Rajasthan, India
Rajasthan, India

Mewar University is an autonomous body set up by the Government of Rajasthan through Act. No. 4 of 2009, passed by the Rajasthan Assembly . The University is further approved by the UGC under us 22 of the UGC Act vide letter No.F.9-15/2009 dt. 30 March 2009. Mewar University is promoted by the Mewar Education Society , headed by Dr. Ashok Kumar Gadiya. It is controlled by a Board of Management, constituted by the MES. Wikipedia.

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Joshi H.,Mewar University | Pensia R.K.,S J Government Girls College
Physics of Plasmas | Year: 2017

The influence of rotation on the Jeans instability of homogeneous magnetized radiative quantum plasma is investigated. The basic equations of the problem are constructed and linearized by using the Quantum Magnetohydrodynamics (QMHD) model. The general dispersion relation is obtained by using the normal mode analysis technique, which is reduced for both the transverse and the longitudinal mode of propagations and further it is reduced for the axis of rotation parallel and perpendicular to the magnetic field. We found that the stabilizing effects of rotation are decreases for a strong magnetic field which is shown in the graphical representation. We also found that the quantum correction modified the condition of Jeans instability in both modes of propagation. The stabilizing effect of rotation is more increased in the presence of quantum correction. © 2017 Author(s).

Choudri R.V.,Mewar University | Soni S.C.,Mewar University | Mathur A.N.,Shrinathji Institute of Technology and Engineering
Materials Today: Proceedings | Year: 2017

To identify the mechanical property of a component is extremely significant, before it is used as an application to avoid any failure. Composite structure in practice can be subjected to various types of loads. One of the prime loads among such is tensile load. This paper shows experimental study and results of the rectangular dog bone tensile specimen of Boron (SAE-1042)-Epoxy/Aluminum (6061-t6) (B/Ep/Al) laminated metal composite (LMC). LMCs are a sole form of composite material in which alternating metal or metal containing layers are bonded together withs separate interfaces. Boron metal is among the hardest materials from the earth's crest coupled with the aluminium metal, it is known that one side of boron and aluminum plates are properly knurled and later adhesively bonded with an epoxy which acts as binder and consolidated by using heavy upsetting press. Processes of tensile tests have been conducted with a hydraulic machine where three specimens with identical geometry were tested which all of them showing similar stress-strain curves. These results of tensile tests were clearly indicated the nature of ductility. © 2017 Elsevier Ltd. All rights reserved.

Dahiya R.,University of the West Indies | Singh S.,Mewar University
Acta Poloniae Pharmaceutica - Drug Research | Year: 2017

Synthesis of a proline-rich cyclic hexapeptide - diandrine A [VI] was accomplished by coupling of tetrapeptide unit Boc-Gly-Pro-Trp-Pro-OH with dipeptide unit Tyr-Phe-OMe followed by cyclization of linear peptide unit [V] under alkaline condition. Structure of newly synthesized cyclopolypeptide was elucidated by means of spectral techniques including FTIR, 1H NMR, 13C NMR, MS analyses. VI was subjected to pharmacological screening and found to exhibit good antifungal activity against dermatophytes. Further, VI possessed potent antihelmintic activity against earthworms M. konkanensis, P. corethruses and Eudrilus sp.

Shukla A.K.,Mewar University
2016 International Conference on Systems in Medicine and Biology, ICSMB 2016 | Year: 2017

This research paper introduces a low cost technique to control an assistive wheel chair for people with neuromuscular impairment by using their brainwaves and eye blinks. This entire system is made wearable and functional in outside lab environment without requirement of technical expert. We are using cheapest (INR 6,800) available NeuroSky Brainwave Mobile (EEG sensor). Instead of using large number of electrode by applying gel between scalp and electrode as done in traditional EEG this sensor uses single non-invasive dry electrode sensor. So it can directly be placed on head and taken off as a head band without any surgery or using any gel making it functional, wearable and portable in outside lab environment. This makes BCI (Brain Computer Interface) much easy to use and affordable. Taking in account that subject has to alter his mental state to control the chair so response to sudden obstacle and hurdles will be difficult and not simultaneously which can be very dangerous in making assistive machine for locomotion in uneven environments. Hence we have added ultrasonic, infrared, LDR (Light Detecting Resistance), temperature, gas, inertial sensor along with EEG sensor. These sensor will do the trajectory mapping and the subject's mental state will control the driving in this safe trajectory, eye blinks will be used for conscious maneuvering of wheel chair and an instantaneous graph showing the subjects mental state would be displayed for feedback. So during subject's conscious state it will be semi-Autonomous and in unconscious or sleepy state fully autonomous. © 2016 IEEE.

Sharma S.,Mewar University | Dwivedi V.K.,Galgotias University | Pandit S.N.,Noida Institute of Engineering and Technology
International Journal of Green Energy | Year: 2014

Thermoelectric devices are solid-state devices. Semi-conductor thermoelectric power generation, based on the Seebeck effect, and semi-conductor thermoelectric cooling, based on the Peltier effect, have interesting capabilities compared to conventional power generation and cooling systems. The absence of moving components results in increase in reliability, a reduction in maintenance, and an increase of system life; the modularity allows for application in wide range without significant losses in performance; the absence of working fluid avoids environmental dangerous leakages; and the noise reduction appears also to be an important feature. With the rapid development of techniques to make excellent semi-conductor materials the practical applications and theoretical investigations of the thermoelectric devices have come into focus. This article begins with a brief overview of thermoelectric technology, thermoelectric materials, thermoelectric module construction and operation. A review of recent developments in research, commercial development, and typical applications of thermoelectric devices is made. The article draws conclusions on the development and potential application of thermoelectric devices suitable for thermoelectric cooling. © Taylor & Francis Group, LLC.

Singh S.,MMH College Ghaziabad UP | Rani G.,Mewar University
Acta Chimica Slovenica | Year: 2012

This study is related with the development of Pr 3+ selective membrane sensor using 1,5-Bis-(o-aminophenol)-3-thiapentane as a neutral carrier. The sensor with membrane composition of 33% PVC, 54%, o-NPOE, 8% NaTPB and 5% ionophore, exhibits a Nernstian response for Pr 3+ ion, with a wide concentration range of 3.0 × 10 -9-1.0 × 10 -2 mol/L, low detection limit (1.0 × 10 -9 mol/L) and slope of 23.50.3mV decade -1 of activity with in pH range of 2.0-8.8 and fast response time of 7s. The sensor was also found to work satisfactorily in partially non-aqueous media up to 25% (v/v) content of methanol, ethanol or acetone and could be used for a period of 8 months without any change in response characteristics. The proposed membrane electrode was successfully applied as an indicator electrode for the titration of Pr 3+ ion (1.0 × 10 -3 M) with a standard EDTA solution (1.0 × 10 -3 M).

Ojha D.B.,Mewar University
Tamkang Journal of Mathematics | Year: 2012

This article is concerned with a pair of second-order symmetric duals in the context of non-differentiable multiobjective fractional programming problems. We establish the weak and strong duality theorems for the new pair of dual models. Discussion on some special cases shows that results in this paper extend previous work in this area.

Singh V.V.,Vinodini PG College | Ram M.,Graphic Era University | Rawal D.K.,Mewar University
IEEE Transactions on Automation Science and Engineering | Year: 2013

We present a novel method for cost analysis of an engineering system, which consists of two subsystems, viz. subsystem-1 and subsystem-2 with controllers. Subsystem-1 works under the k-out-of-n: good policy. Subsystem-2 consists of three identical units in parallel configuration. Both of these subsystems are connected in series. The controllers control both the subsystems. The operator who is assigned to operate the system may not be satisfied with the organization and hence may fail the whole system deliberately. The system is studied by supplementary variable technique. Various measures of reliability have been discussed. © 2004-2012 IEEE.

Singh S.,P.A. College | Rani G.,Mewar University
Bulletin of the Korean Chemical Society | Year: 2012

The two chelates based on calix[4]arene and thiacalix[4]arene have been synthesized and used as neutral ionophores for preparing PVC based membrane sensor selective to Ho 3+ ion. The addition of potassium tetrakis(4-chlorophenyl)borate (KTpClPB) and various plasticizers, viz., NDPE, o-NPOE, DOP, TEP and DOS have been found to improve significantly the performance of the sensors. The best performance was obtained with the sensor no. 6 having membrane of L2 with composition (w/w) ionophore (2%): KTpClPB (4%): PVC (37%): NDPE (57%). This sensor exhibits Nernatian response with slope 21.10 ± 0.3 mV/decade of activity in the concentration range 3.0 × 10?8 - 1.0 × 10?2 M Ho 3+ ion, with a detection limit of 1.0 × 10?8 M. The proposed sensor performs satisfactorily over a wide pH range of 2.8-10, with a fast response time (5 s). The sensor was also found to work successfully in partially non-aqueous media up to 25% (v/v) content of methanol, ethanol and acetonitrile, and can be used for a period of 4 months without any significant drift in potential. The electrode was also used for the determination of Ho 3+ ions in synthetic mixtures of different ions and the determination of the arsenate ion in different water samples.

Sharma S.,Mewar University | Dwivedi V.K.,Mewar University | Pandit S.N.,Mewar University
International Journal of Energy Research | Year: 2014

Thermoelectric devices are solid-state devices. Semiconductor thermoelectric cooling, based on the Peltier effect, has interesting capabilities compared to conventional cooling systems. In this work second law analysis of thermoelectric coolers has been done with the help of exergy destruction. In the first part, performance of single-stage thermoelectric coolers and multi stage thermoelectric coolers has been compared for same number of thermoelectric elements i.e. 50. The performance parameters considered to compare their performance are rate of refrigeration, coefficient of performance, second law efficiency and exergy destruction. In second part, multi stage thermoelectric coolers have been analyzed for three different combinations of number of elements in two stages of thermoelectric coolers. The result of the analysis shows that the performance of a multi stage thermoelectric cooler which has total 50 elements gives best performance when it has 30 elements in hotter side and 20 elements in colder side out of the three cases considered. The comparison of single-stage thermoelectric cooler and multistage thermoelectric cooler shows that for same number of elements rate of refrigeration (ROR) of single-stage thermoelectric cooler is much higher than that of multi stage thermoelectric cooler. The COP remains same for both of them but the peak value of cop is obtained at much lower value of current supplied in multi stage thermoelectric cooler. Exergy destruction has constant values in single stage as well as multi stage thermoelectric cooler when the two stages have equal number of elements but it decreases with increase in x. The result of comparison of multistage thermoelectric cooler for three values of x i.e. 0.5, 1, 1.5 shows that the COP, ROR and second law efficiency improve and exergy destruction degrades with increase in x and the best performance has been obtained for x=1.5 out of the three values considered. © 2013 John Wiley & Sons, Ltd.

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