1. Usman, R., U. Ibrahim, S.D. Yusuf, I.M. Mustapha, E.I. Ugwu and O.S. Ayanninuola, 2022. Identification of medical and industrial used radioisotopes in mining sites of Nasarawa, Nasarawa State, Nigeria. J. Oncol. Res., 4: 27-33.
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2. Ugwu, E.I., U. Rilwan and R. Bello, 2022. Analytical study of the behavioral trend of charged particle interacting with electromagnetic field: Klein-gordon/dirac equation. Int. J. Theor. Comput. Phys., Vol. 3. .
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3. Usman, R., A.U. Maisalatee and M. Alpha, 2021. Modification of the interior solution of Einstein's G22 field equation for a homogeneous spherical massive bodies whose fields differ in radial size, polar. J. Phys. Astron., Vol. 9. .
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4. Ugwu, E.I., S.I. Nworie and N.E.J. Omaghali, 2021. Influence of variation of aluminium doping concentration and annealing temperature on the structural, morphological and dielectric constant of ZnO thin film grown using chemical bath deposition process. J. Appl. Mater. Sci. Eng. Res., 5: 15-20.
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5. Rilwan, U., L.K. Sabiu, I. Umar, S.D. Yusuf and E.I. Ugwu, 2021. Assessment of radiation dose in computed tomography examination of adult patient in Abuja and Keffi, Hospitals in Nigerian. Nucl. Med. Radiat. Ther., Vol. 12. .
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6. Rilwan, U., A.U. Maisalatee, E.I. Ugwu, O.G. Okara, S. Muhammad, A. Ubaidullah and H. Abdulrahman, 2021. Modification of the exterior and interior solution of Einstein’s G₂₂ field equation for a homogeneous spherical massive bodies whose fields differ in radial size, polar angle, and time. Int. J. Theor. Comput. Phys., .
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7. Rilwan, U., A. Hudu, A. Ubaidullah, A.U. Maisalatee, A.A. Bello, E.I. Ugwu and G.O. Okara, 2021. Fertility cancer and hereditary risks in soil sample of Nasarawa, Nasarawa State, Nigeria. J. Oncol. Res., 3: 22-27.
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8. Maisalatee, U., U. Rilwan and E.I. Ugwu, 2021. Einstein’s Equation of motion for exterior test particles with spherical mass distribution having varied field, time and radial distance; Golden metric tensors approach. Int. J. Theor. Comput. Phys., Vol. 2. .
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9. Ugwu, E.I., 2020. Comparative study on the influence of different growth mechanisms on the structural and optical properties of aluminum doped zinc oxide thin film, AlZnO. Pac. J. Sci. Technol., 21: 45-51.
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10. Nworie, S.I. and E.I. Ugwu, 2020. Study of the optical characteristics of aluminum doped ZnO thin film. Pac. J. Sci. Technol., 21: 40-44.
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11. Ugwu, E.I., 2019. Theoretical analysis of the influence of the refractive index on electromagnetic wave propagating through manganese sulphide [MnS]. Nanomed. Nanotechnol. Open Access, Vol. 3. 10.23880/nnoa-16000153.
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12. Ugwu, E.I., 2019. Comparative study of the variation of the influence of temperature on carrier concentration and electron drift on silicon and gallium arsenide. Nanomed. Nanotechnol. Open Access, Vol. 4. 10.23880/nnoa-16000162.
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13. Ugwu, E.I., S.D. Songden and Y.Y. Jabil, 2017. Attenuation of electromagnetic wave propagating through roofing sheet: Aluminum, zinc and asbestos. Am. J. Electromagnetics Applic., 5: 7-13.
14. Ugwu, E.I., 2017. Analytical study of electromagnetic wave diffraction through a circular aperture with fringes on a perfect conducting creen. Int. J. High Energy Phys., 3: 33-40.
15. Ugwu, E., 2017. Optical and solid state properties of Manganese Sulphide (MnS) thin film, theoretical analysis. Int. J. Multiphys., 11: 137-150.
16. Ugwu, E.I. and C. Okeke, 2016. Iterative computational scheme of studying electromagnetic wave propagation through dielectric thin film medium. Int. J. Multiphys., 5: 267-274.
17. Ugwu, E., I. Kevin and J. Okwo, 2016. Analytical study of electromagnetic wave behaviour in FCC latice periodic material: Bloch theorem of Maxwell's equation. Int. J. Multiphys., 9: 377-386.
18. Ugwu, E.I., O. John, O.D. Ugadu and E.J. Elom, 2015. Analytical study of the band gap and characteristics of copper sulphide thin film: Experiment and computation. Int. J., 5: 42-45.
19. Ugwu, E.I., D.U. Onah and D.A. Famuyibo, 2015. Analytical study of wavepropagating through homogenous oxide based thin films. AASCIT J. Nanosci., 1: 84-90.
20. Oroke, E.C., F.S. Nworie, E.I. Ugwu, S. Akpa and S.O. Ngele, 2015. Physicochemical and colorimetric determination of arsenic concentrations in some selected boreholes in Abakaliki and Ebonyi local government areas Ebonyi State, Nigeria. J. Chem. Pharm. Res., 7: 6-11.
21. Onah, D.U., E.I. Ugwu and J.E. Ekpe, 2015. Optical properties of nanocrystalline TiO2/CuO core-shell thin films by thermal annealing. Am. J. Nano Res. Applic., 3: 62-65.
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22. Echi, I.M., E.J. Eweh and E.I. Ugwu, 2015. Approximate calculation of ambipolar-drift electric field across magnetic field in a long cylindrical plasma. Res. J. Phys., 3: 20-25.
23. Ugwu, E.I., 2014. Theoretical analysis of the optical and solid state properties of zinc sulfide thin film. J. Emerging Trends Eng. Applied Sci., 5: 106-110.
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24. Ugwu, E.I. and A. Dickson, 2014. Analysis of the effect of blending Nigeria pure clay with rice husk: A case study of Ekulu Clay in Enugu state. Am. J. Mater. Eng. Technol., 2: 34-37.
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25. Maliki, O.S. and E.I. Ugwu, 2014. On q-deformed calculus in quantum geometry. Applied Math., 5: 1586-1593.
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26. Lucky, O., N.E. Idenyi, O.N. Michael and E.I. Ugwu, 2014. Comparative analysis of corrosion behavior of martesitic and annealed stainless in H₂SO₄ and NaOH. Chem. Mater. Solid, 6: 78-86.
27. Adlinen, N.N. and E.I. Ugwu, 2014. Analytical study of electrocapillarity driven flow using palm oil. Int. J. Phys. Sci., 2: 83-85.
28. Ugwu, E.I., J.E. Ekpe, E. Nnaji and E.H. Uguru, 2013. Theoretical study of electromagnetic wave propagation: Gaussian bean method. Applied Math., 4: 1466-1470.
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29. Ugwu, E.I., H.U. Igwe, D.U. Onah and N.N. Nwafor, 2013. Optimization of optical properties of annealed cadmium selenide (CdSe) thin films grown by chemical bath deposition technique. Adv. Phys. Theories Applic., 18: 9-13.
30. Ugwu, E.I., C.E. Ikeogu and M.I. Echi, 2013. Study of electromagnetic wave propagation in periodic dielectric structure: MathCAD analysis. Commun. Applied Sci., 1: 201-209.
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31. Ugwu, E.I. and N.S.O. Maliki, 2013. Assessment of electromagnetic wave propagation through copper (Ii) Oxide, Cuo thin film with dielectric perturbed medium. Int. J. Eng. Innov. Technol., 3: 35-39.
32. Ugwu, E.I. and M.I. Echi, 2013. Analytical study of band structure of material using relativistic concept. J. Applied Math., 4: 1287-1289.
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33. Stephen, E., E.I. Ugwu and P.E. Agbo, 2013. Theoretical analysis of the influence of the thermal diffusivity of ceramic tile on the thermal energy distribution. Commun. Applied Sci., 1: 2010-2029.
34. Hilary, U.I. and E.I. Ugwu, 2013. Influence of the annealing temperature on optical and solid state properties of lead selenide (PbSe) thin film grown by chemical bathdepossition technique. J. Ovonic Res., 8: 147-154.
35. Adline, N.A. and E.I. Ugwu, 2013. The study of the efficiency of silicon solar cell. Int. J. Eng. Innov. Technol., 3: 641-642.
36. Ugwu, E.I., V.O.C. Eke and O.E. Onyekachi, 2012. Study of the impact of dielectric constant perturbation on electromagnetic wave propagation through material medium: MathCAD solution. Chem. Mater. Res., 2: 1-10.
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37. Ugwu, E.I., O.C.E. Vincent and E. Onyekachi, 2012. Analysis of dielectric constant of optical properties of magnesium. Beam propagation approach. Greener J. Phys. Sci., 2: 50-55.
38. Ugwu, E.I., D.U. Onah, D. Oboma and V.O.C. Eke, 2012. Analysis of characteristic of free particles: Relativistic concept. J. Mod. Phys., 3: 1394-1397.
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39. Kalu, P.C., E.O Ekpe and E.I Ugwu, 2012. Study of indoor temperature of house in Abakaliki, Nigeria. Greener J. Phys. Sci., 2: 27-35.
40. Ugwu, I.E., E.E. Chinedu and E.I. Ndubuisi, 2011. Exact dielectric constant of inhomogeneous crystal and its influence on propagation of electromagnetic (EM) wave: A quantum mechanical approach. Int. J. Phys. Sci., 6: 7416-7419.
41. Ugwu, E.I., S.O. Maliki and M.A. Elebe, 2011. Computational study of wave propagation through a dielectric thin film medium using WKB approximation. Am. J. Sci. Ind. Res., 2: 547-551.
42. Ugwu, E.I., C.E. Okeke and O. Elechi, 2011. Study of wave propagation through thin film: Analysis and assessment of dielectric function and refractive index. Adv. Applied Sci. Res., 2: 642-651.
43. Ugwu, E.I., 2011. Computational method of studying the field propagation through an inhomogeneous thin film medium using lippmann-schwinger equation. Trend Applied Sci. Res., 6: 73-80.
44. Maliki, S.O. and E.I. Ugwu, 2011. A note on gravitational radiation with geometric constraints. Adv. Applied Sci. Res., 3: 1361-1364.
45. Agbo, G.A., Baba Alfa, E.I. Ugwu and R.L. Njinga, 2011. Temperature variability in Abuja-Ngeria correlated with solar radio flux. Nig. J. Space Res., 10: 28-33.
46. Ugwu, E.I., G.A. Agbo and V.O.C. Eke, 2010. Analytical study of formulation for electromagnetic wave scattering behaviour on a cylindrically shaped dielectric material. Res. J. Applied Eng. Technol., 2: 307-313.
47. Ugwu, E.I., 2010. Theoretical study of field propagation through a nonhomogeneous thin film medium using lippmann-schwinger equation. Int. J. Multi-Phys., 4: 305-315.
48. Ugwu, E.I. and M. Elebe, 2010. Analytical study of current density on homogeneous conductor using relativistic and non-relativistic approach. Adv. Applied Sci. Res., 1: 259-264.
49. Onah, D.U., E.I. Ugwu and S.M. Idenyi, 2010. Study of optical, solid state and structural properties of Nickel Sulphide (NiS) thin films deposited using solution growth technique. J. Nig. Assoc. Math. Phys., 17: 393-398.
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50. Onah, D.U. and E.I. Ugwu, 2010. Factors which predict performance in secondary school physics in Ebonyi north educational zone of Ebonyi State, Nigeria. Adv. Applied Sci. Res., 1: 255-258.
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51. Nwadibia, N.O., E.I. Ugwu and K.A. Aduloju, 2010. Theoretical analysis of the influence of the thermal diffusivity of clay soil on the thermal energy distribution in clay soil of Abakaliki, Nigeria. Res. J. Applied Sci. Eng. Technol., 2: 216-221.
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52. Igwe, H.U., O.E. Ekpe and E.I. Ugwu, 2010. Effects of thermal annealing on the optical properties of titanium oxide thin films prepared by chemical bath deposition technique. Res. J. Applied Sci. Eng. Technol., 2: 447-451.
53. Igwe, H.U. and E.I. Ugwu, 2010. Optical Characteristics of nanocrystaline thermal annealed tin oxide (SnO₂) thin film samples prepared by chemical bath deposition technique. J. Adv. Applied Sci. Res., 1: 240-246.
54. Ugwu, E.I., S. Okorie and E.A. Umahi, 2009. The effect of ZnS thin film's electrical conductivity on electromagnetic wave propagated through it. J. Nig. Assoc. Math. Phys., 15: 337-344.
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55. Ugwu, E.I., C.E. Ekuma and H.U. Igwe, 2009. The study of the optical property of copperbased chalcopyrite semiconductors. J. Nig. Assoc. Math. Phys., 15: 337-344.
56. Ugwu, E.I., A.S. Olayinka and F.I. Olabode, 2009. Analysis of wave propagation in a homogeneous dielectric crystal. J. Eng. Applied Sci., 4: 126-131.
57. Ugwu, E.I., 2009. Analytical study of electromagnetic wave scattering behaviour using Lippmann-Schwinger equation. Int. J. Phys. Sci., 4: 310-312.
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58. Owoh, B. and E.I. Ugwu, 2009. Growth and optical characterization of antimony Selenide Sb₂Se₃ thin film using chemical bath deposition technique. J. Metallurgical Mater. Eng., 4: 38-42.
59. Onah, D.U. and E.I. Ugwu, 2009. Optical characteristics of crystalline antimony sulphide (Sb 2 S 3) thin film. J. Nig. Assoc. Math. Phys., 15: 349-354.
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60. Nwali, N.P. and E.I. Ugwu, 2009. Optical properties of chemical bath deposited Cu₂S thin Film within UV, visible and NIR radiation. J. Metallurgical Mater. Eng., 4: 26-30.
61. Igwe, H.U., O.E. Ekpe and E.I. Ugwu, 2009. Effect of thermal annealing on the optical properties of nickel oxide thin films prepared by chemical deposition technique. J. Eng. Applied Sci., 10: 806-811.
62. Ugwu, E.I., K.O. Agwu and H.M. Ogbu, 2008. Assessment of radioactivity content of quarry dust in Abakaliki, Nigeria. Pacific J. Sci. Technol., 9: 208-211.
63. Ugwu, E.I., 2008. Alternative solution of delta-function potential by Green‟s function and Renormalization. J. Eng. Applied Sci., 4: 15-17.
64. Ugwu, E.I. and H.M. Ogbu, 2008. Analysis of the rule of molecular polarizability in the study of the dielectric behaviour of Liquid. J. Sci. Technol., 9: 189-195.
65. Onah, D.U., E.I. Ugwu and B.O. Ekuma, 2008. Solution growth and characterization of copper oxide thin films. Nig. J. Phys., 20: 251-255.
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66. Ugwu, E.I., P.C. Uduh and G.A. Agbo, 2007. The effect of change in refractive index on wave propagation through (FeS2) thin film. J. Applied Sci., 7: 570-574.
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67. Ugwu, E.I. and G.A. Agbo, 2007. Wave propagation in non-homogeneous thin films of slowly varying refractive index: W.K.B solution model. Pacific J. Sci. Technol., 8: 246-251.
68. Ugwu, E.I. and D.U. Onah, 2007. Optical characteristics of chemical bath deposited CdS thin film characteristics within UV, Visible and NIR radiation. Pacific J. Sci. Technol., 8: 155-161.
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69. Nweke, E.S. and E.I. Ugwu, 2007. Analysis and characterization of clay soil in Abakaliki, Nigeria. Pacific J. Sci. Technol., 8: 190-193.
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70. Ugwu, E.I., 2006. Optical properties of iron halide (FeCl₂) thin film deposited using solution growth technique (SGT). Pacific J. Sci. Technol., 7: 97-102.
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71. Ugwu, E.I., 2006. Effect gas flaring on temperature variation at Oyigbo in river. J. Applied Nat. Sci., 1: 75-79.
72. Ugwu, E.I. and S.I. Okeke, 2006. The difference in treatment of thin films that are considered to be spherical model. Pacific J. Sci. Technol., 2: 65-72.
73. Igwe, U.H. and E.I. Ugwu, 2006. Analysis of the transparency of the sky at the Eastern part of Nigeria using Abakaliki as a case study. J. Nat. Sci., 1: 96-100.
74. Ekuma, C.E., E.I. Ugwu and N.E. Idenyi, 2006. Adsorption density and spectra distribution of adsorbed lysozyme as a function of pH and temperature. J. Applied Sci., 6: 1982-1985.
75. Ugwu, E.I., 2005. Environment pollution from motor vehicle emissions. J. Eng. Applied Sci., 2: 57-64.
76. Ugwu, E.I. and P.C. Uduh, 2005. The behaviours of reflected fringe of absorbing feS₂THIN coated on fabry-parrots interferometer. J. Eng. Applied Sci., 2: 178-184.
77. Ugwu, E.I. and P.C. Uduh, 2005. Principal linear polarization state of highly reflecting thin film optical system. J. Eng. Applied Sci., 2: 103-107.
78. Ugwu, E.I. and N.E. Idenyi, 2005. Obtaining the green's function for electromagnetic waves propagating in layered in-homogeneous thin film media of spherical particles on a substrate. Nig. J. Phys., 17: 11-15.
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79. Ugwu, E.I., C.E. Okeke and S.I. Okeke, 2001. Study of the UV/optical properties of FeS₂ thin films deposited by solution growth techniques. J. Eng. Applied Sci., 1: 13-20.
80. Ugwu, E.I., A.E. Eze and R.N. Ugwu, 2000. Relative efficacy of using advance organizers in teaching physics concepts in secondary schools education ESUT. J. Educ., 3: 83-94.