6,173 research outputs found
Radon gas, useful for medical purposes, safely fixed in quartz
Radon gas is enclosed in quartz or glass ampules by subjecting the gas sealed at a low pressure in the ampules to an ionization process. This process is useful for preparing fixed radon sources for radiological treatment of malignancies, without the danger of releasing radioactive gases
The utility of PSMA and PSA immunohistochemistry in the cytologic diagnosis of metastatic prostate carcinoma
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/107502/1/dc23075.pd
Structurally specific thermal fluctuations identify functional sites for DNA transcription
We report results showing that thermally-induced openings of double stranded
DNA coincide with the location of functionally relevant sites for
transcription. Investigating both viral and bacterial DNA gene promoter
segments, we found that the most probable opening occurs at the transcription
start site. Minor openings appear to be related to other regulatory sites. Our
results suggest that coherent thermal fluctuations play an important role in
the initiation of transcription. Essential elements of the dynamics, in
addition to sequence specificity, are nonlinearity and entropy, provided by
local base-pair constraints
Sensitivity potential to a light flavor-changing scalar boson with DUNE and NA64
In this work, we report on the sensitivity potential of complementary
muon-on-target experiments to new physics using a scalar boson benchmark model
associated with charged lepton flavor violation. The NA64 experiment at
CERN uses a 160-GeV energy muon beam with an active target to search for excess
events with missing energy and momentum as a probe of new physics. At the same
time, the proton beam at Fermilab, which is used to produce the neutrino beam
for the Deep Underground Neutrino Experiment (DUNE) will also produce a
high-intensity muon beam dumped in an absorber. Combined with the liquid Argon
Near Detector, the system could be used to search for similar scalar boson
particles with a lower energy but higher intensity beam. We find that both
NA64 and DUNE could cover new, unexplored parts of the parameter space of
the same benchmark model, providing a complementary way to search for new
physics
Recent atmospheric neutrino results from Soudan 2
An updated measurement of the atmospheric nu_mu/nu_e ratio-of-ratios,
0.68+-0.11+-0.06, has been obtained using a 4.6-kty exposure of the Soudan-2
iron tracking calorimeter. The L/E distributions have been analyzed for effects
of nu_mu -> nu_x oscillations, and an allowed region in the Delta m^2 vs. sin^2
2 theta plane has been determined.Comment: 3 pages, 4 figures; presented at TAUP99, the 6th Int. Workshop on
Topics in Astroparticle and Underground Physics, Sept. 6-10, 1999, College de
France, Paris, Franc
Instrument manual for the retarding ion mass spectrometer on Dynamics Explorer-1
The retarding ion mass spectrometer (RIMS) for Dynamics Explorer-1 is an instrument designed to measure the details of the thermal plasma distribution. It combines the ion temperature determining capability of the retarding potential analyzer with the compositional capabilities of the mass spectrometer and adds multiple sensor heads to sample all directions relative to the spacecraft ram direction. This manual provides a functional description of the RIMS, the instrument calibration, and a description of the commands which can be stored in the instrument logic to control its operation
Construction of the Soudan 2 detector
Progress in the construction of the Soudan 2 nucleon decay detector which is being built at the Soudan iron mine in Minnesota is discussed. The expected event rate and characteristics of low energy neutrino events, muon events, multiple muon events, and other cosmic ray phenomena are discussed
Loading tests of a wing structure for a hypersonic aircraft
Room-temperature loading tests were conducted on a wing structure designed with a beaded panel concept for a Mach 8 hypersonic research airplane. Strain, stress, and deflection data were compared with the results of three finite-element structural analysis computer programs and with design data. The test program data were used to evaluate the structural concept and the methods of analysis used in the design. A force stiffness technique was utilized in conjunction with load conditions which produced various combinations of panel shear and compression loading to determine the failure envelope of the buckling critical beaded panels The force-stiffness data did not result in any predictions of buckling failure. It was, therefore, concluded that the panels were conservatively designed as a result of design constraints and assumptions of panel eccentricities. The analysis programs calculated strains and stresses competently. Comparisons between calculated and measured structural deflections showed good agreement. The test program offered a positive demonstration of the beaded panel concept subjected to room-temperature load conditions
Book Reviews
Julie Nichols - Reading Ethically
Peter Fields - Gregory Marshall. Shaped by Stories: The Ethical Power of Narratives. Notre Dame, IN: U of Notre Dame P., 2009
Walter L. Reed - Gregory, Marshall. Teaching Excellence in Higher Education, ed. Melissa Valiska Gregory. NY: Palgrave Macmillan, 2013
Jeffrey H. Taylor - Musgrove, Laurence. Local Bird. Beaumont, TX: Lamar U Press, 2015
Warren Hatch - Lynch, Tom, Cheryll Glotfelty, Karla Armbruster. The Bioregional Imagination—Literature, Ecology, and Place. Athens, GA: U of GA Press, 201
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