236 research outputs found
Duplex Moiety Kidney With Ureteral Ectopia; A Case Series
Ureteral ectopia is a common condition presenting as incontinence in females and incidentally detected in males. The diagnosis requires thorough radiological investigations to delineate the anatomy and formulate the treatment. The prognosis is generally excellent. We presented a series of three cases of ureteral ectopia and discussion regarding their management.Keywords: Female; Urinary Incontinence; Ectopic Ureter; Duplex Moiety Kidney
Jamming Attack Detection and Evaluating Using Wireless Application
When data is transferred from one host to another host,attacker may try to attack the packet or data which is in transit.Inorder to avoid such kind of attack in time critical wireless application and delivery message securely in wireless application. In this paper, we aim at modeling and detecting jamming attacks against time-critical wireless networks.To measure network performance ,packet loss and throughput metrics are used . To quantify the performance of time-critical applications,message invalidation ratio metric are used. This approach is inspired by the similarity between the behavior of a jammer who attempts to disrupt the delivery of a message and the behavior of a gambler who intends to win a gambling game. By gambling-based modeling and real-time modules, we can successful delivery time-critical message under a variety of jamming attacks.
DOI: 10.17762/ijritcc2321-8169.15038
Co-axial dual-core resonant leaky fibre for optical amplifiers
We present a co-axial dual-core resonant leaky optical fibre design, in which
the outer core is made highly leaky. A suitable choice of parameters can enable
us to resonantly couple power from the inner core to the outer core. In a
large-core fibre, such a resonant coupling can considerably increase the
differential leakage loss between the fundamental and the higher order modes
and can result in effective single-mode operation. In a small-core single-mode
fibre, such a coupling can lead to sharp increase in the wavelength dependent
leakage loss near the resonant wavelength and can be utilized for the
suppression of amplified spontaneous emission and thereby gain equalization of
an optical amplifier. We study the propagation characteristics of the fibre
using the transfer matrix method and present an example of each, the
large-mode-area design for high power amplifiers and the wavelength tunable
leakage loss design for inherent gain equalization of optical amplifiers.Comment: 6 page
The Dispersion Velocity of Galactic Dark Matter Particles
The self-consistent spatial distribution of particles of Galactic dark matter
is derived including their own gravitational potential, as also that of the
visible matter of the Galaxy. In order to reproduce the observed rotation curve
of the Galaxy the value of the dispersion velocity of the dark matter
particles, \rmsveldm, should be \sim 600\kmps or larger.Comment: RevTex, 4 pages, 1 ps figure, accepted for publication in Physical
Review Letter
Colossal magnetoresistance in EuZnP and its electronic and magnetic structure
We investigate single crystals of the trigonal antiferromagnet EuZnP
() by means of electrical transport, magnetization
measurements, X-ray magnetic scattering, optical reflectivity, angle-resolved
photoemission spectroscopy (ARPES) and ab-initio band structure calculations
(DFT+U). We find that the electrical resistivity of EuZnP increases
strongly upon cooling and can be suppressed in magnetic fields by several
orders of magnitude (CMR effect). Resonant magnetic scattering reveals a
magnetic ordering vector of , corresponding to an
-type antiferromagnetic (AFM) order, below . We
find that the moments are canted out of the plane by an angle of about
degrees and tilted away from the [100] - direction
by . We observe nearly isotropic magnetization
behavior for low fields and low temperatures which is consistent with the
magnetic scattering results. The magnetization measurements show a deviation
from the Curie-Weiss behavior below , the temperature below
which also the field dependence of the material's resistivity starts to
increase. An analysis of the infrared reflectivity spectrum at
allows us to resolve the main phonon bands and intra-/interband transitions,
and estimate indirect and direct band gaps of
and ,
respectively, which are in good agreement with the theoretically predicted
ones. The experimental band structure obtained by ARPES is nearly
-independent above and below . The comparison of the theoretical
and experimental data shows a weak intermixing of the Eu 4 states close to
the point with the bands formed by the phosphorous 3 orbitals
leading to an induction of a small magnetic moment at the P sites
Amygdala circuitry mediating reversible and bidirectional control of anxiety
Anxiety—a sustained state of heightened apprehension in the absence of immediate threat—becomes severely debilitating in disease states. Anxiety disorders represent the most common of psychiatric diseases (28% lifetime prevalence) and contribute to the aetiology of major depression and substance abuse. Although it has been proposed that the amygdala, a brain region important for emotional processing, has a role in anxiety, the neural mechanisms that control anxiety remain unclear. Here we explore the neural circuits underlying anxiety-related behaviours by using optogenetics with two-photon microscopy, anxiety assays in freely moving mice, and electrophysiology. With the capability of optogenetics to control not only cell types but also specific connections between cells, we observed that temporally precise optogenetic stimulation of basolateral amygdala (BLA) terminals in the central nucleus of the amygdala (CeA)—achieved by viral transduction of the BLA with a codon-optimized channelrhodopsin followed by restricted illumination in the downstream CeA—exerted an acute, reversible anxiolytic effect. Conversely, selective optogenetic inhibition of the same projection with a third-generation halorhodopsin (eNpHR3.0) increased anxiety-related behaviours. Importantly, these effects were not observed with direct optogenetic control of BLA somata, possibly owing to recruitment of antagonistic downstream structures. Together, these results implicate specific BLA–CeA projections as critical circuit elements for acute anxiety control in the mammalian brain, and demonstrate the importance of optogenetically targeting defined projections, beyond simply targeting cell types, in the study of circuit function relevant to neuropsychiatric disease
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