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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
    Effect of stress ratio on fatigue crack growth behaviour of friction stir welding between AA6061 and AA7075 alloys
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Kandwal, Abhishek; Gope, P.C.
    In the present work, fatigue crack growth in friction stir welded dissimilar AA6061 and AA7075 is performed under different stress ratio and maximum load condition. Crack is a damage that often occurs in members of structures and may cause sudden serious failure of the structures. In a structure generally weld is the weakest section and therefore more prone to failure due to crack propagation. Therefore the study of mechanism of crack growth and its parameters is of paramount importance. The effects of presence of crack on fracture parameters like crack opening stress (Sop) and stress intensity factor (K) of specimen has been the subject of various investigations. However, the parametric studies like effect of stress ratio and amplitude; on the fracture parameters of specimen for friction stir welded joints has gaps in the literature and therefore needs further investigation. Aluminium alloys AA6061 and AA7075 have been chosen for the present study as they are both used in conjunction in many areas of engineering such as marine and aircraft structures. The crack growth rate data for the weld shows that with the increase in stress ratio, fatigue life of the joint decreases. The fatigue life obtained for constant maximum load and varying stress ratio condition shows that the highest Fatigue life is obtained for stress ratio R= -0.5 (48200 cycles) and lowest for R=0.8 (22200 cycles). The curve obtained using Newman equations is closer to plain strain condition. For the constant stress ratio and varying maximum load, it was observed that the fatigue life of joint decreases with the increase in applied maximum load (Pmax) with the highest fatigue life observed for Pmax=4kN (28908 cycles) and lowest for Pmax=6kN (21635 cycles).
  • ThesisItemOpen Access
    Effects of randomly oriented secondary cracks on the fracture parameters in a rectangular plate under static loading
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Ansari, Gulfam Akhtar; Bisht, Neeraj
    In the present work, a numerical study using finite element is performed to investigate the effects of randomly oriented secondary cracks on the fracture parameters in a rectangular plate under static loading. Crack is damage that often occurs in members of structures and may cause the sudden serious failure of the structures. The effects of the presence of crack on fracture parameters like stress intensity factor and T-stress of specimen has been the subject of various investigations. However, the parametric studies like the effect of crack offset distance, crack size, orientation and number of crack present on the fracture parameters of the specimen are scarce in the literature. The finite element software ANSYS is used to simulate the fracture parameters. Numbers of studies were conducted to study the accuracy of ANSYS and the meshing parameters on which the accuracy depends. Two types of crack geometries were considered viz. parallel cracks and inclined cracks with different crack ratios. Also, the effect of several secondary cracks was studied. The presence of secondary cracks induced a shielding effect on the primary crack. The presence of secondary crack results in the development of mode II SIF. The mode mixing, however, was minimal and the mode II SIF was insignificant compared to mode I SIF. It is observed that when the cracks are closer to each other the shielding effect is high and as the cracks move away the shielding effect decreases. With the increase in inclination angle intensification effect is decreases. The shielding was also higher for a greater number of neighbouring cracks. Higher length of secondary cracks also increased the shielding effect. A correlation between SIF and T stress was also developed and it was seen that they are highly correlated. T stress can also be an important alternative fracture parameter to study crack interaction problems. Statistical analysis was performed to study the impact of various parameters in comparison to each other for all the geometries it was seen that the crack offset distance has a major influence on SIF compared to the crack ratios. Also, inclined cracks were seen to have a profound impact on SIF compared to parallel cracks. Multi-site damage is a common occurrence in aircraft and nuclear industries and the results of the study can contribute to accessing the structural integrity of the structure and estimate the in-service life of the component.
  • ThesisItemOpen Access
    Studies on conventional and improved tillage practices for sowing wheat in paddy harvested field
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-09) Rathod, Sunil Laxman; Pateriya, R.N.
  • ThesisItemOpen Access
    Land use suitability and impact assessment of soil conservation and water resources development measures in Garhkundar-Dabar Watershed
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-07) Raundal, Yogesh Ashok; Sharma, H.C.
    Land evaluation is important for the successful crop production. The impacts of soil and water resource development measures have been reviewed. Water stored in the checkdam and the sediment load per annum is needed for management of the reservoir water allocation and thus, required to be assessed. Soil conservation measures decreases the sediment load on check dam, substantially. Keeping these facts in view, present study was conducted to study the land use suitability on the basis of the proximity of land to various resources, viz. water availability, distance from sustainable water resource, village and road proximity and the present land use. The constructed surface water resources, i.e. check dams, were measured for their storage capacity and sediment deposited in their bed for two years. The effectiveness of soil conservation measures in sediment transport reduction was studied. Effect of the construction of the water resources development measures i.e. check dam on ground water level build up in the wells located in nearby fields from the check dams. The watershed selected for the study was Garhkundar-Dabar watershed, Madhya Pradesh. Land suitability analysis showed that the, 5.5 ha area was having highest suitability rank, whereas, 327.78 ha was having least suitability which was about 38.23 percent of the watershed area. The total water storage capacity of nine check dams was found whopping amount of 24102.28 m3, which was substantially higher in the area. This water can be successfully used for irrigation purpose. The sediment load of check dams was estimated and it was found that, three check dams out of nine were found critical for their high sediment load. Most critical checkdam was in the control watershed, where no soil conservation measures were adopted. Two check dams in the Garhkundar-Dabar watershed were found critical for loss of capacity due to silting. The sediment load in checkdam, constructed in the control watershed was about 1.9 times higher, equal to 190.25 m3, than the highest sediment load in soil conservation measures adopted watersheds. The water level in the wells, located in nearby areas of checkdam increased by an average of 2.94 m and maximum up to 6.57 m, over a period of one year, at the end of successful rabi crop in the area. Number of dried up wells was reduced to 13, which was 29 last year, out of 50 wells under consideration.
  • ThesisItemOpen Access
    Modeling and optimization of process parameters for hot air drying of banana (Musa paradisiaca L.) slices
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-08) Dinkar, Vairat Amita; Pandey, R.K.
    The Banana (Musa paradisiacal L.) is a crop of tropical climate and is grown for its fruit, fiber or foliage. Green banana is perishable and deteriorates after harvesting. Drying prolongs the shelf life of banana. The hot air drying characteristics of green banana slices were studied at drying temperature (40-800C), air velocity (1.5-5.5 m/s) and slice thickness (2-6 mm) in the laboratory scale hot air dryer. Drying was found to occur in the falling rate period only. Higher drying rate were observed with the higher temperature level and minimum level of slice thickness. Drying rate increases with increase in air velocity upto 3.5 m/s after that there was no profound effect on drying rate. The drying behavior of the banana slices was mathematically analyzed using models namely page’s, exponential and logarithmic model. The experimental validity of models were done on the basis of maximum R2 and minimum SEE, and RMSE. The page’s model described the drying behaviour of banana slices better as compared to exponential and logarithmic model. The results reveled that, the temperature, air velocity, slice thickness had significant effect on various quality parameters of dried banana slices viz. rehydration ratio, hardness, shrinkage, ascorbic acid and color whereas carbohydrate and ash content had non-significant effect. The optimum level of independent variables for banana drying obtained by using numerical optimization of multiple responses viz. drying time, rehydration ratio, shrinkage, hardness, ascorbic acid and L and b value were temperature-600C, air velocity- 3.5 m/s and slice thickness- 2mm. These optimum values are recommended for hot air drying of banana.
  • ThesisItemOpen Access
    Drying characteristics and process optimization of spinach (Spinacia oleracea L.) using response surface methodology
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-07) Asaram, Padvi Chandrarekha; Pandey, J.P.
  • ThesisItemOpen Access
    Design and development of an animal drawn subsurface manure applicator
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Negi, Ankit; Singh, Jayant
    Agriculture is a production oriented sector in which farmers apply various crop inputs. The farmers are over applying the chemical fertilizers to fulfil global food demand. The over utilization of chemical fertilizers such as Urea and DAP has undermine the quality of soil. Moreover, the over use of these chemical fertilizers have drastic effect on the human health avoid the volatilization of Nitrogen in the form of Ammonia and can enhance the properties of soil. Therefore an animal drawn subsurface manure applicator was developed and its performance was evaluated in laboratory as well as in field conditions. The study shows that screw type metering mechanism is appropriate for the developed machine. The metering mechanism had to deliver to. The study shows that there is insignificant effect of hopper height and travel speed on the uniformity of manure distribution. The theoretical manure rate, actual manure rate and efficiency of screw conveyer were observed to be as well as on the environment. The subsurface application manure can 11.62, 7.01 and 60.32%. The draft requirement for untilled field conditions was observed as 0.63, 0.68, 0.68 and 0.77 kN for the speed of 1.5, 2, 2.5 and 3 km/h at the 50 mm depth of operation. Similarly, the draft was observed as 0.72, 0.77, 0.82 and 0.86 kN for the Speed of 1.5, 2, 2.5 and 3 km/h at the 100 mm depth of operation. Also, the draft was observed as 1.20, 1.30, 1.34 and 1.39 kN respectively for the speed of 1.5, 2, 25 and 3 km/h at the 150 mm depth of operation. The draft requirement for tilled field conditions was observed as 0.53, 0.63, 0.68 and 0.68 kN for the speed of 1.5, 2, 2.5 and 3 km/h at the 50 mm depth of operation. Also, the draft requirement was observed as 0.73, 0.78, 0.87 and 0.87 kN for the speed of 1.5, 2, 2.5 and 3 km/h at the 100 mm depth of operation. Also, the draft requirement was observed as 0.92, 1.01, 1.06 and 1.10 KN for the speed of 1.5, 2, 2.5 and 3 km/h at the 150 mm depth of operation.
  • ThesisItemOpen Access
    Optimization of process parameters for drying of lotus root slices
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-11) Reena Kumari; Omre, P.K.
    The experiment was carried out to standardization of pre-treatment for prevention of browning ant to study the drying characteristics of lotus root slices under different drying conditions. The material was given chemical treatment (Ascorbic acid, Sodium bicarbonate and Potassium metabisulphite) for 10 min. and physical treatment like hot water blanching at 70, 75 and 80 0C for 3, 6 and 9 min. at each temperature. The browning index were measured for 0 to 5 h at every 1 h interval. Based on the browning index, the 0.3 % KMS and hot water blanching at 70 0C for 6 min. + 0.3 % KMS selected as pre-treatment prior to drying. The fresh (untreated) and pre-treated samples was dried at 60, 70 and 80 0C using the tray dryer. The quality parameters of the dried product like rehydration ratio, moisture diffusivity, colour parameters (L*, a* and b*), total phenolic content and antioxidant activity were determined. The initial moisture content was 76.32, 78.24 and 84.56 % (wb) of fresh, dipping in 0.3 % KMS for 10 min and hot water blanching at 70 0C for 6 min. than dipping in 0.3 % KMS for 10 min, samples, respectively. Dehydration characteristics of revealed that drying took place in the falling rate period irrespective of treatment and temperature of drying. The hot water blanched (70 0C for 6 min) + chemical (0.3 % KMS) samples took the least time for drying followed by sample treated with 0.3% KMS and untreated (fresh). The optimized browning index was minimum (1.498 to 4.963) for 0.3 % KMS as compared to 5.337 to 16.02 and 2.73 to 9.227 for 1.5% sodium bicarbonate and Ascorbic acid, respectively. For blanched samples browning index was minimum (3.08) at 70 0C for 5.44 min. as compared to others blanched samples. The rehydration ratio was varied from 1.56 to 2.82, 2.09 to 3.50 and 1.68 to 3.32 for samples with treatment T1 (control), T2 and T3, respectively. The maximum RR was observed for treatment T2 treated samples followed by samples treated with T3 and T1 under all drying conditions, respectively. The maximum RR was 3.58 of 2 mm thick samples treated with T2 treatment. The maximum effective moisture diffusivity 9.37 × 8.85 × and 10.59 × m2 s-1 of 6 mm thick sample treated with treatment T1, T2, and T3, respectively. The total phenolic content of the fresh lotus roots slices extract was found 4.23 mg GAE/g dw. The total phenolic content of dried samples was varied from 2.14 to 2.71, 2.61 to 3.28 for samples treated with treatment T1, T2 and T3, respectively. The maximum phenolic content was 3.51 of 4 mm sample treated with treatment T2. The antioxidant activity of the fresh lotus roots slices was found 93.71 %. The antioxidant activity of dried samples was varied from 62.58 to 78.88, 68.65 to 81.29 and 64.96 to 78.10 for samples treated with treatment T1, T2 and T3, respectively. The maximum antioxidant activity was 81.29 of 4 mm sample treated with treatment T2. The colour parameters L*, a* and b* of fresh lotus root slices were found 100.32, 3.76 and 9.99, respectively. It was observed that the L* values increase as increase in temperature (60 to 80 0C) and decrease as slices thickness increase (2 to 6 mm). Besides that, the values of a* and b* increase as increase in temperature (60 to 80 0C) and slices thickness (2 to 6 mm) of all samples.
  • ThesisItemOpen Access
    Behaviour of RC building with outrigger system subjected to earthquake and wind effect
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-09) Bisht, Prabhanshu; Katariya, S.K.
    The outrigger and belt truss system is commonly used as one of the structural system to effectively control the excessive drift due to lateral load, so that at the time of small or medium lateral load due to either wind or earthquake load, the risk of structural and non-structural damage can be minimized. For high-rise buildings, particularly in seismic active zone or wind load dominant, this system can be chosen as an appropriate structure. This paper studies the use of outrigger and belt truss system for high-rise concrete building subjected to wind or earthquake load. In this thesis 50, 55 and 60 storey two dimensional models of outrigger and are subjected to wind load. For the two dimensional 50 storey model, 65% maximum displacement reduction can be achieved by providing first outrigger at the top and second outrigger at the middle of the structure height. For the two dimensional 60 storey structural model subjected to the earthquake load, about 18 % reduction in maximum displacement can be achieved with optimum location of the outrigger truss placed at the top and the 33rd level. It has been observed that the maximum reaction has been generated in the soil type III (Soft soil) for all three structures (G+50, G+55 & G+60). It can be concluded after reviewing the values in table of base shear that Gust Factor load case governs the analysis as well as design for the soil type I (Hard Soil). The base shear generated by the Gust Factor load case is maximum among all the load cases in soil type I. It is safer to build tall structure on the soil type I (hard soil) rather than soil type II, (medium soil) and soil type III (soft soil).