13,417 research outputs found
Preparation and characterization of silicon free bioactive glass by queching
Synthesis of bioactive glass that is a silicon free bioactive borate glass is achieved by the traditional method means by melt-casting. The glass was prepared by taking (40.9%) CaO-(34.9%) B2O3-(24.2%)BaO (BBCO) then by quick air quenching from 1250C to room temperature. XRD, DTA, and TGA studies are made to characterize the glass. Hydroxyapatite (HAp) or Ca10(PO4)6(HO)2 formation on the glass surface was tested by soaking the glass in K2HPO4 (0.25M with pH = 8.5) at 370C. Nanorods or bubbles of HAP are formed on the glass surface by soaking the glass for longer time. Fourier transform infrared spectroscopy (FTIR), scanning and election and high resolution transmission electron microscopic studies confirmed HAP formation
The Revival of Sree Sankara’s Hypothesis of Appearance and Reality: A Critical Analysis and Appraisal
The main foci of this paper are to delineate the distinction between appearance and reality in the light of Sree Sankara’s Advaita Philosophy and to look at how Sankara’s notion of appearance and reality is enjoying a contemporary revival, and it is important to try to develop an understanding of why this is so. The central theme of the notion of Sankara philosophy is that Brahman or the absolute spirit is the only reality and everything else is an illusory appearance of Brahman. The major essence of Sankara’s Philosophy can be expressed in the form of a half verse, ‘Brahma Satyam Jagat Mitya Jivo Brahmaiva Na apara' which means ‘Brahman is real the world is unreal and the so-called jiva nondifferent from Brahman'. In the current consciousness study, Sree Sankara’s notion of Brahman and Jagat is so conundrum in the material life of postmodern people. But it is inevitable to believe that Sree Sankara’s philosophy is not a conundrum for common people in contemporary society but the very conundrum for the non-common people
Higher accuracy protein Multiple Sequence Alignment by Stochastic Algorithm
Multiple Sequence Alignment gives insight into evolutionary, structural and functional relationships among the proteins. Here, a novel Protein Alignment by Stochastic Algorithm (PASA) is developed. Evolutionary operators of a genetic algorithm, namely, mutation and selection are utilized in combining the output of two most important sequence alignment programs and then developing an optimized new algorithm. Efficiency of protein alignments is evaluated in terms of Total Column score which is equal to the number of correctly aligned columns between a test alignment and the reference alignment divided by the total number of columns in the reference alignment. The PASA optimizer achieves, on an average, significant better alignment over the well known individual bioinformatics tools. This PASA is statistically the most accurate protein alignment method today. It can have potential applications in drug discovery processes in the biotechnology industry
Enhancement of superconducting correlation due to interlayer tunneling.
Interlayer single particle tunneling between the layers suppress the
in-plane short range magnetic order (which is modeled as spin density wave
(SDW) insulator). Doping over the SDW state kills perfect nesting of the Fermi
surface (FS) in certain directions and hence SDW gap reduces to zero in those
directions of the FS. Coupling between the planes through interlayer tunneling
() further suppresses the in-plane magnetic SDW-gap and hence
becomes anisotropic. Superconductivity arises in the gapless regions of the FS
under the `modified spin bag' mechanism. We show that the highest can
only be obtained for non-zero based on this mechanism.Comment: 17 pages, latex, 3 figures available on request
An effective Nuclear Model: from Nuclear Matter to Finite Nuclei
The momentum and density dependence of mean fields in symmetric and
asymmetric nuclear matter are analysed using the simple density dependent
finite range effective interaction containing a single Gaussian term alongwith
the zero-range terms. Within the formalism developed, it is possible to
reproduce the various diverging predictions on the momentum and density
dependence of isovector part of the mean field in asymmetric matter. The finite
nucleus calculation is formulated for the simple Gaussian interaction in the
framework of quasilocal density functional theory. The prediction of energies
and charge radii of the interaction for the spherical nuclei compares well with
the results of other effective theories.Comment: 10 pages, 3 figures, 2 tables, To appear in the Proceedings of the
11th International Conference on Nucleus-Nucleus Collisions (NN2012), May
27-June 1, 2012, San Antonio, Texas, US
Echocardiographic assessment of left ventricular hypertrophy in patients of chronic kidney disease
Background: Present study was conducted with an objective to study the prevalence of left ventricular hyper trophy (LVH) by echocardiography in patients with chronic kidney disease (CKD) and to find out correlation of left ventricular hypertrophy with severity of chronic kidney disease.Methods: From November 2012 to September 2014, 100 chronic kidney disease patients who were admitted in hospital or attended on OPD basis for dialysis were taken for study. Detailed history, clinical evaluation, laboratory investigations and echocardiography was carried out. The diagnosis of CKD was made on basis of serum creatinine more than 1.5 mg/dl which remained constantly for more than 3 months. Patients with mild, moderate and severe CKD were having serum creatinine level 1.5-3mg/dl, 3-6mg/dl and > 6mg/dl respectively. Glomerular filtration rate (GFR) was calculated by modification of diet in renal disease (MDRD) equation. Cut-off for CKD was taken to be <60ml/min / 1.73m2 as per existing guidelines.Results: Out of 100 patients studied, 67 were males and 33 were females. All patients were selected randomly. Majority of the patients were in the age group of 61 -70 years (41%). In the present study, it was found that left ventricular mass index (LVMI) which reflects LVH showed a progressive rise in severity of renal failure with 17 % of mild category of CKD having LVH as compared to 26% of moderate category and 57% of severe category of CKD.Conclusions: Patients with CKD have LVH, which is more marked in patients with severe CKD. So, these patients should have a thorough cardiovascular evaluation even if there were no symptoms, and efforts should be made to prevent LVH, during the early course of renal insufficiency, such as strict control of hypertension, anaemia
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