Abstract:
A test object receptacle, capable of measuring a test object in a wide range of concentrations with good accuracy and within a short time, contains a plurality of fine protruding portions inside grooves. The test object receptacle can fix antigens, antibodies and test objects faster than without the protruding portions. Furthermore, the protruding portions are so formed that the surface area thereof increases gradually to the downstream with respect to the movement direction of the test object in the grooves, the detection intensity (intensity of color development) of the test object is not saturated downstream of the grooves even when the test object has a high concentration. For this reason, the test object can be detected within a short time and the measurements can be conducted within a wide concentration range.
Abstract:
An amplifier circuit amplifies a differential signal supplied by a pair of input terminals. A phase controller circuit is placed between the emitters of two bipolar transistors and the ground. A feedback circuit is placed across the input and the output of the amplifier circuit for feeding the output of the amplifier circuit back to the input thereof. A phase change amount in the amplifier circuit is determined by the values of two inductors, whereas a phase change amount in the feedback circuit is determined by the values of two resistances and capacitors. The values of these devices are selected so that a phase difference between an input signal and a feedback signal is approximately 180 degrees in a range from the frequency of a fundamental wave of the input signal to the frequency of a second harmonic thereof.
Abstract:
An amplifier circuit 10 amplifies a signal inputted from an input terminal P1. A first feedback circuit 20 is placed across an emitter of a bipolar transistor 101 and an input of the amplifier circuit 10. A second feedback circuit 30 is placed across the input and an output of the amplifier circuit 10 for feeding the output of the amplifier circuit 10 back to the input. A phase change amount in the feedback circuit is determined by the values of an inductor and a capacitor. The values of these elements are selected so that a phase of a signal in which fundamental waves included in two feedback signals are combined and a phase of a signal in which second harmonics included in the two feedback signals are combined are shifted by approximately 180 degrees from a phase of a fundamental wave of an input signal.
Abstract:
A method for amplifying desired nucleic acid molecules by PCR which comprises the steps of isolating and purifying a group of nucleic acid molecules including desired nucleic acid molecules to be amplified, then carrying out PCR while establishing such a condition that the nucleic acid molecules capable of being amplified, except for primers, present in a PCR reaction solution are constituted by only the desired nucleic acid molecules and that the concentration of each primer used is limited to a level of not more than 100 nM; a method for producing a protein in a cell-free protein-synthesis system containing a cell-free extract which comprises using the nucleic acid of a single kind produced by the method described above and a method for establishing a protein library which comprises the steps of separately carrying out the method for amplifying desired nucleic acid molecules by PCR to obtain at least two kinds of nucleic acid molecules and separately carrying out the foregoing method for producing a protein using each of the at least two kinds of the amplified nucleic acids as a template to thus establish a protein library which comprises at least two kinds of proteins encoded by the resulting at least two nucleic acids respectively.
Abstract:
The object of the present invention is to provide a chip inductor structured for miniaturization, excellent mass-producibility and high reliability. The present invention discloses a chip inductor of a sealed type having a square-shaped winding comprising a bobbin a winding, which has a square-shaped flange on its both ends, and a metal terminal sticking out from the outer side surface of each respective flange with each respective metal terminal being bent inside each respective flange upward so as to stick out to the upper side surface of the flange, and also having the foregoing metal terminal further bent along the upper side surface of the flange, making it possible to insert mold the foregoing bent terminal forming the bobbin for a winding.
Abstract:
There is provided a semiconductor device, wherein a digital circuit region and an analog circuit region are located independently. A power supply wiring and a ground wiring are placed on the periphery of each circuit region and are connected to elements in each circuit region. A MOS capacitor is formed under the power supply wiring and the ground wiring. The terminals of the MOS capacity are connected to the power supply wiring and the ground wiring. Pads are placed in each circuit region surrounded by the power supply wiring, the ground wiring, and the MOS capacitor and are connected to the elements of each circuit region.
Abstract:
A variable gain amplifying apparatus has an amplifier, one or more first switching elements connected in parallel to the amplifier, and a phase shifter connected in series to the first switching element. The first switching element is enabled if the level of an input signal or an output signal is higher than a predetermined level, and the first switching element is disabled if the level of the input signal or the output signal is equal to or lower than the predetermined level. The amplifier does not operate when the first switching element is enabled, and the amplifier operates when the first switching element is disabled, and the amount of phase shift when the input signal is passed through the amplifier and phase shifter is substantially equal to the amount of phase shift when the input signal is passed through the first switching element.
Abstract:
An amplifier circuit (15) amplifies a differential signal supplied by a pair of input terminals ( {P1+, P1−}). A phase controller circuit (25) is placed between the emitters of bipolar transistors (101a, 101b) and the ground. A feedback circuit (35) is placed across the input and the output of the amplifier circuit (15) for feeding the output of the amplifier circuit (15) back to the input thereof. A phase change amount in the amplifier circuit (15) is determined by the values of inductors (201a, 201b), whereas a phase change amount in the feedback circuit (35) is determined by the values of resistances (301a, 301b) and capacitors (302a, 302b). The values of these devices are selected so that a phase difference between an input signal and a feedback signal is approximately 180 degrees in a range from the frequency of a fundamental wave of the input signal to the frequency of a second harmonic thereof.
Abstract:
A variable gain amplifying apparatus has an amplifier, one or more first switching elements connected in parallel to the amplifier, and a phase shifter connected in series to the first switching element. The first switching element is enabled if the level of an input signal or an output signal is higher than a predetermined level, and the first switching element is disabled if the level of the input signal or the output signal is equal to or lower than the predetermined level. The amplifier does not operate when the first switching element is enabled, and the amplifier operates when the first switching element is disabled, and the amount of phase shift when the input signal is passed through the amplifier and phase shifter is substantially equal to the amount of phase shift when the input signal is passed through the first switching element.
Abstract:
The present invention was made to solve the problem that users cannot check e-mail containing an attached image at a glance on conventional portable terminals. According to the present invention, there is provided a portable terminal that can display the e-mail text overlapped upon the attached image in an easy-to-see manner, and hence improve its usability as a mail receiving terminal. An image processing/output means converts the attached image data into image data of a size corresponding to that of the display area, and processes the attached image data to correct either of the brightness and contrast thereof. Further, a character setting/output means sets display color of the mail text according to the chromaticity of the image data so that the mail text will be overlapped upon and displayed with the set display color against the background of the processed image.