29 research outputs found
Collapse and Revival Oscillation in Double Jaynes-Cummings Model
We develop a systematic method of solving two non-interacting Jaynes-Cummings
models by using the dressed state formalism in Hilbert space
. It is shown that such model, called Double
Jaynes-Cummings model (D-JCM), can be exactly solved if we take the initial
bare state as the linear superposition of two Bell states. The collapse and
revival oscillation, which is the standard trait of typical Jaynes-Cummings
model, can be recovered if we make measurement at each local sites. Some
consequence of the entanglement-induced dressing is discussed.Comment: 4 figures, 12 page
Growth promoting properties of Mycobacterium and Bacillus on rice plants under induced drought
Management of drought stress through application of plant growth promoting rhizobacteria (PGPR) is now considered as an effective strategy in the present scenario of altered environmental conditions of the world. The aims and objectives of the present investigation was isolation, characterization and identification of some potential microbial resources (PGPR) from drought-affected upland rice fields of South Bengal followed by experimentation on the effect of isolated PGPR on drought induced rice seedlings. Selected isolates were isolated from rice field rhizospheric soils and tested for their PGPR activity, through phosphate solubilization, nitrogen fixation, IAA production and ACC deaminase activity. Then, the selected isolates were identified through 16S rDNA sequencing and phylogenetic analysis. Among the screened isolates two (isolate 1 and isolate 6) showing plant growth promoting traits, was applied on studied germplasm (IR64) to find out the influence of the applied organisms on rice growth and development under induced drought. Both organisms showed a positive influence (through increase in germination percentage, root growth, shoot growth, fresh weight and dry weight) on the studied rice growth and development under induced drought. Isolate 1 and 6 identified as species of Mycobacterium sp and Bacillus sp respectively through molecular taxonomy. Hence, these two isolates are expected to alleviate drought stress in the rice field for their nature of plant growth promotion under drought stress
Optimisation of Fibre-Reinforced Polymer Web Core Bridge Deck—A Hybrid Approach
This paper presents a novel hybrid technique based on D-optimal design and Nelder-Mead simplex algorithm for optimisation of fibre-reinforced polymer (FRP) composite web core bridge deck panels. The optimisation is performed to minimise the weight of FRP composite bridge deck panels based on deflection limit, stresses, buckling and failure analysis, and subsequently the representative design curves are developed. Sensitivity analysis is performed to portray the effect of variation in geometry of the bridge deck on its deflection, stress and buckling behaviours.</p