In the background dynamics of a spatially flat FLRW model of the universe, we investigate an interacting dark energy (DE) model in the context of Lyra’s geometry. Pressure-less dust is considered as dark matter, mass of which varies with time via scalar field in the sense that decaying of dark matter particles reproduces the scalar field. Here, quintessence scalar field is adopted as DE candidate which evolves in exponential potential. Mass of the dark matter particles is also considered to be evolved in exponential function of the scalar field. Cosmological evolution equations are studied in the framework of dynamical systems analysis. Dimension-less variables are chosen properly so that the cosmological evolution equations are converted into an autonomous system of ordinary differential equations. Linear stability is performed to find the nature of critical points by perturbing the system around the critical points in the phase-space. Classical stability is also executed by finding out the speed of sound. Dynamical systems explore several viable results which are physically interested in some parameter regions. Late-time scalar field-dominated attractors are found by critical points, corresponding to the accelerating universe. Scalar field-displacement vector field scaling solutions are realized that represent late-time decelerated universe. Dark energy-dark matter scaling solutions are also exhibited by critical points which correspond to accelerated attractors possessing similar order of energy densities of dark energy and dark matter, that provides the possible solutions of coincidence problem.
The present laboratory investigation was aiming to assess the influence of various post-harvest treatments on storage behaviour of aonla fruits during the year 2015-16 in the 'Department of Horticulture and Post-Harvest Technology, Institute of Agriculture, Visva-Bharati, Sriniketan'. Freshly harvested physiological mature fruits of aonla cv. Chakaiya of uniform size, shape, colour, free from disease and bruises were given various post-harvest treatment of gibberellic acid (GA 3 : 50 ppm, 100 ppm), naphthalene acetic acid (NAA: 20 ppm, 30 ppm) and calcium chloride (CaCl 2 : 1, 1.5%) and were air dried and kept in 5 ply corrugated boxes (5% ventilations) with newspaper lining and stored in room temperature. The fruits were analysed for various quality attributes at different storage intervals up to 12 days. The results revealed that physiological loss in weight (4.94, 7.06 and 9.04%) and spoilage percent (0, 0 and 15%) of the fruits remain minimum after 4, 8 and 12 days respectively in CaCl 2 (1%) treated fruits during storage. Whereas, TSS (9.28, 10.82 and 1 2.46 o B), acidity (2.31, 2.08 and 1.89%), ascorbic acid (475.06, 456.70 and 413.13 mg 100 g -1 ) and total sugar (7.86, 8.20 and 8.62%) of the fruits were highest after 4, 8 and 12 days respectively in GA 3 (100 ppm) treated fruits during storage. This study shows that the storability and quality of aonla fruits can be favourably influenced during storage when treated with calcium chloride and GA 3 .
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