Publications

In Journals

Refereed Journals

 

 

  1. R. Soniya, P. J. JoJo, Mayeen Uddin Khandaker (2021)
    Study of Radium Content and Radon Exhalation Rates in Raw Building Materials Used in Southern India. (communicated)
  2. Rani K Pillai1,, Rejani  P2,P. J Jojo1 A multipronged approach to the dose assessment in a highly heterogeneous background radiation area – southwest coast of Kerala (communicated)
  3. A Rawat, P J Jojo and P J Singh (2022) Dielectric properties of Polyvinylpyrrolidone / Polyvinylacetate blend films (Communicated )
  4. Bindhu Christopher and Jojo P. J. (2022)
    Estimation of absorption rate of radiation from indoor Wi-Fi (routers & phones) to different parts of human body (Communicated)
  5. R. Vivek Kumara1, Anila Gopinathana, G. Jaikrishana, P.J. Jojob, Birajalaxmi Dasc2 (2022) Influence of natural chronic low dose radiation exposure, age and life style habits on human somatic gene mutations at the HPRT locus (Communicated to Env. Health Perspectives )
  6. S, R. Soniya, P. J. Jojo (2022) Natural radioactivity assessment of surface soil collected from Poovar village of Kerala, India Proceedings of ICMPMA, IOP, Scopus 1263, 012034 doi:10.1088/1757-899X/1263/1/012034
  1. Kolkoma D., Pereira F. B., Jojo P. J. and Michael K. Assessment of Radioactive elements in the Ramu Nickel and Yandera mining sites of Papua New Guinea related to Radiation Pollution of the Environment (In press, International Journa of Radiation Research– Scopus)
  1. J. JoJo and Mayeen Uddin Khandaker (2022) Study of certain congenital malformations due to low-level radiation exposures from high background radiation areas in India https://doi.org/10.1016/j.jksus.2022.102166  Journal of King Saud University – Science – Scopus
  1. Arunima S, Lekshmi R, P J Jojo, Mayeen Uddin Khandaker (2021)
    A study on Leaching of primordial radionuclides 232Th and 40K to water bodies Radiation Physics & ChemistryVol.188 https://doi.org/10.1016/j.radphyschem.2021.109658   – Scopus) IF 2.596
  2. Dhanya Balakrishnan, P. J. JoJo, Mayeen Uddin Khandaker (2021)
    Inhalation Dose in the Indoor Environment of Eloor Industrial Area, Kerala (Accepted:  Radiation Physics & Chemistry Vol 188 https://doi.org/10.1016/j.radphyschem.2021.109655 – Scopus)
  3. Midhun, R.S. Rejith, Shilpa Mariam Samuel, Samuel Mathew, P.J. Jojo, and B.K. Sahoo (2021) A comparative study of soil radon and thoron exhalation from four villages of Kollam, Kerala Pollution Research 40(3) 418-423 – SCOPUS)
  1. Victor Epemu Philip, Felix B Pereira, Gabriel Anduwan and Jojo P.J.
    Brief profile of ionising radiation dose to the populace in Lae city, Papua New Guinea(Communicated)
  2. David Kolkoma, Felix B Pereira, Jojo P. J. (2020) Assessment of radiological exposures in the vicinity of Gold mining area of Wau-Bulolo in Papua New Guinea. (Accepted: International Journal of Radiation Research-SCOPUS)
  1. Monica S, Jojo P. J. Heterogeneity of Radioactivity in Soil from Karunagapally, Kerala. The Open Access Journal of Science and Technology vol. 7, Article ID 101264, 10 pages, 2019. doi:10.11131/2017/101258
  2. Soniya S. R., Sunila Abraham, Mayeen Uddin Khandaker, Jojo P.J. (2020)
    Investigation of Diffusive Transport of Radon Through Bricks. Radiation Physics & Chemistry https://doi.org/10.1016/j.radphyschem.2020.108955
  1. Bindhu Christopher, Sheena Mary Y, Khandaker M. U., Jojo P J (2020) Empirical study on specific absorption rate of head tissues due to induced heating of 4G cell phone radiation  Radiation Physics & Chemistry https://doi.org/10.1016/j.radphyschem.2020.108910
  2. Mayeen Uddin Khandaker, Nur Khairunnisa Zainuddin, D.A.Bradley, M.R.I.Faruque, F.I.Almasoud, M.I.Sayyed,  Suleiman, P.J.Jojo. (2020) Radiation Dose to Malaysian Populace via the Consumption of Roasted Ground and Instant Coffee Radiation Physics and Chemistry (Elsevier) Available online : https://doi.org/10.1016/j.radphyschem.2020.108886.
  1. Monica S., Jojo P. J. and Mayeen Uddin Khandekar (2020). Radionuclide concentrations in medicinal florae and committed effective dose through Ayurvedic medicines International Journal of Radiation Biology 96:8, 1028-1037. https://doi.org/10.1080/09553002.2020.1767816
  2. Bindhu Christopher, Bradley D. A., Khandaker M. U., Chew M. T., Sheena M. Y. and Jojo P. J.
    Effects of Mobile Phone Radiation on Certain Hematological Parameters. Radiation Physics & Chemistry 166 (2020) 108443.
  1. Visnuprasad A.K., Reby Roy K.E., Jojo P. J. and Sahoo B.K. (2019) Comparison of results from indoor radon measurements using active and passive methods with those from mathematical modeling.
    Radiation and Environmental Biophysics, 58(3), 345-352. Springer Nature.
  2. Soniya S.R., Monica S, Visnuprasad A.K., and Jojo P.J.(2019) Assessment of radiological consequence of radioactivity in monazite beach sand in south west coastal region in southern India. Materials Today, 16 (2) 784-791.  Elsevier
  1. Lekshmi R and Jojo P. J. (2019) Radiation dose parameters and source term analysis in normal littoral regions of southern peninsular India. Pollution Research vol.38(2) 380-387 (Scopus)
  1. Monica S., Vishnu A. K., Soniya S.R. and Jojo P. J. (2019)
    Comparison of gamma dose levels  assessed by various methods  Materials Today, 16(2)776-783. Elsevier
  2. Arunima S, Lekshmi R, Ben Byju S and Jojo P.J. (2019) Study of leaching of uranium from beach sand to water bodies in Kerala, India. Pollution Research 38(1) 169-174.(Scopus).
  3. Reeba Maria Jose and Jojo P.J. (2019) Concentration factor of radionuclides in food crops from the south west coast of Kerala. Think India  Journal 22 (14) 14427 – 432 (UGC CARE listed)
  4. Pereira F. B., O. Renagi, P. J. Jojo, G. Anduwan (2019) A study of climate variability in Papua New Guinea. Journal of Geoscience and Environment Protection. 7(5) 45-52.
  1. P J Jojo, Philip Epemu Victor, F B Pereira and Gabriel Anduwan (2019) Radon in dwellings of Papua New Guinea: Observations of a preliminary study. International Journal of Environmental Science and Development10(6)188-192. (Scopus)
  1. Lekshmi R and Jojo P. J. (2018) A Correlation Study between Radium Content and Radon Exhalation Rates in Soil Samples along the Coastal Regions of Perumathura and Vizhinjam, Trivandrum District, Kerala. International Journal for Research in Applied Science & Engineering Technology 6 (1): 728-732 ISSN: 2321-9653,.
  1. Arunima S., Lekshmi R. and Jojo P. J. (2018) Estimation of carcinogenic risk through ingestion of locally available food materials of south west coast of India. Journal of Ultra Scientist in Physical Science-A 30(1), 92-96 ISSN 2231-346X
  2. Visnuprasad A.K.,Jaikrishnan , Sahoo B. K., Pereira C. E. and Jojo P. J.(2018)  Contribution of  thoron and progeny towards inhalation dose in a thorium abundant beach environment. Radiation Protection Dosimetry 178(4) 405–413.
  3. Lekshmi R, Arunima S and Jojo P. J. (2018) Determination of radon exhalation rates and emanation factor of some soil samples collected from southern seashore of Kerala, India. Journal of Ultra Scientist in Physical Science-A 30(1), 80-85.
  4. Arunima and Jojo, P. J. (2018) Assessment of Ingestion Dose and Lifetime Cancer Risk through Marine Food Samples of South West Coast of Kerala. International Journal for Research in Applied Science & Engineering Technology, vol.6(I), 2018.
  5. Midhun M., Rejith R.S., Samuel Mathew, Jojo P. J. and Sahoo B.K. (2017) The in situ measurement and calculation of Exhalation rates of Radon and Thoron in Alappad region of Kollam district, Kerala, India. International Journal of Pure and Applied Physics 13(1) 172-178 ISSN 0973-1776
  6. Bindhu Christopher and Jojo P. J.(2017) Near field non-ionising electromagnetic radiation of cellular base stations in selected locations. Journal of Ultra Scientist in Physical Science-B 29(11) 349- 355.
  7. Reeba Maria Jose and Jojo P. J. (2017) Radiation dose to the populace in southern peninsular India through foodstuff. Nature, Environment and Pollution Technology 16(4) 1229-1234  ISSN 0972-6268; E-ISSN 2395-3454
  8. Monica S., Bijini B.R. and Jojo P. J.(2017) Distribution of Uranium in Drinking water and Associated Age-Dependent Radiation Dose in Porakad, Allapuzha District. Journal of Ultra Scientist in Physical Science-B  29(11) 337-341.
  9. Mithun M., Samuel Mathew, Rejith R.S., Jojo P. J. and B. K. Sahoo (2017) Comparison of thoron (220Rn) content and gamma radiation level in high background radiation area of Kollam, India.
    Journal of Radioanalytical and Nuclear Chemistry 314(8) 177-185.  org/10.1007/s10967-017-5378-8
  10. Monica S., Soniya S.R. and Jojo P. J.(2017) Measurement of radium content and radon exhalation rates in soil samples along the coastal regions of Karunagapally, Kollam district, Kerala.
    Indian Journal of Scientific Research 8(1) 31-34.
  11. Monica S., Visnuprasad A.K., Soniya S.R.and Jojo P. J. (2017) Ambient gamma levels in the in seaside regions of Alapuzha district, Kerala. International Journal of Pure and Applied Physics 13(1)179-187 ISSN 0973-1776
  12. Soniya S.R., Monica S., Jojo P. J. (2017) Estimation of radiation exposure in environmental soil samples from Thirumullavaram coastal region, Kerala. Indian Journal of Scientific Research 8(1) 201-205.
  13. Soniya S.R., S. Monica, Visnuprasad A.K., Jojo P. J.(2017) Heterogeneity of radioactivity in soil from Varkala, Kerala. International Journal of Pure and Applied Physics. 13(1) 209-214 ISSN 0973-1776
  14. Ramsiya M, Antony Joseph and Jojo P.J. (2017) Estimation of indoor radon and thoron in Palakkad, Kerala, India using Solid State Nuclear Track Detectors. Journal of Radiation Research and Applied Sciences.10 (3),  269-272. doi.org/10.1016/j.jrras.2017.05.004
  15. Dhanya Balakrishnan, Jojo P. J. and JP.Abraham (2017)  An assessment of ingestion dose to public from polonium -210 and lead- 210 via dietary sources in an industrial area Eloor, Kerala, India. Pollution Research. 36(4)163-168. 
  16. Lekshmi R and  Jojo P. J. (2017) Radioactive pockets in the southern seashore of kerala, india. International Journal of Scientific Research 6(5)257-259
  17. Reshma Bhaskaran, Ravikumar C. D., Vishnu Prasad A. K., Jojo P. J., Dhanalakshmi B., Chitra N., Bala Sundar S., Jose M. T. and Rosaline Mishra (2017)  Inhalation dose and source term studies in a tribal area of wayanad, Kerala, India. Journal of Environmental and Public Health 1-9.  https://doi.org/10.1155/2017/1930787
  18. Arunima S. and Jojo P. J.(2017) Assessment of ingestion dose through staple food to the populace in the placer deposits region of west coast India. International Journal of Scientific Research 6(5)305-307.
  1. Aswathy V.V., Sabiha Alper-Hayta, Gözde Yalcin, Sheena Mary Y., Yohannan Panicker, Jojo P. J., Fatma Kaynak-Onurdag, Stevan Armaković, Sanja J. Armaković, Ilkay Yildiz and Van Alsenoy C. (2017)
    Modification of benzoxazole derivative by bromine-spectroscopic, antibacterial and
    reactivity study using experimental and theoretical procedures. Journal of Molecular Structure 1141, 495-511(Elsevier) doi.org/10.1016/j.molstruc.2017.04.010
  2. Aswathy V.V., Sheena Mary , Jojo P. J.,  Yohannan Panicker C., Anna Bielenica, Stevan Armaković,  Armaković Sanja J., Paulina Brzózka, Sylwester Krukowski,  and Van Alsenoy C. (2017)
    Investigation of spectroscopic, reactive, transport and docking properties of 1-(3,4-dichlorophenyl)-3-[3-(trifluoromethyl)phenyl]thiourea (ANF-6): Combined experimental and computational study. Journal of Molecular Structure 1134, 668-680 doi.org/10.1016/j.molstruc.2017.01.016
  3. Visnuprasad A.K., Monica S. and Jojo P. J.(2016) Attached Progeny Profile in a High Level Radon-Thoron Coastal Environment. Journal of Ultra Scientist of Physical Sciences-B 28(7), 168-173
  4. Rosline Sebastian S. H., Monirah A. Al-Alshaikh, Ali A. El-Emam, Sheena Mary Y, Yohannan Panicker C., Jojo P. J., Jan Zitko and Martin Dolesal (2016) Synthesis, spectroscopic investigations, quantum chemical studies, molecular docking and antiviral activity of 5-chloro-N-(2-chlorophenyl)pyrazine-2-carboxamid. Science Advances Today 2,25239. ISSN 2455 – 2321
  5. Monica S, Visnuprasad A.K., Soniya S. R. and Jojo P. J.(2016) Estimation of indoor and outdoor effective doses and lifetime cancer risk from gamma dose rates along the coastal regions of Kollam district, Kerala. Radiation Protection and Environment 39(1) 38-43.ISSN- Print: 0972-0464,
    Online: 2250-0995
  6. Rani K Pillai, Jojo P. J. and Madhukumar K. (2016) Heterogeneity of radiation dose to the population in the west coast of India. International Journal of Scientific Research 5(6) 156-158. ISSN No 2277 – 8179.
  7. Mayeen Khandaker,  Noor Liyana  Mohd Nasir, Khandoker   Asaduzzaman, Michael  Olatunji, Yusoff  Mohd Amin, Hasan  Abu Kassim, David Bradley, Jojo P. J (2015) Evaluation of radionuclides transfer from soil-to-edible flora and estimation of radiological dose to the Malaysian populace. Chemosphere 153,528–536.
  8. Dhanya Balakrishnan, Umadevi.A.G, Ben Byju S, Sunil A, JP. Abraham, Jojo P. J.,
    Sujata Radhakrishnan and Harikumar M. (2015) External dose measurements in the Eloor industrial area in the Ernakulum district of Kerala, India. International Journal of Radiation Research 14(4) 323-329
  9. Reeba Maria Jose, Ben Byju S., Anilkumar S., Chougaonkar M. P. (2015)
    External Gamma Dose Levels In The Soil Samples of HBRAs of Kerala and Tamil Nadu, India
    International Journal of Fundamental Physical Sciences 5(2) 54-57.
  10. Dhanya Balakrishnan, Umadevi. A.G, Jose P Abraham, Jojo P. J., Harikumar M. and
    Sujatha Radhakrishnan (2015) Assessment of natural radioactivity level and radiation hazard parameters in the terrestrial environment of Eloor island, Kerala. International Journal of Fundamental Physical Sciences 5(2) 38-42. doi:10.14331/ijfps.2015.330084
  11. Shyma Mary Y., Abdul-Malek S. Al-Tamimi, Nasser R. El-Brollosy, Ali A. El-Emamc, Jojo P. J., Yohannan Panicker C., Christian Van Alsenoy (2014) Molecular structure and vibrational spectra of 2-Ethoxymethyl-6-ethyl-2,3,4,5-tetrahydro-1,2,4-triazine-3,5-dione,a potential chemotherapeutic agent, by density functional methods. Spectrochimica Acta Part A Molecular and Bimolecular Spectroscopy 133,439-48 doi: 10.1016/j.saa.2014.06.053
  12. Shyma Mary Y., Nasser R., El-Brollosy, Ali A. El-Emamb, Omar A. Al-Deeb, Jojo P. J., Yohannan Panicker C. and Christian Van Alsenoy (2014)
    Vibrational spectra, NBO analysis, HOMO–LUMO and first hyperpolarizability of 2-{[(2-Methylprop-2-en-1-yl)oxy]methyl}-6-phenyl-2,3,4,5-tetrahydro-1,2,4-triazine-3,5-dione, a potential chemotherapeutic agent based on density functional theory calculations. Spectrochimica Acta Part A Molecular and Bimolecular Spectroscopy 133:449-56.
    doi: 10.1016/j.saa.2014.06.036.
  13. Shyma Mary Y.,Jojo P. J.,  Yohannan Panicker C., Christian Van Alsenoy, Sanaz
    Ataei and Ilkay Yildiz (2014)
    Quantum mechanical and spectroscopic (FT-IR, FT-Raman, 1H  NMR and UV) investigations of 2-(phenoxymethyl) benzimidazole.
    Spectrochimica Acta Part A Molecular and Bimolecular Spectroscopy 125,12–24.        DOI:10.1016/j.saa.2014.01.068
  14. Shyma Mary Y., Jojo P. J., Yohannan Panicker C., Christian Van Alsenoy, Sanaz Ataei and Ilkay Yildiz (2014) Theoretical investigations on the molecular structure, vibrational 4 spectra, HOMO–LUMO and NBO analysis 5 of 5-chloro-2- ((4-chlorophenoxy) methyl) benzimidazole. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 122, 499-511 doi.org/10.1016/j.saa.2013.11.025
  15. Shyma Mary Y., Jojo P. J., Christian Van Alsenoy, Manpreet Kaur, M.S. Siddegowda,
    S. Yathirajan, Helena I.S. Nogueira, Sandra M.A. Cruz (2014)
    Vibrational spectroscopic studies (FT-IR, FT-Raman, SERS) and quantum chemical calculations on cyclobenzaprinium salicylate.
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 120, 340–350  doi.org/10.1016/j.saa.2013.10.020
  16. Shyma Mary Y., Jojo P. J., Christian Van Alsenoy, Manpreet Kaur, M.S. Siddegowda,
    S. Yathirajan, Helena I.S. Nogueira and Sandra M.A. Cruz (2014)
    Vibrational spectroscopic (FT-IR, FT-Raman, SERS) and quantum  chemical calculations of 3 – (10,10-dimethyl-anthracen-9-ylidene) – N,N,N-trimethyl propanaminiium chloride (Melitracenium chloride).
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 120, 370–380 doi.org/10.1016/j.saa.2013.10.021
  17. Shyma Mary Y., Sheena Mary Y., Jojo P. J., Hema Tresa Varghese and Yohannan Panicker C. (2013)
    Vibrational spectra, first order hyperpolarizability and NBO analysis of m-(p-methoxyphenoxy)benzaldehyde
    Journal of Spectroscopy and Dynamics 3,
  18. Shyma Mary Y., Jojo P. J., Hema Tresa Varghese and Yohannan Panicker (2013)
    Vibrational spectra, first order hyperpolarizability, HOMO-LUMO and NBO analysis of 2,5-dimethylbenzaldehyde semicarbazone. Journal of Spectroscopy and Dynamics. 3: 3.
  19. Mayeen Uddin Khandaker, Jojo P. J. and Hasan Abu Kassim (2012)
    Determination of Primordial Radionuclides in Natural Samples Using HPGe Gamma-Ray Spectrometry APCBEE Procedia. 1, 187-192. Elsevier
  20. Dhanya Balakrishnan, Umadevi A G, JP.Abraham, M.Rajagopalan and Jojo P. J.(2012)
    A study on activity concentration of natural radionuclides of building materials in Kochi. International Journal of Physical Fundamental Research 2(3)5-52.
  21. Mayeen Uddin Khandaker, Jojo P. J., Hasan Abu Kassim and Yusoff Mohd Amin (2012) Radiometric Analysis of Construction Materials by Using HPGe Gamma Ray Spectrometry.
    Radiation Protection Dosimetry 152 (1-3) 33-37. doi:10.1093/rpd/ncs145
  22. Mayeen uddin khandaker, Latif S. K. A., Rezaul Karim A.N.M., Md. Nizam Uddin, Md. Hanif Murad and Jojo P. J. (2012) Characterization of HPGe-detector for gamma-ray spectrometry and its application for analyzing natural samples. Asian Journal of Physical Sciences. 1(1) 47-61.
  23. Ben Byju S., Koya P. K. M., Sahoo B. K., Jojo P. J., Chougaonkar M. P. and Mayya Y. S. (2012)
    Inhalation and external doses in coastal villages of high background radiation area in Kollam,India.
    Radiation Protection Dosimetry  152 (1-3) 154-158
  24. Koya P.K.M, Chougaonkar M.P., Predeep P., Jojo P. J., Cheriyan V.D., Seshadri M. and Mayya Y.S. (2012) Effect of Low and Chronic Radiation Exposure: A Case-control Study of Mental Retardation and Cleft Lip/Palate in the Monazite Bearing Coastal Areas of Southern Kerala.
    Radiation Research 177(1)109-116. doi: 10.1667/RR2699.1
  25. Christa E P, Vaidyan V.K. Chougaonkar M.P., Mayya Y.S., Sahoo B.K. and Jojo P.J.(2012)
    Indoor radon and thoron levels in Neendakara and Chavara regions of southern coastal Kerala, India. Radiation Protection Dosimetry 150(3) 385-390 doi:10.1093/rpd/ncr399
  26. Rawat A, Christa E Pereira, Vaidyan V. K. Prasad R and Jojo P. J.(2012)
    Inhalation dose assessment in multi storied dwellings in four regions of India
    Iranian Journal Radiation Research, ISSN: 17284554, Impact factor: 0.26
  27. Ben Byju S, Sunil A, Reeba Maria Jose, Christa E Pereira, Vaidyan V K, Prasad R and Jojo P J (2012)
    Uranium in drinking water from the south coast districts of Kerala, India.
    Iranian Journal Radiation Research     10(1) 31-36.
  28. Christa E P, Jojo P. J., Vaidyan V.K., Anilkumar S and Eappen K P. (2012)
    Gamma radiation dose in the high background radiation area in Kerala, India,
    Radiation Protection Dosimetry 148(4) 482-486. doi:10.1093/rpd/ncr198.
  29. Ben Byju S, Sunil A, Reeba Maria Jose, Christa E Pereira and Jojo P. J. (2011)
    Radioactivity in flora in the high background radiation area in Kerala Research Journal of Fatima Mata National College, Kollam (Science Edition) 3(2) 4-8. ISSN 2277-8748.
  30. H. Mahat, Jojo P. J.,  Pereira C. E. and  Amin Y. M. (2011)
    Seasonal Variation of Indoor Radon Concentration in the Tropics: Comparative studies between Kuala Lumpur, Malaysia and Kerala, India. American Institute of Physics Conference Proceedings1328, pp. 107-109; http://dx.doi.org/10.1063/1.3573701 
  31. Reeba Maria Jose, Sunil A,Ben Byju S, Christa E Pereira, Vaidyan V K and Jojo P. J. (2011)
    Heterogeneity of uranium in water from south peninsular India.
    International Journal of Physical Fundamental Research    , 1(1) 11-14. ISSN 2231-8186.
  32. Christa E Pereira, Vaidyan V.K., Sunil A, Ben Byju S, Reeba Maria Jose and Jojo P. J. (2011)
    Radiological assessment of cement and clay based building materials from the southern coastal region of Kerala. Indian Journal of Pure and Applied Physics  49, 372-376.
  33. Shyma Mary Y., Jojo P. J., Sheena Mary Y., Hema Tresa Varghese and Yohannan Panicker C (2011)
    Vibrational spectroscopic and computational study of 2,4-dichlorophenoxyacetic acid, Global journal of analytical chemistry 3 (13) 1-9.
  34. Ushakumary L, Sheena Mary Y Shyma Mary Y., Yohannan Panicker C,Hema Tresa Varghese and Jojo P. J. (2011) Infrared, Raman, surface enhanced Raman scattering and computational study of L-Alanine. Global journal of analytical chemistry 2 (1) 15-20.
  35. Sunil A, Ben Byju S., Jojo P.J. and Ramachandran T.V. (2010)
    Ingestion dose due to uranium in water samples from the southern coast of Kerala.
    Asian Journal of Chemistry 22 (2), 1639-1641.
  36. Mahur A K, Kumar R, Jojo P. J. and Prasad R (2008)
    Estimation of Uranium Levels in water samples around high background region of south India using fission track detection technique. Indian Journal of Environmental Protection 28(12)1065.
  37. Pereira, C.E., Vaidyan, V.K., Jojo, P.J. and Ramachandran, T.V (2008)
    Measurement of  Radon Exhalation Rate from building materials used in the southwest coastal region of India. Indoor and Built Environment 17(5) 471.
  38. Kumar, R., Mahur, A.K., Jojo, P.J. and Prasad, R. (2007)
    Study of radon and its progeny levels in dwellings of Thankassery,
    Indian Journal of Pure and Applied Physics 45, 877-879.
  39. Mahur A. K., Kumar R., Jojo P. J. and Prasad R. (2006)
    Indoor radon levels in some dwellings of Thankassery town in Kerala.
    Journal of Chemical and Environmental Research 15(4) 287-291.
  40. Mahur, A. K., Kumar R, Azam A, Jojo P. J., Prasad R. (2006)
    Radon exhalation rate from different types of building construction materials using SSNTDs and estimation of lung cancer risk. Journal of Chemical and Environmental Research 15(4) 306-12.
  41. Mahur, A.K., Kumar, R., Jojo, P.J., Kumar, A., Singh, A.K., Varshney, A.K., Prasad, R. (2006)
    Radon levels in dwellings of some Indian cities. Asian Journal of Chemistry 18 (5)3371-3375. 
  42. Mahur, A.K., Rajesh Kumar, Prasad R. and Jojo, P.J.(2005)
    Estimation of indoor radon levels in the dwellings along the south west coast of Kerala. Radiation Protection and Environment 28(1-4).
  43. Singh, A.K., Kumar, A., Jojo, P.J. and Prasad R.(1998) Microanalysis of uranium in Indian soil samples using solid state nuclear track detection technique. Journal of Radio analytical and Nuclear Chemistry 238,1-2,21-24. ISSN: 0236-5731. SCI Springer. 
  44. Singh, A.K., Kumar, A., Jojo, P.J. and R.(1997)
    Calibration of track detectors and measurement of radon exhalation rate from solid samples.
    Radiation Protection and Environment 20,3,129. ISSN:0972-0464
  45. Jojo, P.J., Kumar, A., Ramachandran, T.V., Prasad, R. (1995)
    Microanalysis of uranium in Antarctica soil samples using fission track method.
    Journal of Radio analytical and Nuclear Chemistry 191,2,381.
  46. Jojo, P.J., Rawat, A. and Prasad, R.(1994)
    Trace uranium concentration in tubers using wet fission track method.
    Journal of Radio analytical and Nuclear Chemistry 11,4.
  47. Jojo, P.J., Rawat, A. and Prasad, R. (1994)
    Enhancement of trace uranium in fly ash. Nuclear Geophysics (UK) 8,1,55. Elsevier
  48. Jojo, P.J., Khan, A.J., Tyagi, R.K., Ramachandran, T.V., Ramu, M.C.S., Prasad, R. (1994) Interlaboratory calibration of track etches detectors for the measurement of radon and daughter levels.
    Radiation Measurements. 23,4,715.
  49. Jojo, P.J., Rawat, A., Kumar, A. and Prasad, R.
    Trace uranium analysis of water samples from the south west coastal region of India.
    Journal of Radio analytical and Nuclear Chemistry (USA) 178,2,245.
  50. Kumar, A., Jojo, P.J. and Prasad, R.(1993)
    Trace Uranium concentration in tubers using wet fission track method.
    Journal of Trace and Microprobe Technique11(4) 317-326.
  51. Kumar, A., Jojo, P.J. and Prasad, R. (1993)
    .92MeV/n 197Au ion track registration characteristics in CR-39 (DOP).
    GSI Darmstadt Report – 1992 (Germany) 289.
  52. Jojo, P.J., Rawat, A., Kumar, A. and Prasad, R. (1994)
    Trace Uranium analysis in India coal samples using fission track technique.
    Nuclear Geophysics (UK) 7,3,445.
  53. Jojo, P.J., Kumar, A. and Prasad, R.
    Response of Markofol-KL Polycarbonate to 11.50 MeV/n 136Xe ions (1992)
    GSI Darmstadt Report – 1991(Germany) 28.
  54. Rawat, A., Jojo, P.J., Kumar, A. and Prasad, R. (1992)Analysis of trace uranium in Indian tobacco samples. Journal of Radio analytical and Nuclear Chemistry (USA) 166(5) 365. 
  55. Bansal, V., Rawat, A., Jojo, P.J. and Prasad, R. (1992)
    Analysing Uranium concentration in drinking water samples in India using fission track technique. Health Physics (USA) 62,3,257.
  56. Rawat, A., Jojo, P.J., Khan, A.J., Tyagi, R.K. and Prasad, R. (1991)
    Radon exhalation rate in building materials. Nuclear Tracks and Radiation Measurement (UK) 19,1-4,391.
  57. Rawat, A., Jojo, P. J., Khan, A. J., Tyagi, R. K. and Prasad, R (1991)
    Radon emanation in building materials International Journal of  Radiation Applications and Instrumentation  391 (1991). Elsevier SCI
  58. Rawat, A., Jojo, P.J., Tyagi, R. K. and Prasad R (1990)
    Study of radon and its daughters emitted from building materials using plastic track detectors.  Bulletin of Radiation Protection (India) 13,2,16.

Book Publications (As Co-author)

. Practical Physics. Published by Vidhyarthimithram, India (2001) Text Book

  1. Physics Text Book for +2, State Council for Education Research and Training,
    Government of Kerala, India (2008)
  2. Mindscape – a compendium of enduring values for Gen-Next, Published by Fatima Mata
    National College, Kollam (2010)
  3. Study of radon diffusion through clay bricks. Proceedings of the thirtieth IARP conference on radiological protection and safety in nuclear reactors and radiation installations Vol 44 Issue 25 (2012)

Book Publications( As Editor)

  1. Proceedings of National Seminar on Nanoscience and Technology (NSNST-2009) Published by Department of Physics, Fatima Mata National College, Kollam.
  2. General Physics ISBN 978-93-5196-932-7
  3. Objectives in Advanced Physics Part-1 ISBN 978-93-5196-933-4
  4. Objectives in Advanced Physics Part-2 ISBN 978-93-5196-934-1
  5. Objectives in Advanced Physics Part-3 ISBN 978-93-5196-935-8

Lectures in National and International Conferences

  • Presented research papers in 91Conferences
  • 20 International Conferences and
  • 10 invited talks + 1 Keynote address.
  • I have organized 2 national seminars, several regional seminars and a state level Quiz program for college students (Lumos).
Seminars attended
  1. Workshop on Science and Practice of Nondestructive Evaluation Techniques, Fatima Mata National College, Kollam 18 February 1995
  2. Seminar on alternative energy sources, Cochin University of Science and Technology, 10-11 November 1997
  3. Seminar on Non-linear Optics and Spectroscopy, Department of Physics, Fatima Mata National College, Kollam 12-14 January 1998
  4. Workshop on Research activities with ion beams at NSC, Department of Physics, University of Kerala 5-6, February 1999
  5. Workshop on C language. Department of Physics, Fatima Mata National College, Kollam 2-6 November 1999
  6. Workshop on advanced Practicals in Physics, Department of Physics, Fatima Mata National College, Kollam 23-25 October 2000
  7. Seminar on non-linear dynamics, Department of Physics, Fatima Mata National College, Kollam 19-20 January 2001
  8. National workshop on Progressive Initiatives of Autonomous Colleges towards Excellence in Global Education, PSG College of Arts and Science, Coimbatore, 18-20 March 2004
  9. National workshop on Post graduate experiments in Electronics, HH The Maharaja’s College for Women, Thiruvananthapuram 15-17 December 2004
  10. International Seminar on High Background radiation area studies, Amrita Institute of Medical Sciences, Cochin 12 May 2005
  11. Seminar on Quantum theory of molecules, Department of Physics, Fatima Mata National College, Kollam 28-29 August 2006
  12. Orientation on Youth Development for College Principals and Teachers University of Kerala, 5 October 2006
  13. Spetrum2007, National Conference on Spectroscopy, Department of Physics, Marthoma College, Thiruvalla 15-16 March 2007 (Local Organising Committee Member)
  14. Epidemiological Studies for Risk Assessment: Methods and Perspectives (EPIDERM-2007) Bhabha Atomic Research Centre, Mumbai 5-6 September, 2007
  15. Capacity building for Effective Internal Quality Systems in Higher Education Institutions. Sponsored by National Accreditation and Assessment Council (NAAC) St.Xavier’s College, Aluva 21-22, November 2007.
  16. National Seminar on Nanoscience and technology (NSNST-2009) sponsored by Council for Scientific and Industrial Research New Delhi and Science Technology and Environment Department, Fatima Mata National College, Kollam (Coordinator) 23-25 March 2009.
  17. Seminar on Introductory Astronomy and Astrophysics, Department of Physics, Fatima Mata National College, Kollam, 20-22 October 2011
  18. National Seminar on Physical and bio-medical applications in nano technology (NSNANO-2011) 12-14 October 2011, Department of physics, Sree Narayana College,Kollam
  19. National Seminar on “Higher Education 2.0 – Illumine the Future” Kerala State Higher Education Council, Thiruvananthapuram, 4-5, June 2012
Refresher & Orientation Courses attended
  1. Orientation Course in Multidiscipline. UGC Academic Staff College, University of Kerala, Thiruvananthapuram. 19 may 1997 to 13 June 1997
  2. Refresher courses in Physics, Department of Physics, Cochin University of science and Technology, Cochin 1 February 1999 to 26 February 1999
  3. Short-term course on Maintenance of electrical and electronic equipments, University Science Instrumentation Centre, University of Kerala, Thiruvananthapuram. 16 October 2000 to 21 October 2000
  4. Refresher courses in Physics , UGC Academic Staff College, University of Kerala, Thiruvananthapuram. 29 January 2005 to 18 February 2005
  5. Orientation on Youth development for College Principals and Teachers, Centre for Adult, Continuing Education and extension, University of Kerala, Thiruvananthapuram 5 October 2006
  6. Refresher courses in Physics , UGC Academic Staff College, University of Kerala, Thiruvananthapuram. 14 February 2007 to 07 March 2007
  7. Refresher course in Experimental Physics, Indian Academy of Sciences, organized by Mar Ivanios College, Trivandrum 22 October, 2007- 3November,2007.
  8. Assessment of course & Program outcomes, Faculty of Science, University of Malaya, 19 October 2010.