1,147 research outputs found
WWP1 knockout in mice exacerbates obesity-related phenotypes in white adipose tissue but improves whole-body glucose metabolism
Enzootic bovine leukosis accompanied by splenomegaly in an 8-month-old calf
ΔΕΝ ΔΙΑΤΙΘΕΤΑΙ ΠΕΡΙΛΗΨΗIn this report, an 8-month-old calf (crossbred, Holstein × Japanese Black) developed fever and accompanied abomasum displacement. Blood chemical test showed remarkably high values of white blood cell count and heteromorphic lymphocytes. In pathological appraisal, enlarged splenomegaly and swelling of the lymph nodes were observed. Histopathological examination revealed invasion of tumor cells derived from B1 cells into systemic lymph nodes, liver and spleen. The provirus loads of bovine leukemia virus (BLV) was 1,439 copies per 10 ng DNA by using real time PCR. In conclusion, this case was diagnosed as bovine leukemia caused by BLV infection with a huge splenomegaly
Cosmic Evolution of Stellar-mass Black Hole Merger Rate in Active Galactic Nuclei
Binary black hole mergers encode information about their environment and the
astrophysical processes that led to their formation. Measuring the redshift
dependence of their merger rate will help probe the formation and evolution of
galaxies and the evolution of the star formation rate. Here we compute the
cosmic evolution of the merger rate for stellar-mass binaries in the disks of
Active Galactic Nuclei (AGNs). We focus on recent evolution out to redshift
, covering the accessible range of current Earth-based gravitational-wave
observatories. On this scale, the AGN population density is the main
contributor to redshift-dependence. We find that the AGN-assisted merger rate
does not meaningfully evolve with redshift, differentiating this channel from
field binaries and some other dynamical formation scenarios.Comment: 6 pages, 2 figure
Gravitational wave source populations: Disentangling an AGN component
The astrophysical origin of the over 90 compact binary mergers discovered by
the LIGO and Virgo gravitational wave observatories is an open question. While
the unusual mass and spin of some of the discovered objects constrain
progenitor scenarios, the observed mergers are consistent with multiple
interpretations. A promising approach to solve this question is to consider the
observed distributions of binary properties and compare them to expectations
from different origin scenarios. Here we describe a new hierarchical population
analysis framework to assess the relative contribution of different formation
channels simultaneously. For this study we considered binary formation in AGN
disks along with phenomenological models, but the same framework can be
extended to other models. We find that high-mass and high-mass-ratio binaries
appear more likely to have an AGN origin compared to the same origin as
lower-mass events. Future observations of high-mass black hole mergers could
further disentangle the AGN component from other channels.Comment: 7 pages, 4 figures, and 1 tabl
Soliton excitations in halogen-bridged mixed-valence binuclear metal complexes
Motivated by recent stimulative observations in halogen (X)-bridged binuclear
transition-metal (M) complexes, which are referred to as MMX chains, we study
solitons in a one-dimensional three-quarter-filled charge-density-wave system
with both intrasite and intersite electron-lattice couplings. Two distinct
ground states of MMX chains are reproduced and the soliton excitations on them
are compared. In the weak-coupling region, all the solitons are degenerate to
each other and are uniquely scaled by the band gap, whereas in the
strong-coupling region, they behave differently deviating from the scenario in
the continuum limit. The soliton masses are calculated and compared with those
for conventional mononuclear MX chains.Comment: 9 pages, 10 figures embedded, to be published in J. Phys. Soc. Jpn.
71, No. 1 (2002
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