The in-orbit performance and calibration of the Hard X-ray Detector (HXD) on board the X-ray astronomy satellite Suzaku are described. Its basic performances, including a wide energy bandpass of 10-600 keV, energy resolutions of {approx}4 keV (FWHM) at 40 keV and {approx}11% at 511 keV, and a high background rejection efficiency, have been confirmed by extensive in-orbit calibrations. The long-term gains of PIN-Si diodes have been stable within 1% for half a year, and those of scintillators have decreased by 5-20%. The residual non-X-ray background of the HXD is the lowest among past non-imaging hard X-ray instruments in energy ranges of 15-70 and 150-500 keV. We provide accurate calibrations of energy responses, angular responses, timing accuracy of the HXD, and relative normalizations to the X-ray CCD cameras using multiple observations of the Crab Nebula.

We report on a search for the lepton-flavor-violating processes e{sup +}e{sup -} {yields} {mu}{sup +}{tau}{sup -} and e{sup +}e{sup -} {yields} e{sup +}{tau}{sup -}. The data sample corresponds to an integrated luminosity of 211 fb{sup -1} recorded by the BABAR experiment at the SLAC PEP-II asymmetric-energy B Factory at a center-of-mass energy of {radical}s = 10:58 GeV. We find no evidence for a signal and set the 95% confidence level upper limits on the cross sections to be {sigma}{sub {mu}{tau}} < 4:6 fb and {sigma}{sub e{tau}} < 10:1 fb. The ratios of the cross sections with respect to the dimuon cross section are measured to be {sigma}{sub {mu}{tau}} ={sigma}{sub {mu}{mu}} < 4:0x10{sup -6} and {sigma}{sub e{tau}}/{sigma}{sub {mu}{mu}} < 8.9 x 10{sup -6}.

We reported previously that the homologous recombinational repair (HRR)-deficient Chinese hamster mutant cell line irs3 (deficient in the Rad51 paralog Rad51C) showed only a 50% spontaneous frequency of sister chromatid exchange (SCE) as compared to parental wild-type V79 cells. Furthermore, when irradiated with very low doses of alpha particles, SCEs were not induced in irs3 cells, as compared to a prominent bystander effect observed in V79 cells (Nagasawa et al., Radiat. Res. 164, 141-147, 2005). In the present study, we examined additional Chinese hamster cell lines deficient in the Rad51 paralogs Rad51C, Rad51D, Xrcc2, and Xrcc3 as well as another essential HRR protein, Brca2. Spontaneous SCE frequencies in non-irradiated wild-type cell lines CHO, AA8 and V79 were 0.33 SCE/chromosome, whereas two Rad51C-deficient cell lines showed only 0.16 SCE/chromosome. Spontaneous SCE frequencies in cell lines defective in Rad51D, Xrcc2, Xrcc3, and Brca2 ranged from 0.23-0.33 SCE/chromosome, 0-30% lower than wild-type cells. SCEs were induced significantly 20-50% above spontaneous levels in wild-type cells exposed to a mean dose of 1.3 mGy of alpha particles (<1% of nuclei traversed by an alpha particle). However, induction of SCEs above spontaneous levels was minimal or absent after {alpha}-particle irradiation in all of the HRR-deficient cell …

Recital presented at the UNT College of Music Concert Hall in partial fulfillment of the Master of Music (MM) degree.

A wide spectrum of laboratory owners, ranging from universities to federal agencies, have explicit goals for energy efficiency in their facilities. For example, the Energy Policy Act of 2005 (EPACT 2005) requires all new federal buildings to exceed ASHRAE 90.1-2004 1 by at least 30 percent. The University of California Regents Policy requires all new construction to exceed California Title 24 2 by at least 20 percent. A new laboratory is much more likely to meet energy efficiency goals if quantitative metrics and targets are explicitly specified in programming documents and tracked during the course of the delivery process. If efficiency targets are not explicitly and properly defined, any additional capital costs or design time associated with attaining higher efficiencies can be difficult to justify. The purpose of this guide is to provide guidance on how to specify and compute energy efficiency metrics and benchmarks for laboratories, at the whole building as well as the system level. The information in this guide can be used to incorporate quantitative metrics and targets into the programming of new laboratory facilities. Many of these metrics can also be applied to evaluate existing facilities. For information on strategies and technologies to achieve energy efficiency, …

Correspondence issued by the Government Accountability Office with an abstract that begins "As a result of the 2005 base realignment and closure (BRAC) round, the military services are required to transfer to the Defense Logistics Agency (DLA) all of their supply, storage, and distribution functions at specified depot maintenance locations that are collocated with a DLA distribution depot. These transfer actions are part of a larger BRAC recommendation, commonly referred to as the Supply, Storage, and Distribution (SS&D) recommendation, that is intended to reduce both the number of supply distribution depots and related excess capacity, while providing the Department of Defense (DOD) with a logistics base that saves money and enhances the effectiveness of logistics support to operational forces. There has been disagreement among the services and DLA about whether certain personnel positions that include functions inherently involving both supply and maintenance operations at the services' industrial depots should transfer to DLA as part of this recommendation. The Air Force, Navy, and Marine Corps reached agreement with DLA about these positions in January, February, and April 2007, respectively. After repeated opposition to the transfer of certain positions, in July 2007 the Army agreed to comply with direction from the Office …

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.

Photograph of a park ranger and another person standing at the edge of an excavated hole in the Greenbelt Corridor near Denton. They are there leading a group of UNT students collecting samples.

Photograph of a Park Ranger and professor carrying a bin full of samples that were gathered in the Greenbelt Corridor. They are leading a group of students from UNT's College of Engineering on a biological and environmental engineering research trip. A fence is visible to the right of the trail.

Photograph of a UNT professor and a Texas Park Ranger standing in a clearing in the Greenbelt Corridor. They were leading a group of UNT students in the College of Engineering who were studying environmental and biological engineering. There are small plants growing in the clearing and markers in the distance.

Photograph of a park ranger and a professor standing at the edge of an excavated hole in the Greenbelt Corridor near Denton. They are there leading a group of UNT students collecting samples.

Photograph of a park ranger and a professor standing at the edge of an excavated hole in the Greenbelt Corridor near Denton. They are there leading a group of UNT students collecting samples.

Photograph of a Park Ranger and a UNT professor standing in the woods of the Greenbelt Corridor with a creek running behind them. They were leading a group of students from UNT's College of Engineering on a biological and environmental engineering research trip.

Photograph of a UNT professor and a Texas Park Ranger standing on the banks of a small offshoot of the Elm Fork of the Trinity River. They were leading a group of UNT students in the College of Engineering who were studying environmental and biological engineering. There is clear water and also water with green plant materials floating in it.

Photograph of a park ranger standing at what appears to be a fenced-in signal station in the Greenbelt Corridor near Denton. They are there leading a group of UNT students collecting samples. There is a metal cart in the area as well.

Photograph of a Park Ranger holding the pieces of a dirt clump that was gathered in the Greenbelt Corridor. He was leading a group of students from UNT's College of Engineering on a biological and environmental engineering research trip.

Photograph of a Park Ranger eating pecans that were gathered in the Greenbelt Corridor. He was leading a group of students from UNT's College of Engineering on a biological and environmental engineering research trip.

Photograph of a Park Ranger holding a dirt clump that was gathered in the Greenbelt Corridor. He was leading a group of students from UNT's College of Engineering on a biological and environmental engineering research trip.

Photograph of a Park Ranger holding out their hand, which is holding a few pecans. There are trees, brush, and vegetation behind him. He led a group of students from UNT's College of Engineering on a biological and environmental engineering research trip.

Photograph of a Park Ranger holding out their hand, which is holding a few pecans. There are trees, brush, and vegetation behind him. He led a group of students from UNT's College of Engineering on a biological and environmental engineering research trip.

Photograph of a UNT professor and a Texas Park Ranger standing in a clearing in the Greenbelt Corridor. They were leading a group of UNT students in the College of Engineering who were studying environmental and biological engineering. There are small plants growing in the clearing and the ranger is pointing to the right.

This alignment technique was developed while performing heterodyne velocimetry measurements at LLNL. There are a few minor items needed, such as a white card with aperture in center, visible alignment laser, IR back reflection meter, and a microscope to view the bridge surface. The work was performed on KCP flyers that were 6 and 8 mils wide. The probes used were Oz Optics manufactured with focal distances of 42mm and 26mm. Both probes provide a spot size of approximately 80?m at 1550nm. The 42mm probes were specified to provide an internal back reflection of -35 to -40dB, and the probe back reflections were measured to be -37dB and -33dB. The 26mm probes were specified as -30dB and both measured -30.5dB. The probe is initially aligned normal to the flyer/bridge surface. This provides a very high return signal, up to -2dB, due to the bridge reflectivity. A white card with a hole in the center as an aperture can be used to check the reflected beam position relative to the probe and launch beam, and the alignment laser spot centered on the bridge, see Figure 1 and Figure 2. The IR back reflection meter is used to measure the dB return …

Photograph of cheerleaders and the students following behind them in the 2007 UNT bonfire parade. They are passing in front of Clark Hall and there are also students standing in front of the dormitory.

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