Abstract: The optimum electrolyte level sensing method and the automatic topping up apparatus for storage wet cell are disclosed. The difference in the conductivities between the distilled water and the electrolyte is utilized. An injection outlet portion(15), an adjust ring(14), and two wires are used to detect the optimum electrolyte level to supply distilled water to storage cells. The feedback control to maintain the constant optimum electrolyte level of storage cells is carried out by a single microprocessor.

Abstract: An apparatus for inspection of a reactor pressure vessel uses a laser driven type underwater wall climbing robot guided by a laser pointer. The inspection apparatus uses a small and light underwater wall climbing robot for the quick and adequate inspection of weld lines of a reactor pressure vessel. Position control methods are provided for the stable guidance of the robot to desired three dimensional inspection positions on the reactor pressure vessel.

Abstract: A method and an apparatus using a fluidized bed type adsorbing tower for manufacturing a TEDA-impregnated active carbon which is used for removing toxic materials from a fluid. A base active carbon is dried to remove the water component, and the dried active carbon is filled into the fluidizing type adsorbing tower and to above a sieve plate. A TEDA reagent is injected into a TEDA vapor generating vessel. A heated air is supplied into the TEDA vapor generating vessel so as to generate a TEDA vapor mixed with the heated air. The heated air mixed with the TEDA vapor is supplied into the lower portion of the fluidized bed type adsorbing tower so as to make the base active carbon fluidized. Thus the TEDA vapor is impregnated into the active carbon within the fluidized carbon bed.

Abstract: The present invention relates to the radioactive chitosan complex formed by labelling a chitosan, a biocompatible and biodegradable natural polymer, with radionuclide, a radioactive chitosan macroaggregate formed by making chitosan complex into particles, and a kit for preparing radioactive chitosan complex, process for preparation thereof and the use thereof for an internal radiation therapeutic agent. The radioactive chitosan complex and its macroaggregate can be used as an internal radiation therapy for rheumatoid arthritis or cystic cancer such as liver cancer, brain cancer, breast cancer, ovary cancer and the like by administering them directly to the lesion.

Abstract: A swing angle measuring apparatus generates feedback signals for closed loop regulation of a load swinging motion in operation of a crane. The swing angle measuring apparatus measures two-dimensional swing angles, and includes a rope fixed to a hoisting device, two laser displacement sensors, laser reflecting plates, and a rectangular box attached to a hoisting device. Two steel reflecting plates are installed on the periphery of the fixed rope. Two laser displacement sensors are installed in a rectangular box such that the heading of the sensors are configured to perpendicularly intersect the faces of the laser reflecting plates. The configuration of the displacement sensors and the reflecting plates can be reversed. The rectangular box is attached to the hoisting device, and the laser reflecting plates are placed at an offset distance away from the face of the laser displacement sensors, at which a sensor signal of 0 volts is obtained.

Abstract: A method and an apparatus are disclosed for desorbing TEDA by utilizing a fluidized bed so as to reuse a used impregnated active carbon for the purpose of removing toxic materials from a fluid. The impregnated active carbon is injected into a fluidized bed at a high temperature to carry out a desorbing process, in such a manner that TEDA and CH.sub.3 l are desorbed from the impregnated active carbon at a high temperature by utilizing the high volatility of TEDA and CH.sub.3 l. If a heated air is injected through an air inlet into the desorbing tower, the high temperature air and the used impregnated active carbon are met in a fluidized state, with the result that the active carbon with TEDA and CH.sub.3 l desorbed is discharged.

Abstract: A method for manufacturing a delayed hydride cracking resistant zirconium ahoy (Zircaloy-2, Zircaloy-4, Zr-2.5% Nb, pure Zr, etc.) pressure tube includes the steps of making a seamless pressure tube having a diameter smaller than the final size by extrusion or drawing, and then expanding the tube at a temperature below 600.degree. C. by cross rolling.

Abstract: A method for generating high peak power pulses in lamp pumped continuous lasers by current mixing is disclosed, in which three kinds of oscillations, i.e., pure continuous wave laser oscillation, pure pulse laser oscillation and mixed laser oscillation of continuous wave and pulse lasers are attained without replacing any internal components of the laser. The current mixing is implemented by combining a high peak pulse current from pulse mode power supply and a DC current from the continuous wave laser power supply directly with isolating diodes, whereby a high peak power pulse equivalent to several scores of times the output of a continuous wave laser is simultaneously obtained.

Abstract: A stable DC power system of high-voltage and good-output performance is provided by adding a 3-phase inverter, whereby modified waveform for an output control is produced and a filter to a conventional DC power system and by bridge-rectifying. The modified sinusoidal wave such as a varied wave whose upper portion ranging from 30.degree. to 150.degree. is flat of a 1/2 cycle of the sinusoidal wave, a modified wave whose portions ranging from 30.degree. to 90.degree. and from 90.degree. to 150.degree. are linear in a 1/2 cycle of the sinusoidal wave and a modified wave whose portions ranging from 30.degree. to 90.degree. and from 210.degree. to 270.degree. are recessed so as to be symmetrical with respect to a line in the whole cycle of the sinusoidal wave are used for reducing ripples of the output voltage after the 3-phase rectification.

Abstract: The present invention provides silica balls in a spherical shape, the silica balls having a porous internal structure and a dense outside layer.

Abstract: An electrolyzing apparatus using a circulating capillary tube type mercury bundled electrode is disclosed, in which the advantage of mercury that it has a high overpotential for hydrogen evolution reaction compared with the general solid metals is preserved, and the disadvantage of mercury that it cannot be so shaped as to have a large contact area is overcome. That is, the mercury contact area is maximized. The oxidation and reduction reactions which occur in the vertically circulating capillary tube type mercury bundle electrode electrolyzing apparatus can be defined by a simple formula so as to quantize their analysis. Based on this formula, the stability checking, and the adjustment of the oxidation state of metal ions in the solution can be carried out in a rapid and continuous manner. Further, the concentration of the metal ions and the oxidation state of the metal ions within the solution can be analyzed in the same manner.

Abstract: A nuclear containment arrangement has a permanent pool cavity seal extending across an annular gap between a reactor pressure vessel and a refueling pool wall to provide a water tight seal therebetween. A seal plate has a support ring with a cylindrical section weldedly connected to an outer seal ring on an embedded ring. A J-shaped flexible ring attached to the seal plate allows axial and radial movement of the reactor vessel during thermal expansion and contraction. The inner portion of the seal plate overhangs the J-shaped flexible ring thereby to protect it from damage resulting from an object dropped thereon. Cooperating access holes and access hole covers in the seal plate provide access to the refueling pool cavity. Support arms underneath the seal plate are provided. Each support arm may have leveling screws to adjust the level of the seal plate.

Abstract: Self-seeding method and apparatus for a dual cavity type tunable laser utilizing a diffraction grating are disclosed, in which first diffracted beams and 0th diffracted beams are utilized. The self-seeding method and apparatus for a dual cavity type tunable laser are constituted such that two oscillators are internally provided by utilizing a diffraction grating and by making a single medium shared, so that the respective oscillators would serve as a master oscillator and a slave oscillator, thereby making it possible to save optical devices. Further, in the present invention, only one partially reflecting mirror is disposed on the output portion of a GIM (grazing incidence with tuning mirror) type oscillator, so that a self-seeding would occur, and that the laser output would be greatly amplified with the oscillation linewidth maintained without variations.

Abstract: A valve having a magnetic force transmission apparatus is disclosed including: a closed body for tightly closing internal components and rotation shaft of the body of the valve, so as to interrupt the leakage of fluid from the valve and maintain perfect airtightness; and a pair of permanent magnet plates opposingly placed in the closed body and for allowing the valve open/close by transmitting power using the magnetic force of magnet pieces attached on yokes in non-contact.

Abstract: An apparatus and a method for precisely wavelength-tuning single longitudinal mode tunable laser beams by utilizing a wedge prism are disclosed in which, instead of a tuning mirror, a prism is rotated, so that a single longitudinal mode can be maintained without causing a mode hopping of the longitudinal mode, thereby precisely tuning the wavelength. That is, a wedge prism 4 is inserted into the single longitudinal mode tunable laser resonator, and the prism is rotated, thereby precisely tuning the wavelength of the laser beams.

Abstract: A method for removing the oscillation and reducing the position error of a load carried by an industrial crane comprising: a non-oscillation control algorithm which provides the trolley and load system with sufficient damping in order to remove the oscillations of the load by adjusting the trolley velocity in accordance with the oscillation angle of the load measured by an angle measuring device, a position control algorithm which controls the load to stop at the exact destination by generating the crane velocity proportional to the error between desired and actual positions, and a velocity paten plan algorithm which establishes the overall trolley velocity including a two-stage linear and parabolic deceleration of the trolley in accordance with the desired position and the applying time passed on the above two algorithms. These algorithms are stored in the computer memory and are sequentially applied.

Abstract: The invention discloses a method for treating a heavy metal containing waste water by using acorns. Acorns and nuts of other trees belonging to the Eagaceae group are dried at the room temperature and under the sun beams. Then acornic acid is extracted from the dried acorns. Then the acornic acid is filtered until it becomes colorless. A heavy metal containing waste water (low concentration and high concentration) is maintained at pH=8-11.5 by adding NH.sub.4 OH, Ca(OH).sub.2 and NAOH. Then the acornic acid is added into the waste water, and then, Ca.sup.++ ions singly or together with other divalent cations are added by 50 ppm. Then this solution is agitated for several minutes, and then, the heavy metals are precipitated, or the solution is filtered, thereby treating the heavy metal containing waste water.

Abstract: An article and method of manufacture of a (Bi,Pb)--Sr--Ca--Cu--O superconductor comprisingcalcinating powders of superconductor precursors of PbO, Bi.sub.2 O.sub.3, SrCO.sub.3 or SrO, CaCO.sub.3 or CaO in air to obtain a 2223 superconductor lump and second phases;crushing the lump into powder;molding the powder into a superconductor body;disposing the body within silver powder to form a composite;molding the composite;heat treating the composite to increase the bond strength of the silver powder; andworking the composite into a useable shape by rolling and drawing while applying intermediate and final heat treatments to obtain a final product.