Ectopic thoracic kidney in a child presenting with recurrent cough: a case report and review of literature

Ectopic thoracic kidney is a rare clinical entity in pediatric patients. It is usually an incidental finding on evaluation of patients with recurrent cough or mediastinal mass. Its clinical course is benign. We are presenting a case of right ectopic intrathoracic kidney diagnosed incidentally on contrast-enhanced computed tomography chest during evaluation of a child with recurrent cough.Keywords: mediastinal mass, recurrent cough, thoracic kidne

A Flexible Crypto-system Based upon the REDEFINE Polymorphic ASIC Architecture

The highest levels of security can be achieved through the use of more than one type of cryptographic algorithm for each security function. In this paper, the REDEFINE polymorphic architecture is presented as an architecture framework that can optimally support a varied set of crypto algorithms without losing high performance. The presented solution is capable of accelerating the advanced encryption standard (AES) and elliptic curve cryptography (ECC) cryptographic protocols, while still supporting different flavors of these algorithms as well as different underlying finite field sizes. The compelling feature of this cryptosystem is the ability to provide acceleration support for new field sizes as well as new (possibly proprietary) cryptographic algorithms decided upon after the cryptosystem is deployed.Defence Science Journal, 2012, 62(1), pp.25-31, DOI:http://dx.doi.org/10.14429/dsj.62.143

Application of Probablistic Neural Network for the Development of Wear Mechanism Map for Glass Fiber Reinforced Plastics

ABSTRACT: Glass fiber reinforced plastic composite materials are finding increased applications due to their excellent properties. Fiber reinforced plastic (FRP) composite materials comprise soft matrix and fiber elements. This article presents the tribological aspects of glass fiber reinforced plastic composites. The wear test is carried out for FRP in a pin-on-roller wear tester. The wear rate obtained from different sliding speeds and normal pressure are plotted as a contour map. The scanning electron microscopy images are taken to study the deformations that occurred in the wear zone. The regions of different wear mechanisms are identified using scanning electron microscopy. The regions of wear mechanisms are classified using probabilistic neural networks and superimposed over wear rate contours. The wear mechanisms observed using scanning electron microscopy, along with wear rate data, are used for the construction of wear mechanism maps

Effect of bhrāmarī Prāṇāyāma practice on pulmonary function in healthy adolescents: A randomized control study

Context: Prāṇāyāma, the fourth limb of ancient aṣṭāṅga yoga consists of breathing techniques which produce various physiological and psychological effects. Though various types of prāṇāyāma and their effects have been scientifically established, Bhrāmarī prāṇāyāma (Bhr.P) is the one whose effects still remain understated. Aims: The present study was conducted to find the effects of Bhrāmarī prāṇāyāma practice on pulmonary function in healthy adolescents. Study Design: Randomized control trial. Subjects and Methods: 90 healthy adolescents including 32 females and 58 males participated in the study. They were randomly divided into Bhr.P group (n = 45) and Control group (n = 45) by a simple lottery method. Pulmonary function test was done at baseline and at end of 12th week using RMS Helios spirometry. Prāṇāyāma group students were trained to do Bhr.P as 3 to 4 breaths/min for 5 min followed by 2 min rest. This was one cycle and in this way, they were instructed to do five cycles each time for 45 minutes five days in a week. Control group students were not allowed to practice any kind of exercise throughout the study period. Statistical Analysis: Student paired and unpaired T tests were used to analyse the intra group and intergroup differences using R statistical software. Results: A significant (P < 0.05) improvement in all pulmonary function parameters; FVC, FEV1, FEV1/FVC ratio, FEF 25%-75% and PEFR was seen in the Bhr.P group than the control group adolescents. Slow vital capacity (SVC) and Maximum Voluntary Volume (MVV) also showed significant improvement in the prāṇāyāma group. Conclusions: Bhrāmarī Prāṇāyāma practice is effective in improving the pulmonary function among the adolescents which could be utilized for further clinical studies

Certain quotient of eta-function identities.

On page 212 in his lost notebook, Ramanujan defined a parameter $\lambda_n$ by a certain quotient of Dedekind eta-functions at the argument $q=exp(-\pi \sqrt{n/3})$. He then recorded a table of several values of $\lambda_n:=\lambda_{n,\,\, 3}$. All these have been established by B. C. Berndt, H. H. Chan, S.-Y. Kang and L.-C. Zhang \cite{BCB4}. In this paper following Ramanujan we defined a parameter $\lambda_{n, p}$ at the argument $q=exp(-\pi \sqrt{n/p})$. We establish several interesting and new explicit evaluations for $\lambda_{n,\,\, p}$ using Ramanujan-Weber class invariant, modular equations and mixed-modular equations

Spray pyrolysed In2S3 thin films: A potential electron selective layer for large area inverted bulk-heterojunction polymer solar cells

In this paper, we report the results of investigations on the potential of spray pyrolysis technique in depositing electron selective layer over larger area for the fabrication of inverted bulk-heterojunction polymer solar cells. The electron selective layer (In2S3) was deposited using spray pyrolysis technique and the linear heterojunction device thus fabricated exhibited good uniformity in photovoltaic properties throughout the area of the device. An MEH-PPV:PCBM inverted bulk-heterojunction device with In2S3 electron selective layer (active area of 3.25 3.25 cm2) was also fabricated and tested under indoor and outdoor conditions. Fromthe indoor measurements employing a tungsten halogen lamp (50mW/cm2 illumination), an opencircuit voltage of 0.41V and a short-circuit current of 5.6mA were obtained. On the other hand, the outdoor measurements under direct sunlight (74mW/cm2) yielded an open-circuit voltage of 0.46V and a short-circuit current of 9.37mACochin University of Science and TechnologyPhys. Status Solidi A 209, No. 1, 199–203 (2012