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Search Results: 1 - 10 of 146252 matches for " Joshi B. "
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Well Behaved Class of Charge Analogue of Durgapal’s Relativistic Exact Solution  [PDF]
Pratibha Fuloria, B. C. Tewari, B. C. Joshi
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.210143
Abstract: We obtain a new class of charged super-dense star models after prescribing particular Forms of the metric potential and electric intensity. The metric describing the superdense stars joins smoothly with the Reissner-Nordstrom metric at the pressure free boundary. The interior of the stars possess their energy density, pressure, pressure density ratio and velocity of sound to be monotonically decreasing towards the pressure free interface. In view of the surface density ρb=2×1014g/cm3, the heaviest star occupies a mass 5.523 Mwith its radius 13.98 km. In absence of the charge we are left behind with the regular and well behaved fifth model of Durgapal [1].
A Unified Presentation of Certain Subclass of Analytic Functions with Negative Coefficients
S.B. Joshi
Matematika , 2007,
Abstract: The main objective of this paper is to introduce and investigate various properties and characteristics of a unified class of analytic functions with negative coefficient in the unit disc. The results presented here involve distortion inequalities and growth and distortion theorem involving fractional integrals and fractional derivatives.
Estimation of Gestational Age According to Crown-Rump Length in Nepalese Population: A Comparison with Previously Published Nomograms
B. Raj Joshi
Iranian Journal of Radiology , 2009,
Abstract: Background/Objective: This study was performed to construct an institution specific crown-rump length (CRL) nomogram and to compare its ability to predict gestational age with previously published nomograms. "nPatients and Methods: A regression model was developed for estimation of gestational age using CRL measurements of 123 singleton fetuses in the Nepalese population. Measurements were obtained by placing the calipers of the ultrasound machine from the crown to the rump. The appropriateness of previously established CRL nomograms for predicting the gestational age was assessed in the Nepalese population to determine comparability between nomograms. "nResults: CRL corresponds to Robinson's nomogram up to 9 weeks of gestational age. There is a deficiency of 2mm at 10 weeks, 5 mm at 11 weeks and 8 mm at 12 weeks. "nConclusion: CRL measurements are used as a reliable method for estimation of the gestational age as well as a baseline for comparing gestational ages later. CRL corresponds to Robinson's nomogram up to 9 weeks gestational age. There is a deficiency of 2-8 mm from 10-12 weeks gestational age. Difference with the established nomograms may be due to ethnic differences of the fetal development. After 12 weeks, CRL measurement is unreliable due to flexion of the fetus.
Sonographic variations in common bile duct dimensions
B. Raj Joshi
Journal of Institute of Medicine , 2009, DOI: 10.3126/joim.v31i3.2993
Abstract: Introduction: Biliary diseases such as cholelithiasis, cholecystitis, hepatitis, cirrhosis and pancreatitis are common in Nepal. Cholelithiasis was present in 8 percent of the emergency patients, second to acute appendicitis. Acute cholecysistitis was present in 25 percent of these patients. 1 The most common operation in a district hospital was cholecystectomy (31%]). 2 Ultrasound plays an integral part in evaluation of biliary system. The aim of the study was also to determine whether the size of the CBD increases with age. Methods: We prospectively collected data on 100 patients aged 15 years or older who underwent abdominal sonography. The subjects had no history of biliary and pancreatic disease or operation. The CBD was measured in porta hepatis, in the distal aspect of head of pancreas and midway between these points. Linear regression was used to correlate age with the dimension. Results: There were 30 males and 70 females in the study. The subjects ranged from 15 to 80 years. The mean diameters were as follows: 3.76mm in proximal, 4.26 mm in middle, 4.90mm in distal portion of CBD. The overall measurement was 4.23mm. Conclusions: There was a significant correlation between CBD size and age. Correlation with age was best observed for the distal segment. Keywords : Biliary diseases, CBD, ultrasound. DOI: 10.3126/joim.v31i3.2993 Journal of Institute of Medicine, December, 2009; 31(3) 27-29
Some Novel Applications of Explanation-Based Learning to Parsing Lexicalized Tree-Adjoining Grammars
B. Srinivas,Aravind Joshi
Computer Science , 1995,
Abstract: In this paper we present some novel applications of Explanation-Based Learning (EBL) technique to parsing Lexicalized Tree-Adjoining grammars. The novel aspects are (a) immediate generalization of parses in the training set, (b) generalization over recursive structures and (c) representation of generalized parses as Finite State Transducers. A highly impoverished parser called a ``stapler'' has also been introduced. We present experimental results using EBL for different corpora and architectures to show the effectiveness of our approach.
Automatic detection of pulse morphology patterns & cardiac risks  [PDF]
Rajani R. Joshi, Ganesh B. Nawsupe, Smita P. Wangikar
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.56041
Abstract: Analysis of arterial pulse waveforms is important for non-invasive diagnosis of cardiovascular functions. Large samples of IPG signal records of radial arterial pulse show presence of eight different types of shapes (morphological patterns) in the pulse waveforms. In this paper we present an efficient computational method for automatic identification of these morphological patterns. Our algorithm uses likelihood ratio of cumulative periodogram of pulse signals and some geometrical criteria. The algorithm is presented with necessary details on signal processing aspects. Results for a large sample of pulse records of adult Indian subjects show high accuracy of our algorithm in detecting pulse-morphology patterns. Variation of pulse-morphology with respect to time is also analyzed using this algorithm. We have identified some characteristic features of pulse-morphology variation in patients of certain cardiac problems, hypertension, and diabetes. These are found relevant and significant in terms of physiological interpretation of the associated shapes of pulse waveforms. Importance of these findings is highlighted along with discussion on overall scope of our study in automatic analysis of heart rate variability and in other applications for non-invasive prognosis/diagnosis.
Knockout of 5-Lipoxygenase Results in Age-Dependent Anxiety-Like Behavior in Female Mice
Yash B. Joshi, Domenico Praticò
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0029448
Abstract: Background The enzyme 5-lipoxygenase (5LO) has been implicated in a variety of neurological and psychiatric disorders including anxiety. Knockout of 5LO has previously been shown to alter anxiety-like behavior in mice at a young age but the effect of 5LO knockout on older animals has not been characterized. Methodology/Principal Findings Here we used the elevated plus maze behavioral paradigm to measure anxiety-like behavior in female mice lacking 5LO (5LO-KO) at three different ages. Adolescent 5LO-KO animals did not significantly differ from wild-type (WT) animals in anxiety-like behavior. However, adult and older mice exhibited increased anxiety-like behavior compared to WT controls. Conclusions These results indicate that 5LO plays a role in the development of the anxiety-like phenotype in an age-dependent manner in female mice. Future work should further investigate this interaction as 5LO may prove to be an important molecular target for the development of novel anxiolytic therapies.
Hepatoprotective and antioxidant effect of Carissa spinarum root extract against CCl4 and paracetamol-induced hepatic damage in rats
Karunakar Hegde, Arun B. Joshi
Bangladesh Journal of Pharmacology , 2010,
Abstract: Ethanolic extract of the roots of C. spinarum was evaluated for hepato-protective and antioxidant activities in rats. Oral pre-treatment with ethanolic extract (100, 200 and 400 mg/kg) showed significant hepatoprotective activity against CCl4 and paracetamol-induced hepatotoxicity by decreasing the activities of bilirubin and lipid peroxidation, and significant increase in the levels of uric acid, glutathione, super oxide dismutase, catalase and protein in a dose dependent manner, which was confirmed by the decrease in liver wet weight and histopathological examination. The extract possessed strong antioxidant activity. This suggests that the hepatoprotective activity of C. spinarum is possibly attributed to its free radical scavenging properties.
Competing Drifting Radio Subpulses in PSR B0031-07
M. Vivekanand,B. C. Joshi
Physics , 1998, DOI: 10.1086/307013
Abstract: The pair of drifting subpulses of the radio pulsar PSR B0031-07 appear to be well separated from each other on the average, overlapping at less than one thirtieth of the peak energy. Strictly, the integrated profile of the pair (after removing the drift) does not show more than two subpulses; however this result is likely to be modified with the availability of more data. On the other hand, rare instances of three simultaneous subpulses in a single period have been noticed. This is consistent with the Ruderman and Sutherland model of the drifting phenomenon in which several sparks, uniformly spaced on a circle, rotate around the polar cap. The third subpulse appears to show up strongly when subpulses belonging to the primary drift bands weaken. Although this conclusion is based mainly on two reliable examples, it suggests an anti correlation of the subpulse energies. The normalised correlation coefficient between the energies of the two subpulses in a period is -0.16 +- 0.02, after accounting for a known selection effect. Simulations suggest that this result could not be an artefact. This suggests the idea of competing drifting subpulses which, if true, will have important ramifications for the growth and breakdown of the particle acceleration zones in pulsars.
Vector bundles with Theta divisors I: Bundles on Castelnuovo curves
Kirti Joshi,V. B. Mehta
Mathematics , 2007,
Abstract: In this paper we show that semistable vector bundles on a Castelnuovo curve of genus g >= 2 have theta divisors. As a corollary, we deduce that semistable vector bundles on a smooth, general curve of genus g >= 2 which extend to semistable vector bundles on any Castelnuovo degeneration of the general curve admit a theta divisor.
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