14,007 research outputs found
Nutrition, Diabetes and Misconceptions
One of the most effective ways to assist patients with diabetes is to empower them to manage their diabetes through lifestyle change. However, figuring out what to eat when you have diabetes can be very confusing. This project attempted to provide simple lifestyle changes patients could make.https://scholarworks.uvm.edu/fmclerk/1328/thumbnail.jp
Cascade atom in high-Q cavity: The spectrum for non-Markovian decay
The spontaneous emission spectrum for a three level cascade configuration
atom in a single mode high-Q cavity coupled to a zero temperature reservoir of
continuum external modes is determined from the atom-cavity mode master
equation using the quantum regression theorem. Initially the atom is in its
upper state and the cavity mode empty of photons. Following Glauber, the
spectrum is defined via the response of a detector atom. Spectra are calculated
for the detector located inside the cavity (case A), outside the cavity end
mirror (Case B-end emission), or placed for emission out the side of the cavity
(Case C). The spectra for case A and case B are found to be essentially the
same. In all the cases the predicted lineshapes are free of instrumental
effects and only due to cavity decay. Spectra are presented for intermediate
and strong coupling regime situations (where both atomic transitions are
resonant with the cavity frequency), for cases of non-zero cavity detuning, and
for cases where the two atomic transition frequencies differ. The spectral
features for Cases B(A) and C are qualitatively similar, with six spectral
peaks for resonance cases and eight for detuned cases. These general features
of the spectra can be understood via the dressed atom model. However, Case B
and C spectra differ in detail, with the latter exhibiting a deep spectral hole
at the cavity frequency due to quantum interference effects.Comment: 29 pages, 14 figures; v2: very minor correction to two equations,
thicker lines in some figure
Advanced technologies for Mission Control Centers
Advance technologies for Mission Control Centers are presented in the form of the viewgraphs. The following subject areas are covered: technology needs; current technology efforts at GSFC (human-machine interface development, object oriented software development, expert systems, knowledge-based software engineering environments, and high performance VLSI telemetry systems); and test beds
HESS J1641-463, a very hard spectrum TeV gamma-ray source in the Galactic plane
HESS J1641-463 is a unique source discovered by the High Energy Stereoscopic
System (H.E.S.S.) telescope array in the multi-TeV domain. The source had been
previously hidden in the extended tail of emission from the bright nearby
source HESS J1640-465. However, the analysis of the very-high-energy (VHE) data
from the region at energies above 4 TeV revealed this new source at a
significance level of 8.5. HESS J1641-463 showed a moderate flux level
F(E > 1 TeV) = (3.64 +/- 0.44_stat +/- 0.73_sys) 10^-13 cm^-2s^-1,
corresponding to 1.8% of the Crab Nebula flux above the same energy, and a hard
spectrum with a photon index Gamma = 2.07 +/- 0.1_stat +/- 0.20_sys. The light
curve was investigated for evidence of variability, but none was found on both
short (28-min observation) and long (yearly) timescales. HESS J1641-463 is
positionally coincident with the radio supernova remnant (SNR) G338.5+0.1.
There is no clear X-ray counterpart of the SNR, although Chandra and XMM-Newton
data reveal some weak emission that may be associated. If the emission from
HESS J1641-463 is produced by cosmic ray protons colliding with the ambient
gas, then the proton spectrum extends up to 0.1 PeV (99% confidence level) and
likely to higher energies, > 0.27 PeV (90% confidence level). If this is the
case, then HESS J1641-463 may be a member of a larger source population
contributing to the Galactic cosmic-ray flux around the knee.Comment: In Proceedings of the 34th International Cosmic Ray Conference
(ICRC2015), The Hague, The Netherland
Grassmann phase space theory for fermions
A phase space theory for fermions has been developed using Grassmann phase space variables which can be used in numerical calculations for cold Fermi gases and for large fermion numbers. Numerical calculations are feasible because Grassmann stochastic variables at later times are related linearly to such variables at earlier times via c-number stochastic quantities. A Grassmann field version has been developed making large fermion number applications possible. Applications are shown for few mode and field theory cases
Exploration of the Neuronal Subtype Specificity of an Ethanol Responsive Gene: Glycogen Synthase Kinase 3 Beta (Gsk3b)
Exploration of the Neuronal Subtype Specificity of an Ethanol Responsive Gene: Glycogen Synthase Kinase 3 Beta (Gsk3b)
Dalton Huey, Depts. of Bioinformatics, Biology & Chemistry, A. van der Vaart, G. M. Harris, and M. F. Miles, with Dr. Sarah Golding, Dept. of Biology
Previous work done in our laboratory revealed that Glycogen Synthase Kinase 3 Beta (Gsk3b) functions as a hub gene in a network of genes regulated by acute ethanol in the medial prefrontal cortex (mPFC) across a mouse genetic panel. Adult mice treated with acute ethanol showed increased phosphorylation of GSK3B on the Ser9 residue in prefrontal cortex. Subsequent viral-mediated overexpression of Gsk3bin mouse mPFC caused an increase in ethanol consumption and pharmacological inhibition of GSK3B decreased ethanol consumption. However, it is unknown what neuron subtypes are driving this change in behavior. Here, we provide evidence that deletion of Gsk3bin Camk2a+ glutamatergic neurons of the mPFC results in a decrease in ethanol consumption in both continuous and intermittent access drinking paradigms. Furthermore, we have recently designed and validated a plasmid for Cre-dependent overexpression of Gsk3b, along with a Cre-dependent reporter as a control. These plasmids are planned for use in conjunction with different Cre drivers for viral-mediated expression in any cell type. Dissection of the neural circuitry of this ethanol responsive pathway can lead to a better assessment of Gsk3bas a potential target for the treatment of alcohol use disorders. Work supported by grants R01A027581 and P50AA022537 to MFM.https://scholarscompass.vcu.edu/uresposters/1313/thumbnail.jp
Universal Design for Learning: Guiding Principles to Reduce Barriers to Digital & Media Literacy Competence
Universal Design for Learning (UDL), a framework for designing instruction to address the wide range of learner variation in today’s inclusive classrooms, can be applied effectively to broaden access, understanding, and engagement in digital and media literacy learning for ALL. UDL supports constructivist learning principles. UDL strategiesand methods encouragedevelopment of expert learners though personal engagement and motivation. UDL transforms one-size-fits-all instruction into diverse, multiple, and accessible learning opportunities that embrace student variation. UDL principles and guidelines offer a unique way for educators in digital and media literacy fields to ensure that their work will benefit the widest range of learners, including those with learning challenges and disabilities
Implied Private Right of Action Recognized Under the Investment Advisers Act (Abrahamson v. Fleschner)
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