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Dr.K.G.Asha Manjari
DR.K.G.ASHA MANJARI PROFESSOR Department of studies in Earth science Centre for Advanced study in Precambrian Geology University of Mysore, Manasagangotri, Mysore-570 006 [email protected] +91-9448600554 ADDRESS Office Dept. of Studies in Earth science, University of Mysore, Manasagangotri, Mysore- 570 006, Karnataka, INDIA. +91-821-2419721, Mob: +91-9448600554 E-mail: [email protected] Residential 10/B, SPARSHA, 2nd Main, 2nd Cross, Bogadhi IInd Stage MYSORE-570 026, Karnataka, INDIA. ACADEMIC QUALIFICATIONS EDUCATIONAL QUALIFICATION: Bachelor of science, University of Mysore, Mysore, India- 1981 Master of science, University of Mysore, Mysore, India-First Rank-1983 Doctor of Philosophy, University of Mysore, Mysore, India-1989 Recipient of Mysore University Padmamma Salighrama Gold Medal and Prof. Nikkam’s Science Rotation Gold Medal in M.Sc.-1983 Young Scientist Travel Grant from DST and CSIR to attend IGCP 301at USA in 1992 Visiting Scientist at Rice University, Houston, USA 1992. Recipient of Young Scientist Research Project from DST 1994. Recipient of Prof. Satish Dhawan Young Scientist Award from KSCST, Government of Karnataka in 2006 Recipient of Bharat Jyoti Award from India International Friendship Society, New Delhi 2012 TITLE OF THE DOCTORAL THESIS Chemical Petrology of the Granulite and other associated rock types around Nilgiri hills Tamilnadu, India. VISITS ABROAD: USA, Sri Lanka , Singapore and China TEACHING EXPERIENCE: Twenty-six years to Post-graduate (Geology, Applied Geology & Earth Science & Resource Management) Guiding students for Ph.D degree. Successfully guided students for Minor and Major (dissertation work) Projects. MEMBERSHIP OF PROFESSIONAL BODIES Life Fellow and member of advisory committee of Mineralogical Society of India. -
Thermodynamic Analysis of GM-Type Pulse Tube Coolers Q Y.L
Cryogenics 41 &2001) 513±520 www.elsevier.com/locate/cryogenics Thermodynamic analysis of GM-type pulse tube coolers q Y.L. Ju *,1 Cryogenic Laboratory, Chinese Academy of Sciences, P.O. Box 2711, Beijing 100080, People's Republic of China Received 29 January 2001; accepted 28 June 2001 Abstract The thermodynamic loss of rotary valve and the coecient of performance &COP) of GM-type pulse tube coolers &PTCs) are discussed and explained by using the ®rst and second laws of thermodynamics in this paper. The COP of GM-type PTC, based on two types of pressure pro®les, the sinusoidal wave inside the pulse tube and the step wave at the compressor side, has been derived and compared with that of Stirling-type PTC. Result shows that additional compressor work is needed due to the irreversible entropy productions in the rotary valve thereby decreasing the COP of GM-type PTC. The eect of double-inlet mode on the COP of PTC has distinct improvement at lower temperature region &larger TH=TL). It is also shown that the COP of GM-type PTC is independent of the shape of the pressure pro®les in the ideal case of no ¯ow resistance in the regenerator. Ó 2001 Elsevier Science Ltd. All rights reserved. Keywords: Pulse tube cooler; GM-type; Thermodynamic analysis 1. Introduction achieved [13]. All these machines use a compressor and a valve system to produce pressure oscillation in the In general pulse tube cooler &PTC) requires a phase cooler system. They are called GM-type PTCs. shifter system, located at the hot end of the pulse tube, A GM-type PTC, shown in Fig. -
MODELING and ANALYSIS of PULSE TUBE REFRIGERATOR 1Nishant Solanki, 2Nimesh Parmar
Solanki et al., International Journal of Advanced Engineering Technology E-ISSN 0976-3945 Research Paper MODELING AND ANALYSIS OF PULSE TUBE REFRIGERATOR 1Nishant Solanki, 2Nimesh Parmar Address for Correspondence 1Student, M.E. (Thermal Engineering), Gandhinagar Institute of Technology, Gandhinagar, Gujarat, India 2Asst. Professor, Mechanical Engineering Department, Gandhinagar Institute of Technology, Gandhinagar, Gujarat, India ABSTRACT: Cryogenics comes from the Greek word “kryos”, which means very cold or freezing and “genes” means to produce. Cryogenics is the science and technology associated with the phenomena that occur at very low temperature, close to the lowest theoretically attainable temperature. In this research paper, three dimensional model of pulse tube refrigerator is developed in ANSYS CFX and compared it with experimental results. It shows good agreement with experimental results with ANSYS CFD results. KEYWORDS : Pulse tube refrigerator, ANSYS CFD INTRODUCTION: volume on the thermodynamic performance of The pulse tube refrigerators (PTR) are capable of various components in a simple orifice and a double cooling to temperature below 123K. Unlike the inlet pulse tube cooler by combining a linearized ordinary refrigeration cycles which utilize the vapour model with a thermodynamic analysis. The results compression cycle as described in classical reveal that the performance of the pulse tube cooler is thermodynamics, a PTR implements the theory of significantly affected when the reservoir to pulse tube oscillatory compression and expansion of the gas volume ratio is less than 5, which helps the design of within a closed volume to achieve desired a practical pulse tube cooler. refrigeration. Being oscillatory, a PTR is a non steady Y.L. He, C.F. -
Group Housing
LIST OF ALLOTED PROPERTIES DEPARTMENT NAME- GROUP HOUSING S# RID PROPERTY NO. APPLICANT NAME AREA 1 60244956 29/1013 SEEMA KAPUR 2,000 2 60191186 25/K-056 CAPT VINOD KUMAR, SAROJ KUMAR 128 3 60232381 61/E-12/3008/RG DINESH KUMAR GARG & SEEMA GARG 154 4 60117917 21/B-036 SUDESH SINGH 200 5 60036547 25/G-033 SUBHASH CH CHOPRA & SHWETA CHOPRA 124 6 60234038 33/146/RV GEETA RANI & ASHOK KUMAR GARG 200 7 60006053 37/1608 ATEET IMPEX PVT. LTD. 55 8 39000209 93A/1473 ATS VI MADHU BALA 163 9 60233999 93A/01/1983/ATS NAMRATA KAPOOR 163 10 39000200 93A/0672/ATS ASHOK SOOD SOOD 0 11 39000208 93A/1453 /14/AT AMIT CHIBBA 163 12 39000218 93A/2174/ATS ARUN YADAV YADAV YADAV 163 13 39000229 93A/P-251/P2/AT MAMTA SAHNI 260 14 39000203 93A/0781/ATS SHASHANK SINGH SINGH 139 15 39000210 93A/1622/ATS RAJEEV KUMAR 0 16 39000220 93A/6-GF-2/ATS SUNEEL GALGOTIA GALGOTIA 228 17 60232078 93A/P-381/ATS PURNIMA GANDHI & MS SHAFALI GA 200 18 60233531 93A/001-262/ATS ATUULL METHA 260 19 39000207 93A/0984/ATS GR RAVINDRA KUMAR TYAGI 163 20 39000212 93A/1834/ATS GR VIJAY AGARWAL 0 21 39000213 93A/2012/1 ATS KUNWAR ADITYA PRAKASH SINGH 139 22 39000211 93A/1652/01/ATS J R MALHOTRA, MRS TEJI MALHOTRA, ADITYA 139 MALHOTRA 23 39000214 93A/2051/ATS SHASHI MADAN VARTI MADAN 139 24 39000202 93A/0761/ATS GR PAWAN JOSHI 139 25 39000223 93A/F-104/ATS RAJESH CHATURVEDI 113 26 60237850 93A/1952/03 RAJIV TOMAR 139 27 39000215 93A/2074 ATS UMA JAITLY 163 28 60237921 93A/722/01 DINESH JOSHI 139 29 60237832 93A/1762/01 SURESH RAINA & RUHI RAINA 139 30 39000217 93A/2152/ATS CHANDER KANTA -
Another Global History of Science: Making Space for India and China
BJHS: Themes 1: 115–143, 2016. © British Society for the History of Science 2016. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. doi:10.1017/bjt.2016.4 First published online 22 March 2016 Another global history of science: making space for India and China ASIF SIDDIQI* Abstract. Drawing from recent theoretical insights on the circulation of knowledge, this article, grounded in real-world examples, illustrates the importance of ‘the site’ as an analytical heur- istic for revealing processes, movements and connections illegible within either nation-centred histories or comparative national studies. By investigating place instead of project, the study reframes the birth of modern rocket developments in both China and India as fundamentally intertwined within common global networks of science. I investigate four seemingly discon- nected sites in the US, India, China and Ukraine, each separated by politics but connected and embedded in conduits that enabled the flow of expertise during (and in some cases despite) the Cold War. By doing so, it is possible to reconstruct an exemplar of a kind of global history of science, some of which takes place in China, some in India, and some else- where, but all of it connected. There are no discrete beginnings or endings here, merely points of intervention to take stock of processes in action. Each site produces objects and knowledge that contribute to our understanding of the other sites, furthering the overall narra- tive on Chinese and Indian efforts to formalize a ‘national’ space programme. -
Mathematical Analysis of Pulse Tube Cryocoolers Technology
Global Journal of researches in engineering Electrical and electronics engineering Volume 12 Issue 6 Version 1.0 May 2012 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc. (USA) Online ISSN: 2249-4596 & Print ISSN: 0975-5861 Mathematical Analysis of Pulse Tube Cryocoolers Technology By Shashank Kumar Kushwaha , Amit medhavi & Ravi Prakash Vishvakarma K.N.I.T Sultanpur Abstract - The cryocoolers are being developed for use in space and in terrestrial applications where combinations of long lifetime, high efficiency, compactness, low mass, low vibration, flexible interfacing, load variability, and reliability are essential. Pulse tube cryocoolers are now being used or considered for use in cooling infrared detectors for many space applications. In the development of these systems, as presented in this paper, first the system is analyzed theoretically. Based on the conservation of mass, the equation of motion, the conservation of energy, and the equation of state of a real gas a general model of the pulse tube refrigerator is made. The use of the harmonic approximation simplifies the differential equations of the model, as the time dependency can be solved explicitly and separately from the other dependencies. The model applies only to systems in the steady state. Time dependent effects, such as the cool down, are not described. From the relations the system performance is analyzed. And also we are describing pulse tube refrigeration mathematical models. There are three mathematical order models: first is analyzed enthalpy flow model and heat pumping flow model, second is analyzed adiabatic and isothermal model and third is flow chart of the computer program for numerical simulation. -
Indian Institute of Space Science and Technology (IIST) NEWSLETTER Vol.4, No.1, January 2019
Indian Institute of Space Science and Technology (IIST) NEWSLETTER www.iist.ac.in Vol.4, No.1, January 2019 Director’s Message th Greetings! 6 IIST Convocation I am delighted to announce the re-launch of Indian Institute of Space Dr. V K Dadhwal, Director IIST's News Letter from January 2019. This Science and Technology (IIST) and Chairman BoM, IIST task has been assigned to a new Newsletter th conducted its 6 convocation along with Deans, Senior Committee which will regularly bringing on 18 t h July 2018 at Dr. Professors and Heads of the out two issues annually to share and widely Srinivasan Auditorium, VSSC. Departments. Dr. B N Suresh, circulate on the important events at the The convocation started at Chancellor, IIST opened the institute. Featured in the current issue are the 14.00 hrs with the academic convocation proceedings. host of activities and happenings at the procession led by Prof. A institute during 1st July 2018 to 31st December Chandrasekar, Registrar, IIST th and was joined by Dr. B N Dr. V K Dadhwal, Director 2018. Highlights of the issue include the 6 and Chairman, BoM, IIST in convocation held on 18th July 2018, Dr. Abdul Suresh, Chancellor, IIST, Dr. K S i v a n , C h a i r m a n , h i s w e l c o m e s p e e c h Kalam Lecture, Foundation day celebration, Governing Council, IIST, e l a b o r a t e d o n t h e International and National conferences, Chairman ISRO and Secretary achievements of IIST over the Seminars and workshops organised by us. -
Vapor Precooling in a Pulse Tube Liquefier
Presented at the 11th International Cryocooler Conference June 20-22, 2000 Keystone, Co Vapor Precooling in a Pulse Tube Liquefier E.D. Marquardt, Ray Radebaugh, and A.P. Peskin National Institute of Standards and Technology Boulder, CO 80303 ABSTRACT Experiments were performed to study the effects of introducing vapor into a dewar where a coaxial pulse tube refrigerator was used as a liquefier in the neck of the dewar. We were concerned about how the introduction of vapor might impact the refrigeration load as the vapor barrier in the neck of the dewar is disturbed. Three experiments were performed where the input power to the cooler was held constant and the nitrogen liquefaction rate was measured. The first test introduced the vapor at the top of the dewar neck. Another introduced the vapor directly to the cold head through a small tube, leaving the neck vapor barrier undisturbed. The third test placed a heat exchanger partway down the regenerator where the vapor was pre-cooled before being liquefied at the cold head. This experiment also left the neck vapor barrier undisturbed. Compared to the test where the vapor was introduced directly to the cold head, the heat exchanger test increased the liquefaction rate by 12.0%. The experiment where vapor was introduced at the top of the dewar increased the liquefaction rate by 17.2%. A computational fluid dynamics model was constructed of the dewar neck and liquefier to show how the regenerator outer wall acted as a pre-cooler to the incoming vapor steam, eliminating the need for the heat exchanger. -
6 Dr. A. P. J. Abdul Kalam Lecture Legion D'honneur' (2002) by the President of the French Republic, France
About the Speaker Dr Krishnaswamy Kasturirangan completed his BSc with Honours and MSc in Physics from Bombay University and received his Doctorate in Experimental High Energy Astronomy in 1971. His interests include astrophysics, space science and technology as well as science related policies. भारतीय अतं र वान एवं ौयोगक संथान Dr Kasturirangan was with the ISRO for over a period of nearly 35 years including nearly 10 years Indian Institute of Space Science and Technology as its Chairman from 1994-2003. He was a Member, Rajya Sabha (2003-2009) and concurrently the वलयमला, तवनंतपरम Director of NIAS, Bangalore. He served as a Member of the erstwhile Planning Commission (2009- ु Valiamala, Thiruvananthapuram 2014). Dr Kasturirangan served the Karnataka Knowledge Commission as its Chairman and was entrusted as the Chairman of the Committee for drafting the new National Education Policy. Presently he is the Chairman, Governing Board, IUCAA, Pune; Chancellor, Central University of Rajasthan; Chairperson, NIIT University, Neemrana; Member, Atomic Energy Commission; Emeritus Professor at NIAS, Bangalore and Honorary Distinguished Advisor, ISRO. Dr Kasturirangan is a Member of several International and National Science Academies. He is a Member of the International Astronomical Union, Fellow of TWAS, Honorary Fellow of the Cardiff University, UK and Academician of the Pontifical Academy of Sciences, Vatican City. Dr Kasturirangan is the only Indian to be conferred the Honorary Membership of the International Academy of Astronautics. Dr Kasturirangan was the first to occupy the Satish Dhawan Chair of Engineering Eminence (2015- 2017). He also occupied as the Chairman, BG, IIT, Chennai (2000-2005), Chairman, Council, IISc, Bangalore (2004-2015), Chancellor, JNU, New Delhi (2012-17), Chairman, Council, RRI, Bangalore (2000-2016). -
Handbook 2018-19
FACULTY OF ENGINEERING AND TECHNOLOGY Handbook 2018-19 SRM Nagar, Kattankulathur - 603 203 Kancheepuram District, Tamilnadu Telephone: 044- 27417499, 27417000 Fax: 044-27453903 URL: www.srmuniv.ac.in “Motivation gets you going, but, Discipline keeps you growing.” — John C. Maxwell Best Wishes for a Productive and Enjoyable Academic Year 2018–19 PERSONAL MEMORANDA 1. NAME : ________________________ 2. REGISTER NO. : ________________________ 3. YEAR & COURSE : ________________________ 4. BRANCH / SECTION : ________________________ 5. HOSTEL BLOCK & ROOM NO. : ________________________ 6. BUS PASS NO. : ________________________ 7. TRAIN PASS NO. : ________________________ 8. AADHAR CARD NO. : ________________________ 9. ADDRESS FOR COMMUNICATION : ________________________ ________________________ ________________________ 10. PERMANENT ADDRESS : ________________________ : ________________________ : ________________________ 11. MOBILE NO. : ________________________ 12. E-MAIL ID : ________________________ 13. DATE OF BIRTH : ________________________ 14. BLOOD GROUP : ________________________ 15. HEIGHT & WEIGHT : ________________________ 16. IDENTIFICATION MARKS : ________________________ FROM THE CHANCELLOR SRM Institute of Science and Technology engineering programs endeavor to be at the forefront of innovation. They also foster multi-disciplinary collaborations aimed at solving the most pressing global problems. Our mission is to seek solutions to global challenges by using the power of engineering principles, techniques and systems. We -
Satish Dhawan
CORRESPONDENCE Satish Dhawan The Special Section in Current Science, minded the Cabinet of the pending Committee (ICC) were SD’s initiatives 2020, 119(9), 1417–1488, celebrating the INSAT-I proposal. Instead of asking the and management innovations. SD’s pres- birth centenary of Satish Dhawan (SD), then post-election inactive main group, entation style ‘Red Book’, in A4-size the first Chairman of the Space Commis- the Cabinet, while approving APPLE landscape-orientation, on his group’s re- sion and Secretary, Department of Space investment, asked DoS to bring up the port and recommendations to the main (DoS), Government of India, besides INSAT-I proposal within a month. This group on INSAT-I is a classic document; several other leadership roles that he had was obviously facilitated by the ‘last ahead of its times in a style, that would played in institutions like the Indian In- ICS’ Cabinet Secretary Nirmal Mukher- later be generically known as a ‘power stitute of Science (IISc), Bangalore, that jee, who as Secretary Civil Aviation – point’ presentation. he headed, served, guided or set-up, is a under which Ministry IMD was then – Another important step for the imple- collector’s item. had got to understand the transformative mentation and oversight of the multi- Here, I would like to add an under- role and function of INSAT while partic- agency INSAT project was the creation recognized dimension to the seminal and ipating actively in the SD-led INSAT-I of the unique INSAT Coordination defining role that SD played in so many System Definition Sub-Group of Secreta- Committee of Secretaries chaired by Sec- aspects of satellite-based services for ries. -
513691 Journal of Space Law 35.1.Ps
JOURNAL OF SPACE LAW VOLUME 35, NUMBER 1 Spring 2009 1 JOURNAL OF SPACE LAW UNIVERSITY OF MISSISSIPPI SCHOOL OF LAW A JOURNAL DEVOTED TO SPACE LAW AND THE LEGAL PROBLEMS ARISING OUT OF HUMAN ACTIVITIES IN OUTER SPACE. VOLUME 35 SPRING 2009 NUMBER 1 Editor-in-Chief Professor Joanne Irene Gabrynowicz, J.D. Executive Editor Jacqueline Etil Serrao, J.D., LL.M. Articles Editors Business Manager P.J. Blount Michelle Aten Jason A. Crook Michael S. Dodge Senior Staff Assistant Charley Foster Melissa Wilson Gretchen Harris Brad Laney Eric McAdamis Luke Neder Founder, Dr. Stephen Gorove (1917-2001) All correspondence with reference to this publication should be directed to the JOURNAL OF SPACE LAW, P.O. Box 1848, University of Mississippi School of Law, University, Mississippi 38677; [email protected]; tel: +1.662.915.6857, or fax: +1.662.915.6921. JOURNAL OF SPACE LAW. The subscription rate for 2009 is $100 U.S. for U.S. domestic/individual; $120 U.S. for U.S. domestic/organization; $105 U.S. for non-U.S./individual; $125 U.S. for non-U.S./organization. Single issues may be ordered at $70 per issue. For non-U.S. airmail, add $20 U.S. Please see subscription page at the back of this volume. Copyright © Journal of Space Law 2009. Suggested abbreviation: J. SPACE L. ISSN: 0095-7577 JOURNAL OF SPACE LAW UNIVERSITY OF MISSISSIPPI SCHOOL OF LAW A JOURNAL DEVOTED TO SPACE LAW AND THE LEGAL PROBLEMS ARISING OUT OF HUMAN ACTIVITIES IN OUTER SPACE. VOLUME 35 SPRING 2009 NUMBER 1 CONTENTS Foreword ..............................................