Abstract: A bleomycin conjugate for use in targeting a compound to a body tumor. The conjugate includes an oxidized bleomycin/cobalt(III) complex and the compound to be targeted joined to the complex through a monodentate cobalt/sulfur coordinate bond. Also disclosed are methods for preparing the conjugate, and for targeting the compound to a body tumor, for purposes of tumor radioimaging or therapy.

Abstract: In order to reduce the duration of the method of producing lead paste for batteries by mixing lead oxide, sulphuric acid, water and possibly conventional additives below a limit temperature with at least partial cooling, acid is first added at substantially the maximum speed possible for distribution in the mix, without causing burning therein, and so quickly that the amount of heat supplied to the mix is greater than the amount of heat which is removed by cooling, and then, when the material being mixed reaches a predetermined operating temperature which is below the limit temperature, the addition of acid is regulated in dependence on constant temperature measurements in the material being mixed, in such a way that the temperature remains at the level of the operating temperature substantially until the end of the operation of adding acid.

Abstract: In a process for continuously separating uranium isotopes, .sup.235 U and .sup.238 U, by oxidation-reduction chromatography using a column of an anion exchanger, the separation of uranium isotopes and the regeneration of the oxidizing agent and reducing agent both deactivated during the separation of uranium isotopes can be simultaneously effected in a single column by returning to and passing through the column of an anion exchanger having a uranium adsorption zone an eluate containing a deactivated oxidizing agent and a deactivated reducing agent to regenerate the deactivated oxidizing agent and the deactivated reducing agent and to form an oxidizing agent zone, and returning to and passing through the column the regenerated reducing agent for the reduction of uranium.

Abstract: A method and apparatus for radiation degradation processing of polytetrafluoroethylene makes use of a simultaneous irradiation, agitation and cooling. The apparatus is designed to make efficient use of radiation in the processing.

Abstract: A calcium hypochlorite-containing emulsion having an emulsifying agent which comprises an oil soluble ethylene oxide adduct of an alkylphenol having from about 4 to about 7 moles of ethylene oxide and an oil soluble alkyl aryl sulfonate in a chlorinated organic solvent.This emulsion is suitable for decontaminating areas, structures and articles which have been contaminated with toxic chemical agents. The emulsion can be prepared from calcium hypochlorite compounds made from a wide variety of processes and can be used over a broad rang of climatic conditions. The emulsions are consistently formed very rapidly and can spread, penetrate and remain stable for sufficient amounts of time to provide complete neutralization of the contaminating agent.

Abstract: Solutions of molecular oxygen in liquid hydrocarbons are prepared by bringing a liquid hydrocarbon into contact with molecular oxygen under superatmospheric pressure in a vertical absorption zone, by a process in which(a) a layer of water is maintained at the lower end of the absorption zone,(b) molecular oxygen is passed into the layer of water,(c) a liquid hydrocarbon is fed in above the layer of water,(d) the finely divided molecular oxygen rising from the layer of water is passed upward together with the liquid hydrocarbon at from 0.degree. to 50.degree. C., with thorough mixing in the absorption zone, with the proviso that no cohesive gas phase is formed, and(e) the solution of molecular oxygen in the liquid hydrocarbon is discharged in the upper part of the absorption zone.

Abstract: A process and apparatus for separating isotopes by selective excitation of isotopic species of a volatile compound by tuned laser light. A highly cooled gas of the volatile compound is produced in which the isotopic shift is sharpened and defined. Before substantial condensation occurs, the cooled gas is irradiated with laser light precisely tuned to a desired wavelength to selectively excite a particular isotopic species in the cooled gas. The laser light may impart sufficient energy to the excited species to cause it to undergo photolysis, photochemical reaction or even to photoionize. Alternatively, a two-photon irradiation may be applied to the cooled gas to induce photolysis, photochemical reaction or photoionization. The process is particularly applicable to the separation of isotopes of uranium.

Abstract: A process of preparing a bleaching liquor with an improved stability involves mixing of magnesium ions and hydrogen peroxide prior to the addition of sodium hydroxide. The liquor may be used to bleach Kraft wood pulps, obtaining higher brightness levels.

Abstract: A glass frit comprising about 60% by weight of glass formers, 30% by weight of monovalent fluxes and 10% by weight of divalent fluxes; the glass formers consisting essentially of SiO.sub.2 and B.sub.2 O.sub.3 ; the monovalent fluxes consisting essentially of Li.sub.2 O, Na.sub.2 O and K.sub.2 O; the divalent fluxes being selected from the group consisting of CaO, SrO, BaO and PbO; and trace elements not exceeding 10% by weight. Preferably the glass frit has the following composition, in terms of oxides:______________________________________ SiO.sub.2 49% B.sub.2 O.sub.3 12% Li.sub.2 O 3.6% Na.sub.2 O 14.4% K.sub.2 O 11.4% CaO 5% SrO 1.85% BaO 2.75% ______________________________________The glass frit has a coefficient of thermal expansion of 7.2.times.10.sup.-6 /.degree. F. (13.times.10.sup.-6 /.degree. C.) over the range from room temperature to 600.degree. F. (316.degree. C.). It is useable to make a slip where it can be fired at temperatures around 950.degree. F. (510.degree. C.

Abstract: A pellet of potassium superoxide, as the oxygen-yielding chemical, with an additive of catalyst material for stimulating the release of oxygen is improved by providing a concentrated addition of the catalyst material on the surface of the pellet; this permits a uniform release of oxygen during the entire period of the use of the pellet. With the pellet, oxygen is split off as required at the very outset of breathing with the breathing apparatus and a release of oxygen in excess of demand as use continues is avoided. A pellet of this type includes a compressed core body containing substantially potassium superoxide and surrounded by a compressed jacket made of highly catalyzed potassium superoxide material.

Abstract: Solid chlorinating agents can be stored highly stably and safely in a closed system for a long period of time without discoloring or deterioration, when a storage stabilizer of alumino-silica gel obtained from allophane incorporated with active carbon is placed in the ambient atmosphere enclosing the chlorinating agents, preferably not in direct contact with the agents. In addition, the agents do not cause damages on the surface and material of, or breakdown of, the container constituting the closed system, and no offensive odor is generated upon opening even after a prolonged storage.

Abstract: An efficient and economical separation of the gadolinium isotopes Gd.sup.155, Gd.sup.156 and/or Gd.sup.157 from mixtures containing the same is effected by a liquid chromatographic column system using an ion exchange resin and an eluant solution. A portion of the eluant solution is used to saturate the columns and a feed solution containing the mixture of gadolinium isotopes is charged to the columns. Further eluant solution is passed through the saturated columns containing the feed solution to form a fraction of eluant solution rich in the desired gadolinium isotopes which is separated from the remainder of the eluant upon discharge from the columns.

Abstract: Method for removal of plutonium impurity from americium oxides and fluorides. AmF.sub.4 is not further oxidized to AmF.sub.6 by the application of O.sub.2 F at room temperature, while plutonium compounds present in the americium sample are fluorinated to volatile PuF.sub.6, which can readily be separated therefrom, leaving the purified americium oxides and/or fluorides as the solid tetrafluoride.

Abstract: Highly pure uranium hexafluoride is made from uranium oxide and fluorine. The uranium oxide, which includes UO.sub.3, UO.sub.2, U.sub.3 O.sub.8 and mixtures thereof, is introduced together with a small amount of a fluorine-reactive substance, selected from alkali chlorides, silicon dioxide, silicic acid, ferric oxide, and bromine, into a constant volume reaction zone. Sufficient fluorine is charged into the zone at a temperature below approximately 0.degree. C. to provide an initial pressure of at least approximately 600 lbs/sq. in. at the ambient atmospheric temperature. The temperature is then allowed to rise in the reaction zone until reaction occurs.

Abstract: Apparatus and method for producing a stream (56) of a selected isotope. The apparatus comprises means for producing an atomic beam (26) containing the isotope of interest and other isotopes. Means (48) are provided for producing a magnetic field (28) traversing the path of the atomic beam of an intensity sufficient to broaden the energy domain of the various individual magnetic sublevels of the isotope of interest and having the atomic beam passing therethrough. A laser beam (32) is produced of a frequency and polarization selected to maximize the activation of only individual magnetic sublevels of the isotope of interest within the portion of its broadened energy domain most removed from other isotopes within the stream. The laser beam is directed so as to strike the atomic beam within the magnetic field and traverse the path of the atomic beam whereby only the isotope of interest is activated by the laser beam.

Abstract: A process is provided for preparing tricyclopentadienyl cerium as well as the mono and dicyclopentadienyl cerium intermediates which comprises reacting an alkali metal cyclopentadienide with ceric ammonium nitrate, in solution in an inert organic solvent in a manner to obtain either tricyclopentadienyl cerium or to form in sequence, and stepwise, monocyclopentadienyl cerium dinitrate, dicyclopentadienyl cerium mononitrate, and tricyclopentadienyl cerium, depending upon the order of addition of the reactants.

Abstract: A method and binder composition for prolonging the induced plasticity of a particulate ceramic material admixture comprising uranium dioxide and a fugitive binder, and product thereof, for subsequent compaction by compression molding in the manufacture of nuclear fuel pellets. The fugitive binder comprises a reaction product of an amine carbonate or amine carbamate and ammonium oxalate reacted with uranium dioxide at a temperature of at least 65.degree. C. The uranyl oxalate-carbonate reaction product has the composition of (UO.sub.2 (CO.sub.3) (C.sub.2 O.sub.4). 2H.sub.2 O). 2H.sub.2 O.

Abstract: A method and apparatus for laser isotope separation of atoms or molecules. The method for laser isotope separation comprises the irradiation of an atom or molecule to produce an adiabatic population inversion, terminating the radiation sufficiently abruptly to trap the atom or molecule in an excited state, and further radiating the atom or molecule for causing transitions out of the previously excited state for dissociating the molecule or for causing a chemical reaction to effect isotopic separation. The method comprises slowly increasing the intensity of the initial radiation from zero to a value sufficiently high to produce an adiabatic population inversion when the frequency is tuned near a single narrow resonance which includes the overlapping multiphoton resonances originating from either the rotational energy levels of the vibrational ground state of the molecule or the different hyperfine levels of the ground state of the atom for providing the adiabatic population inversion.

Abstract: A method is, herein, disclosed for separating a specific isotope from a mixture of isotopes by first irradiating the isotope mixture with a highly monochromatic laser light that resonates only with the energy level of the specific isotope so as to increase its chemical activity and then bombarding said specific isotope with a molecule containing highly reactive atoms so as to form a spatially separated compound rich in the specific isotope.

Abstract: Process for the removal of plutonium polymer and ionic actinides from aqueous solutions by absorption onto a solid extractant loaded on a solid inert support such as polystyrenedivinylbenzene. The absorbed actinides can then be recovered by incineration, by stripping with organic solvents, or by acid digestion. Preferred solid extractants are trioctylphosphine oxide and octylphenyl-N,N-diisobutylcarbamoylmethylphosphine oxide and the like.