Engineering Commons^™

Expression Of Human Protein C In Mammary Tissue Of Transgenic Mammals , William H. Velander

Department of Chemical and Biomolecular Engineering: Patents

Recombinant protein C characterized by a high percentage of active protein can be obtained in the milk of transgenic mammals that incorporate DNAs according to the present invention. Transgenic mammals of the present invention are produced by introducing into developing embryos DNA that encodes protein C, such that the DNA is stably incorporated in the DNA of germ line cells of the mature mammals and inherited in normal, mendelian fashion.

Trade-Off Study And Computer Simulation For Assessing Spacecraft Pointing Accuracy And Stability Capabilities, Marcelo C. Algrain, Richard M. Powers

Department of Electrical and Computer Engineering: Faculty Publications

A case study, written in a tutorial manner, is presented where a comprehensive computer simulation is developed to determine the driving factors contributing to spacecraft pointing accuracy and stability. Models for major system components are described. Among them are spacecraft bus, attitude controller, reaction wheel assembly, star-tracker unit, inertial reference unit, and gyro drift estimators (Kalman filter). The predicted spacecraft performance is analyzed for a variety of input commands and system disturbances. The primary deterministic inputs are the desired attitude angles and rate set points. The stochastic inputs include random torque disturbances acting on the spacecraft, random gyro bias noise, …

1995 Strategic Plan For Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Roof Repair Contacting Tractor Manufacturers Inviting Donors to be Members

Tractor Test Museum Committee Minutes December 11, 1996, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Roof Repair Inviting Donors to be Members Treasurer's Report

Ellipsometer/Polarmeterbased Process Monitor And Control System Suitable For Simultaneous Retrofit On Molecular Beam Epitaxy System Rheed/Leed Interface System, And Method Of Use, John A. Woollam, Blaine D. Johs, Peter P. Chow

Department of Electrical and Computer Engineering: Faculty Publications

A method of, and system for applying light beam producing systems, such as ellipsometers, polarimeters, polarized light reflectance and functionally similar systems, such that a beam of light produced thereby is caused to be incident upon a process element at an angle in excess of an associated Brewster angle while enabling the production of a signal sufficiently sensitive to changes in process element parameters, for use in "real-time" process element process monitoring and control, is disclosed. In addition, a process element processing system and electron beam producing system and light beam producing system combination system is taught, wherein the electron …

Ellipsometer/Polarmeter Based Process Monitor And Control System Suitable For Simultaneous Retrofit On Molecular Beam Eptaxy System Rheed/Leed Interface System, And Method Of Use, John A. Woollam, Blaine D. Johs, Peter P. Chow

Department of Electrical and Computer Engineering: Faculty Publications

A method of, and system for, applying light beam producing systems such as ellipsometers, polarimeters, polarized light reflectance and functionally similar systems, such that a beam of light produced thereby is caused to be incident upon a process element at an angle in excess of an associated Brewster angle while enabling the production of a signal sufficiently sensitive to changes in process element parameters, for use in "real-time' process element process monitoring and control, is disclosed. In addition a process element processing system and electron beam producing system and light beam producing system combination system is taught, wherein the electronbeam …

Growth Of Diamond By Rf Plasma-Assisted Chemical Vapor Deposition, Duane E. Meyer, Natale J. Ianno, John A. Woollam, A. B. Swartzlander, A. J. Nelson

Department of Electrical and Computer Engineering: Faculty Publications

A system has been designed and constructed to produce diamond particles by inductively coupled radio-frequency, plasma-assisted chemical vapor deposition. This is a low-pressure, low-temperature process used in an attempt to deposit diamond on substrates of glass, quartz, silicon, nickel, and boron nitride. Several deposition parameters have been varied including substrate temperature, gas concentration, gas pressure, total gas flow rate, rf input power, and deposition time. Analytical methods employed to determine composition and structure of the deposits include scanning electron microscopy, absorption spectroscopy, scanning Auger microprobe spectroscopy, and Raman spectroscopy. Analysis indicates that particles having a thin graphite surface, as well …

Diffuse Energy Propagation On Heterogeneous Plates: Structural Acoustics Radiative Transfer Theory, Joseph A. Turner, Richard L. Weaver

Department of Engineering Mechanics: Faculty Publications

The propagation of diffuse energy on an unwetted flat plate with attached heterogeneities is examined using a statistical, multiple scattering approach. The statistically homogeneous heterogeneities lightly couple the membrane and flexural waves. The problem is formulated in terms of the Bethe–Salpeter equation, which governs the field covariance. It is reduced to a radiative transfer equation in the limit that the attenuations per wave number are small, i.e., when the heterogeneities are weak. This radiative transfer equation governs the diffuse energy propagation as a function of space, time, and propagation direction. Solutions of the radiative transfer equation are presented for the …

Acuta Enews December 1996, Vol. 25, No. 12

ACUTA Newsletters

In This Issue

Fifth Annual Institutional Excellence Awards Competition

ACUTA News will have a new look

Welcome New Members

President's Message

Emergency Phone Provide Security

DC at a Glance

Fiber Optic Video Systems for Campus Networking

Campus News Briefs

Industry Insights

From ACUTA Headquarters

Controlling Three-Axis Attitude Rates On A Pointing System Using Nonlinear Observer And Two Axis Measurements, Marcelo C. Algrain

Department of Electrical and Computer Engineering: Faculty Publications

A new observer design method that allows for estimating the angular rates along a vehicle’s three principal axes is described. The observer uses measurements from a single two-axis angular rate sensor (gyro) and determines the rates for the third axis using a nonlinear observer. Unlike conventional approaches where the equations governing vehicle motion (Euler’s equations) are linearized and then an observer is constructed based on the linear model, this method does not require linearization of the system. Instead, a pseudo-linear representation is used. The pseudo-linear model is obtained by systematically decomposing a nonlinear system into linear and nonlinear terms. The …

Application Of Inversions To Lossless Image Compression, Ziya Arnavut

Department of Electrical and Computer Engineering: Faculty Publications

Linear prediction schemes, such as that of the Joint Photographic Experts Group (JPEG), are simple and normally produces a residual sequence with lower zero-order entropy. Occasionally the entropy of the prediction error becomes greater than that of the original image. Such situations frequently occur when the image data have discrete gray levels located within certain intervals. To alleviate this problem, various authors have suggested different preprocessing methods. However, the techniques reported require two passes. We extend the definition of Lehmer-type inversions (Lehmer 1960 and 1964) from permutations to multiset permutations and present a one-pass algorithm based on inversions of a …

Oxygen Plasma Asher Contamination: An Analysis Of Sources And Remedies, R. A. Synowicki, Jeffrey S. Hale, William A. Mcgahan, Natale J. Ianno, John A. Woollam

Department of Electrical and Computer Engineering: Faculty Publications

The low Earth orbit (LEO) environment is commonly simulated using oxygen plasma ashers to determine the effects of LEO on spacecraft materials. However, plasma ashers can also contaminate samples during plasma exposure, making them less than ideal for space simulation. This study results from attempts to minimize or eliminate contamination. Optical methods of variable angle spectroscopic ellipsometry and reflectance spectrophotometry were used to quantify contaminant stoichiometry and deposition rate. Auger electron spectroscopy identified deposited contaminants and their surface coverage. Contamination results from etching of the rubber chamber seals by the plasma. The deposited contaminant was nearly indistinguishable from fully stoichiometric …

Acuta Enews November 1996, Vol. 25, No. 11

ACUTA Newsletters

In This Issue

Univ. of Idaho: Homepage Sweet Homepage

Institutional Excellence Award

Committee Member Approved

More Angles for 809 Fraud

Welcome New Members

President's Message

The '90s: New Challenges for Telecom

DC at a Glance

Campus News Briefs

Industry Insights

Acuta Enews October 1996, Vol. 25, No. 10

ACUTA Newsletters

In This Issue

President's Message

FlexSourcing

Desk Top Video

Overheard on the Listserve

From ACUTA Headquarters

A Continuous Process For The Conversion Of Vegetable Oils Into Biodiesel, Hossein Noureddini, D Harkey, V Medikonduru

Papers in Biomaterials

Over the last few years fatty acid methyl esters have assumed importance as research has intensified on the utilization of vegetable oils and animal fats derivatives from liquid fuels (better known as biodiesel).Traditional batch processing has been an still is the most widely used process for this coversion. New and more efficient processing schemes. for large scale production of biodiesel for fuelfile1 purposes, is a. key for commercialization of biodiesel. In this, study a continuous process for the transesterification of triglycerides to methyl esters was investigated. This process is based a combined high shear and motionless reactor system. The experimental …

Acuta Enews September 1996, Vol. 25, No. 9

ACUTA Newsletters

In This Issue

From the President

New Legislation

User Group Reports

Changes Come to Campus Directories

From ACUTA Headquarters

Effect Of Antibody Orientation On Immunosorbent, Anuradha Subramanian, William H. Velander

Papers in Biotechnology

The impact of antibody orientation on immunosorbent efficiency was quantitatively assessed. A pH-dependent murine monoclonal antibody (Mab) against human protein C (hPC), recombinant hPC (rhPC) and two different immobilization chemistries and matrices were used as model systems. The lysyl groups of the rhPC were covalently modified with an acetic acid ester of N-hydroxysuccinimide and this modified rhPC was used as a Fab masking agent (FMA). The FMA was used to mask the antigen bind-ing regions (Fab) of the Mab prior to and during covalent immobilization. Thereafter, the residual active sites of the support were in-activated and the FMA was removed. …

Affinity Purification Of Biologically Active Andinactive Forms Of Recombinant Human Protein C Produced In Porcine Mammary Gland, Kevin E. Van Cott, Barry Williams Department Of Chemical Engineering,Virginia Tech University, Blacksburg, Va 24061, Usa, William H. Velander, Francis C. Gwazdauskas, Tim Lee Jerome Holland Laboratory, American Red Cross, Rockville, Md 20855, Usa, Henryk Lubon, William N. Drohan

Papers in Biotechnology

Recombinant human protein C (rhPC) secreted in the milk of transgenic pigs was studied. 'Ikansgenes having different regulatory elements of the murine milk protein, whey acidic protein, were used with cDNA and genomic human protein C (hPC) DNA sequences to obtain lower and higher expressing animals. The cDNA pigs had a range of expression of about 0.1-0.5 g/l milk. Two different genomic hPC pig lines have expressed 0.3 and 1-2 g/l, respectively. The rhPC was first purified at yields greater than 60 per cent using a monoclonal antibody (mAb) to the activation site on the heavy chain of hPC. Subsequent …

Chemcial Vapor Deposition Precursor Chemistry. 5. The Photolytic Laser Deposition Of Aluminum Thin Films By Chemical Vapor Deposition, John A. Glass, Seong-Don Hwang, Saswati Datta, Brian W. Robertson, James T. Spencer

Department of Mechanical and Materials Engineering: Faculty Publications

Thin films of very high purity aluminum were formed from the laser photolysis of trimethylamine alane (TMAA) using both ultraviolet (pulsed nitrogen) and visible (argon ion) laser irradiation on a variety of substrates including gold. Si (111), GaAs (110) and Teflon (PTFE). At thicknesses of up to 1 μm, nearly linear growth rates of 377 Ås^-1 and 112 Ås^-1 were observed. The formation of volatile species formed during the deposition of aluminum from TMAA was investigated by quadrupole mass spectrometry (QMS) of the reactant gas stream. The highest intensity post-deposition mass fragments were observed at m/z 58, …

Fabrication Of Double Side Fully Metallized Plated Thru-Holes, In Polymer Structures, Without Seeding Or Photoprocess, Ravi F. Saraf

Department of Chemical and Biomolecular Engineering: Patents

The present invention is directed to a process of a method for the full metallization of thru-holes in a polymer structure comprising the steps of applying a film-forming amount of a conductive polymer-metal composite paste to a metal cathode; bonding a patterned polymer structure to said paste; subjecting said polymer structure to an electrolytic plating bath for a time sufficient to fully metallize thru-hole surfaces in said patterned polymer structure and removing the structure from the cathode assembly. The fully metallized thru-hole polymer structure can then be cleaned and polished to produce a finished product.

Proposal For Renovation Of 1920 Tractor Test Lab Into Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Bids for Renovating Roof State Fair Display Further Funding for Renovation

Direct Chip Attachment (Dca) With Electrically Conductive Adhesives, Ravi F. Saraf

Department of Chemical and Biomolecular Engineering: Patents

A simple process for card assembly by Direct Chip Attachment (DCA) uses electrically conductive adhesives. Two methods create the same intermediate wafer product with a layer of insulative thermoplastic and conductive thermoplastic bumps. After sawing or dicing the wafer to form the chips, the chips are adhered to chip carriers with conductive pads which match the conductive thermoplastic bumps, using heat and pressure. Chips may be easily removed and replaced using heat.

Acuta Enews August 1996, Vol. 25, No. 8

ACUTA Newsletters

In This Issue

Silver Anniversary Celebration 25 Years of Excellence

President's Message

Chicago Presentations Inspire, Inform, and Entertain

Executive Director

DC at a Glance

Record Number of Exhibitors in Chicago

From ACUTA Headquarters

Sulfur Tolerant Bimetallic Zeolitic Reforming Catalysts, Gustavo F. Larsen

Department of Chemical and Biomolecular Engineering: Patents

New compositions of matter comprise a metal from the group consisting of platinum, rhodium and palladium, a metal from the first row of Group VIII of the Periodic Table and a nonacidic L-zeolite. A preferred composition is Pt--Ni/KL-zeolite. Such catalysts are prepared by coimpregnation of the zeolite with the metals. Methods of using the catalysts in reforming, aromatization or dehydrogenation are provided.

Acuta Enews July 1996, Vol. 25, No. 7

ACUTA Newsletters

In This Issue

New Board of Directors Prepares for 1996-97

ACUTA Announces Quarterly Journal

President's Message

Do You Tax Student Long Distance Bills?

DC at a Glance

University of Washington Fills Service Niche with T1 Channel Banks

How to Subscribe to ACUTA Listserves

Everyone Wants Voice Mail

Campus New Briefs

Welcome New Members

Industry Insights

Monoclonal Antibody Assay And Kit For Detecting Metal Cations In Body Fluids, Randall R. Carlson, Jay S. Stout, Dwane E. Wylie, Fred W. Wagner, Malcolm Riddell

Biological Process Development Facility: Staff Publications

The invention provides method and kits for detecting a metallic cation in a sample of a body fluid. The preferred method and kits include the use of at least two different types of antibodies having different specificities. In the preferred method, the sample of body fluid can be contacted with an effective amount of a capture antibody specific for a naturally occurring polypeptide that can bind the metallic cation to form a first antigen-antibody complex. An effective amount of an antibody specific for an epitope on a metallic cation-naturally occurring polypeptide complex or an antibody specific for a metallic cation …

Acuta 25th Annual Conference- Silver Anniversary- July 14-18, 1996- Chicago Hilton & Towers.

ACUTA: Other Publications

Registration & Hotel Information

Registration if postmarked by June 24, 1996.(Extended from June 14)

. Member Institution/Associate Member - $525. Corporate Affiliate - $525. Non-Member - $650

Registration if postmarked after June 24, 1996.

Member Institution/Associate Member - $57. Corporate Affiliate - $575 . Non-Member - $700

Hotel: Chicago Hilton & Towers

312-922-4400. Rates are $118 Single or Double. Be sure and mention the ACUTA rate! Cutoff date

for hotel is June 19,19961

Due to the popularity of this event and the Chicago destination, the hotel is full on some nights.

However, the ACUTA rate of $ll8 single/double per night …

Polyelectrolyte Dna Conjugation And Genetic Transformation Of An Animal , William H. Velander

Department of Chemical and Biomolecular Engineering: Patents

Improved cellulosic beads for use as supports in bioaffinity chromatography are produced by dissolution of cellulose in a chaotropic cellulose solvent, formation of the dissolved cellulose into droplets, and immersion of the droplets into a non-solvent capable of solvent interchange with the cellulose solvent to form generally spherical porous cellulose beads of narrow particle size distribution. The beads formed are preferably made with cellulose having a degree of polymerization between 100 and 200, and the resulting beads when saturated with water without drying contain between 1% and 7% cellulose by weight and have a particle size of at least about …

Acuta Enews June 1996, Vol. 25, No. 6

ACUTA Newsletters

In This Issue

From the President

Virtual LAN at Univ. of Mississippi

DC at a Glance

Internet Phone

From ACUTA Headquarters

United States Patent: System And Method For Compensating Polarization-Dependent Sensitivity Of Dispersive Optics In A Rotating Analyzer Ellipsometer System, Steven E. Green, Shakil A. Pittal, Blaine D. Johs, John A. Woollam, David W. Doerr, Reed A. Christenson

Department of Electrical and Computer Engineering: Faculty Publications

An ellipsometer system which includes a pivotal dispersive optics positioned to receive polychromatic light from an analyzer thereof, without further focusing after reflection from a substrate system, is presented. In addition, a rotating compensator, positioned between the analyzer and the dispersive optics, which serves to reduce detector element polarization dependent sensitivity to light entering thereto after it interacts with the dispersive optics, is disclosed. The method of the present invention can include application of mathematical correction factors to, for instance, substrate system characterizing PSI and DELTA values, or Fourier ALPHA and BETA coefficients.