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Full-Text Articles in Engineering
Self-Regenerating Nanotips For Low-Power Electric Propulsion (Ep) Cathodes, Lyon Bradley King
Self-Regenerating Nanotips For Low-Power Electric Propulsion (Ep) Cathodes, Lyon Bradley King
Michigan Tech Patents
Spindt-type field-emission cathodes for use in electric propulsion (EP) systems having self-assembling nanostructures that can repeatedly regenerate damaged cathode emitter nanotips. A nanotip is created by applying a negative potential near the surface of a liquefied base metal to create a Taylor cone converging to a nanotip, and solidifying the Taylor cone for use as a field-emission cathode. When the nanotip of the Taylor cone becomes sufficiently blunted or damaged to affect its utility, the base metal is re-liquefied by application of a heat source, a negative potential is reapplied to the surface of the base metal to recreate the …
Cutting Tool Insert Having Internal Microduct For Coolant, William J. Endres
Cutting Tool Insert Having Internal Microduct For Coolant, William J. Endres
Michigan Tech Patents
A cutting tool insert includes: a body defining a rake face, a flank face, and a cutting edge at an intersection of the rake and flank faces; and a cooling microduct within the body. The microduct has a cross-sectional area of not more than 1.0 square millimeter. The microduct is adapted to permit the flow of a coolant therethrough to transfer heat away from the cutting edge and extend the useful life of the insert. The microduct may have a portion with a cross-sectional area no larger than 0.004 square millimeter, and may communicate through at least one of the …
Methods Of Using Black Bear Parathyroid Hormone, Seth W. Donahue
Methods Of Using Black Bear Parathyroid Hormone, Seth W. Donahue
Michigan Tech Patents
Black bear parathyroid hormone (PTH) and functional fragments thereof are provided. Also provided are methods of using black bear PTH and functional fragments for increasing cAMP in a bone-forming cell; reducing apoptosis in a boneforming cell; decreasing the ratio of expression levels of Bax protein to Bcl-2 protein in a bone-forming cell; increasing the expression level of one or more of a bone matrix protein, a transcriptional activator, or a transcriptional regulator in a bone-forming cell; enhancing bone mineral density, increasing bone mass, decreasing bone loss, or reducing the incidence of bone fractures, or any combination thereof, in a subject; …
Automated Polysomnographic Assessment For Rapid Eye Movement Sleep Behavior Disorder, Joseph W. Burns, Ronald D. Chervin
Automated Polysomnographic Assessment For Rapid Eye Movement Sleep Behavior Disorder, Joseph W. Burns, Ronald D. Chervin
Michigan Tech Patents
Methods and systems for diagnosing or assessing rapid eye movement sleep behavior disorder (RBD). Muscle tone or activity variance during rapid eye movement (REM) and nonrapid eye movement (NREM) sleep intervals of a polysom- nogram are compared. A threshold based on the NREM data is used to identify a subj ect-specific threshold for abnormality in the REM variance. A metric that includes the percentage of REM variance exceeding the threshold relates to RBD.
Wrist Pin Sensing System And Method, Daniel R. Kemppainen
Wrist Pin Sensing System And Method, Daniel R. Kemppainen
Michigan Tech Patents
A method, and a system employing the method, for determining a position of a rotational part in a reciprocating machine. The system includes a quadrature encoder and an interrupter coupled to the rotational element. As the interrupter rotates with the wrist pin, the quadrature encoder generates some binary signals based on the rotation of the wrist pin. A digital-to-analog converter then converts the binary signals into a single analog signal. The system then wirelessly transmits the single analog signal for processing by other remote components.
Capture And Sequestration Of Carbon Dioxide In Flue Gases, Surendra Komar Kawatra, Timothy C. Eisele, John J. Simmons
Capture And Sequestration Of Carbon Dioxide In Flue Gases, Surendra Komar Kawatra, Timothy C. Eisele, John J. Simmons
Michigan Tech Patents
There is provided a process for the capture and sequestration of carbon dioxide that would otherwise enter the atmosphere and contribute to global warming and other problems. C02 capture is accomplished by reacting carbon dioxide in flue gas with an alkali metal carbonate, or a metal oxide, particularly containing an alkaline earth metal or iron, to form a carbonate salt. A preferred carbonate for C02 capture is a dilute aqueous solution of additive-free (Na2C03). Other carbonates include (K2C03) or other metal ion that can produce both a carbonate and a bicarbonate salt. Examples of suitable metal oxides include several alkaline …