Abstract: A lithium secondary battery is provided. The battery comprises: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound of formula (1), a fluorosilane compound of formula (2), a compound of formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte.

Abstract: A spiral fluted tap is provided which includes a threaded portion having an external thread corresponding to an internal thread to be cut and a cutting edge formed along a spiral flute formed to divide the external thread, and being screwed into a prepared hole that is provided on a workpiece to cut an internal thread by the cutting edge on an inner circumferential surface of the prepared hole with discharging chips toward a shank via the spiral flute, the spiral flute having a stepped portion at a rear end of a chamfer portion or in a portion on a shank side from the rear end of the chamfer portion in the threaded portion, and a flute bottom diameter on a distal end side of the spiral fluted tap from the stepped portion being smaller than a flute bottom diameter on a shank side from the stepped portion.

Abstract: A helical flute has a constant lead part and a gradually increased lead part. The constant lead part has an axial length ranging from 0.3×LA to 1.2×LA and includes at least entirety of a leading part, so that the cutting performance of a cutting edge at the leading part and shape of chips (curled shape, etc.) are stable. In the constant lead part, because a lead is the smallest and a helix angle is large, a rake angle of the cutting edge is large, so that an excellent cutting quality is obtained and the chips become curled well. Meanwhile, in the gradually increased lead part, because of the lead gradually increased toward a shank, the chips are rapidly discharged toward the shank.

Abstract: A drill achieves a long tool life while improving a property for discharging chips. The drill includes: a columnar body which is rotated about an axis; a plurality of cutting edges each being formed at a tip end portion of the body; and a plurality of thinning edges each being formed in conjunction with the cutting edge nearer the axis by providing thinnings at the tip end portion of the body. At least one of the plurality of thinning edges is provided with a concave portion that is formed by cutting the thinning edge to be recessed in a semicircular shape toward the rear side in the rotational direction, and a center of the semicircular-shaped concave portion is provided on a line extended from the tip end portion of the thinning edge when viewed from a tip end direction of the body.

Abstract: Disclosed is a separator for a battery, which comprises a porous film mainly composed of a polyolefin film, has heat resistance, and can improve battery properties. Specifically disclosed is a separator for a battery, which is characterized by having a layer mainly composed of a polyolefin resin, wherein at least one surface of the separator has an arithmetic average roughness (Ra) of 0.3 ?m or more.

Abstract: A spiral tap is disclosed having a thread portion having an external thread, spiral flutes which is fluted in the same direction as a cutting/rotating direction, as seen in a direction away from a shank side, to divide the external thread, and cutting edges formed along the spiral flutes; the thread portion including a full thread portion having a fixed outer diameter, and a chamfer portion decreasing in outer diameter toward a tap end; the chamfer portion being screwed into a prepared hole to cut an internal thread on an inner circumferential wall of the prepared hole and to discharge chips along the spiral flutes toward the shank; the chamfer portion having an external thread with screw threads which is formed such that outer circumferential portions are removed, at a linear line for cutting as seen from a direction perpendicular to a cross-section involving an axis O, from the screw threads having the same dimension as that of the full thread portion; and the linear line intersecting the axis O at an incli

Abstract: A following margin of a following flank of an external thread is shifted more in a screw-rotation direction than a leading margin of a leading flank. Thus, during biting, the following margin bites first, thereby suppressing a force that pushes back a tap and reducing a tapping torque. Because margin portions can be disposed parallel to an axis of a thread forming tap, working is easy and manufacture can be performed inexpensively. When, in forming an external thread by grinding by a grinding abrasive, an inclination angle of the axis of a tap blank and an abrasive axis of the grinding abrasive is equal to a lead angle of the external thread, the margins are formed symmetrically across a root. On the other hand, if the inclination angle is made greater than the lead angle, the following margin can be shifted in the screw-rotation direction, enabling manufacture to be performed as easily and inexpensively as in a conventional case.

Abstract: A reagent preparing device capable of supplying a predetermined reagent, which includes a first liquid and a second liquid different from the first liquid, to a measurement section for measuring a specimen using the reagent, comprising: a reagent preparing section for preparing the predetermined reagent; a characteristic measurement device for measuring characteristic of the reagent prepared by the reagent preparing section; and a controller configured for performing operations comprising, controlling the supply of reagent prepared by the reagent preparing section to the measurement section according to the measurement result by the characteristic measurement device, and calibrating the characteristic measurement device based on a known characteristic value of a standard liquid having the known characteristic value and a measurement result obtained by measuring the characteristic of the standard liquid by the characteristic measurement device, is disclosed. A specimen processing system is also disclosed.

Abstract: A reagent preparing device capable of supplying a predetermined reagent, which includes a first liquid and a second liquid different from the first liquid, to a measurement section for measuring a specimen using the reagent, comprising: a pressure generator for generating pressure to transfer liquid; a reagent preparing section for executing a preparation operation of the predetermined reagent using the pressure generated by the pressure generator; and a controller configured for performing operations comprising: determining whether or not the reagent preparing section is executing the preparation operation, and controlling the generation of the pressure by the pressure generator according to the determination result, is disclosed. A reagent preparing method and a specimen processing system are also disclosed.

Abstract: A personal digital assistant 1 composed of a main body 2 formed with an operation section 212; a cover body 3 which is freely attached and slides parallel to the operating section 212 from a position overlapped on the operation section side of the main body 2; and an energization spring 45 formed in the cover body 3 which applies force along a direction which maintains an opened state in an opened position where the cover body 3 has been made to slide from the main body 2. Accordingly, a sliding type personal digital assistant can be stabilized in a closed position and/or an opened position and prevent opening or closing in a midway through position.

Abstract: A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S—F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), R1 and R2 are an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), R3 to R5 are an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1?p+q+r?3.

Abstract: In FIG. 2, a diameter Dd of drilling edges of a drill is selected smaller than a valley diameter d1 of a male thread of a tap portion, and an inner diameter D1 of a female thread is defined by the valley diameter d1 of the male thread. Therefore, a predetermined radial gap is formed between the male thread 30 formed by the tap portion and the drill. When a tap with the drill is reversely rotated to be pulled out from the female thread after cutting the female thread, the tap released from the restriction may defectively displace in the diameter direction upon pulling out the male thread of the tap portion from the female thread. However, the drill hardly contacts with the female thread, so that the occurrence of the defective product due to the contact is suppressed.

Abstract: As shown in FIG. 1, rake surfaces of cutting edges 26 of a shank-side thread portion 24b formed in a full thread portion 24 are formed with chamfers 30 having the chamfer height Hmen fallen within the range of 15% to 100% of the thread height Hneji. This allows chips to be further easily pushed out toward an outer circumferential area along the chamfers 30. In addition, the cutting edges 26 can have the increased strength thanks to formation of the chamfers 30. This effectively prevents occurrence of chipping and breakage resulted from the biting of the chips. Further, the chamfer-side thread portion 24a formed on the full thread portion 24 at the distal end is contiguous to the chamfer portion 22, which has an original complete thread configuration with more than one thread and not more than five threads. In addition, the shank-side thread portion 24b formed with the chamfers 30 has an original thread configuration except areas around the cutting edges 26.

Abstract: A drill achieves a long tool life while improving a property for discharging chips. The drill includes: a columnar body which is rotated about an axis; a plurality of cutting edges each being formed at a tip end portion of the body; and a plurality of thinning edges each being formed in conjunction with the cutting edge nearer the axis by providing thinnings at the tip end portion of the body. At least one of the plurality of thinning edges is provided with a concave portion that is formed by cutting the thinning edge to be recessed in a semicircular shape toward the rear side in the rotational direction, and a center of the semicircular-shaped concave portion is provided on a line extended from the tip end portion of the thinning edge when viewed from a tip end direction of the body.

Abstract: As shown in FIG. 1, a helical flute has a constant lead part and a gradually increased lead part. The constant lead part has an axial length ranging from 0.3xLA to 1.2xLA and includes at least entirety of a leading part, so that the cutting performance of a cutting edge at the leading part and shape of chips (curled shape, etc.) are stable. In the constant lead part, because a lead is the smallest and a helix angle is large, a rake angle of the cutting edge is large, so that an excellent cutting quality is obtained and the chips become curled well. Meanwhile, in the gradually increased lead part, because of the lead gradually increased toward a shank, the chips are rapidly discharged toward the shank. Thus, the excellent cutting performance and the chip discharge performance rendered by the gradually increased lead are highly stabilized by the presence of the constant lead part. In this way, the durability is further improved.

Abstract: A cold forming tap and a method of manufacturing the cold forming tap. Since the following side margin M2 of the following side flank (22b) of a male screw (22) is deviated from the leading side margin M1 of the leading side flank (22a) thereof in a screw-in rotating direction as shown in FIG. 2 (a), the following side margin M2 bites precedently in biting and a force to push back a tap is suppressed to reduce a tapping torque. Also, a margin part M may be formed parallel with the axis of the cold forming tap (10), it can be easily manufactured at low cost Namely, when the male screw (22) is ground by a grinding wheel (32), a margin can be symmetrically formed with respect to a bottom as shown in FIG. 2 (b) when the tilt angle ? of the axis of a tap material (30) relative to the centerline of the grinding wheel (32) is the same as the lead angle of the male screw.