摘要:
Provided are a biosensor chip measurement machine that can obtain accurate measurement results within a short period of time by employing only a tiny amount as a sample, and a measurement method therefor.A biosensor measurement machine 20 includes a power source 21, which is connected to a voltage regulator 22, a measurement instrument 23, and a controller 24 for supplying power. When a biosensor chip 1 is connected to the biosensor measurement machine 20 and a voltage is applied, the measurement instrument begins the measurement of a current value for a biosensor. When a measured current value or a measured charge value is greater than a reference value, the measurement is ended in accordance with an instruction issued by the controller 24, and when the value is smaller than the reference value, the measurement is continued in accordance with a controller instruction.
摘要:
There is a needle integrated biosensor, including: a biosensor including at least two electrodes, and a puncture needle to collect a body fluid by piercing a skin of a person to be tested, the biosensor and the puncture needle being integrated, wherein the puncture needle is able to be kept hygienic without the need of a protective cover or the like for the puncture needle.There is a needle integrated biosensor, including: a biosensor including at least two electrodes, and a puncture needle to collect a body fluid by piercing a skin of a person to be tested, the biosensor and the puncture needle being integrated, wherein a soft material is attached to the front end of the puncture needle so that the front end of the puncture needle is protected.
摘要:
There is provided a sensor chip including: a base plate; a cover layer; a hollow reaction portion provided between the base plate and the cover layer, in which a reaction is performed between a sample and a reagent applied thereinto; a sensing member constructed of an electrode which is exposed to the hollow reaction portion; and a sample inlet for conducting the sample to the hollow reaction portion, wherein entire portions of the base plate and the cover layer, which are located opposite to the sensing member provided with the hollow reaction portion, are made transparent. Otherwise, in the above-described sensor chip, a plate A having a groove A to which a reagent has been applied and a plate B having a groove B are stacked on each other in such a manner that the groove A is coupled with the groove B, so that the hollow reaction portion is formed; and an opening width of the groove B is larger than an opening width of the groove A at a portion of the groove B which is located opposite to a portion with the groove A, to which the reagent has been applied.
摘要:
It is intended to provide a biosensor chip capable of rapid and correct measurement, including a reaction chamber that enables a measurement of a very small amount of a measurement sample and has a small capacity and potassium ferricyanide having a very small crystal particle size disposed in the reaction chamber.In a biosensor chip 1, electrodes 3 and 4 are disposed on the lower substrate 2, and lower spacer 5 (7 and 8) is adhered on the electrodes 3 and 4. An upper spacer 11 (12 and 13) is adhered to an upper substrate 15, and a lower spacer 5 is attached to the upper spacer 11 by and adhesive agent 10. A lower groove 9 is formed between long and short lower spacers 7 and 8, and an upper groove 14 is formed between long and short spacers 12 and 13, so that a reaction chamber 17 is formed by the upper and lower grooves 9 and 14. A capacity of the reaction chamber is 0.3 μL, and an enzyme 18 and potassium ferricyanide are disposed in the reaction chamber 17 in such a fashion as to oppose to each other with a gap being defined therebetween. A crystal particle diameter of the potassium ferricyanide is 100 μm or less, and amount of the potassium ferricyanide is V×0.1 mg or more when the capacity of the reaction chamber 17 is V.
摘要:
A polypeptide absorbable into digestive organs, which is linked with a bioactive polypeptide, and assists absorption of the bioactive polypeptide into digestive organs when it is orally taken; a fusion polypeptide comprising the polypeptide absorbable into digestive organs and the bioactive polypeptide; and an oral composition comprising the fusion polypeptide are provided.
摘要:
A downsized biosensor in which an electrode is formed on one sheet of electrically-insulated substrate, and a sheet of flat substrate is worked three-dimensionally so as to dispose the electrode on the inner side of the substrate to provide a two-dimensional or three-dimensional electrode disposition, whereby a sample introduced by capillary phenomenon can be measured quantitatively in a small space. A production method of a biosensor comprising the steps of bending a plate member so as to position an electrode formed on the surface of the electrically-insulated plane member on the inner side, and disposing the electrode in a space surrounded by a substrate and a cover to thereby form the substrate and the cover from one sheet of plate member.
摘要:
A valve timing control system for an internal combustion engine has: a drive force transmitter or a chain sprocket; a cam shaft; a housing, a vane rotor; an advanced angle chamber and a delayed angle chamber; an oil pressure conveyer; a protrusion shaft; a target plate; and a sensor. The protrusion shaft is formed on at least one of the vane rotor and the housing, and protrudes forward. The target plate is mounted on at least one of the vane rotor and the housing. The target plate is formed substantially flat through a press molding, and is press fitted to the protrusion shaft. The target plate has a plurality of detector protrusions and one index protrusion. The detector protrusion and the index protrusion are equal in width.
摘要:
In an actuating apparatus applicable to an actuation of a valve installed in an intake air passage of an internal combustion engine, a first magnetic circuit (D.sub.1) is formed with a stationary member (A) and with a part of a driven member (B), the driven member being disposed within the stationary member so as to be linearly or angularly displaced, and a second magnetic circuit (D.sub.2) is formed in the stationary member and another part of the driven member so as to be branched from the first magnetic circuit, a strength of a magnetic flux flowing through the second magnetic circuit being the same as that of a magnetic flux flowing through the first magnetic circuit and a direction of the magnetic flux flowing through the second magnetic circuit being opposite to that of the magnetic flux flowing through the first magnetic circuit. Under the condition described above, at least one new magnetic flux is generated by means of electromagnetic coil(s), a direction of the new magnetic flux being such that the magnetic flux flowing through either of the first or second magnetic circuit is strengthened and that flowing through the other of the first or second magnetic circuit is weakened so that the driven member is linearly or angularly displaced at a position at which strengths of both magnetic fluxes flowing through the first and second magnetic circuits become again balanced.
摘要:
An AT-cut crystal oscillating reed formed by etching an AT-cut crystal wafer is provided. The wafer has a rotational parallel cut obtained by rotating a parallel cut by an angular degree of .theta..degree. relative to the X-axis of the wafer. The etching cross-section of the AT-cut crystal oscillating reed has a surface at an angle about 90.degree. from the front or back surface of the AT-cut crystal oscillating reed. This AT-cut crystal oscillating reed exhibits uniform characteristics and excellent reliability. Also provided is an AT-cut crystal oscillating reed with a low CI value. Finally, a method of etching an AT-cut crystal oscillating reed from an AT-cut crystal wafer is provided. A corrosion resisting film with gaps coats the wafer and is used in the etching process. In a preferred embodiment, the thickness of the wafer is designated t, the width of the gaps in the corrosion resisting films is designated l, and l.gtoreq.t/tan .theta.. The corrosion resisting film may be metal and may be formed into electrodes after the crystal oscillating reed is etched. In this manner, crystal oscillating reeds may be mass produced at a relatively low cost.
摘要:
A brush assembly applied to a motor includes a body portion attachable to a lower case, and an external connection substrate formed by a flexible substrate. A pair of brush pieces protrude from a front end of the body portion so as to be in contact with brush slide portions of commutator segments. The external connection substrate has a pair of terminals exposed from a housing and capable of being connected to spring terminals of an apparatus by crimping. The terminals are provided at a rear end of the external connection substrate, and protrude from the housing in the radial direction. First connecting portions electrically connected to the brush pieces are provided at a rear end of the body portion, and a pair of right and left second connecting portions are provided at a front end of the external connection substrate.