摘要:
An over-current protection device is constituted of a current detection unit for detecting a current from a power-supply source to a load having a magnetism detection element with a magnetic impedance (MI) effect, an AC-current supply device for supplying an AC current to the detection element, a bias-current supply device for supplying a bias current to a bias coil, a peak detection device for detecting a peak of impedance of the magnetism detection element as a variation of voltage, and a switch corresponding to a phase for selecting an output of the peak detection device. In the current detection unit, a holding device for holding a switch output and an amplifier are disposed in common for detecting the current in each phase, thereby expanding a current detectable range and reducing power consumption and cost.
摘要:
Disclosed is a material for sustained chemical-release in vivo, which comprises a hydroxyapatite/collagen (HAp/Col) nanocomposite formed as a coprecipitate, and a chemical consisting at least one of a drug and a bioactive substance including a growth factor and a DNA enzyme. The hydroxyapatite (HAp) has a specific surface area in the range of 50 to 300 m2/g. The hydroxyapatite (HAp) and the collagen (Col) are combined in such a manner that the crystals of the hydroxyapatite (HAp) are oriented in the C-axis direction around the fibers of the collagen (Col). The chemical is carried on the surface of the hydroxyapatite (HAp), the surface of the collagen (Col) and in a hydrated water of the hydroxyapatite (HAp) and the collagen (Col). The sustained chemical-release material can be prepared in the form of a bioabsorbable capsule, or in the form of allowing in vivo administration by injection and in-vivo gelation after said administration.
摘要:
A method for growing a single crystal of cubic boron nitride semiconductor in a growing container sealed under high pressure and high temperature conditions, which comprises dissolving in a dopant-containing boron nitride solvent a boron nitride starting material placed at a high temperature zone in the growing container, and providing a temperature gradient to the solvent so that the temperature dependence of the solubility is utilized to let the single crystal form and grow at a low temperature zone in the growing container.
摘要:
A microwave heating apparatus has a heating chamber in which an object is to be heated both dielectrically by microwave and by radiant energy. A microwave generator for generating microwaves is disposed above the heating chamber, and a radiant energy heater is located within the heating chamber. A rectangular wave guide extends between the generator and an opening in the chamber for guiding the microwaves generated by the generator into the heating chamber from above, the wave guide being bent generally in the shape of the letter Z and the portion of the wave guide other than the portion adjacent the opening into said heating chamber being spaced from the walls of the heating chamber. Thermal insulation is provided between the chamber and the portion of the wave guide spaced from the walls of the chamber.
摘要:
An improved choke seal arrangement, in a microwave oven, in which a slit structure is provided to prevent leakage of microwave energy around the periphery of the door. The slit structure, which has been provided in one of the walls defining the choke cavity in the prior art choke seal arrangement, is provided in a door wall portion spaced apart from the choke cavity so as to facilitate mechanical formation of the choke cavity and also to prevent deformation of the choke cavity wall during use. The choke seal arrangement permits the gap between the wall of the choke cavity and the confronting inner wall of the heating chamber to be smaller than hitherto, and the microwave seal performance further improved.
摘要:
An improved high frequency heating apparatus of a type having a drawer-type door assembly together with a turn-table driven from the exterior of a heating chamber and also a support shelf therefor, which is so arranged that the stroke of the door assembly for closing and opening may be set irrespective of depth of the heating chamber, with the positional relation between the turn-table and bottom wall of the heating chamber being accurately maintained during driving of the turn-table.
摘要:
A high requency heating apparatus including a door assembly having a high frequency energy shielding member and a plurality of glass plate members disposed in front and on the outer side of the shielding member. The distances between the shielding member and plurality of glass plate members are such that a composite-impedance Z.sub.T made up of the impedance of the shielding member, the impedance of the glass plate members and the impedance of the space around the heating apparatus becomes approximately equal to or smaller than the composite impedance Z.sub.s made up of the impedance of the shielding member and the impedance of the external space in the absence of the glass plate member for reducing microwave leakage at the front portion of the door assembly.
摘要:
A microwave oven is equipped with a rotary table driven by magnetic coupling. The microwave oven has a heating chamber in which at least its bottom wall or base plate is made of a non-magnetic metallic material, while its other walls are formed of metallic material other than non-magnetic metallic material, for reduction of the cost of the microwave oven. The junctions between the wall of non-magnetic metallic material and the walls of metallic material other than non-magnetic metallic material are coated with coating film to improve corrosion resistance. Furthermore, the heating chamber together with the rotary table is so arranged as to facilitate insertion and withdrawal of a container of food material into and from the heating chamber to provide a microwave oven which is clean and convenient to use.
摘要:
A microwave oven has an oven-defining housing structure having an electric lamp used to illuminate the interior of the oven-defining housing structure, that is, a heating chamber. The oven-defining housing structure has a control panel at the front thereof, which control panel includes one or more signaling windows or indicators to be illuminated, for example, one signaling window representing, when illuminated, that the high frequency wave generator is in position to generate a low radiating energy into the heating chamber and the other signaling window representing, when illuminated, that the high frequency wave generator is being operated. These signaling windows are respectively illuminated by portions of rays of light emitted by the oven lamp by means of light transmitters. Respective shutter mechanisms are provided for controlling passage of the light rays from the oven lamp towards the signaling windows so that the latter can be illuminated at required times.
摘要:
A microwave oven with an improved electric field distribution in the oven is provided. By properly establishing the position of a high frequency oscillator when it is directly affixed to a heating cavity or the position of a feeding opening when the feed through a wave guide is employed, with respect to the dimension of the heating cavity, the electric field distribution is improved and the efficiency is enhanced.