Abstract: A software program enables to maintain the amount of task by the operator for image processing regardless of the number of image pages. By displaying the combined overlapped image, the operator is able to visually confirm a processing area or range for a predetermined image processing. Because of the above described features, the operator is able to easily specify the tasks such as removing, moving and inserting an image in the selected area in an assured manner without significant experience or knowledge of computer programs.

Abstract: To facilitate the use of portable digital devices such as cell phones, printer processing stations are proposed for printing the information that is accessible through the portable digital devices. In general, the portable digital devices have easy access to an enormous amount of information but are equipped with a relatively small display screen without an on-board printing capability. To solve the above dilemma, readily available printer stations allow the user to print a selectable portion of the information at one of the predetermined locations and conveniently charge the user for a print fee.

Abstract: The present invention is to provide a production method of silicon carbide particles of high quality without generating a sulfur compound in the carbonizing and baking processes. More concretely, a production method of silicon carbide particles comprising a step of mixing at least one kind of a silicon compound, which is liquid at ordinary temperatures, an organic compound having a functional group, which generates carbon by heating and is liquid at ordinary temperatures, and a polymerization or crosslinking catalyst, which can homogeneously dissolve with the organic compound to obtain a mixture, a step of homogeneously solidifying the mixture to obtain solid matter, and a step of heating and baking the solid matter in a non-oxidizing atmosphere, wherein the catalyst is a compound consisting of carbon atoms, hydrogen atoms and oxygen atoms, and has a carboxyl group.

Abstract: A process for producing high purity silicon carbide uses a high purity tetraethoxysilane or the like as the silicon source and a novolak-type phenol resin or the like as the carbon source. The process comprises a step of forming silicon carbide in which silicon carbide powder is prepared by calcining a mixture of these sources in a non-oxidizing atmosphere, and a step of post-treating silicon carbide in which the silicon carbide powder thus obtained is treated by heating at a temperature of 2000.degree. to 2100.degree. C. for 5 to 20 minutes at least once while the silicon carbide powder is kept at a temperature of 1700.degree. or higher to lower than 2000.degree. C., to obtain silicon carbide powder having an average particle diameter of 10 to 500 .mu.m and a content of impurity elements of 0.5 ppm or less. The high purity silicon carbide powder is advantageously used as a material for producing an excellent silicon carbide single crystal having a decreased number of crystal defects.

Abstract: A process for the preparation of aromatic hydroxycarboxylic acids by reacting alkali metal salts of phenol with carbon dioxide in organic phosphine oxides containing straight or branched alkyl groups having from 1 to 8 carbon atoms and phenyl groups.

Abstract: A method of creating a dictionary for character recognition uses a document on which identical characters are aligned in a scanning direction and a mark indicating a size of a character line including the characters is positioned in the vicinity of the aligned characters. An image processing is carried out for dot patterns of the aligned characters, and one dot pattern to be registered in a dictionary is produced. Then, the produced dot pattern is registered in a dictionary together with a corresponding character code data.

Abstract: An ISDN remote switching unit for accommodating analogue telephone subscriber lines and ISDN digital subscriber lines comprises at least one signal converter for each of the conventional analogue subscriber so that a line signal, an address signal and tone signal of each conventional analogue subscriber are converted into a signaling system of the ISDN digital subscribers line, and a traffic concentrator connected to the signal converter and disposed remote from a host exchange station, whereby the signaling system between the remote station and the host station is unified for both the analogue telephone subscriber and the ISDN digital subscriber.

Abstract: An integrated service network ("ISDN") is structured to connect subscriber lines through a packet switching system to incoming or outgoing packet switching calls without passing them through a circuit switching system. This effectively uses the speech path of the circuit switching section instead of using it for packet switching calls. At the same time, the invention minimizes the influence of the introduction of the ISDN upon the software of the circuit switching section. The ISDN digital switching network applies to circuit switching calls which are switched at a local switch and to packet switching calls which are to be switched at a toll switch.

Abstract: An absorption profile indicative of a relation in atomic absorption spectroscopy between the absorbance of a desired element and time has a constant half-width independent of the concentration of the desired element in a sample, and hence the half-width of absorption profile with respect to the desired element can be previously determined from data which is obtained by the measurement of a standard sample. In an atomic absorption spectrophotometer herein disclosed, the half-width of absorption profile is previously determined in the above-mentioned manner, and the true peak value of an absorption profile obtained by measuring a sample which contains the desired element at a high concentration, is calculated using the time width of this absorption profile at a predetermined absorbance and the previously-determined half-width.

Abstract: This invention relates to a process for preparing acetic acid from carbon noxide gas and hydrogen gas, which process comprises catalytically reacting carbon monoxide gas and hydrogen gas under elevated pressures and in a liquid medium containing a ruthenium compound, cobalt compound and promoter(s).

Abstract: A clock can be used as a wall clock, as a desk clock or in some other using style. A clock unit is rotatably supported by a case, and a back plate is rotatably hinged to the case.

Abstract: A process for producing an .alpha.,.beta.-unsaturated carboxylic acid or esters thereof which comprises bringing an .alpha.-hydroxycarboxylic acid amide into contact with a solid acid catalyst independently or along with water, or along with water and an aliphatic alcohol, or along with an aliphatic alcohol.

Abstract: An improved process for converting acrylonitrile to the corresponding amide by hydrating said nitrile in the presence of a metallic copper catalyst and aluminum nitrate as promoter for said catalyst.

Abstract: A method of purifying an aqueous solution of acrylamide, which has been formed by reacting acrylonitrile with water in the presences of the metallic copper catalyst, and which contains cuprous ions, comprising treating said aqueous solution in a reaction zone which is substantially free of an oxygen containing gas or liquid.