INDIAN INSTITUTE OF SCIENCE EDUCATION AND RESEARCH KOLKATA

... towards excellence in science

An Autonomous Institution, Under the Ministry of Education, Government of India

Faculty Members

Soumitro Banerjee
Director, Professor
Department:Physical Sciences
Research Area:Nonlinear dynamics
Email:soumitro [AT] iiserkol.ac.in

Alakesh Bisai
Professor
Department:Chemical Sciences
Research Area:Catalysis, Synthetic Methodology, Total syntheses of Natural Products
Email:alakesh [AT] iiserkol.ac.in

Amirul Islam Mallick
Associate Professor
Department:Biological Sciences
Research Area:Host-pathogen interaction, Molecular Immunology and Microbial Ecology
Email:amallick [AT] iiserkol.ac.in

Amit Ghosal
Professor
Department:Physical Sciences
Research Area:Physics
Email:ghosal [AT] iiserkol.ac.in

Amit Kumar Mandal
Associate Professor
Department:Biological Sciences
Research Area:Molecular Medicine - Structural proteomics and imaging of clinically important molecules in human tissues
Email:amitkm [AT] iiserkol.ac.in

Amitava Das
Professor
Department:Chemical Sciences
Research Area:Chemical Science
Email:amitava [AT] iiserkol.ac.in

Amlan K Roy
Professor
Department:Chemical Sciences
Research Area:Theoretical Chemistry
Email:akroy [AT] iiserkol.ac.in

Ananda Dasgupta
Associate Professor
Department:Physical Sciences
Research Area:Quantum Phenomena
Email:adg [AT] iiserkol.ac.in

Anandamohan Ghosh
Associate Professor
Department:Physical Sciences
Research Area:Non-linear dynamics; mathematical and theoretical biology
Email:anandamohan [AT] iiserkol.ac.in

Anindita Bhadra
Associate Professor
Department:Biological Sciences
Research Area:Animal behaviour, ecology and evolution
Email:abhadra [AT] iiserkol.ac.in

Anirban Banerjee
Associate Professor
Department:Mathematics and Statistics
Research Area:Spectral graph and hypergraph theory, Structure and evolution of biological networks, Human brain functional networks
Email:anirban.banerjee [AT] iiserkol.ac.in

Anirvan Chakraborty
Assistant Professor
Department:Mathematics and Statistics
Research Area:Functional and infinite dimensional dataNon-parametric and robust statisticsStochastic processesData depth
Email:anirvan.c [AT] iiserkol.ac.in

Annagiri Sumana
Professor
Department:Biological Sciences
Research Area:Behaviour and Ecology
Email:sumana [AT] iiserkol.ac.in

Anuradha Bhat
Associate Professor
Department:Biological Sciences
Research Area:Behavioural Ecology, Biodiversity, Conservation, Freshwater ecology
Email:anuradhabhat [AT] iiserkol.ac.in

Arindam Kundagrami
Associate Professor
Department:Physical Sciences
Research Area:Soft Condensed Matter Physics; Polymer Physics; Polyelectrolyte Physics
Email:arindam [AT] iiserkol.ac.in

Arindam Mukherjee
Professor
Department:Chemical Sciences
Research Area:nitrogen mustards; anticancer agents; kinase inhibitors; ATP7B transport of metal drugs
Email:a.mukherjee [AT] iiserkol.ac.in

Arjun Paul
Assistant Professor
Department:Mathematics and Statistics
Research Area:Algebraic Geometry
Email:arjun.paul [AT] iiserkol.ac.in

Arnab Gupta
Associate Professor
Department:Biological Sciences
Research Area:Cell biology, membrane trafficking, eukaryotic copper metabolism.
Email:arnab.gupta [AT] iiserkol.ac.in

Ashwani Kumar Tiwari
Professor
Department:Chemical Sciences
Research Area:Theoretical Reaction Dynamics
Email:ashwani [AT] iiserkol.ac.in

Asok Kumar Nanda
Professor
Department:Mathematics and Statistics
Research Area:Reliabillity, Statistics
Email:asok [AT] iiserkol.ac.in

Ayan Banerjee
Professor
Department:Physical Sciences
Research Area:Optics and photonics, spectroscopy
Email:ayan [AT] iiserkol.ac.in

Babu Sudhamalla
Assistant Professor
Department:Biological Sciences
Research Area:Epigenetics, Chromatin biology, and Regulation of gene expression
Email:s.babu [AT] iiserkol.ac.in

Balaram Mukhopadhyay
Professor
Department:Chemical Sciences
Research Area:Synthetic Organic Chemistry (Carbohydrate), Glyco-nanotechnology
Email:mbalaram [AT] iiserkol.ac.in

Bhavtosh Bansal
Professor
Department:Physical Sciences
Research Area:Condensed Matter Physics (Experimental)
Email:bhavtosh [AT] iiserkol.ac.in

Bheemalingam Chittari
Assistant Professor
Department:Physical Sciences
Research Area:Quantum Theory of Functional Materials
Email:bheemalingam [AT] iiserkol.ac.in

Bidisha Sinha
Associate Professor
Department:Biological Sciences
Research Area:Cell Biophysics
Email:bidisha.sinha [AT] iiserkol.ac.in

Biplab Maji
Associate Professor
Department:Chemical Sciences
Research Area:Organic synthesis, catalysis and physical organic chemistry
Email:bm [AT] iiserkol.ac.in

Bipul Pal
Professor
Department:Physical Sciences
Research Area:Ultrafast optical spectroscopy, Carrier dynamics in semiconductors, Nonlinear optical phenomena
Email:bipul [AT] iiserkol.ac.in

Biswarup Mukhopadhyaya
Professor
Department:Physical Sciences
Email:biswarup [AT] iiserkol.ac.in

Chilla Malla Reddy
Professor (On Lien)
Department:Chemical Sciences
Research Area:Supramolecular Chemistry, Crystal Engineering, Pharmaceutical Crystallography
Email:cmreddy [AT] iiserkol.ac.in

Chiranjib Mitra
Professor
Department:Physical Sciences
Research Area:Quantum Information Processing, Quantum Magnetism, Strongly Correlated Electron Systems and Magnetooptics
Email:chiranjib [AT] iiserkol.ac.in

Debabrata Mukherjee
Assistant Professor
Department:Chemical Sciences
Research Area:Inorganic and organometallic chemistry
Email:d.mukherjee [AT] iiserkol.ac.in

Debansu Chaudhuri
Associate Professor
Department:Chemical Sciences
Research Area:Organic Semiconductors
Email:dchaudhuri [AT] iiserkol.ac.in

Debasis Koley
Professor
Department:Chemical Sciences
Research Area:Computational Chemistry
Email:koley [AT] iiserkol.ac.in

Debasish Haldar
Professor
Department:Chemical Sciences
Research Area:SupraMolecular Bio Organic Chemistry
Email:deba_h76 [AT] iiserkol.ac.in

Devarajulu Sureshkumar
Associate Professor
Department:Chemical Sciences
Research Area:C-H bond activation, Asymmetric metal and organocatalysis, Asymmetric Halofunctionalization of Olefins, Visible Light Photocatalysis
Email:suresh [AT] iiserkol.ac.in

Dhananjay Nandi
Professor
Department:Physical Sciences
Research Area:Low energy electron-molecule collisions, Photoelectron-Photoion Imaging Spectroscopy, Surface Science
Email:dhananjay [AT] iiserkol.ac.in

Dibyendu Das
Associate Professor
Department:Chemical Sciences
Research Area:Systems Chemistry, Organic Materials, Peptide Nanomaterials, Chemical Evolution
Email:dasd [AT] iiserkol.ac.in

Dibyendu Nandi
Professor
Department:Physical Sciences
Research Area:Astrophysical Magnetohydrodynamics, Sun-Earth-System Science, Space Science
Email:dnandi [AT] iiserkol.ac.in

Dipjyoti Das
Assistant Professor
Department:Biological Sciences
Research Area:Theoretical and computational biophysics, Stochastic processes in biology
Email:dipjyoti.das [AT] iiserkol.ac.in

Dwaipayan Roy
Assistant Professor
Department:Computational and Data Sciences
Research Area:Information and data retrieval
Email:dwaipayan.roy [AT] iiserkol.ac.in

Gaurav Shukla
Assistant Professor
Department:Earth Sciences
Research Area:Computational Mineral Physics
Email:gshukla [AT] iiserkol.ac.in

Golam Mortuza Hossain
Associate Professor
Department:Physical Sciences
Research Area:Gravitation and Cosmology (Classical and Quantum)
Email:ghossain [AT] iiserkol.ac.in

Gopala Krishna Darbha
Associate Professor
Department:Earth Sciences
Research Area:Applied environmental Chemistry, Water and soil pollution, Environmental hydrogeochemistry, Waste management
Email:gkdarbha [AT] iiserkol.ac.in

Goutam Dev Mukherjee
Professor
Department:Physical Sciences
Research Area:Experimental Condensed Matter Physics
Email:goutamdev [AT] iiserkol.ac.in

Jayasri Das Sarma
Professor
Department:Biological Sciences
Research Area:Neural Cell Biology, Neuro Science
Email:dassarmaj [AT] iiserkol.ac.in

Kajaljyoti Borah
Associate Professor
Department:Earth Sciences
Research Area:Computational Seismology, Mathematical modelling
Email:kajal.borah [AT] iiserkol.ac.in

Kamaraju Natarajan
Associate Professor
Department:Physical Sciences
Research Area:Ultrafast Spectroscopy, THz Spectroscopy, THz Metamaterials, Nonlinear Optics/THz
Email:nkamaraju [AT] iiserkol.ac.in

Kathakali Bhattacharyya
Associate Professor
Department:Earth Sciences
Research Area:Structural Geology
Email:kathakali [AT] iiserkol.ac.in

Koel Das
Associate Professor
Department:Mathematics and Statistics
Research Area:Cognitive Neuroscience
Email:koel.das [AT] iiserkol.ac.in

Koushik Dutta
Associate Professor
Department:Physical Sciences
Research Area:Cosmology and Its Connections to Particle Physics
Email:koushik [AT] iiserkol.ac.in

Kripabandhu Ghosh
Assistant Professor
Department:Computational and Data Sciences
Research Area:Information Retrieval, Data Mining, Machine Learning, Natural Language Processing
Email:kripaghosh [AT] iiserkol.ac.in

Malancha Ta
Associate Professor
Department:Biological Sciences
Research Area:Stem cell biology
Email:malancha.ta [AT] iiserkol.ac.in

Manoj Kumar Jaiswal
Associate Professor
Department:Earth Sciences
Research Area:Late Quaternary Geochronology, Earth Surface Processes and Palaeoclimate
Email:manoj [AT] iiserkol.ac.in

Md. Ali Zinna
Associate Professor
Department:Mathematics and Statistics
Research Area:Commutative Algebra
Email:zinna [AT] iiserkol.ac.in

Mohit Prasad
Professor
Department:Biological Sciences
Research Area:Cell and developmental Biology
Email:mohitprasad [AT] iiserkol.ac.in

Mousumi Das
Associate Professor
Department:Chemical Sciences
Research Area:Theoretical and Computational Chemistry
Email:mousumi [AT] iiserkol.ac.in

Narayan Banerjee
Professor
Department:Physical Sciences
Research Area:Gravitation & Cosmology
Email:narayan [AT] iiserkol.ac.in

Neelanjana Sengupta
Associate Professor
Department:Biological Sciences
Research Area:Computational biophysics
Email:n.sengupta [AT] iiserkol.ac.in

Nirmalya Ghosh
Professor
Department:Physical Sciences
Research Area:Optical Physics, Plasmonics and nano optics, Polarization optics, Weak measurements, Biophotonics
Email:nghosh [AT] iiserkol.ac.in

Partha Mitra
Assistant Professor
Department:Physical Sciences
Research Area:Magnetism in mesoscopic systems and spintronics application
Email:pmitra [AT] iiserkol.ac.in

Partha Pratim Datta
Associate Professor
Department:Biological Sciences
Research Area:Molecular Biology, Microbiology, Structural Biology (cryo-EM), Computation
Email:partha_datta [AT] iiserkol.ac.in

Partho Sarothi Ray
Associate Professor
Department:Biological Sciences
Research Area:Molecular Biology, Translational Control, RNA-Protein Interaction
Email:psray [AT] iiserkol.ac.in

Pradeep Kumar Mohanty
Professor
Department:Physical Sciences
Research Area:Nonequilibrium Statistical Physics
Email:pkmohanty [AT] iiserkol.ac.in

Pradip Kumar Ghorai
Professor
Department:Chemical Sciences
Research Area:Computational and Theoretical Chemistry
Email:pradip [AT] iiserkol.ac.in

Pradip Kumar Tarafdar
Associate Professor
Department:Chemical Sciences
Research Area:Medicinal Chemistry, Supramolecular Chemistry
Email:tarafdar [AT] iiserkol.ac.in

Pradipta Purkayastha
Professor
Department:Chemical Sciences
Research Area:Photophysics, Spectroscopy, Nanosciences, Nanomedicines
Email:ppurkayastha [AT] iiserkol.ac.in

Prasanta Sanyal
Professor
Department:Earth Sciences
Research Area:Paleoclimatology,Paleomonsoon, Paleoecology, River Response to Climate
Email:psanyal [AT] iiserkol.ac.in

Prasun Kumar Mandal
Professor
Department:Chemical Sciences
Research Area:Single Molecule Spectroscopy, Microscopy and Ultrafast Fluorescence Dynamics of Chemical, Biological and Material systems
Email:prasunchem [AT] iiserkol.ac.in

Priyadarshi De
Professor
Department:Chemical Sciences
Research Area:Polymer Chemistry
Email:p_de [AT] iiserkol.ac.in

Punyasloke Bhadury
Professor
Department:Biological Sciences
Research Area:Microbial ecology from freshwater to coastal ocean, Antimicrobial therapeutics, Sustainable technologies for ecological restoration, Blue economy
Email:pbhadury [AT] iiserkol.ac.in

Radhika Venkatesan
Assistant Professor
Department:Biological Sciences
Research Area:Chemical Ecology, Bioorganic Chemistry, Analytical Chemistry
Email:rv [AT] iiserkol.ac.in

Rahul Banerjee
Professor
Department:Chemical Sciences
Research Area:Hydrogen Storage and Carbon Dioxide Sequestration in Metal OrganicFrameworks
Email:r.banerjee [AT] iiserkol.ac.in

Rahul Das
Associate Professor
Department:Biological Sciences
Research Area:Cell Signaling and Biomolecular NMR Spectroscopy
Email:rahul.das [AT] iiserkol.ac.in

Raja Shunmugam
Professor
Department:Chemical Sciences
Research Area:Polymer Chemistry
Email:sraja [AT] iiserkol.ac.in

Rajesh Kumble Nayak
Professor
Department:Physical Sciences
Research Area:Astrophysics, Physics
Email:rajesh [AT] iiserkol.ac.in

Rajib Dutta
Assistant Professor
Department:Mathematics and Statistics
Research Area:Numerical Analysis of PDEs, Hyperbolic Conservation Laws, Nonlinear Dispersive Equations, Linear and Nonlinear Partial Differential Equations
Email:rajib.dutta [AT] iiserkol.ac.in

Rangeet Bhattacharyya
Professor
Department:Physical Sciences
Research Area:Non-equilibrium Quantum Dynamics, Open Quantum Systems, NMR
Email:rangeet [AT] iiserkol.ac.in

Ratheesh K Vijayaraghavan
Associate Professor
Department:Chemical Sciences
Research Area:Organic Semiconductor, Semiconductor Devices, Spectroscopy
Email:ratheesh [AT] iiserkol.ac.in

Ritesh K. Singh
Associate Professor
Department:Physical Sciences
Research Area:High Energy Physics
Email:ritesh.singh [AT] iiserkol.ac.in

Rituparna Sinha Roy
Associate Professor
Department:Biological Sciences
Research Area:Peptide based therapeutics,cancer nanomedicine, regenerative nanomedicine, translational biophysics, drug delivery, chemical biology, cancer biology
Email:rituparna [AT] iiserkol.ac.in

Robert John Chandran
Associate Professor
Department:Biological Sciences
Research Area:Tropical Forest Ecology, Grassland Ecology, Plant Ecophysiology, Climate Change and Biodiversity, Wildlife and Habitat Management, Conservation
Email:robert.john [AT] iiserkol.ac.in

Rumi De
Associate Professor
Department:Physical Sciences
Research Area:Theoretical Biological Physics; Nonlinear Dynamics; Statistical Physics; Soft Condensed Matter;
Email:rumi.de [AT] iiserkol.ac.in

Rupak Datta
Professor
Department:Biological Sciences
Research Area:Lysosome Biology & Related Diseases
Email:rupakdatta [AT] iiserkol.ac.in

S Gangappa
Assistant Professor
Department:Biological Sciences
Research Area:Broad area: Plant Molecular and Developmental Biology, Thermosensory signaling mechanisms, Temperature and light signaling cross-talk, Plant Epigenetics, Plant Biotechnology.
Email:ngsreeram [AT] iiserkol.ac.in

Sangita Sen
Assistant Professor
Department:Chemical Sciences
Research Area:Theoretical and Computational Chemistry
Email:sangita.sen [AT] iiserkol.ac.in

Sanjay Kumar Mandal
Assistant Professor
Department:Earth Sciences
Research Area:Tectonic Geomorphology
Email:sanjaykm [AT] iiserkol.ac.in

Sanjio S. Zade
Professor
Department:Chemical Sciences
Research Area:Conjugated Polymers, Conjugated Macrocycles, Conjugated Small Molecules
Email:sanjiozade [AT] iiserkol.ac.in

Sankar Maiti
Associate Professor
Department:Biological Sciences
Research Area:Cell Biology Neurobiology
Email:spm [AT] iiserkol.ac.in

Satyabrata Raj
Professor
Department:Physical Sciences
Research Area:Condensed Matter (Experiment)
Email:raj [AT] iiserkol.ac.in

Satyaki Mazumder
Assistant Professor
Department:Mathematics and Statistics
Research Area:Statistics
Email:satyaki [AT] iiserkol.ac.in

Saugata Bandyopadhyay
Associate Professor
Department:Mathematics and Statistics
Research Area:Calculus of Variations,Differential Inclusions and Partial Differential Equations
Email:saugata.bandyopadhyay [AT] iiserkol.ac.in

Sayam Sen Gupta
Professor
Department:Chemical Sciences
Research Area:Bio-Inspired Catalysis and Materials, Sustainable Chemistry
Email:sayam.sengupta [AT] iiserkol.ac.in

Sayan Bagchi
Assistant Professor
Department:Mathematics and Statistics
Research Area:Harmonic Analysis
Email:sayan.bagchi [AT] iiserkol.ac.in

Sayan Bhattacharyya
Professor
Department:Chemical Sciences
Research Area:Solid State Chemistry and Nanoscience for Energy
Email:sayanb [AT] iiserkol.ac.in

Shibananda Biswas
Associate Professor
Department:Mathematics and Statistics
Research Area:Operator Theory
Email:shibananda [AT] iiserkol.ac.in

Shirshendu Chowdhury
Assistant Professor
Department:Mathematics and Statistics
Research Area:Partial Differential Equations, Fluid Mechanics, Control Theory.
Email:shirshendu [AT] iiserkol.ac.in

Siddhartha Lal
Associate Professor
Department:Physical Sciences
Research Area:emergent phenomena in low-dimensional quantum systems, strongly correlated electron systems, quantum magnetism, quantum transport
Email:slal [AT] iiserkol.ac.in

Somnath Basu
Associate Professor
Department:Mathematics and Statistics
Research Area:Algebraic Topology
Email:somnath.basu [AT] iiserkol.ac.in

Soumalya Joardar
Assistant Professor
Department:Mathematics and Statistics
Research Area:Operator Algebras, Non-Commutative Geometry, Quantum Groups.
Email:soumalya [AT] iiserkol.ac.in

Soumya Bhattacharya
Assistant Professor
Department:Mathematics and Statistics
Research Area:Number Theory
Email:soumya.bhattacharya [AT] iiserkol.ac.in

Soumyajit Roy
Professor
Department:Chemical Sciences
Research Area:Soft-matter, Supramolecular Sciences, Materials Science, Sustainability Sciences.
Email:s.roy [AT] iiserkol.ac.in

Sourin Das
Professor
Department:Physical Sciences
Research Area:Quantum Condensed Matter Physics ; Quantum Information and Quantum Computation
Email:sourin [AT] iiserkol.ac.in

Subhajit Bandyopadhyay
Professor
Department:Chemical Sciences
Research Area:Light-triggered modulation of molecular properties, analytical chemistry, bio-inspired catalysis, smartphone chemistry
Email:sb1 [AT] iiserkol.ac.in

Subhasis Sinha
Associate Professor
Department:Physical Sciences
Research Area:Condensed Matter Theory
Email:subhasis [AT] iiserkol.ac.in

Subhronil Mondal
Assistant Professor
Department:Earth Sciences
Research Area:Ecology and Paleoecology, Macroecology, Macroevolution
Email:subhronil.m [AT] iiserkol.ac.in

Subrata Shyam Roy
Associate Professor
Department:Mathematics and Statistics
Research Area:Operator Theory
Email:ssroy [AT] iiserkol.ac.in

Sudip Kumar Garain
Assistant Professor
Department:Physical Sciences
Research Area:Computational Astrophysics
Email:sgarain [AT] iiserkol.ac.in

Sujata Ray
Associate Professor
Department:Earth Sciences
Research Area:Environmental Science and Engineering
Email:sujataray [AT] iiserkol.ac.in

Sukanta Dey
Professor
Department:Earth Sciences
Email:sukanta.dey [AT] iiserkol.ac.in

Suman De Sarkar
Associate Professor
Department:Chemical Sciences
Research Area:Synthesis and Catalysis
Email:sds [AT] iiserkol.ac.in

Sumit Khanra
Associate Professor
Department:Chemical Sciences
Research Area:Bioinspired Water Oxidation towards Energy, Small Molecules and C-H bond Activation, Nanomagnetism, Organometallic Chemistry
Email:sumit.khanra [AT] iiserkol.ac.in

Sumit Sen Santara
Assistant Professor
Department:Biological Sciences
Research Area:Natural Killer cells, Immunotherapy, Cancer, Infectious Diseases
Email:sumit.santara [AT] iiserkol.ac.in

Supratim Banerjee
Associate Professor
Department:Chemical Sciences
Research Area:Supramolecular and Organic Functional Materials
Email:supratim.banerjee [AT] iiserkol.ac.in

Supratim Datta
Professor
Department:Biological Sciences
Research Area:Protein Engineering, Organism engineering
Email:supratim [AT] iiserkol.ac.in

Supratim Sengupta
Professor
Department:Physical Sciences
Research Area:Computational Biology, Biophysics and Complex Systems
Email:supratim.sen [AT] iiserkol.ac.in

Supriyo Mitra
Professor
Department:Earth Sciences
Research Area:Seismology, Continental Tectonics
Email:supriyomitra [AT] iiserkol.ac.in

Sushil Gorai
Associate Professor
Department:Mathematics and Statistics
Research Area:Several complex variables
Email:sushil.gorai [AT] iiserkol.ac.in

Susmita Roy
Assistant Professor
Department:Chemical Sciences
Research Area:Theoretical and Computational Physical Chemistry and Biophysical Chemistry
Email:susmita.roy [AT] iiserkol.ac.in

Swadhin Mandal
Professor
Department:Chemical Sciences
Research Area:Organometallic Catalytic Transformations, Nanomaterials
Email:swadhin.mandal [AT] iiserkol.ac.in

Swarnendu Datta
Assistant Professor
Department:Mathematics and Statistics
Research Area:Geometric representation theory of unipotent groups.
Email:swarnendu.datta [AT] iiserkol.ac.in

Swastika Chatterjee
Assistant Professor
Department:Earth Sciences
Research Area:Computational Mineral Physics and Condensed Matter Physics
Email:swastika [AT] iiserkol.ac.in

Tapabrato Sarkar
Assistant Professor
Department:Earth Sciences
Research Area:Metamorphic petrology, Geochemistry and Geochronology
Email:tapabrato [AT] iiserkol.ac.in

Tapas Kumar Sengupta
Professor
Department:Biological Sciences
Research Area:Cancer Biology, Bacterial interaction, Bioremediation
Email:senguptk [AT] iiserkol.ac.in

Tarun Kumar Dalai
Associate Professor
Department:Earth Sciences
Research Area:Application of trace elements and isotopes in study of Earth Processes
Email:dalai [AT] iiserkol.ac.in

Tushar Kanti Nandi
Associate Professor
Department:Humanities and Social Sciences
Research Area:Applied research in the area of Labour Economics, Development Economics and Public Policy
Email:tushar [AT] iiserkol.ac.in

Venkataramanan Mahalingam
Professor
Department:Chemical Sciences
Research Area:Luminescent Nanomaterials & Nanocomposites
Email:mvenkat [AT] iiserkol.ac.in