Abstract: A line transition device which intervenes between a non radiative dielectric waveguide and a hollow waveguide for example, includes a dielectric waveguide having a dielectric strip held by a pair of conductors which face each other, and a waveguide, wherein a part of the dielectric strip of the dielectric waveguide is adjacent to or inserted in the hollow waveguide.

Abstract: A novel enzyme which is useful in the optical resolution of D,L-pantolactone via D-selective asymmetric hydrolysis and a gene encoding the the same are provided. The invention discloses the gene coding for a natural D-pantolactone hydrolase (for example, one originating in Fusarium oxysporum) or proteins having an activity substantially equivalent thereto; host cells transformed with DNA containing a nucleotide sequence coding for said protein, processes for producing said protein via using said host cells and uses of said proteins and host cells.

Abstract: A processing method of a master for optical disk by a laser processing to form grooves, prepit groups on a groove track and prepit groups on a land track in a high quality and in a good balance. On an optical course of a laser beam for forming the prepit groups, an optical deflector is provided. Also, the laser beam is positioned to shoot on the center of the groove track and the land track. The deflector deflects the laser beam in the same amount of deflection to the opposite direction to form each of the prepit groups. Further, a difference in diffraction efficiencies by a difference in the deflection directions is corrected by controlling the laser power independently from each other.

Abstract: An object of the present invention is to provide an image processing apparatus capable of correctly detecting character boundaries and outputting a binary image that is expressed in such a manner as to be closer to the original image. A current subject pixel is judged as being of a character edge when the difference between a maximum value Qmax and a minimum value Qmin of the densities of five pixels that are the subject pixel and four reference pixels that are located on top-right, bottom-right, top-left, and bottom-left of the subject pixel is greater than a predetermined threshold value Te, that is, Qmax−Qmin>Te. For each of input images having different halftone dot pitches, a user can select an optimum one of judging means with different distances between the subject pixel and the reference pixels.

Abstract: When an input image and a sender information image independent from each other are combined into one transmission image in which the sender information image which has a lower line count (smaller area) is laid out in the upper portion while the input image having a greater area than the sender information image is laid out in the lower portion, both the input image and sender information image are individually rotated by 180 degrees before encoding, then the transmission image is encoded by JPEG from the input image side having a greater area.

Abstract: A process for a master optical disk of the present invention is a process for a master optical disk having a physical format in which in a groove-and-prepits-included rewritable optical disk, prepits not being on spirals identical to those of a groove, for example, prepits shifted outward and inward by a half-track pitch from the groove center, are recorded, wherein an acoustooptic-effect-used optical deflector or a field-optical-effect-used optical deflector 101 is disposed on an optical path of a mastering apparatus so that a single laser beam is deflected. This process makes it possible to use a single processing scan to perform laser processing for a plurality of arbitrary points, for example, the center of the groove, and positions shifting inward and outward by a half-track pitch from the center.

Abstract: A dielectric lens antenna includes a dielectric lens, a primary radiator and a dielectric member provided between the dielectric lens and the primary radiator. The dielectric member is formed into a substantially circular cone shape, and the dielectric constant of the dielectric member is reduced continuously in the radial direction of the dielectric lens from the center line passing through the center of the dielectric lens and the primary radiator.

Abstract: A method for producing nucleoside-5′-phosphate esters inexpensively and in high yields by phosphorylating a nucleoside with a phosphate group donor using an acid phosphatase having an increased affinity for the nucleoside and/or an increased temperature stability at a pH of pH 3.0 to 5.5, to produce a nucleoside-5′-phosphate ester. Mutant acid phosphatases having increased affinity for nucleosides and/or an enhanced temperature stability are also provided.

Abstract: In a recording apparatus, a pit gain selection circuit 33 converts an amplitude proportional to pit length data into gain data, and outputs the gain data to a pit cutting signal generation circuit 39 via a timing adjustment circuit 35. The generation circuit 39 selects gain data proportional to each pulse duration of a pit signal and converts it into an analog signal. A groove correction value selection circuit 41 converts the analog signal into a groove correction value on the basis of the pit length data, and outputs the groove correction value to a groove correction signal generation circuit 47 via a timing adjustment circuit 45. The generation circuit 47 calculates a magnitude of groove signal correction, converts it into an analog signal, and outputs it to a subtractor 51. The subtractor 51 subtracts the analog signal from this analog signal.

Abstract: A method for producing nucleoside-5′-phosphate esters inexpensively and in high yields by phosphorylating a nucleoside with a phospahte group donor using an acid phosphatase having an increased affinity for the nucleoside and/or an increased temperature stability at a pH of pH 3.0 to 5.5, to produce a nucleoside-5′-phosphate ester. Mutant acid phosphatases having increased affinty for nucleosides and/or an enhanced temperature stability are also provided.

Abstract: A first transmission line and a second transmission line are caused to be partially opposite to each other, and by use of the opposite portions of the first transmission line and the second transmission line, the first transmission line and the second transmission line are relatively shifted in parallel from their opposite state to their non-opposite state.

Abstract: A process for the production of dihomo-&ggr;-linolenic acid comprising the steps of culturing a microorganism having an ability to produce araquidonic acid and having a reduced or lost &Dgr;5 desaturase activity to produce dihomo-&ggr;-linolenic acid or a lipid containing dihomo-&ggr;-linolenic acid, and recovering the dihomo-&ggr;-linolenic acid.

Abstract: A first transmission line and a second transmission line are caused to be partially opposite to each other, and by use of the opposite portions of the first transmission line and the second transmission line, the first transmission line and the second transmission line are relatively shifted in parallel from their opposite state to their non-opposite state.

Abstract: A process for the production of dihomo-&ggr;-linolenic acid comprising the steps of culturing a microorganism having an ability to produce araquidonic acid and having a reduced or lost &Dgr;5 desaturase activity to produce dihomo-&ggr;-linolenic acid or a lipid containing dihomo-&ggr;-linolenic acid, and recovering the dihomo-&ggr;-linolenic acid.

Abstract: An antenna device has less change in gain during beam scanning, caused by the displacement of a primary radiator with respect to a dielectric lens, and scanning can be carried out over a large angular range at uniform gain. A primary radiator has a focal plane in a position deviating from the optical axis of a dielectric lens, and when the primary radiator intersects the optical axis, the primary radiator leaves the focal plane. As a consequence, by moving the primary radiator away from the optical axis to other positions, change in the gain caused by change in the open efficiency and aberration can be reduced.

Abstract: A dielectric line switch is provided which is capable of easily controlling the propagation of an electromagnetic wave. Also provided is an antenna device employing said dielectric line switch. As an embodiment of the invention, a plurality of dielectric lines and a plurality of primary radiators are provided on a rotary unit. With the rotation of the rotary unit, the dielectric lines are switched ON and OFF by virtue of mechanical means, so that a desired change-over may be effected among the plurality of primary radiators in a time sharing manner, and the positions of the primary radiators may be shifted within a plane of the focal point of a dielectric lens, thereby enabling the transmission wave beam and/or reception wave beam to scan in a desired manner.

Abstract: A recording apparatus locates a photo detector at a predetermined position on an optical base, stopping the rotation of a resist master disk, activating a focusing laser, and optimally positioning a head by means of a head slider control circuit. The resist master disk then starts to rotate, followed by the starting of a focus servo circuit. A focus fine adjust circuit effects a fine movement of the photo detector using positioning data to achieve optimum focusing. A differential amplifier serves to cause a recording lens to adjust to nullify the error signal. Display information is compared with the focusing position data and, when the numerical information coincides with the focusing position data, the above-mentioned focusing data is used as optimum focusing position data for the initial setting of the optimum focusing position. The use of optimum focusing position data in the form of numerical values permits easy initial setting of the optimum focusing position for different types of resist master disks.

Abstract: A method for producing nucleoside-5′-phosphate esters inexpensively and in high yields by phosphorylating a nucleoside with a phospahte group donor using an acid phosphatase having an increased affinity for the nucleoside and/or an increased temperature stability at a pH of pH 3.0 to 5.5, to produce a nucleoside-5′-phosphate ester. Mutant acid phosphatases having increased affinity for nucleosides and/or an enhanced temperature stability are also provided.

Abstract: A medical adhesive which comprises a polyion complex film formed from a polycationic substance and a polyanionic substance. This medical adhesive provides a sufficient gel strength for adhesion of tissues, and it is superior in handling properties and safety for the living body.

Abstract: The invention provides a dielectric lens, wherein the dielectric lens is rotation-symmetrically shaped, and a flat end is disposed at a part of the edge the dielectric lens. By the above described structure and arrangement, it become possible to widen a half-value angle in the direction which the flat ends of the lens are disposed without reducing a gain significantly.