摘要:
A loudspeaker diaphragm comprising a molded, sintered ceramic body is described. The body is made of ceramic crystalline particles whose maximum size is below 1/5 time a thickness of the body which is in the form of a dome or cone. The dome- or cone-shaped diaphragm may have a flange along an opening side thereof in order to prevent deformation as may occur during firing.
摘要:
The object of the present invention is to provide a construction and coating composition that effectively utilizes vermiculite as a natural resource and is able to satisfy requirements for humidity control and/or deodorizing as well as an attractive appearance, while also offering superior balance between the amount and rates of moisture absorption and release, in particular. This object is achieved by a composition in which non-expanded vermiculite is blended into a base material so that the blended amount is 5-70 wt % of the total composition (solid portion). In addition, the above construction material can be converted into soil by crushing when it has become a waste construction material.
摘要:
The invention provides an drive coil protection apparatus and method and a printer incorporating the apparatus. A rank memory stores a preset rank value associated with a reference drive coil in the print head of a printer. The preset rank value characterizes inherent deviations associated with the reference drive coil. The deviations result from manufacturing process, etc. A judgment value memory stores a plurality of sets of mode judgment values. Each set of mode judgment values corresponds to a particular rank value. Each mode judgment value represents a threshold value for determining the thermal condition of the print head and for selecting an appropriate operating mode for the print head. A head information detector detects the voltage drop across the reference drive coil to measure the change in the resistance of the reference drive coil. The voltage drop is digitized for accuracy measurement. The change in temperature of the reference drive coil can thus be determined. An operating mode selection circuit compares the digitized voltage drop with a particular set of mode judgment values in the judgment value memory corresponding to the preset rank value. Then, the operating mode selection circuit selects a suitable operating mode for the print head in accordance with the comparison. Thus, burnout of the print head can be prevented without reducing the operating efficiency of the printer.
摘要:
The object of the present invention is to provide a construction and coating composition that effectively utilizes vermiculite as a natural resource and is able to satisfy requirements for humidity control and/or deodorizing as well as an attractive appearance, while also offering superior balance between the amount and rates of moisture absorption and release, in particular. This object is achieved by a composition in which non-expanded vermiculite is blended into a base material so that the blended amount is 5-70 wt % of the total composition (solid portion). In addition, the above construction material can be converted into soil by crushing when it has become a waste construction material.
摘要:
A stepping motor includes (a) a rotor being driven by exciting a driving coil, (b) a position detector including a magnetic flux generator for outputting a signal in the same phase as a polarity position of a magnet mounted to the rotor and a magnetic sensor receiving magnetic force from the magnetic flux generator, (c) a controller for controlling the stepping motor responsive to a position detection signal supplied from the position detector, (d) a board on which the magnetic sensor and the controller are mounted, and (e) a sensor cover for positioning the magnetic sensor, dissipating heat of the controller and for covering at least a part of the position detector and the controller. This structure allows the controller and the magnetic sensor to avoid the heat generated by the stepping motor. This structure also allows to assemble a motor sub-assembly including the driving coil, the rotor and the magnetic flux generator independently of and separately from a sensor sub-assembly including the board and the sensor cover. Thus the productivity increases and material loss decreases.
摘要:
In an antenna for communicating an electromagnetic wave, a first converger converges the electromagnetic wave. A second converger faces the first converger and includes a conductor plate having a through hole, into which a magnetic flux of the converged electromagnetic wave is converged. The through hole is formed at a center portion of the conductor plate so as to have a size which is sufficiently smaller than a wavelength of the electromagnetic wave. The conductor plate is formed with a cutout extending from a part of the through hole to an outer periphery of the conductor plate. A converter faces the through hole of the conductor plate to convert the converged magnetic flux into voltage.
摘要:
The specification discloses a monoclonal antibody capable of distinguishing human hepato-carcinoma cells, a hybridoma producing said monoclonal antibody and a process for preparing the monoclonal antibody using said hybridoma. The monoclonal antibody of the invention specifically attackes hepato-carcinoma cells in vivo.
摘要:
A method for molding a thermosetting resin pipe having a balanced compressive strength between the axial direction and the direction normal to the pipe axis is disclosed. The method includes steps of molding a thermosetting resin in a smooth zone in the front section of a screw to such an extent that the resin after being extruded from the cylinder is capable of retaining its own shape, and orienting the resin and/or a fibrous filler randomly. An apparatus for producing such a thermosetting resin, and a thermosetting resin having a balanced compressive strength are also disclosed.
摘要:
A filler for filling in defects or hollow portions of bones to coalesce with the bone tissues is provided which comprises powders of a calcium phosphate compound having the apatite crystalline structure of each crystal grain size of from 50 .orgate. to 10 microns and represented by the following general formula of Ca.sub.m (PO.sub.4).sub.n OH (1.33.ltoreq.m/n.ltoreq.1.95); and said powders being adapted for filling in a fluidized or plasticized state. A method of treating a bone with the filler is also provided wherein at least a portion of said filler is filled in to reach the bone-marrow cavity of said bone.
摘要翻译:提供了用于填充骨骼的缺陷或中空部分以与骨组织聚结的填充物,其包含磷酸钙化合物的粉末,其具有每个晶粒尺寸为50微米至约10微米的磷灰石晶体结构,并由以下通用 凸轮(PO4)nOH(1.33≤m/ n <1.95)的配方; 并且所述粉末适于填充流化或塑化状态。 还提供了用填料处理骨的方法,其中至少一部分所述填料被填充以到达所述骨的骨髓腔。
摘要:
Diaminomaleonitrile which is produced by the tetramerization of hydrogen cyanide is purified by heating a crude diaminomaleonitrile in an inert liquid or in an inert atmosphere at a temperature of 90.degree. to 140.degree. C, preferably 100.degree. to 120.degree. C, and then extracting pure diaminomaleonitrile having a purity of about 99% from said heated crude diaminomaleonitrile with a solvent.