摘要:
A methane fermentation process wherein a strain of the genus Methanobacterium is cultivated in a fermenter containing at least a carbon source, a nitrogen source, inorganic salts and micro-flora for methane fermentation. The strain has a methanogenic activity above 8.7.times.10.sup.-8 ml/cell.day in the stationary phase of growth, exhibits the methanogenic activity even at an oxygen partial pressure of 1/30 atm. and is allowed to live under an oxygen partial pressure up to 1/5 atm. The seed of the strain is obtained by anaerobically cultivating the strain in a culture medium containing at least nitrogen sources, inorganic salts and reducing agents in a mesophilic range of 25.degree. to 45.degree. C. using a substrate such as a mixed gas of hydrogen and carbon dioxide, a formate or an acetate. The growth of the strain is facilitated when cocultured with a strain belonging to the genus Clostridium.
摘要:
Two pipe-construction houses of a shed-roofed type, facing each other at their ridge sides with a gap provided between the ridges, are coupled with girders to make an integrated construction. The sides are covered with rollable ventilative sheets, and its roof is made of a soft plastic film span on a pipe-construction roof frame above a hard plastic sheet spread along the central part in the longitudinal direction of the roof. Cultivation beds of rust-prevention-coated thin steel sheet are hung on bed bearing fittings of a pipe structure. Nutrient solution is fed by an air lift pump under control by electric conductance thereof.
摘要:
An antibacterial and antifungal composition which comprises an antibacterial and antifungal material carried on a porous particle carrier is provided. Preferably, the porous particle carrier is a silica gel particle. The antibacterial and antifungal material is at least one metal complex salt, and can contain plant extracts and the like in addition to the metal complex salt. At least a portion of the surface of the above-mentioned carrier having the antibacterial and antifungal composition can be coated with a coating material.
摘要:
A composite plating coating includes a metal plating coating which is dispersed with an antibacterial and antifungal composition and/or a fragrant composition. Particularly, by dispersing carriers absorbed with an antibacterial and antifungal composition and a fragrant composition in a metal plating coating, a composite plating coating with an antibacterial and antifungal effect and a fragrance effect can be obtained.
摘要:
The present invention provides a humidifier capable of removing microorganisms without using electric power. The humidifier includes a reservoir; a humidification system including a humidification filter arranged such that at least part thereof is immersed in water and a blowing means for discharging air through the humidification filter; and a microorganism remover including a first electrode and a second electrode having different electric potentials and opposing to each other to have a space therebetween and a short circuit part for causing a short circuit between the first and second electrodes. The first electrode is higher than the second electrode in electric potential and at least the first and second electrodes are arranged in contact with water in the reservoir.
摘要:
A pest repellent paint contains at least one extract selected from the group consisting of an extract of a whole plant which belongs to a wintergreen family (Pyrolaceae), an extract of a whole plant which belongs to a nasturtium family (Tropaaeolaceae), an extract of branches and leaves of a plant which belongs to a myrtle family (Myrtaceae), and an extract of a whole plant which belongs to a primrose family (Primulaceae); at least one paint resin selected from the group consisting of polyvinyl alcohol, carboxymethylcellulose, epoxy resin, urethane resin, and polyester resin; and a paint solvent.
摘要:
An antiviral composition comprising: a thiosulfate salt and at least one of thiosulfate complex salt of a metal and a porous particulate carrier; said metal being at least one selected from the group consisting of silver, copper and zinc; said salts being carried on said porous particulate carrier. It is applicable to a wide range of living environment such as medical instruments and appliances, hygienic implements as well as kitchen utensils, and also demonstrates an antibacterial activity in addition to the antiviral activity. The composition releases its salts slowly to the environment and the antiviral and antibacterial activities of said composition lasts for a long period of time. A method for preparing said composition as well as an antiviral disinfection method and a virucidal disinfection fluid using said composition are also disclosed.
摘要:
Insects come into lighting fixtures, and enormous efforts are expended to clean the interior of a glove. Here is provided a repellent paint, which prevents this effect.The repellent paint is characterized in that it has at least cyclopropane carboxylate as a repellent ingredient, and comprises at least a porous carrier particle of an inorganic oxide, a surfactant, a paint binder and a solvent.
摘要:
A coating-type antimicrobial composition contains at least a water extract of a plant body and a paint resin and/or a coating solvent. The plant body is, e.g., genus Eucalyptus, genus Kaemferia, genus Isodon, genus Scutellaria, genus Usnea, genus Pistacia, and genus Senecio.
摘要:
Insects come into lighting fixtures, and enormous efforts are expended to clean the interior of an enclosure. There is provided a repellent paint, which prevents this and has a prolonged repellent effect. The repellent paint is characterized in that it has at least cyclopropane carboxylate as a repellent ingredient, and comprises at least a porous carrier particle of an inorganic oxide, a surfactant, a paint binder and a solvent.