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Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

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  • ThesisItemOpen Access
    Production of radionuclides 55,59,60 Fe in fusion reactor environment
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-07) Joshi, Vipin Chandra; Pandey, Bhawna
    Immense nuclear data is essential for the advancement of fusion reactors. Ongoing research investigations are on the way that will lead to a commercial fusion reactor. The study of radionuclides generated in the fusion reactor is of great importance. A lot of essential nuclear data can be extracted from the produced radionuclides in the reactor. Present research work is associated with the production pathways (inventories) and amount or activity of radionuclides of iron(55Fe, 59Fe, 60Fe) produced in the fusion reactor during its operation. The study is concentrated on production pathways and the cross section for the formation of radioisotopes 55Fe, 59Fe & 60Fe. These radionuclides are produced when a 14.1MeV neutron from the D-T plasma interacts with the wall material of fusion reactor. The Amount of these radionuclides produced through major pathways is calculated. The production cross sections via each pathway are calculated using the latest version of nuclear modular code TALYS-1.9. These cross sections are also compared with the experimental data available from EXFOR and evaluated nuclear data libraries. The pathway of maximum yield for the production of these radionuclides is identified. Some of the 14.1MeV neutrons interact with the reactor wall material and displace the atoms from their positions in crystal lattice, recoil spectra of daughter nuclei are crucial. Present investigation reveals that the radionuclides 55,59,60Fe are produced in the fusion reactor in sufficient amount that is harmful for the reactor health. The amount(activity) of radionuclides, major pathways, production cross section study is also included in details.
  • ThesisItemOpen Access
    Study of swift heavy Ion irradiation induced effect on Gadolinium doped Nickel Ferrite
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-07) Sidana, Upasana; Dixit, Gagan
    Swift Heavy Ion Irradiation is very unique tool to modify the properties of material. Present work is an attempt to study the effect of 200 MeV Ag ion induced modification on structural and optical properties of 4% Gd doped Nickel ferrite nanoparticles. SRIM calculations showed that the electronic energy loss for 200 MeV Ag ions is much greater than threshold value. Therefore, columnar defects are expected to occur. The samples were synthesized by chemical route using citric acid. Structural and optical properties are studied using XRD, FTIR and UV-Vis Spectroscopy. XRD confirmed the cubic spinel structure of pristine and irradiated samples. After irradiation, crystallite size decreases while there is a slight increase in lattice parameter with increasing fluence. Lattice strain was found to increase with increasing fluence of irradiation. X-Ray Density does not change significantly at low fluences but decreases at high fluences which confirm the presence of defects in the sample after irradiation at high fluence. FTIR spectra also confirm pure spinel phase of the samples. Variation of FTIR band position and FWHM supports XRD result that significant changes in structural parameters can be observed at high fluence of irradiation. The reflectance spectra recorded by UV-Vis spectroscopy show two direct band gaps in all samples. The two band gap energies are due to the co-existence of high spin and low spin states. Both the band gaps were found to increase with irradiation fluence.
  • ThesisItemOpen Access
    Structural & optical study of oxygen irradiated Cerium doped Nickel Ferrite
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Joshi, Lekha; Dixit, Gagan
    Swift heavy ions of various energies are being used for material modifications. The induced modifications depend on the kind of defects produced during interaction of ions with target material. In the present work, structural and optical properties of Oxygen irradiated NiFe1.96Ce0.04O4 have been studied. NiFe2O4 nanocrystals doped with 4% Cerium ions were synthesized by chemical route using nitrates of Fe, Ni and Ce with citric acid. The sample was irradiated at 1×1012 ions/cm2, 5×1012 ions/cm2, 1×1013 ions/cm2 and 2×1013 ions/cm2. SRIM calculation show that electronic energy loss is less than the threshold value for O beam, so point defects are expected in the system. Structural characterization were performed using XRD and FTIR Spectroscopy & optical properties were studied by UV-Vis spectroscopy in DRS mode. The cubic spinel structure of sample was confirmed by XRD and IR spectra. All the parameters estimated from XRD patterns, show changes only at the fluence of 5×1012 ions/cm2. UV-Vis spectra show two direct band gaps for all samples corresponding to both low and high spin electrons. Band gaps were found to be higher for sample irradiated at 2×1013 ions/cm2 fluence in comparison to that of pristine sample. It can be concluded that 100 MeV Oxygen irradiation enhances the optical band gap of Ce doped nickel ferrite nanoparticles without producing any structural distortion up to the fluence of 2×1013 ions/cm2.