The present invention relates to a particle therapy apparatus used for radiation therapy. More particularly, this invention relates to a gantry for delivering particle beams which comprises means to analyse the incoming beam. Means are integrated into the gantry to limit the momentum spread of the beam and/or the emittance of the beam.

Gantry comprising beam analyser for use in particle therapy

An example synchrocyclotron includes the following: a voltage source to provide a radio frequency (RF) voltage to a cavity to accelerate particles from a particle source; a coil to receive a variable electrical current and to generate a magnetic field that is at least 4 Tesla to cause the particles to move orbitally within the cavity; and an extraction channel to receive the accelerated particles and to output the received particles from the cavity. The particles that are output from the cavity have an energy that is variable based at least on the variable electrical current applied to the coil.

Particle accelerator that produces charged particles having variable energies

The invention relates to a method for preparing modified nano montmorillonite, characterized by using an intercalation/coupling secondary modification technique, using an acid composite intercalation solution as a dispersing agent, dispersing montmorillonite through using the salvation of the intercalating agent solution, then adding a certain amount of a titanate coupling agent dropwisely in the montmorillonite for surface modification, then modifying the montmorillonite by secondary intercalation through using acrylate monomers, and further dispersing the nano montmorillonite through initiating the polymerization of the acrylate monomers between the montmorillonite layers to obtain the modified nano montmorillonite finally The modified nano montmorillonite can effectively increase the thermal stability of polrvinyl chloride (PVC)

Method for preparing modified nano montmorillonite

The invention relates to an improved topical pharmaceutical composition for burn treatment and microbial infections on human beings or animals. The pharmaceutical composition comprises 0.1% w/w to 1% w/w of an antimicrobial drug, i.e., silver sulfadiazine and 0.2% w/w antiseptic, i.e., chlorhexidine gluconate; wherein silver sulfadiazine is in nanonized form.

Topical pharmaceutical composition comprising nanonized silver sulfadiazine and chlorhexidine gluconate

This invention is a polymer/montmorillonite-garlicin nanometer antibiosis composite. Its raw materials and weight amount is that polymer 100, montmorillonite-garlicin 0.1-10, disperse medium 0-400, cross linking agent, accelerator 0-1. The polymer is composed by silicone rubber gum which is chosen from methylsilicone, pyro-methylsilicone and additive type methylsilicone, polyurethane which is chosen from PE, PVC and PP, or the polymer of two compounds. The functional intercalator of montmorillonite-garlicin is garlicin. The invention slows down the release of garlicin, so it can extend its antibiosis function outstandingly with its good slow-release nature. Except the preparation of high performance montmorillonite-garlicin materials, it can also boost the mechanic function, heat resistance, mediator resistance of the polymer basal body.

Polymer/montmorillonite-gallicin nano-antibacterial composite material and its preparation method

The invention discloses a nanometer antibiotic composite material of polymer/montmorillonite-soya bean lecithin-silvadene, which comprises the following parts: 100g polymer, 01-10g montmorillonite-soya bean lecithin-silvadene composition, 0-400g dispersing dielectric, 0-10g crosslinking agent and 0-1g accelerant, wherein the polymer is composed of raw rubber of silicon rubber, polyurethane or two copolymer or polyolefin material; the raw rubber of silicon rubber is selected from indoor-temperature silicon rubber, high-temperature silicon rubber, addition-typed silicon rubber; the polyolefin material can be PE, PVC, PP; the ion exchange content of montmorillonite is 70-120mmol/100g

Polymer/ montorillonite clay- organosilicon antibacterial agent -sulfadiazine silver nano antibacterial composite material and preparation method thereof

The method for synthesizing high-hydroscopicity resin by utilizing waste and old rubber powder includes the following steps: using mixed solvent to make rubber powder swollen, adding dispersing agent, stirring them, adding activating agent and emulsifying agent; using alkaline solution to partially neutralize acrylic acid, mixing the above-mentioned two systems; shearing; adding initiator, dispersing agent and cross-linking agent, shearing and emulsifying, protective atmosphere reacting so as to make the above-mentioned material into uniform solid, drying to obtain the invented high-hydroscopicity resin.

Method for synthesizing high water absorption resin from rubber powder

The invention relates to a PVC montmorillonite/rare-earth stabilizing agent and a preparation method thereof, wherein, weight part components of the stabilizing agent comprise 100 of montmorillonite, 1 to 40 of organic rare-earth salts, 200 to 500 of dispersive medium, 1 to 10 of surface modifying agent, and 10 to 50 of auxiliary stabilizing agent. The organic rare-earth salts are prepared by organification of lanthanides inorganic rare-earth salt and long chain fatty acid. The long chain fatty acid is epoxy oleic acid, stearic acid, lauric acid or citric acid, taking up 5 percent to 40 percent of gross mass of the organic rare-earth salt. The long chain fatty acid takes up 20 percent to 40 percent of gross mass of the organic rare-earth salt. The invention overcomes defects of soft quality of traditional stabilizing agent and weak absorption ability of ultraviolet radiation and is provided with fine stripping performance and high reinforcing ability, and can effectively improve anti-attacking performance of PVC compound materials, realizes fine annealing strengthening and strengthening effects of nanometer padding and is provided fine barrier function to ultraviolet irradiation. The invention is suitable to PVC materials requiring high material mechanical strength.

Montmorillonite/rare-earth stabilizer for PVC and preparation method thereof

The invention discloses a nanometer antibiotic composite material of polymer/montmorillonite-soya bean lecithin-silvadene, which comprises the following parts: 100g polymer, 0.1-10g montmorillonite-soya bean lecithin-silvadene composition, 0-400g dispersing dielectric, 0-10g crosslinking agent and 0-1g accelerant, wherein the polymer is composed of raw rubber of silicon rubber, polyurethane or two copolymer or polyolefin material; the raw rubber of silicon rubber is selected from indoor-temperature silicon rubber, high-temperature silicon rubber, addition-typed silicon rubber; the polyolefin material can be PE, PVC, PP. The invention improves stretching strength by 370%, which increases fracture extending rate by 480%.

Jian Shen

Papers

Polymer/montmorillonite-gallicin nano-antibacterial composite material and its preparation method

Polymer/ montorillonite clay- organosilicon antibacterial agent -sulfadiazine silver nano antibacterial composite material and preparation method thereof

Method for synthesizing high water absorption resin from rubber powder

Montmorillonite/rare-earth stabilizer for PVC and preparation method thereof

Polymer/ montorillonite clay- soy bean lecithin-sulfadiazine silver nano antibacterial composite material and preparation method thereof