摘要:
A novel plasmid pCX311, which was constructed from Bacillus sp. C125 chromosomal DNA carrying the gene for extracellular production of xylanase and a vector plasmid pBR322. A novel microorganism, Escherichia coli HB101 (pCX311) carrying the plasmid pCX311 and being capable of extracellular production of xylanase. Method for culturing the microorganism characterized by cultivation of it in the medium containing NaCl (or KCl) and bran, or NaCl (or KCl) and xylan for 12-48 hours. According to this invention, useful high-molecular substances can be produced in a high yield.
摘要:
In a laser welding method of varying a waveform and a frequency of a laser output in a controlled manner so as to prevent occurrence of weld defects, a time change in light emission strength of a plasma or plume generated from a laser welded portion is detected, a laser output variation condition is set so that the time change in the light emission strength is in response to the variation in the laser output during laser welding. In a laser welding method of varying the waveform and frequency of a laser output suitably so as to prevent the occurrence of the weld defects, a new laser welding method can optimize a laser output variation condition more simply and securely.
摘要:
An inventive sealing body is a generally disk-like sealing body composed of two or more types of thermoplastic elastomers having different hardnesses, and comprises at least a needle stick part extended in axial direction and an outer edge part surrounding the needle stick part. The outer edge part has a higher hardness than that of the needle stick part. More specifically, a difference in JIS-A hardness between the outer edge part and the needle stick part, for example, is 5 to 15. The sealing body is tightly fitted in a generally cylindrical outer frame body composed of a rigid plastic to provide a cap. The cap is welded to a mouth part of a plastic container or the mouth part is tightly sealed with the sealing body to provide a medical container.
摘要:
A pre-FEC packet quality analyzer 310 measures quality information from a video stream which is not yet stored in a buffer 303 and on which a recovery process using FEC is not yet carried out. A post-FEC packet quality analyzer 308 measures quality information from the video stream which is stored in the buffer 303 and on which the recovery process using FEC is carried out. A video receiving terminal profile transmitter 307 generates a video receiving terminal profile including at least information showing the size of the buffer 303, and transmits the video receiving terminal profile to a home gateway device.
摘要:
In a multiplex communication system, a communication bus is connected to a communication bus disconnect control device. In the communication bus disconnect control device, a control section generates a communication bus disconnect signal when a trouble of the communication bus is detected. A communication bus disconnect device is provided for separating the communication bus into at least two communication bus groups in response to the communication bus disconnect signal.
摘要:
An offset voltage correction circuit for a gridded power tube, such as a gridded traveling wave tube (GTWT), provides from a pulsed, floating, negatively offset voltage signal representing the pulsed current output of the tube, a corrected pulsed, zero voltage offset signal. Such corrected signal is used in a feedback loop to control the voltage signal provided to the tube grid in a manner causing the pulsed output current of the tube to have a preestablished amplitude. The signal correcting circuit includes a .pi.-shaped network formed of a capacitor and first and second transistors. The two transistors are connected in electrical parallel so that between pulses of the offset voltage signal the first one of the transistors is held off and keeps the second transistor turned on so that the capacitor charges to the negative offset voltage of the offset voltage signal. During the pulses of the offset voltage signal, the first transistor is turned on and thereby turns the second transistor off, causing the capacitor output side to provide a zero offset voltage pulse having an amplitude equal to the sum of the negative offset and positive voltages (the total peak-to-peak voltage) of the voltage offset signal. The zero offset signal is used by a control loop circuit and a grid pulse modulator to provide a control voltage signal to the grid of the tube which maintains the pulsed output current of the tube at a preselected level in spite of tube aging and thermal effects which tend to cause the output current to change.
摘要:
An apparatus for machining a thin-film layer of a workpiece, which is a transparent glass on which a thin-film layer is disposed on a top surface thereof, includes a workpiece-underside support mechanism for supporting the workpiece in a vertical direction by an air floatation mechanism and a suction mechanism, a clamp device for gripping the workpiece so as to follow the movement in the vertical direction of the workpiece, and a machining head for machining the thin-film layer with a laser beam. The machining head machines the thin-film layer on the top surface of the workpiece by irradiating the workpiece with a laser beam entering through the underside of the workpiece. Further including nozzles, the thin-film layer is machined while the cooling medium is delivered from the nozzles disposed by the thin-film layer side.
摘要:
The power conversion mechanism of a variable displacement reciprocating compressor includes a joint shaft (54) that is fitted to a drive shaft (30) through a bearing (56) and supported by an inner circumferential face of a support hole (58) formed in the cylinder block (20) so as not to be relatively rotatable but to be slidable relative to the inner circumferential face; a joint case (66) that is integrally and tiltably formed in the conversion mechanism (38); and a plurality of balls (74) rollably held between JS-side protrusions that are integrally formed in the joint shaft (54) and JC-side protrusions (62) that are integrally formed in the join case (66). The variable suction throttle mechanism of the compressor uses the sliding movement of the joint shaft (54) to change air-flow resistance in a valve chamber (101) communicating with the support hole (58).
摘要:
An ink composition for sensing carbon dioxide gas contains a pH indicator formed using a combination of two or more types of pH indicator components, binder, and solvent and allows easy visual observation of color changes of an indicating portion caused by the concentration of carbon dioxide gas. When the ink composition is applied to a carbon dioxide indicator and package, a pinhole and poor seal of a carbon-dioxide-ambient package are easily found.
摘要:
A data relay device connected with a plurality of networks is provided with a transmission timing adjusting device for adjusting the timing of transmission of data frames. The relay device provides a time zone, in which transmission of new data frame to the network is inhibited immediately after transmission of data frame to the network of the relaying destination. Accordingly, even when the data frame to be relayed to the network is concentrated in the data relay device, the data frame from nodes of the network can be transmitted using the time zone.