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0.5 μm E/D AlGaAs/GaAs heterostructure field effect transistor technology with DFET threshold adjust implant

Description: A doped-channel heterostructure field effect transistor (H-FET) technology has been developed with self-aligned refractory gate processing and using both enhancement- and depletion-mode transistors. D-HFET devices are obtained with a threshold voltage adjust implant into material designed for E-HFET operation. Both E- and D-HFETs utilize W/WSi bilayer gates, sidewall spacers, and rapid thermal annealing for controlling short channel effects. The 0.5 {mu}m E- HFETs (D-HFETs) have been demonstrat… more
Date: April 1997
Creator: Baca, A. G.; Sherwin, M. E.; Zolper, J. C.; Shul, R. J.; Briggs, R. D.; Heise, J. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A 1.8 K test facility for superconducting RF cavities

Description: To demonstrate the feasibility of superconducting RF technology for a high energy e{sup +}/e{sup {minus}} collider, a research and development program has begun with collaborators from Europe, Asia, and North America. The immediate goal of the R&D program is to build and operate a 50 meter-long linac at DESY with 1.3 GHz superconducting RF cavities at a temperature of 1.8 K - 2.0 K and an accelerating gradient of 15 MV/meter. The refrigeration for the test system at DESY initially will have a c… more
Date: April 1, 1994
Creator: Horlitz, G.; Knopf, U.; Lange, R.; Petersen, B.; Sellmann, D.; Trines, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A 1-Joule laser for a 16-fiber injection system

Description: A 1-J laser was designed to launch light down 16, multi-mode fibers (400-{micro}m-core dia.). A diffractive-optic splitter was designed in collaboration with Digital Optics Corporation (DOC), and was delivered by DOC. Using this splitter, the energy injected into each fiber varied <1%. The spatial profile out of each fiber was such that there were no ''hot spots,'' a flyer could successfully be launched and a PETN pellet could be initiated. Preliminary designs of the system were driven by sy… more
Date: April 6, 2004
Creator: Honig, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

1+ -n+ ECR Ion Source Development Test Stand

Description: A test stand for the investigation of 1+-n+ charge boosting using an ECR ion sources is currently being assembled at the Texas A&M Cyclotron Institute. The ultimate goal is to relate the charge-boosting of ions of stable species to possible charge-boosting of ions of radioactive species extracted from the diverse, low-charge-state ion sources developed for radioactive ion beams.
Date: April 7, 2006
Creator: May, Donald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

2\beta + \gamma from B^0 to D^\mp K^0 \pi^\pm Decays at BaBar: aSimulation Study

Description: The authors present the results of a simulation study to perform the extraction of 2{beta} + {gamma} from B{sup 0} {yields} D{sup {-+}}K{sup 0}{pi}{sup {+-}} decays through a time-dependent Dalitz analysis of BaBar data.
Date: April 16, 2007
Creator: Polci, Francesco; Schune, Marie-Helene; Stocchi, Achille & /Orsay, LAL
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

2-D and 3-D Elastic Modeling with Shared Seismic Models

Description: Several elastic models, both 2-D and 3-D, are being built for use in calculating synthetic elastic seismic data. The models will be made available to the research community, along with the synthetic data that are being calculated from them. These shared models have been proposed or contributed by participants in a collaborative industry, national laboratory, and university research project. The purpose of the modeling is to provide synthetic data to better understand elastic wave propagation an… more
Date: April 30, 2002
Creator: House, L.; Marfurt, K. J.; Larsen, S. & Martin, G. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A 3-Axis Force Balanced Accelerometer Using a Single Proof-Mass

Description: This paper presents a new method for wideband force balancing a proof-mass in multiple axes simultaneously. Capacitive position sense and force feedback are accomplished using the same air-gap capacitors through time multiplexing. Proof of concept is experimentally demonstrated with a single-mass monolithic surface micromachined 3-axis accelerometer.
Date: April 1997
Creator: Lemkin, M.A.; Boser, B.E.; Auslander, D. & Smith, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A 3-D Model of Signaling and Transport Pathways in Epithelial Cells

Description: A 3-dimensional computer model was developed to simulate the spatial and chemical evolution of calcium ions inside an array of human epithelial kidney cells. This is a prototype model, intended to develop a methodology to incorporate much more complex interactions of metabolic and other processes within many types of cells and lead to increased ability to predict cellular responses to disease as well as to chemical and biological warfare situations. Preliminary tests of the model are described.
Date: April 1, 2005
Creator: Quong, Andrew A. & Westbrook, Charles K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A 3-Dimensional discrete fracture network generator to examine fracture-matrix interaction using TOUGH2

Description: Water fluxes in unsaturated, fractured rock involve the physical processes occurring at fracture-matrix interfaces within fracture networks. Modeling these water fluxes using a discrete fracture network model is a complicated effort. Existing preprocessors for TOUGH2 are not suitable to generate grids for fracture networks with various orientations and inclinations. There are several 3-D discrete-fracture-network simulators for flow and transport, but most of them do not capture fracture-matrix… more
Date: April 9, 2003
Creator: Ito, Kazumasa & Yongkoo, Seol
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

3-dimensional wells and tunnels for finite element grids

Description: Modeling fluid, vapor, and air injection and extraction from wells poses a number of problems. The length scale of well bores is centimeters, the region of high pressure gradient may be tens of meters and the reservoir may be tens of kilometers. Furthermore, accurate representation of the path of a deviated well can be difficult. Incorporating the physics of injection and extraction can be made easier and more accurate with automated grid generation tools that incorporate wells as part of a bac… more
Date: April 1, 1996
Creator: Cherry, T.A.; Gable, C.W. & Trease, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[3 Letters from Donald J. Maison]

Description: Copies of three letters from Donald J. Maison: a carbon copy of a letter from Maison to Chief Prosecutor (dated April 16, 1980), copy of a letter from Maison to Steve Tokoley (dated April 7, 1980), and carbon copy of letter from Maison to Bill Arnold (dated March 26, 1980).
Date: April 16, 1980
Creator: Maison, Donald J.
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections

[3 Levels of Interactions presentation at APAEC 2011]

Description: Photograph of a presentation "3 Levels of Interactions" at APAEC 2011, held by UNT Special Collections. The image shows a room filled with people sitting down, a presenter can be seen at the front of the room near the top right. On the top left a projector screen can be seen, with it containing a chart titled "3 Levels of Interactions" with two columns following it. APAEC stands for Asian Pacific American Empowerment Conference, an annual conference that happens every year at UNT.
Date: April 20, 2011
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
open access

4-Coumarate 3-hydroxylase in the lignin biosynthesis pathway is a cytosolic ascorbate peroxidase

Description: Article describes an enzyme catalyzing the direct 3-hydroxylation of 4-coumarate to caffeate in lignin biosynthesis as a bifunctional peroxidase that oxidizes both ascorbate and 4-coumarate at comparable rates.
Date: April 30, 2019
Creator: Barros, Jaime; Escamilla-Treviño, Luis; Song, Luhua; Rao, Xiaolan; Serrani-Yarce, Juan Carlos; Docampo-Palacios, Maite et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
open access

[4-Day Itinerary for Regional Institute Directors' Meeting]

Description: A detailed document outlining the meticulously planned itinerary for the upcoming 4-day Regional Institute Directors' Meeting. Explore the scheduled discussions, workshops, and strategic sessions designed to facilitate collaboration and advance regional educational initiatives.
Date: 1996-04-10/1996-04-14
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

4. International reservoir characterization technical conference

Description: This volume contains the Proceedings of the Fourth International Reservoir Characterization Technical Conference held March 2-4, 1997 in Houston, Texas. The theme for the conference was Advances in Reservoir Characterization for Effective Reservoir Management. On March 2, 1997, the DOE Class Workshop kicked off with tutorials by Dr. Steve Begg (BP Exploration) and Dr. Ganesh Thakur (Chevron). Tutorial presentations are not included in these Proceedings but may be available from the authors. The… more
Date: April 1997
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A 5-cm dipole for the SSC-DE-1

Description: A 5cm SSC superconducting dipole that develops 6.6 tesla at 5790 A is proposed. The two layer magnet has 12% more transfer function than the present design as a result of using thin collars and close in'' iron. The thin collars provide precise positioning of the coils; they also provide minimum prestress (perhaps 2000 psi) as aid for magnet assembly. A welded skin around the iron provides the final prestress and shapes and the coil geometry. A prestressed aluminum bar placed between the vertica… more
Date: April 30, 1990
Creator: Caspi, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[5 men playing basketball]

Description: Photograph of five men playing a game of basketball. Three men wear dark colored t-shirts, one of which has the number 3 on the back. The other two wear white shirts. All five men wear shorts. The man with the 3 on his back is in mid-jump, holding the ball aloft with both hands. The corner of the basketball goal peaks on the top of the photo.
Date: April 1961
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[6 O'Clock channel 5 news team]

Description: Photograph of the 6 O'Clock channel 5 news team. From left to right: Boyd Matson, Chip Moody, Ward Andrews, Russ Bloxom and Harold Taft. The newsmen can be seen in front of a blue wall. All of the men can be seen wearing suits and ties. Chip Moody and Ward Andrews can be seen wearing black suits, while Russ Bloxom wears a gray suit and Harold Taft wears a plaid one. Boyd Matson can be seen on the left hand side wearing a white suit. Matson and Taft sit behind desks with the Channel 5 logo on th… more
Date: April 1, 1974
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections

[6 O'Clock channel 5 news team, 2]

Description: Photograph of the 6 O'Clock channel 5 news team. From left to right: Boyd Matson, Chip Moody, Ward Andrews, Russ Bloxom and Harold Taft. The newsmen can be seen in front of a blue wall. All of the men can be seen wearing suits and ties. Chip Moody and Ward Andrews can be seen wearing black suits, while Russ Bloxom wears a gray suit and Harold Taft wears a plaid one. Boyd Matson can be seen on the left hand side wearing a white suit. Matson and Taft sit behind desks with the Channel 5 logo on th… more
Date: April 1, 1974
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
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