Abstract:
PROBLEM TO BE SOLVED: To simultaneously form macro holes and meso holes, using a single stage of gelation reaction. SOLUTION: This method includes a solation step for preparing an aqueous sol solution, containing tetramethoxy silane, trimethoxy (methyl) silane, a polyethylene glycol and ammonium acetate, a gelation step for heating a sol to be converted into a gel, a washing step for washing the gel with water, and a baking step for firing the gel after washed with water. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To easily measure a blood stream such as the bloodstream and bloodstream distribution in an organism, and also the bloodstream of an artery and a vein. SOLUTION: This bloodstream measuring device 1 is provided with a light source for irradiating an organism with light; a light measuring means 2 comprising a light transmitter-receiver for detecting light of a plurality of wavelength emitted from the organism; an aging effect measuring means 3 for obtaining the aging effect of a specific component included in blood from the light intensity change of a plurality of wavelength; and a bloodstream computing means 4 for computing the bloodstream from the aging effect of the specific component and the ratio of the specific component in the blood. The aging effect measuring means 3 obtains the aging effect of a plurality of wavelength components detected by the light measuring means 2, and that of the specific component in the blood obtained by computing the wavelength components. The bloodstream computing means 4 obtains the blood volume from the amount of components and the ratio of the specific component included in the blood, when the aging effect of the specific component included in the blood is stabilized, and computes the bloodstream of the artery and vein using the ratio of a pulse wave component.
Abstract:
PURPOSE:To provide an easily operable process for the determination of an amino acid sequence. CONSTITUTION:Amino acids are successively eliminated from the carboxyl terminal of a peptide fragment by carboxypeptidase treatment. The eliminated amino acid is made to react with t-RNA specific to said amino acid in the presence of an aminoacyl t-RNA synthetase and the synthesized aminoacyl t-RNA is detected to easily determine the amino acid sequence.
Abstract:
PURPOSE:To quantitatively determine DNA and RNA by subjecting a soln. consisting of two-chain DNA and single-chain RNA to a heating treatment and/or alkaline treatment and measuring the absorbance of the soln. before and after the treatment. CONSTITUTION:The heating treatment is required to be heated to the temp, where the hydrogen bond of the DNA having the two-chain structure is broken to the single-chain by heating. The heating is preferably executed in an about 93 to 100 deg.C range. The alkaline treatment may be executed under the conditions necessary for decreasing the chains of the DNA of the two chains to the single chain by the alkanline treatment. The alkaline treatment is executed at 65 to 80&oC by using NaOH, etc., normally. The wavelength suitable for the determination of necleic acid is used for measuring the absorbance and the measurement at about 260nm is exemplified. The absorbance before the treatment is usually satisfactory if it is from room temp. to about 75 deg.C. The DNA and RNA are calculated from the difference in the absorbance obtd. by the measurement before and after the treatment.
Abstract:
PURPOSE:To readily carry out deproteinization treatment in short time, by adding a bivalent heavy metal ion having chelating property to DNA-containing aqueous solution containing a protein as an impurity, heat-treating the mixture and removing the formed precipitation. CONSTITUTION:A bivalent heavy metal ion (preferably Cu Or Zn ) having cheleting property is added to a DNA-containing aqueous solution (preferably cell ground liquid) containing a protein as an impurity and the mixture is heat- treated preferably at 65-100 deg.C for several minutes and cooled to room temperature or below and precipitation formed in the above mentioned solution is treated, for example, by a density gradient method by cesium chloride accompanied by ultracentrifugation treatment, dialysis treatment or the like to remove the protein.
Abstract:
PROBLEM TO BE SOLVED: To simplify assembly of a suppressor.SOLUTION: A first electrode 13 comprises a plurality of first electrode salients 13a on a surface facing a first ion exchange membrane 5. A first resin layer 15 consisting of materials which are softer than the materials of the electrode 13 is formed at an end face of the electrode salient 13a. A space surrounded by the surface on which the electrode salient 13a of the electrode 13 is formed, a side face of the electrode salient 13a, a side face of the resin layer 15 and the ion exchange membrane 5 forms a first regenerating solution passage 3a. A second electrode 17 comprises a plurality of second electrode salients 17a on a surface facing a second ion exchange membrane 9. A second resin layer 19 consisting of materials which are softer than the materials of the electrode 17 is formed at an end face of the electrode salient 17a. A space surrounded by the surface on which the electrode salient 17a of the electrode 17 is formed, a side face of the electrode salient 17a, a side face of the resin layer 19 and the ion exchange membrane 9 forms a second regenerating solution passage 11a.
Abstract:
PROBLEM TO BE SOLVED: To provide a substrate with a satisfactory manufacture yield and suitable for use as a substrate for microscopic observation. SOLUTION: A glass plate of high surface flatness is employed in stead of natural mica so far used as a base material. A break groove is formed in advance in one surface of the glass plate of an S grade, and thereafter, a gold thin film is formed by vapor deposition on the reverse surface. A substrate for specimen observation of a scanning probe microscope or a substrate, of 10 mm square for example, suitable for a reflector for reflectance spectrum analysis, is cut out by only applying a small amount of force to the break groove by means of a pair of tweezers, etc. The substrate thus obtained is resistant to exfoliation, etc. of the gold thin film, easy to handle, excellent in durability and corrosion resistance, and free from slowly releasing humidity like mica. This substrate is used for forming a suitable specimen observation substrate, etc. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PURPOSE:To obtain an apparatus which is hardly affected by Joule heat and which can treat samples in large quantities by a method wherein a voltage is applied across the inner peripheral edge and the outer peripheral edge of a capillary disk which is provided with many capillary structures which are extended radially. CONSTITUTION:A required sample and a required reagent are poured into capillaries, capillary disks 6 which have been housed inside an electrophoretic tank 1 are then arranged in a state that they have been stacked between electrodes 3, 4, and the capillaries are immersed in an electrolyte buffer solution 2. In this state, a high voltage is applied across the electrodes 3, 4 by a high-voltage power-supply device 5, and an electrophoretic operation is started. A DNA synthesized substance in the sample is moved inside a gel, it is separated according to the magnitude or the like of its molecular weight, and a DNA band is produced. After the electrophoretic operation has been completed, every disk 6 is set in a fluorescence readout device, and the arrangement of bases in DNA is decided. Since the electrophoretic operation is treated by using many capillary structures which are installed on every disk 6 and which are extended radially, samples in large quantities can be treated, and the electrophoretic operation is hardly affected by Joule heat.
Abstract:
PURPOSE:To dispense with a complicated filter switching mechanism and to monitor plural lines with one device by branching one line to plural passages, and forming a flow cell at every passage. CONSTITUTION:One line of chemical facility is branched to the pipes 4-1 to 4-n of the plural passages, and the pipes 4-1 to 4-n are connected to the flow cells 6-1 to 6-n in a light-shielded measuring box 8, respectively. Measuring light from a light source 16 is introduced with an optical fiber 20, and is radiated in the directions of the flow cells 6-1 to 6-n. The tip of the optical fiber 20 is moved with a motor. Since detectors 34-1 to 34-n always detect incident light, when light irradiating from the tip of the optical fiber 20 traverses the flow cells 6-1 to 6-n, a traversed detector detects transmission light. The detection signal of each of the detectors 34-1 to 34-n is introduced to a data processor, and the peak detection of the signal that is the output of the detector is performed, then absorbance can be found.
Abstract:
PURPOSE:To achieve a higher detection sensitivity, by providing an orifice section at a part where a DAN sample is detected at the low end of a capillary- like migration tube. CONSTITUTION:DAN samples are placed at the upper end of migration tube 10 as labeled by fluorescent substance varied with four kinds of terminal bases. Then, a voltage of 500-1,000V is applied across the vibration tube 10 from a power source section 14, to cause an electrophoresis in the among the DAN samples 18. Here, as an orifice section 11 is irradiated with a laser light from an argon laser 2 being selected to a single wavelength with a filter 3, a fluorescent 5 is generated from the fluorescent substance as labeled for the DAN samples as the DAN samples passes the orifice section 11. The fluorescence is selected with a filter 7 to be detected with a photomultiplier tube 8 and analyzed by a CPU 16 while being displayed on a CRT 17. In this manner, a base sequence can be determined at one time by causing an electrophoresis with the labeling by fluorescent substances varied with terminal bases.