摘要:
In a camera blade drive device that includes a base plate 10 that has an aperture 10a forming an optical path, a blade member 20 that is supported by the base plate 10 and opens or closes the aperture 10a, and a driving ring 30 provided to rotate relative to the base plate 10, and is configured to operate the blade member 20 that is linked to the rotating driving ring 30, a permanent magnet 31 is provided on the driving ring 30, and a coil 11 that rotates the driving ring 30 by magnetic force generated when the coil 11 conducting as well as a magnetic member 12 that holds the driving ring 30 in a predetermined position by magnetic attraction with the permanent magnet 31 when the coil 11 is non-conducting are provided on the base plate 10.
摘要:
The present invention relates to a process for the production of a biguanide derivative useful as an intermediate for triazine-type herbicides, in which the biguanide derivative can be produced at high yields by reacting a phenoxyalkylamine salt with dicyandiamide in a solvent containing a paraffinic hydrocarbon having 8 to 15 carbon atoms, or by reacting a free phenoxylakylamine with a hydrogen halide in a solvent containing a paraffinic hydrocarbon having 8 to 15 carbon atoms and reacting the resultant a phenoxyalkylamine salt with dicyandiamide in the same solvent without isolating the phenoxyalkylamine salt.
摘要:
A camera blade drive device includes a base plate 10 that has an aperture 10a forming an optical path, a blade member 20 that is supported by the base plate 10 and opens or closes the aperture 10a, and a driving ring 30 provided to rotate relative to the base plate 10. The camera blade drive is configured to operate the blade member 20 that is linked to the rotating driving ring 30. A permanent magnet 31 is provided on the driving ring 30 and a coil 11 rotates the driving ring 30 by magnetic force generated when the coil 11 is conducting. A magnetic member 12 holds the driving ring 30 in a predetermined position by magnetic attraction with the permanent magnet 31 when the coil 11 is non-conducting.
摘要:
A triazine compound of the formula ##STR1## wherein Y.sup.1 is a hydrogen atom or a methyl group and Z is an oxygen atom or a sulfur atom, X.sup.1 is a halogen atom and R is a hydrogen atom, a methyl group or an ethyl group. The triazine compound is useful as a herbicide for combatting weeds.
摘要:
The present invention relates to a novel triazine derivative represented by the general formula ##STR1## in the formula, A denotes ##STR2## (in which Y.sup.1 denotes a hydrogen atom or a methyl group and Z denotes an oxygen atom or a sulfur atom), ##STR3## (in which Y.sup.2 and Y.sup.3, which can be of the same kind or different kinds, each denote a methyl group or a methoxy group) or ##STR4## (in which Y.sup.4 denotes a methyl group, trifluoromethyl group, methoxy group or fluorine atom and n denotes an integer of 0 ro 2), X.sup.1 denotes a halogen atom and R.sup.1 denotes hydrogen, a methyl group or an ethyl group as well as a herbicide containing the triazine derivative represented by the general formula (I) as an effective ingredient.
摘要:
Imidazoline derivatives represented by the general formula: ##STR1## (wherein all the symbols are as defined in appended claims), a process for preparation of said derivatives, and a herbicide or a plant growth regulator containing said derivative as an active component are described. These derivatives are novel compounds, and the herbicide containing said derivative as an active component exhibits excellent herbicidal activity against various weeds without phytotoxicity on useful agricultural products. The plant growth regulator containing said derivatives as an active component exhibits excellent growth regulating activity against turf etc. without phytotoxicity thereon.