Informatics Publishing Limited

Prakash Kumar ¹, S. C. Tiwari ², V. Sreenivas ³, Nand Kumar ⁴, R. K. Tripathi ⁵, A. B. Dey ⁶

Affiliations
1 KGMU Lucknow, SRF (ICMR), Occupational Therapist, AIIMS, New Delhi, IN
2 Department of Geriatric Mental Health, KGMU, Lucknow, IN
3 Department of Biostatistics, AIIMS, New Delhi, IN
4 Department of Psychiatry, AIIMS, New Delhi, IN
5 Department of Geriatric Mental Health, KGMU, Lucknow, 6Professor and Head, Department of Geriatric Medicine, AIIMS, New Delhi, IN
6 Department of Geriatric Medicine, AIIMS, New Delhi, IN

Abstract

Background: Researchers and clinicians are working hard for prevention and management of dementia and its complications, no definite remedy is available now. Our aim is to investigate effects of occupational therapy in maintaining quality of life of patients having mild to moderate dementia.

Methodology: 263 older subjects (new-182, old-81) were included between November 2010 and April 2013. After screening of all patients by a geriatrician, 192 were excluded having [Cognitive impairment with no dementia (CIND)]. Rest 71 patients were included after satisfying DSM IV criteria and were randomly assigned to experimental and control groups. Experimental group received newly developed occupational therapy intervention along with the drug, and control group received only drug for a period of 5 weeks. Both groups were evaluated using the six outcome measures a) Folstein Mini Mental status examination, b) Geriatric Depression scale Hindi Version c)Bristol Activity of daily Living, d) Modified Physical Performance test, e) BEHAV-AD, f)WHO QOL [Hindi Version] obtained baseline and reassessment after 5 weeks.

Result: Included subjects with mean age 69.39 having 33.80% of primary education, 32.39 % up to class 12, 47.88% of living with spouse, 47.88% of living with spouse and family, 78.87% married, 16.9% widowed, 22.53% unemployed, 43.66% retired. After application of novel occupational therapy on experimental group there is statistically improvement in the domain of Depression, ADL, Physical performance, and quality of life, out of all six domains.

Conclusion: The study reveals that the newly developed occupational therapy program can improve behavioral status, functionality, physical performance, mood and quality of life in elderly dementia patient at short term. A follow up study is required to ascertain the long term effect of treatment.

Keywords

Novel Occupational Therapy Intervention Programme and Dementia

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Prakash Kumar ¹, H. C. Tewari ¹, K. Sain ¹

Affiliations
1 National Geophysical Research Institute, Hyderabad - 500 007, IN

Abstract

Deep Seismic Sounding (DSS) studies were started in India in 1972, but till date no attempt has been made to synthesize the data to provide a bird's eye view of the variation in crustal model. Present synthesis of seismic data provides a glimpse of change in the regional velocity scenario as well as basement and Moho depth configurations in selected parts of the Indian crust. In the sedimentary basins of east-coast, Bengal and Cambay, the basement depth varies between 2 and 10 km, and the Proterozoic Vindhyan and Cuddapah basins show maximum depths of 5 and 10 km respectively. The maximum Moho depth is indicated as 42-44 km in the central Indian region.

Keywords

Geophysics, Deep Seismic Sounding (DSS), Basement, Moho, Crustal Model.

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P. Nageswar Rao ¹, Prakash Kumar ¹, S. K. Srivastava ¹, R. M. Sinha ¹

Affiliations
1 Atomic Minerals Directorate for Exploration and Research, Department of Atomic Energy, Begumpet, Hyderabad - 500 016, IN

Abstract

No Abstract.

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Prakash Kumar ¹, D. K. Palwalia ¹

Affiliations
1 Rajasthan Technical University, Kota - 324010, Rajasthan, IN

Abstract

Background/Objective: This paper presents regulation of Self Excited Induction Generator (SEIG) as asynchronous generator in standalone mode for wind energy conversion system (WECS). Methods/Statistical Analysis: The proposed controller consists of Voltage Source Converter (VSC) having bidirectional active & reactive power flow control, integrated with Battery Storage Unit (BSU), connected in shunt. It compensates for variable reactive power with variable active power. Rating of induction machine has been obtained by short circuit test, open circuit test and synchronous speed test. Findings: SEIG have relative advantage over conventional synchronous generator. However, vo1ltage and frequency regulation are among prime challenges in its practical application as standalone generator. Voltage and frequency of SEIG depends upon speed of rotor, shunt capacitor and load. A suitable control scheme needs to be developed to ensure minimum variation in voltage and frequency for variable input and electrical load. Voltage regulation has been achieved by adjusting reactive power provided by static compensator consisting of inductor a VSC and dc bus capacitor. Conclusion/Improvement: The simulation results show that voltage and frequency of SEIG-WECS have negligible variation for resistive, reactive, balanced, unbalanced and nonlinear load under varying wind speed and consumer load. It eliminates harmonic contents and balances the connected electrical load.

Keywords

Battery Storage Unit, Standalone Generator, Self Excited Asynchronous Generator, Voltage Source Converter, Voltage and Frequency Regulation.

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Amrit Puzari , Sharat Saurabh , Tania Bhowmik , Priyanka Basu , Prakash Kumar , Pawan Pandey , Jugananda Sut , Parameswar Rao Ramesh , Venkatesh Gude

Abstract

Preparation and characterization of Hydroquinone aggregate-TiO₂ composite material through a copper (II) catalyzed reaction have been presented with discussion on the probable scope of utility of such materials in the fields like electronic, optoelectronic, LED, Plastic laser as well as for solar cell application. Methodology reported in literature for preparation of hydroquinone aggregate was used with minor modification. The products are soluble in organic solvents like ethanol indicating well inclusion of TiO₂ particles within the matrix of hydroquinone aggregate. Characterization of the composite materials is performed using spectroscopic techniques such as IR spectroscopy and UV-Vis spectroscopy which supports the formation of the composite material. Thermal stability of the products was ascertained by using Differential Scanning Calorimetry (DSC). Product shows appreciable thermal stability. Since hydroquinone aggregate has already been reported as promising to have thermoelectric switching behavior therefore the composite material is likely to have potential utility in the fields like electronics, opto-electronics as well as for solar cell application.

Keywords

Composite material, Hydroquinone aggregate, Nanostructured TiO₂, Solar cell

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Prakash Kumar ¹, Gaurav Bhadauria ¹

Affiliations
1 Department of Production Engineering, B. I. T. Sindri, Dhanbad, Jharkhand, IN

Abstract

Maintenance problems in mining equipments are considered as ill-structured problems for which effective algorithmic results are not possible due to lack of unknown nature of failures and mine conditions.
Most of the maintenance models focus on equipment failure in terms of sudden stoppage. Majority of the maintenance optimization models are, in general, considers a fixed value of the cost of breakdown maintenance. But, the cost of breakdown maintenance not only includes down time losses and repair/replacement cost, but may also include various indirect cost. Early detection of failure modes represents the most effective way to reduce the chances of equipment failure but the existing Indian scenario in terms of machine maintenance reveals the predominance of breakdown maintenance culture in the coal mining industries in particular and industries involving heavy duty earth moving machinery in general.
Various expert systems have been used in coal mining industries to support engineering design and decision making. Its availability can be found in various mining parameters such as geological condition, mining condition, dig-ability assessment. Its availability can also be found in the area of material handling equipments to hydro electric generator. It has been used as a trouble-shooter in various industrial as well as mining applications. Besides, it has been used as an optimization tool for equipment selection in mining. Many researchers worked in the area of cost optimization in mining operation through artificial intelligence technique. Advanced fault diagnosis methods have also been used in various research works such as model-based approaches, knowledge based approaches, qualitative simulation, neural network, genetic algorithm and classical multivariate statistical techniques.
But, very few models focus on the investigation of preventive replacement or a perfect planned maintenance policy or total productive maintenance policy that restores the equipment to an as-good-as-new state.

Keywords

Expert System, Failure and Maintenance Optimization Model, Mine Excavator.

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Anish Deb ¹, Sumanta Karmakar ², Pranav Priyadarshi ¹, Prakash Kumar ¹, Paritosh Mahto ¹

Affiliations
1 Department of Mechanical Engineering, Asansol engineering College, Asansol-713305, IN
2 Department of Electronics and Communication Engineering, Asansol engineering College, Asansol-713305, IN

Abstract

In this paper capturing of wind energy using bladeless device which is a new approach has been discussed. The energy of vorticity which is an aerodynamic effect has been captured by this device. A cyclical pattern of vortices has been generated when the wind bypasses a fixed structure and the fixed structure starts oscillating when these forces are strong enough. Without avoiding these aerodynamic instabilities this device maximizes the resulting oscillation and captures that energy. Naturally, such device is completely different from traditional turbine. Instead of the usual tower, nacelle and blades, the device has a fixed mast, a power generator and a hollow, light weight and semi-rigid fibreglass cylinder on top. In this device the technology has been used is very cost effective and highly competitive not only against generations of alternative or renewable energy, but even compared to conventional technologies.

Keywords

Vorticity, Aerodynamic Effect.

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