摘要:
In order to efficiently delete a large chromosomal region with a length of from several tens to hundreds kb such as a cluster of biosynthesis genes encoding a toxic substance such as Aflatoxin, the present invention provides a method for the deletion of a large chromosomal region comprising transforming a transformant having an increased frequency of homologous recombination due to suppression of a Ku gene, which is a mitosporic filamentous fungus belonging to Trichocomaceae with a vector for the deletion of a chromosomal region, which comprises a pair of homologous region arms having a nucleotide sequence that is homologous with a fragment at either end of said chromosomal region, and deleting the chromosomal region by means of homologous recombination between the resulting transformant and said vector.
摘要:
A packet forwarding apparatus with a function of registering packet forwarding control information for each user terminal into a user management table during PPPoE connection and authentication phases in which the apparatus carries out predetermined communication procedures with each user terminal. During DHCP and IP forwarding phases following the authentication phase, the packet forwarding apparatus controls packet forwarding based on the user management table. Packets are forwarded in the form of PPPoE frame until the authentication phase is completed and packets are forwarded in the form of Ethernet frame in the DHCP and IP forwarding phases.
摘要:
Provided are a protein comprising the amino acid sequence as shown in SEQ ID NO: 2 and having prolidase activities, a prolidase gene coding for the protein, a prolidase gene comprising the nucleotide sequence as shown in SEQ ID NO: 1, recombinant DNA having the gene inserted into vector DNA, and a transformant or transductant comprising the recombinant DNA, and a method for producing prolidase using the transformant or transductant.The present invention can improve the prolidase through protein engineering. The present invention can be also used for improving microorganisms used in the production of enzymes for food processing and fermented foods.
摘要翻译:提供了包含SEQ ID NO:2所示的氨基酸序列并具有唾液酸酶活性的蛋白质,编码该蛋白质的脯氨酶基因,包含SEQ ID NO:1所示的核苷酸序列的唾液酸酶基因,具有SEQ ID NO: 插入到载体DNA中的基因,以及包含重组DNA的转化体或转导体,以及使用转化体或转导体产生唾液酸酶的方法。 本发明可以通过蛋白质工程改善脯氨酸酶。 本发明还可以用于改善用于食品加工和发酵食品酶生产的微生物。
摘要:
In an electronic endoscope system, a flexible scope has a solid image sensor provided at a distal end thereof, to generate image-pixel signals. A proximal end of the scope is detachably connected to a video-signal processing unit, which produces a video signal based on the image-pixel signals. A monitor reproduces an image in accordance with the video signal. A displaying-size changer changes a size of a displaying-area of the image on a screen of the monitor to another size and vice versa. A pointer-image generator generates a pointer image on the monitor screen. A pointer-image controller controls a shifting of the pointer image on the monitor screen, and includes a pointer-image-position converter that converts a position of the pointer image on the monitor screen in accordance with the size-change of the displaying-area of the image on the monitor screen, such that two positions, indicated by the pointer image on the two-sized displaying-areas, correspond to each other.
摘要:
A mixed powder thermal spraying method includes forming a mixed thermal spraying film comprising two kinds of materials having different melting points wherein powder-feeding points are provided for each material; and each powder-feeding port is controlled respectively to externally feed each material, and wherein the thermal powder spraying method is bore thermal spraying carried out with a bent plasma jet.
摘要:
A device for controlling an amount of light of a lighting unit for use in an endoscope that is used to view an image of an object. A light shielding system shields light generated by a light source and transmitted to the endoscope and a stepping motor drives the light shielding system for a plurality of predetermined time intervals. A system detects a brightness of the image during each of the plurality of predetermined time intervals and an input system inputs one of a plurality of desired brightnesses of the image. A generating system generates a predetermined number of pulses during each of the plurality of predetermined time intervals, the predetermined number of pulses being transmitted to the stepping motor and a system determines an angular position of the light shielding system. A setting system sets one of a plurality of allowed brightness ranges of the image in response to the determined angular position of the light shielding system and a system determines whether the detected brightness is within the set one of the plurality of allowed brightness ranges.
摘要:
In an electronic endoscope, a flexible scope has an image sensor provided at a distal end thereof, and an optical light guide extending therethrough. The scope is detachably connectable, at a proximal end thereof, to a processing unit, which processes image-pixel signals successively read from the image sensor. A light source is provided in the processing unit such that light, emitted from the light source, is guided through the guide and radiates from the distal end of the scope. An aperture-stop is associated with the source that regulates the radiation of light from the distal end of the scope. A histogram generator generates a luminance-signal-histogram based on the processed signals. An average luminance level-value is approximately calculated based on luminance signals exhibiting thinned luminance levels extracted from the histogram. The aperture-stop is controlled in accordance with the approximate average luminance level-value, such that an image having a constant brightness level is reproduced based on the processed signals.
摘要:
A power supply apparatus includes a semiconductor switching device for outputting power and a control circuit for controlling the on/off operation of the semiconductor switching device. The control circuit includes a circuit for applying, when turning on the semiconductor switching device, a first control signal corresponding to the difference between the output voltage of the power supply apparatus and a first reference value to the semiconductor switching device in accordance with the increase in the output voltage from the power supply apparatus thereby to operate the semiconductor switching device in a non-saturated area, so that the semiconductor switching device is turned on gradually.
摘要:
A method of manufacturing a metallic fiber in which from a convergent extended wire, which is formed by a metallic fiber and a matrix member which is formed of a metallic material and whose dissolvability is higher than the dissolvability of the metallic fiber, the matrix member is continuously dissolved and removed by an electrolytic processing in a plurality of electrolytic tanks which are arranged in the conveying direction of the convergent extended wire, wherein: the convergent extended wire is passed through electrolytes in the plurality of electrolytic tanks, which are arranged in the shape of a gentle convex arch at the vertical direction upper side which includes the conveying passage of the convergent extended wire, the convergent extended wire is passed above a plurality of feeding devices which are provided at the outer sides of the electrolytes and which are disposed in the same arch-shape so as to correspond to the electrolytic tanks, in each of the plurality of electrolytic tanks, the metallic fiber is maintained in one of a cathode reduction area and a passivation area, or alternatively, anode current is maintained at a predetermined potential which is closer to 0, and the matrix member is anode-electrolyzed. At this time, a method of manufacturing the twine of metallic fibers, further including the step of: intertwining the convergent extended member in the unit of two to four before the electrolytic processing, while the convergent extended member is formed by a forming device in a spiral shape whose diameter is larger than the diameter of a closely-intertwined twine.
摘要:
An electronic endoscope of the present invention includes a video-scope having an image sensor, a video-processor, to which a proximal end of the video-scope and a monitor are respectively connected, a character and mark generation controller, and an area-image changer. The character and mark generation controller generates character signals and indicator-mark signals, and then feeds the character signals and the indicator-mark signals to the monitor. The image-area changer changes a size of an image-area of the object image displayed on the screen of the monitor to another size, thus the object image is selectively displayed within one of plural image-areas on the screen in accordance with a size change of the image-area. The characters and mark generation controller includes a display-position adjuster that determines display-positions of the character information and the indicator-mark on the basis of a reference table, in which a correspondence relationship between each of the image-area and each of the display-positions of the character information and the indicator-mark is indicated.