1,429 research outputs found
Psoas abscess due to mycobacterium tuberculosis: a case report
Iliopsoas abscess (IPA), a collection of pus in the iliopsoas compartment that has traditionally been classified into primary and secondary according to its origin, is an infrequent condition worldwide. Mostly active TB is confined to the lung, but approximately 15% are extrapulmonary. The most common types of extrapulmonary TB are, in descending order of frequency, pleural, lymphatic, bone and joint, genitourinary, miliary disease, meningitis, and peritonitis. Tuberculosis (TB) remains as one of the leading opportunistic infection in patients in developing countries. Here we report a rare case of psoas abscess of tubercular origin in patient who presented with back pain and limping. Diagnosis is done based on history, physical examination, plain radiology, microbiological investigation and CT scan of abdomen which revealed a large psoas abscess caused by M. tuberculosis. Patient was diagnosed as psoas abscess due to Mycobacterium tuberculosis and treated empirically with DOTS category I and significant functional improvement was noted on follow up
Cooperative Emission of a Coherent Superflash of Light
We investigate the transient coherent transmission of light through an
optically thick cold stron-tium gas. We observe a coherent superflash just
after an abrupt probe extinction, with peak intensity more than three times the
incident one. We show that this coherent superflash is a direct signature of
the cooperative forward emission of the atoms. By engineering fast transient
phenomena on the incident field, we give a clear and simple picture of the
physical mechanisms at play.Comment: 4 Fig., 5 page
Tight lower bound to the geometric measure of quantum discord
Dakic, Vedral and Brukner [Physical Review Letters \tf{105},190502 (2010)]
gave a geometric measure of quantum discord in a bipartite quantum state as the
distance of the state from the closest classical quantum (or zero discord)
state and derived an explicit formula for a two qubit state. Further, S.Luo and
S.Fu [Physical Review A \tf{82}, 034302 (2010)] obtained a generic form of this
geometric measure for a general bipartite state and established a lower bound.
In this brief report we obtain a rigorous lower bound to the geometric measure
of quantum discord in a general bipartite state which dominates that obtained
by S.Luo and S.Fu.Comment: 10 pages,2 figures. In the previous versions, a constraint was
ignored while optimizing the second term in Eq.(5), in which case, only a
lower bound on the geometric discord can be obtained. The title is also
consequently changed. Accepted in Phys.Rev.
A novel modulated phase of liquid crystals: Covariant elasticity in the context of soft, achiral smectic-C materials
Ginzburg-Landau-de Gennes -type covariant theories are extensively used in
connection with twist grain boundary (TGB) phases of chiral smectogens. We
analyze the stability conditions for the linear, covariant elasticity theory of
smectic-C liquid crystals in the context of achiral materials, and predict an
equilibrium modulated structure with an oblique wavevector. We suggest that a
previous experimental observation of stripes in smectic-C is consistent with
the predicted structure.Comment: 4 pages, 3 figure
ANALYSIS OF SOFT STORY MULTISTORED STEEL STRUCTURE BUILDING
This paper focusing on soft storey Multi-storey steel structure buildings, These building are becoming increasingly common and economical in developed and developing countries with the increase in urbanization all over the world. Many of these buildings do not have structural walls at ground floor level to increase the flexibility of the space for recreational use such as parking or for retail or commercial use. these buildings which possess storey that are significantly weaker or more flexible than adjacent storey are known as soft storey buildings, these are characterized by having a story which has a lot of open space. while the un obstructed space of the soft story might be aesthetically or commercially desirable, it also means that there are less opportunities to install shear walls, specialized walls which are designed to distribute lateral forces so that a building can cope with the swaying characteristic of an earthquake. Soft-storey is also called as flexible storey. a large number of buildings with soft storey have been built in recent year. but it showed poor performance during past earthquake. soft story’s are subjected to larger lateral loads during earthquakes and under lateral loads their lateral deformations are greater than those of other floors so the design of structural members of soft stories is critical and it should be different from the upper floors. In this thesis “ analysis of soft-storey for Multi-storeyed steel structure building in zone ” 2 “, applying the analyse and explore the behaviour of soft-storey at different floor level of building under seismic load actions respectively
Characteristics of Fatal Cases of Pandemic Influenza A (H1N1) from September 2009 to January 2010 in Saurashtra Region, India
Background: India reported first case of 2009 pandemic influenza A (H1N1) virus infection in May, 2009 and Saurashtra region in August, 2009. We describe the characteristics of fatal cases of 2009 influenza A (H1N1) infection reported in Saurashtra region. Methods: From September, 2009 to January, 2010, we observed 71 fatal cases that were infected with 2009 influenza A (H1N1) virus and admitted in different hospitals in Rajkot city. Real-time reverse-transcriptase-polymerase-chain-reaction (RT-PCR) testing was used to confirm infection; the clinico-epidemiological features were observed and documented. Results: Median age of the deceased (71) was 29 years, and 57.7% were females. Median time observed was 5 days from onset of illness to diagnosis of influenza A (H1N1), and 57.7% were referred from general practitioner (OR=0.42, CI=0.24-0.74). Median hospital stay reported was 3 days. All admitted patients received oseltamivir, but only 16.9% received it within 2 days of onset of illness. The most common symptoms were cough (97.2%), fever (93%), sore throat and shortness of breath. Co-morbid conditions were present in almost half of the patients who ultimately died, the most common of which was pregnancy (OR=0.15, CI=0.04-0.52). Radiological pneumonia was reported in 98% patients. Conclusion: Residing in urban area, delayed referral from general practitioner, presence of co-existing condition, especially pregnancy was responsible for mortality among influenza A (H1N1) infected positive
Multipartite entanglement in fermionic systems via a geometric measure
We study multipartite entanglement in a system consisting of
indistinguishable fermions. Specifically, we have proposed a geometric
entanglement measure for N spin-1/2 fermions distributed over 2L modes (single
particle states). The measure is defined on the 2L qubit space isomorphic to
the Fock space for 2L single particle states. This entanglement measure is
defined for a given partition of 2L modes containing m >= 2 subsets. Thus this
measure applies to m <= 2L partite fermionic system where L is any finite
number, giving the number of sites. The Hilbert spaces associated with these
subsets may have different dimensions. Further, we have defined the local
quantum operations with respect to a given partition of modes. This definition
is generic and unifies different ways of dividing a fermionic system into
subsystems. We have shown, using a representative case, that the geometric
measure is invariant under local unitaries corresponding to a given partition.
We explicitly demonstrate the use of the measure to calculate multipartite
entanglement in some correlated electron systems. To the best of our knowledge,
there is no usable entanglement measure of m > 3 partite fermionic systems in
the literature, so that this is the first measure of multipartite entanglement
for fermionic systems going beyond the bipartite and tripartite cases.Comment: 25 pages, 8 figure
Plant genetic engineering, climate change and food security
This paper explores whether crop genetic engineering can contribute to addressing food security, as well as enhancing human nutrition and farming under a changing climate. The review is based on peer-refereed literature, using results to determine the potential of this gene technology. It also provides a brief summary of issues surrounding this genetic enhancement approach to plant breeding, and the impacts on farming, livelihoods, and the environment achieved so far. The genetic engineering pipeline looks promising, particularly for adapting more nutritious, input-efficient crops in the development of the world’s farming systems
The Groenewold - Moyal Plane and its Quantum Physics
Quantum theories constructed on the noncommutative spacetime called the
Groenewold-Moyal(GM) plane exhibit many interesting properties such as
causality violation, Lorentz and CPT non-invariance and twisted statistics.
Such violations lead to many striking features that may be tested
experimentally. Thus these theories predict Pauli-forbidden transitions due to
twisted statistics, anisotropies and acausal effects in the cosmic microwave
background radiation in correlations of observables and Lorentz and CPT
violations in scattering amplitudes. Such features of quantum physics on the GM
plane are surveyed in this review.Comment: 8 pages, Based on the talk given by APB at the XXV Max Born Symposium
on Planck Scale Physics, Wroclaw, 29 June-3 July 200
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