‘Our classes were held where freedom fighters were locked up,’ says Narasimhan Venkatesan Patel, Alumnus of the First Batch at IIT KGP

Mr. Narasimhan Venkatesan Patel, Former Member of the Railway Board and an Electrical Engineering Alumnus (1951-55) of IIT Kharagpur, shares some interesting anecdotes about the faculty and how IIT Kharagpur took special tutorials of students who appeared in Class 12 exams from different boards or syllabi. The Indian Institute of Technology, Kharagpur was established in 1951 and is the oldest among all the IITs in the country. As the institute was set up in the Hijli detention camp of West Bengal, it has a link with the freedom fighters of India.

“We mostly had classes in the old Hijli Central Jail building during the first two years. A big hangar inside the compound served as the workshop. Our staff, some of whom had served in the prison administration as Jailers, mentioned that our classrooms were the rooms where prisoners who were great freedom fighters were locked up, and some were tortured and later died,” remarked the Alum.

To bolster the country’s growth and make it self-reliant, the government started establishing IITs, IIMs and AIIMS. Like other IITs, the classes of the first batch commenced on a half-constructed campus.

“Since our hostel, Patel Hall, was half ready when the first year started, we had to share rooms. Interestingly, as there were differences in syllabus levels in different universities at intermediate science where students took admission, tutorials of Math and English were organised after dinner in the hostel for the first two terms of the first year,” Patel said.

“The initial struggles and our saviour”

IIT Kharagpur campus was spread over 2100 acres in the vast tree-laden campus. Along with a tough syllabus, the initial batches had to struggle with wildlife. “There were snakes around the hostel under construction and our beloved director Dr. J C Ghosh, also a famed Indian scientist, ordered the cutting of drains around and spraying of carbolic acid. The humane and kind approach of Dr. J C Ghosh made us withstand many hardships. In the third year, we moved to the classes in the new building,” he said.

Dr. J C Ghosh left IIT in the third year to join as the Vice Chancellor of Calcutta University. A student delegation from IIT met Dr. B. C. Roy the then Chief Minister of West Bengal to plead with him the need for continuing Dr. J C Ghosh, revered as a father figure by the students. Dr. B C Roy is stated to have quipped, “We will send another father figure to you.”

Dr. B R Sengupta, Principal of Shibpur Engineering College, was appointed as the next director for IIT Kharagpur. As per Patel, Dr. Sen Gupta was a strict disciplinarian and a stickler for targets.

Despite being the first batch, the students, were fortunate to have the best faculty possible. “Dr. Krause Mechanical Engineering, Prof Malonowsky, Production Technology (UNESCO support) on the mechanical side and Prof. Keshav Murthy, Prof Srinivasan, Dr. Menon gave us deep insights into Electrical Engineering. They took us to much higher heights in the subjects that I could see the difference in when I joined DVC as an assistant engineer in the Maithon Hydel Project after college in 1955 and Indian Railways in early 1957,” Patel informed.

iit newsFirst convocation at IIT-Kharagpur. The first batch is sitting with the then PM Nehru.

The Indian Institute of Technology, Kharagpur (IIT Kharagpur) was established in 1951 and is the oldest among all the IITs in the country. As the institute was set up in the Hijli detention camp of West Bengal, it has a link with the freedom fighters of India.

An electrical engineering (1951-55) alumnus, Narasimhan Venkatesan Patel (former member of the Railway Board) shares some interesting anecdotes about the faculty and how IIT-Kharagpur took special tutorials of students who appeared in Class 12 exams from different boards or syllabi.

“We mostly had classes in the old Hijlee Central Jail building in the first two years. A big hangar inside the compound served as the workshop. Our staff, some of whom had served in the prison administration as jailors, mentioned that our classrooms were the rooms where prisoners (many great freedom fighters) were locked up, and some were tortured and later died,” he told.

To bolster the country’s growth and make it self-reliant, the government started establishing IITs, IIMs and AIIMS. Like other IITs, the classes of the first batch commenced on a half-constructed campus.

“Since our hostel, Patel Hall, was half ready when the first year started, we had to share rooms. Interestingly, as there were differences in syllabus levels in different universities at intermediate science where students took admission, tutorials of Math and English were organised after dinner in the hostel for the first two terms of the first year,” Patel said.

The initial struggles and our saviour

IIT Kharagpur campus was spread over 2100 acres in the vast tree-laden campus. Along with a tough syllabus, the initial batches had to struggle with wildlife. “There were snakes around the hostel under construction and our beloved director Dr JC Ghosh, also a famed Indian scientist, ordered the cutting of drains around and spraying of carbolic acid. The humane and kind approach of Dr JC Ghosh made us withstand many hardships. In the third year, we moved to the classes in the new building,” he said.

DR JC Ghosh left IIT in the third year to join as the Vice Chancellor of Calcutta University. A student delegation from IIT met Dr BC Roy the then chief minister of West Bengal to plead with him the need for continuing Dr JC Ghosh, revered as a father figure by the students. DR BC Roy is stated to have quipped: “We will send another father figure to you.”

iit kharagpur photosAn old photo of IIT-Kharagpur

DR BR Sengupta, principal of Shibpur Engineering College was appointed as the next director for IIT Kharagpur. As per Patel, Dr Sen Gupta was a strict disciplinarian and a stickler for targets.

Despite being the first batch, the students, as per Patel, were fortunate to have the best faculty possible. “Dr Krause Mech Engg, Prof Malonowsky, Production Technology (UNESCO support) on the mechanical side and Prof Keshav Murthy, Prof Srinivasan, Dr Menon gave us deep insights into electrical engineering. They took us to much higher heights in the subjects that I could see the difference in when I joined DVC as an assistant engineer in the Maithon Hydel Project after college in 1955 and Indian Railways in early 1957,” Patel informed.

‘IITs should consider dual degree programmes’

These days, IITs are coming up with courses to skill up their students. In IIT Kharagpur, however, this has been introduced in the initial years. “One noteworthy feature of the course was the attempt to include Humanities in the course and we had the benefit of Business Management courses in two terms by Prof Nanjundiah. If IIT had allowed more courses in business administration, it would have sent the right mix of engineer managers to the industry,” Patel added.

On the issue of regular engineers drifting from core subjects to computer sciences, he said the problem is similar to losing engineering graduates seeking IIM post graduate pursuit “sometimes ending up selling cigarettes and soaps with lucrative emoluments.”

“One way would be to send out core engineers with a Diploma in Computer Sciences as well, IITs may consider shifting to dual degree programmes. AIIMS Delhi has already set up a strong IT department recognising the importance of IT in genetics health care,” he said.

An Indian Express Exclusive Story

https://indianexpress.com/article/education/iit-kharagpurs-first-batch-our-classes-were-held-in-where-freedom-fighters-were-locked-up-jeemain-2024-advanced-8969298/

Edited By : Poulami Mondal, Digital & Creative Media Executive (Creative Writer)Email: poulami.mondal@iitkgp.ac.in, media@iitkgp.ac.in, Ph. No.: +91-3222-282007

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IIT Kharagpur conducts a Press Conference on Strategic Implementation Initiatives undertaken by the Institute on NEP 2020

Under the aegis of commemorating the 3rd Anniversary of National Education Policy (NEP) 2020, IIT Kharagpur conducted a Press Conference on NEP 2020 on 24.07.2023 (Monday) at 11:00 am in Netaji Auditorium of the Institute. The press conference was chaired by Prof. V K Tewari, Director; Prof. Amit Patra, Deputy Director; Prof. M Ramgopal, Dean, FoEA and Shri Amit Jain, Registrar, IIT Kharagpur along with the senior Deans and Head of the Departments on the Strategic Implementation Initiatives on NEP 2020 undertaken at IIT Kharagpur.

IIT Kharagpur has reviewed and updated it curricula for UG Programmes for both the UG and the PG Programmes. During these revisions NEP 2020 has been kept in view and its visions incorporated into the programmes as appropriate in the context of the highly reputed technical and science education programmes of IIT Kharagpur. Some of the major strategic initiatives already undertaken by IIT Kharagpur, in the light of NEP 2020 has been a multidisciplinary research intensive university offering Science, Technology, Management and Law programmes. It is now initiating a new dimension of its multidisciplinarity by starting the MBBS programme in medicine at the B C Roy Institute of Medical Science and Technology. Education System in IIT Kharagpur always emphasised learning of humanities and other disciplines through electives. In the recent UG and PG curricula the choice of electives have been broadened enabling students to choose subjects from all over the institute. Further a new class of programmes called Interdisciplinary Dual Degree Programmes have been introduced in which a student can do a B. Tech and an M. Tech programme.

The UG programmes of IIT Kharagpur had 8 weeks of summer internship. This internship can now be extended to 8 months of research or industry internship for a student. Internship has also been proposed into the PG programme now. The Bachelor’s programme in Technology was already of 4 years. Now all Bachelor’s programmes in Science have also been converted to 4 year’s BS programmes. IIT Kharagpur has set up an International Student Office and is making all efforts to increase the admission of international students in its programmes. Each department will make strategic departmental Development Plans. On the basis of which department/centre/school will develop initiatives, assess their own progress, and reach the goals set therein, which could then become the basis for further funding from the Institute. To study Indian Languages, Art and Culture and quality research in the fields and its integration with engineering, science, humanity and social sciences research, the institute has also set up a Centre of Indian Knowledge System from which such initiative could be started for the interested students with support from the Ministry of Education.

The new 5 year BS-MS programmes offer options for an exit at the end of 4 years. It has also been recognised that students who have to leave for various personal reasons prematurely, from a UG programme after completing a substantial amount of credits shall benefit from an exit option that recognize the competencies gained by the student. Some other possible exit options are in discussion. Entry to UG and PG programmes at the IITs are through rigorous national level tests. It is generally felt that these need to be preserved to retain the standards of the IIT degrees. However, even with these there could be options for entry.

An Academic Bank of Credit shall be established which would digitally store the academic credits earned from various recognized Higher education Intuitions (HEIs) so that the degrees from an HEI can be awarded taking into account credits earned which would be undertaken under the national initiatives by the Ministry. IIT Kharagpur has contributed extensively to NPTEL which is now accepted for earning credits by several institutions of India which are also available globally. In the pandemic, IIT Kharagpur has conducted on-line classes for its own programmes extensively. IIT Kharagpur already has several initiatives for helping out economically deprived students at the national level under a Ministry of Education initiative.

Creation of an autonomous body National Educational Technology Forum (NETF) to provide a platform for the free exchange of ideas on the use of technology to enhance learning, assessment, planning, administration and appropriate integration of technology into all levels of education will be undertaken in the context of the NPTEL programmes and the Swayam platform established under NMEICT. All programmes, courses, curricula, and pedagogy across subjects, including those in-class, online, and in ODL modes as well as student support aims to achieve global standards of quality including its standardization and certification. Mechanism of the course/studies review in the department/centre/school on a regular basis by involving external and internal stakeholders/experts such as Industry, Alumni, Faculty, students, Academia, etc. are being strengthened through programmes like SPARK and GIAN. The new curricula emphasise on involvement of the Industry through projects and course participation.

On the lines of Strategic Implementation Initiatives of IIT Kharagpur on NEP 2020, Prof. V K Tewari, Director, IIT Kharagpur remarked, “NEP 2020’s inclusion in the academic curriculum will generate more employment based on the entrepreneurship model of being an employer than an employee. With the multiple entry/exit policy, any student can take a break from their respective courses to gain industry experience and come back to continue his academic curriculum. Another facet that enhances the flexibility of NEP 2020 is the Short Term Certification Courses for developing Short-term and Long-term Training Programs to provide skilling, re-skilling and upskilling opportunities. Learning Science in your own language removes the barrier of language bias and creates inclusivity between culture and technology. This adds value to the Indian education system to improve the universalization of education from pre-school to secondary level with 100% Gross Enrolment Ratio (GER) in school education by 2030.”

Media Coverage:

PTI Times of India India Today
The Hindu Business Line Ananda Bazar Patrika (Online) News 18 (English)
News 18 Bangla CNBC TV Dainik Jagran (Online)
IBC24 The Bengal Post Career 360
Free Press Journal  KGP   Edex Live
Times Now  Mirchi9 Jagran Josh
ABP Hindi (Online) Digital Learning Republic World
Campus Varta The Live Nagpur Mint
Deccan Herald  Education Times

News 18 Facebook Page – https://www.facebook.com/watch/?extid=WA-UNK-UNK-UNK-AN_GK0T-GK1C&mibextid=2Rb1fB&v=303445562357956

                                                                           

   ABP (Print)                                                            Bartaman                                                                Dainik Jagran (Print)

 

                         

                         Coalfield Mirror                                                                                             Medinipur Times 

Edited By : Poulami Mondal, Digital & Creative Media Executive (Creative Writer)
Email: poulami.mondal@iitkgp.ac.in, media@iitkgp.ac.in, Ph. No.: +91-3222-282007

Follow us on: Facebook – IIT Kharagpur; Twitter – @IITKgp;  Instagram – @iit.kgp; LinkedIn – Indian Institute of Technology
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The Yogic Avabodha – Atal

The word ‘Avabodha’ in Sanskrit is referred to someone who possess an awakened consciousness of soul. As the motto of the institute says Yogah Karmasu Kaushalam which means Excellence in Action is Yoga, we have an Alumnus who imbibed the thought as the basics of his existence. The spirit of a warrior, the body of iron and a heart of gold, yes we are talking about an explorer of life, Mr. Atal Agarwal, an alumnus of IIT Kharagpur, who graduated in 2017 and became one among the few IITians who represented Indian Institute of Technology (IIT) as an Alum in the prestigious title of Ironman athlete competition.

He finished the legendary race – one of the most challenging endurance athletics activities on earth that included swimming in open water – for 2.4 miles, biking for 112 miles, and running for 26.2 miles in a continuous series, all within a day without any halt. The Vice President of his batch, he taught himself how to swim last year after a near-to-death experience in Lake Tahoe. A philanthropist by nature, he went through a phase of depression and overcame it by taking on challenges in athletics.

An inspiration to all the Kgpians, his journey has been impeccable when it comes to the actual understanding of what you have to offer life rather than what life offers you. Atal’s mission is to take humanity to the 22nd century with the concerns and awareness as healthy beings and considers the health of humans to be his utmost priority.

He actively engages in activities about the physical, mental, spiritual, and financial aspects of the health of all humans and believes that the quality of human life can only be uplifted when all aspects of healthcare are integrated together, something he learned as an Indian, during his 25 years in India. Atal finished the race within 14 hrs and 43 mins during the Ironman Arizona. He is the only Ironman athlete who represented Indian Institute of Technology (IIT) in such a prestigious title.

He has been influential towards his Alma Mater with generous contributions and as keen practitioner of philanthropy. He recalls that his experiences mainly from his communities like IIT KGP and his surroundings in the BurningMan taught him how to live in adversities and be an artist. His interest in athletics have taught him how to endure pain without suffering. He has also biked more than 3200 miles in America this year covering a distance equivalent to California to New York. A free spirited explorer on Mother Earth who is living his life like a dream, is an inspiration to all of us. 

Social Media Links:

  1. Instagram: https://instagram.com/atalovesyou 
  2. LinkedIn: https://www.linkedin.com/in/atalovesyou 
  3. Blogs and Videos: https://atal.substack.com/ 
  4. Website: https://linktr.ee/atalovesyou 

By : Poulami Mondal, Digital & Creative Media Executive (Creative Writer)
Email: poulami.mondal@iitkgp.ac.in, media@iitkgp.ac.in, Ph. No.: +91-3222-282007

Follow us on: Facebook – IIT Kharagpur; Twitter – @IITKgp;  Instagram – @iit.kgp; LinkedIn – Indian Institute of Technology
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SIMULATING COVID-19 TRANSMISSION ON THE PARAMSHAKTI SUPERCOMPUTER

How do airborne diseases spread?

What happens when two people in close proximity talk?

How exactly does the air exchange take place?

To answer all these questions and many more on the spread of the COVID-19 pathogen,  Prof. Sandeep Saha of Aerospace Engineering, his students at the institute, and collaborators in CNRS, France, Imperial College, London, UK, and Princeton University, USA  have performed a high-end simulation to study the transmission patterns of the COVID-19 pathogen by using the Paramshaakti Supercomputer.

The Simulation

The study, which has now been published in The Journal Of Fluid Mechanics, observed airflow and exchange between two unmasked individuals at proximity having a face-to-face conversation, through fog flow visualization experiments and direct numerical simulations of colliding respiratory jets mimicking a short conversation.  It assesses the risk of transferring a high dose of the pathogen from an infected person to a susceptible person. 

According to Prof. Saha, the simulation tries to understand the spread of the virus in a post-vaccination scenario. He also pointed out that this is a crude estimation and that it has the potential for deeper and more complex research in the future.

What did the simulation reveal?

The study revealed that the vertical offset between the mouths of the speakers to be an important parameter governing the propagation and evolution of the respiratory jets.  A ‘blocking effect’ is observed at low offsets, which temporarily protects the susceptible speaker from the pathogen-loaded saliva droplets in the jet from the infected speaker. At large offsets, the interaction between the jets are minimum. In certain intermediate offsets, the jet entrainment and inhaled breath, assist the pathogen-containing jets to propagate towards the susceptible speaker’s mouth. The interaction of the respiratory jets, therefore, permits air exchange in a very short time to varying degrees depending upon the effectiveness of the blocking effect and jet entrainment.

Fighting the pandemic

The simulation was crucial in knowledge building about the spread of the virus. The results can be potentially used as part of public health guidelines to create awareness of the risks posed by unmasked conversations in close proximity. It reinforces the need for wearing masks as an effective means to minimize the spread of pathogens and thereby bringing down the infection rate. 

The future of the study

Prof. Saha and his team intend to bring in more complexity in the simulation. They aim to analyze more complicated situations and bring the study closer to reality. The inclusion of viral load metrics would add dynamism to the study.  He wants to further increase the scope of the study by exploring collaboration opportunities with epidemiologists and virologists.

Watch the simulation here.

Content Writer:- Arkaprabha Pal, Office of Alumni Affairs & Branding

Email: pal18arkaprabha@gmail.com

 

PAXgene for molecular diagnostics applications on oral pre-cancer and cancer tissues—described by IIT Kharagpur researchers for the first time in India

Recently, a scientific study has revealed the applicability of a new, non-toxic, formalin-free tissue fixation system PAXgene (QIAGEN-PreAnalytix, Germany) in studying oral pre-cancer/cancer biopsies with an aim to reduce processing damage incurred by conventional formalin-fixation and improve the quality of molecular pathology assays.

Dr. Pooja Lahiri, the Postdoctoral Fellow at School of Medical Science and Technology (SMST) and Professor Jyotirmoy Chatterjee, Head of SMST along-with senior authors, Professor Basudev Lahiri and Professor Shailendra K Varshney from Electronics and Electrical Communication Engineering at IIT Kharagpur , said —

“To the best of our knowledge, we are the first research group in India to demonstrate that PAXgene tissue fixation system can be implemented on oral cancer tissues for routine histological/ histopathological staining and diverse molecular pathology assays (i.e., immunohistochemistry and spectral-histopathology) without compromising on the quality of morphological and molecular attributes.”

PAXgene tissue fixation method has also ensured the preservation of several essential bio-components (nucleic acids, lipids, and proteins) as revealed by FTIR micro-spectroscopy.

“This information will save time in the clinics/medical institutes while collecting and processing the tissues for routine histology and molecular diagnostic purposes as a change in fixative for the preservation of key bio-molecules may no longer be necessary”, mentioned by Dr. Pooja Lahiri  and Prof. Chatterjee.

As medical decision-making moves toward personalised diagnostics by obtaining a broader spectrum of information from the same tissue, PAXgene tissue fixation system will help to improve the efficiency of molecular diagnosis. In terms of health and safety, PAXgene tissue fixation can also reduce the exposure of chemical carcinogens to the laboratory personnel, thereby improving the health index.

“We are currently looking for an active collaboration with medical institutes in India to test the efficiency of this non-toxic method in tissue archiving or bio-banking for variety of tissues”, added Prof. Chatterjee.

The research findings have been published in the Biomolecules journal by MDPI publishers (https://doi.org/10.3390/biom11060889) on June 15, 2021.

This work was conceptualized by Dr. Pooja Lahiri and was primarily evolved for oral onco-pathology studies in the laboratory of Prof. Jyotirmoy Chatterjee at SMST along with contributions from lab members — Dr. Suranjana Mukherjee, DST Women Scientist and Dr. Biswajoy Ghosh, Scientific Project Officer.

The other significant senior-authors of this paper are Prof. Basudev Lahiri and Prof. Shailendra K Varshney from the Department of Electronics and Electrical Communication Engineering, IIT Kharagpur – who has provided their support to characterize the PAXgene system using advanced FTIR-microspectroscope.

The senior oral onco-pathologists, Prof. Emeritus Ranjan Rashmi Paul and Prof. Mousumi Pal have validated the pathological efficacy of PAXgene system on oral tissues. Prof. Paul is the Director of Research, Department of Oral and Dental Sciences, JIS University, Kolkata and Prof Pal is the HoD of Department of Oral and Maxillofacial Pathology at the Guru Nanak Institute of Dental Sciences and Research, Kolkata.

*The PAXgene fixative was first developed by Qiagen- PreAnalytix, Germany.(https://www.qiagen.com/us/paxgene-tissue-fix-container).

** Certain excerpts for this post were taken from the original paper and reused under an open access Creative Commons CC BY 4.0 license.

***Dr. Lahiri would like to acknowledge the postdoctoral funding by IIT Kharagpur for partly funding this study. All the authors would like to further acknowledge the SERB-CRG (CRG/2020/002687) funding for funding this pre-analytical study.

Media contact: Prof. Jyotirmoy Chatterjee, Head and Professor, School of Medical Science and Technology

Email:  jchatterjee@smst.iitkgp.ac.in,  Ph no.: +91-3222-282302

 

Contact: Paramita Dey, Junior Assistant

Email: media@iitkgp.ac.in, Ph. No.: +91-3222-282004

 

Shocked Indian meteorites provide clues to Earth’s inaccessible lower mantle

The team of researchers from IIT Kharagpur along with its collaborators have completed a set of complex analyses of the shocked Indian Kamargaon meteorite, sucked by Earth’s Gravity.

In a recent study, a team of researchers from Indian Institute of Technology Kharagpur analysed a shocked meteorite called Kamargaon, fell on November 13, 2015, near the town of Kamargaon, located 27 km away from the Golaghat district of Assam, India. The scientists classified it as a chrondite, a variety of stony meteorite.

In this study, the detailed investigations were carried out by Prof. Sujoy Ghosh and his student, Kishan Tiwari from the Department of Geology and Geophysics of IIT Kharagpur along with the collaborators, Prof. Massaki Miyahara from Hirosima University, Japan and Prof. Dwijesh Ray from Physical Research Laboratory, Ahmedabad. The research findings were published in Geophysical Research Letters of Advancing Earth and Space Science on June 8, 2021 (https://doi.org/10.1029/2021GL093592).

One of the authors this paper, Prof Sujoy Ghosh explained, “This particular kind of meteorite is found in the asteroid belt — formed by accumulation of solid particles during the formation of planets — located between the orbits of Jupiter and Mars. These materials are at times pulled out from the belt due to collision and gravitational forces. These meteorites have survived high-pressure and high-temperature events during their formation and fall on Earth due to the planet’s gravitational pull”.

The Kamargaon meteorite is constituted by several rock-forming minerals, where Olivine is the most abundant. Olivine is considered as an important mineral, found in Earth’s lower mantle. It breaks down into bridgemanite and magnesiowustite in the Earth’s lower mantle which is one of the most important reactions that largely controls the physical and chemical properties of the Earth’s interior.

 This is for the time that researchers have found compositions in a meteorite, when olivine is melted at high temperature and pressures, confirming that the chemical found in the mantle is also present in the asteroid belt.

 “Further, the results suggested that the incongruent melting of olivine may possibly operate as one of the alternative mechanisms of dissociation reaction driving the phase transformation of olivine in the natural systems’, said Kishan Tewari, research scholar of IIT Kharagpur.

Media Contact: Prof Sujoy Ghosh, Assistant Professor

Email: sujoy.ghosh@gg.iitkgp.ac.in, Ph. No.:  +91-3222-283364

Contact: Paramita Dey, Junior Assistant

Email: media@iitkgp.ac.in, Ph. No.: +91-3222-282004

IIT Kharagpur unveiled the increasing ozone pollution in Antarctica

IIT Kharagpur researchers revealed significant increase of ozone pollution in the Antarctic troposphere for the past 25 years, which is a concern as the region is far from the industries and continental emission sources.

A recent scientific study analysed the significant increase of Surface Ozone and Tropospheric Ozone in Antarctica for the past 25 years. The research findings were supported by surface-based and ozonesonde measurements in Antarctica.

“The increasing trend in ozone pollution across Antarctica would have a profound impact on the future climate of one of the most climate-sensitive regions on the Earth, as tropospheric ozone has warming feedback to the Earth’s climate, and that can accelerate melting of sea-ice, changes in water masses, and damages to the ecosystem”, said Prof Jayanarayanan Kuttippurath, the lead researcher and Assistant Professor of Centre for Oceans, Rivers, Atmosphere, and Land sciences at IIT Kharagpur.

 The research findings are published in Environmental Science and Technology Journal of the American Chemical Society (https://doi.org/10.1021/acs.est.0c08491) on June 16, 2021. In this regards, American Chemical Society made the press release on the same date (https://www.acs.org/content/acs/en/pressroom/presspacs/2021/acs-presspac-june-16-2021/ozone-pollution-has-increased-in-antartica.html).

The increasing pollution in a remote region with no industries, no significant population, very limited anthropogenic activities and about 6500 km away from the equator, is a serious concern and suggests substantial anthropogenic pollution across the latitudes.  Dominant sources of ozone are both natural and from human-related sources. The researchers compiled the ozone data measured between 1992 and 2018 at ground level and through the atmosphere, from the lower atmosphere into the ozone layer, at eight stations across Antarctica.

“Making measurements and monitoring the environment at remote locations such as Antarctica is very important because of its remoteness and constant clean air there making it easier to detect even slight changes related to global scale, and thus can expose first signals of global change”, added Prof Virendra Kumar Tewari, the IIT Kharagpur Director.

 

“The increasing trend in ozone pollution is significant even after accounting for the natural variability, and we find substantial amounts of ozone pollution is being transported from neighbouring regions,” said Mr. Pankaj Kumar, the research scholar from the Centre of Oceans, Rivers, Atmosphere and Land Science of IIT Kharagpur as well as the another lead author of the paper.

The authors acknowledged the Department of Science and Technology (DST), Ministry of Education (MoE), and Ministry of Earth Science (MoES) for facilitating the study. They also thanked Dr M Ravichandran, the Director of National Centre for Ocean and Polar Research Goa, India for his encouragement and support for this study.

Media Contact: Prof Jayanarayanan Kuttippurath, Assistant Professor

Email: jayan@coral.iitkgp.ac.in, Ph. no.: +91-9475472847

Contact: Paramita Dey, Junior Assistant

Email: media@iitkgp.ac.in, Ph. No.: +91-3222-282004

 

Bonobo’s several interesting facts have paved the way to the solution of the optimization problem

Prof. Dilip Kumar Pratihar along with his student Mr. Amit Kumar Das from the Department of Mechanical Engineering of IIT Kharagpur has proposed an intelligent and adaptive metaheuristic optimization algorithm, namely “BONOBO OPTIMIZER (BO)” to solve the complex optimization problems, being inspired from the social behavior and reproductive strategies of bonobos.

BO uses a unique and adaptive selection scheme, namely fission-fusion technique for selecting the mating bonobo, which has made the algorithm intelligent, robust and good performer. It is an intelligent and adaptive heuristic with self-adjusting controlling parameters. It is able to maintain a good balance between exploration and exploitation phenomena. In addition, BO is found to be computationally less expensive compared to the other popular metaheuristic techniques available in the literature

“These features of BO attract the researchers to use BO instead of the state-of-the-art algorithms. Further, the researchers from our institute and other institutes in India as well as abroad, have already started using BO, after its computer codes are made public by us for its single-objective and multi-objective optimization versions. BO has been designed in such a manner that it is capable of handling a variety of objective functions efficiently”, said Prof. Dilip Kumar Pratihar, one of the authors of the study.

The natured-inspired algorithm is also applicable to solve a variety of problems related to Engineering Science, General Science as well as Arts. The study has been published by IEEE and Springer. Recently, the optimization tool has been registered for copyright protection.

“Our researchers have examined the performance of proposed BO on a set of twenty optimization problems with varying attributes and the outcome of the experiment clearly proves that BO holds superior performances compared to other commonly used metaheuristics, such as Genetic Algorithms (GA) and Particle Swarm Optimization (PSO), reported in the literature.”, said Prof. Virendra Kumar Tewari, the Director of IIT Kharagpur.

Media Contact: Prof Dilip Kumar Pratihar, Professor, Email: dkpra@mech.iitkgp.ac.in, +91-3222-282992

Contact: Paramita Dey, Junior Assistant

Email: media@iitkgp.ac.in, Ph. No.: +91-3222-282004

Worldwide increase in extreme precipitation: A manifestation of climate change

Since the 1970s, global climate change and consequent warming of atmospheric system have led to a significant increase in extreme precipitation across the world, revealed by the IIT Kharagpur researchers through a global analysis.

“The global climate change and consequent warming of atmospheric system have altered the regular spatio-temporal distribution of precipitation. Our researchers also found that, the extent of increase in precipitation extremes is comparatively less near equator and reaches peak around mid-latitudes.”, mentioned the lead researcher, Prof Rajib Maity, Department of Civil Engineering.

The researchers have considered gridded observational- reanalysis precipitation dataset (1948-2012) and two important extreme precipitation measures from hydrological design and planning point of view, namely Annual Maximum Daily Precipitation (AMDP) & Probable Maximum Precipitation (PMP). The research finding has been published in the Science Reports journal by Nature Publishing Group.

“Globally, the importance of AMDP and PMP is hydrologic planning and design is enormous. It ranges from flood assessment studies to design to high-risk high-cost water-energy infrastructures such as, dams, drainage network, flood management structures and even nuclear power plants.”, added Prof Maity.

“Intensification of precipitation extremes has resulted in substantial increase in Europe, North America and Northern Asia. Furthermore, the researchers have observed a similar increasing pattern in India, especially in the Southern peninsula, in contrast to the Northern Gangetic plain.”, said Prof Virendra Kumar Tewari, the Director of IIT Kharagpur.

AMDP is reported to increase for almost two-third of the global land area. The variability of AMDP is found to increase more than its mean that eventually results in increase PMP almost worldwide. Continent-wise, such increase in AMDP and PMP is true for all continents except some parts of Africa. The zone-wise analysis (dividing the globe into nine zones with uniform precipitation characteristics) reveals that zones of ‘moderate precipitation’ and ‘moderate seasonality’ exhibit the maximum increases in PMP.

“Recent increased in pole-ward heat and moisture transport as a result of Arctic Amplification (AA) may be associated with such mid-latitude intensification of precipitation extremes in the Northern hemisphere”, added Subharthi Sarkar, working under the guidance of Prof Rajib Maity as a Ph.D. Scholar.

Media Contact: Prof Rajib Maity, Associate Professor, Email: rajib@civil.iitkgp.ac.in,  Ph:.+91-3222-283442

Contact: Paramita Dey, Junior Assistant

Email: media@iitkgp.ac.in, Ph. No.: +91-3222-282004

A new approach for direct visualization of nanoscale waterways in rocks using the Atomic Force Microscope and its consequence on water percolation

The researchers use Atomic Force Microscope to directly observe the width and the physical nature of grain boundary domains in rocks on the nanoscale for the first time and this study is among very few in the world that have applied this technique to geological samples, and the first of its kind in India.

In a recent study, a team of researchers led by Prof Saibal Gupta, Professor of Geology and Geophysics Department and Prof Rabibrata Mukherjee, Professor of Chemical Engineering Department along with the research scholars Ritabrata Dobe and Anuja Das from the Department of Geology & Geophysics and Chemical Engineering respectively, for the first time, have corroborated that systematic changes in grain boundary morphology in quartzite samples metamorphosed at different metamorphic grades can be directly visualized using Atomic Force Microscopy (AFM) which allows comparatively easy, high magnification imaging and precise width measurements. The research has been published in the reputed journal Scientific Reports, published by Nature publishing group.

 “The results of the study show that quartzites deformed and metamorphosed at lower grades have wider grain boundaries with voids along the channels and at triple junctions and a much lower proportion of bridges compared to those that are deformed at higher grades. The latter have narrower channels, no voids along these channels, and an abundance of periodically arranged bridges oriented at right angles to the length of the boundary”, said Prof Gupta. “This study also reveals that grain boundary character changes with metamorphic temperature, thereby controlling the extent of water percolation through quartz-bearing rock in the Earth’s crust at depth”.

Prof. Gupta and his Ph.D. student Ritabrata Dobe were grappling with a problem that has fascinated geologists for some time – what makes water percolate more easily through some rocks in the Earth’s continental crust compared to others? Hydrous fluids play a vital role in the chemical and rheological evolution of ductile, quartz-bearing continental crust, where fluid percolation pathways are controlled by grain boundary domains. They took a cue from studies conducted in the metallurgical and material sciences, where it is well known that fluid percolation leads to corrosion or cracking; to circumvent these effects, attempts are made to impart certain beneficial characteristics to the grain boundary network. They decided to try out this idea on natural quartz-rich rocks.

“We suggest that the strength of grain boundary domains is higher in high grade metamorphic rocks compared to lower metamorphic grade rocks, and together with the other grain boundary features, contribute to enhanced resistance to fluid percolation in granulite facies quartzites compared to those metamorphosed under greenschist facies conditions”, said Ritabrata Dobe, Research Scholar working with Prof. Saibal Gupta.

In this study, at the beginning, the researchers have used the standard petrological microscope, and then the Electron Backscatter Diffraction (EBSD) to characterize the grain boundary domains. While EBSD routinely identifies the trace of the boundary on micron-scale, it does not reveal its precise width or morphology. And unless the grain boundaries could be observed at very high magnifications (at nano-scale), they could not actually visualizing what happens. Existing techniques – optical microscopy and EBSD, could not reveal what could happen at those scales.

And so, they decided to talk to Prof. Rabibrata Mukherjee, who is an expert in Atomic Force Microscopy and routinely uses the technique for their work on nano-patterning of soft materials and surfaces at the “Instability and Soft Patterning” laboratory at the Dept. of Chemical Engineering at IIT Kharagpur. His group been using this technique on various systems materials as a part of their research.

“To resolve the geological problem brought to our notice, we decided to use the Atomic Force Microscope (AFM) which is among very few examples of using this highly sophisticated microscopy technique to an earth science related problem. This enables direct nano-scale imaging of the grain boundary – something that cannot be done using any technique other than Transmission Electron Microscopy (TEM), which is a destructive technique- in the sense that thin slices of the samples have to be generated for analysis”, mentioned Prof Rabibrata Mukherjee.

Also, a technique called Force-Distance Spectroscopy has been applied for the first time to the geological samples, to estimate the variations in strength of grain boundary domains and grain interiors within quartzites deformed at different metamorphic conditions.

“The results of FD spectroscopy demonstrate that high grade rocks are in general significantly less deformable compared to low grade rocks. Also, grain boundary domains containing bridges across them are less deformable compared to segments along which bridges are absent. Also, it was extremely interesting to do FD spectroscopy on rock samples, as there was absolutely no literature data”, said Anuja Das, Research Scholar working with Prof. Mukherjee and is already an expert in AFM imaging.

Geologists have been investigating what makes some rocks more or less permeable than others, especially at different depths in the Earth’s crust, where we know that temperature increases with depth from the surface. Thus, the samples on which the experiments were carried out correspond to a range of temperature conditions experienced by rocks in the Earth’s crust. What they found is that rocks that had experienced higher temperatures were less permeable than those heated to lower temperatures. This indicated that water would find it difficult to percolate through hot rocks near the base of the continental crust.

The lead researchers, Prof. Gupta and Prof. Mukherjee, emphasized that “Apart from the scientific problem addressed, the novelty of the study lies in the completely new approach used, and suggest that this may well become a much more widely used technique in future geological studies for revealing various hitherto unknown details at the nano-scale, apart from the structure, morphology and strength of grain boundaries in rocks”. Prof Mukherjee further added “it is a classic example of what collaboration can do, as the individual components of the work were easy and routine for both the groups, but the collective outcome is non-trivial”. Prof Gupta was extremely satisfied to have developed a new technique entirely based on research in-house research at IIT Kharagpur. 

Media Contact: Prof Saibal Gupta, Professor, Email: saibl@gg.iitkgp.ac.in, Ph.: +91- 3222- 283370

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Email: media@iitkgp.ac.in, +91-3222-282004