Abstract:
Waste water is subjected to electrolysis in an electrolytic cell having an anode comprising an insoluble central electrode and a body of particulate iron pieces disposed therearound and in electrical contact therewith, whereby impurities in the waste water become occluded within a floc of iron hydroxide formed by electrolytic dissolution of the iron pieces, and the floc containing the impurities is subjected to oxidation processing and is thereafter separated. A magnetic field can be applied to the waste water thus treated thereby to promote sedimentation of the floc.
Abstract:
An ammonia gas to be determined, and an oxidative gas containing nitrogen oxides in moles more than those of the ammonia are brought into contact with an analytical catalyst capable of forming nitrogen and water from ammonia and nitrogen oxides.Concentrations of nitrogen oxides of the gas before and after the contact with the analytical catalyst are determined, and an ammonia concentration of the gas is determined by converting the difference between the concentrations of nitrogen oxides to the ammonia concentration by calculation.
Abstract:
A process for production of acrylic acid by vapor phase catalytic oxidation of acrolein comprising effecting the catalytic oxidation in the presence of a catalyst comprising1. oxides of molybdenum2. oxides of niobium3. oxides of silicon, and4. oxides of elements selected from the group consisting of copper, zinc, titanium, manganese, tungsten, iron, cobalt, nickel, cadmium, gallium, mercury, thorium and boron.
Abstract:
An image forming apparatus includes a receiver to receive image information from an external device, a movable intermediate transfer member, a plurality of latent image bearing members on which a latent image is formed based on the image information, a plurality of developing devices, each of which disposed in proximity to the latent image baring member, to develop the latent image on the latent image bearing member with toner to form a toner image thereon, a transfer bias application mechanism to apply a transfer bias to the intermediate transfer member and halt temporarily and periodically application of the transfer bias in a continuous output mode in which a plurality of images are continuously formed on different recording media sheets based on the image information of the plurality of images received continuously by the receiver, and a secondary transfer member to transfer the superimposed toner image onto a recording medium.
Abstract:
A belt unit is detachably attached to a housing. A holder changes a state of an endless belt by moving a transfer roller between a first state as an endless belt movement state and a second state as a detachment state. The first state allows the endless belt to circulate for image formation, and the second state allows the belt unit to be detached from the housing. The holder moves the transfer roller adjacent supporter independently of the transfer roller and lifts the opening in the endless belt to a prescribed position to expose it to the front side plate.
Abstract:
A nonvolatile semiconductor memory includes: a memory cell unit including a plurality of memory cells having an electric charge accumulation layer and a control electrode, said memory cells being electrically connected in series; a plurality of word lines, each of which is electrically connected to said control electrode of said plurality of memory cells; a source line electrically connected to said memory cells at one end of said memory cell unit; a bit line electrically connected to said memory cells at the other end of said memory cell unit; and a control signal generation circuit, which during a data readout operation staggers a timing for selecting the word line connected to said memory cells of said memory cell unit from a timing for selecting a non-selected word line connected to a non-selected memory.
Abstract:
A semiconductor memory write method which, when writing data at a threshold voltage level in a memory cell, is configured to perform two write operations including a preliminary data write operation of writing temporary data at a threshold voltage level lower than that of the data at the threshold voltage level, and a final data write operation of additionally writing final data at the threshold voltage level, includes making at least one of a write time of the preliminary data write operation, a word-line waiting time of verify read, and a bit-line waiting time of verify read, shorter than that of the final data write operation.
Abstract:
A nonvolatile semiconductor memory includes: a memory cell unit including a plurality of memory cells having an electric charge accumulation layer and a control electrode, said memory cells being electrically connected in series; a plurality of word lines, each of which is electrically connected to said control electrode of said plurality of memory cells; a source line electrically connected to said memory cells at one end of said memory cell unit; a bit line electrically connected to said memory cells at the other end of said memory cell unit; and a control signal generation circuit, which during a data readout operation staggers a timing for selecting the word line connected to said memory cells of said memory cell unit from a timing for selecting a non-selected word line connected to a non-selected memory.
Abstract:
A motor shaft puts through a motor casing and a gear casing which are detachably connected to each other. In the motor casing, a rotor is fixed to the motor shaft, while a stator is fixed on the inner circumferential surface of the motor casing. The motor shaft has a worm which engages with a worm wheel in the gear casing. A collar in which the motor shaft is pressingly fitted is provided in the middle of the motor shaft at the end of the gear casing. The motor shaft is supported at each end of the worm in the gear casing.
Abstract:
In a capacitor-containing semiconductor integrated circuit, a portion in which a plurality of capacitors are serially connected together is arranged so that at least part of the capacitors is formed as a well capacitor.