37 results about "CARBON DIOXIDE/OXYGEN" patented technology

The invention discloses a concrete surface carbonization-resistant nano paint which comprises a component A and a component B. The component A comprises the following ingredients in parts by weight: 50-60 parts of bisphenol A resin, 20-30 parts of dispersing agent and 20-30 parts of nano silicon dioxide. The component B comprises the following ingredients in parts by weight: 10-12 parts of polyamine curing agent, 25-30 parts of water, 12-15 parts of precipitated barium sulfate, 15-18 parts of wax powder, 18-20 parts of titanium white, 2-5 parts of defoaming agent and 2-5 parts of wetting agent. The invention also discloses a technique for preparing the concrete surface carbonization-resistant nano paint. The nano paint can be widely used on the surfaces of buildings, bridges, tunnels, dams, breast walls and other concrete structures. A compact and hard protective layer is formed on the concrete surface to perform favorable isolation functions on carbon dioxide, oxygen and other components in air, thereby achieving the effect of concrete surface carbonization resistance. Meanwhile, the paint has favorable weather resistance and pollution resistance.

A device is described for facilitating the preparation of therapeutic foam e.g. for the treatment of varicose veins. A pressurised vial contains a sclerosant liquid, e.g., polidocanol solution, and a sterile gas which is readily absorbed by the body, e.g., carbon dioxide, oxygen or a mixture of these gases. The vial is provided either with a specialised stopper / seal into which a syringe nozzle may be inserted or alternatively a septum seal which may be penetrated by a hypodermic needle. The quantities of gas and liquid and the pressure in the vial are pre-set so that, on connection of a syringe to the vial, a predetermined volume of both gas and liquid is transferred to the syringe, with the intention that the syringe is then used to make a foam by known means. The use of the vial ensures that the ratio of gas to liquid in the foam is standardised, and also provides a convenient way of packaging the gas and liquid and of filling the syringe in a sterile manner.

The invention relates to the field of food fresh-keeping materials, and discloses a plastic fresh-keeping film for packaging kiwi fruits and a preparation method. The preparation method comprises thefollowing steps of (1) using an ethyl alcohol solution to wash polymethyl methacrylate microspheres, putting into a mixed solution of hydrogen peroxide and sulfuric acid, heating, adding into a polyvinylidene chloride emulsion, and stirring, so as to obtain a composite emulsion, wherein the raw materials comprise 10 to 20% of polymethyl methacrylate microspheres, 25 to 30% of polyvinylidene chloride, 1 to 2% of emulsifier, and 48 to 64% of water; (2) performing corona treatment on a nonwoven cloth, uniformly coating the composite emulsion, and drying; (3) using a laser device to radiate the coating layer of the non-woven cloth, so as to obtain the plastic fresh-keeping film. Compared with the traditional fresh-keeping film, the prepared plastic fresh-keeping film has the advantages that the permeation rate of carbon dioxide / oxygen is high, the concentration of carbon dioxide is low, the low-oxygen environment is well maintained, the atmosphere control effect is obvious, and the warranty period of the kiwi fruit is effectively prolonged; the preparation process is simple, the energy consumption is low, the cost is low, and the application prospect is broad.

A system is configured to perform capnometry / capnography, and / or other compositional analysis on a non-invasively ventilated subject. As such, the system determines amounts of a molecular species of gas (e.g., carbon dioxide, oxygen, etc.) excreted by the subject on a per-breath basis. Determinations of amounts of the molecular species of gas excreted are adjusted to reflect amounts of the molecular species of gas leaked from the non-invasive interface used to communicate with the airway of the subject.