244results about How to "Stable quantity" patented technology

The present invention relates to recombinant gelatins and compositions thereof, and methods of producing and using the same.

Described herein are methods, systems, and articles that are useful for controlling a fluid blending system, such as a fluid utility system. The methods, systems, and articles of this invention allow for the control of both a quantity metric (e.g., pressure) of the blended fluid the fluid blending system as well as at least one quality metric of a blended fluid in a fluid blending system. For example, the methods, systems, and articles of this invention provide for the simultaneous control of both the pressure and quality of fuel gas within a fuel gas header system.

A method for limiting speed of message includes presetting width of time window and number of message to pass , obtaining current system time and calculating out passed time of current time window ( CTW ) , judging whether passed time of CTW is less that time window width or not , allowing message to pass CTW and refreshing end time of CTW if it is not , judging whether number of passed message is greater that number of message being allowed to pass or not if it is , calculating out message number exceeding to pass , making flow delay for them then allowing them to pas if it is or otherwise allowing message in CTW to pass and refreshing end time of CTW .

A fuel cell system which reduces a quantity of hydrogen in hydrogen off-gas discharged from a fuel cell, and then discharges the hydrogen off-gas to atmosphere, includes an adjusting valve that suppresses a pulsed change in a flow quantity of hydrogen off-gas, which is intermittently discharged from the fuel cell to an exhaust passage and therefore flows in the exhaust passage in a pulse manner, such that the flow quantity becomes constant (stable).

A toner including at least a binder resin; a colorant; and a charge controlling agent, in which the binder resin includes at least a polyester resin having a molecular weight distribution such that components having a molecular weight not greater than 500 are included in an amount of 4% by weight and at least a peak is present in a range of from 3,000 to 9,000 when measured by Gel Permeation Chromatography. In addition, the binder resin does not include a tetrahydrofuran-insoluble compound and the charge controlling agent is a resin charge controlling agent including at least units obtained from a monomer including a sulfonate group; an aromatic monomer including an electron absorption group; and an acrylic ester and/or a methacrylic ester monomer.

The embodiment of the invention provides a self-adaptive dynamic fingerprint library construction method of an LED visible light indoor positioning system and relates to the field of LED visible light indoor positioning technologies, wherein the self-adaptive dynamic fingerprint library construction method can effectively improve the positioning speed and positioning accuracy during user online positioning experience. The method includes the steps that a plurality of sampling points at certain intervals are selected with a sampling point seriously affecting light information crossing of multiple LED lamps as the center and are placed in an original sampling point set for sampling point expansion, a final sampling point set is generated, ID serial numbers of all LED light sources capable of being received by each sampling point in the ultimate sampling point set and ultimate signal strengths corresponding to the ID serial numbers are determined through calculation, the ID serial numbers and the ultimate signal strengths are standardized according to the vector format like ((ID1, RSS1), (ID2, RSS2)... (IDn, RSSn)) and are stored in a fingerprint library, and the fingerprint library is constructed.

In a toner having toner particles which comprise toner base particles containing at least a colorant, a release agent and a polar resin, and an inorganic fine powder, the polar resin is a resin having at least a polyester unit, synthesized in the presence of an aromatic carboxylic acid titanium compound used as a catalyst, and has an acid value of from 3 mgKOH/g to 35 mgKOH/g. The toner base particles are obtained by carrying out granulation in an aqueous medium, and the toner has a weight-average particle diameter of from 4.0 μm to 10.0 μm.

The present invention aims at providing a lighting apparatus which is simple in configuration and which is capable of providing a stable light quantity from a light source constituted by an LED or the like. In the present invention, attention is paid to the fact that an applied voltage to an LED changes in correspondence to a temperature of the LED, and hence a temperature control device constituted by a Peltier element or the like is operated in correspondence to the quantity of change in applied voltage to the LED.

An electrical energy storage system that can store both grid-based electrical power when electricity prices are low or renewable power generated on-site. It can release the stored electricity for consumer applications when necessary based on a software program and configuration. The system may be networked. The system comprises a port for receiving a central processing unit (CPU), and facilitates the use of different CPU products for different users and uses.

The invention relates to a multi-port regional gridding VRS (Virtual Reference Station) differential positioning information broadcasting device and a work method thereof, belonging to the field of measuring methods. The multi-port regional gridding VRS differential positioning information broadcasting device comprises a network RTK (Real Time Kinematic) system reference station, a data processing center and a data FM (Frequency Modulation) broadcasting unit, wherein the network RTK system reference station is connected with a data processing center server through optical fiber, and the data processing center server is connected with the data FM broadcasting unit through a serial port; and the data FM broadcasting unit is used for carrying out FM broadcasting on differential correction data packaged by a UDP (User Datagram Protocol). The work method comprises the steps of: receiving network RTK system reference station information by the data processing center, and dividing grids for the covered region of the network RTK system reference station; then solving all differential correction information of all grid virtual reference stations by utilizing a VRS algorithm, and then appointing an unique UDP port number for each grid virtual reference station and packaging the differential correction information by using the UDP protocol; finally, carrying out FM broadcasting on the UDP data packets, three-dimensional coordinates and UDP port numbers of all the grid virtual reference stations through the data FM broadcasting unit.

The invention discloses a serum-free culture medium for human umbilical cord MSCs (mesenchymal stem cells). The serum-free culture medium comprises the major ingredients of amino acid, inorganic salt ingredients, growth factors and albumin ingredients. The serum-free culture medium for human umbilical cord MSCs does not contain any serum ingredients; in addition, the ingredients are clear; the foreign protein pollution and pathogenic microorganism risks are avoided; the biosecurity problem of the MSCs clinic application is solved. When the serum-free culture medium provided by the invention is used for culturing the human umbilical cord MSCs, the high-quantity high-purity safe and high-quality umbilical cord MSCs can be obtained in vitro; meanwhile, the cell survival rate can be improved; the stem cell characteristics are maintained. The problem of insufficient cell quantity can be solved; the cell number, the survival rate and the immunophenotyping in each batch are more stable; the relevant index requirements are met.

A developer apparatus includes a developer carrying member, for carrying a developer to a developing portion, the developer carrying member including an electroconductive base and a resistance layer provided thereon; a developer feeding member for being supplied with a voltage to supply the developer to the developer carrying member; wherein a surface moving speed of the developer carrying member Vp [mm/sec], a resistance R1 (Ω) of the developer carrying member when an electric current applied the developer carrying member is 0.04 Vp [μA], and a resistance R2 (Ω) or the developer carrying member when the electric current applied to the developer carrying member is 4 Vp [μA], satisfy:

r1/R2<15.

When voltage changes occur in the battery used as a power supply in a fuel injection system, the amount of fuel injection also changes and the required amount of fuel injected cannot be obtained. To eliminate this problem, a fuel injector system is provided which has a fuel injection valve with at least one coil, a power supply, a power supply voltage detector, and a control unit for controlling the fuel injection valve. The control unit sets a reference value of a power supply voltages, and the above-mentioned fuel injection valve is controlled so as to obtain the required ampere-turns by reducing the resultant inductance of the coil when a power supply voltage detection value is less than the above-mentioned reference value, and the resultant inductance of the coil is increased when the power voltage detection value is greater than the reference value.

A plate wiping roller for the carved-plate gravure printing of paper money is made up through preparing slurry from PVC resin, plasticizer, filler, stabilizer, lubricant, monomer, teflon and modifier ABS, preparing raw roller, preheating the roller, coating said slurry on said roller and plasticizing. Its advantages are low cost and high quality.

An electrophotographic developing agent is provided including: toner particles including a binder resin, a colorant, and a charge control agent; and an external additive added to the surface of the toner particles, wherein the external additive includes a large particle diameter silica component having a mean primary particle diameter of 20 to 200 nm and surface treated with at least two different types of surface treatment agent; a small particle diameter silica component having a mean primary particle diameter of 5 to 20 nm and surface treated with at least two different types of surface treatment agent; and a hydrophobic strontium titanate. The electrophotographic developing agent includes the silcas that are surface treated with at least two different types of surface treatment agent and the hydrophobic strontium titanate as the external additive, thereby maintaining stable charge quantity and charge distribution in spite of environmental changes and long printing time to prevent fog and blurring.

The invention discloses a primary isolation culture method of adipose-derived stem cells. The primary isolation culture method comprises the following steps: (1) washing adipose tissues; (2) adding a mixed liquid of type-I collagenase and trypsase into the adipose tissues, wherein the volume of the mixed liquid is equal to the volumes of the adipose tissues; (3) adding FBS, covering a bottle cap, sealing, uniformly shaking, carrying out centrifugation, and discarding supernate after the centrifugation; (4) carrying out resuspension precipitation by virtue of a DMEM containing the FBS, uniformly blow-hitting to form cell suspension, and inoculating the cell suspension to a culture medium, wherein the volume ratio of precipitates to the DMEM containing the FBS is 1 to 1; (5) culturing the inoculated culture medium; and (6) transferring the cultured culturing medium into a cell incubator, and continuing to culture the culturing medium. Enzymolysis conditions explored in the primary isolation culture method are stable and efficient, the complete enzymolysis of the adipose tissues is achieved, and cells of each component are furthest released; on the premise that the activity of ADSCs is not influenced, the quantity of the ADSCs acquired in unit adipose volume is relatively stable.

The invention provides a switching electrode which has a small variation in resistance value even when a large amount of current is repeatedly cut off and can carry a stable amount of current even when it is continuously used. In the invention, the switching electrode is used in a switch which includes a first switching electrode tip (21) and a second switching electrode tip (22), brings the first switching electrode tip (21) and the second switching electrode tip (22) into surface contact with each other to carry a current, and separates the first switching electrode tip (21) and the second switching electrode tip (22) to cut off the current. At least one of contact surfaces of the first switching electrode tip (21) and the second switching electrode tip (22) is a flat surface having an uneven portion.