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5000 groove/mm multilayer-coated blazed grating with 33percent efficiency in the 3rd order in the EUV wavelength range
We report on recent progress in developing diffraction gratings which can potentially provide extremely high spectral resolution of 105-106 in the EUV and soft x-ray photon energy ranges. Such a grating was fabricated by deposition of a multilayer on a substrate which consists ofa 6-degree blazed grating with a high groove density. The fabrication of the substrate gratings was based on scanning interference lithography and anisotropic wet etch of silicon single crystals. The optimized fabrication process provided precise control of the grating periodicity, and the grating groove profile, together with very short anti-blazed facets, and near atomically smooth surface blazed facets. The blazed grating coated with 20 Mo/Si bilayers demonstrated a diffraction efficiency in the third order as high as 33percent at an incidence angle of 11? and wavelength of 14.18 nm.
Date:
July 7, 2009
Creator:
Lawrence Berkeley National Laboratory. Advanced Light Source.
Object Type:
Article
System:
The UNT Digital Library
Agricultural Conservation Issues in the 111th Congress
This report focuses on the discussions in the 111th Congress on the 2008 farm bill. Moreover, the report details that debate has shifted to the off-farm impact the bill has. The report also discusses the budgetary issues surrounding the farm bill that the 111th Congress was presented with.
Date:
July 7, 2009
Creator:
Stubbs, Megan
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 111, No. 259, Ed. 1 Tuesday, July 7, 2009
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 7, 2009
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Banner for the 15th World Saxophone Congress]
Photograph of a banner for the 15th World Saxophone Congress held at Mahidol University in Thailand. Text on the sign reads, "World Saxophone Congress XV / www.wscxv.org // Growth and Convergence / July 7-12, 2009 Bangkok, Thailand."
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 89, No. 188, Ed. 1 Tuesday, July 7, 2009
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
July 7, 2009
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
Binary pseudo-random gratings and arrays for calibration of the modulation transfer function of surface profilometers: recent developments
The major problem of measurement of a power spectral density (PSD) distribution of the surface heights with surface profilometers arises due to the unknown Modulation Transfer Function (MTF) of the instruments. The MTF tends to distort the PSD at higher spatial frequencies. It has been suggested [Proc. SPIE 7077-7, (2007), Opt. Eng. 47 (7), 073602-1-5 (2008)] that the instrumental MTF of a surface profiler can be precisely measured using standard test surfaces based on binary pseudo-random (BPR) patterns. In the cited work, a one dimensional (1D) realization of the suggested method based on use of BPR gratings has been demonstrated. Here, we present recent achievements made in fabricating and using two-dimensional (2D) BPR arrays that allow for a direct 2D calibration of the instrumental MTF. The 2D BPRAs were used as standard test surfaces for 2D MTF calibration of the MicromapTM-570 interferometric microscope with all available objectives. The effects of fabrication imperfections on the efficiency of calibration are also discussed.
Date:
July 7, 2009
Creator:
Barber, Samuel K.; Soldate, Paul; Anderson, Erik H.; Cambie, Rossana; Marchesini, Stefano; McKinney, Wanye R. et al.
Object Type:
Article
System:
The UNT Digital Library
Biosafety Laboratories: BSL-4 Laboratories Improved Perimeter Security Despite Limited Action by CDC
A letter report issued by the Government Accountability Office with an abstract that begins "Biosafety laboratories are primarily regulated by either the Department of Health and Human Services (HHS) or the U.S. Department of Agriculture (USDA), depending on whether the substances they handle pose a threat to the health of humans or plants, animals, and related products, respectively. Currently, all operational biosafety level 4 (BSL-4) labs are overseen by HHS's Centers for Disease Control and Prevention (CDC). BSL-4 labs handle the world's most dangerous agents and toxins that cause incurable and deadly diseases. In September 2008, GAO reported that two of the five operational BSL-4 labs had less than a third of the key perimeter security controls GAO assessed and recommended that CDC implement specific perimeter controls for all BSL-4 labs. GAO was asked to (1) provide an update on what action, if any, CDC took to address the 2008 recommendation; (2) determine whether perimeter security controls at the two deficient BSL-4 labs had improved since the 2008 report; and (3) provide other observations about the BSL-4 labs it assessed. To meet these objectives, GAO reviewed CDC's statement to Congress as well as other agency and HHS documentation on actions …
Date:
July 7, 2009
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
[Bob Rogers playing piano in front of stage 1]
Photograph of Bob Rogers playing the piano during a rehearsal for the "Way North of Ordinary" musical production at the Denton Civic Center. A majority of those on stage are holding large green and white umbrellas and the stage has blue and black cloth draped along the back and front.
Date:
July 7, 2009
Creator:
Payne, Gary
Object Type:
Photograph
System:
The UNT Digital Library
[Bob Rogers playing piano in front of stage 2]
Photograph of Bob Rogers playing the piano during a rehearsal for the "Way North of Ordinary" community musical production at the Denton Civic Center. A majority of those on stage are holding large green and white umbrellas and the stage has blue and black cloth draped along the back and front.
Date:
July 7, 2009
Creator:
Payne, Gary
Object Type:
Photograph
System:
The UNT Digital Library
[Bob Rogers playing piano with people seated behind him]
Photograph of Bob Rogers playing the piano during a rehearsal for the "Way North of Ordinary" community musical production at the Denton Civic Center. Two women are seated in chairs beside him, both with papers in front of them. Further back there are people seated at long tables.
Date:
July 7, 2009
Creator:
Payne, Gary
Object Type:
Photograph
System:
The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 103, No. 54, Ed. 1 Tuesday, July 7, 2009
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
July 7, 2009
Creator:
Cartwright, Brian & Velvin, Candace E.
Object Type:
Newspaper
System:
The Portal to Texas History
[Brad Leali and Sean Giddings perform at the 15th World Saxophone Congress, 1]
Photograph of Brad Leali (alto saxophone) and Sean Giddings (piano) performing with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brad Leali and Sean Giddings perform at the 15th World Saxophone Congress, 2]
Photograph of Brad Leali (alto saxophone) and Sean Giddings (piano) performing with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brad Leali performs at the 15th World Saxophone Congress, 1]
Photograph of Brad Leali playing alto saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brad Leali performs at the 15th World Saxophone Congress, 2]
Photograph of Brad Leali playing alto saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brad Leali performs at the 15th World Saxophone Congress, 3]
Photograph of Brad Leali playing alto saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brad Leali performs at the 15th World Saxophone Congress, 4]
Photograph of Brad Leali playing alto saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brian Clancy and Chris Mike perform at the 15th World Saxophone Congress]
Photograph of Brian Clancy (left) and Chris Mike (right) playing saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brian Clancy performs at the 15th World Saxophone Congress, 1]
Photograph of Brian Clancy playing tenor saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brian Clancy performs at the 15th World Saxophone Congress, 2]
Photograph of Brian Clancy playing tenor saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Brian Clancy performs at the 15th World Saxophone Congress, 3]
Photograph of Brian Clancy playing tenor saxophone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Carl Lundgren and Jason Hausback perform at the 15th World Saxophone Congress]
Photograph of Carl Lundgren (left) and Jason Hausback (right) playing trombone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
[Carl Lundgren performs at the 15th World Saxophone Congress]
Photograph of Carl Lundgren playing trombone with the One O'Clock Lab Band at the 15th World Saxophone Congress held at Mahidol University in Thailand.
Date:
[2009-07-07..2009-07-12]
Creator:
Garcia, Michal
Object Type:
Photograph
System:
The UNT Digital Library
Cellulose Synthesizing Complexes in Vascular Plants and Procaryotes
Continuing the work initiated under DE-FG03-94ER20145, the following major accomplishments were achieved under DE-FG02-03ER15396 from 2003-2007: (a) we purified the acsD gene product of the Acetobacter cellulose synthase operon as well as transferred the CesA cellulose gene from Gossypium into E. coli in an attempt to crystallize this protein for x-ray diffraction structural analysis; however, crystallization attempts proved unsuccessful; (b) the Acetobacter cellulose synthase operon was successfully incorporated into Synechococcus, a cyanobacterium2; (c) this operon in Synechococcus was functionally expressed; (d) we successfully immunolabeled Vigna cellulose and callose synthase components and mapped their distribution before and after wounding; (e) we developed a novel method to produce replicas of cellulose synthases in tobacco BY-2 cells, and we demonstrated the cytoplasmic domain of the rosette TC; (f) from the moss Physcomitrella, we isolated two full-length cDNA sequences of cellulose synthase (PpCesA1 and PpCesA2) and attempted to obtain full genomic DNA sequences; (g) we examined the detailed molecular structure of a new form of non-crystalline cellulose known as nematic ordered cellulose (=NOC)3.
Date:
July 7, 2009
Creator:
Brown, Richard M., Jr. & Saxena, Inder Mohan
Object Type:
Report
System:
The UNT Digital Library