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6,207 Matching Results

Start Over Month November Day 17th Language English

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(open access)

Ion Deflection for Final Optics In Laser Inertial Fusion Power Plants

Left unprotected, both transmissive and reflective final optics in a laser inertial fusion power plant would quickly fail from melting, pulsed thermal stresses, or degradation of optical properties as a result of ion implantation. One potential option for mitigating this threat is to magnetically deflect the ions such that they are directed into a robust energy dump. In this paper we detail integrated studies that have been carried out to asses the viability of this approach for protecting final optics.

Date: November 17, 2006

Creator: Abbott, R P & Latkowski, J F

Object Type: Article

System: The UNT Digital Library

(open access)

The On-Orbit Calibrations for the Fermi Large Area Telescope

The Large Area Telescope (LAT) on-board the Fermi Gamma-ray Space Telescope began its on-orbit operations on June 23, 2008. Calibrations, defined in a generic sense, correspond to synchronization of trigger signals, optimization of delays for latching data, determination of detector thresholds, gains and responses, evaluation of the perimeter of the South Atlantic Anomaly (SAA), measurements of live time, of absolute time, and internal and spacecraft boresight alignments. Here we describe on-orbit calibration results obtained using known astrophysical sources, galactic cosmic rays, and charge injection into the front-end electronics of each detector. Instrument response functions will be described in a separate publication. This paper demonstrates the stability of calibrations and describes minor changes observed since launch. These results have been used to calibrate the LAT datasets to be publicly released in August 2009.

Date: November 17, 2011

Creator: Abdo, Aous A.; /Naval Research Lab, Wash., D.C.; Ackermann, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Ajello, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

Pulsed Gamma-Rays From the Millisecond Pulsar J0030+0451 with the Fermi Large Area Telescope

We report the discovery of gamma-ray pulsations from the nearby isolated millisecond pulsar PSR J0030+0451 with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (formerly GLAST). This discovery makes PSR J0030+0451 the second millisecond pulsar to be detected in gamma-rays after PSR J0218+4232, observed by the EGRET instrument on the Compton Gamma Ray Observatory. The spin-down power {dot E} = 3.5 x 10{sup 33} ergs s{sup -1} is an order of magnitude lower than the empirical lower bound of previously known gamma-ray pulsars. The emission profile is characterized by two narrow peaks, respectively 0.07 {+-} 0.01 and 0.08 {+-} 0.02 wide, separated by 0.44 {+-} 0.02 in phase. The first gamma-ray peak falls 0.15 {+-} 0.01 after the main radio peak. The pulse shape is similar to that of the 'normal' gamma-ray pulsars. An exponentially cut-off power-law fit of the emission spectrum leads to an integral photon flux above 100 MeV of (6.76 {+-} 1.05 {+-} 1.35) x 10{sup -8} cm{sup -2} s{sup -1} with cut-off energy (1.7 {+-} 0.4 {+-} 0.5) GeV. Based on its parallax distance of (300 {+-} 90) pc, we obtain a gamma-ray efficiency L{sub {gamma}}/{dot E} {approx_equal} 15% for the conversion of …

Date: November 17, 2011

Creator: Abdo, Aous A.; /Naval Research Lab, Wash., D.C.; Ackermann, M.; /Stanford U., HEPL /KIPAC, Menlo Park /Stanford U., Phys. Dept.; Atwood, W.B.; /UC, Santa Cruz et al.

Object Type: Article

System: The UNT Digital Library

(open access)

[Letter from Julie Anne Abel to D. Jack Davis, November 17, 1998]

A letter from Julie Anne to D. Jack Davis about conforming the use of the Getty Education Institute for the Arts' National Specialty Program funds for the North Texas Institute for Educators on the Visual Arts.

Date: November 17, 1998

Creator: Abel, Julie Anne

Object Type: Letter

System: The UNT Digital Library

(open access)

Indian Chieftain. (Vinita, Indian Terr.), Vol. 6, No. 10, Ed. 1, Thursday, November 17, 1887

Weekly newspaper from Vinita, Indian Territory. Coverage includes local, territory, and United States news, along with advertising.

Date: November 17, 1887

Creator: Adair, John L.

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 72, No. 225, Ed. 1 Tuesday, November 17, 1981

Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1981

Creator: Adams, Bill

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Pawhuska Daily Journal-Capital (Pawhuska, Okla.), Vol. 73, No. 228, Ed. 1 Wednesday, November 17, 1982

Daily newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1982

Creator: Adams, Bill

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

The Harper County Democrat (Buffalo, Okla.), Vol. 10, No. 33, Ed. 1 Friday, November 17, 1916

Weekly newspaper from Buffalo, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1916

Creator: Adams, E. Lee

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

The Democrat News (Sapulpa, Okla.), Vol. 40, No. 2, Ed. 1 Thursday, November 17, 1949

Weekly newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1949

Creator: Adams, Ellis

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

The Forgan Advocate (Forgan, Okla.), Vol. 6, No. 5, Ed. 1 Thursday, November 17, 1932

Weekly newspaper from Forgan, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1932

Creator: Adams, Marie

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Railway-Crossing.

Patent for a railway crossing track, which does not jar the train's wheels as it passes over the crossing.

Date: November 17, 1908

Creator: Adams, Powell O.

Object Type: Patent

System: The Portal to Texas History

(open access)

The Edmond Enterprise (Edmond, Okla.), Vol. 2, No. 41, Ed. 1 Thursday, November 17, 1927

Weekly newspaper from Edmond, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1927

Creator: Adamson, Royce B.

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

The Edmond Enterprise (Edmond, Okla.), Vol. 21, No. 42, Ed. 1 Thursday, November 17, 1921

Weekly newspaper from Edmond, Oklahoma that includes local, state, and national news along with advertising.

Date: November 17, 1921

Creator: Adamson, Royce B.

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Indicator For Clocks or Watches

Patent for an improvement to clocks or watches that will display an indicator when the timepiece needs to be re-wound.

Date: November 17, 1908

Creator: Aeschlimann, Adolph E.

Object Type: Patent

System: The Portal to Texas History

(open access)

Wrench.

Patent for a wrench, which can used "as a nut wrench or a pipe wrench" (lines 18-19).

Date: November 17, 1908

Creator: Aeschlimann, Adolph E.

Object Type: Patent

System: The Portal to Texas History

(open access)

Combined Cotton Chopper and Cultivator.

Patent for a combined cotton chopper and cultivator, which allows cotton to be chopped earlier and to be done by one person.

Date: November 17, 1908

Creator: Agee, Jonathan F.

Object Type: Patent

System: The Portal to Texas History

(open access)

High-purity, isotopically enriched bulk silicon

The synthesis and characterization of dislocation-free, undoped, single crystals of Si enriched in all 3 stable isotopes is reported: {sup 28}Si (99.92%), {sup 29}Si (91.37%), and {sup 30}Si (89.8%). A silane-based process compatible with the relatively small amounts of isotopically enriched precursors that are practically available was used. The silane is decomposed to silicon on a graphite starter rod heated to 700-750 C in a recirculating flow reactor. A typical run produces 35 gm of polycrystalline Si at a growth rates of 5 {micro}m/min and conversion efficiency >95%. Single crystals are grown by the floating zone method and characterized by electrical and optical measurements. Concentrations of shallow dopants (P and B) are as low as mid-10{sup 13} cm{sup -3}. Concentrations of C and O lie below 10{sup 16} and 10{sup 15} cm{sup -3}, respectively.

Date: November 17, 2004

Creator: Ager, J. W., III; Beeman, J. W.; Hansen, W. L.; Haller, E. E.; Sharp, I. D.; Liao, C. et al.

Object Type: Article

System: The UNT Digital Library

(open access)

The Odem-Edroy Times (Odem, Tex.), Vol. 39, No. 46, Ed. 1 Thursday, November 17, 1988

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

Date: November 17, 1988

Creator: Aguilar, Rebecca & Hall, Page

Object Type: Newspaper

System: The Portal to Texas History

Fostering Student Employee Engagement: Creating a Sense of Ownership Through Task Sharing Initiatives

Presentation describing how student supervisors developed a task sharing and reporting mechanism to encourage teamwork and improve student engagement. Student supervisors of the Access Services Department are committed to creating a positive and effective work environment while ensuring accountability and productivity. In order to improve students' work experience, the supervisors developed tools and techniques which have increased student engagement in the department operations and empowered them to take initiatives. In addition, these tools have boosted student assistant productivity, provided a sense of ownership and accomplishment, and improved communication with supervisors.

Date: November 17, 2021

Creator: Akers, Emily; Baskett, Pilar; Knox, Briana & Keshmiripour, Setareh

Object Type: Presentation

System: The UNT Digital Library