Abstract: A process for producing a halogen-containing phosphate ester includes the steps of: (i) reacting a phosphorus halide selected from the group consisting of phosphorus oxyhalides and phosphorus pentahalides with a halogen-containing hydroxy compound to obtain a reaction mixture including a halogen-containing phosphate ester, (ii) purifying the halogen-containing phosphate ester by adding an aqueous medium selected from the group consisting of water, neutral aqueous solutions, acidic aqueous solutions and basic aqueous solutions to the reaction mixture to crystallize the halogen-containing phosphate ester, and (iii) distilling waste water from the purification step.

Abstract: A process for preparing an ester compound comprising reacting a halogen-substituted aliphatic hydroxy compound or aromatic hydroxy compound with a phosphorus oxyhalide or phosphorus pentahalide in the presence of 0.005 to 10 mol % of a phosphorus trihalide with respect to the hydroxy compound to obtain a phosphoric ester compound. Phosphoric ester compounds of high purity containing less coloring components can be prepared without using an antioxidant.

Abstract: A power-driven hammer drill 1 includes a rotary lever 8 for transmitting and disabling the transmission of the rotation of a motor 5 to a tool bit 4 and a slide lever 9 for transmitting and disabling the transmission of hammer blows to the tool bit 4. The rotary lever 8 is formed with a chamfer 52, whereas the slide lever 9 is formed with a straight portion 54 and a cut-out 53 which conforms to the circular edge of the rotary lever 8. When the slide lever 9 is in the lowermost position with the rotary lever 8 fitted in the cut-out 53, the rotary lever 8 is in the position to disconnect the rotation of the motor 5 to the tool bit 4, and while in this position, the slide lever 9 cannot be slid to its uppermost position, in which hammer blows cannot be transmitted to the tool bit 4.

Abstract: After a sample stage moves and brings a sample titer plate toward and into contact with a capillary array end, a high voltage is applied across electrodes for a prescribed time for injecting samples. Thereafter an electrophoresis reservoir comes into contact with the capillary array end, for starting electrophoresis. When electrophoresed/separated DNA fragments pass through a detection part, an excitation/photoreceiving optical system is scanned so that photomultipliers detect fluorescence from four types of fluorescent materials labeling the samples. The excitation/photoreceiving optical system comprises an epi-optical system and a confocal optical system, and is scanned at a high speed.

Abstract: A base plate is made of an insulating material, and comprised of a flat surface and a connector part connected therewith. A plurality of wells are vertically and transversely arranged on the surface of the base plate at regular intervals respectively, and the respective wells are provided with individual electrode patterns reaching the connector part from bottoms thereof through the surface of the base plate. The connector part is connected to an external high-voltage application part.

Abstract: A method of analyzing the operation of a semiconductor device by solving simultaneous equations consisting of electron- and hole-transport equations and Poisson's equation, by means of a computer, thereby to accomplish the modeling of the semiconductor device. The method comprises the steps of: rewriting simultaneous equations to the following equations (a), (b), (c) containing artificial time differential terms dp/dt, dn/dt, d.psi./dt and sensitivity coefficients .lambda.p, .lambda.n, and .lambda..psi.:dp/dt=-.lambda..sub.p f.sub.p (a)dn/dt=.lambda..sub.n f.sub.n (b)d.psi./dt=.lambda..sub..psi. f.sub..psi. ( c)determining meshpoints (M,N) of the semiconductor device, and imparting spatial position dependency, which is appropriate for the physical properties of the semiconductor device, to the sensitivity coefficients .lambda..sub.p, .lambda..sub.n, and .lambda..sub..psi., thereby transforming equations (a), (b) and (c) to the following equations (d), (e) and (f):dp(M,N)/dt=-.lambda..sub.p (M,N)f.sub.

Abstract: A process for purifying a phosphoric ester, which comprises treating a crude phosphoric ester with an epoxy compound, heating the resultant in the presence of water, washing the resultant with water, and removing the residual water. The obtained phosphoric esters have low acid value and are excellent in physical properties such as heat resistance, resistance to hydrolysis and storage stability, and are useful as plasticizers and/or flame-retardants.

Abstract: The present invention is directed to a simultaneous multiple chemical synthesizer comprising a number of reaction vessels wherein each vessel has a filter in the bottom portion thereof, a number of needles wherein each needle is connected to an aspiration injection line of a reaction mixture and a gas supply line in connection with each reaction vessel and each needle does not touch the resin contained in the reaction vessel, a number of arms which are horizontally and vertically movable and hold the respective needles, a bubbling gas line and a waste discharge line in connection with each reaction vessel, wherein each line is connected to the bottom portion of each reaction vessel, a number of purging means which move synchronously with said waste discharge lines, and means for washing the portions of the needles and purge means which contact with the reaction reagents.

Abstract: In a graphic display processing method, a surface to be displayed is regarded as an aggregation of rectangular meshes, a painting function of a graphic terminal is performed on mesh strips from the one farthest from a viewpoint to the one closest to the viewpoint, and the meshes are displayed and hidden-line processed to eliminate hidden-lines from the image. The twist state of each mesh and the twist between two adjacent meshes are determined. A plurality of twist-free meshes are painted as a group.

Abstract: In connection with an automated peptide synthesizer, an apparatus and associated method through which peptides produced in simultaneous multiple synthesis are together isolable. Cleavage to liberate the peptides from linkage to the support matrix of the solid phase is carried out in the same vessels in which the synthesizing reactions took place. Prior to cleavage, a drainage port of each reaction vessel is closed off by a cap. The reaction vessel is inserted into a centrifuge tube, which in turn is put into a rack supporting a number of tubes equal to the number of channels of the peptide synthesizing apparatus. After the peptides are cleaved and dissolved into cleaving solution added into each of the reaction vessels, the caps are removed from the drainage ports of each reaction vessel, and the vessel is returned into the centrifuge tube. A plastic jet-fitting attached to the nozzle tip of a blow unit pressure gun is inserted into and pressed into contact against the supply opening of the reaction vessel.

Abstract: In an automated solid-phase peptide synthesizing apparatus comprising at least one reaction vessel containing particulate resin as an insoluble support matrix which anchors elongating peptide chains yielded through coupling-assembly formation of peptide bonds, mixing agitation of reagents, as well as circulation agitation of washing solvents flushing the coupling-associated reaction solutions, introduced in peptide chain-assembly process steps into the reaction vessel, is effected by the bubbling of an inert gas forcibly passed through the reagents or washing solvent via a drainage port of the reaction vessel, in order to promote peptide synthesis. A removable agitation stabilizer is inserted into the reaction vessel as a barrier for inhibiting extra-vessel escape, due to action of the bubbling inert gas, of the reagents as well as the washing solvents, and of the support matrix anchoring the elongating peptide chains.

Abstract: A method of computing an internal potential distribution of a semiconductor device is disclosed which includes an electrically floating semiconductor layer as a floating potential region, thereby evaluating the breakdown voltage characteristic of the device by means of simulation. According to this method, when a trial value of a quasi-Fermi potential of the semiconductor layer is given, a Poisson equation is solved with use of the trial value, thus finding the potential distribution of the device. A characteristic point is obtained from the potential distribution. It is determined whether or not the relationship between the characteristic point and the trial value satisfies a specific relational expression. If the specific relational expression is satisfied, the trial value is determined to be the quasi-Fermi potential of the semiconductor layer, and the solution of the Poisson equation is output as a simulation calculation result.

Abstract: A water-in-oil type emulsified composition containing a water-swellable clay mineral, a nonionic surfactant, an oil component, and water as the essential constituents or containing a water-swellable clay mineral, a quaternary ammonium salt type cationic surfactant, one or two more kinds of polyoxyalkylene modified organopolysiloxane, an aqueous phase, and an oil phase containing one or two or more kinds of organic silicone resin comprising the units of the formula:RnSiO.sub.(4-n)/2wherein R is a hydrocarbon group having 1 to 6 carbon atoms or a phenyl group, and n represents a value of 1.0 to 1.8, and a water- and polyhydric alcohol-in-oil type emulsified composition containing an oil phase containing a polyoxyalkylene modified organopolysiloxane, a water-swellable clay mineral, a quaternary ammonium salt type cationic surfactant and a silicone oil, water, and a polyhydric alcohol.

Abstract: The heat source apparatus is positioned at an outer peripheral portion of a rotative drum and an upper portion of an inhale port member of a drum supporting member for supporting the rotative drum. The heater of the heat source apparatus is positioned at an axial direction of a rotational axis of the rotative drum within a heater case. The heat source apparatus is installed at an upper corner portion of an outer frame with a heater case supporting member. The heat source apparatus and the inhale port of the drum supporting member are communicated with a C-shaped form duct. The apparatus offers the advantage that the back flow and the accumulation of the lint etc. generated from the clothes in the rotative drum to the heat source apparatus can be prevented.

Abstract: Under the rated load amount of "Normal" and "Extra" drying degrees, a drying process carried out after the detections of the plurality of resistance values a passing time of at least one resistance value selected from among of the plurality of resistance values is predicted is carried out. The hot air operation time in accordance with the measured time is calculated, and the hot air operation during the calculated hot air operation time is carried out. When under the small load amount, a drying process is carried out in the form of a hot air operation by calculating a necessary time for "Damp" drying degree under a small load amount in accordance with a time for passing a predetermined resistance value after a lapse of a constant time from the start of drying operation. When one of "Semi", "Normal" and "Extra" drying degrees under the small load amount is selected, a hot air operation is carried out at a constant time according to the calculated time for "Damp" drying degree.

Abstract: Disclosed is an apparatus for controlling an electric clothes dryer having an electrical heater arranged to be supplied with electric power from a power source to generate heat so as to dry clothes by air heated by the heater, the apparatus comprising a switching device for opening/closing an electrical connection between the power source and the heater in response to a control signal, a voltage detecting circuit for detecting a voltage of the power source and for generating an overvoltage signal when the detected voltage exceeds a predetermined value, and a control signal generating circuit responsive to the overvoltage signal for generating the control signal for turning on/off the switching device. The control signal is formed so that the opening period of the switching device corresponds to the value of the overvoltage signal.

Abstract: A lint and raveling collector for a clothes dryer is installed on the side of the rotating drum. The lint and raveling collector has a lint and raveling filter and a lint and raveling collecting box. The lint and raveling filter has a net-like filter member, and ribs provided on the surface of the net-like filter member to prevent friction between the filter member and the clothing. The collecting box has an opening formed at its portion facing the ribs. The collecting box covers the lint and raveling filter in such a manner that a space for accumulating the lint and raveling is defined between the lint and raveling filter and the inner wall of the whole portion of the collecting box except for the opening portion. By provision of the ribs, the lint and raveling can not pass through the interstices of the filter member, and clothing is prevented from directly rubbing against the surface of the filter member.

Abstract: A process for determining a bacterial endotoxin, which comprises contacting an assay sample with (A) a material selected from the group consisting of an amoebocyte lysate of horseshoe crab an a pro-clotting enzyme separated from the lysate, and (B) a peptide-type substrate of the formula (R.sub.1 --Gly--Arg--R.sub.2), wherein R.sub.1 represents a member selected from the group consisting of an L-amino acid moiety whose N-terminal is protected by a protective group, a peptide moiety consisting of an L-amino acid and protected by a protective group at its N-terminal, a D-amino acid substituted L-amino acid moiety, and a D-amino acid substituted peptide moiety consisting of an L-amino acid, and is bonded to the amino group of the glycine moiety expressed by Gly through a peptide bond; and R.sub.