115 research outputs found
Hall Current Effects on Free Convection Casson Fluid Flow in a Rotating System with Convective Boundary Conditions and Constant Heat Source
In this paper we investigated an unsteady free convection flow of casson fluid bounded by a moving vertical flat plate in a rotating system with convective boundary conditions. The governing equations are solved analytically by using perturbation technique. Finally the effects of various dimensionless parameters like inclined angle, Casson parameter, Heat source and Suction parameter on velocity, temperature, friction factor and local Nusselt number are discussed with the help of graphs and tables. Through this study, it is found that increasing values of casson parameter reduces the velocity and increase in inclined magnetic field or hall current parameter enhances the velocity profiles. Keywords: Casson fluid, Rotation, inclined magnetic field, MHD, Heat source
A study of correlation of antenatal uterine scar thickness by transabdominal ultrasound with intraoperative lower uterine segment scar grading in elective repeat cesarean delivery
Background: Caesarean section (CS) is the most common obstetric surgery performed world-wide. The objective of this study was to correlate the antenatal sonographic lower uterine segment (LUS) scar thickness in women with previous one cesarean section with intra operative LUS scar grading.Methods: A Prospective observational study was conducted from December 2014 to November 2015. In a tertiary care center. 200 pregnant women from ANC clinic with previous one LSCS were recruited. Transabdominal USG done between 36-38 weeks. LUS thickness was measured from bladder wall-myometrium interphase and myometrium-chorioamniotic membrane inter phase. Intraoperative grading of LUS scar was done. Based on grading of scar participants were assigned into scar dehiscence group (grade III and IV LUS scar) and non-dehiscence group (Grade I and II LUS scar).Results: Mean LUS thickness was 3.41±0.623 mm (range: 2-7 mm). Mean LUS thickness in the scar dehiscence group and non-dehiscence group was 2.98±0.55 mm and 3.48±0.60 mm (P value 3.5 mm, can be counselled regarding TOLAC if not contraindicated
Effect of Data Preprocessing in the Detection of Epilepsy using Machine Learning Techniques
1066-1077Epilepsy is the one of the most neurological disorder in our day to day life. It affects more than seventy million people
throughout the world and becomes second neurological diseases after migraine. Manual inspection of seizures is time
consuming and laborious task. Nowadays automated techniques are evolved for detection of seizures by means of signal
processing or through machine learning techniques. In this article, supervised learning algorithms are applied to the EEG dataset
and performance are measured in terms of Accuracy, precision and few more. Machine learning algorithm plays a vital role in
classification and regression problem in the past few decades. The most important reason for this is a large set of signal or data
are trained and the test signals are evaluated using training network. To get the better accuracy, the input data are first
normalized carefully. The various normalization techniques applied in this article are Z-Score, Min-Max, Logarithmic and
Square Root Normalization. For simulation purpose, Electroencephalography (EEG) signal from UCI Machine Learning
Respiratory are used. Dataset consists of 11500 patient details with 5 different cases and each signal are recorded for the
duration of 23 seconds. Spider chart is used to show the metric value in detail. It is observed from the result that supervised
learning algorithm yields a better result compared to logistic and KNN (K-Nearest Neighbor) algorithm at high iteration
Super-A-polynomials for Twist Knots
We conjecture formulae of the colored superpolynomials for a class of twist
knots where p denotes the number of full twists. The validity of the
formulae is checked by applying differentials and taking special limits. Using
the formulae, we compute both the classical and quantum super-A-polynomial for
the twist knots with small values of p. The results support the categorified
versions of the generalized volume conjecture and the quantum volume
conjecture. Furthermore, we obtain the evidence that the Q-deformed
A-polynomials can be identified with the augmentation polynomials of knot
contact homology in the case of the twist knots.Comment: 22+16 pages, 16 tables and 5 figures; with a Maple program by Xinyu
Sun and a Mathematica notebook in the ancillary files linked on the right; v2
change in appendix B, typos corrected and references added; v3 change in
section 3.3; v4 corrections in Ooguri-Vafa polynomials and quantum
super-A-polynomials for 7_2 and 8_1 are adde
Working Group Report: Neutrino and Astroparticle Physics
This is the report of neutrino and astroparticle physics working group at
WHEPP-8. We present the discussions carried out during the workshop on selected
topics in the above fields and also indicate progress made subsequently. The
neutrino physics subgroup studied the possibilites of constraining neutrino
masses, mixing and CPT violation in lepton sector from future experiments.
Neutrino mass models in the context of abelian horizontal symmetries, warped
extra dimensions and in presence of triplet Higgs were studied. Effect of
threshold corrections on radiative magnification of mixing angles was
investigated. The astroparticle physics subgroup focused on how various
particle physics inputs affect the CMBR fluctuation spectrum, and on brane
cosmology. This report also contains an introduction on how to use the publicly
available code CMBFAST to calculate the CMBR fluctuations.Comment: Prepared for the 8th Workshop on High-Energy Physics Phenomenology
(WHEPP-8), IIT Mumbai, India, 5-16 Jan 200
Challenges of beta-deformation
A brief review of problems, arising in the study of the beta-deformation,
also known as "refinement", which appears as a central difficult element in a
number of related modern subjects: beta \neq 1 is responsible for deviation
from free fermions in 2d conformal theories, from symmetric omega-backgrounds
with epsilon_2 = - epsilon_1 in instanton sums in 4d SYM theories, from
eigenvalue matrix models to beta-ensembles, from HOMFLY to super-polynomials in
Chern-Simons theory, from quantum groups to elliptic and hyperbolic algebras
etc. The main attention is paid to the context of AGT relation and its possible
generalizations.Comment: 20 page
S-duality as a beta-deformed Fourier transform
An attempt is made to formulate Gaiotto's S-duality relations in an explicit
quantitative form. Formally the problem is that of evaluation of the Racah
coefficients for the Virasoro algebra, and we approach it with the help of the
matrix model representation of the AGT-related conformal blocks and Nekrasov
functions. In the Seiberg-Witten limit, this S-duality reduces to the Legendre
transformation. In the simplest case, its lifting to the level of Nekrasov
functions is just the Fourier transform, while corrections are related to the
beta-deformation. We calculate them with the help of the matrix model approach
and observe that they vanish for beta=1. Explicit evaluation of the same
corrections from the U_q(sl(2)) infinite-dimensional representation formulas
due to B.Ponsot and J.Teshner remains an open problem.Comment: 21 page
Characterization of crop residues from false banana/Ensete ventricosum/in Ethiopia in view of a full-resource valorization
Research ArticleFalse banana /Ensete ventricosum [Welw.] Cheesman/ is exploited as a food crop in
Ethiopia where it represents an important staple food. The plant is harvested and large
amounts of biomass residues are originated, mainly from the pseudo stem (i.e., fiber bundles
obtained from the leaf sheaths after being scrapped to produce starchy food) and the
inflorescence stalk. These materials were studied in relation to their summative chemical
composition, composition of lignin, lipophilic and polar extracts. Moreover, their structural
characteristics, in view of their valorization, were scrutinized. The analytical studies were
performed with the aid of FTIR, GC/MS, Py-GC/MS and SEM. The fiber bundles are aggregates
of mainly long and slender fibers with low ash, extractives and lignin contents (3.8%.
4.4% and 10.5% respectively) and high holocellulose and α-cellulose contents (87.5% and
59.6% respectively). The hemicelluloses in the fibers are mostly highly acetylated xylans
and the lignin is of the H-type (H:G:S, 1:0.7:0.8). This lignin composition is in line with the
FTIR peaks at 1670 cm-1 and 1250 cm-1.The inflorescence stalk has high ash content
(12.3% in the main stalk and 24.6% in fines) with a major proportion of potassium, high
extractives (25.9%), and low lignin and α-cellulose contents (5.8% and 17.9% respectively).
The stalk includes numerous starch granules in the cellular structure with the predominant
presence of parenchyma. The potential valorization routes for these materials are clearly different.
The fiber bundles could be used as a fiber source for paper pulp production with the
possibility of a prior hemicelluloses removal while the inflorescence stalk has nutritional
value for food and fodder. Furthermore, it can also be used for sugar fermentation productsinfo:eu-repo/semantics/publishedVersio
Movement Protein Pns6 of Rice dwarf phytoreovirus Has Both ATPase and RNA Binding Activities
Cell-to-cell movement is essential for plant viruses to systemically infect host plants. Plant viruses encode movement proteins (MP) to facilitate such movement. Unlike the well-characterized MPs of DNA viruses and single-stranded RNA (ssRNA) viruses, knowledge of the functional mechanisms of MPs encoded by double-stranded RNA (dsRNA) viruses is very limited. In particular, many studied MPs of DNA and ssRNA viruses bind non-specifically ssRNAs, leading to models in which ribonucleoprotein complexes (RNPs) move from cell to cell. Thus, it will be of special interest to determine whether MPs of dsRNA viruses interact with genomic dsRNAs or their derivative sRNAs. To this end, we studied the biochemical functions of MP Pns6 of Rice dwarf phytoreovirus (RDV), a member of Phytoreovirus that contains a 12-segmented dsRNA genome. We report here that Pns6 binds both dsRNAs and ssRNAs. Intriguingly, Pns6 exhibits non-sequence specificity for dsRNA but shows preference for ssRNA sequences derived from the conserved genomic 5′- and 3′- terminal consensus sequences of RDV. Furthermore, Pns6 exhibits magnesium-dependent ATPase activities. Mutagenesis identified the RNA binding and ATPase activity sites of Pns6 at the N- and C-termini, respectively. Our results uncovered the novel property of a viral MP in differentially recognizing dsRNA and ssRNA and establish a biochemical basis to enable further studies on the mechanisms of dsRNA viral MP functions
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