12,447 research outputs found
The effect of tetrathionate on the stability and immunological properties of muscle triosephosphate dehydrogenases
Tetrathionate effect on stability and immunological properties of muscle triosephosphate dehydrogenase
Structural and Functional Properties of the H and M Subunits of Lactic Dehydrogenases
Structural and functional properties of H and M protein subunits of lactic dehydrogenase
<a comparative study of the evolution of enzymes and nucleic acids< semi-annual status report, nov. 1, 1964 - apr. 30, 1965
Lactic dehydrogenases and protein immunochemicals in vertebrate evolution - irradiation of nucleic acid
A comparative study of the evolution of enzymes and nucleic acids Semiannual progress report, 1 May - 30 Nov. 1967
Immunological and enzymological approaches to evolution of enzymes and nucleic acid
Evolution of Dehydrogenases
Evolution of dehydrogenases and comparative enzymological studie
Little Higgs Model Completed with a Chiral Fermionic Sector
The implementation of the little Higgs mechanism to solve the hierarchy
problem provides an interesting guiding principle to build particle physics
models beyond the electroweak scale. Most model building works, however, pay
not much attention to the fermionic sector. Through a case example, we
illustrate how a complete and consistent fermionic sector of the TeV effective
field theory may actually be largely dictated by the gauge structure of the
model. The completed fermionic sector has specific flavor physics structure,
and many phenomenological constraints on the model can thus be obtained beyond
gauge, Higgs, and top physics. We take a first look on some of the quark sector
constraints.Comment: 14 revtex pages with no figure, largely a re-written version of
hep-ph/0307250 with elaboration on flavor sector FCNC constraints; accepted
for publication in Phys.Rev.
Diffusive Radiation in One-dimensional Langmuir Turbulence
We calculate spectra of radiation produced by a relativistic particle in the
presence of one-dimensional Langmuir turbulence which might be generated by a
streaming instability in the plasma, in particular, in the shock front or at
the shock-shock interactions. The shape of the radiation spectra is shown to
depend sensitively on the angle between the particle velocity and electric
field direction. The radiation spectrum in the case of exactly transverse
particle motion is degenerate and similar to that of spatially uniform Langmuir
oscillations. In case of oblique propagation, the spectrum is more complex, it
consists of a number of power-law regions and may contain a distinct
high-frequency spectral peak. %at \omega=2\omega\pe \gamma^2. The emission
process considered is relevant to various laboratory plasma settings and for
astrophysical objects as gamma-ray bursts and collimated jets.Comment: 4 pages, 1 figure, accepted for Phys. Rev.
Pseudorandomness for Regular Branching Programs via Fourier Analysis
We present an explicit pseudorandom generator for oblivious, read-once,
permutation branching programs of constant width that can read their input bits
in any order. The seed length is , where is the length of the
branching program. The previous best seed length known for this model was
, which follows as a special case of a generator due to
Impagliazzo, Meka, and Zuckerman (FOCS 2012) (which gives a seed length of
for arbitrary branching programs of size ). Our techniques
also give seed length for general oblivious, read-once branching
programs of width , which is incomparable to the results of
Impagliazzo et al.Our pseudorandom generator is similar to the one used by
Gopalan et al. (FOCS 2012) for read-once CNFs, but the analysis is quite
different; ours is based on Fourier analysis of branching programs. In
particular, we show that an oblivious, read-once, regular branching program of
width has Fourier mass at most at level , independent of the
length of the program.Comment: RANDOM 201
Application of Photovoice with Focus Groups to Explore Dietary Behaviors of Older Filipino Adults with Cardiovascular Disease
Filipino Americans have high rates of cardiovascular diseases (CVD). This study explored the dietary behaviors, a modifiable risk factor, of Filipinos with CVD. Filipinos with CVD were recruited and trained to do Photovoice. Participants took photos to depict their “food experience,” defined as their daily dietary activities. Participants then shared their photos during focus groups. Focus group transcripts were analyzed using an iterative, grounded theory approach. Among 38 Filipino participants, the mean age was 70 years old and all were foreign-born. Major themes included efforts to retain connection to Filipino culture through food, and dietary habits shaped by cultural health beliefs. Many believed that traditional dietary practices increased CVD risk. Receiving a CVD diagnosis and clinician advice changed their dietary behaviors. Household members, the physical environment, and economic constraints also influenced dietary behaviors. Photovoice is feasible among older Filipinos and may enhance understanding of drivers of dietary behaviors
Semiclassical spatial correlations in chaotic wave functions
We study the spatial autocorrelation of energy eigenfunctions corresponding to classically chaotic systems in the semiclassical regime.
Our analysis is based on the Weyl-Wigner formalism for the spectral average
of , defined as the average over eigenstates within an energy window
centered at . In this framework is the Fourier
transform in momentum space of the spectral Wigner function . Our study reveals the chord structure that
inherits from the spectral Wigner function showing the interplay between the
size of the spectral average window, and the spatial separation scale. We
discuss under which conditions is it possible to define a local system
independent regime for . In doing so, we derive an expression
that bridges the existing formulae in the literature and find expressions for
valid for any separation size .Comment: 24 pages, 3 figures, submitted to PR
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