Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Mechanical Engineering (4546)
- Physical Sciences and Mathematics (4187)
- Education (4008)
- Other Mechanical Engineering (3960)
- Arts and Humanities (3482)
-
- Science and Mathematics Education (3443)
- Energy Systems (3406)
- History (3404)
- History of Science, Technology, and Medicine (3398)
- United States History (3398)
- Civil and Environmental Engineering (2277)
- Bioresource and Agricultural Engineering (1371)
- Electrical and Computer Engineering (1095)
- Computer Engineering (1069)
- Operations Research, Systems Engineering and Industrial Engineering (764)
- Environmental Engineering (724)
- Biomedical Engineering and Bioengineering (697)
- Nanoscience and Nanotechnology (683)
- Other Civil and Environmental Engineering (611)
- Engineering Science and Materials (600)
- Mechanics of Materials (560)
- Other Engineering Science and Materials (539)
- Higher Education (483)
- Biological Engineering (455)
- Transportation Engineering (448)
- Civil Engineering (436)
- Life Sciences (415)
- Chemical Engineering (332)
- Environmental Sciences (321)
- Keyword
-
- NDOR (139)
- Transportation (94)
- Road (72)
- Evapotranspiration (53)
- Runoff (50)
-
- Machine learning (49)
- Simulation (45)
- Safety (43)
- Water quality (43)
- Manure management (42)
- Bridge (39)
- Concrete (38)
- Nebraska (38)
- Irrigation (36)
- Phosphorus (34)
- Manure runoff (31)
- Remote sensing (31)
- Modeling (30)
- Street (30)
- 1957 (29)
- Pavement (29)
- Design (28)
- Agriculture (27)
- Highway Safety (27)
- Nitrogen (27)
- Land application (26)
- Precision agriculture (26)
- UAV (25)
- Highway (24)
- Image processing (24)
- Publication Year
- Publication
-
- Nebraska Tractor Tests (3397)
- Department of Agricultural and Biological Systems Engineering: Faculty Publications (898)
- Department of Electrical and Computer Engineering: Faculty Publications (733)
- Department of Mechanical and Materials Engineering: Faculty Publications (634)
- ACUTA Newsletters (383)
-
- United States Department of Energy: Publications (355)
- Nebraska Department of Transportation: Research Reports (335)
- Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research (220)
- Department of Civil and Environmental Engineering: Faculty Publications (208)
- School of Computing: Dissertations, Theses, and Student Research (208)
- Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research (203)
- Durham School of Architectural Engineering and Construction: Faculty Publications (169)
- Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research (164)
- United States Army: Publications (164)
- Department of Electrical and Computer Engineering: Dissertations, Theses, and Student Research (158)
- United States Army Corps of Engineers, Omaha District (146)
- Mid-America Transportation Center: Final Reports and Technical Briefs (141)
- Daugherty Water for Food Global Institute: Faculty Publications (109)
- Department of Electrical and Computer Engineering: Faculty Publications (to 2015) (107)
- United States Environmental Protection Agency: Publications (96)
- Nebraska Center for Materials and Nanoscience: Faculty Publications (94)
- Department of Agricultural and Biological Systems Engineering: Presentations and White Papers (92)
- United States Department of Defense Military Intelligence (88)
- Department of Engineering Mechanics: Faculty Publications (80)
- Materials Research Science and Engineering Center: Faculty Publications (74)
- Honors Program: Senior Projects (Public) (72)
- Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023– (69)
- Lester F. Larsen Tractor Museum: Planning and Development Documents (69)
- United States Department of Transportation: Publications (66)
- Department of Chemical and Biomolecular Engineering: Patents (65)
- Publication Type
- File Type
Articles 8311 - 8340 of 11222
Full-Text Articles in Engineering
Nebraska Summary 289: John Deere 6310 Powrquad Diesel 16-Speed, Nebraska Tractor Test Lab
Nebraska Summary 289: John Deere 6310 Powrquad Diesel 16-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA
The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data.
EXPLANATION OF THE TEST PROCEDURES
Purpose
The purpose of …
Nebraska Summary 300: Massey Ferguson 6245 Diesel 32-Speed, Nebraska Tractor Test Lab
Nebraska Summary 300: Massey Ferguson 6245 Diesel 32-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
ABOUT THE TEST REPORT AND USE OF THE DATA
The test data contained in this report are a tabulation of the results of a series of tests. Due to the restricted format of these pages, only a limited amount of data and not all of the tractor specifications are included. The full OECD report contains usually about 30 pages of data and specifications. The test data were obtained for each tractor under similar conditions and therefore, provide a means of comparison of performance based on a limited set of reported data.
EXPLANATION OF THE TEST PROCEDURES
Purpose
The purpose of …
Test 1899: Case Ih Cx 100/C 100 Diesel, Nebraska Tractor Test Lab
Test 1899: Case Ih Cx 100/C 100 Diesel, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 1745: John Deere 8200t Dieel 16-Speed, Nebraska Tractor Test Lab
Test 1745: John Deere 8200t Dieel 16-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1746: John Deere 8300t Diesel 16-Speed, Nebraska Tractor Test Lab
Test 1746: John Deere 8300t Diesel 16-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE
General
Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.
The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1749: Caterpiller Challenger 75e Diesel 10-Speed`, Nebraska Tractor Test Lab
Test 1749: Caterpiller Challenger 75e Diesel 10-Speed`, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE
General
Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.
The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1750: Caterpiller Challenger 85e Diesel 10-Speed, Nebraska Tractor Test Lab
Test 1750: Caterpiller Challenger 85e Diesel 10-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE
General
Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.
The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1753: White 8410 Diesel 18-Speed, Nebraska Tractor Test Lab
Test 1753: White 8410 Diesel 18-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE
General
Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure.
The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1757: John Deere 5510 Diesel 9-Speed, Nebraska Tractor Test Lab
Test 1757: John Deere 5510 Diesel 9-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Test 1803: Kubota M6800dt Diesel, Nebraska Tractor Test Lab
Test 1803: Kubota M6800dt Diesel, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 1744: John Deere 8100t Diesel 16-Speed, Nebraska Tractor Test Lab
Test 1744: John Deere 8100t Diesel 16-Speed, Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …
Electromagnetic Beam Directing Means-Sample Analysis System Stage, And Method Of Use, Daniel W. Thomspon, Darin W. Glenn, John A. Woollam
Electromagnetic Beam Directing Means-Sample Analysis System Stage, And Method Of Use, Daniel W. Thomspon, Darin W. Glenn, John A. Woollam
Department of Electrical and Computer Engineering: Faculty Publications
Disclosed is an electromagnetic beam directing means for use with sample analysis systems, such as relfectometers, ellipsometers and polarimeters and the like, use of which facilitates investigation of sample systems which are not mounted to a sample analysis system sample system supporting stage. The present invention eliminates the requirement os extensice sample analysis system component realignment when alternatingly performing analysis of sample systems mounted upon, and mounted other than upon, a sample analysis system sample system supporting stage.
A Multithreaded Scheduler For A High-Speed Simulator, Gene Saghi, Kirk Reinholtz, Paul Savory
A Multithreaded Scheduler For A High-Speed Simulator, Gene Saghi, Kirk Reinholtz, Paul Savory
Department of Industrial and Management Systems Engineering: Faculty Publications
The Cassini spacecraft is on its journey to Saturn to perform a close-up study of the Saturnian system; its rings, moons, magneto-sphere, and the planet itself. Sequences of commands will be sent to the spacecraft by ground personnel to control every aspect of the mission. To validate and verify these command sequences, a bit-level, high-speed simulator (HSS) has been developed. To maximize performance, the HSS is implemented with multiple threads and runs on a multiprocessor system. A key component of the HSS is the scheduler, which controls the execution of the simulator. The general framework of the scheduler can be …
A New Radiosonde System For Profiling The Lower Troposphere, Brian R Corner, Robert D. Palmer
A New Radiosonde System For Profiling The Lower Troposphere, Brian R Corner, Robert D. Palmer
Department of Electrical and Computer Engineering: Faculty Publications
A new, inexpensive radiosonde transmitter and receiver system has been developed for measuring wind field inhomogeneities in the planetary boundary layer using multiple simultaneously launched balloons. The radio- sondes use a narrowband-frequency-modulated carrier signal to transmit atmospheric pressure and temperature information to a surface receiver. The pressure and temperature data transmitted by the radiosondes allow their height above the surface to be ascertained. In addition, the radiosondes can be tracked with a photographic camera system to provide the azimuth and elevation angles of the radiosondes during their ascent, so that their three-dimensional horizontal position can be determined. By tracking the …
Ds Cdma Scheme For Watm Lan With Error Control, Beata J. Wysocki, Tadeusz A. Wysocki, Hans J. Zepernick
Ds Cdma Scheme For Watm Lan With Error Control, Beata J. Wysocki, Tadeusz A. Wysocki, Hans J. Zepernick
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh- Rademacber functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of crosscorrelation between any pair of the channels is shown. The resultant system BER as well as the distribution of errors within WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme, capable of correcting 10 errors, the number of WATM cells which would require retransmission is …
Error Performance Of The 13-Channel Ds Cdma Watm Lan, Beata J. Wysocki, Tadeusz Wysocki, Hans J. Zepernick
Error Performance Of The 13-Channel Ds Cdma Watm Lan, Beata J. Wysocki, Tadeusz Wysocki, Hans J. Zepernick
Department of Electrical and Computer Engineering: Faculty Publications (to 2015)
In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh-Rademacher functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of cross-correlation between any pair of the channels is shown. The resultant system BER and the distribution of errors within encapsulated WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme, capable of correcting 10 errors, the number of WATM cells which would require retransmission is in the …
Optical Determination Of Shallow Carrier Profiles Using Fourier Transform Infrared Ellipsometry, Thomas E. Tiwald, John A. Woollam, John A. Woollam
Optical Determination Of Shallow Carrier Profiles Using Fourier Transform Infrared Ellipsometry, Thomas E. Tiwald, John A. Woollam, John A. Woollam
Department of Electrical and Computer Engineering: Faculty Publications
Dopant profiles were determined by ex situ Fourier transform infrared variable-angle spectroscopic ellipsometry. The technique exploits carrier absorption in the mid-infrared spectral range and combines the sensitivity of ellipsometry with a simple Drude free carrier absorption model to determine the carrier profile. The noncontact, nondestructive nature of the measurement suggests both ex situ and in situ monitoring and control applications. In this study, the carrier profiles were modeled as graded multilayers that can be constrained to a given functional form (Gaussian, erfc, etc.) when desired. Boron and arsenic implanted silicon wafers that were rapid thermal anneal and furnace annealed were …
Missouri River Erosion Update 1941-1998 Yankton Sioux Reservation Marty, South Dakota, Stephen Cournoyer Jr.
Missouri River Erosion Update 1941-1998 Yankton Sioux Reservation Marty, South Dakota, Stephen Cournoyer Jr.
United States Army Corps of Engineers, Omaha District
Pacific GeoScience has completed a revised study of the erosion of Tribal lands (tracts) located along the Missouri River within the yankton Sioux Reservation. This riverbank erosion is related to the construction and operation of Fort Randall Dam. This study evaluated the erosion and accretion of Tribal tracts from 1941 through 1998 (the study period), and estimates the value of the net land eroded as a result of dam construction and operation. This report supersedes the ENVIRON report of 1992 and presents a more comprehensive evaluation of the monetary value of the lost acreage. This study utilizes the current tract …
Production Of Ethers Of Gycerol From Crude Glycerol: The By-Product Of Biodiesel Production, Hossein Noureddini, W. R. Dailey, B. A. Hunt
Production Of Ethers Of Gycerol From Crude Glycerol: The By-Product Of Biodiesel Production, Hossein Noureddini, W. R. Dailey, B. A. Hunt
Papers in Biomaterials
Methyl esters of fatty acids (also known as biodiesel), made from the transesterification of vegetable oils and animal fats with methanol, have shown a lot of promise as alternative diesel fuels. Glycerol is the inevitable by-product of the transesterification process. While there are existing markets for glycerol, a significant increase in availability of glycerol, resulting from the expanded use of vegetable oils and animal fats, would destabilize the glycerol market. Direct addition of glycerol to the fuel is not possible, however, derivatives of glycerol such as ethers have potential for use as additives with biodiesel, diesel or biodiesel-diesel blends. In …
Design Of Tapered Augers For Uniform Unloading Particulate Material From Rectangular Cross-Section Containers, M. S. Burr, Michael F. Kocher, David D. Jones
Design Of Tapered Augers For Uniform Unloading Particulate Material From Rectangular Cross-Section Containers, M. S. Burr, Michael F. Kocher, David D. Jones
Department of Agricultural and Biological Systems Engineering: Faculty Publications
The design equation for an auger to provide uniform unloading of particulate material from a container with a rectangular cross-section (Jones and Kocher, 1995) was revised to account for the minimum flighting height that could effectively unload particles with a known average smallest diameter. A minimum flighting height that was about 64% of the average smallest diameter of the particles was experimentally determined to obtain mean slopes of the top surface of the material not significantly different from zero for screened soybeans. A linear taper that best fit the square root curve for the inside diameter of the auger was …
Matrix-Enhanced Calibration Procedure For Multivariate Calibration Models With Near-Infrared Spectra, Mark R. Riley, Mark A. Arnold, David W. Murhammer
Matrix-Enhanced Calibration Procedure For Multivariate Calibration Models With Near-Infrared Spectra, Mark R. Riley, Mark A. Arnold, David W. Murhammer
Department of Agricultural and Biological Systems Engineering: Faculty Publications
A novel method is introduced for developing calibration models for the spectroscopic measurement of chemical concentrations in an aqueous environment. To demonstrate this matrix-enhanced calibration procedure, we developed calibration models to quantitate glucose and glutamine concentrations in an insect cell culture medium that is a complex mixture of more than 20 components, with three components that manifest significant concentration changes. Accurate calibration models were generated for glucose and glutamine by using a calibration data set composed of 60 samples containing the analytes dissolved in an aqueous buffer along with as few as two samples of the analytes dissolved in culture …
Biodiesel Fuel From Animal Fat. Ancillary Studies On Transesterification Of Beef Tallow, Fangrui Ma, L. Davis Clements, Milford Hanna
Biodiesel Fuel From Animal Fat. Ancillary Studies On Transesterification Of Beef Tallow, Fangrui Ma, L. Davis Clements, Milford Hanna
Nebraska Center for Biotechnology: Faculty and Staff Publications
Transesterification of beef tallow was investigated. The solubility of ethanol in beef tallow was much higher than that of methanol. At 100 °C the solubility of methanol was 19% (w/w). The solubility of ethanol in beef tallow reached 100% (w/w) at about 68 °C. For the distribution of methanol between beef tallow methyl esters (BTME) and glycerol, the percentage of total methanol in the glycerol phase was higher than that in the fatty acid methyl ester (FAME) phase in a simulated system at room temperature. At 65-80 °C, however, the percentage of total methanol in FAME (60% (w/w)) was higher …
Relationships Among Grain Sorghum Quality Factors, Roberto A. Buffo, Curtis L. Weller, Anne M. Parkhurst
Relationships Among Grain Sorghum Quality Factors, Roberto A. Buffo, Curtis L. Weller, Anne M. Parkhurst
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Correlations among grain sorghum quality factors (proximate composition, physical properties, and water absorption properties) were evaluated. Samples of 46 commercial hybrids (24 and 22 from crop years 1993 and 1994) were analyzed for starch, protein, crude free fat, test weight, absolute density, 1,000 kernel weight, percent kernel abraded, water absorption index, initial water absorption rate, and moisture saturation point. Test weight, absolute density, and percent kernel abraded were positively correlated among themselves (r > 0.5). Protein was negatively correlated with both test weight and absolute density (r < -0.5), while moisture saturation point showed negative correlations with test weight, absolute density, 1,000 kernel weight, and percent kernel abraded (r < -0.4). Principal component factor analysis through the covariance matrix explained 95% of the total variation of quality factors among hybrids (two factors), and, through the correlation matrix, 85% of the total variation (five factors). Water absorption rate decreased with increasing starch content of grain sorghum kernels as water absorption rate increased and amount of water for saturation decreased with softening of kernels.
Opto-Electronic Sensor System For Rapid Evaluation Of Planter Seed Spacing Uniformity, Michael F. Kocher, Yubin Lan, Changhe Chen, John A. Smith
Opto-Electronic Sensor System For Rapid Evaluation Of Planter Seed Spacing Uniformity, Michael F. Kocher, Yubin Lan, Changhe Chen, John A. Smith
Department of Agricultural and Biological Systems Engineering: Faculty Publications
An opto-electronic seed spacing evaluation system that measured time intervals between seeds and detected front-to-back location of seed drop events relative to the planter was used to rapidly determine planter seed spacing uniformity in the laboratory. The seed detection sensor for the opto-electronic system consisted of a rectangular photogate with 24 phototransistors receiving light beams from 24 LEDs opposite to them. The system also included circuitry to interface the photogate with a digital I/O board in a personal computer. The opto-electronic system was tested with three planter configurations. During the tests, the photogate was positioned beneath the seed drop tube …
Composition Containing A Polymer And Conductive Filler And Use Thereof, Ravi F. Saraf
Composition Containing A Polymer And Conductive Filler And Use Thereof, Ravi F. Saraf
Department of Chemical and Biomolecular Engineering: Patents
A composition containing a polymeric matrix and a conductive filler component is provided. The conductive filler component comprises conductive particles and a polymer selected from the group consisting of substituted and unsubstituted polyanilines, substituted and unsubstituted polyparaphenylenevinylenes, substituted and unsubstituted polythiophenes, substituted and unsubstituted polyazines, substituted and unsubstituted polyparaphenylenes, substituted and unsubstituted polyfuranes, substituted and unsubstituted polypyrroles, substituted and unsubstituted polyselenophene, substituted and unsubstituted poly-p-phenylene sulfides and substiututed and unsubstituted polyacetylenes, and mixtures thereof, and copolymers thereof. Compositions of the present invention are useful as corrosion protecting layers for metal substrates, for electrostatic discharge protection, electromagnetic interference shielding, and as …
Acuta Enews December 1997, Vol. 26, No. 12
Acuta Enews December 1997, Vol. 26, No. 12
ACUTA Newsletters
In This Issue
Sixth Annual Institutional Excellence Awards Competition
Slamming on the Rise
President's Column
Slamming
Board Report
A Great Seminar
Board Approves New Appointments
Meet Me at.... UM
Technology Timetable
On the Move
1998 ACUTA Events
Spotlight
DC at a Glance
Journal Editorial Calendar for 1998
Welcome New Members
Tractor Test Museum Commttee Minutes November 19th, 1997, Tractor Museum
Tractor Test Museum Commttee Minutes November 19th, 1997, Tractor Museum
Lester F. Larsen Tractor Museum: Planning and Development Documents
Update on Roof Progress Big Red Club State Fair Project
Infrared Optical Properties Of Mixed-Phase Thin Films Studied By Spectroscopic Ellipsometry Using Boron Nitride As An Example, Mathias Schubert, B. Rheinlander, E. Franke, H. Neumann, T. E. Tiwald, John A. Woollam
Infrared Optical Properties Of Mixed-Phase Thin Films Studied By Spectroscopic Ellipsometry Using Boron Nitride As An Example, Mathias Schubert, B. Rheinlander, E. Franke, H. Neumann, T. E. Tiwald, John A. Woollam
Department of Electrical and Computer Engineering: Faculty Publications
We present a microstructure-dependent anisotropic infrared-optical dielectric function model for mixed-phase polycrystalline material from which we derive the transverse and longitudinal-optical modes observable in thin films. Infrared ellipsometry over the wavelength range from 700 to 3000 cm-1 is then used to determine the phase and microstructure of polycrystalline and multilayered hexagonal and cubic boron nitride thin films deposited by magnetron sputtering onto (100) silicon. The ellipsometric data depend on the thin-film multilayer structure, the layer-phase composition, and the average orientation of the hexagonal grain c axes. In particular, we demonstrate the existence of spectral shifts of longitudinal optical phonons …
Crossflow Microfiltration Of Recombinant Escherichia Coli Lysates After High Pressure Homogenization, Stuart M. Bailey, Michael M. Meagher
Crossflow Microfiltration Of Recombinant Escherichia Coli Lysates After High Pressure Homogenization, Stuart M. Bailey, Michael M. Meagher
Papers in Biotechnology
Abstract: Crossflow membrane filtration was used to process recombinant Escherichia coli cell lysates containing protein inclusion bodies after high pressure homogenization. The number of passes through the high pressure homogenizer changed the viscosities and average particle sizes of the cell lysates. The different cell lysates were processed with a hollow fiber unit containing microfiltration membranes and a plate and frame unit with either ultrafiltration or microfiltration membranes. There were differences in permeate flux and protein transmission for the various membranes with the best performing membranes giving permeate fluxes greater than 60 L m−2 h−1 and protein transmissions greater than 90%. …
Acuta Enews November 1997, Vol. 26, No. 11
Acuta Enews November 1997, Vol. 26, No. 11
ACUTA Newsletters
In This Issue
Second Annual ACUTA Student Paper Competition
SLCC Telecom Bails Out
Board Report
SLCC
President's Column
Negotiating a Wireless Contract
Seminar Looks at Networks, Legislative & Regulatory Issue
Is There a Back Door to Your Long Distance?
DC at a Glance
Welcome New Members
Rat Wire Schools
Spotlight