semi-coke in the quenching segment and the part of cool purified gas to reduce the temperature of semi-coke to a non-reignition temperature, and discharging the hot gas; leading the hot gas after heat transfer from the quenching segment to the pyrolysis segment; leading a combustion-supporting gas from micropores of a lattice wall or a gas distribution channel to the pyrolysis segment, allowing the combustion-supporting gas to meet the hot gas for combustion; and mixing high-temperature gas produced from combustion with uncombusted hot gas to form high-temperature mixed gas meeting the temperature and flow of low temperature pyrolysis requirements, and performing heat transfer between the high-temperature mixed gas and coal in the pyrolysis segment so as to carry out coal pyrolysis. According to the method, in a situation that the circulating gas amount in the pyrolysis segment is basically kept constant, the gas circulating amount in the quenching segment is further increased, so that the quenching effect is ensued, and the physical heat of semi-coke can be fully used, and therefore, the energy saving effect is good. According to the method, since no dependent combustor, combustion gas blower fan, pipeline or valve is required, so that the system is further simplified.

The invention discloses application of OsDRAP1 genes of rice in enhancing plant drought resistance and provides application of proteins shown in the second sequence of a sequence list in enhancing the plant drought resistance and application of encoding genes of the proteins shown in the second sequence of the sequence list in enhancing the plant drought resistance. Experimental results show that the expression quantity of the OsDRAP1 genes increases rapidly under high salinity stress and drought stress, but has a small increase under low-temperature stress. OsDRAP1 transcription factors can be combined with a GCC box and a DRE in a downstream gene promoter area to regulate and control expression of downstream genes and participate in plant stress response reaction. The over-expression OsDRAP1 genes of the rice can improve the ability of drought-stress resisting of the rice. The application of the OsDRAP1 genes of the rice in enhancing the plant drought resistance has important theoretical and practical significance in improving and enhancing the stress resistance of the rice and accelerating the process of stress-resisting molecular breeding.