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Priya Mishra,Sarita Singh,Preyas Ankit,Shahin Fatma,Divya Singh,Jagdamba Singh 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.4
Herein is reported a simple and efficient synthesis of isoflavones starting from various substituted phenacyl bromides and salicylaldehydes in presence of NHC. The mechanism involved domino catalysis type approach with consumption and regeneration of catalyst in two catalytic cycles. This method proved to be very lucrative and gives very good yield. The method described here represents an environmentally benign alternative to classical approach.
Priya, K.,Pal, A.K.,Sahu, N.P.,Mukherjee, S.C. Asian Australasian Association of Animal Productio 2005 Animal Bioscience Vol.18 No.11
Ninety advanced Catla catla fingerlings (av. wt. 16 g) were randomly distributed in six treatment groups with three replicates each for an experimental period of 60 days to study the effect of dietary lipid source on growth, enzyme activities and immuno-hematological parameters. Six isoprotein (40.0-41.9%) and isocaloric (4,260 kcal $kg^{-1}$) semi-purified diets were prepared with varying levels of soybean oil (SBO) and cod liver oil (CLO) within a total of 8% lipid viz., $D_1$ (Control), $D_2$ (8% SBO), $D_3$ (6% SBO and 2% CLO), $D_4$ (4% SBO and 4% CLO), $D_5$ (2% SBO and 6% CLO) and $D_6$ (8% CLO). Highest SGR was noted in $D_5$ (0.73${\pm}$0.03) group, which was similar with $D_3$ (0.71${\pm}$0.02) and $D_4$ (0.69${\pm}$0.01) groups. Activity of intestinal lipase, hepatic glucose-6-phosphate dehydrogenase (G6PDH) and aspartate amino transferase (AST) of the lipid treatment groups were significantly higher (p<0.05) than the control group. The respiratory burst activity of the phagocytes (Nitroblue tetrazolium (NBT)) was highest in $D_2$ (1.95${\pm}$0.21) followed by $D_3$ (1.19${\pm}$0.15) group, which were significantly (p<0.05) higher than the other groups. Globulin level was significantly higher in $D_3$ (1.29${\pm}$0.08) than in the other groups expect $D_4$. Hemoglobin content and total erythrocyte count did not show any significant difference. From this study, it is concluded that a diet containing 6% soybean oil and 2% cod liver oil ($D_3$) yields higher growth and immune response in Catla catla fingerlings and would be cost effective.
Flexural behaviour of reinforced concrete beams with silica fume and processed quarry fines
Priya, T. Shanmuga,Senthilkumar, R. Techno-Press 2020 Advances in concrete construction Vol.10 No.2
This paper studies the influence of silica fume and Processed Quarry Fines (PQF) on the flexural behaviour of the reinforced concrete beams by experimental as well as numerical studies. The study has been shown that the incorporation of PQF can significantly increase the stiffness and the flexural strength of reinforced HPC beams. Also, the ultimate strength of specimens prepared with the 10% silica fume and 100% PQF are higher compared to conventional reinforced concrete specimen. Numerical analysis is performed to find the ultimate strength of HPC beams to compare with experimental results. Nonlinear behaviour of steel reinforcing bars and plain concrete is simulated using appropriate constitutive models and experimental results. The results indicate that the ultimate strength, deformed shape and crack patterns of reinforced HPC beams obtained through the Finite Element Analysis (FEA) are confirming with the experimental results.
Priya Kesari,G. Udayabhanu,Arpita Roy,Sagar pal 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.122 No.-
Green biopolymeric materials and its hybrid nanocomposites, i.e. sodium alginate grafted polymethylmethacrylatebased titanium dioxide and iron oxide (SA-g-PMMA/TiO2 and SA-g-PMMA/Fe3O4) havebeen explored for the prevention of mild steel’s corrosion in 15% HCl. It is reflected from the electrochemicalimpedance data that SA-g-PMMA/TiO2 exhibits maximum inhibition efficiency of 97.28% followed bySA-g-PMMA/Fe3O4 that gives 96.82% efficiency while the unmodified sodium alginate possess merely84.74% efficiency. The declining trend of inhibition efficiency with rising temperature has been explainedthrough gravimetric studies conducted at 303 K- 333 K. The thermodynamic activation and adsorptionparameters revealed the mixed mode of adsorption of inhibitors over mild steel surface which followLangmuir adsorption isotherm. It has been observed from tafel polarization studies that all studied inhibitorsare mixed type in nature. The surface morphological inspection of the mild steel samples was donethrough FE-SEM and AFM, which revealed the formation of better protective adsorption layer over theexposed metallic surface by the nanocomposites in comparison to sodium alginate alone. In additionto this, the elemental composition of adsorbed film on inhibited mild steel specimens was obtained byXPS technique. Quantum parameters obtained through Density Functional Theory (DFT) further corroboratethe experimental outcomes.
Intrusion Detection using Attribute Subset Selector Bagging (ASUB) to Handle Imbalance and Noise
Priya, A.Sagaya,Kumar, S.Britto Ramesh International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.5
Network intrusion detection is becoming an increasing necessity for both organizations and individuals alike. Detecting intrusions is one of the major components that aims to prevent information compromise. Automated systems have been put to use due to the voluminous nature of the domain. The major challenge for automated models is the noise and data imbalance components contained in the network transactions. This work proposes an ensemble model, Attribute Subset Selector Bagging (ASUB) that can be used to effectively handle noise and data imbalance. The proposed model performs attribute subset based bag creation, leading to reduction of the influence of the noise factor. The constructed bagging model is heterogeneous in nature, hence leading to effective imbalance handling. Experiments were conducted on the standard intrusion detection datasets KDD CUP 99, Koyoto 2006 and NSL KDD. Results show effective performances, showing the high performance of the model.
The Samsung Saga: Success Story of Smartphone Giant
Priya Malhotra,Saumya Gupta Academy of Asian Business (AAB) 2019 Academy of Asian Business Review Vol.5 No.1
This paper is a case study on the Samsung’s Smartphones business. It made an attempt at identifying the major factors that led to its brilliant growth, and addressing the challenges faced on the way and how Samsung overcame them. In the first section, the paper highlights and discusses two most important turning points that shaped the success of Samsung- 1993 Frankfurt Declaration in which Kun-Hee Lee conveyed to the team his new vision for Samsung, and 2012 Samsung Galaxy S3 launch with better features and design that helped Samsung become a globally acclaimed smartphones market player. The second section discusses the two most important factors behind Samsung’s smartphones success- Work Culture and Marketing mix strategies. Samsung’s focus on meritorious work culture has helped it motivate its employees. The third section gives a detailed competitor analyses wherein Samsung’s three major competitors namely, Apple, Xiaomi and Huawei are discussed. The section helps the readers understand how Samsung is placed in the market in comparison to its competitors. The last section contains SWOT analyses of Samsung. In the end, a crisp conclusion along with learnings from the case and the future prospects of the company has been presented. The paper will be helpful to business professionals, academicians and students trying to understand the success factors behind a major technology giant. The key learnings are the importance of good work culture and a healthy marketing mix essential for a business in a highly competitive environment.