摘要:
A vermin exterminating element comprising a culture carrier having culture medium components containing vermin infectious microorganisms and/or the spores of the vermin infectious microorganisms cultivated therein, and a vermin exterminating method using the same.
摘要:
A semi-conductor device in which a semi-conductor element is sealed with a molding resin is disclosed. In the device, adhesion between a semi-conductor chip and the molding resin is achieved mainly by oxygen-crosslinking between silicon in the semi-conductor chip and silicon in the molding resin. The device exhibits excellent moisture-resistant reliability even after mounting.
摘要:
A tape guide for magnetic tape cassettes, comprising a thermosetting resin composition, such as a polyester resin having a glass transition point of not lower than 100.degree. C. containing an inorganic filler such as silicon powder and, optionally, a resin powder such as a tetrafluorethylene resin powder in a proportion of from 60 to 75% by weight based on the total composition. The tape guide has an increased thermal conductivity of 10.times.10.sup.-4 cal/cm.deg.sec or more and a low coefficient of friction and is, therefore, free from undesirable frictional heat generation.
摘要:
A process for removing electrolyte comprising forming a compartment for dealing with a liquid by juxtaposed arrangement of a first barrier across or through which a cation can be exchanged for hydrogen ion and a second barrier across or through which an anion can be exchanged for hydroxyl ion, forming a passage for acid solution outside the first barrier, forming a passage for alkaline solution outside the second barrier and inserting the liquid containing electrolyte into the compartment.
摘要:
A porous polytetrafluoroethylene material produced by forming a mixture of an adequate amount of a liquid lubricant and polytetrafluoroethylene fine powder having an average molecular weight of at least 6,000,000, an amorphous index larger than 0.1 and a number average primary particle size of 0.1 to 0.8 microns, and a clear endothermic peak at a temperature of 347.+-.3.degree. C. and an another endothermic peak or shoulder at a temperature between 330.degree. C. and the temperature of said clear endothermic peak on a crystalline melting chart recorded by a differential scanning calorimeter, removing the lubricant to obtain an unsintered PTFE material and expanding the unsintered polytetrafluoroethylene material at least monoaxially at a temperature higher than the melting point of polytetrafluoroethylene.
摘要:
Apparatus for peeling a protective film off a thin article such as a silicon wafer is disclosed. The film is peeled by sticking an adhesive tape to the protective film on the article and pulling it away from the article. The protective film is peeled by the apparatus only by the adhesive force of the adhesive tape.
摘要:
A process for producing a microcapsule containing a liquid active material is described, comprising the steps of:(1) dissolving in an organic solvent a polymer, esp. a polysulfone and an active material which has a limited solubility of about 0.01 to about 2 parts by weight in 100 parts by weight of said polymer and which is liquid at room temperature, the amount of said liquid active material added being more than the limited solubility and being about 2 to about 250 parts by weight per 100 parts by weight of the polymer and said organic solvent being capable of dissolving the respective components and being more volatile than said active material;(2) atomizing the resulting solution through a nozzle into a gaseous atmosphere to form a mist of tiny liquid droplets; and(3) removing the solvent from the droplets by evaporation so as to provide a microcapsule having the liquid active material confined by the wall of said microcapsule made of the polymer.
摘要:
An optically active hydroxyiodolactone of the formula ##STR1## wherein the stereochemistry of the 3a-, 5- and 7a-positions is either (3aR,5S,7aS) or 3aS,5S,7aR). The compound is useful as an intermediate for the production of a large amount of one component of the queen recognizing pheromone of red imported fire ant with a high optical purity.
摘要:
An apparatus for measuring an optical axis direction in which an intensity of the light transmissive to a specimen to be measured disposed between two polarizers is measured by an orthogonal Nicol optical system which uniaxially comprises a light source, said two polarizers, and a light receptor thereby determining the optical axis direction of the specimen to be measured. The apparatus comprises a conveyor for continuously moving the specimen in an elongated form in the direction intersecting with the orthogonal Nicol optical system at a right angle. An intensity of the transmissive light is measured during the period of time when the specimen is fed from one side of a casing, and removed from the other side of the casing. The casing encases the optical system.
摘要:
An optical fiber coated with a reinforcing material having an excellent heat resistance and a process for producing the same are disclosed. The reinforcing material comprises continuous filaments having impregnated therein a curable composition comprising(a) tri(meth)acrylate of trishydroxylalkyl isocyanurate,(b) a modified phenol novolak-based resin having (meth)acryloyl groups in the molecule, and(c) a polymerization initiator.