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78 results about "Free diffusion" patented technology

The word 'diffusion' means free movement across distance, with or without the presence of a barrier. However, there is a phenomenon known as facilitated diffusion which occurs at the cellular level. The cell does not allow free radicals and other harmful substances to enter and harm the cell organs.

Methods of synthesizing cell-free protein

One embodiment of the present invention is a diffusion continuous batch cell-free protein-synthesis method characterized simultaneously by continuously supplying substrate and energy source molecules in the supply phase to the reaction phase by the free diffusion via interface between both phases and by transferring by-products formed in the reaction phase by enhancing the efficiency of the synthesis reaction by prolonging the reaction lifetime by directly contacting a synthesis reaction mixture (reaction phase) containing a biological extract with a substrate- and energy source-supplying solution (supply phase) without using barrier such as semi-permeable membrane or ultrafiltration membrane in a general cell-free protein-synthesis reaction means. Another embodiment of the present invention is a dilution batch cell-free protein synthesis method characterized by enhancing the efficiency of the protein synthesis by prolonging the reaction lifetime by adding a diluting solution to the reaction mixture after pre-incubating the reaction mixture in a cell-free protein-synthesis reaction means using a wheat-embryo extract. Another embodiment of the present invention is a method characterized by enhancing the efficiency of the synthesis reaction simultaneously by re-supplying substrate and energy sources necessary for the protein synthesis (e.g., amino acids, ATP, GTP, creatine phosphate) to the reaction mixture using a gel filtration column and / or semipermeable membrane and by discontinuously removing by-products formed during the reaction after the synthesis reaction stops in the batch cell-free protein synthesis method.
Owner:CELLFREE SCI

Sewage treatment unit and method using bioelectrochemistry to aid membrane bioreactor

The invention relates to a sewage treatment unit and method using bioelectrochemistry to aid membrane bioreactor. Graphite filler is used as an anode which is connected with an external circuit through a graphite bar. A membrane separating component in a cathode chamber serves as an MBR membrane separating component and an MFC cathode. A conductive graphite bar which is connected with the external circuit is embedded on the membrane separating component. The cathode chamber and a anode chamber are separated through a separating membrane, so that dissolved oxygen is effectively prevented from diffusing to the anode chamber, and proton free diffusion is allowed. When organic sewage enters from the anode chamber, the anode chamber is oxidized by electrogenesis microorganisms to generate electron and proton under anaerobic conditions, the electron is transmitted to the graphite filler electrode through the microorganisms and then to the cathode through the circuit, and the proton passes the separating membrane to enter the cathode chamber under potential difference and diffusion effects of the cathode chamber and the anode chamber and reacts with oxygen and electron transmitted by the external circuit to generate water and form an internal circuit. The sewage entering the cathode chamber through a communication pipe is pumped and discharged through the membrane separating component.
Owner:TONGJI UNIV

A method for measuring cytoplasm viscosity based on quantum dot three-dimensional tracing

A method for measuring cytoplasm viscosity based on quantum dot three-dimensional tracing is disclosed. The method includes firstly introducing quantum dots into cells through a lipid Lipo-2000 transfection manner to achieve cell labeling; subjecting the single and recognizable quantum dots dispersed in the cells to three dimensional positioning and tracing by adopting an optical modulating mannerthrough a build quantum dot three-dimensional imaging system; further solving mean square displacement values MSDs which are motion parameters of the quantum dots by utilizing three-dimensional motion information; selecting quantum dots meeting free diffusion characteristics according to mathematical characteristics of the MSDs; finally solving diffusion coefficient D of the quantum dots in cytoplasm according to the MSD values for all the quantum dots meeting free diffusion characteristics; and further acquiring the cytoplasm viscosity according to a Stokes-Einstein equation. In a state thatcells survive, the cytoplasm viscosity can be accurately acquired by the method, visual three-dimensional motion information of molecules in cytoplasm can be obtained, and technical bases for researching intracellular material transportation, signal transmission, metabolism, differentiation, and the like are provided.
Owner:XI AN JIAOTONG UNIV

Hybrid material based on macrocyclic compound photosensitive dye and titanium dioxide and preparation method thereof, and application of hybrid material to photocatalysis

The invention discloses a hybrid material based on a macrocyclic compound photosensitive dye and titanium dioxide and a preparation method thereof, and application of the hybrid material to photocatalysis. The hybrid material comprises the macrocyclic compound photosensitive dye and titanium dioxide, wherein the macrocyclic compound photosensitive dye is a calixarene compound or porphyrin compound. The invention also discloses the preparation method for the hybrid material based on the macrocyclic compound photosensitive dye and titanium dioxide, and application of the hybrid material to photocatalysis. The organic-inorganic hybrid material prepared from the macrocyclic compound photosensitive dye and titanium dioxide has a hierarchical porous structure, and can improve the free diffusionof gas and surface adsorption of CO2, increase the adsorption quantity and activation degree of reactants, reduce the possibility of electron-hole recombination and effectively enhance photocatalysisefficiency. Moreover, the hybrid material of the invention has high stability and is improved in cyclic utilization stability in photocatalysis.
Owner:SUN YAT SEN UNIV

Hollow porous cube nanometer nickel sulfide and preparing method thereof

The invention discloses hollow porous cube nanometer nickel sulfide and a preparing method thereof. The material is of a hollow cube structure, has a coarse and porous surface and is formed by accumulating particles. In the method, with PBA as the precursor, the NiS of the hollow porous cube structure is prepared. The method is simple, easy to operate, short in reaction cycle and friendly to the environment. The synthesized nickel sulfide material is uniform in particle size, unified in morphology and stable and reliable in performance. Due to the hollow porous structure of the NiS, hydrogen peroxide is freely dispersed among the NiS nanoparticles; due to the huge specific surface area, hydrogen peroxide can be better adsorbed to the surface of the NiS for an electrocatalytic oxidation reaction.
Owner:芜湖数字信息产业园有限公司

Sand-blasting-free diffusion nickel plating technology of rectification monocrystalline silicon wafer

Provided in the invention is a sand-blasting-free diffusion nickel plating technology of a rectification monocrystalline silicon wafer. According to the invention, the oxidation technology, the electrolysis technology, and the ultra sand coarsening technology technology are used for replacing the traditional sand blasting technology. The provided technology has advantages of energy conservation and power consumption reduction, good noise-free and dust-free properties, low production cost, and high product quality and the like and thus is the preferred one for technical transformation of the ectification monocrystalline silicon wafer diffusion nickel plating enterprise.
Owner:程德明

High-precision and interval-controllable electrode and preparing method thereof

The invention provides a high-precision and interval-controllable electrode and a preparing method of high-precision and interval-controllable electrodes. The method comprises the steps that firstly, a substrate is designed and prepared, wherein high surface energy regions and lower surface energy regions are alternately arranged on the substrate; the high surface energy regions are fully paved with a solution or emulsion including conductive fillers; then, evaporation diffusion is conducted, along with the volatilization of the solvent, the freely-diffused conductive fillers are gathered and arranged on the boundary regions, adjacent to the low surface energy regions, of the high surface energy regions, the lower surface energy regions serve as dams and are used for controlling the further diffusion of liquid drops, the diffused and arranged conductive fillers are solidified through heating or photon sintering and then form interval-controllable high-precision electrodes, and the intervals of the electrodes are controlled by the width of the high surface energy regions. The high-precision and interval-controllable electrode prepared through the method has important application on the aspect of preparing high-precision electrodes of devices such as transparent conductive films, high-end sensors, transistors, storage devices and capacitors.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Hybrid material on basis of photosensitive metal-organic coordination nanometer cages and titanium dioxide, method for preparing hybrid material and application thereof

The invention discloses a hybrid material on the basis of photosensitive metal-organic coordination nanometer cages and titanium dioxide, a method for preparing the hybrid material and application thereof. The hybrid material on the basis of the photosensitive metal-organic coordination nanometer cages and the titanium dioxide comprises the photosensitive metal-organic coordination nanometer cagesand the titanium dioxide. The hybrid material can be applied to photocatalysis. The hybrid material, the method and the application have the advantages that the organic-inorganic hybrid material madeof the photosensitive metal-organic coordination nanometer cages and the titanium dioxide is of a hierarchical porous structure, accordingly, free gas diffusion and CO2 surface adsorption can be improved, the adsorption quantities of reactants can be increased, the activation level of the reactants can be upgraded, the electron-hole pair composition probability further can be lowered, and the photocatalytic efficiency can be effectively enhanced.
Owner:SUN YAT SEN UNIV

Method and device for detecting ultrasonic flow by time-difference method

ActiveCN102829829AAchieving self-compensationAvoid influences when measuring calculationsVolume/mass flow measurementUltrasonic sensorTime difference
The invention discloses a method and a device for detecting ultrasonic flow by the time-difference method. The method includes: enabling to-be-tested gases to be freely spread into a static speed pipe when the to-be-tested gases flow through a pipe section of a measuring pipe provided with an ultrasonic transducer group, the static speed pipe is provided with ultrasonic transducers used for emitting and receiving ultrasonic waves into the static speed pipe, sonic path distance of the ultrasonic waves spreading in the static speed pipe can be obtained according to arrangement of the ultrasonic transducers on the static speed pipe, actual spreading time of the ultrasonic waves in the sonic path distance can be obtained by emitting and receiving the ultrasonic waves by the ultrasonic transducers in the static speed pipe, the spreading speed Cf of the ultrasonic waves can be obtained by dividing the actual spreading time of the ultrasonic waves in the static speed pipe by the sonic path distance, flow speed of the to-be-tested gases in the measuring pipe can be obtained by substituting the obtained spreading speed Cf of the ultrasonic waves into a calculation equation, and the flow of the to-be-tested gases can be obtained. By the method and the device for detecting the ultrasonic flow by the time-difference method, online detection of the spreading speed of the ultrasonic waves can be realized, and measuring accuracy can be improved.
Owner:GL TECH CO LTD
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