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On Certain Unified Integrals Involving General Class of Polynomials and the Multivariable H-function
Mridula Garg,Shweta Mittal 경북대학교 자연과학대학 수학과 2004 Kyungpook mathematical journal Vol.44 No.4
In the present paper we evaluate two infinite integrals involving the product of two general classes of polynomials and the multivariable H -function with general arguments. These integrals are unified in nature and we can derive from them a large number of integrals involving simpler functions and polynomials as their particular cases. It maybe pointed out here that in the present paper we have also corrected an integral recorded erroneously in the well known book by Gradshteyn I. S. and Ryzhik I. M. [1, p.346, eq.3.257] .
The Distribution of the Products of Powers of Generalized Dirichlet Components
Mridula Garg,Vimal Katta,Mahesh Kumar Gupta 경북대학교 자연과학대학 수학과 2002 Kyungpook mathematical journal Vol.42 No.2
In the present paper we establish a generalized Dirichlet distribution and obtain the distirbution of the products of powers of components of the generalized Dirichlet variable. Our findings unify and extend the results given earlier by Rogers and young[3], Rogers[2],Johnson and Kotz[7] and several others.
A Study of Multidimensional Fractional Integral Operators and Generalized Stieltjes Transform
Mridula Garg ...et al KYUNGPOOK UNIVERSITY 2000 Kyungpook mathematical journal Vol.40 No.1
In this paper, we study multidimensional fractional integral operators whose kernels involve the product of generalized polynomial sets and the multivariable H ㅡ function. First, we obtain the images of generalized Stieltjes transform of fractional integral operators and conversely, the fractional integrals of generalized Stieltjes transform. Finally, we mention the multidimensional Mellin transform of these operators and establish the corresponding inversion formulas. The fractional integral operators studied by us are quite general in nature and thus the results obtained here provide useful extensions and unifications of a number of (known or new) results for simpler families of fractional integral operators.
Growth Performance, Carcass Traits and Meat Quality in Broilers, Fed Flaxseed Meal
Mridula, D.,Kaur, Daljeet,Nagra, S.S.,Barnwal, P.,Gurumayum, Sushma,Singh, K.K. Asian Australasian Association of Animal Productio 2011 Animal Bioscience Vol.24 No.12
The effect of flaxseed meal on broiler performance, carcass characteristics, alpha-linolenic acid contents, and organoleptic characteristics of chicken meat was studied during a 42 day experiment. Broiler chicks were randomly allotted to 4 experimental groups and fed iso-energetic and iso-nitrogenous diets containing flaxseed meal at 0, 5, 10 and 15%. Flaxseed meal did not affect the weekly body weight of broiler chicks during the first two weeks but thereafter weekly body weight reduced among flaxseed meal groups. At the end of $6^{th}$ week, birds fed on 15% flaxseed meal showed a reduction of 8% in body weight compared to the control group. Control group had significantly higher weight gain with slightly higher feed consumption and better feed conversion ratio (FCR), protein efficiency ratio (PER), and energy efficiency ratio (EER) than the flaxseed meal groups. Among the treatments, birds of 5 and 10% flaxseed meal groups had significantly better FCR, PER and EER compared to those of the 15% flaxseed meal group. The carcass characteristics data indicated a significant reduction in the eviscerated weight and breast yield at 15% flaxseed meal in the diet as compared to other dietary groups. However, the alpha-linolenic acid content in both breast and thigh meat was higher with an increasing level of flaxseed meal in the diets without affecting the sensory acceptability of meat. Based on the present study, up to 10% of flaxseed meal may be used in broiler diet to enhance the alpha-linolenic acid content in the broiler meat.
Do N-heterocyclic aromatic rings prefer π-stacking?
Guin, Mridula,Patwari, G. Naresh,Karthikeyan, S.,Kim, Kwang S. The Royal Society of Chemistry 2011 Physical chemistry chemical physics Vol.13 No.13
<P>The IR-UV double resonance spectroscopy of phenylacetylene complexes with triazine, pyrazine and pyridine in the acetylene C–H group of phenylacetylene was investigated. These spectra indicate that in the complexes of triazine, pyrazine and pyridine the acetylenic group is minimally perturbed and the predominant interaction is with the π electron density of the phenyl ring of phenylacetylene. Geometries of the complexes optimized at M06-2X/aug-cc-pVDZ and MP2/aug-cc-pVDZ levels, combined with highly accurate energy calculations at the complete basis set (CBS) limit of CCSD(T), indicate the formation of π-stacked complexes in all the three cases. Additionally, a C–H⋯N hydrogen-bonded complex between pyridine and phenylacetylene was also observed. The present results indicate that N-heterocyclic aromatic rings favor formation of π-stacked complexes.</P> <P>Graphic Abstract</P><P>The infrared spectra in the acetylenic C–H stretching region reveal that triazine, pyrazine and pyridine form π-stacked hetero-dimers with phenylacetylene. Additionally, pyridine also forms a C–H⋯N hydrogen-bonded complex as well. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0cp02015j'> </P>
Rukmini Mridula Kandadai,Praveen Yada,Megha S. Uppin,Shaik Afshan Jabeen,Ajith Cherian,Meena Angamuthu Kanikannan,Rupam Borgohain,Sundaram Challa 대한신경과학회 2014 Journal of Clinical Neurology Vol.10 No.4
Background Subacute sclerosing panencephalitis (SSPE) is a delayed and fatal manifestationof measles infection. Fulminant SSPE is a rare presentation in which the disease progresses todeath over a period of 6 months. The clinical features are atypical and can be misleading. Case Report We report herein a teenage boy who presented with acute-onset gait ataxia followed by right hemiparesis that evolved over 1 month, with left-hemispheric, delta-range slowing on the electroencephalogram (EEG). Magnetic resonance imaging disclosed multiple whitematter hyperintensities, suggesting a diagnosis of acute disseminated encephalomyelitis. Hereceived intravenous steroids, and within 4 days of hospital admission he developed unilateralslow myoclonic jerks. Repeat EEG revealed Rademecker complexes, pathognomonic of SSPE,and an elevated titer of IgG antimeasles antibodies was detected in his cerebrospinal fluid. Thedisease progressed rapidly and the patient succumbed within 15 days of hospitalization. The diagnosis of SSPE was confirmed by autopsy. Conclusions This case illustrates the difficulty of recognizing fulminant SSPE when it manifests with asymmetric clinical and EEG abnormalities.
Guin, Mridula,Patwari, G. Naresh,Karthikeyan, S.,Kim, Kwang S. Royal Society of Chemistry 2009 Physical chemistry chemical physics Vol.11 No.47
<P>The IR-UV double resonance spectroscopy of a complex between phenylacetylene and 1,3,5-triazine reveals that the acetylene C–H group of phenylacetylene is minimally perturbed due to its interaction with 1,3,5-triazine. Further, the IR spectrum clearly indicates that 1,3,5-triazine primarily interacts with π-electron density of the benzene ring in phenylacetylene. Geometries obtained at the DFT/MO6-2X and MP2/aug-cc-pVDZ levels, combined with highly accurate energy calculations at the complete basis set (CBS) limit of CCSD(T), establish formation of the displaced π-stacked heterodimer between phenylacetylene and 1,3,5-triazine.</P> <P>Graphic Abstract</P><P>The infrared spectrum in the acetylenic C–H stretching region, in combination with high-level <I>ab initio</I> calculations, reveals the formation of a π-stacked complex between phenylacetylene and 1,3,5-triazine. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b911640k'> </P>
On Distribution of Order Statistics from Kumaraswamy Distribution
Garg, Mridula Department of Mathematics 2008 Kyungpook mathematical journal Vol.48 No.3
In the present paper we derive the distribution of single order statistics, joint distribution of two order statistics and the distribution of product and quotient of two order statistics when the independent random variables are from continuous Kumaraswamy distribution. In particular the distribution of product and quotient of extreme order statistics and consecutive order statistics have also been obtained. The method used is based on Mellin transform and its inverse.
Thermal Evolution of BaO-CuO Flux as Sintering Aid for Proton Conducting Ceramic Fuel Cells
Biswas, Mridula,Hong, Jongsup,Kim, Hyoungchul,Son, Ji-Won,Lee, Jong-Ho,Kim, Byung-Kook,Lee, Hae-Weon,Yoon, Kyung Joong The Korean Ceramic Society 2016 한국세라믹학회지 Vol.53 No.5
The eutectic melt of BaO-CuO flux is known to be a potential sintering aid for $Ba(Zr,Y)O_3$ (BZY) electrolyte for proton-conducting ceramic fuel cells (PCFCs). A density of BZY higher than 97% of theoretical density can be achieved via sintering at $1300^{\circ}C$ for 2 h using a flux composed of 28 mol% BaO and 72 mol% CuO. In the present study, chemical and structural evolution of BaO-CuO flux throughout the sintering process was investigated. An intermediate holding step at $1100^{\circ}C$ leads to formation of various impurity compounds such as $BaCuO_{1.977}$, $Ba_{0.92}Cu_{1.06}O_{2.28}$ and $Cu_{16}O_{14.15}$, which exhibit significantly larger unit cell volumes than the matrix. The presence of such secondary compounds with large lattice mismatch can potentially lead to mechanical failure. On the other hand, direct heating to the final sintering temperature produced CuO and $Cu_2O$ as secondary phases, whose unit cell volumes are close to that of the matrix. Therefore, the final composition of the flux is strongly affected by the thermal history, and a proper sintering schedule should be used to obtain the desired properties of the final product.