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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
    Nuclear reactions relevant to fusion reactor candidate materials
    (G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand. PIN 263145, 2022-09) Navita; Joshi, G.C.
    There is a possibility to develop the fusion reactors which may offers the prospect of a long-term energy production. For the development of a fusion reactor the reactor material should have low radioactivity and high capacity to endure neutron flux. To predict material damages by nuclear reactions and model the reactor design, accurate and high-quality cross-section data are required. The present study is motivated to investigate the production cross-section of 53Mn due to neutron induced reactions on stable and unstable target nuclei as well as charge particle induced reactions on stable target nuclei with the help of a nuclear modular code TALYS-1.9. It is observed that neutron as well as charge particle induced reactions play an important role in the production of 53Mn. Moreover, the production cross-sections of 54Mn, 55Fe, 59Ni and 60Co via charged particle induced reactions have been calculated by TALYS-1.9. Default input parameters and all the six ldmodels have been used in the calculation of production cross-sections. The contribution of direct, pre-equilibrium and compound nucleus reaction to the total reaction cross-section are also studied and it is found that the contribution of compound nucleus reaction is high in comparison to direct and pre-equilibrium reaction. Energy differential cross-section (EDX) and double differential cross-section (DDX) of the natural Molybdenum for (n,xp) and (n,xα) reaction at 14.1 MeV neutrons energy has been calculated by optimizing input parameters of TALYS-1.9. From EDXs calculation, it is found that most of the outgoing protons and alpha particles have energy 5 MeV and 13 MeV respectively. DDXs calculated at 10º, 30º,60º, 90º and 120º shows anisotropical distribution of outgoing proton and alpha particles. In addition to the above, recoil spectra, displacement per atom cross-section and gas production (hydrogen and helium) cross-section for 90Zr, 93Nb, 98Mo, 180Hf, 181Ta and 184W have been calculated to estimate the reactor material damage. NRT method has been used to calculate displacement per atom cross-section. Recoil spectra show that (n,n’) and (n,2n) reaction channels are major cause to produce recoil nuclei. Gas production (hydrogen and helium) cross-section infers that production cross-section of hydrogen is higher than the production cross-section of helium. From above, it is concluded that nuclear modular code TALYS-1.9 is a powerful code to predict the cross-sectional data of long-lived radionuclides induce by neutron as well as charged particles and damage produced during reactor operation, which is important to develop fusion reactor design.
  • ThesisItemOpen Access
    (n, d) reaction cross-section for materials of interest in fusion technology
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-08) Sati, Tanmay; Pandey, Bhawna
    Neutron induced cross-sections in the energy range up to 20 MeV play a very important role for the design and functional operation of the fission, fusion and accelerator driven reactor. Neutrons of average energy 14.1 MeV is emitted in the D-T fusion reaction and these neutrons can react with the reactors structural material and thus there is a need to study the neutron induced reactions. The neutron interaction cross-section data in the energy range below 20 MeV is of importance for shielding design, structural materials damage studies, reactor safety, designing of next generation D-T reactors and in the management of nuclear waste. The candidate structural material for the critical components of the fusion reactor is stainless steel with Ni, Fe and Cr as the main constituents. The present study consists of the calculation of cross-section, differential crosssection. (DX) and double differential cross-section (DDX) for the isotopes of Nickel (58,60Ni); Iron (54,56Fe) and Chromium (50,52Cr) below 20 MeV using TALYS-1.9. The obtained cross-sections data are then compared with the data from nuclear data libraries (EXFOR, ENDF, JEFF, JENDL and TENDL). The contributions of direct, stripping, pre-equilibrium and compound reactions mechanism to the total cross-section for the (n, d) reaction is studied.
  • ThesisItemOpen Access
    Study for the effect of size and shape on nanomaterials
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Joshi, Riya; Munish Kumar
    Nanomaterials had attracted researchers towards themselves because of their unique, intriguing, and promising features that differ from those of the bulk, nanoparticle systems are currently a fascinating area which has its application in wide range from medical field to agricultural field. High pressure applications of nanomaterials drew interest of reasearchers in this field. We have applied here Kumar EOS on nano and bulk materials to study their behavior. We have studied the pressure dependence of V/Vo and Bulk Modulus for various materials of different shapes and sizes for which experimental data was available. The materials used here are IF-WS2, NT-WS2, B12As2, Na2O, Pb, NaCl and LiF. Thus the present study reflects the sustainability and applicability of theory for nano as well as bulk materials as far as recent experimental information is concerned. Thus, it seems that we have a simple theory to study the different properties of nanomaterials depending on size and shape. The theory can also be used for bulk materials. We obtained the relation, which gives the size and shape dependence of θD , we computed the size dependence of θD for Co and Au. The results obtained are reported alongwith the available experimental data and comparision of present study with Qi Model is done which shows present study gives better agreement with the experimental data as compared with Qi Model. The size and shape dependence of θD for different nanomaterials viz. Au, Se, Co, Si, Al and Fe are reported.
  • ThesisItemOpen Access
    Role of pre-equilibrium effect in (n, α) reactions for fusion materials
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Singh, Ajay; Pandey, Bhawna
    The neutron interaction cross-section in the energy range below 20 MeV is very important for the reactors i.e. fusion and fission. Recently, the theoretical understanding of nuclear reactions has acqiured a considerable degree of reliability. Hence it can be used for interpolation and extrapolation, consistency checks for experimenatal data and reasonably accurate prediction of unmeasureable data. The present thesis work consists of opting optical model potential, preequilibrium model and in carrying out hauser-Feshbach statistical model based calculations of cross-section for (n, α) rections on isotopes of Mo, Zr and W. The preequilibrium effect plays very prominent role in cross-section. Therefore, we have studied the cross-section with equilibrium effect and without the pre-equilibrium effect in (n, α) by using the TALYS 1.9. Then, this is compared with the experimental data and evaluated data from ENDF/B-VII.0, JEFF-3.3, JENDL-5. It can be conlcluded that (n, α) reactions proceeds through compound reaction mechanism at low energy. The consistency of calculated data from the TALYS 1.9 is checked by experimental crosssection data around 14 MeV of neutron.
  • ThesisItemOpen Access
    Waste-water treatment by microwave irradiated exfoliated graphite
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Negi, Vivek; Joshi, Deepika P.
    Oil is widely used in many industries, household needs, and for ignition purposes, whereas dyes are largely used by industries for colouring purposes. Due to their great use, the discharge of wastewater containing oil and dyes to water bodies and accidental oil spills cause enamours damage to the environment. The serious impact of wastewater led to the utmost urgency to treat wastewater containing oil and dye. Exfoliated graphite (EG) has gotten high attention for adsorbing oil from oily water and titanium dioxide (TiO2) nanoparticles have shown great potential to work as an excellent photocatalyst in dye degradation. Therefore in order to treat wastewater containing both oil and dye as pollutants, the present work is an effort to synthesize the composite of EG and TiO2 nanoparticles. EG has been synthesized by exfoliation of GIC by microwave irradiation. GIC has been prepared by chemical intercalation technique. Different EG samples have been prepared by varying exfoliation times. An oil adsorption study has been performed for mustard oil, diesel oil, and engine oil on different EG samples for different contact times. The results revealed that EG adsorbs oil up to its maximum capacity within 5 minutes. The adsorption capacity of different EG samples on different oil has been calculated and it is concluded that an exfoliation time of 1.5 minutes (sample EG3) is sufficient to achieve maximum adsorption capacity and a further increase in exfoliation time makes no change in adsorption capacity indicating that complete exfoliation has been achieved in 1.5 minutes. For each EG sample, adsorption has been found to be directly proportional to the viscosity of the oil. TiO2 nanoparticles have been synthesized by the sol-gel method. UV visible spectra of TiO2 nanoparticles show high absorption in the UV region. EG3/TiO2 composite has been synthesized by exfoliating TiO2-loaded GIC for 1.5 minutes. The synthesized materials have been characterized by XRD, FTIR, FESEM, and gas adsorption isotherm. XRD and FTIR study shows the presence of EG and TiO2 in the composite and no chemical reaction has occurred between them. From the FESEM image, it has been confirmed that the composite has a porous structure just like EG3, with TiO2 particles present on its surface. From the gas adsorption isotherm, the specific surface area of EG3 and EG3/TiO2 composite has been found out 12.5 m2/g and 47.7295 m2/g respectively. Pore size distribution shows a large number of micropores present in EG and EG3/TiO2 composite. A comparative study of EG3, TiO2 nanoparticles, and EG3/TiO2 composite for treatment of oil and dye polluted wastewater has been performed in direct sunlight. Dye degradation has been studied by UV visible spectroscopy of treated water with different materials. The results show that EG3 has removed only oil, TiO2 nanoparticles are only able to degrade dye but EG/TiO2 composite is able to remove oil as well as to degrade dye from the polluted water. Hence, the EG3/TiO2 composite proposed in the present work can be a novel material for the treatment of both oil and dye polluted wastewater.
  • ThesisItemOpen Access
    Waste-water treatment by microwave irradiated exfoliated graphite
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Negi, Vivek; Joshi, Deepika P.
    Oil is widely used in many industries, household needs, and for ignition purposes, whereas dyes are largely used by industries for colouring purposes. Due to their great use, the discharge of wastewater containing oil and dyes to water bodies and accidental oil spills cause enamours damage to the environment. The serious impact of wastewater led to the utmost urgency to treat wastewater containing oil and dye. Exfoliated graphite (EG) has gotten high attention for adsorbing oil from oily water and titanium dioxide (TiO2) nanoparticles have shown great potential to work as an excellent photocatalyst in dye degradation. Therefore in order to treat wastewater containing both oil and dye as pollutants, the present work is an effort to synthesize the composite of EG and TiO2 nanoparticles. EG has been synthesized by exfoliation of GIC by microwave irradiation. GIC has been prepared by chemical intercalation technique. Different EG samples have been prepared by varying exfoliation times. An oil adsorption study has been performed for mustard oil, diesel oil, and engine oil on different EG samples for different contact times. The results revealed that EG adsorbs oil up to its maximum capacity within 5 minutes. The adsorption capacity of different EG samples on different oil has been calculated and it is concluded that an exfoliation time of 1.5 minutes (sample EG3) is sufficient to achieve maximum adsorption capacity and a further increase in exfoliation time makes no change in adsorption capacity indicating that complete exfoliation has been achieved in 1.5 minutes. For each EG sample, adsorption has been found to be directly proportional to the viscosity of the oil. TiO2 nanoparticles have been synthesized by the sol-gel method. UV visible spectra of TiO2 nanoparticles show high absorption in the UV region. EG3/TiO2 composite has been synthesized by exfoliating TiO2-loaded GIC for 1.5 minutes. The synthesized materials have been characterized by XRD, FTIR, FESEM, and gas adsorption isotherm. XRD and FTIR study shows the presence of EG and TiO2 in the composite and no chemical reaction has occurred between them. From the FESEM image, it has been confirmed that the composite has a porous structure just like EG3, with TiO2 particles present on its surface. From the gas adsorption isotherm, the specific surface area of EG3 and EG3/TiO2 composite has been found out 12.5 m2/g and 47.7295 m2/g respectively. Pore size distribution shows a large number of micropores present in EG and EG3/TiO2 composite. A comparative study of EG3, TiO2 nanoparticles, and EG3/TiO2 composite for treatment of oil and dye polluted wastewater has been performed in direct sunlight. Dye degradation has been studied by UV visible spectroscopy of treated water with different materials. The results show that EG3 has removed only oil, TiO2 nanoparticles are only able to degrade dye but EG/TiO2 composite is able to remove oil as well as to degrade dye from the polluted water. Hence, the EG3/TiO2 composite proposed in the present work can be a novel material for the treatment of both oil and dye polluted wastewater.
  • ThesisItemOpen Access
    A Study of quaternionic quantized Proca-Maxwell equations
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Gwasikoti, Sumit Kumar; Chanyal, B.C.
    Under this work, we develop the quantum formulation of Proca-Maxwell equations of dyon using quaternionic algebra. The quaternionic algebra is regarded as the four dimensional norm division algebra called as hypercomplex algebra which contains real and imaginary part. The four potential, four current and four fields of dyons are expressed in quaternionic form. We establish an expression for the quaternionic quantized electromagnetic fields of dyon. The quantum Lorenz gauge condition is obtained for the generalized electromagnetic fields of dyon. An approximate relation is expressed for the classical electromagnetic field vector from the quantum electromagnetic field vector. We deduce a set of quaternionic quantized Proca-Maxwell equations for dyon. We express the quaternionic quantized wave equation for dyon which represents an analogous of Klein-Gordon equation. We discuss the quaternionic form of quantized electromagnetic wave equations and the quantum continuity equation for dyon. We have checked the duality invariance for the quantized Proca-Maxwell equations and wave equation for dyon. Hence, it has shown that the quaternionic quantized Proca-Maxwell equations and wave equations are duality invariant. We also discuss the quaternionic formulation of quantized electromagnetic energy for dyon. As such, the Poynting theorem for the field equations of dyon has been developed. As a result, we have concluded that the quaternionic formalism is a simple, compact and preferable way to represent the quantum analogue of generalized electromagnetic field, Proca-Maxwell equations and wave equations of dyon.
  • ThesisItemUnknown
    Adsorptive removal of anionic dye from aqueous solution using chemically activated coconut shell coke
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Semwal, Mansi; Goel, Puja
    Discharge of industrial waste such as dye effluents in water bodies has become a global environmental issue due to the application of dye in daily life. Survival has become challenging with these contaminants for all living beings which directly or indirectly depends on natural water sources as they continuously getting contaminated by related industries. To overcome the issue adsorption has been employed in the present work among several known techniques for dye removal. Commercially available activated carbons are found superior for adsorption but they are expensive. So current work focuses on utilizing agricultural waste for the preparation of activated carbon and coconut shell was taken as raw material. Batch adsorption was performed with different concentration of methyl orange dye (MO) with increasing ACC dose. Later, UV-VIS studies reveal that ACC is highly effective towards the removal of MO and the maximum efficiency of 99% was attained for 10 mgL-1 of MO with 0.5 gm of ACC. Experiment was also conducted with coconut shell soft coke to compare the effect of activation and it gives maximum efficiency of 45 % in 5 mgL-1 MO with 0.5 gm dosage and confirms the outstanding effect of chemical activation performed on coconut shell soft coke by significantly enhancing its efficiency. Study shows the striking results of ACC, so one more batch study was conducted with 0.5 gm of bamboo wood derived coke in both its non-activated (BC) and activated (ABC) form and results were superior than ACC for 5mgL-1 of MO which confirms the bright future of agricultural by-products for making low-cost activated carbons. Moreover, FTIR studies were also carried out to understand the effect on various functional groups present in ACC, MO, solid residue and filtrate. So, the present work demonstrated the potency of agricultural waste to become a successful raw material for the production of highly effective low-cost activated charcoal for the adsorptive removal of dye from water along with the benefits of disposal of waste product.
  • ThesisItemOpen Access
    Investigation of structural, optical and ferroelectric behaviour of NIFE2O4 and YMNO3 composites
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Joshi, Hema; Dixit, Gagan
    Magnetoelectric multiferroic materials are characterized by the property of ME coupling which allows the manipulation of magnetisation in these materials by applying an external electric field and vice-versa. Due to this property, multiferroic materials are widely used in technological applications like sensors, memory devices, microwave applications, solar cells, energy harvesting etc. These materials are being continuously studied to obtain better magnetic and electric properties and higher value of ME coupling coefficient. In the present work composites of NiFe2O4 (NFO) and YMnO3 (YMO), xNiFe2O4/(1-x)YMnO3 [x = 0.25 and 0.50] have been prepared by mixing NiFe2O4 and YMnO3 powders. Different measurement techniques; XRD, UV-Vis spectroscopy, P-E loop measurement and VSM have been used to study structural, optical, ferroelectric and magnetic properties of the composites and the pure samples. Coexistence of both the ferrite and ferroelectric phase in the composites was confirmed by XRD analysis. Variation in lattice constant and crystallite size confirm that NFO lattice is more susceptible for change in structural parameters than the YMO lattice. The band gap values for all the samples determined using UV-Vis spectra varied in the range 1.4 to 1.75 eV. Saturation magnetization for pure NiFe2O4 was found to be highest and its value was 46.17emu/g. The composites show ferromagnetic ordering with saturation magnetization decreasing with increase in concentration of ferroelectric phase in the composites. P-E hysteresis loop measurement indicates resistive type behavior of composites as well as pure YMnO3. High conductivity of the samples was the reason for this poor ferroelectric nature of the samples.