摘要:
An aqueous solution containing amino acids of which the solubility in water at isoelectric point is low, can be highly concentrated by means of semipermeable membranes in the presence of a water-soluble organic solvent while increasing the solubility by adjusting a pH.
摘要:
A process for preparing substantially purified aqueous indole solution. In the process of the present invention, crude indole containing an organic impurity is dissolved in an organic solvent which is immiscible with water, the distribution ratio of the impurity to the organic phase, when two-phase liquid system is formed with the organic solvent and an aqueous medium, being greater than that of indole; and the indole solution is contacted with water or an aqueous reaction medium for conducting the reaction to form two-phase liquid system and to distribute indole to the aqueous phase.
摘要:
In an industrial process for preparing indole by reacting aniline and ethylene glycol, high boiling-point impurities and non-volatile substances are removed in advance from the reaction mixture either before the recovery of aniline from the reaction mixture or before the subsequent rectification of the resultant indole. Indole of a high purity can thus be obtained.
摘要:
Enzyme-containing granules are produced by forming drops of a gellable enzyme-containing liquid with a rotating disc and bringing the drops in contact with a gelling solution. The disc is preferably contained in a column, and the gelling solution flows down walls of the column to a reservoir in a lower legion of the column. Drops of the enzyme-containing liquid from the rotating disc contact the gelling solution while flowing down the walls and are carried to the reservoir. Preferably, the enzyme-containing liquid is an aqueous alginate solution containing the enzyme and the gelling solution is an aqueous calcium chloride solution.
摘要:
A process for producing aliphatic polyester wherein a crystallized aliphatic polyester prepolymer formed from an aliphatic dihydric alcohol and an aliphatic dicarboxylic acid and having a weight-average molecular weight of 2,000 to 100,000 is caused to undergo solid-phase polymerization in the presence of a volatile catalyst to make an aliphatic polyester having a weight-average molecular weight of 50,000 to 1,000,000. This process is more efficient than any prior process calling for a complicated step for catalyst removal, since it enables the removal of the catalyst from the reaction system during and/or after solid-phase polymerization. The polyester is comparable in stability to any aliphatic polyester having any catalyst removed therefrom.
摘要:
An information processing apparatus includes a communicating section that executes communication with a server, a local storage section that stores subsequent data acquired from the server, and a data processing section that executes an acquisition process of the subsequent data, and a data playback process using data stored on a disc and the subsequent data stored on the local storage section. The data processing section builds a virtual file system for reading data stored on the disc and the local storage section, at the time of the data playback process, and performs the acquisition process of the subsequent data by transmitting a package ID to the server at the time of the acquisition process of the subsequent data, the package ID being information specifying a package corresponding to a file set necessary for building or updating the virtual file system.
摘要:
Described embodiments receive a signal by a set of fixed taps and a set of floating taps of a receiver, each tap corresponding to a detected symbol. Each of the floating taps is stored in a corresponding shift register to account for process, operating voltage and temperature (PVT) variations of the receiver without calibration of delay elements. Multiplexing logic selects (i) corresponding floating taps for equalization by coupling selected floating taps to the outputs of the fixed taps, and (ii) different phases of each possible floating tap position. The multiplexing logic prunes and/or amalgamates the phases of each possible floating tap position and selects floating taps based on a magnitude of each phase. A combiner adjusts each output value of the fixed taps and the selected floating taps by a corresponding tap-weight, combines the adjusted values into an output signal and subtracts the output signal from the input signal.
摘要:
This electric fan has a rotation shaft that is provided rotatably with respect to a stator, a rotor yoke provided on the rotation shaft and formed in a bottomed cylindrical shape so as to cover the stator from a front surface, and a bracket that fixes the stator to a fan shroud and is formed so as to cover a rear surface of the stator, with a fan body provided so as to integrally rotate with the rotation shaft and the rotor yoke. The fan body has a fan boss formed in a bottomed cylindrical shape so as to cover the rotor yoke from a front surface, and a plurality of blades that is provided protruding radially from an outer circumferential surface of the fan boss. A first labyrinth portion is provided between an opening portion of the fan boss and the fan shroud.
摘要:
A deformable thin object spreading device and method are disclosed. The device includes a control part configured to: control a clamping unit and a moving mechanism to cause the clamping unit to clamp a first point of a deformable thin object; cause an endpoint detecting part to detect a first endpoint; control the clamping unit and the moving mechanism to cause the clamping unit to clamp the first endpoint; cause the endpoint detecting part to detect a second endpoint; control the clamping unit and the moving mechanism to cause the clamping unit to clamp both of the first endpoint and the second endpoint; cause the endpoint detecting part to detect a third endpoint; and control the clamping unit and the moving mechanism to cause the clamping unit to clamp both of the first endpoint or the second endpoint and the third endpoint of the deformable thin object.
摘要:
There is disclosed a method of producing a pre-oxidation fiber in the production of the pre-oxidation fiber by subjecting a polyacrylic precursor fiber to pre-oxidation processing in an oxidizing atmosphere, including shrinking the precursor fiber as a pretreatment of pre-oxidation at a load of 0.58 g/tex or less in the temperature range of 220 to 260° C. under conditions in which the degree of cyclization (I1620/I2240) of the precursor fiber measured by a Fourier transform infrared spectrophotometer (FT-IR) does not exceed 7%, initially-drawing the precursor fiber at a load of 2.7 to 3.5 g/tex in an oxidizing atmosphere at 230 to 260° C. in the ranges of the degree of cyclization of not exceeding 27% and of the density of not exceeding 1.2 g/cm3, and then subjecting the pre-oxidation fiber to pre-oxidation treatment. A carbon fiber of high strength and high elasticity that is appropriate for composite materials that exhibit high composite performance is obtained by continuously subjecting this pre-oxidation fiber to carbonization treatment.