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Bactericidal method and apparatus.

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To kill bacteria in an aqueous liquid, especially an oil-water emulsion which is used as a coolant and lubricant for machine tools, an apparatus is set up comprising means for inflicting damage to the cell walls of the bacteria in association with a source providing heavy metal ions arranged to expose the bacteria to such ions substantially immediately after the damage is inflicted. The preferred form of the invention is a gear pump in which at least the gear wheels are silver-plated.

Bactericidal nano-silver cloth and its making process and use.

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Nano scale silver bactericidal cloth, its making method and use, it is characterized in that the external surface of base cloth is sputtered with a layer of metallic silver film, its method includes putting solid metallic silver column in vacuum chamber, sending base cloth into the vacuum chamber, the vacuum degree of the vacuum chamber is 5X10 to the power minus five to 9X10 to the power -5 torr, introduce argon gas to make the vacuum degree of vacuum chamber maintaining 7X10 to the power -4 to 9 times 10 to the power -4 torr, switch on D.C-power and sputter for 1-2 min, the moving speed of base cloth is 1-3 m./min, after all the base cloth is moved, continue sputter for 1-2 min., the nano scale silver bactericidal cloth is produced.

Bactericidal protective milky lotion.

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To provide a bactericidal protective milky lotion having affinity for a human body, used as a liquid milky lotion harmless to cells, given by mixing an auxiliary agent, such as a flavoring agent, a cleansing agent, and a cosmetic pharmaceutical, thereinto during production processes, formed into a milky lotion shape or a paste shape, capable of being used in coating and spraying manners as healthy and hygienic goods, including a hand wash milky lotion, a cosmetic, a shampoo, and a bactericidal protective liquid, penetrating into pores of the skin, having characteristics of removing many kinds of viruses brought about by reaction mechanism of oxidation and reduction of a photocatalyst (TiO2) and aphotic irradiation of nanometer silver, and therefore having functions of sterilization for a long period and natural removal of a bacterial film. This bactericidal protective milky lotion is produced by mixing bactericidal materials, such as the nanometer-level photocatalyst (TiO2) and nanometer silver, by a sol-gel method or other production methods, and forming the materials into a homogeneous liquid composite solution of a nanometer suspension having of a particle size of <=50 nm, wherein the milky lotion is subjected to dispersion, suspension, and pH regulation (so as to have a pH of about 6 to 8).

Bactericidal reaction product of silver salt.

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Bactericidal resin.

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To obtain the subject resin capable of eluting a very small amount of a metal ion for a long period of time by bounding a polyamine to a germicidal metal ion through a methylenecarboxyl group and/or ethylenecarboxyl group in a polycondensate of the polyamine and a polyepoxy compound. Methylenecarboxyl group and/or ethylenecarboxyl group in a content of 0.1-15wt.% based on a polymer is introduced to at least a part of nitrogen atoms in a polyamine in a polycondensate of the polyamine and a polyepoxy compound. A germicidal metal ion such as copper or silver is bonded to the methylenecarboxyl group and/or ethylenecarboxyl group.

Bactericidal shoes.

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To give shoes a long-term bactericidal effect by applying in it inside a bactericidal layer made from either copper fiber, silver fiber or mixture of copper and silver fiber. Inside of the bactericidal shoe is applied a sheet type bactericidal layer covering the inner surface of an in-sole up to a toe of a shoe body.. The bactericidal layer made of one or several layer(s) of the sheet(s) interwoven longways and sideways with extreme thin copper fiber is fixed to the inside of the in-sole up to the upper top of the toe turned on the front using several snaps. A porous shield layer is glued onto the upper surface of the bactericidal layer. Such a shield layer made of a sheet interwoven with moisture absorbent cotton or synthetic resin threads having a number of air holes is to protect the bactericidal layer with its effective moisture and shock absorbability. Copper elements contained in the bactericidal layer is to give high efficiency anti-bacteria, bactericidal and anti-fungi effects to the inside of the shoe body..

Bactericidal silicon dioxide doped with silver

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Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filter.

Bactericidal silicon dioxide doped with silver.

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Pyrogenically prepared silica doped with silver or silver oxide is prepared by feeding an aerosol into a flame such as is used for the preparation of pyrogenic silica, mixing the aerosol homogeneously with gas mixture before the reaction, then allowing the aerosol/gas mixture to react in a flame. The resulting pyrogenic silicas doped with silver or silver oxide are separated from the gas stream. The pyrogenic silica doped with silver or silver oxide by means of an aerosol can be used as a bactericidal filter.

Bactericidal sterilization by strong base natural hot spring water and silver ion water for cleaning fluid product manufacturing apparatus or the like.

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To provide a safe and secure natural material excellent in sanitation, which can simplify a working process and reduce the purchase cost of an alkaline cleaner by easily cleaning a milking machine with strong base natural hot spring water whose characteristics of alkaline nature are made use of to decompose milk protein and milk fat, and which does not require neutralization by an acidic component, and which is sterilized with silver ion water before beginning to use the milk machine. The strong base natural hot spring water easily decomposes the milk protein and the milk fat which tend to contaminate a system and washes the system by dissolving caked protein components or the like. Thereafter, sterilization is carried out with the silver ion water which is most excellent in bactericidal sterilization effect whenever the milking machine is used. Thus, the hot spring water is utilized for safe and secure sterilization.

Bactericidal treating agent.

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To provide the title agent capable of quickly performing bactericidal actions for the circulating water for air-conditioning and for cooling industrial machinery, aqueous solutions of e.g. water-soluble lubricants for metal processing, highly water-absorbable resins for paper diapers, etc. comprising monovalent silver ion-contg. glass fiber. A monovalent silver ion-contg. compound (e.g. AgNO3) is added to Na2O, SiO2, B2O3, Al2O3, CaO, MgO, etc., as raw material components for glass, and short fibers 0.5-8µm in mean diameter or filamentous fibers 8-200mum in mean diameter is produced. This kind of glass fibers itself or a form of woven or nonwoven fabric therefrom can be used as the objective bactericidal treating agent. To use the present treating agent in water treatment equipment, it may only to be packed in a box provided on the way of the running channel for a fluid to be treated, and because of large area of contact of the glass fibers with said fluid, the Ag<+> will be readily dissolved off the glass fibers into the fluid, and only such a portion as to be subject to the propagation of microorganisms on the interface between the equipment and water can be sterilized effectively.

Bactericide (modifications) and a method for preparing mixture of Di- and trivalent silver oxides for bactericides.

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Inorganic biocides. invention relates to silver-based inorganic bactericides and to electrolytic method for preparing mixture of di- and trivalent silver oxides, which are active substances for bactericides and can be used for bactericidal treatment of water in medicine and as components of drugs containing inorganic active ingredients, in particular silver and compounds thereof. First bactericide modification contains, 0,24x10-5-2,4 wt % of mixture of di- and trivalent silver oxides (active principle) in solid state, 1,2x10-5-12.0 wt % of 85% aqueous phosphoric acid, and water, the rest. Second bactericide modification contains additionally from 0.08 to 84.0 wt % of borax. Third bactericide modification is composed as the first one, in which water is replaced by polyethylene oxide and forms gel. The essence of proposed preparation method consists in electrolysis with silver electrodes conducted without reverse of polarity of silver electrodes. After achievement of potential 1,23 V on silver anode, 0.5-5.0 wt % of phosphoric acid modifier is added to form, in interelectrode space, mixture of di- and trivalent silver oxides, after which this solid mixture is separated from electrolytic solution, separated fractions being self- contained disinfecting agents. enabled preparation of stable bactericide forms due to increased reactivity of silver ions caused by increased degree of oxidation thereof and associated additional stabilization by phosphoric acid anions.

Bactericide and bacterial anti-adhesive properties of the nanocrystalline diamond surface.

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DIAM Reports a systematic study of the bactericide and bacterial anti-adhesive properties of nanocrystalline diamond (NCD) and microcrystalline diamond (MCD) in comparison to other important industrial materials, such as copper, silver, polyethylene (Poly), and stainless steel (SS). The data show that NCD has better bactericide and bacterial anti-adhesive activity than Ag, but not as good as Cu. MCD, on the other hand, does not appear to have significant anti-bacterial activity. The superlative properties of NCD, such as mechanical hardness, resistance to oxidation and corrosion, and biological compatibility with blood and tissue, enable its use as antibacterial coating for medical implants. This is an application that cannot be achieved by Cu, which is known to be a highly effective antibacterial material but is not biocompatible. We also discuss possible underlying mechanisms to help understand the bactericide and bacterial anti-adhesive properties of the NCD surface.

Bactericide for bacteria living in environmental water and bactericidal method.

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To provide a bactericide and a bactericidal method for stably sterilizing harmful bacteria in environmental water including legionella bacteria without spending running cost including the energy cost. The bactericide for bacteria living in environmental water comprises a ceramic from which the elution of a silver ion and at least two kinds of metal ions other than silver (provided that combinations of silver, zinc and calcium ions and of silver, zinc, calcium and manganese ions are excluded) into the treated liquid can be recognized.

Bactericide glasses developed by Na+/Ag+ ionic exchange.

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The action of bacteria and fungi in residential, industrial and hospital environments offers high risk to human health. In this context, the development and use of antimicrobial materials has been an efficient method of handling risk situations. This work presents preliminary results of powdered glass showing bactericidal effect obtained by ionic exchange between sodium ions, present in the glass composition, and silver ions, present in the ionic exchange medium. Powdered glass was submitted to ionic exchange in an ionic medium containing different concentrations of silver species. The bactericide effect was dependent on AgNO3 concentration in the ionic medium. The Agar Diffusion Test on Escherichia coli bacteria, EDS and ICP-MS analyses were applied to the samples; the results showed that a critical concentration of silver ions incorporated into the powdered glass occurred and a limit to the bactericide effect. Tests and analyses revealed that 6 wt.% of AgNO3 in the ionic medium was the critical concentration.

Bacteriological effluent treatment of chromium containing streams

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Anaerobic treatment with US registered mutant strain of Shewanella alga culture when Cr precipitate is formed.