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No full textJournal articleCOASTAL AGRICULTURAL RESEARCH
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Home > Vol 35, No 2 (2017) > PANDA
INTEGRATED APPROACH FOR IMPROVING WATER PRODUCTIVITY IN GROUNDWATER EXPLOITED AREAS OF COASTAL ODISHA
DILEEP K PANDA, PRIYANKA DAS, S K AMBAST
ABSTRACT
This study explores the background scenarios of an over-exploited coastal aquifer in the lower Subernarekha river basin of north Odisha, and highlights the socio-economic benefits through technological interventions. The change in vegetation (i.e. NDVI) between the year 2000 and 2009 shows a notable shift from other land-use classes to agricultural practices, with a 15% increase in area under vegetation during the pre-monsoon summer season. This indirectly point to the increased groundwater utilization, because farmers use their own shallow tube well or purchase water from others to grow the summer paddy. As a case study, a tank-cum-well system, with a tank of 80 m length, 60 m width and 2 m depth, has been created. In 2014, with delayed arrival of monsoon rainfall and persistent dry spells, the harvested volume of 10000 m3 of water provided the life-saving irrigations. To improve the water productivity, fish farming was undertaken with a stock of about 2000 fishes, each grew to about 450 grams within 3 months. Moreover, a 2 m width and 0.15 m depth earthen platform was made around the recharge structure in which 500 banana plants were grown, along with perennial fruit crops. In the first year, a gross return of Rs. 75,000 has been estimated.Not Availabl
ChemInform Abstract: Cu/Fe‐Catalyzed Carbon—Carbon and Carbon—Heteroatom Cross‐Coupling Reactions
No full textEffect of annealing treatment on magnetic texture of cold rolled ULC steel
No full textAnisotropic behaviors of cold rolled and annealed ULC steels are evaluated by orientation imaging microscopy (OIM) and magnetic Barkhausen emission (MBE) techniques. The MBE voltage is found higher along RD than TD, indicating the presence of favorable magnetic easy axis along RD for both 50 and 80% cold rolled steels. The recovery occurred at low temperature (T 500 degree C) annealing leads to an abrupt drop of ‘k’ value for both cold rolled steels. Furthermore, the kernel average misorientation map, obtained from OIM, decreases with increasing annealing temperatures
The potential of Λ and Ξ- studies with PANDA at FAIR
No full textThe antiproton experiment PANDA at FAIR is designed to bring hadron physics to a new level in terms of scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We discuss ground-state hyperons as diagnostic tools to study non-perturbative aspects of the strong interaction, and fundamental symmetries. New simulation studies have been carried out for two benchmark hyperon-antihyperon production channels: p¯ p→ Λ¯ Λ and p¯ p→ Ξ¯ +Ξ-. The results, presented in detail in this paper, show that hyperon-antihyperon pairs from these reactions can be exclusively reconstructed with high efficiency and very low background contamination. In addition, the polarisation and spin correlations have been studied, exploiting the weak, self-analysing decay of hyperons and antihyperons. Two independent approaches to the finite efficiency have been applied and evaluated: one standard multidimensional efficiency correction approach, and one efficiency independent approach. The applicability of the latter was thoroughly evaluated for all channels, beam momenta and observables. The standard method yields good results in all cases, and shows that spin observables can be studied with high precision and accuracy already in the first phase of data taking with PANDA. © 2021, The Author(s)
Nanocrystallization and Core-loss properties of Fe-rich FeSiBPNbCu nanocrystalline alloy
No full textThe present work investigates the structure, soft-magnetic and core-loss properties of 25 mm wide Fe83Si2B9P4Nb1Cu1 nanocrystalline ribbons. The melt-spun precursor ribbons of the thickness of 22 and 28 mu m were prepared using commercial raw materials under ambient atmosphere. The XRD and DSC results show predominantly amorphous and hetero-amorphous structure for 22 and 28 mu m ribbons in the as-quenched state. Further, the partial crystallization annealing leads to thickness dependent nanocrystallization process, wherein the thinner 22 mu m ribbon shows sluggish primary(alpha-Fe(Si)) and delayed secondary(Fe-3(B0.8P0.2)) crystallization process compared to 28 mu m ribbons. The difference is explained through as-quenched precursor matrix structure and selective solute re-distribution of the intergranular region during nanocrystallization. Moreover, the higher crystallite size (D) and volume fraction(V-cr) of alpha-Fe(Si) nanocrystallites are observed for the 28 mu m ribbon in the optimal annealing window. Under optimal annealing conditions, the 28 mu m nanocrystalline ribbon (733 K) shows better AC soft-magnetic properties including B-800 of 1.62 T, H-c of 15.7 A/m, B-r/B-s ratio > 0.8 compared to B-800 of 1.59 T, H-c of 17 A/m and B-r/B-s ratio > 0.7 of 22 mu m (743 K) ribbon. The 28 mu m ribbon shows a low core loss (P) of 0.34 W/kg under 50 Hz, 1.5 T compared to P > 0.65 W/kg for 22 mu m ribbons. The lower core-loss behaviour of thicker 28 mu m in the sub-kHz frequency regime has been explained based on the nanocrystalline microstructure and loss coefficients (hysteresis and eddy current). The work compares the AC core-loss properties with reported Fe-rich nanocrystalline alloys and also discusses the scope of improving B800 beyond 1.65 T for the present alloys
Third-order non-linear optical susceptibilities in diffusion modified AlxGa1-xN/GaN single quantum well
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Water stress is a component of cold acclimation process essential for inducing full freezing tolerance in strawberry
Get PDFThe factors involved in cold acclimation process and their role in inducing freezing tolerance were studied in strawberry (Fragaria X ananassa) plants. The results show that low temperature and water stress are two key components of cold acclimation, in that low temperature typically induced water stress in the plants. After a 2-week exposure of plants to 3/1°C (day/night temperature), the leaf water potential decreased markedly to below -1.6 MPa. While both of these components contribute significantly to the induction of freezing tolerance, water stress is a dominant factor in inducing freezing tolerance, contributing roughly to 56% of freezing tolerance acquired by natural cold acclimation. Typical cold acclimation treatment of plants for 2 weeks increased their freezing tolerance by about 14°C to -20.7°C while the same treatment, in the absence of the accompanying water stress, increased their freezing tolerance only by 5°C, which indicates the importance of water stress during cold acclimation. Furthermore, both low temperature and water stress independently induced the orthologs of cold-responsive genes, COR47 and COR78, however, stronger expression of these genes was observed in response to cold acclimating conditions. Thus, these results show that both of these factors are essential elements of cold acclimation process and play an important role in inducing freezing tolerance in strawberry plants
Influence of Al addition on structural, crystallization and soft magnetic properties of DC Joule annealed FeCo based nanocrystalline alloys
No full textThe effect of minor Al addition on structural, crystallization, soft magnetic behaviour and magnetic field induced anisotropy through DC Joule annealing in (Fe53.95Co29.05)(83)Si1.3B11.7-xNb3Cu1Alx, (X = 0, 1) alloys has been studied. The Al added as-quenched melt spun ribbons show good glass forming ability, better thermo-physical properties like a high T-x1 of 438 degrees C, Tc-am of 435 degrees C and Tc-nc of 906 degrees C, compared to T-x1 of 389 degrees C, Tc-am of 409 degrees C and Tc-nc of 900 degrees C for the alloy without Al addition. The longitudinal magnetic field annealed Al added alloy exhibits low Hc of 12.92 A/m and maximum Ms. of 1.78 T. The better soft magnetic properties of Al added alloy are achieved through a high nucleation density of BCC-FeCo(Al) nanocrystallites having low K-1 and lambda values. The as-quenched alloys possess high magneto-strain exceeding 30 ppm and approach near zero value on nanocrystallization. The longitudinal magnetic field assisted DC Joule annealing, having current density (J) in the range of J = 20-25 A/mm(2) promotes good magnetic softening due to precipitation of 5-35 nm nanocrystallites as explained by extended-random anisotropy model. The Al added alloy shows better magnetic field induced anisotropy (K-u) on nanocrystallization and shows visible change in the shape of hysteresis loop. (C) 2017 Elsevier B.V. All rights reserved
Spin injection and detection in p-Si channel using highly spin polarized Heusler alloy Co45Ni5Cr25Al25/MgO tunnel contact
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