107results about How to "Increased pore size" patented technology

An ammonia purification system includes a hydrocarbon removal station that removes hydrocarbons from gaseous ammonia via adsorption, a moisture removal station that removes water from gaseous ammonia via adsorption, and a distillation station including a distillation column connected with a condenser to facilitate removal of impurities from ammonia and condensation of gaseous ammonia to form a purified liquid ammonia product. The system further includes a storage tank to receive purified ammonia, a remote station connected with the storage tank, and a vaporizer connected with the storage tank. The vaporizer is configured to receive and vaporize liquid ammonia from the storage tank and deliver gaseous ammonia back to the storage tank so as to facilitate pumping of the ammonia to the remote station based upon a vapor pressure established within the storage tank.

The present invention concerns a method to produce a porous oxygen-silicon insulating layer comprising following steps:applying a silicon oxygen layer to a substrateexposing the said substrate to a HF ambient.

Liposomes of a size of less than 200 nanometers target tumors and preferentially deliver imipramine blue to tumors, including brain tumors such as gliomas. The imipramine blue decreases the invasiveness of the tumors, and inhibits tumor metastasis. The liposomes include cholesterol and chemically pure phospholipids that are essentially neutral and contain saturated fatty acids of between 16 and 18 carbon atoms, such as distearoylphosphatidyl choline, and can also include one or more pegylated phospholipids, such as DSPE-PEG.

The invention provides a simple, rapid and cost-effective metal oxide-assisted laser desorption / ionization mass spectrometry (MOALDI MS) without the addition of light-absorbing organic-matrix, comprising the use of (a) an inorganic metal oxide with light absorbing capability as an assisting material to render desorption / ionization of samples in laser desorption / ionization mass spectrometry and (b) a citric acid buffer as the proton source for enhancing the ionization efficiency for analytes. Metal oxide assisting materials is not only restricted to the uses of films. Metal oxide nanoparticles are also suitable to be used as the assisting materials. Low matrix background, stable surface feature, homogeneous sample deposition, and wide detectable mass range are the merits of MOALDI MS.

The invention discloses a method for preparing activated carbon from semi-coke and a device used in the method. The method comprises the following steps of: taking semi-coke of which the volatile matter is greater than 5% and the thermal stability is greater than 70%, screening and feeding the semi-coke of which the granularity is 5-20mm into a rake-type activating furnace (8) to be subjected to activation treatment to generate the activated carbon; discharging the activated carbon from the rake-type activating furnace (8), cooling at a helix cooling machine (6) and conveying through a belt conveyer (7); and finally entering an activated carbon packaging period to be selected and packaged. According to the method, the structural characteristics of organic matter components and micro-pores of a semi-coke product are sufficiently utilized, and with the combination of the operation control principle of the domestic activation furnace, a novel process control method is innovated, and the activation process of the rake-type furnace is applied to the production process of the semi-coke-made activated carbon, so that the activation process control precision of a product is greatly improved, activated carbon products of higher quality are produced, the additional value of a semi-coke product is greatly increased, the application space of the semi-coke is widened, and the market requirements of the activated carbon are met.

The present invention discloses a novel electrode-catalyst for direct methanol fuel cell prepared by introducing a carbon precursor into pores of a wormhole-like molecular sieve template, carbonizing the carbon precursor, removing the molecular sieve template to obtain a wormhole-like mesoporous carbon having a high specific surface of 800-1000 m2 / g and a pore size of 4-5 nm, and depositing catalyst metal such as Pt—Ru on the mesoporous carbon.

A microporous polyethylene membrane made of a polyethylene resin having a ratio (mass-average molecular weight / number-average molecular weight) of 5 to 300 and comprising 1% or more by mass of ultra-high-molecular-weight polyethylene having a mass-average molecular weight of 7×105 or more, the microporous polyethylene membrane comprising (a) a coarse-structure layer having an average pore diameter of more than 0.04 μm, which is formed on at least one surface, and (b) a dense-structure layer having an average pore diameter of 0.04 μm or less, an area ratio of the coarse-structure layer to the dense-structure layer in a membrane cross section being 0.1 to 0.8.

The invention relates to a nano yarn reinforcement electrostatic spinning fiber texture engineering scaffold and a method for producing the same. The method comprises the processes of building a production device, preparing poly-L-lactic acid / hexafluoroisopropanol electrostatic spinning solution, connecting with high pressure to carry out electrostatic spinning, combining nano fibers to form yarns, collecting nano yarns and nano fibers and the like. The texture engineering scaffold has good tensile mechanical property and is beneficial to keeping the integral structure of the scaffold during the material processing and texture regenerating processes; and the scaffold has large pores to facilitate cells to move into the texture. In addition, the scaffold also has the characteristics of simplicity in producing method and convenience in operation, and is expected to be applied to industrial production. The method is convenient to operate and is low in cost, the tensile mechanical property and pore size of a common electrostatic spinning nano fiber scaffold can be effectively improved, and the method is expected to be applied to the fields of tissues and organs of tendon, ligament, mules, vessel and the like which have high requirements on the tensile mechanical property.

The invention discloses a carbon nano tube reinforced aluminum alloy composite material prepared through squeeze casting method, which relates to a preparation method of carbon nano tube reinforced metal composite material. The invention solves the problem that the distribution of the carbon nano tube in the carbon nano tube reinforced aluminum alloy composite material obtained through the existing preparation method is not even, and the interfacial associativity of the carbon nano tube and the metal base body is poor. The method is as follows: 1, the mixed solution is prepared; 2, the mixed solution is processed in ultrasonic way; 3, the step 2 is repeated; 4, the dried precast block is prepared; 5, the sintered precast block is prepared; 6, melting aluminum alloy is infiltrated to holes of the sintered precast block under the pressure role, and is solidified under the pressure role to obtain the carbon nano tube reinforced aluminum alloy composite material. The carbon nano tubes in the carbon nano tube reinforced aluminum alloy composite material obtained in the invention are evenly distributed, and the interfacial associativity is good.

Electrolyte supply tanks and bubbler tanks for oxyhydrogen gas generation systems are provided which eliminate the introduction of electrolyte and water into the induction systems of internal combustion engines. Both types of tanks are equipped with porous polyethylene gas diffusers which break up incoming gas into microscopic bubbles, thereby facilitating the absorption of electrolyte mist and droplets returning to the electrolyte supply tank and minimizing splashing of incoming gas in bubbler tanks. Air diffusers having an average pore diameter of about 70 μm are installed near the bottom of the electrolyte supply tanks, while air diffusers having an average pore diameter of about 35 μm are installed near the bottom of the bubbler tanks.