Other

The Catholic University of America

Catholic University of America, the

Theodore Aaron Litovitz

Pedro B Macedo

Joseph H Simmons

Nicholas Lagakos

Robert K Mohr

Robert J Meister

Luis M Penafiel

Patrick Mehl

Andrea Lynn Cohen

Hamid Hojaji

Catherine J Simmons

Pedro B De Macedo

Hamid Hojaj

Enhancing the effectiveness of therapeutic ionizing radiation and other treatments of disease in which cells are to be destroyed or modified, by subjecting cells in need thereof to low-dose radiation to increase the sensitivity of the cells to subsequent subjection with a lethal dose of high dose radiation (HDR), a chemotherapeutic agent, or other type of therapeutic treatment.

Use of weak stressors to enhance the effectiveness of ionizing radiation and other treatments of disease

The present invention provides a method and apparatus for delivering an electric field to a body by delivering a first magnetic field from a first coil in a first orientation to a body and directed at a desired target within the body, and delivering a second magnetic field from a second coil in a second orientation directed at the desired target within the body to induce an electric field across the desired target, wherein only one magnetic field is delivered to the body at any one time.

Methods of using magnetic fields to uniformly induce electric fields for therapeutic purposes

Method of using magnetic fields to uniformly induce electric fields for therapeutic purposes

Methods and apparatus are described for the treatment of diseases by exposures to electromagnetic fields. Also, apparatus is described for focusing the biological effectiveness of such fields on specific cells, tissues or organs of a human or animal body.

Use of electromagnetic fields in cancer and other therapies

An arrangement for inhibiting the adverse effect of an ambient time varying field having an electric component of 5 Kv/M or less and/or a magnetic component of 500 &mgr;T or less on a living system. To provide protection, at least one of the characteristic parameters of said field to which the living system is exposed is changed within time intervals of less than 10 seconds.

Means for protecting living systems from adverse effects of electric, magnetic and electromagnetic fields

Methods and apparatus are described to inhibit the adverse health effects of ischemia, hypoxia, anoxia or other stress by the application of a time-varying field to the region of the affected organ(s) for a short period of time (of the order of 20 minutes). A 'field' means a time varying electric field, a time varying magnetic field and/or a radiating electromagnetic field. The exposure can be started up to two or more hours in advance of the ischemic event or other stress causing event. Inhibition occurs even if the field is applied after the onset of ischemic or anoxic stress.

Protection of living systems from the adverse effects of stress

Methods and apparatus for inhibiting the adverse effect of an ambient time varying field having an electric component and/or a magnetic component on a living system. To provide protection, the field to which the system is exposed is caused to be one wherein at least one of the characteristic parameters of said field to which the living system is exposed is changed within time intervals of less than 10 seconds. Living systems which are benefitted include humans.

Protection of living systems from adverse effects of electric, magnetic

The embodiments of the inventions disclosed in this application develop a `protection` electric, magnetic or electromagnetic field or fields which are either superimposed upon an ambient field which is detrimental to the health of living systems, or incorporated into the electrical circuit of the device which is generating the detrimental field. Either arrangement is successful in `confusing` living cells, and thereby reducing the harmful effects of the otherwise detrimental field.

The disclosed embodiments of the inventions disclosed in this application develop a `protection` electric, magnetic or electromagnetic field or fields which are either superimposed upon an ambient field which is detrimental to the health of living systems, or is incorporated into the electrical circuit of the device which is generating the detrimental field. Either arrangement is successful in `confusing` living cells, and thereby reducing the harmful effects of the otherwise detrimental field.

The present invention comprises a process for separating rare earth ions or actinide ions or mixtures thereof in solution by passing the solution through an ion exchange material to separate the rare earths or actinides or mixtures thereof. The ion exchange material has a surface area of about 5-1500 m.sup.2 /g. The ion exchange material is impregnated with a liquid containing alkali metal cations, Group Ib metal cations, ammonium cations, organic amines or mixtures thereof, at a pH range above about 9. A plurality of fractions of the solution is collected as the solution passes through the ion exchange material, preferably in a column. This process is particularly preferred for separating rare earth ions and especially lanthanum and neodymium. It is particularly preferred to purify lanthanum to contain less than 0.1 ppm, preferably less than 0.01 ppm, of neodymium. In another embodiment, the present invention comprises a method of producing a porous silicate glass containing at least one transition metal oxide additive selected from a group consisting of the bottom two rows of Group VIII of the Periodic Table. This method comprises preparing a base glass from a melt which contains 40-80 mol percent of silica and up to 10 mol percent of one or more transition metal oxide additives selected from said group or of precursors of said oxide additives, separating said base glass by heat treatment into at least a soluble phase and an insoluble phase, leaching out the soluble phase. In yet another embodiment, the present invention comprises an ion exchange material consisting of a porous glass or silica gel including at least about 0.2 mol percent of a transition metal oxide or hydrous metal oxide and containing at least 0.3 mol percent of alkali metal cation, Group Ib metal cation, ammonium, organic amines, or mixtures thereof.

Ion exchange compositions

This invention relates to the immobilization of toxic, e.g., radioactive, materials in a silicate glass or silica gel matrix for extremely long periods of time. Toxic materials, such as radioactive wastes containing radioactive cations, which may be in the form of liquids, or solids dissolved or dispersed in liquids or gases, are incorporated into a glass or silica gel matrix, having alkali metal, Group Ib metal and/or ammonium cations bonded to silicon atoms of said glass or silica gel through divalent oxygen linkages, by a process which involves the ion exchange of said toxic or radioactive cations with said alkali metal, Group Ib metal and/or ammonium cations to bind said toxic or radioactive cations to silicon atoms of said glass or silica gel through said silicon-bonded divalent oxygen linkages. Thereafter, the resulting glass or silica gel now characterized by toxic or radioactive cations bonded to silicon atoms through divalent oxygen linkages can be stored, or packaged in suitable containers, or disposed of as by burial, and/or sintered to collapse the pores thereof.

Fixation by ion exchange of toxic materials in a glass matrix

A sensor for measuring stress, temperature, pressure, sound, etc. comprising an optical waveguide, preferably an optical fiber waveguide, a light source which injects light into one end of the waveguide, a deformer contacting and deforming the waveguide to cause light to couple from originally excited modes to other modes, and an optical detector to detect the change in light coupling caused by deformation of the waveguide.

Growing community of inventors

Annapolis, MD, United States of America

Theodore Aaron Litovitz