Abstract: A wavelength selective switch includes a substrate. On the substrate, the wavelength selective switch includes at least one input port, a dispersive element, a light converging element, a light deflecting member, an output port, and a driving mechanism which drives at least one of the dispersive element, the light condenser element, and the light deflecting member, and drive by the driving mechanism is a rotational drive around an axis perpendicular to the substrate, for the dispersive element, and is a translational drive in a direction of dispersion of wavelength with respect to the substrate, for the light condenser element or the light deflecting member.

Abstract: A method for producing a polarizing film comprising the step of dipping a polyvinyl alcohol film in/on which iodine is adsorbed and oriented in an aqueous solution containing boric acid wherein the aqueous solution has an absorbance of 0.13 or less at a wavelength of 450 nm. The produced polarizing film has a high contrast.

Abstract: An optical disc device prevents a rail guide from falling off from a bottom case when a housing receives an impact force. The bottom case 2 includes a bottom plate 2a, a side plate 2b and a second bottom plate 2c. The rail guide 3 has a bottom surface 3a, a side surface 3b and an upper surface 3c. The side surface 3b of the rail guide is engaged with the side plate 2b of the bottom case. The rail guide has a convex portion 3d that is located on the side surface 3b of the rail guide, the convex portion extending from the upper surface of the rail guide and being in contact with the second bottom plate 2c of the bottom case. The convex portion 3d prevents the rail guide 3 from falling off from the bottom case 2 when the bottom case 2 is deformed.

Abstract: A housing included in an optical disc device 1 includes a top case 2 and a bottom case 3. The top case 2 includes a ceiling plate 2a and side plates 2b. The bottom case 3 includes a bottom plate 3a and side plates 3b. The top case 2 and the bottom case 3 are assembled and fixed to each other so that the side plates 2b of the top case are located on the outer sides of the side plates 3b of the bottom case. The top case is formed with a groove 2d and flat portions 2e on an inner-side end portion of the ceiling plate 2a of the top case, the groove 2d and flat portions 2e extending along bent portions 2c of the side plates 2b of the top case. The flat portions shield the groove 2d.

Abstract: A strained Si—SOI substrate, and a method for producing the same are provided, wherein the method includes the steps of growing a SiGe mixed crystal layer 14 on an SOI substrate 10 having an Si layer 13 and a buried oxide film 12; forming protective films 15, 16 on the surface of the SiGe mixed crystal layer 14; implanting light element ions into a vicinity of the interface between the Si layer 13 and the buried oxide film 12; performing a first heat treatment at a temperature in the range of 400 to 1000° C.; performing a second heat treatment at a temperature not lower than 1050° C. under an oxidizing atmosphere; performing a third heat treatment at a temperature not lower than 1050° C. under an inert atmosphere; removing the Si oxide film 18 formed on the surface; and forming a strained Si layer 19.

Abstract: A method for the production of a water-absorbing resin is to be provided which permits enhancement and stabilization of property, for example, liquid permeability, of a water-absorbing resin by a simple and convenient method without requiring change of raw materials or expensive facility investment. The method comprises a polymerization step for polymerizing an aqueous solution of acrylic acid (or salt thereof) to obtain a hydrogel cross-linked polymer; a drying step for drying the hydrogel cross-linked polymer to obtain a water-absorbing resin powder; a classification step for classifying the water-absorbing resin powder; and a surface cross-linking step for surface cross-linking the water-absorbing resin powder before or after the classification step, wherein electricity is eliminated in the classification step.

Abstract: [Problem] To provide a pneumatic conveyance method for a water-absorbing resin powder substance, which is capable of suppressing property decrease of the water-absorbing resin powder substance, while suppressing obstruction phenomenon. [Solution] A conveyance method for a water-absorbing resin powder substance by pneumatic conveyance of the water-absorbing resin powder substance during a production step via a transportation pipeline, wherein a variation of a solid-gas ratio (R1/R2) exceeds 1 and is equal to or smaller than 7, provided that R1 (kg-resin/kg-air) stands for an initial solid-gas ratio at a start point of the transportation pipeline, and R2 (kg-resin/kg-air) stands for a terminal solid-gas ratio at a terminal point of the transportation pipeline is provided.

Abstract: An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an object side of the aperture stop, the positive lens group has a cemented lens which is formed by cementing a plurality of lenses, in a rectangular coordinate system in which a horizontal axis is let to be Nd and a vertical axis is let to be ?d, when a straight line indicated by Nd=?×?d+? (where, ?=?0.017) is set, Nd and ?d of at least one lens forming the cemented lens is included in both of areas namely, an area which is determined by a line when a lower limit value is in a range of a following conditional expression (1a), and a line when an upper limit value is in a range of the following conditional expression (1a), and of an area determined by following conditional expressions (2a) and (3a). 1.45<?<2.15??(1a) 1.30<Nd<2.

Abstract: In an optical disc device, the device effectively reduces noise generated during the time of optical disc revolution and at the same time prevents a tray and an optical disc placed on the tray from coming into contact with each other or a circuit board mounted on the tray from undergoing electrostatic destruction. A circuit board for controlling a spindle motor and a pickup is mounted on a tray for placing an optical disc on the reverse side of the rear area. There are formed through-holes crookedly piercing through the tray in the thickness direction in the rear area of the tray. The through-holes are so constructed that their openings on tray's reverse side are invisible from their openings on tray's face side.

Abstract: Provided is a method of transporting an absorbent resin powder, said method being suitable for long-distance transport, and being able to inhibit the deterioration of the properties of the absorbent resin powder while also inhibiting obstructions. During the manufacturing process, the absorbent resin powder is transported pneumatically via transport pipes. This transport method involves two or more air transport devices (A, B, C) within one transport section, and the air transport devices (A, B, C) are connected in series by transport pipes (P1, P2, P3).

Abstract: To find a therapeutic agent and/or a preventive agent for diabetes mellitus or the like having excellent activity and safety. A compound represented by the following general formula (I), or a pharmacologically acceptable salt thereof. In the formula, X represents ?C(R5)- or ?N—; Y represents —O— or —NH—; L represents a bond or a substitutable C1-C3 alkylene group; M represents a substitutable C3-C10 cycloalkyl group, a substitutable C6-C10 aryl group, or a substitutable heterocyclic group; R1 represents a C1-C6 alkyl group, a C3-C10 cycloalkyl group, a C1-C6 haloalkyl group, a C2-C6 alkenyl group, a C2-C6 alkynyl group, a C1-C6 aliphatic acyl group, a C1-C6 alkoxy C1-C6 alkyl group, or a C6-C10 aryl group; and R2, R3, R4, and R5 may be the same or different and each represent a hydrogen atom, a halogen atom, a C1-C3 alkyl group, a C1-C3 haloalkyl group, a C1-C3 alkoxy group, or a nitro group.

Abstract: An image forming optical system according to the present invention is characterized in that, in an image forming optical system having a positive lens group, a negative lens group, and an aperture stop, the positive lens group is disposed at an object side of the aperture stop, the positive lens group has a cemented lens which is formed by cementing a plurality of lenses, in a rectangular coordinate system in which a horizontal axis is let to be Nd and a vertical axis is let to be ?d, when a straight line indicated by Nd=?×?d+? (where, ?=?0.017) is set, Nd and ?d of at least one lens forming the cemented lens is included in both of areas namely, an area which is determined by a line when a lower limit value is in a range of a following conditional expression (1a), and a line when an upper limit value is in a range of the following conditional expression (1a), and of an area determined by following conditional expressions (2a) and (3a). 1.45<?<2.15??(1a) 1.30<Nd<2.

Abstract: An apparatus (2) includes: a first tank (4); a line mixer (6); a second tank (8); a cooling jacket (10); a first tube (12); a second tube (14); and a third tube (16). In the first tank (4), (i) sodium persulfate serving as a polymerization initiator and (ii) water are fed so as to obtained an aqueous solution. The aqueous solution is continuously taken out and transferred via the first tube (12) to the line mixer (6). Between the first tank (4) and the line mixer (6), water is injected into the first tube (12). The water and the sodium persulfate aqueous solution are stirred together in the line mixer (6). This stirring decreases a concentration of the aqueous solution. The resulting aqueous solution is continuously fed to the second tank (8) via the second tube (14). The aqueous solution is then continuously taken out via the third tube (16) and is continuously added to an acrylic acid (salt) aqueous solution.

Abstract: A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a drawing angle of single fibers formed by the single fibers and a spinneret surface of a spinneret is in a range from 87° to 92°, the single fibers being fibers discharged from the outermost spinning holes located in the long side direction of the spinneret and running to a fiber bundle diverting guide provided in a coagulation bath.

Abstract: There is provided a production method for a water-absorbing resin for stably and continuously producing the water-absorbing resin with industrially high property, in particular, the water-absorbing resin with high liquid permeation. A method of the present invention relates to a production method for a water-absorbing resin including: a polymerization step of an aqueous solution of an unsaturated monomer; a drying step of the resultant hydrogel polymer; and a surface cross-linking step after drying; characterized by including a pneumatic transportation step for pneumatic transporting the water-absorbing resin powder substance in a pipeline with a surface roughness (Rz) of the inner surface of equal to or smaller than 800 nm, by using gas with a dew point of ?5° C. to ?100° C.

Abstract: An optical fiber array is formed by including m number of optical fibers (where, m is a natural number other than 0), an optical fiber aligning member on a surface of which, at least m number of grooves are formed in parallel, and a cover. An end portion of the optical fiber is disposed in the groove of the optical fiber aligning member, and is held by the optical fiber aligning member and the cover. Furthermore, when being held by the optical fiber aligning member and the cover, by setting a line segment which has connected a point on an outer periphery in contact with the cover, of the optical fiber to be a straight line, the optical fiber is supported at three points by the groove and the cover.

Abstract: To prevent an optical disc from being removed from a clamper even when an impact force is applied in an optical disc apparatus. A displacement amount by which a disc motor is sunk on the bottom case side is suppressed. In more detail, a convex portion which protrudes in the bottom cover direction is provided at a region including the whole or a part of an orthographically-projected surface of the disc motor on a surface of a bottom case opposed to a rear surface of the disc motor, and in a state of recording or reproducing, the sum of a distance between a motor fixing plate and a bottom cover and a distance between the bottom cover and the convex portion of the bottom case is smaller in the rotational axis direction of the disc motor than the sum of a distance between an optical disc and a tray and an insertion depth by which a clamper is inserted into a center hole of an optical disc.

Abstract: There is provided a filling method which is capable of suppressing uneven distribution of particle diameter and suppressing property decrease of the particulate water-absorbing agent. The method for filling the particulate water-absorbing agent according to the present invention includes a abutting step for making a member for filling the particulate water-absorbing agent abutted on a vibrator; a supplying step for supplying the particulate water-absorbing agent to the member for filling; and a vibration step for vibrating the particulate water-absorbing agent present in the member for filling by vibrating the vibrator. Preferably, the supplying step is performed by dividing into a plurality of times. Preferably, the vibration step includes an intermediate vibration step performed at a stage where a part of a plurality of times of the supplying steps is completed, and a final vibration step performed at a stage where all of a plurality of times of the supplying steps is completed.

Abstract: A fast reactor including a reactivity control assembly including a reactor shutdown rod and neutron absorbers, a reactor shutdown rod drive mechanism, and units of neutron absorber drive mechanism. The reactor shutdown rod drive mechanism causes an inner extension tube to fall and release the reactor shutdown rod by a gripper section by turning off the power supply to a holding magnet at the time of scram. When grasping the neutron absorbers, an outer extension shaft is pulled up to allow both of the extension shafts to be inserted. After the outer extension tube gets to a handling head section of the neutron absorber, the outer extension shaft is pushed down to grasp the neutron absorber externally by latch fingers of the gripper section so that the neutron absorber can be moved up and down.

Abstract: [Problem] To obtain a particulate water absorbent having excellent and stabilized physical properties.