543 research outputs found
Soft and Ultra-Soft X-ray Detector Array Systems for Measurement of Edge MHD Modes in the Large Helical Device
Aperiodic nano-photonic design
The photon scattering properties of aperiodic nano-scale dielectric
structures can be tailored to closely match a desired response by using
adaptive algorithms for device design. We show that broken symmetry of
aperiodic designs provides access to device functions not available to
conventional periodic photonic crystal structures.Comment: 23 pages, LaTex, 8 postscript figure
Evaluation of the Stability of SiC/SiC Composites for Inertial Fusion Dry Wall Chamber to High Temperature Irradiation and Design Study Based on the Material Properties
Lensing Effects on Gravitational Waves in a Clumpy Universe -Effects of Inhomogeneity on the Distance-Redshift Relation-
The distance-redshift relation determined by means of gravitational waves in
the clumpy universe is simulated numerically by taking into account the effects
of gravitational lensing. It is assumed that all of the matter in the universe
takes the form of randomly distributed point masses, each of which has the
identical mass . Calculations are carried out in two extreme cases:
and , where denotes the
wavelength of gravitational waves. In the first case, the distance-redshift
relation for the fully homogeneous and isotropic universe is reproduced with a
small distance dispersion, whereas in the second case, the distance dispersion
is larger. This result suggests that we might obtain information about the
typical mass of lens objects through the distance-redshift relation gleaned
through observation of gravitational waves of various wavelengths. In this
paper, we show how to set limitations on the mass through the observation
of gravitational waves in the clumpy universe model described above.Comment: 35 pages, 21 figures, ApJ accepted versio
Bilirubin as an Anti-oxidant for Surgical Stress: A Preliminary Report of Bilirubin Oxidative Metabolites
Background Bilirubin has been recognized as an antioxidant.
The purpose of this study was to examine
whether bilirubin would act as an antioxidant for
surgical stress in humans. Materials and Methods
Serum bilirubin and urinary bilirubin oxidative
metabolites (BOM) were measured in 96 patients
who underwent surgery. The antioxidant activity
of bilirubin was assessed using BOM measured
by enzyme-linked immunosorbent assay with an
anti-bilirubin monoclonal antibody. Results Serum
bilirubin levels increased after surgery in all 96
patients (p<0.01), but did not correlate with operation
time or blood loss (p=0.53 and p=0.28, respectively).
BOM increased only in patients with major
surgeries (p=0.048). Significant correlations between
BOM and operation time and blood loss were found
(p<0.01). Conclusions Bilirubin appears to act as an
antioxidant for invasive surgery in humans. Urinary
BOM could be a reliable marker for the degree of
surgical stress
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