3,236 research outputs found
Non-zero density-velocity consistency relations for large scale structures
We present exact kinematic consistency relations for cosmological structures
that do not vanish at equal times and can thus be measured in surveys. These
rely on cross-correlations between the density and velocity, or momentum,
fields. Indeed, the uniform transport of small-scale structures by long
wavelength modes, which cannot be detected at equal times by looking at density
correlations only, gives rise to a shift in the amplitude of the velocity field
that could be measured. These consistency relations only rely on the weak
equivalence principle and Gaussian initial conditions. They remain valid in the
non-linear regime and for biased galaxy fields. They can be used to constrain
non-standard cosmological scenarios or the large-scale galaxy bias.Comment: 5 page
Bio-Hydrocarbons through Catalytic Pyrolysis of Used Cooking Oils: towards sustainable jet and road fuels
A partial classification of simple regular representations of bimodules type over
In this paper, we use Galois descent techniques to find suitable
representatives of the regular simple representations of the species of type
over , where is a positive integer and
is the field of Laurent series over the
complexes. These regular representations are essential for the definition of
canonical algebras. Our work is inspired by the work done for species of type
on in ``A model for the canonical algebras of bimodules type (1, 4)
over truncated polynomial rings''. We presents all the regular simple
representations on the -crown quiver, and from these, we establish a partial
classification of regular simple representations of bimodules type .Comment: 26 pages, comments welcom
Autothermal slow pyrolysis of poplar wood chips in an auger reactor
Please click Additional Files below to see the full abstrac
A Systematic Evaluation of a Multidisciplinary Social Work– Lawyer Elder Mistreatment Intervention Model
This study introduces a conceptually based, systematic evaluation process employing multivariate techniques to evaluate a multidisciplinary social work–lawyer intervention model (JASA-LEAP). Logistic regression analyses were used with a random sample of case records (n = 250) from three intervention sites. Client retention, program fidelity, and exposure to multidisciplinary services were significantly related to reduction in mistreatment risk at case closure. Female gender, married status, and living with perpetrator significantly predicted unfavorable outcomes. This study extends the elder mistreatment program evaluation literature beyond descriptive/bivariate evaluation strategies. Findings suggest that a multidisciplinary social work–lawyer elder mistreatment intervention model is a successful approach
A High Resolution Survey of the Galactic Plane at 408 MHz
The interstellar medium is a complex 'ecosystem' with gas constituents in the
atomic, molecular, and ionized states, dust, magnetic fields, and relativistic
particles. The Canadian Galactic Plane Survey has imaged these constituents
with angular resolution of the order of arcminutes. This paper presents radio
continuum data at 408 MHz over the area 52 degrees < longitude < 193 degrees,
-6.5 degrees < latitude < 8.5 degrees, with an extension to latitude = 21
degrees in the range 97 degrees < longitude < 120 degrees, with angular
resolution 2.8' x 2.8' cosec(declination). Observations were made with the
Synthesis Telescope at the Dominion Radio Astrophysical Observatory as part of
the Canadian Galactic Plane Survey. The calibration of the survey using
existing radio source catalogs is described. The accuracy of 408-MHz flux
densities from the data is 6%. Information on large structures has been
incorporated into the data using the single-antenna survey of Haslam (1982).
The paper presents the data, describes how it can be accessed electronically,
and gives examples of applications of the data to ISM research.Comment: Accepted for publication in the Astronomical Journa
Flavour-Changing Neutral Currents and Leptophobic Z' Gauge Bosons
Leptophobic Z' gauge bosons can appear in models with an E_6 gauge symmetry.
We show that flavour-changing neutral currents can be generated in some of
these models due to the mixing of the ordinary d_R, s_R and b_R quark fields
with the exotic h_R. Because the Z' does not couple to charged leptons, the
constraints on the flavour-changing couplings U^{Z'}_{db} and U^{Z'}_{sb} are
relatively weak. Indeed, B_q--Bbar_q mixing (q=d,s) can be dominated by Z'
exchange, which will affect CP-violating rate asymmetries in B decays. Rare
hadronic B decays can also be affected, while decays involving charged leptons
will be unchanged.Comment: 11 pages, LaTeX, no figure
Regulation of β cell glucokinase by S-nitrosylation and association with nitric oxide synthase
Glucokinase (GK) activity plays a key role in glucose-stimulated insulin secretion from pancreatic β cells. Insulin regulates GK activity by modulating its association with secretory granules, although little is known about the mechanisms involved in regulating this association. Using quantitative imaging of multicolor fluorescent proteins fused to GK, we found that the dynamic association of GK with secretory granules is modulated through nitric oxide (NO). Our results in cultured β cells show that insulin stimulates NO production and leads to S-nitrosylation of GK. Furthermore, inhibition of NO synthase (NOS) activity blocks insulin-stimulated changes in both GK association with secretory granules and GK conformation. Mutation of cysteine 371 to serine blocks S-nitrosylation of GK and causes GK to remain tightly bound to secretory granules. GK was also found to interact stably with neuronal NOS as detected by coimmunoprecipitation and fluorescence resonance energy transfer. Finally, attachment of a nuclear localization signal sequence to NOS drives GK to the nucleus in addition to its normal cytoplasmic and granule targeting. Together, these data suggest that the regulation of GK localization and activity in pancreatic β cells is directly related to NO production and that the association of GK with secretory granules occurs through its interaction with NOS
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