摘要:
A reducing water purification material having a reducing iron-based precipitate selected from green rust, iron ferrite, reducing iron hydroxide, and a mixture thereof. A wastewater treatment process having steps of adding a reducing iron compound to wastewater, leading the wastewater to which the reducing iron compound is added to a reaction tank and forming a precipitate, separating the formed precipitate by a solid-liquid separation to obtain a sludge, and alkalinizing all or a portion of the separated sludge to form an alkaline sludge followed by returning to the reaction tank, wherein in the precipitation step, the wastewater to which the reducing iron compound is added and the alkaline sludge are mixed and are allowed to react in a non-oxidizing atmosphere under alkaline condition to form a reducing iron compound precipitate as the precipitate, thereby incorporating contaminants in the precipitate to remove the contaminants from the wastewater.
摘要:
A small vehicle features a drive system that directs power from an engine unit to at least one driven wheel. The driven wheel is connected to a half shaft. The half shaft is driven by a ring gear. The ring gear is driven by a pinion gear. The pinion gear is connected to a longitudinally extending drive shaft. The pinion gear is axially adjustable along the rotational axis of the drive shaft relative to the ring gear. The pinion gear is not substantially axially adjustable relative to a cover member the partially defines a gear housing. The cover member is adjustably secured to the balance of the gear housing through a shim. The shim can be exchanged for varied shim sizes to effect proper meshing between the pinion gear and the ring gear.
摘要:
An aberration measuring apparatus has a converging lens L disposed on the light path of light beam to converge light beam traveling through a measurement target optical system PL on a predetermined surface IP, an aperture stop AP disposed on the light path of light beam to transmit a part of the light beams, a converging position detection unit DET disposed on the predetermined surface to detect a positional deviation of a converging position P of a part of the light beams traveling through the aperture stop on the predetermined surface IP, a moving unit M connected the aperture stop to move the aperture stop within the light beam, and an arithmetic processing unit connected the converging position detection unit to calculate an aberration of the measurement target optical system PL on the basis of an output signal from the converging position detection unit DET.
摘要:
A snowmobile having a lightweight fabricated frame assembly. The frame assembly includes a number of reinforcing elements, some of which comprise heat exchangers for the liquid cooling system of the engine, so as to provide high rigidity and light weight. The engine of the snowmobile is provided with an exhaust system that permits a relatively short effective length, but minimizes pulse-back effects by forming internal expansion chambers around the exhaust branch pipes. The drive for the snowmobile includes a reversing transmission and a brake assembly associated therewith in addition to a main brake assembly for the snowmobile. Furthermore, there is provided a parking brake assembly that is easy to operate and which will provide the operator with a visual and physical warning of its condition so that the operator will not attempt to operate the snowmobile with the parking brake engaged.
摘要:
A digital receive signal is sampled by an A/D converter, and the position of a point at which the receive signal crosses a reference level is obtained in response to sampling data by an exclusive OR gate. A phase interval between the present sampling point and the point at which the receive signal crosses the reference level is obtained by an arithmetic circuit, and the phase of the present sampling point is obtained in accordance with the position of the crossing point, the phase interval P between the present sampling point and the crossing point obtained by arithmetic circuit, the phase of a preceding sampling point obtained by an I-bit parallel delay circuit, and the phase of a sampling point which is two points preceding to the present sampling point and obtained by an I-bit j-stage parallel delay circuit. A data detection clock signal and digital data are detected in accordance with the computed phase of each sampling point, an MSB of sampling data, and the phase interval between the present sampling point and the point at which the receive signal crosses the reference level.
摘要:
A water swellable resin composition comprises a water swellable resin and a medium such as a plasticizer, solvent, resin or resin solution. The resin is an alkali metal salt and/or hydrophilic amine salt of a copolymer of hydrophobic polymer chains having an .alpha.,.beta.-ethylenically-unsaturated group at end thereof and a monomer composed principally of (meth)acrylic acid.
摘要:
A fuel pump including a housing; a motor section provided in the housing which motor section includes an armature and a magnet opposed to the armature with a substantially annular space defined therebetween as a fuel passage, which armature includes a core formed by stacking a plurality of plates and a coil wound around the core; a pump section fixed to a lower end of the housing and connected to the motor section to be driven thereby; a fuel inlet formed in the pump section for sucking a fuel by driving the motor section; a fuel outlet formed at an upper end of the fuel pump for discharging the fuel fed from the fuel inlet through the fuel passage; and a first resin portion impregnated in the core and the coil for suppressing vibration of the armature. The fuel pump having the above construction preferably further includes a second resin portion coated on a surface of at least the first resin portion, which second resin portion has a resistance against the fuel and no influence upon the fuel.
摘要:
A rotary type electrostatic spray painting device including a rotary shaft driven by an air turbine. A reflecting face portion and a non-reflecting face portion are formed on the rear end face of the rotary shaft. A rotating speed sensor is arranged adjacent to the rear end face of the rotary shaft to detect the rotating speed of the rotary shaft from light reflected from the reflecting face portion. The amount of pressurized air fed into the air turbine is controlled in response to the output signal of the rotating speed sensor so that the rotating speed of the rotary shaft becomes equal to a desired rotating speed.
摘要:
There is provided a new pigment composition composed of a pigment and a dispersant wherein the dispersant is a phosphoric ester compound represented by the formula below. ##STR1## (where one or more than one of the three R's are residues of a hydroxy-carboxylic acid and/or hydroxy ester thereof; and one or two of the three R's, in case of being remained, are hydrogen atoms, cations, or residues of an alcohol excluding the above-mentioned residues.)
摘要:
A hydrophilic polymer comprises a main component of a block copolymer and/or a graft copolymer which has at least one hydrophobic hard segment-hydrophilic segment-hydrophobic hard segment unit wherein said hydrophobic hard segment is a binding phase segment having an average molecular weight of more than 1,000 and said hydrophilic segment is a segment having a hydrophilic group connected to thioether bond on a side chain and having an average molecular weight of more than 1,000.