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38 results

Page 1 of 2

  • Role of circumferential subannular tympanoplasty in anterior and subtotal perforations

  • G B Singh, S Ranjan, R Arora, S Kumar
  • Journal:
    The Journal of Laryngology & Otology / Volume 131 / Issue 2 / February 2017
    Published online by Cambridge University Press:
    10 January 2017, pp. 123-127
    Print publication:
    February 2017
  • Objective:

    This study aimed to evaluate the surgical success of a modified inlay tympanoplasty technique, known as circumferential subannular tympanoplasty, for anterior and subtotal perforations.

    Methods:

    This prospective study was performed in a tertiary care teaching hospital between October 2013 and April 2016. A total of 58 adult patients of both sexes with anterior or subtotal perforations underwent circumferential subannular tympanoplasty under local anaesthesia. In this technique, after tympanomeatal flap elevation, the temporalis fascia graft is placed directly onto the annulus instead of being tucked underneath the tympanic membrane remnant. Outcome data were graft uptake and hearing improvement.

    Results:

    This technique had a surgical success rate of 97 per cent and led to significant hearing improvement.

    Conclusion:

    Circumferential subannular tympanoplasty has a definitive role in managing anterior and subtotal perforations.

  • Tympanoplasty: does dry or wet temporalis fascia graft matter?

  • G B Singh, D Kumar, K Aggarwal, S Garg, R Arora, S Kumar
  • Journal:
    The Journal of Laryngology & Otology / Volume 130 / Issue 8 / August 2016
    Published online by Cambridge University Press:
    26 July 2016, pp. 700-705
    Print publication:
    August 2016
  • Objectives:

    To evaluate the success rate of dry and wet temporalis fascia grafts in type I underlay tympanoplasty.

    Methods:

    A prospective, randomised study was conducted. One hundred adult patients (males and females) with chronic suppurative otitis media (mucosal type) were divided into 2 groups of 50 each: one group underwent dry graft tympanoplasty and the other underwent wet graft tympanoplasty. Fibroblast count was calculated in dry and wet grafts.

    Results:

    The dry graft and wet graft groups had overall surgical success rates of 82 and 90 per cent, respectively; this finding was not statistically significant. A statistically significant high fibroblast count was observed in wet grafts, but it did not correlate with surgical success.

    Conclusion:

    A dry or wet temporalis fascia graft does not influence the outcome of tympanoplasty type I.

  • Paediatric tympanoplasty: comparative study between patients aged 5–8 years and those aged over 14 years

  • G B Singh, R Arora, S Garg, S Kumar, D Kumar
  • Journal:
    The Journal of Laryngology & Otology / Volume 130 / Issue 7 / July 2016
    Published online by Cambridge University Press:
    10 June 2016, pp. 635-639
    Print publication:
    July 2016
  • Objective:

    To evaluate and analyse the success rate of tympanoplasty type I in paediatric patients aged 5 to 8 years compared to a control group (patients aged over 14 years).

    Methods:

    In this prospective study, 60 patients (of either sex) with chronic suppurative otitis media inactive mucosal disease were divided into 2 groups (30 in each): group A comprised paediatric patients aged 5–8 years and group B consisted of older individuals aged over 14 years. All patients underwent tympanoplasty type I with an underlay technique using a temporalis fascia graft.

    Results:

    Impressive surgical success rates of 87 and 90 per cent were recorded in groups A and B, respectively. Furthermore, audiological success rates of 69 and 78 per cent were achieved in groups A and B respectively. Statistical analysis of the data revealed that eustachian tube function had no impact on the outcome of tympanoplasty.

    Conclusion:

    Tympanoplasty type I performed in children aged five to eight years gives comparable results to those of older individuals.

Solar Photovoltaics
  • A Lab Training Manual
  • Chetan S. Solanki, Brij M. Arora, Juzer Vasi, Mahesh B. Patil
  • Published by:
    Foundation Books
    Published online:
    05 September 2013
    Print publication:
    19 November 2012
  • This text provides an up-to-date description of the photovoltaic (PV) components and systems. It contains detailed information on several carefully planned experiments on solar PV cells and modules. The book is divided into two sections: User Manual and Experiments. The experiments are related to the ‘characterization’ and ‘simulation’ of solar cells to allow the users to measure various kinds of data on solar cells, modules and PV systems. The simulation experiments would enable the users to simulate solar cells and circuits containing solar cells. The Manual provides an intuitive grasp of PV system components and their behaviour in the field through a discussion of the underlying objectives, expected outcome, theory, equipment used, measurement methodology and results. The Manual will help users in understanding and execution of various experiments related to solar PV.

    This book would be an extremely useful reference manual not only for the technicians and system installers working in the PV field, but also for the students and researchers interested in understanding the fundamental aspects of PV system components and their interconnection.

  • Preface

  • Chetan S. Solanki, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India, Brij M. Arora, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India, Juzer Vasi, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India, Mahesh B. Patil, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India
  • Book:
    Solar Photovoltaics
    Published by:
    Foundation Books
    Published online:
    05 September 2013
    Print publication:
    19 November 2012, pp v-vi

  • Summary

    India has launched the Jawaharlal Nehru National Solar Mission (JNNSM) in 2009 with the ambitious target of installing 20,000 MW of solar power in the country by the year 2022. In order to achieve such a target, there is a need for a large number of trained people in the area of Solar Photovoltaics.

    It is our pleasure to present this PV lab training manual as part of the ‘Teach a 1000 Teachers’ training programme on Photovoltaics. This initiative is part of the National Centre for Photovoltaic Research and Education (NCPRE, www.ncpre.iitb.ac.in), established at IIT Bombay by the Ministry of New and Renewable Energy (MNRE). We hope that this training initiative taken by NCPRE will be useful in fulfilling the manpower needs of JNNSM.

    The manual contains detailed information on several carefully planned experiments on solar PV cells and modules. The planned experiments are in the areas of ‘characterization’ and ‘simulation’. The characterization experiments are planned to allow you to measure various data on solar cells, modules and PV systems. The simulation experiments enable you to simulate solar cells and circuits containing solar cells. For each experiment the details, such as its objective, expected outcome, theory, the equipments used, measurement methodology, results and discussion, are given.

  • Contents

  • Chetan S. Solanki, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India, Brij M. Arora, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India, Juzer Vasi, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India, Mahesh B. Patil, Professor, Department of Electrical Engineering, Indian Institute of Technology Bombay, India
  • Book:
    Solar Photovoltaics
    Published by:
    Foundation Books
    Published online:
    05 September 2013
    Print publication:
    19 November 2012, pp iii-iv

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