摘要:
A microdevice for performing a method for separating and purifying a nucleic acid, the microdevice comprising: at least one opening; and at least one channel for passing a sample solution, wherein the method comprises: (A) a step of bringing a nucleic acid-containing sample solution into contact with a nucleic acid-adsorbing support having a function of adsorbing a nucleic acid; (B) a step of washing the nucleic acid-adsorbing support with a washing solution in a state of a nucleic acid being adsorbed to the support; and (C) a step of desorbing the nucleic acid from the nucleic acid-adsorbing support by a recovering solution, thereby purifying the nucleic acid; an apparatus for utilizing the microdevice; and a reagent kit for use in the microdevice.
摘要:
A DNA chip or its analogue composed of nucleotide derivatives attached to a solid carrier is prepared by method of bringing nucleotide derivatives having a reactive group at each one terminal into contact with a solid carrier having thereon reactive groups in an aqueous phase in the presence of a transferase which is capable of producing a covalent bond by rearrangement of the reactive group of the nucleotide derivative and the reactive group of the solid carrier.
摘要:
An automotive brake system comprises a sump fluidly disposed in a housing, constructing a brake unit, and in the middle of a suction circuit of a pressure apply device including at least a pressure apply pump. During vehicle dynamics control or during vehicle stability control, the pressure apply rapidly sucks the brake fluid stored in the sump and quickly performs a pressure apply action, irrespective of the distance between the brake unit and a brake-fluid source. This ensures a smooth brake-fluid supply to the suction circuit of a return pump returning the brake fluid from the wheel-brake cylinder to the brake circuit upstream of a fluid-pressure control valve unit.
摘要:
Disclosed are chemical agents with unexpected activity to inhibit the interactions between human immunoglobulin E (IgE) and its receptor (Fc.epsilon.RI) which interactions are known to be involved in triggering allergic responses. The agents may be used to module the allergic response in the treatment of various clinical conditions, including rhinitis, asthma, urticaria, atopic dermatitis, and anaphylacric shock. The agents can be formulated for oral, topical or parenteral administration.
摘要:
A brake-fluid reflux type anti-skid brake control system for an automotive vehicle, comprises a main brake-fluid line fluidly disposed between a master cylinder and a wheel cylinder for supplying a brake fluid from the master cylinder to the wheel cylinder during usual braking, a brake-fluid reflux line arranged in parallel with the main line for returning the brake fluid from the wheel cylinder to the master cylinder side during operation of the system, directional control valves arranged for controlling the respective fluid flow in the main brake-fluid line and in the reflux line, depending upon a skidding condition of a vehicle wheel, and a plunger type control valve arranged between the outlet port of the master cylinder and an upstream junction of the main line and the reflux line. The control valve is responsive to a fluid pressure representing whether the anti-skid brake control system is in an operative state or in an inoperative state, in a manner so as to provide a constricted brake-fluid flow therethrough to the wheel cylinder in the operative state of the system and to provide a full brake-fluid flow therethrough to the wheel cylinder in the inoperative state of the system.
摘要:
A downhole tool, configured to be suspended in a borehole traversing an earth formation, includes a downhole data acquisition system placed in the tool body and electrically connected to an electric power generator at the formation surface. The downhole data acquisition system includes a sensor for detecting local conditions in the borehole, and a transducer for transducing the voltage of an input signal from high to low or low to high. The transducer having a gallium nitride or silicon carbide based discrete semiconductor device.
摘要:
A liquid filtering instrument 10 according to the present invention achieves filtered liquid by pressure-reduced filtration, and it comprises a filter member 12 in which a liquid filter 15 is accommodated, and a holder member 14 for stocking filtered liquid passed through the liquid filter 15, wherein the filter member 12 and the holder member 14 are formed in capable of being fitted so as to be kept substantially air-tight and water-tight under pressure reduced state.
摘要:
A downhole tool, configured to be suspended in a borehole traversing an earth formation, includes a downhole data acquisition system placed in the tool body and electrically connected to an electric power generator at the formation surface. The downhole data acquisition system includes a sensor for detecting local conditions in the borehole, and a transducer for transducing the voltage of an input signal from high to low or low to high. The transducer having a gallium nitride or silicon carbide based discrete semiconductor device.
摘要:
Revolving rollers, each provided on an outer peripheral surface thereof with revolving roller grooves extending therearound, are caused to mesh with a rack rod thread of a central rack rod with an axial angle over a lead angle of the rack rod thread and arranged for rotation on a holder member to be twisted. The holder member is rotated round the rack rod by a motor to translate the rack rod. A large thrust can be generated while ensuring a high reliability since a high efficiency is achieved by realizing rolling contact in set points of mesh of the rack rod thread and the revolving roller grooves, points of mesh are made planar, and interference in other points than the points of mesh can be suppressed. Also, play can be restricted by assembling the revolving rollers to the rack rod thread while applying torque in a direction, in which the axial angle is increased.
摘要:
A liquid filtering instrument 10 according to the present invention achieves filtered liquid by pressure-reduced filtration, and it comprises a filter member 12 in which a liquid filter 15 is accommodated, and a holder member 14 for stocking filtered liquid passed through the liquid filter 15, wherein the filter member 12 and the holder member 14 are formed in capable of being fitted so as to be kept substantially air-tight and water-tight under pressure reduced state.