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Rate parameter estimation for 4-chlorophenol degradation by UV and organic oxidants
Swati Sharma,Mausumi Mukhopadhyay,Z.V.P. Murthy 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.1
The main objective of this study was to evaluate the rate parameters of degradation/mineralization of 4-chlorophenol (4-CP) using organic oxidants, viz., peroxy acetic acid (PAA), para nitro benzoic acid (PNBA),and methyl ethyl ketone peroxide (MEKP), in basic media, in combination with UV irradiation at 254 nm. All the experiments were conducted with varying time intervals, under identical conditions of UV irradiation and pH. The reactions were followed by HPLC analysis for residual concentration and GC–MS for mineralization, and intermediates/product identification. In the present investigation, the residual concentration data of 4-CP against time were analyzed for reaction order determination by differential and integral methods. The differential method yielded fractional order of reaction for all organic oxidants under consideration. Initially the profile was observed to be linear in the time span of 0–45 s for all the organic oxidants used and thus, first-order approximation was applied. The curvilinear path, which followed up till 300 s, was approximated to first-order and second-order kinetics. No noteworthy results were observed for pseudo-first order rate equation. The change in the nature of the curves was attributed to the formation of intermediates/reaction products.
Swati Tyagi,이해성,Hyeonbin Kim,Kui-Jae Lee,Jong-Chan Chae 한국미생물학회 2020 미생물학회지 Vol.56 No.4
A Gram-reaction-negative, rod-shaped, and non-motile bacterium designated as Chryseobacterium pectinilyticum G2-70 was isolated from the effluent of a livestock manure treatment plant. The complete genome of the strain consisted of a chromosome with 2,823,139 bp and one circular plasmid with 16,106 bp. The genome with a G + C content of 31.21% contained 2,621 predicted coding sequences, 51 tRNA genes, and 15 rRNA genes. Strain G2-70 showed resistance against amoxicillin as well as ciprofloxacin and the chromosomal DNA contained the corresponding genes, blaOXA (class D beta-lactamase) and adeL (fluoroquinolone antibiotic efflux pump).
Swati Sharma,Dilip K. Maiti,Md. Mahbub Alam,Bhupendra K. Sharma 한국풍공학회 2019 Wind and Structures, An International Journal (WAS Vol.29 No.1
A heated square cylinder (with height A*) is kept parallel to the cold wall at a fixed gap height 0.5A* from the wall. Another adiabatic rectangular cylinder (of same height A* and width 0.5A*) is placed upstream in an inline tandem arrangement. The spacing between the two cylinders is fixed at 3.0A*. The inlet flow is taken as Couette-Poiseuille flow based non-linear velocity profile. The conventional fluid (also known as base fluid) is chosen as water (W) whereas the nanoparticle material is selected as Al2O3. Numerical simulations are performed by using SIMPLE algorithm based Finite Volume approach with staggered grid arrangement. The dependencies of hydrodynamic and heat transfer characteristics of the cylinder on non-dimensional parameters governing the nanofluids and the fluid flow are explored here. A critical discussion is made on the mechanism of improvement/reduction (due to the presence of the upstream cylinder) of heat transfer and drag coefficient, in comparison to those of an isolated cylinder. It is observed that the heat transfer increases with the increase in the non-linearity in the incident velocity profile at the inlet. For the present range studied, particle concentration has a negligible effect on heat transfer.
Energy of partial complements of a graph
SWATI NAYAK,SABITHA DSOUZA,GOWTHAM H. J.,PRADEEP G. BHAT 장전수학회 2019 Proceedings of the Jangjeon mathematical society Vol.22 No.3
The partial complement of a graph G with respect to a set S denoted by G S is the graph obtained by removing the edges of hSi and adding edges which are not in hSi in G. In this paper we introduce the concept of energy of partial complements of graph and partial complement energy is computed for few classes of graphs. Some bounds are obtained for partial complement energy of a graph G.
Swati Saini 연세대학교 동서문제연구원 2020 Global economic review Vol.49 No.1
This paper formulates a growth model to study the interlinkages among quality of schooling, human capital and technical progress of a stylised developing economy such as India. The simulation results reveal that under the technology regimes of innovation and imitation, the quality of schooling triggers a child quantity– quality trade-off wherein parents invest in educating their children and bear lesser number of children when schooling quality exceeds an endogenously determined threshold. Consequently, the stylised economy reaches a self-sustaining growth path under both the regimes by investing in human capital of the young generation in the long run.