3,257 research outputs found
A novel multiplex PCR system for the detection of virulence associated genes of E. coli O157:H7 from food system
In view of the importance E. coli serotype 0157:H7 in human diseases, an easy and quick system is desirable to detect toxin producing strains. In this report, we describe standardization of a novel multiplex Polymerase Chain Reaction (mPCR) assay for simultaneous detection of four important genes associated with the organism E. coli 0157:H7 viz., stx 1, stx 2, eae A, hly A along with an internal amplification control (IAC). The mPCR method developed in the present study is sensitive enough to detect cells as low as 103 CFU ml-1 or g-1 of the food samples. The E. coli 0157:H7 strains having been identified to contain the gene in the mPCR were unequivocally detected positive for the serological and conventional culture method. As E. coli 0157:H7 is qualified as biowarfare agent; this mPCR system is of immense help in detecting them during emergencies of biological war and suspected outbreaks. 
Design data for ablators. Part III - Mathematical model for decomposition of phenol-formaldehyde ablators Final report
Mathematical model for pyrolytic mechanics of phenol formaldehyde ablator
CP violation in associated charged Higgs boson production with a single top at the LHC
We explore the CP violation in the charged Higgs production associated with a
top quark at the LHC in the MSSM. The supersymmetric phases of gaugino masses
and trilinear terms lead to a CP violating asymmetry of the cross section
in the process through loop corrections to the
vertex. We find that a CP violation more than 10 % is possible if the
charged Higgs boson is heavy enough.Comment: 8 pages including 5 eps figures, JHEP, corrections mad
In-Network Outlier Detection in Wireless Sensor Networks
To address the problem of unsupervised outlier detection in wireless sensor
networks, we develop an approach that (1) is flexible with respect to the
outlier definition, (2) computes the result in-network to reduce both bandwidth
and energy usage,(3) only uses single hop communication thus permitting very
simple node failure detection and message reliability assurance mechanisms
(e.g., carrier-sense), and (4) seamlessly accommodates dynamic updates to data.
We examine performance using simulation with real sensor data streams. Our
results demonstrate that our approach is accurate and imposes a reasonable
communication load and level of power consumption.Comment: Extended version of a paper appearing in the Int'l Conference on
Distributed Computing Systems 200
The SUSY EW-like corrections to top pair production in photon-photon collisions
We studied the one-loop contributions of the gaugino-Higgsino-sector to the
process of top-pair production via fusion at NLC in frame of
the Minimal Supersymmetric Model(MSSM). We find that the corrections to and are found to
be significant and can approach to a few percent and one percent, respectively.
Furthermore, the dependences of the corrections on the supersymmetric
parameters are also investigated. The corrections are not sensitive to
(or ) when
(or ) and are weakly dependent on the with
(or ) being large enough. But they are sensitive to the c.m.s.
energy of the incoming photons.Comment: LaTex, 33 pages, 8 Eps figuer
Forecasting performance of mixed data sampling (MIDAS) regressions, autoregressive distributed lag (ADL) model and hybrid of GARCH-MIDAS model: a comparative study
This paper considers the Comparison of forecasting performance between Mixed Data sampling (MIDAS) Regressions model, Autoregressive distributed lag (ARDL) Model and hybrid of GARCH-MIDAS. The data employed for this study was secondary type in nature for all the variables and it is obtained from the publications of Central Bank of Nigerian bulletin, National Bureau of Statistics and World Bank Statistics Database dated, January, 2005 to Dec, 2019. The result of unit root test shows that all variables are stationary at level and after first differences at 5% level of significant. From the results we found that F-statistics 1.895554 is inside the regions defined as the lower and upper bound (3.62 and 4.16) at 5% level of significant, this implies that there’s no long-run relationship between dependent variable (NSE) and independent Variable (CC). using forecasting evaluations with shows that that GARCH-MIDAS has a least value of RMSE and MAPE than ARDL and MIDAS model (1823.531 and 3.976542) is least than for MIDAS and Ardl models (2372.846, 4.765421 and 2134.732, 5.952348). Finally, we can conclude that GARCH- MIDAS model outperform MIDAS and ARDL models of Nigeria Stock Exchange
Charged Higgs production from SUSY particle cascade decays at the LHC
We analyze the cascade decays of the scalar quarks and gluinos of the Minimal
Supersymmetric extension of the Standard Model, which are abundantly produced
at the Large Hadron Collider, into heavier charginos and neutralinos which then
decay into the lighter ones and charged Higgs particles, and show that they can
have substantial branching fractions. The production rates of these Higgs
bosons can be much larger than those from the direct production mechanisms, in
particular for intermediate values of the parameter , and could
therefore allow for the detection of these particles. We also discuss charged
Higgs boson production from direct two-body top and bottom squark decays as
well as from two- and three-body gluino decays.Comment: 30 pages with 10 figures, latex. Uses axodraw.sty and epsfig.st
Top quark pair production via polarized and unpolarized photons in Supersymmetric QCD
QCD corrections to top quark pair production via fusion of both polarized and
unpolarized photons are calculated in Supersymmetric Model. The corrections are
found to be sizable. The dependence of the corrections on the masses of the
supersymmetric particles is also investigated. Furthermore, we studied CP
asymmetry effects arising from the complex couplings in the MSSM. The CP
violating parameter can reach for favorable parameter values.Comment: 26 pages, LaTex, including 12 figures in 12 eps files. submitted to
Phys. Rev.
Charged Higgs- and R-Parity-Violating Slepton-Strahlung at Hadron Colliders
It is shown that the radiation of a charged Higgs boson off a
third-generation quark (charged-Higgs-strahlung) provides an important channel
for the discovery of the charged Higgs at hadron colliders. Equivalently, in
supersymmetric models with explicit lepton-number (R-parity) violation,
sleptons may also be produced in association with quarks (slepton-strahlung).
Higgs- and slepton-strahlung production cross sections are given for both the
Tevatron and the LHC. The LHC cross sections imply that heavy (TeV)
charged Higgs bosons can be produced via charged-Higgs-strahlung and that
strahlung production of charged sleptons is possible even for small R-parity
violating couplings. The possible discovery of sleptons through this channel
offers a surprising handle on models of neutrino masses.Comment: 23 pages, LaTex + RevTex, 11 figures (included). Title modified.
(Published version.
SUSY-QCD decoupling properties in H+ -> t \bar b decay
The SUSY-QCD radiative corrections to the \Gamma (H+ -> t \bar b) partial
decay width are analyzed within the Minimal Supersymmetric Standard Model at
the one-loop level, {\mathcal O}(\alpha_s), and in the decoupling limit. We
present the analytical expressions of these corrections in the large SUSY
masses limit and study the decoupling behaviour of these corrections in various
limiting cases. We find that if the SUSY mass parameters are large and of the
same order, the one loop SUSY-QCD corrections {\it do not decouple}. The
non-decoupling contribution is enhanced by \tan \beta and therefore large
corrections are expected in the large \tan \beta limit. In contrast, we also
find that the SUSY-QCD corrections decouple if the masses of either the squarks
or the gluinos are separately taken large.Comment: LaTeX, 33 pages, 7 figure included. Uses cite.st
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