Kumar T.,Jaypee Institute of Information Technology |
Kalyanasundaram N.,Jaypee Institute of Information Technology |
Lande B.K.,Swami Rama Himalayan University
Waves in Random and Complex Media | Year: 2015
A boundary value type solution of the generalized case of scattering from an array consisting of a finite number of axially magnetized ferromagnetic circular cylinders is presented in this paper. Proposed analysis is carried out by matching the tangential fields at the surface of each cylinder to find the unknown expansion coefficients of the scattered field. A planar array having size 2 x 3 and a linear array having size 1 x 6 consist of ferromagnetic microwires are considered to obtain the numerical results for T Mz and T Ez polarizations in terms of the variation in scattered field components of the near field and scattering cross section with respect to the angle of incidence, radius of microwires, spacing among the microwires, number of microwires in the array, and operating frequency. For validation, theoretical results of the method already available in the literature are simulated for a linear 1 x 6 array and compared to match with the numerical results of proposed analysis for the same array. In order to prove the generalization of the solution in terms of the number of microwires, simulated results specialized to the case of single ferromagnetic microwire are shown to be matched with the results available in the literature for the special case. © 2015 Taylor & Francis.
Shrivastava A.,Swami Rama Himalayan University |
Saxena Y.,Swami Rama Himalayan University
Indian Journal of Physiology and Pharmacology | Year: 2014
Exposure to extremely low frequency (ELF) electromagnetic radiations from mobile phones may affect the circadian rhythm of melatonin in mobile users. The study was designed with objective to evaluate the influence of mobile phone on circadian rhythm of melatonin and to find the association if any between the hours of mobile usage with serum melatonin levels. All the volunteers medical students using mobiles for > 2 hrs/day were included in high users group and volunteers who used mobile for ≤ 2 hrs where included in low users group. Both high and low users volunteers were sampled three times in the same day (Morning- 3-4 am, Noon 1-2 pm, Evening-5-6 pm) for estimation of serum melatonin levels. Comparsion of sernum melatonin levels in high users and low users were done by Mann Whitney “U” Test. Reduced morning melatonin levels (3-4 am) was observed in high users (> 2 hrs/day) i.e high users had a disturbed melatonin circadian rhythm.There was a negative correlation between melatonin secretion and hours of mobile usages. © 2014, Association of Physiologists and Pharmacologists of India. All rights reserved.
Ahmad S.,Swami Rama Himalayan University |
Mittal M.,Swami Rama Himalayan University
Journal International Medical Sciences Academy | Year: 2015
Diabetic peripheral neuropathy is a well-known microvascular complication of type 2 diabetes mellitus attributed to chronic hyperglycemia. Tingling paraethesias, pain and hyperesthesias in the feet occur in newly diagnosed or poorly Table controlled 1: Severity diabetics of Diabetic and the Polyneuropathy symptoms resolve with proper glycemic control. The present article focuses on classification of diabetic neuropathy and its management. © 2015, International Medical Sciences Academy. All rights reserved.
Dhingra V.K.,Swami Rama Himalayan University |
Saini S.,Cancer Research Institute |
Basu S.,Bhabha Atomic Research Center
Hellenic Journal of Nuclear Medicine | Year: 2015
Objective: We describe and discuss the various medical, social and financial aspects of setting up, and optimizing, working conditions of a tertiary Nuclear Medicine Department. This department was established in a North Indian state which comprises 93% of hilly area. During the first three years after establishment we have developed infrastructure, cooperation with other departments, improved radiation safety and cost effectiveness of our work and designed future perspectives. The facility was established in a cancer center of a tertiary care hospital where a medical college infrastructure was developed. National guidelines formulated by the Atomic Energy Regulatory Board (AERB) were followed. Our department served a population area of 10.08 million inhabitants. Over the first three years 2,400 patients underwent diagnostic scans and 106 patients underwent low dose radioiodine treatment for thyrotoxicosis. To optimize resources and at the same time, enhance their effectivity, we procured our 99Mo/99mTc generator every other week and arranged our daily programme accordingly. Fractionation of cold kits allowed us to perform low cost in-vivo procedures on a daily basis and to save the department's running costs by 30%-50%. We run continuing education nuclear medicine programmes for referring physicians, medical students and paramedical workers which were included in routine practice which led to a consistent growth in patients referral. The need for a positron emission tomography/computed tomography (PET/CT) scan and high dose treatment department for thyroid cancer was strongly felt. Conclusion: Our nuclear medicine department in a peripheral region of a developing country applied better logistics by procuring new generator every fortnight, fractionating the cold kits and by organizing complete teaching programmes.
Dhasmana R.,Swami Rama Himalayan University |
Sah S.,Eye-Q |
Gupta N.,Swami Rama Himalayan University
Journal of Clinical and Diagnostic Research | Year: 2016
Introduction: Diabetic retina undergoes degenerative changes in retinal nerve fiber layer (RNFL) in addition to vascular changes. Loss of RNFL with changes in inner retina and their association with metabolic control have been studied with varied results in diabetic patients. Aim: To compare the RNFL thickness between diabetic patients and age matched healthy controls and to correlate the thickness to metabolic control. Materials and Methods: One hundred and sixty five patients were enrolled in the study out of which 50 served as controls, 58 patients were diabetic without retinopathy and 57 patients had diabetic retinopathy. Both eyes of all patients underwent optical coherence tomography scans for RNFL and ganglion cell complex. Foveal and parafoveal thickness were also measured. All the parameters were compared to patient’s metabolic control. Results: RNFL thinning was observed in superotemporal (p-value = 0.001) and upper nasal sectors (p-value = 0.031) around the optic disc in eyes with diabetic retinopathy. Ganglion cell complex also showed statistically significant thinning in diabetic patients. Creatinine levels showed a weak negative correlation to the RNFL.Conclusion: This study positively concluded that neurodegeneration in an early component of diabetic retinopathy. © 2016, Journal of Clinical and Diagnostic Research. All rights reserved.