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Method Of Evaluating The Vibration Characteristics Of A Sporting Implement Such As A Golf Club, Kenneth G. Mcconnell, Guy M. Houser Dec 1997

Method Of Evaluating The Vibration Characteristics Of A Sporting Implement Such As A Golf Club, Kenneth G. Mcconnell, Guy M. Houser

Iowa State University Patents

A method of evaluating the vibration characteristics of a golf club comprises identifying the natural frequencies of vibration of the golf club through a pseudorandom vibrational excitation of the club. The club is then excited at least at some of the identified natural frequencies and the club head is observed under a strobe light to identify and locate on the face of the club head the node lines corresponding to the vibrational mode shape for these natural frequencies. The intersection pattern of the node lines as observed and mapped on the club face and the offset of this pattern from ...


Carbon Or Boron Modified Titanium Silicide, Andrew J. Thome, Mufit Akinc Dec 1997

Carbon Or Boron Modified Titanium Silicide, Andrew J. Thome, Mufit Akinc

Iowa State University Patents

A titanium silicide material based on Ti.sub.5 Si.sub.3 intermetallic compound exhibits substantially improved oxidative stability at elevated temperatures. In particular, carbon is added to a Ti.sub.5 Si.sub.3 base material in an amount (e.g. about 0.3 to about 3.6 weight % C) effective to impart substantially improved oxidative stability at elevated temperatures, such as about 1000 Si.sub.3 base material in an amount (e.g. about 0.3 to about 3.3 weight % B) to this same end.


Method And Composition For Coating Wound Or Protecting Animal Skin, Carl A. Huprich, Leo L. Timms Nov 1997

Method And Composition For Coating Wound Or Protecting Animal Skin, Carl A. Huprich, Leo L. Timms

Iowa State University Patents

Solutions of polyether polyurethane with benzoin gum in tetrahydrafuran applied to animal skin provide dry films that are elastic, vapor permeable, water proof, dirt proof, insect proof, aerobic bacteriostatic and adhere well under environmental conditions. Apparent application viscosity can be adjusted as required for specific needs.


Production Method For Making Rare Earth Compounds, R. William Mccallum, Timothy W. Ellis, Kevin W. Dennis, Robert J. Hofer, Daniel J. Branagan Nov 1997

Production Method For Making Rare Earth Compounds, R. William Mccallum, Timothy W. Ellis, Kevin W. Dennis, Robert J. Hofer, Daniel J. Branagan

Iowa State University Patents

A method of making a rare earth compound, such as a earth-transition metal permanent magnet compound, without the need for producing rare earth metal as a process step, comprises carbothermically reacting a rare earth oxide to form a rare earth carbide and heating the rare earth carbide, a compound-forming reactant (e.g. a transition metal and optional boron), and a carbide-forming element (e.g. a refractory metal) that forms a carbide that is more thermodynamically favorable than the rare earth carbide whereby the rare earth compound (e.g. Nd.sub.2 Fe.sub.14 B or LaNi.sub.5) and ...


Soybean Designated Ax 4663-5-4-5, Walter R. Fehr, Earl G. Hammond Nov 1997

Soybean Designated Ax 4663-5-4-5, Walter R. Fehr, Earl G. Hammond

Iowa State University Patents

A method is described for producing soybean varieties and lines exhibiting palmitic acid contents of at least about 18.0% up to 30.0% or more. The novel soybean lines are obtained from a soybean seed designated A1937NMU-85 and its descendants, particular desirable progeny resulting from the cross of A1937NMU-85 with ElginEMS-421, and further with the cross of selected progeny with A89-259098.


Soybean Designated A1937 Nmu-85, Walter R. Fehr, Earl G. Hammond Nov 1997

Soybean Designated A1937 Nmu-85, Walter R. Fehr, Earl G. Hammond

Iowa State University Patents

A method is described for producing soybean varieties and lines exhibiting palmitic acid contents of at least about 18.0% up to 30.0% or more. The novel soybean lines are obtained from a soybean seed designated A1937NMU-85 and its descendants, particular desirable progeny resulting from the cross of A1937NMU-85 with ElginEMS-421, and further with the cross of selected progeny with A89-259098.


Method Of Ultrasonic Measurement Of Texture, Robert Bruce Thompson, John F. Smith, Seung S. Lee, Yan Lee Oct 1997

Method Of Ultrasonic Measurement Of Texture, Robert Bruce Thompson, John F. Smith, Seung S. Lee, Yan Lee

Iowa State University Patents

A method for measuring texture of metal plates or sheets using non-destructive ultrasonic investigation includes measuring the velocity of ultrasonic energy waves in lower order plate modes in one or more directions, and measuring phase velocity dispersion of higher order modes of the plate or sheet if needed. Texture or preferred grain orientation can be derived from these measurements with improves reliability and accuracy. The method can be utilized in production on moving metal plate or sheet.


Preparation Of Pyrrol And Oxazole Compounds; Formation Of Porphyrins And C-Acyl-Α-Amino Acid Esters Therefrom, John G. Verkade, Jianseng Tang Sep 1997

Preparation Of Pyrrol And Oxazole Compounds; Formation Of Porphyrins And C-Acyl-Α-Amino Acid Esters Therefrom, John G. Verkade, Jianseng Tang

Iowa State University Patents

A process for preparation of new or previously known pyrrol derivatives is provided. The process involves reacting a nitroalkane or a nitroalkene with an isocyanoacetate in the presence of a prophosphatrane "super base" to prepare the pyrrol compounds. Through production of new pyrrol compounds, new pyrrol derivatives such as dipyrromethanes and porphyrins may be synthesized. In addition, the high yields of pyrrol compounds produced according to the method of the invention provide for more efficient production of previously known dipyrromethane and porphyrin compounds. The invention further provides a mild, high yield process for de-esterification of esterified pyrrol and dipyrromethane compounds ...


Soybean Designated A89-259098, Walter R. Fehr, Earl G. Hammond Sep 1997

Soybean Designated A89-259098, Walter R. Fehr, Earl G. Hammond

Iowa State University Patents

A method is described for producing soybean varieties and lines exhibiting palmitic acid contents of at least about 18.0% up to 30.0% or more. The novel soybean lines are obtained from a soybean seed designated A1937NMU-85 and its descendants, particular desirable progeny resulting from the cross of A1937NMU-85 with ElginEMS-421, and further with the cross of selected progeny with A89-259098.


Optoelectronic System For Implementation Of Iterative Computer Tomography Algorithms, Tongxin Lu, Satish S. Udpa Aug 1997

Optoelectronic System For Implementation Of Iterative Computer Tomography Algorithms, Tongxin Lu, Satish S. Udpa

Iowa State University Patents

An optoelectronic tomographic reconstruction system utilizes spacial light modulators in charge couple devices to perform projection iterative reconstruction techniques and simultaneous iterative reconstruction techniques. A back projection processor uses a linear array of analog spacial light modulators in a cylindrical lens, an image detection array, and an image rotator. The image rotator smears a projected image at the same angle as the projection was taken. The back projection processor thus smears the projection back to the image space. An optoelectronic forward projection processor uses an spacial light modulator array, an image rotator, and an image detecting array. A reconstructed image ...


Ketodiacid Compounds That Inhibit Nematode Egg Hatching, George A. Kraus, Gregory L. Tylka Jul 1997

Ketodiacid Compounds That Inhibit Nematode Egg Hatching, George A. Kraus, Gregory L. Tylka

Iowa State University Patents

A method for inhibiting hatching of soybean cyst nematode eggs is provided comprising contacting said eggs with an effective inhibitory amount of a compound of formula (I): ##STR1## wherein R.sup.1 is H or OH, R.sup.2 is H or OH, R.sup.3 is H or (C.sub.1 -C.sub.4)alkyl, R.sup.4 is H or (C.sub.1 -C.sub.4)alkyl, R.sup.5 and R.sup.6 are individually H, (C.sub.1 -C.sub.5)alkyl, C.sub.3 -C.sub.6 (cycloalkyl)alkyl, C.sub.5 -C.sub.7 ...


Sonic Spectrometer And Treatment System, Bodgan J. Slomka Jun 1997

Sonic Spectrometer And Treatment System, Bodgan J. Slomka

Iowa State University Patents

A novel system and method for treating an object with sonic waveforms. A traveling broad-band sonic waveform containing a broad-band of sonic frequencies is radiated at the object. A traveling reflected sonic waveform containing sonic frequencies reflected by the object is received in response to the traveling broad-band sonic waveform. A traveling transmitted sonic waveform containing sonic frequencies transmitted through the object is also received in response to the traveling broad-band sonic waveform. In a resonance mode, the frequency spectra of the broad-band and reflected sonic waveforms is analyzed so as to select one or more sonic frequencies that cause ...


Apparatus And Method For Driving An Ultrasonic Transducer, Satish S. Udpa, Srivatsa Vasudevan Jun 1997

Apparatus And Method For Driving An Ultrasonic Transducer, Satish S. Udpa, Srivatsa Vasudevan

Iowa State University Patents

A method and apparatus for electronically driving an ultrasonic acoustic transducer. The transducer is operable in two modes; in a first mode, the lock-in frequency of the transducer is determined; in a second mode, the lock-in frequency determined in the first mode is used to modulate a tone-burst pulse to drive the transducer in an efficient manner. Operating in the first mode, the lock-in frequency is determined by exciting the transducer with a series of tone bursts, where each tone burst comprises an electronic pulse modulated by a tone of one frequency selected from a range of frequencies, and measuring ...


Root Preferential Promoter, James T. Colbert, Bruce M. Held, Eve S. Wurtele, Paul S. Dietrich May 1997

Root Preferential Promoter, James T. Colbert, Bruce M. Held, Eve S. Wurtele, Paul S. Dietrich

Iowa State University Patents

No abstract provided.


Optical Devices Using An External Cavity Semiconductor Laser, Russell W. Chung, Robert J. Weber May 1997

Optical Devices Using An External Cavity Semiconductor Laser, Russell W. Chung, Robert J. Weber

Iowa State University Patents

A dual-mode optical device selectively operative in signal generation and amplification modes is disclosed herein. The dual-mode device includes a body of semiconductor material having opposed from and rear facets. During operation in the amplification mode, light is input through the front facet and is amplified within the body of the optical gain material. An at least partially optically reflective surface is positioned a first predetermined distance from one of the facets during operation of the device in the amplification mode. In the signal generation mode, the at least partially optically reflective surface is positioned a second predetermined distance from ...


Method For Measuring Muscle Mass, Steven L. Nissen, John A. Rathmacher, Paul J. Flakoll May 1997

Method For Measuring Muscle Mass, Steven L. Nissen, John A. Rathmacher, Paul J. Flakoll

Iowa State University Patents

A method for determining muscle mass in a human subject useful for monitoring athletic conditioning, weight loss programs, nutritional deficiencies, and disease states which cause muscle wasting is provided comprising administration of a bolus dose of a metabolic marker for 3-methylhistidine, the use of a three-compartment model to describe data from blood samples collected periodically thereafter, and calculation of muscle mass as a function of specific values generated by the model.


Method Of Isolating An Analyte Using A Solid Phase Extraction Medium, James S. Fritz, Philip J. Dumont, Donald F. Hagen, Craig G. Markell, Luther W. Schmidt Apr 1997

Method Of Isolating An Analyte Using A Solid Phase Extraction Medium, James S. Fritz, Philip J. Dumont, Donald F. Hagen, Craig G. Markell, Luther W. Schmidt

Iowa State University Patents

A functionalized macroporous poly(styrene divinylbenzene) particle comprises at least one ionic functional group covalently bonded thereto, the functionalized particle having sorptive capability towards an analyte, said functional group being present in the range of 0.1 to 2.5 milliequivalents per gram of poly(styrene divinylbenzene). The functionalized particles can be used in a packed column or enmeshed in a nonwoven web for utility in solid phase extraction applications.


Soybeans And Soybeans Products Having High Palmitic Acid Content, Walter R. Fehr, Earl G. Hammond Feb 1997

Soybeans And Soybeans Products Having High Palmitic Acid Content, Walter R. Fehr, Earl G. Hammond

Iowa State University Patents

A method is described for producing soybean varieties and lines exhibiting palmitic acid contents of at least about 18.0% up to 30.0% or more. The novel soybean lines are obtained from a soybean seed designated A1937NMU-85 and its descendants, particular desirable progeny resulting from the cross of A1937NMU-85 with ElginEMS-421, and further with the cross of selected progeny with A89-259098.


Photoacoustic Measurement Of Unburned Carbon In Fly-Ash, David Waller, Robert C. Brown Jan 1997

Photoacoustic Measurement Of Unburned Carbon In Fly-Ash, David Waller, Robert C. Brown

Iowa State University Patents

The present invention provides a method and an apparatus for measuring the amount of unburned carbon in a sample of fly ash using infrared photoacoustic absorption. One preferred method according to the present invention involves directing modulated infrared radiation at a sample of fly ash and measuring the acoustic signal produced when the unburned carbon in the sample absorbs the radiation producing a thermal wave which propagates through the sample to generate a minute acoustic wave at interfaces between the carbon particles and gas surrounding the particles. One preferred apparatus includes a source of modulated infrared radiation, a chamber for ...


Palladium Catalyzed Annulation Of Internal Alkynes, Richard C. Larock Jan 1997

Palladium Catalyzed Annulation Of Internal Alkynes, Richard C. Larock

Iowa State University Patents

A method is provided for the regioselective, palladium catalyzed carbo- or heteroannulation of internal alkynes by aryl iodides containing o-substituted side chains to yield aromatic carbocyclic and heterocyclic ring systems.


Reacting Interior Protein Of Grain To Fluoresce, Gerald Davis Christenbury, Wesley F. Buchele Jan 1997

Reacting Interior Protein Of Grain To Fluoresce, Gerald Davis Christenbury, Wesley F. Buchele

Iowa State University Patents

A method of measuring mechanical damage to a grain, such as corn, includes applying a reacting solution to a sample of corn. The solution contains a material, such as 8-anilino-1-naphthalene sulfonic acid, that reacts selectively with the damaged portion of the corn kernels, i.e., the internal protein that is exposed when the outer shell is penetrated or breached. Excess solution is washed off; and the kernels are dried for convenience of handling. The dried corn is ground to a uniform fineness and then spread over a predetermined area. What is inherently a three-dimensional or volume phenomena (damage) is converted ...