摘要:
A method for controlling the temperature gradient on the side surface of a silicon single crystal, the height of a solid-liquid interface, and the oxygen concentration in the longitudinal direction of the silicon single crystal is provided in order to manufacture a defect-free silicon single crystal whose oxygen concentration is controlled to a predetermined value rapidly and stably. By disposing a cylindrical cooler around the silicon single crystal, and adjusting the pulling speed of the silicon single crystal, the rotation speed of a crucible that stores molten silicon and the rotation speed of the silicon single crystal, and the output ratio of a multi-heater separated into at least two in the longitudinal direction of the silicon single crystal disposed around the crucible, the temperature gradient on the side surface, the height of the solid-liquid interface, and the oxygen concentration in the longitudinal direction of the silicon single crystal are controlled.
摘要:
The present invention relates to a method for manufacturing a silicon single crystal by pulling up the silicon single crystal from a molten silicon by the CZ method, comprising: a cooling step of cooling the silicon single crystal by a cooler surrounding the silicon single crystal, and a heat shield body disposed surrounding an outer side and a lower side of the cooler while the silicon single crystal is being pulled up; and an Ms adjusting step of determining, in advance, an allowable range of a pulling speed at which a silicon single crystal having few crystal defects can be obtained by adjusting a distance (referred to “Ms”) from the lower surface of the heat shield body disposed on the lower side of the cooler to the surface of the molten silicon, wherein the silicon single crystal 11 is pulled up at a pulling speed within the allowable range thus determined.
摘要:
A method for controlling the temperature gradient on the side surface of a silicon single crystal, the height of a solid-liquid interface, and the oxygen concentration in the longitudinal direction of the silicon single crystal is provided in order to manufacture a defect-free silicon single crystal whose oxygen concentration is controlled to a predetermined value rapidly and stably. By disposing a cylindrical cooler around the silicon single crystal, and adjusting the pulling speed of the silicon single crystal, the rotation speed of a crucible that stores molten silicon and the rotation speed of the silicon single crystal, and the output ratio of a multi-heater separated into at least two in the longitudinal direction of the silicon single crystal disposed around the crucible, the temperature gradient on the side surface, the height of the solid-liquid interface, and the oxygen concentration in the longitudinal direction of the silicon single crystal are controlled.
摘要:
A method for efficiently amplifying abnormal prion protein (PrPSc) derived from bovine spongiform encephalopathy (BSE) is provided. Ultimately, the invention aims at eradicating the transmission of a prion disease by detecting a BSE-infected cow early and developing a method for inactivating prions and permitting early examination of prion inactivation. Provided is a method for efficiently amplifying PrPSc derived from BSE, wherein the method is based on a PMCA (protein misfolding cyclic amplification) method in which normal prion protein (PrPC) is used as a source and PrPSc is used as a seed, and PrPSc derived from BSE is amplified by stir-mixing, incubating, and sonicating both the PrPC and the PrPSc repeatedly, and wherein the method includes performing stir-mixing-incubation-sonication in the presence of a polysaccharide sulfate.
摘要:
A luminescent product molded by centrifugal molding which is inhibited from curling and has a white layer for improving phosphorescent performance. The product comprises: a hiding layer formed from a first mixture which is a mixture of a first thermosetting resin and a pigment by subjecting the mixture to centrifugal molding with heating; a phosphorescent layer obtained from a second mixture which is a mixture of a second thermosetting resin and a phosphorescent pigment having a higher specific gravity than the second thermosetting resin by pouring the second mixture on the hiding layer and subjecting it to centrifugal molding with heating; and a transparent layer. The phosphorescent layer is located nearly at the center of the product thickness. Thus, the product can be effectively inhibited from curling.
摘要:
A storage battery includes: a bottomed metal case (10) accommodating an electrolyte and a collector (7) having a flat plate connected to one side of an electrode assembly (5) containing a strip-shaped positive electrode plate (1), a strip-shaped negative electrode plate (2), and a separator (6); a sealing plate (11) sealing upside of the bottomed metal case; and a lead terminal (9) electrically connecting the sealing plate to the collector, wherein the collector has at least one projection (13) and the collector and the lead terminal are electrically connected with each other via the projection. This construction eliminates the problem of increased contact resistance between the lead terminal and the collector and realizes a storage battery having high current discharging performance in which the contact resistance is reduced.
摘要:
The present invention relates to a method for immobilizing a protein in a sample, which could not easily be immobilized by the conventional immobilization method, to a solid-phase; a method for quantitative determination of protein wherein an effect of inhibitory substance coexisting in a sample prepared using the immobilization method can be reduced; and a rapid and highly precise method for detecting an abnormal PrP and a method for determining BSE using the immobilization method as compared with the conventional method. The present invention provides: “a method for immobilizing a protein to a solid-phase comprising contacting the protein with the solid-phase having hydrophobic surface in the presence of a lower alcohol, and a halogenocarboxylic acid and/or a long chain alkyl sulfate, and an immobilizing reagent solution to be used therefor; a method for quantitative determination of protein comprising contacting a protein-staining solution with the solid-phase immobilized with a protein by the immobilization method, and determining a degree of color development generated thereby; an immunoblotting method wherein the solid-phase immobilized with a protein by the immobilization method is used; and a method for detecting an abnormal PrP a method for determining BSE by using the immobilization method.”
摘要:
The present invention provides a semiconductor memory device including: a semiconductor substrate of a first conductivity type; and a memory cell including: (i) a columnar semiconductor portion formed on the substrate, (ii) at least two charge-storage layers formed around a periphery of the columnar semiconductor portion and divided in a direction vertical to the semiconductor substrate, and (iii) a control gate that covers at least a portion of charge-storage layers, wherein the memory cell is capable of holding two-bit or more data.
摘要:
A two-stage amplifier of a first-stage amplifier 21 and second-stage amplifiers 22 and 23 is provided. A writing mode and reproducing modes are switched in the first-stage amplifier 21 by switching a parallel circuit of a feedback capacitor Cf1w and a feedback resistor Rf1w and a parallel circuit of a feedback capacitor Cf1r and a feedback resistor Rf1r. The second-stage amplifier 23 is provided with feedback resistors Rf22 and Rf23 that are connected to each other in parallel. The feedback resistor Rf23 is connected in the feedback loop by a switch transistor QSW only when reproducing a high-reflective disk. This enables an amplifier gain to be suitably set for each of writing, low-reflective disk reproducing, and high-reflective disk reproducing. As a result, desirable reproducing characteristics can be obtained for the low-reflective disk while accommodating high-speed writing with a large laser power.