Dr.Partha Pratim Chakravorty, FZS, FNESA

@rnlkwc.ac.in

Associate Professor of Zoology
Raja Narendra Lal Khan Women's College ( Autonomous)

Dr.Partha Pratim Chakravorty, FZS, FNESA


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https://researchid.co/parthapratim
Teaching experience( UG & PG)-22 years, Research Experience -35 years( 7 years as Post Doc Fellow in the form of Young Scientist of DST, Govt. of India & Pool Scientist from CSIR, Govt. of India, PhD produced-08, ongoing PhD students-07, Member of Governing Body of the college

EDUCATION

M.Sc., PhD

RESEARCH INTERESTS

Soil Ecotoxicology, Nutritional Ecology, Soil Microbiology

FUTURE PROJECTS

Soil Ecotoxicology

Usefulness of some enzyme of selected species of earth worm as biomarker to detect heavy metals pollution in soil


Applications Invited
ongoing

Soil Ecotoxicology

Usefulness of some molecular biological technique of Porcelio laevis ( Isopoda) as biomarker to detect heavy metals pollution in soil


Applications Invited
Ongoing

Bioremediation of Plastic pollution

Utility of earthworm gut containing bacteria in degradation of polythene & polypopeline


Applications Invited
ongoing
18

Scopus Publications

389

Scholar Citations

10

Scholar h-index

10

Scholar i10-index

Scopus Publications

  • A Modified General Diode Equation
    Pragnan Chakravorty
    IEEE Transactions on Computer Aided Design of Integrated Circuits and Systems, 2022
  • Current-Phase Synthesis of Linear Antenna Arrays Using Particle Swarm Optimization Variants
    Sudipta Das, Pragnan Chakravorty, Durbadal Mandal
    Advances in Intelligent Systems and Computing, 2020
    In this work, the problem of low sidelobe phased array synthesis is taken up, and variants of particle swarm optimization (PSO), like Grey PSO and Novel PSO, are adopted for dealing with this problem. For simplicity, periodic linear array geometries are considered. Effect of position regulation and inertia control strategies on the convergence of PSO variants is studied in this regard. Results reflect the impacts of position regulation and inertia control strategies on the convergence of the algorithms for the problem instance considered. Without the influence of position regulation Grey PSO and Novel PSO have been able to suppress interference levels for a 20-element linear array to \\(-21.31\\) and \\(-31.23\\) dB, respectively. Under the influence of the position regulation, their respective values got improved to \\(-27.90\\) and \\(-43.35\\) dB.
  • Computing Intensive Bandwidth Enhancement in Stacked Hybrid DRA
    Vrushali Wasnik, Vijay Dahake, Pragnan Chakravorty
    Proceedings of the International Conference on Computational Techniques Electronics and Mechanical Systems Ctems 2018, 2018
    Designs of modern antennas have been inevitably computational intensive tasks. Here, we present a stacked dielectric resonator antenna (DRA), where its bandwidth has been enhanced upto 189%, ranging from 0.5 GHz to 18.1 GHz. The effect of various parameters on antenna design has been investigated. This antenna configuration has monopole -type radiation pattern, operating beyond ultra wideband response.
  • What Is a Signal? [Lecture Notes]
    Pragnan Chakravorty
    IEEE Signal Processing Magazine, 2018
    After decades of advances in signal processing, this article goes back to square one, when the word signal was defined. Here we investigate if everything is all right with this stepping stone of defining a signal.
  • Antenna system strategies for wireless sensor networks in resource hungry smart cities
    Pragnan Chakravorty, Durbadal Mandal, Alessandro Polo, Federico Viani
    IEEE 2nd International Smart Cities Conference Improving the Citizens Quality of Life Isc2 2016 Proceedings, 2016
    The information and communication technology (ICT) backbone of any smart city system should be essentially a wireless sensor network (WSN) for it to be smart in any sense. It goes beyond doubt that such a system is extremely hungry in terms of information and resources. The vital resources like frequency spectrum, power of transmission, number of trans-receivers etc. have their own set of limitations in terms of feasibility, availability, safety, reliability and cost-effectiveness. Here, major limitations of a wireless communication network are discussed. A strategy of smart integrated network service (SINS), using directive antennas and phased arrays is proposed to do away with most of these problems.
  • Radiation Pattern Correction in Mutually Coupled Antenna Arrays Using Parametric Assimilation Technique
    Pragnan Chakravorty, Durbadal Mandal
    IEEE Transactions on Antennas and Propagation, 2016
    Mutual coupling in antenna arrays has been a deterrent issue for design accuracy and predictions. Several techniques for calculation, reduction, and compensation of mutual coupling were proposed in the past; the techniques include both analytical and numerical approaches. However, the methods of mutual coupling mitigation in context of radiation pattern correction had been very few. Here, mutual impedances are calculated through a conventional technique and is used to form a set of network equations whose parameters are assimilated with those of a desired radiation pattern; the proposed technique directly leads to the calculation of feed currents, required in the antennas, for restoring the mutual coupling affected radiation pattern to the desired pattern. The technique is accurate with lesser computational complexity compared with the extant methods.
  • Microstrip bandpass filter design using split-path method and optimized curvature corrections
    Pragnan Chakravorty, Durbadal Mandal
    International Journal of Numerical Modelling Electronic Networks Devices and Fields, 2016
    Bandpass filters with wide pass-band are an essential requirement in various equipments of satellite and defence communication sectors. Here a method of split-path interactions is proposed to approximately predict the resonant frequency and topology of bandpass filters which otherwise fall under the category of heuristic designs. Curved transmission lines are often required to make filter structures physically compact; however, curvature effects create errors in the theoretical design prediction of resonant or central frequencies for bandpass filter design. Earlier propositions on curvature corrections had been considerably precise, but recent design standards demand even higher accuracies. The prime feature of this work is the use of a meta-heuristic optimization i.e. Particle Swarm Optimization technique in curvature corrections for the first time which brings accuracies of over 99% in the corrected results. The split paths used in this design are suitably curved, with the proposed optimized curvature correction technique, so as to attain a compact size of the filter. The resulting filter has a low insertion loss of around -1.00dB and a sharp stopband cut-off. Fabrication was done on a FR4 microstrip substrate with a good agreement between measured and simulated results. Copyright © 2015 John Wiley & Sons, Ltd.
  • Feed line optimization in pseudo-interdigital bandpass filters
    Pragnan Chakravorty, Sudipta Das, Durbadal Mandal, Ragini Lanjewar
    2015 IEEE International Wie Conference on Electrical and Computer Engineering Wiecon Ece 2015, 2016
    To demonstrate the importance of feed line topology in the design of filter with coupled resonators, a pseudo interdigital bandpass filter is designed here. In the conventional approach the feedlines are of coupled type when the filter is designed over a substrate of RT/Duroid (εr = 10.8); however, when the filter is designed over FR4 (εr = 4.3) substrate, the coupled feed lines are unable to produce the desired filter response. To comply with the filter prototypes a tapped feedline structure is then implemented to produce the desired results. Therefore it may be deduced that feedline layout is not a matter of choice but an inevitable design requirement. An explicit design procedure and measured/simulated results are presented here.
  • Sidelobe and beamwidth optimization of linear antenna arrays with symmetric relocation boundary condition of PSO
    Pragnan Chakravorty, Gopi Ram, Durbadal Mandal, Sudipta Banerjee
    2015 IEEE International Wie Conference on Electrical and Computer Engineering Wiecon Ece 2015, 2016
    Boundary conditions in particle swarm optimizers are an important algorithmic part which can constrain the particles within the solution space which increases their scope of participation in solution finding process. Usually, velocities of the particles are regulated to bring them back to solution space; Here the basic approach of regulating the position of particles is different than the conventional approaches, particles which go out of solution place are relocated inside by maintaining symmetry about the boundary. A twelve element linear antenna array is taken as the optimization target for the reduction of side lobes in the radiation pattern without increase in the mainlobe beamwidth. Results of the proposed boundary condition show better performance in terms of better global solution and quicker convergence compare to the other established boundary algorithms.
  • Radiation pattern synthesis of TMCAA using bacteria foraging optimization
    Gopi Ram, P. Chakravorty, Durbadal Mandal, Rajib Kar, Sakti Prasad Ghoshal, et al.
    2015 IEEE International Wie Conference on Electrical and Computer Engineering Wiecon Ece 2015, 2016
    In this paper radiation pattern synthesis of time modulated circular antenna array is dealt with. Optimal switching time sequence and optimal uniform inter element spacing is used as variable to control the radiation pattern of the array. The optimal value of controlled parameter can be obtained by the evolutionary optimization technique. Three algorithms real coded algorithm (RGA), particle swarm optimization (PSO), and bacteria foraging optimization (BFO) has been used and compared with their performance. The numerical results have been carried out by taking three array set of 12-, 18-, and 25-elements. Simulation results show better side lobe performance with respect to the uniform circular antenna array.
  • Grating Lobe Suppression With Discrete Dipole Element Antenna Arrays
    Pragnan Chakravorty, Durbadal Mandal
    IEEE Antennas and Wireless Propagation Letters, 2016
  • Null placement in linear antenna arrays with a novel boundary condition of PSO
    Pragnan Chakravorty, Durbadal Mandal
    2nd International Conference on Electronics and Communication Systems Icecs 2015, 2015
  • GSAWM for beamforming and directivity of linear antenna arrays
    Gopi Ram, Pragnan Chakravorty, Durbadal Mandal, Rajib Kar, Sakti Prasad Ghoshal
    2nd International Conference on Electronics and Communication Systems Icecs 2015, 2015
  • Role of boundary dynamics in improving efficiency of particle swarm optimization on antenna problems
    Pragnan Chakravorty, Durbadal Mandal
    Proceedings 2015 IEEE Symposium Series on Computational Intelligence Ssci 2015, 2015
  • PSO in concentric circular arrays for side lobe reduction with symmetric relocation boundary condition
    Pragnan Chakravorty, Durbadal Mandal
    Advances in Intelligent Systems and Computing, 2015
  • Hysteretic boundary conditions for PSO of antenna array pattern synthesis
    Pragnan Chakravorty, Durbadal Mandal
    Procedia Computer Science, 2015
  • Optimization of antenna arrays for SLL reduction towards pareto objectivity using GA variants
    Sudipta Das, Gopi Ram Hardel, Pragnan Chakravorty, Durbadal Mandal, Rajib Kar, et al.
    Proceedings 2015 IEEE Symposium Series on Computational Intelligence Ssci 2015, 2015
  • A microstrip wideband bandpass filter based on λ/2 stub with spurious passband suppression scheme
    Pragnan Chakravorty
    International Journal of Electronics, 2014

RECENT SCHOLAR PUBLICATIONS

  • Statistical optimization and ecotoxicological validation of a hydrolytic detoxification pathway for carbofuran using earthworm gut-associated Bacillus paralicheniformis PPH2
    P Shit, H Jana, PP Chakravorty, P Sarangi, P Sur, SS Gauri, Y Sakai
    2026
  • Carbendazim toxicity and environmental fate: A critical review of mechanisms, impacts, and future research priorities
    P Shit, PP Chakravorty, H Jana
    Journal of Contemporary Studies in Science and Innovation (JCSSI) 1 (1) , 2025
    2025
  • Earthworm gut microbiota: A novel biocatalyst for the sustainable degradation of carbendazim in Agro-ecosystems
    P Shit, PP Chakravorty, H Jana, SS Gauri, Y Sakai
    Environmental Analysis, Health and Toxicology 40, e2025011 , 2025
    2025
  • The Usefulness of physiological and biochemical stress response of soil collembola (Xenylla welchi Folsom, 1916) as a biomarker in a lead-amended garden soil
    P Sarangi, PP Chakravorty, B Das
    Environmental Analysis, Health and Toxicology 40, e2025004 , 2025
    2025
    Citations: 3
  • Evaluation of changes in reproductive and biochemical parameters in indigenous earthworm Perionyx excavatus (Perrier, 1872) against impact of selected pesticides
    S Sanyal, PP Chakravorty, R Saha
    International Journal of Entomology Research 9 (6), 47-52 , 2024
    2024
    Citations: 3
  • Pesticide soil pollution: an overview about advantages and disadvantages of different remediation technologies
    P Shit, I Bhattacharjee, PP Chakravorty, H Jana, Y Sakai
    Current World Environment 18 (2), 752 , 2023
    2023
    Citations: 11
  • Evaluation of mosquito larvicidal activity of Azolla pinnata leaf extracts against the filarial vector Culex quinquefasciatus
    I Bhattacharjee, B Mandal, PP Chakravorty
    Indian Journal of Natural Products and Resources (IJNPR)[Formerly Natural … , 2022
    2022
    Citations: 1
  • Study on Degradation of Leaf Litter of Five Tree Species by Perionyx excavatus with Relation to Their Nutrient and Anti-nutrient Content
    S Pattanayak, R Dasgupta, PP Chakravorty, SK Chakraborty
    Research Aspects in Agriculture and Veterinary Science, 1 , 2021
    2021
    Citations: 2
  • EFFECT OF SOME HEAVY METAL (Zn, Cu, Pb) POLLUTANTS AND MICROBIAL LOAD ON THE EDIBLE OYSTER (SACCOSTREA CUCULLATA) IN SUNDARBAN, WEST BENGAL
    H Jana, BK Malik, P Shit, PP Chakraborty, KC Mondal
    Journal of Environment and Sociobiology 18 (1), 1-13 , 2021
    2021
  • Impact of COVID-19 on Environmental Health-A review
    S Sanyal, PP Chakravorty
    Raja Narendra Lal Khan Women's College (Autonomous) , 2021
    2021
  • Relative toxicity of Lead and Nickel on acid and............. alkaline phosphatase in epigeic earthworm Eisenia fetida (Savigny, 1826)
    A Dey, PP Chakravorty, SK De
    International Research Journal of Basic and Applied Sciences , 2021
    2021
  • Antibiotic and Heavy Metal Resistance in Bacteria from Organs of Sewage Fed Farm Fishes
    A Deb, I Bhattacharjee, T Das, B Mandal, PP Chakravorty
    Bioscience Biotechnology Research Communications 13 (4), 2319-2326 , 2020
    2020
    Citations: 1
  • Relative toxicity of lead and nickel on some enzymatic biomarkers in epigeic earthworm Eisenia fetida (Savigny, 1826)
    A Dey, PP Chakravorty, SK De
    Bulletin of Environment, Pharmacology and Life Sciences 9 (11), 89-98 , 2020
    2020
    Citations: 1
  • Influence of nature in controlling filarial transmission: a study in slums of burdwan.
    I Bhattacharjee, B Mandal, PP Chakravorty
    2020
  • Response of Life History and Enzyme Biomarkers in Oligochaete Earthworm Due to Synthetic Pyrethroid Contamination: An Ecotoxicological Study
    S Sanyal, PP Chakravorty
    International Research Journal of Multidisciplinary Scope 18 (4), 29-37 , 2020
    2020
    Citations: 5
  • Effects of temperature on COVID-19 transmission inIndia
    I Bhattacharjee, B Mandal, A Deb, P Sarangi, PP Chakravorty
    Ecology, Environment and Conservation 27 (1), 227-231 , 2020
    2020
  • Synergistic Effect of Lead and Nickel on MetallothineinResponse in Epigeic Earthworm Eisenia fetida (Savigny 1826)
    A Dey, PP Chakravorty, SK De
    Environment and Ecology 38 (3A), 559—564 , 2020
    2020
  • Development status of Wuchereria bancrofti in experimentally infected Culex quinquefasciatus with seasonal fluctuations: A study in slums of Burdwan
    I Bhattacharjee, B Mandal, PP Chakravorty
    International Journal of Entomology Research , 2020
    2020
  • Red Rose Pigments Utilities as Dyes at Different pH but Poor Anti-Bacterial
    AK Chakraborty, K Adhikari, A Bhoumick, A Bera, PP Chakravorty
    International Journal of Clinical & Medical Informatics 2 (1), 36-50 , 2019
    2019
  • Short-term Effect of Two Fungicides on Cellulase Enzyme Activity of Eisenia fetida Under Laboratory Conditions
    S Mandal, PP Chakravorty, JK Kundu
    International Journal of Advanced Scientific Research and Management 3 (11 … , 2018
    2018

MOST CITED SCHOLAR PUBLICATIONS

  • Impact of insecticides on nontarget microarthropod fauna in agricultural soil
    VC Joy, PP Chakravorty
    Ecotoxicology and Environmental Safety 22 (1), 8-16 , 1991
    1991
    Citations: 68
  • Studies on Relative Toxicities of Six Insecticides on Epigeic Earthworm, Perionyx excavatus
    R Das Gupta, PP Chakravorty, A Kaviraj
    Bulletin of Environmental Contamination and Toxicology 85 (1), 83-86 , 2010
    2010
    Citations: 53
  • Protective Effect of Aqueous Extract of Terminalia arjuna against Dehydrating Induced Oxidative Stress and Uremia in Male Rat
    K Das, PP Chakraborty, D Ghosh, DK Nandi
    Iranian Journal of Pharmaceutical Research 9 (2), 153-161 , 2010
    2010
    Citations: 51
  • Susceptibility of epigeic earthworm Eisenia fetida to agricultural application of six insecticides
    RD Gupta, PP Chakravorty, A Kaviraj
    Chemosphere 84 (5), 724-726 , 2011
    2011
    Citations: 44
  • Can hypoglycaemic medications be withdrawn in older people with type 2 diabetes?
    AH Abdelhafiz, P Chakravorty, S Gupta, A Haque, AJ Sinclair
    International Journal of Clinical Practice 68 (6), 790-792 , 2014
    2014
    Citations: 39
  • Effects of carbaryl, chlorpyrifos and endosulfan on growth, reproduction and respiration of tropical epigeic earthworm, Perionyx excavatus (Perrier)
    R Dasgupta, PP Chakravorty, A Kaviraj
    Bulletin of Environmental Contamination and Toxicology 85, 83-86 , 2010
    2010
    Citations: 24
  • Effect of Two Herbicides on Xenylla Welchi (Hexapoda:Collembola) Under Laboratory Conditions
    A Haque, R Das Gupta, PP Chakravorty
    Bulletin of environmental contamination and toxicology 86 (6), 583-586 , 2011
    2011
    Citations: 16
  • Effect of herbicides on Cyphoderus javanus (Hexapoda: Collembola) under laboratory conditions
    PP Chakravorty, A Haque, S Sanyal, R Dasgupta
    Mortality 6, 34 , 2015
    2015
    Citations: 15
  • Impact of industrial effluent on water quality and benthic macro invertebrate diversity in fresh water ponds in Midnapore district of west Bengal, India
    PP Chakravorty, M Sinha, SK Chakraborty
    Journal of Entomology and Zoology Studies 2 (3), 93-101 , 2014
    2014
    Citations: 15
  • Pesticide soil pollution: an overview about advantages and disadvantages of different remediation technologies
    P Shit, I Bhattacharjee, PP Chakravorty, H Jana, Y Sakai
    Current World Environment 18 (2), 752 , 2023
    2023
    Citations: 11
  • Biomonitoring of anticholinesterase pesticides in the soil: usefulness of soil Collembola.
    PP Chakravorty, S Bose, VC Joy, S Bhattacharya
    Biomedical and Environmental Sciences: BES 8 (3), 232-239 , 1995
    1995
    Citations: 7
  • Response of enzyme biomarker and life-history parameters of epigeic earthworm Perionyx excavatus exposed to organophosphate pesticide
    S Sanyal, A Kaviraj, PP Chakravorty
    Journal of Entomology and Zoology Studies , 2017
    2017
    Citations: 6
  • Comparative toxicity studies of four pesticides on the epigeic earthworm Perionyx excavatus in two different soil media
    S Sanyal, R Dasgupta, A Kaviraj, PP Chakravorty
    EM Int 34, 47-51 , 2015
    2015
    Citations: 6
  • Response of Life History and Enzyme Biomarkers in Oligochaete Earthworm Due to Synthetic Pyrethroid Contamination: An Ecotoxicological Study
    S Sanyal, PP Chakravorty
    International Research Journal of Multidisciplinary Scope 18 (4), 29-37 , 2020
    2020
    Citations: 5
  • Relative Toxicity of two Selected Fungicides on Acid Phosphatase and Alkaline Phosphatase activity of Epigeic Earthworm Eisenia Fetida (Oligochaeta)
    S Mandal, PP Chakravorty, JK Kundu
    World Wide Journal of Multidisciplinary Research and Development 4 (2), 14-17 , 2017
    2017
    Citations: 5
  • Effect of industrial effluents from iron and steel company on benthic macroinvertebrate communities of fresh water ponds in India
    M Sinha, SK Chakraborty, PP Chakravorty
    The International Journal of Science and Technoledge 3 (1), 81 , 2015
    2015
    Citations: 4
  • The Usefulness of physiological and biochemical stress response of soil collembola (Xenylla welchi Folsom, 1916) as a biomarker in a lead-amended garden soil
    P Sarangi, PP Chakravorty, B Das
    Environmental Analysis, Health and Toxicology 40, e2025004 , 2025
    2025
    Citations: 3
  • Evaluation of changes in reproductive and biochemical parameters in indigenous earthworm Perionyx excavatus (Perrier, 1872) against impact of selected pesticides
    S Sanyal, PP Chakravorty, R Saha
    International Journal of Entomology Research 9 (6), 47-52 , 2024
    2024
    Citations: 3
  • Study on Degradation of Leaf Litter of Five Tree Species by Perionyx excavatus with Relation to Their Nutrient and Anti-nutrient Content
    S Pattanayak, R Dasgupta, PP Chakravorty, SK Chakraborty
    Research Aspects in Agriculture and Veterinary Science, 1 , 2021
    2021
    Citations: 2
  • Effect of herbicides on digestive enzyme activity of epigeic indigenous earthworm Perionyx excavates( Oligochaeta)
    S Sanyal, A Chakravorty, PP, Kaviraj
    International Journal of Current Research 8 (6), 33128-33132 , 2016
    2016
    Citations: 2

GRANT DETAILS

Name of the Investigator Title of the project and duration Amount
Sanctioned/ completed/ongoing Funding Agency
Dr. P. P. Chakravorty (PI) Ecophysiological---Soil microarthropod 3 years
Completed DST
Dr. P. P. Chakravorty (PI) Bioassay of insecticides—soil collembola
Completed CSIR
Dr. P. P. Chakravorty (PI) Use of vermicompost—lateritic soil management 0,000/-
Completed DST
( W. B.)

Dr. P. P. Chakravorty (PI) Bioassay of insecticide pollution---soil
microarthropods. 2 years Rs.
50,000/-
completed
UGC
Dr. P. P.Chakravorty (PI) &
R. Dasgupta (Co PI) Ecotoxicological & Biochemical --- Epigeic earthworm fauna. 2 years Rs.
75,000/-
completed
UGC
Dr. P. P.Chakravorty (PI),
Dr. R. Dasgupta & Dr.T.
D as (Co PI) Studies on the usefulness of some-- pollution in agro ecosystem Rs.
9,86,000/-
completed UGC
Dr. P.P.Chakravorty ( PI) Studies on the role of selected ---ecosystems
ongoing DST W.B.

RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)

Recommendation of tree species in afforestation programme with respect to soil health, Establishment of ecologically safe insecticides for general agricultural practices

Industry, Institute, or Organisation Collaboration

Research collaboration has been initiated between myself and Dr. Yuji Sakai, Kokaguin University, Tokyo, Japan

STARTUP

Start up my carrier as an Assistant Professor of Zoology on 19/04/2000, at present i am attached to my Institution as an Associate Professor

SOCIAL, ECONOMIC, or ACADEMIC BENEFITS

• Membership of Academic Societies---
1. Life Member Society of Soil Biology & Ecology, Bangalore.
2.Life Member National Environmental science academy, New Delhi
3. Life Member Physiological society of India, Kolkata
4. Life Member Zoological society of India, Kolkata.
5. Member Society for Conservation of Biology, Baltimore, Maryland, USA
6. Member of ISEIS ( International Society for Environmental Information sciences), Canada.
7. Life Member The Academy of Environmental Biology, ITRC, Lucknow.
8. Member International Society of Tropical Ecology, JNU
9. Life member Asian Biological Research Foundation