Abstract: The present invention comprises a process for the removal of oxides of nitrogen and sulfur from a gas mixture containing those species by exposure of the gas mixture to ultraviolet radiation having a wavelength below 220 nanometers.
Abstract: Two diagnostic methods for evaluating LDL mechanism in a patient are disclosed. A novel diagnostic agent for evaluating LDL metabolism comprising a ligand capable of binding LDL receptors and a fluorescent label and a diagnostic kit for evaluating LDL metabolism which utilized the specified diagnostic agent are also disclosed.
Type:
Grant
Filed:
October 23, 1989
Date of Patent:
August 4, 1992
Assignee:
Lehigh University and Northeast Benjamin Franklin Technology Center of PA
Inventors:
John H. Abel, Barbara Obrepalska-Bielska
Abstract: Monodisperse latexes of at least 2-30 microns particle size are prepared from an emulsion recipe comprising a monodisperse seed latex polymer on the order of 2 microns or less particle size, a polymerizable monomer, an initiator, at least one inhibitor, and a water-soluble polymeric emulsifier of 10.sup.4 -10.sup.7 molecular weight. Optional ingredients are crosslinking monomer, oil-soluble inhibitor if the mixture is to be stored before polymerization, and one or more additional emulsifiers selected from a water-soluble comonomer or polymer of 0.3.times.10.sup.3 -5.times.10.sup.3 molecular weight and a non-polymeric anionic emulsifier. Additional particle size growth and monodisperse latex yield are realized by polymerization in a microgravity environment.
Type:
Grant
Filed:
August 19, 1988
Date of Patent:
April 21, 1992
Assignee:
Lehigh University
Inventors:
John W. Vanderhoff, Fortunato J. Micale, Mohamed S. El-Aasser, Chi-Ming Tseng
Abstract: This invention provides an apparatus and method for the complete fractionation of submicron particles according to size by capillary hydrodynamic fractionation. This objective is achieved by using small diameter capillaries; introducing a minor fraction of a liquid dispersion of particles to be separated into at least one capillary fraction; passing the minor fraction through the capillary; and, at the exit of the capillary, diluting the minor fraction with the same liquid as is carrying the fractionated sample. These modifications in the flow patterns are essential to the use of capillaries with diameters smaller than 60 microns. This invention is especially adapted for rapid analytical separation of not only rigid colloidal particles but also of soft latexes.
Abstract: A new group of alpha substituted cresol choline carbonate salts, that act as site-specific, irreversible inhibitors of acetylcholinesterase. A halomethylation method and a halogenation method for producing said alpha substituted cresol choline carbonate salts and analogs thereof. Methods of using the inhibitors as anticholinergic insecticides and to reduce acetylcholinesterase activity levels in organisms with excessive levels of acetylcholinesterase.
Type:
Grant
Filed:
June 10, 1986
Date of Patent:
January 21, 1992
Assignee:
Lehigh University
Inventors:
Ned D. Heindel, Miguel Turizo, Hugh D. Burns, Venkataraman Balasubramanian
Abstract: An organic two-phase system useful for the separation and purification of chemicals, biochemicals and optical isomers. The two-phase system can be formed with water soluble polymers as one phase, and chiral compound as the other phase together with a water-miscible organic solvent and/or water.
Abstract: A system for monitoring and measuring the corrosion reaction of metals in an environment. The system includes a sample corrosion element of substantially the same material as the structure to be monitored, a galvanic cell for generating an electric signal indicative of the corrosion on the corrosion element, and a monitor for receiving and storing the generated signal. Moreover, the system is designed to incorporate corrosion products and environmental contaminants in order to simulate actual, localized conditions on a particular area of a structure.
Type:
Grant
Filed:
October 31, 1989
Date of Patent:
September 3, 1991
Assignee:
Lehigh University
Inventors:
Malcolm L. White, Henry Leidheiser, Jr.
Abstract: The present invention concerns a process for carrying out the water gas shift reaction in the presence of carbon monoxide and water in contact with an alkali-doped catalyst.
Type:
Grant
Filed:
June 26, 1989
Date of Patent:
June 4, 1991
Assignee:
Lehigh University
Inventors:
Kamil Klier, Richard G. Herman, Gamimi A. Vedage
Abstract: A method and system for biofouling control of fluid containing structure of susceptible biofouling, wherein chlorine, hot water and/or some other control agent is injected by plural stages into the boundary layer, and chlorine residual, water temperature, or some other respective control parameter is maintained in the boundary layer just upstream of the next injection point.
Abstract: The present invention comprises a process for the removal of oxides of nitrogen and sulfur from a gas mixture containing those species by exposure of the gas mixture to ultraviolet radiation having a wavelength below 200 nanometers in absence of ammonia.
Abstract: A method and apparatus for in-process transient spectroscopic analysis of a molten metal, wherein a probe containing a pulsed high-power laser producing a pulsed laser beam having a substantially triangular pulse waveshape is immersed in the molten metal and irradiates a representative quantity of the molten metal. The pulsed laser beam vaporizes a portion of the molten metal to produce a plasma plume having an elemental composition representative of the elemental composition of the molten metal. Before the plasma plume reaches thermal equilibrium shortly after termination of the laser pulse, a spectroscopic detector in the probe detects spectral line reversals, as caused by absorption of radiation emitted by the hotter inner portion of the plasma plume to relatively coller outer portions of the plasma plume, during a short first time window.
Abstract: An aqueous two-phase system useful for the separation and purification of biochemicals and optical isomers. The two-phase system can be formed with water soluble polymers as one phase, and chiral compound as the other phase.
Abstract: An amphiphilic polymer, having the monomer unit structure A, B, C or D: ##STR1## wherein R is at least one H and C.sub.1-6 alkyl, k=1-4, m=4-30, n=2-50 and x=2-500. ##STR2## wherein p and q are, independently, 0-22, and the sum of p and q is 4-22; ##STR3## wherein r and s are, independently, 0-22, and the sum of r and s is in the range 2-44, Ar is a divalent aromatic radical; and compounds in which the ester group in compounds A, B, C and D is replaced by an amide, urea, urethane, ether or carbonate. These compounds are useful for disrupting lipid membranes, as surfactants and dispersing agents and in the treatment of viral, bacterial and fungal diseases.
Abstract: Mordenite, a synthetic zeolite, is produced by reaction of particulate volcanic glasses with limited amounts of strongly basic aqueous solutions at elevated temperature and autogenic pressure for approximately one day.
Abstract: A process for producing a galvanneal layer on a steel substrate, including forming a Zn-Fe coating having a predetermined Fe content F (wt. %) on the steel substrate; and heat treating the Zn-Fe coating on the substrate from a predetermined starting temperature T.sub.1 (.degree.C.) to a predetermined ending temperature T.sub.2 (.degree.C.) at a predetermined heating rate R (.degree.C./min.), wherein F, T.sub.1, T.sub.2, and R are selected so that the following condition is met,a.R.sup.2 +b.T.sup.2 +c.R.F.+d.R.T +e.R+f.T=gwhere a, b, c, d, e, f and g are predetermined constants, thereby to form a virtually 100% .delta..sub.1 phase galvanneal structure. Alternatively, the heat treatment can be preformed until the specimen temperature is just below a minimum temperature of the .delta..sub.1 phase stability range at at selected Fe content and heating rate, followed by an isothermal hold for a predetermined time period until transformation to the .delta..sub.1 phase occurs.
Abstract: The disclosed stage lighting apparatus includes a constant-direction beam forming unit and an adjustable beam redirector for aiming the beam at a wide range of locations varying in azimuth and elevation, and programmable remote-control equipment for the various adjustments of the beam-forming unit and the beam redirector.
Abstract: A stage lighting unit including a beam former and beam redirector. The beam redirector allows for the remote control of beam over a large expanse of the stage.
Abstract: The present invention concerns an improved catalyst and method for the production of methanol from both binary and ternary synthesis gas mixtures.
Type:
Grant
Filed:
December 21, 1987
Date of Patent:
June 27, 1989
Assignee:
Lehigh University
Inventors:
Kamil Klier, Richard G. Herman, Gamimi Vedage
Abstract: Compounds adapted to making polymerizable, cross linkable vesicles and methods for making these compounds comprising combining a phophatidylcholine derivative with an acid anhydride of a heterocyclic carbon/disulfide to form reaction products which when dispersed in aqueous buffer form vesicles that are readily polymerized by the addition of a reducing agent. The reduced vesicles form polymerized, highly cross-linked, vesicles which have a much greater stability and longer shelf life.