摘要:
A piezoelectric ceramic composition is composed of a main component represented by the general formula (Ca1-xM1x)Bi4Ti4O15 wherein M1 is one of divalent metals other than Ca and trivalent metals other than Bi, and 0
摘要:
Provided is a piezoelectric ceramic composition containing a lead titanate which has excellent temperature stability of the resonance frequency, and is suitable for application in a filter, a vibrator or the like, and a piezoelectric element using the piezoelectric ceramic composition. A piezoelectric substrate comprising a ceramic material containing PbTiO.sub.3 is provided with vibrating electrodes on the front and rear surfaces. The ceramic material containing PbTiO.sub.3 contains not less than about 0.1% by weight or more than about 3.0% by weight of Mn based on MnCO.sub.3 as the subcomponent in the main component having a composition satisfying 0.02.ltoreq.x.ltoreq.0.16 and 0.15.ltoreq.y.ltoreq.0.50 of the general formula Pb.sub.1-1.5x Nd.sub.x [(In.sub.1/2 Nb.sub.1/2).sub.y Ti.sub.1-y ]O.sub.3.
摘要翻译:本发明提供一种压电陶瓷组合物,其含有具有优异的共振频率的温度稳定性的钛酸铅,适用于过滤器,振动器等,以及使用该压电陶瓷组合物的压电元件。 包含含有PbTiO 3的陶瓷材料的压电基板在前表面和后表面上设置有振动电极。 含有PbTiO 3的陶瓷材料含有不低于约0.1重量%或大于约3.0重量%的Mn,以MnCO3为主成分的副成分,其组成满足0.02≤x≤0.16且0.15 < 通式为Pb1-1.5xNdx [(In + E,fra 1/2 + EE Nb + E,fra 1/2 + EE)yTi1-y] O3的/=y=0.50。
摘要:
A document management device includes a database for storing and managing document data, a document retrieving device for retrieving the document data from the database, a document display for displaying at least one document data retrieved by the document retrieving device, and a format storage device for storing at least one evaluation format each of which has an identifier and a plurality of definitions of evaluation attributes. The evaluation format specifies the structure of evaluation data representing evaluation for the document data. A document selecting device allows for selection of one document data among the document data displayed, and a format selecting device allows for selection of one of the evaluation formats. An attribute value input device allows for inputting attribute values which are the result of evaluation for the document data selected by the document selecting device from the viewpoint represented by the evaluation attributes defined in the evaluation format. An evaluation data storage device is provided for storing the evaluation data which is a combination of the identifier of the evaluation format and attribute values inputted by the attribute value input device for the evaluation attributes defined by the evaluation format. A binding information creating device creates binding information which binds the document data selected by the document selecting device with the evaluation data stored in the evaluation data storage device. A binding information storage device stores the binding information.
摘要:
There is provided a piezoelectric ceramic having a small mechanical factor of merit Qm and excellent heat-resisting properties, e.g., a piezoelectric ceramic for filter elements which is compatible with surface mounting and a method of manufacturing the same in a large amount and in a stable manner. There is provided a piezoelectric ceramic which is a composite oxide of at least lead, zirconium and titanium, wherein an oxide of manganese exists in a grain boundary layer in a density higher than that in a crystal grain of the piezoelectric ceramic and a glass phase exists in the grain boundary layer. It is manufactured by depositing a manganese compound and a glass material on the surface of a piezoelectric ceramic comprising a composite oxide of at least lead, zirconium and titanium and by performing thermal processing thereafter to diffuse the deposited substance in a grain boundary portion of the piezoelectric ceramic.
摘要:
A work environment is expressed as an information unit set (Snap), a data object or the like to be used in the work environment is expressed as an information unit (Mediator), a plurality of information unit sets are collected into a Place and are stored in Places into an information unit set hold history storage part 3, and an information unit set to be used in a current work environment is held by an information unit set hold part 14. If a given condition such as the change of a work or the like is prepared, then the information unit set held by the information unit set hold part 14 is stored into the information unit set hold history storage part 3 by a storage instruct part 7, and selection information such as the name of a work and the like is applied to the thus stored information unit set. If a certain piece of selection information is input from a user in order that a certain information unit set can be selected and used in a current work environment, then an information unit set select part 4 uses the thus input select information to select an information unit set corresponding to the present select information from the information unit set hold history storage part 3, and the present information unit set is then read out into the information unit set hold part 14 by an information unit set read part 5.
摘要:
A workspace management section collects resources related to a job and manages them as a workspace separately from resource management of a primary resource management section. The workspace has resource administration information as job relevant information, area information on a display screen, a base image, etc. A program can define the area information together with areas on the screen. A workspace display section superposes icons corresponding to the resources on the base image for display. The icons can be moved by a resource placement section. When an icon is moved to a different area, a job support processing execution section executes a program defined corresponding to the area to which the icon is moved, whereby different meanings can be imparted to the same resource depending on the area in which the corresponding icon is placed.
摘要:
Light-transmissive ceramics are disclosed composed of a plurality of oxides each having a negative standard Gibbs energy of formation (.DELTA.Gf.sup.0) with an absolute value greater than 1581.9 KJ/mol. The light-transmissive ceramics are produced by subjecting the oxides to hot isostatic pressing at a high temperature under a high pressure after they have been subjected to primary sintering. The light-transmissive ceramics of Al.sub.2 O.sub.3 /La.sub.2 O.sub.3 are of a composite structure with particles of La.sub.2 O.sub.3 being present between particles of Al.sub.2 O.sub.3, rather than Al.sub.2 O.sub.3 and La.sub.2 O.sub.3 forming a solid solution. In the composite structure, the particles of La.sub.2 O.sub.3 have sizes that are 1/3 to 1/30 of the particles of Al.sub.2 O.sub.3. Maximum size particles of Al.sub.2 O.sub.3 have a longer axis of 30 .mu.m or less and a shorter axis of 20 .mu.m or less, and maximum size particles of La.sub.2 O.sub.3 or the like have a longer axis of 10 .mu.m or less and a shorter axis of 5 .mu.m or less. Before an a molded ceramics body is fully fired, it may be processed by a chelating agent, and perhaps also with hydrofluoric acid, to remove impurities therefrom for improving characteristics of the light-transmissive ceramics.
摘要:
Piezoelectric ceramics whose mechanical quality factor Qm is small and which has an excellent heat resistance, e.g. piezoelectric ceramics for filtering elements whose group delay time characteristic is flat, phase distortion is small and which can be accommodated to surface mounting, and a method for stably producing it are provided. Manganese oxide and lead oxide are caused to coexist in high concentration in grain boundary parts of the piezoelectric ceramics containing composite oxides of at least lead, zirconium and titanium as compared to intra-crystal grains of the piezoelectric ceramics. It is manufactured by treating the piezoelectric ceramics by heat after adhering manganese and lead compounds on the surface thereof to diffuse the oxides in the grain boundary parts of the piezoelectric ceramics.
摘要:
A compact image karaoke device with only a small number of image disks which provides the impression of having a great many background images. Two players are provided for reading background images from image disks. Background images are selected from at least one image unit group corresponding to at least one image genre corresponding to selected song genre and are read by the two players and changed at random, for example, every 30 seconds. By editing the display of background images in this manner, a great number of background image series can be obtained for combinations of the background images. Images obtained and displayed corresponding particularly to the starting portion of the song are provided only on the number of images available. Therefore, even if a great number of songs are consecutively selected, a user will not feel as though the same images are being repeatedly shown.
摘要:
The present invention relates to a method and apparatus for laminating two webs of corrugating medium to produce a composite corrugating medium for the manufacture of corrugated fiberboard. The method essentially consists of the steps of (a) applying a coat of a water-soluble adhesive onto one side of at least one web of a first and second corrugating medium; (b) conveying the first and second corrugating medium over the surface of a first heating cylinder such that the water-soluble adhesive is between the first and second corrugating medium to join them together into a loosely bound composite corrugating medium, wherein heat is applied to one surface of said composite corrugating medium through the first heating cylinder; and (c) passing the opposite surface of the composite corrugating medium to a second heating cylinder to subject the composite to a second heating step. The present invention contemplates an apparatus for carrying out this invention.