نتایج جستجو برای: spacing shifts
تعداد نتایج: 79035 فیلتر نتایج به سال:
The Neutron Larmor diffraction method is applied for the first time to determine absolute lattice spacing of a Silicon powder and polycrystalline IN718 samples. The absolute value of lattice spacing can be measured to an accuracy of 7· 10A. However, absolute determination of the lattice parameter is limited by the quality of the reference specimen used. Absolute lattice spacing determined by La...
Squares receive higher category ratings when the smaller sizes are presented more frequently than the larger sizes. This shift in the rating scale is greater when there are either fewer categories (the Category Effect) or more stimuli. Similar shifts were obtained whether the stimuli were presented successively for judgment or simultaneously. The Category Effect also occurred when subjects were...
Spacing subshifts are a class of subshifts of a full shift on two symbols, defined in a superficially similar fashion to S-gap shifts. They were introduced by Lau and Zame in 1973 to give accessible examples of maps that are weakly (topologically) mixing but not strongly mixing, but have attracted little attention since. This talk will discuss the variety of topological dynamical behaviours the...
Polaron-to-polaron transitions in the radio-frequency spectrum of a quasi-two-dimensional Fermi gas.
We measure radio-frequency spectra for a two-component mixture of a 6Li atomic Fermi gas in a quasi-two-dimensional regime with the Fermi energy comparable to the energy level spacing in the tightly confining potential. Near the Feshbach resonance, we find that the observed resonances do not correspond to transitions between confinement-induced dimers. The spectral shifts can be fit by assuming...
Space travel induces many deleterious effects on the flight crew due to the '0' g environment. The brain experiences a tremendous fluid shift, which is responsible for many of the detrimental changes in physical behavior seen in astronauts. It therefore indicates that the brain may undergo major changes in its protein levels in a '0' g environment to counteract the stress. Analysis of these glo...
X-ray imaging crystal spectrometers with high spectral and spatial resolution are currently being used on magnetically confined fusion schemes to infer the time history of profiles of the ion and electron temperatures as well as plasma flow velocities. Recent studies indicate that the crystal temperature must be kept constant within a fraction of a degree to avoid changes of the interplanar 2d-...
The extent of chromatin compaction is a fundamental driver of nuclear metabolism . Yta7 is a chromatin-associated AAA-ATPase, the human ortholog of which, ANCCA/ATAD2 transcriptionally activates pathways of malignancy in a broad range of cancers. Yta7 directly binds histone H3, and bulk chromatin exhibits increased nucleosomal density in yta7Δ mutants. The suppression of yta7Δ mutant growth and...
Digital tomosynthesis (DTS) was evaluated as an alternative to cone-beam computed tomography (CBCT) for patient setup. DTS is preferable when there are constraints with setup time, gantry-couch clearance, and imaging dose using CBCT. This study characterizes DTS data acquisition and registration parameters for the setup of breast cancer patients using nonclinical Varian DTS software. DTS images...
A 46 year old man was transfused ten units of packed red blood cells during subtotal colectomy after intraoperative point-of-care testing values demonstrated hemoglobin values less than seven grams per deciliter (g/dL). A postoperative hemoglobin analyzed in a standard hematologic laboratory revealed a hemoglobin value of 27.8 g/dL. He underwent emergent red blood cell depletion therapy which d...
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