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7,823 Matching Results

Start Over Month September Day 12th

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(open access)

1,3-Propanediol Made From Fermentation-Derived Malonic Acid: Office of Industrial Technologies (OIT) Agriculture Project Fact Sheet

1,3-Propanediol is one of two ingredients used in producing polytrimethylene terephthalate (PTT), a polymer which can be used in polyester and nylon applications. Researchers are developing a process to ferment biomass feedstock to malonic acid using filamentous fungi and then catalytically convert malonic acid to 1,3-propanediol.

Date: September 12, 2001

Creator: Carde, T.

Object Type: Book

System: The UNT Digital Library

E-2 (9-12-19)

Photograph of Mangum Engine 2.

Date: September 12, 2019

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

E-3 (9-12-19)

Photograph of Mangum Engine 3.

Date: September 12, 2019

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

(open access)

3-D surface profile measurements of large x-ray synchrotron radiation mirrors using stitching interferometry.

Stitching interferometry, using small-aperture, high-resolution, phase-measuring interferometry, has been proposed for quite some time now as a metrology technique to obtain 3-dimensional profiles of surfaces of oversized optical components and substrates. The aim of this work is to apply this method to the specific case of long grazing-incidence x-ray mirrors, such as those used in beamlines at synchrotron radiation facilities around the world. Both fabrication and characterization of these mirrors would greatly benefit from this technique because it offers the potential for providing measurements with accuracy and resolution better than those obtained using existing noncontact laser profilers, such as the long trace profiler (LTP). Measurement data can be used as feedback for computer-controlled fabrication processes to correct for possible topography errors. The data can also be used for simulating and predicting mirror performance under realistic conditions. A semiautomated stitching system was built and tested at the X-ray Optics Metrology Laboratory of the Advanced Photon Source at Argonne National Laboratory. The initial objective was to achieve a measurement sensitivity on the order of 1 {micro}rad rms. Preliminary tests on a 1 m-long x-ray mirror showed system repeatability of less than 0.6 {micro}rad rms. This value is comparable to that of a …

Date: September 12, 2002

Creator: Assoufid, L.; Bray, M.; Qian, J. & Shu, D.

Object Type: Article

System: The UNT Digital Library

(open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 23, Ed. 1 Monday, September 12, 1977

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.

Date: September 12, 1977

Creator: Schott, Bobbie

Object Type: Newspaper

System: The Portal to Texas History

[4-H Clubs of Medina County Sponsored Corn Crib]

Slide of 4-H Clubs of Medina County sponsored a corn crib, which was used to dry and store corn. On the left is a crowd of people facing three people in the background. On the left is a girl sitting on a structure built with logs. This was taken at the Texas Folklife Festival.

Date: [1974-09-12..1974-09-15]

Creator: unknown

Object Type: Photograph

System: The Portal to Texas History

E-5 (9-12-19)

Photograph of Mangum Engine 5.

Date: September 12, 2019

Creator: unknown

Object Type: Photograph

System: The Gateway to Oklahoma History

(open access)

A 90-GHz Photoinjector

Photocathode rf guns depend on mode locked laser systems to produce an electron beam at a given phase of the rf. In general, the laser pulse is less than {sigma}{sub z} = 10{sup o} of rf phase in length and the required stability is on the order of {Delta}{phi} = 1{sup o}. At 90 GHz (W-band), these requirements correspond to {sigma}{sub z} = 333 fsec and {Delta}{phi} = 33 fsec. Laser system with pulse lengths in the fsec regime are commercially available, the timing stability is a major concern. We propose a multi-cell W-band photoinjector that does not require a mode locked laser system. Thereby eliminating the stability requirements at W-band. The laser pulse is allowed to be many rf periods long. In principle, the photoinjector can now be considered as a thermionic rf gun. Instead of using an alpha magnet to compress the electron bunch, which would have a detrimental effect on the transverse phase space quality due to longitudinal phase space mixing, we propose to use long pulse laser system and a pair of undulators to produce a low emittance, high current, ultra-short electron bunch for beam dynamics experiments in the 90 GHz regime.

Date: September 12, 2005

Creator: Palmer, D. T.; Hogan, M. J.; Ferrario, M. & Serafini, L.

Object Type: Article

System: The UNT Digital Library

(open access)

108th CONGRESS 1st Session H. R. 1588 An Act

Date: September 12, 2005

Creator: United States. Department of Defense.

Object Type: Text

System: The UNT Digital Library

(open access)

15th Street News (Midwest City, Okla.), Vol. 4, No. 1, Ed. 1 Thursday, September 12, 1974

Newspaper from Oscar Rose Junior College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: September 12, 1974

Creator: West, Terry Lynn

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

15th Street News (Midwest City, Okla.), Vol. 15, No. 3, Ed. 1 Friday, September 12, 1986

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: September 12, 1986

Creator: Intrieri, Danette

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

15th Street News (Midwest City, Okla.), Vol. 27, No. 2, Ed. 1 Friday, September 12, 1997

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: September 12, 1997

Creator: Easttom, Holly

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

15th Street News (Midwest City, Okla.), Vol. 33, No. 2, Ed. 1 Friday, September 12, 2003

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: September 12, 2003

Creator: Hadley, Meghann

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

15th Street News (Midwest City, Okla.), Vol. 38, No. 3, Ed. 1 Friday, September 12, 2008

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

Date: September 12, 2008

Creator: Price, Racheal

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

1990 Fischer Standard study

The purpose of this work is to develop a set of Titanium areal density standards for calibration and maintenance of the Fischer`s X-ray Fluorescence measurement system characterization curve program. The electron microprobe was calibrated for Titanium films on ceramic substrates using an existing set of laboratory standards (Quantity: 6 Range: 0.310 to 1.605). Fourteen source assemblies were measured and assigned values. These values are based on a mean calculation, of five separate readings, from best curve fit equations developed form the plot of the laboratory standards areal density (Source Measure) versus electron microprobe measurement (reading). The best fit equations were determined using the SAS General Linear Modeling (GLM) procedure. Four separate best fit equations were evaluated (Linear, Quadratic, Cubic and Exponential). Areal density values for the Fischer Standards appear here ordered by best fit equation based on maximum R{sup 2}.

Date: September 12, 1990

Creator: Roubik, G. J.

Object Type: Report

System: The UNT Digital Library

(open access)

2005 River Corridor Cleanup Contractor Revegetation Monitoring Report

This report contains a compilation of the results of vegetation monitoring data that were collected in the spring and summer of 2005 for the Environmental Restoration Contractor's revegetation and mitigation areas on the Hanford Site.

Date: September 12, 2005

Creator: Johnson, A. L.

Object Type: Report

System: The UNT Digital Library

2018 Texas Sentate Debate Twitter Dataset

This dataset contains Twitter JSON data for Tweets related to the United States Senate race between Beto O'Rourke and Ted Cruz. This dataset contains Tweets captured around their first debate on September 21, 2018. This dataset was created using the twarc (https://github.com/edsu/twarc) package that makes use of Twitter's search API. A total of 3,006,198 Tweets and 101,050 media files make up the combined dataset.

Date: 2018-09-12/2018-10-03

Creator: Phillips, Mark Edward

Object Type: Dataset

System: The UNT Digital Library

(open access)

630A Maritime Nuclear Steam Generator: Status Report Number 1

From foreword: The primary purpose of this document is to set forth the current status of the 630A Nuclear Steam Generator, under development for the U.S. AEC.

Date: September 12, 1963

Creator: General Electric Company. Nuclear Materials and Propulsion Operation.

Object Type: Report

System: The UNT Digital Library