7results about How to "Increase permeation" patented technology

The utility model discloses a wastewater treatment device based on a reverse osmosis membrane, which relates to the technical field of wastewater treatment and comprises a wastewater treatment tank and a reverse osmosis filter unit, the wastewater treatment box is a hollow box body with a square structure; the reverse osmosis filtering unit comprises a transfer box, a water purifying chamber, a pressurizing chamber, a push plate, a sealing silica gel plate, a one-way valve and reverse osmosis membranes, and one reverse osmosis membrane is embedded in one side, close to the water purifying chamber, of the L-shaped transfer box. The device is provided with the reliable reverse osmosis filter unit, the two reverse osmosis membranes are arranged on the inner corner side of the L-shaped transfer box, the permeation amount of pure water can be increased, the sewage treatment efficiency is further improved, the two pressurizing chambers are arranged, enough pressure difference between the two sides of the membranes is guaranteed, and in addition, the water quality is improved. The flow rate of liquid at the sewage discharge pipe can be regulated and controlled through the electromagnetic valve, so that the retention time of the sewage in the transfer box can be controlled, and the filtration fineness can be controlled.

The invention provides a process and a device for purifying high-purity isopropanol. Impurities such as metal ions, water and particles are efficiently removed by adopting the technological processes such as ion exchange, pervaporation, distillation and filtration, the prepared electronic-grade isopropanol can reach 99.9% or above, the content of each metal ion is smaller than 1 ppb, and the application requirements of the microelectronic industry are met. The electronic-grade isopropanol produced by adopting the process flow and the equipment disclosed by the invention is high in yield, stable in product quality and high in practicability.

The present invention relates to use of cell-penetrating peptide variants for wound healing. Cell-penetrating peptides according to the present invention have the effect of improving cell permeation, cell proliferation, cell migration and blood vessel formation, and thus can be used for cell-penetrating delivery, wound healing, and angiogenesis promotion. Particularly, the cell-penetrating peptides have an excellent effect of treating diabetic wounds (ulcers), which are intractable, and thus can be effectively used for wound healing.

The utility model provides a kind of trousers type sanitary towel, including trousers and the absorption part for absorbing secretion for being arranged on the inner surface of the trousers, the inner surface of the trousers and located at the lower abdomen of human body is equipped with essential oil nursing device for releasing essential oil to carry out nursing to human body, the outer surface of the trousers and with the position corresponding place of the essential oil nursing device is equipped with heating device for emitting heat and keeping lower abdomen of human body warm and can heat essential oil nursing device to accelerate essential oil of essential oil nursing device to be absorbed by human body, heating device and the trousers between being equipped with for adjusting the position device of heating device on trousers position;The essential oil nursing device includes fixed layer being arranged on the inner surface of the trousers, essential oil bag for releasing essential oil when being under predetermined external force being arranged on the fixed layer, diffusion layer being arranged on the fixed layer and located in the side of essential oil bag for limiting essential oil bag and when essential oil bag releases essential oil, essential oil is diffused open.

The invention relates to the technical field of total heat exchange membranes, and discloses a total heat exchange membrane preparation method, which comprises: S1, carrying out vacuum aluminum plating on a porous base membrane, and forming an aluminum plating layer on one side of the porous base membrane; s2, atomizing one side of the aluminum-plated layer through an acid solution to form a porous structure, wherein the obtained porous area accounts for 50-90% of the total area of the aluminum-plated layer; s3, the side, opposite to the aluminized layer, of the porous base membrane is coated with the hydrophilic composite filler, pores of the porous base membrane are filled with the hydrophilic composite filler, meanwhile, a coating is formed, and the total heat exchange membrane is obtained after drying. By arranging the aluminum-plated layer and coating the hydrophilic composite filler, the heat conductivity coefficient and the water vapor permeation amount of the total heat exchange membrane are improved, so that the total heat exchange efficiency can be improved, and the aluminum-plated layer can improve the mechanical property.

This invention relates to a butylphthalide cationic nanoemulsion, its preparation method, and its application, belonging to the field of pharmaceutical technology. The butylphthalide cationic nanoemulsion comprises an oil phase, an aqueous phase, butylphthalide, an emulsifier, a co-emulsifier, an osmotic pressure regulator, and a cationic surfactant. The butylphthalide content in the nanoemulsion is 0.30%–2.50% by mass. The average particle size of the butylphthalide cationic nanoemulsion is 80–200 nm, the polydispersity index is 0.070–0.200, and the zeta potential is 20–30 mV. This invention solves the problems of poor water solubility and low stability of butylphthalide by preparing it into a nanoemulsion formulation; furthermore, by administering it via nasal administration, it meets the need for rapid neuroprotection in ischemic stroke.

This invention provides a radar radome for sealing a radar antenna array. The radar antenna array is disposed on an antenna base. The radar radome includes: a radome body connected to the antenna base and covering the radar antenna array to form a cavity sealing the radar antenna array, with the inner surface of the radome body facing the radar antenna array; a groove recessed from the inner surface, the position of which corresponds to the position of the radar antenna array to increase the volume of the cavity corresponding to the radar antenna array; and a metallized component embedded from the inner surface into the radome body and located outside the groove in the horizontal direction to extend the beamwidth of the radar antenna array in the horizontal direction.