Individual Effect of Spatially Periodic Vertical Surface Temperatures and Nanoparticles on Natural Convection in Water
description: This paper considers the thermo-convective boundary-layer flow (BLF) of a water-copper mono-nanofluid over a flat vertical surface which is subjected to three types of periodic temperature variations described by the sinusoidal, sawtooth, and triangular waveforms. The temperature of the fluid at the flat surface is greater than the surrounding ambient temperature. The governing equations describing the BLF have been reduced to a non-similar form using an appropriate stream function formulation. The Keller-Box method is used to obtain numerical solution of the boundary-value problem. The effect of the pertinent parameters on the nature of the flow and the heat transfer has been discussed using actual thermophysical data. The results about the shear-stress and heat transfer rate at the surface are presented as well. To study the nature of BLF, the velocity and thermal boundary-layers, the streamline and isotherm plots have been considered, which reveal that the nanoparticle volume-fraction, amplitude of surface temperature variations, and the Grashof number play a pivotal role in enhancing/diminishing heat transfer. The final outcome reveals that the heat transfer is highest for the sinusoidal waveform, followed by that of the triangular and then, the sawtooth. An important inference is that a symmetric periodic temperature distribution at the surface enhances heat transfer more than that of a constant surface-temperature. 2023 by ASME.
creator: Narayana M.; Saha R.; Siddheshwar P.G.; Nagouda S.S.
source: ASME Journal of Heat and Mass Transfer, Vol-145, No. 7
publisher: American Society of Mechanical Engineers (ASME)
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 28328450
format: Online
language: English
type: Article
coverage: Narayana M., Department of Mathematics, The University of the West Indies, Kingston 7, Jamaica; Saha R., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bangalore, 560029, India; Siddheshwar P.G., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bangalore, 560029, India; Nagouda S.S., Center for Mathematical Needs, Department of Mathematics, CHRIST (Deemed to be University), Bangalore, 560029, India

MoS2-TiO2 Nanocomposites for Enhanced Photo-electrocatalytic Hydrogen Evolution
description: The investigation on the designing and fabrication of highly efficient electrocatalysts for hydrogen evolution reaction (HER) is critical for future applications in renewable sustainable energy. The present work reports the hydrothermal synthesis of two-dimensional MoS2 and MoS2-TiO2 nanostructures. The as-prepared nanostructures were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Raman analysis, UV-vis-NIR, and photoluminescence spectrophotometry and vibrating sample magnetometer (VSM). Systematic electrochemical measurements for HER were performed and MoS2-TiO2 nanocomposites demonstrated the lowest onset potential in comparison with MoS2. The results suggest that the nanofusion interface between MoS2 nanoflakes and TiO2 nanoparticles induced an efficient charge transfer from the conduction band of MoS2 to TiO2 and favored the reduction of H+ at active sites. We believe the present work can open up new possibilities that would provide deep insights for the rational design of 2D materials-based catalysts for energy storage and conversion applications. 2023 The Electrochemical Society (ECS). Published on behalf of ECS by IOP Publishing Limited.
creator: Chacko L.; Joseph A.; Tadi K.K.; Kumar A.; Narayanan T.N.; Aneesh P.M.
source: Journal of the Electrochemical Society, Vol-170, No. 7
publisher: Institute of Physics
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 134651; CODEN: JESOA
format: Online
language: English
type: Article
coverage: Chacko L., Department of Physics, Central University of Kerala, Tejaswini Hills, Periye, Kerala, Kasaragod, 671316, India, Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India; Joseph A., Department of Physics, Central University of Kerala, Tejaswini Hills, Periye, Kerala, Kasaragod, 671316, India; Tadi K.K., Centre for Healthcare Advancement, Innovation and Research, Vellore Institute of Technology, Chennai, 600127, India; Kumar A., Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P Serilingampally Mandal, Gopanapally Village, Hyderabad, 500 046, India; Narayanan T.N., Tata Institute of Fundamental Research - Hyderabad, Sy. No. 36/P Serilingampally Mandal, Gopanapally Village, Hyderabad, 500 046, India; Aneesh P.M., Department of Physics, Central University of Kerala, Tejaswini Hills, Periye, Kerala, Kasaragod, 671316, India

Testing for the Bidirectional Relationship Between FDI in Services and Trade in Services: Evidence from Emerging Economies
subject: Emerging markets; foreign direct investment; panel vector error correction model; services
description: We examine the two-way links between foreign direct investments (FDI) in services and trade in services for 26 emerging economies from 2003 to 2015 using sectoral and sectoral disaggregated FDI data. Within a multivariate framework, we use panel unit root tests, recently developed heterogeneous panel cointegration and panel vector error correction model (VECM). Our results confirmed the cointegrating relationship between trade in services, FDI in services, financial services FDI and nonfinancial services FDI. We find the existence of long-run unidirectional causality from trade in services to FDI in services. However, the disaggregated analysis shows a bidirectional link between nonfinancial services FDI and trade in services in the short run. Still, there is no causality between financial services FDI and trade in services both in the short run and long run. The result also shows the evidence of unidirectional causality running from trade in services to nonfinancial services FDI in the long run. It implies that sectoral decomposition matters in the FDItrade nexus in emerging economies. JEL Codes: G20, F14, G20, F23 2022 Indian Institute of Foreign Trade.
creator: Jithin P.; Babu M.S.
source: Foreign Trade Review, Vol-58, No. 3, pp. 412-427.
publisher: Sage Publications India Pvt. Ltd
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 157325
format: Online
language: English
type: Article
coverage: Jithin P., Department of Economics, Christ University, Karnataka, Bangalore, India; Babu M.S., Department of Humanities and Social Sciences, Indian Institute of Technology Madras, Tamil Nadu, Chennai, India

A colorimetric chemosensor for distinct color change with (E)-2-(1-(3-aminophenyl)ethylideneamino)benzenethiol to detect Cu2+ in real water samples
subject: Chemosensor; Colorimetry; DFT studies; Schiff base; Water samples
description: The study reports the synthesis of chemosensor (E)-2-(1-(3-aminophenyl)ethylideneamino)benzenethiol (C1), a highly sensitive, colorimetric metal probe that shows distinct selectivity for the detection of Cu2+ ion in various real water samples. Upon complexation with Cu2+ in CH3OH/H2O (60:40 v/v) (aqueous methanol), the C1 demonstrate significant enhancement in the absorption at 250nm and 300nm with a color change from light yellow to brown which was visualized using naked-eye. Therefore, these properties make C1 as an effective candidate for on-site Cu2+ ions detection. The emission spectrum of C1 illustrated TURN-ON recognition of Cu2+ with a limit of detection (LOD) of 46nM. Furthermore, Density Functional Theory (DFT) calculations were performed to better understand the interactions between C1 and Cu2+. The obtained results suggested that the electron clouds present around the NH2 innitrogen and sulfur in SH play a pivotal role in the formation of a stable complex. The computational results were in good agreement with the experimental UVvisible spectrometry results. Graphical abstract: [Figure not available: see fulltext.] 2023, The Author(s), under exclusive licence to The Japan Society for Analytical Chemistry.
creator: Patil N.; Dhake R.B.; Phalak R.; Fegade U.; Inamuddin; Naushad M.; Bathula C.; Kanchi S.; Govender K.
source: Analytical Sciences, Vol-39, No. 8, pp. 1413-1423.
publisher: Springer
date: 2023-01-01
rights: All Open Access; Gold Open Access
relation: ISSN: 9106340; PubMed ID: 37280486; CODEN: ANSCE
format: Online
language: English
type: Article
coverage: Patil N., Department of Chemistry, D. D. N. Bhole College, Bhusawal, MH, Jalgaon, 425201, India, Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal, MH, Jalgaon, 425201, India; Dhake R.B., Department of Chemistry, D. D. N. Bhole College, Bhusawal, MH, Jalgaon, 425201, India; Phalak R., Department of Chemistry, D. D. N. Bhole College, Bhusawal, MH, Jalgaon, 425201, India; Fegade U., Department of Chemistry, Bhusawal Arts, Science and P. O. Nahata Commerce College, Bhusawal, MH, Jalgaon, 425201, India; Inamuddin, Advanced Functional Materials Laboratory, Department of Applied Chemistry, Zakir Husain College of Engineering and Technology, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202002, India; Naushad M., Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, Saudi Arabia; Bathula C., Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, 04620, South Korea; Kanchi S., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, 560 029, India; Govender K., Department of Chemical Sciences, Doornfontein Campus, University of Johannesburg, P. O. Box 17011, Johannesburg, 2028, South Africa, National Institute for Theoretical and Computational Sciences (NITheCS), Stellenbosch, South Africa

Valorization of pineapple peel waste for fungal pigment production using Talaromyces albobiverticillius: Insights into antibacterial, antioxidant and textile dyeing properties
subject: Antioxidant; Fungal pigment; Pineapple peel; Talaromyces sp.; Textile dye
description: The present study explores natural pigments as sustainable alternatives to synthetic textile dyes. Due to their therapeutic applications and easy production, fungal pigments have gained attention. However, data on pigment production using solid-state fermentation and optimization is limited. Milk whey was used to grow Talaromyces sp., followed by an evaluation of pigment production in solid and liquid media. Pineapple peels were used as a cost-effective substrate for pigment production, and a one-factor-at-a-time approach was used to enhance pigment production. Pineapple peel-based media produced 0.523 0.231 mg/g of pigment after eight days of incubation. The crude pigment had promising antibacterial and significant antioxidant properties. The extraction fungal pigment's possible use as an eco-friendly textile dye was assessed through fabric dyeing experiments with different mordants. This work contributes to the valorization of agricultural waste and provides insight into using fungal pigments as sustainable alternatives to synthetic textile dyes. 2023 Elsevier Inc.
creator: Umesh M.; Suresh S.; Santosh A.S.; Prasad S.; Chinnathambi A.; Al Obaid S.; Jhanani G.K.; Shanmugam S.
source: Environmental Research, Vol-229
publisher: Academic Press Inc.
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 139351; PubMed ID: 37088318; CODEN: ENVRA | LS; 2023-2024; Vol-2; 0303-0312;
format: Online
language: English
type: Article
coverage: Umesh M., Department of Life Sciences, CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India; Suresh S., Department of Life Sciences, CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India; Santosh A.S., Department of Life Sciences, CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India; Prasad S., Department of Life Sciences, CHRIST (Deemed to be University), Hosur Road, Karnataka, Bengaluru, 560029, India; Chinnathambi A., Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia; Al Obaid S., Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia; Jhanani G.K., University Centre for Research & Development, Chandigarh University, Mohali, 140103, India; Shanmugam S., Chair of Biosystems Engineering, Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu, 51010, Estonia

Study of Surface Waves Transmission in Orthotropic Bilateral Structure
subject: Analytical mathematical modeling; Corrugation; Initial stress; Orthotropic material; Rayleigh elastic waves
description: This research work depicts the study of transmission of surface Rayleigh elastic waves in orthotropic layer having corrugated boundary resting over a pre-stressed orthotropic substrate. As a result, this study is made to spot the Rayleigh elastic wave transference under the consequence of initial stress in orthotropic material medium. Consequence of corrugation parameter, layer width parameter, initial stress parameter and density parameter on Rayleigh elastic wave propagation are marked separately. Distinguished parametric graphs are drawn following numerically the analytical study to exhibit the influence of distinct considered parameters on Rayleigh wave phase velocity of propagation. Frequency equations are obtained in closed determinant form under certain boundary conditions. Some particular cases have been deduced. Parametric results on the phase velocities yield a significant conclusion of which some are: (a) The corrugation parameter affects the more on phase velocity in comparison to initial stress (b) The orthotropic height stiffening can monotonically decrease the speed of phase. The present models may be applicable in engineering composites and for seismologist. 2023, The Author(s), under exclusive licence to Springer Nature India Private Limited.
creator: Singhal A.; Sahu S.A.; Chaudhary S.; Nirwal S.
source: International Journal of Applied and Computational Mathematics, Vol-9, No. 4
publisher: Springer
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 23495103
format: Online
language: English
type: Article
coverage: Singhal A., Christ (Deemed to be University) Delhi NCR, Uttar Pradesh, Ghaziabad, 201003, India; Sahu S.A., Indian Institute of Technology (Indian School of Mines), Jharkhand, Dhanbad, 826004, India; Chaudhary S., Madanapalle Institute of Technology and Science, Andhra Pradesh, Madanapalle, 517325, India; Nirwal S., Indian Institute of Technology (Indian School of Mines), Jharkhand, Dhanbad, 826004, India

PANI/Bi2O3 polymeric nanocomposite for the reduction of 4-nitrophenol
subject: 4-Nitrophenol; Nanocomposites; PANI/Bi2O3; Reduction
description: Nitro-aromatics pollute the aquatic environment and reach human beings via drinking water. 4-Nitrophenol (4-NP) is the most common pollutant among them and can be reduced to non-toxic 4-aminophenol in the presence of sodium borohydride (NaBH4). Polyaniline/bismuth oxide (PANI/Bi2O3) nanocomposite is synthesized from aniline and Bi2O3 by chemical oxidative polymerization. The composition and structural properties of PANI/Bi2O3 composite are identified by various characterization methods like X-ray powder diffraction, fourier transform infrared spectroscopy, thermogravimetric analysis , and zeta potential analysis. The synthesized PANI/Bi2O3 shows high catalytic efficiency towards the reduction of 4-NP in the presence of NaBH4 under optimized reaction conditions. The numerous active sites on the composite and the presence of PANI/Bi2O3 interface are the reasons for the reduction of 4-NP to 4-aminophenol. A complete degradation is achieved in 15min with 0.1g of the composite. This nanocomposite shows good stability for five cycles without losing efficiency. PANI/Bi2O3 possesses a high reduction capacity and can be used to reduce other nitro organic pollutants in water. The aim of the study is to study the effective catalytic reduction of 4-NP using PANI/Bi2O3. Graphical abstract: [Figure not available: see fulltext.] 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
creator: Joseph G.; Pinheiro D.; Krishna Mohan M.; Devi Kalathiparambil Rajendra Pai S.
source: Polymer Bulletin, Vol-80, No. 8, pp. 8467-8481.
publisher: Springer Science and Business Media Deutschland GmbH
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 1700839; CODEN: POBUD
format: Online
language: English
type: Article
coverage: Joseph G., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India; Pinheiro D., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India; Krishna Mohan M., Department of Sciences and Humanities, School of Engineering and Technology, CHRIST (Deemed to be University), Kumbalagodu, Mysore Road, Karnataka, Bangalore, 560074, India; Devi Kalathiparambil Rajendra Pai S., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bangalore, 560029, India

A Novel Survey for Young Substellar Objects with the W-band Filter. VI. Spectroscopic Census of Substellar Members and the IMF of the ? Orionis Cluster
description: Low-mass stars and substellar objects are essential in tracing the initial mass function (IMF). We study the nearby young ? Orionis cluster (d ? 408 pc, age ? 1.8 Myr) using deep near-infrared (NIR) photometric data in the J, W, and H bands from WIRCam on the Canada-France-Hawaii Telescope. We use the water absorption feature to select brown dwarfs photometrically and confirm their nature spectroscopically with IRTF-SpeX. Additionally we select candidate low-mass stars for spectroscopy and analyze their membership and those of literature sources using astrometry from Gaia DR3. We obtain NIR spectra for 28 very-low-mass stars and brown dwarfs and estimate their spectral type between M3 and M8.5 (masses ranging between 0.3 and 0.01 M ?). Apart from these, we also identify five new planetary-mass candidates which require further spectroscopic confirmation of youth. We compile a comprehensive catalog of 170 spectroscopically confirmed members in the central region of the cluster, for a wide mass range of ?19-0.004 M ?. We estimate the star-to-brown-dwarf ratio to be ?4, within the range reported for other nearby star-forming regions. With the updated catalog of members we trace the IMF down to 4 M Jup and we find that a two-segment power law fits the substellar IMF better than a log-normal distribution. 2023. The Author(s). Published by the American Astronomical Society.
creator: Damian B.; Jose J.; Biller B.; Herczeg G.J.; Albert L.; Allers K.; Zhang Z.; Liu M.C.; Dubber S.; Paul K.; Chen W.-P.; Lalchand B.; Sharma T.; Oasa Y.
source: Astrophysical Journal, Vol-951, No. 2
publisher: Institute of Physics
date: 2023-01-01
rights: All Open Access; Gold Open Access; Green Open Access
relation: ISSN: 0004637X
format: Online
language: English
type: Article
coverage: Damian B., Department of Physics and Electronics, CHRIST (Deemed to be University, Hosur Road, Bengaluru, 560029, India; Jose J., Indian Institute of Science Education and Research (IISER) Tirupati, Rami Reddy Nagar, Karakambadi Road, Mangalam (P.O.), Tirupati, 517507, India; Biller B., SUPA, Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh, EH9 3HJ, United Kingdom, Centre for Exoplanet Science, University of Edinburgh, Edinburgh, United Kingdom; Herczeg G.J., Kavli Institute for Astronomy and Astrophysics, Peking University, Yiheyuan 5, Haidian Qu, Beijing, 100871, China, Department of Astronomy, Peking University, Yiheyuan 5, Haidian Qu, Beijing, 100871, China; Albert L., Institut de Recherche sur les Exoplanes (iREx), Universitde Montrl, Dartement de Physique, C.P. 6128 Succ. Centre-ville, Montrl, H3C 3J7, QC, Canada; Allers K., Department of Physics and Astronomy, Bucknell University, Lewisburg, 17837, PA, United States; Zhang Z., Department of Astronomy & Astrophysics, University of California, Santa Cruz, 1156 High St, Santa Cruz, 95064, CA, United States; Liu M.C., Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, 96822, HI, United States; Dubber S., SUPA, Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh, EH9 3HJ, United Kingdom, Centre for Exoplanet Science, University of Edinburgh, Edinburgh, United Kingdom; Paul K., Department of Physics and Electronics, CHRIST (Deemed to be University, Hosur Road, Bengaluru, 560029, India; Chen W.-P., Institute of Astronomy, National Central University, 300 Zhongda Road, Zhongli, Taoyuan, 32001, Taiwan, Department of Physics, National Central University, 300 Zhongda Road, Zhongli, Taoyuan, 32001, Taiwan; Lalchand B., Institute of Astronomy, National Central University, 300 Zhongda Road, Zhongli, Taoyuan, 32001, Taiwan; Sharma T., Institute of Astronomy, National Central University, 300 Zhongda Road, Zhongli, Taoyuan, 32001, Taiwan; Oasa Y., …

Lithiated indole derivative in reduced graphene oxide framework as efficient electrode for lithium-ion battery
subject: Charge storage; Cyclic voltammetry; Indole derivative; Li-ion battery; Reduced graphene oxide
description: The traditional wet-chemical approach was used to synthesise N,N?-bis-Ind[?1H-indol-3-ylmethylidene]benzene-1,2-diamine (N,N?-bis-IBD), which was then lithiated using ball milling. The physical and spectrochemical characteristics of the as-prepared materials in lithiated and unlithiated forms were found to be considerably different. The activity of the lithiated N,N?-bis-IBD electrode material towards battery application was investigated using cyclic voltammetry (CV) and galvanostatic charge potential limit (GCPL) studies. The electrochemical studies on this electrode material revealed the active strong redox characteristics and anodic behaviour in aqueous electrolyte. At 100 cycles in aqueous medium, the lithiated moiety exhibited an impressive battery performance with a discharge capacity of 277 mAhg?1. Interestingly, addition of 20 wt % reduced graphene oxide (rGO) to lithiated N,N?-bis-IBD sample greatly improved the battery performance showing a high discharge capacity of 766 mAhg?1 after 100 cycles. The improved electrochemical performance implicates rGO-mixed lithiated indole-based composite as an effective anode material for lithium-ion battery (LIBs) application. 2023 Elsevier B.V.
creator: Naik L.; Shetty V.R.; Kumar R.A.; Suresh G.S.; Mahadevan K.M.; Bubbly S.G.; Gudennavar S.B.
source: Synthetic Metals, Vol-297
publisher: Elsevier Ltd
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 3796779; CODEN: SYMED
format: Online
language: English
type: Article
coverage: Naik L., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560 029, India; Shetty V.R., Department of Chemistry, CHRIST University, Karnataka, Bangalore, 560 029, India; Kumar R.A., Department of Studies and Research in Chemistry, Kuvempu University, PG-Centre, Karnataka, Kadur, 577 548, India; Suresh G.S., PG-Department of Chemistry and Research Centre, NMKRV College for Women, Jayanagar, Karnataka, Bangalore, 560 001, India; Mahadevan K.M., Department of Studies and Research in Chemistry, Kuvempu University, PG-Centre, Karnataka, Kadur, 577 548, India; Bubbly S.G., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560 029, India; Gudennavar S.B., Department of Physics and Electronics, CHRIST University, Karnataka, Bangalore, 560 029, India

Impact of terminal group on azobenzene liquid crystal dimers for photo-responsive optical storage devices
subject: Optical storage device; Photoisomerization; Photoresposive LC dimers; Self-assembled H aggregates
description: Three new series of photo responsive dimers bearing different terminal functional groups (-CN, -COOEt, -OMe) and variable aliphatic spacers have been synthesized and investigated in detail. The molecular structures of the new materials were proved using different spectroscopic techniques and their liquid crystal self-assembly was characterized using differential scanning calorimetry (DSC), polarized light microscope (POM) and X-ray diffraction (XRD). Moreover, their photo switching behaviour was investigated in details in solution. The results revealed that, almost all members of the dimeric materials are mesomorphic exhibit either nematic or both smectic A and nematic phases. Under UV illumination the materials show interesting photo-switching properties, reaching a photo-stationary state in 40 s and a thermal back-relaxation time of approximately 35 h in solution. Finally, a fabricated device authenticates the potential of the reported materials for optical storage devices. 2023 Elsevier B.V.
creator: Ranjitha B.S.; Sandhya Kumari D.; Shetty A.; Shanker G.; Alaasar M.; Pashameah R.; Hegde G.
source: Journal of Molecular Liquids, Vol-383
publisher: Elsevier B.V.
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 1677322; CODEN: JMLID
format: Online
language: English
type: Article
coverage: Ranjitha B.S., Department of Chemistry, Bangalore University, Jnana Bharathi Campus, Bengaluru, 560056, India; Sandhya Kumari D., Department of Chemistry, Bangalore University, Jnana Bharathi Campus, Bengaluru, 560056, India; Shetty A., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India, Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Shanker G., Department of Chemistry, Bangalore University, Jnana Bharathi Campus, Bengaluru, 560056, India; Alaasar M., Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt; Pashameah R., Department of of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah, 24230, Saudi Arabia; Hegde G., Centre for Advanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India

Spirocyclic isatin-derivative analogues: Solvation, structural, electronic, topological, reactivity properties, and anti-leukaemic biological evaluation
subject: ADME; DFT; Docking; Leukaemia; Topology
description: The present work investigates, via computational methods, three spirocyclic isatin derivatives with ?-methylene-?-butyrolactone cores, whose synthesis, experimental data and structural-activity relationships have been reported, to compare their properties and biological action. DFT (Density Functional Theory) studies, including geometry optimisation, FMO Analysis, theoretical UV spectral analysis, NBO and NLO studies, are performed using Gaussian 09 W with a standard basis set. The IEFPCM model is employed to investigate the solvent effect on the reactivity and stability of the compounds. Topological analyses are also performed, including ELF, LOL, RDG and charge transfer studies. ADME profiling is performed using SwissADME online tool. Anti-leukaemic target proteins are selected and docked with the title compounds to understand their suitability to act against leukaemic conditions. 2023 Elsevier B.V.
creator: Parakkal S.C.; Lalnunfeli H.; Sidan S.; Datta R.
source: Computational and Theoretical Chemistry, Vol-1225
publisher: Elsevier B.V.
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 2210271X
format: Online
language: English
type: Article
coverage: Parakkal S.C., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Lalnunfeli H., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Sidan S., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Datta R., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India

Coca-Cola product placement strategy backfires a case of celebrity activism
subject: Athlete activism; Branding; Celebrity activism; Celebrity endorsement; Product placement
description: Research methodology: A secondary research method was used to collect data for this case. The authors have made use of newspaper articles and published articles written by journalists and experts which are available in the public domain. Case overview/synopsis: Instances of celebrity activism such as athlete activism are rising. Social media has amplified the voice of celebrities and given them a personal channel to directly communicate with their fans without any media censorship. The same is true especially concerning endorsement by sports superstars, who now seem to have a mind of their own, independent of the official line of clubs, tournament organizers or sponsoring companies. This case discusses the embarrassment and financial loss faced by soft drinks giant Coca-Cola due to the public snub by football superstar Cristiano Ronaldo during an official press conference of the EURO 2020 championship. Complexity academic level: Undergraduate and postgraduate students studying marketing management and brand management courses in business management and commerce streams can use this case. This case can also be used for marketing specialization students at the undergraduate and postgraduate levels. 2023, Emerald Publishing Limited.
creator: Saldanha A.; Aranha R.
source: CASE Journal, Vol-19, No. 5, pp. 737-745.
publisher: Emerald Publishing
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 15449106
format: Online
language: English
type: Article
coverage: Saldanha A., Department of Marketing, St. Joseph's Institute of Management, Bangalore, India; Aranha R., Department of HR, School of Business and Management, CHRIST (Deemed to be University, Bangalore, India

The Mediating Effect of Employee Engagement: How Employee Psychological Empowerment Impacts the Employee Satisfaction? A Study of Maldivian Tourism Sector
subject: Employee engagement; employee satisfaction; Maldivian resorts; psychological empowerment
description: This study aims to examine the mediation of employee engagement on the relationship between employee psychological empowerment and employee job satisfaction, which helps to retain more customers with better service. An empirical analysis was done on Maldivian resorts, and 243 employees were randomly selected from different resorts in the Maldives. The proposed model was tested using IBM SPSS AMOS 25. The results indicate that psychological empowerment had a significant effect on job satisfaction of the resort employees through employee engagement. The Maldivian economy is based on the tourism sector, and a significant amount of gross domestic product (GDP) depends on the tourism sector. Resorts and guesthouses are the power hubs for the economic development of the country, and employees are the primary source of service providers to tourists, which helps the resorts to retain their tourists. Hence, this study concludes that employees psychological empowerment and employees engagement are crucial to improve employee satisfaction. 2023 IMI.
creator: Alagarsamy S.; Mehrolia S.; Aranha R.H.
source: Global Business Review, Vol-24, No. 4, pp. 768-786.
publisher: Sage Publications India Pvt. Ltd
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 9721509
format: Online
language: English
type: Article
coverage: Alagarsamy S., School of Business and Management, Christ (Deemed to be University), Bangalore, India; Mehrolia S., School of Business and Management, Christ (Deemed to be University), Bangalore, India; Aranha R.H., School of Business and Management, Christ (Deemed to be University), Bangalore, India

Dynamic Offloading Technique for Latency-Sensitive Internet of Things Applications using Fog Computing
subject: Cloud Computing; Fog Computing; Internet of Things; Latency sensitive IoT; Quality of Service; Task Offloading
description: Internet of Things (IoT) has evolved as a novel paradigm that provides com-putation power to different entities connected to it. IoT offers services to multiple sectors such as home automation, industrial automation, traffic management, healthcare sector, agriculture industry etc. IoT generally relies on cloud data centers for extended analytics, processing and storage support. The cloud offers highly scalable and robust platform for IoT applications. But latency sensitive IoT applications suffer delay issues as the cloud lies in remote location. Edge/fog computing was introduced to overcome the issues faced by delay-sensitive IoT applications. These platforms lie close to the IoT network, reducing the delay and response time. The fog nodes are usually distributed in nature. The data has to be properly offloaded to available fog nodes using efficient strategies to gain benefit from the integration. Differ-ent offloading schemes are available in the literature to overcome this prob-lem This paper proposes a novel offloading approach by combining two effi-cient metaheuristic algorithms, Honey Badger Algorithm (HBA) and Fla-mingo Search Algorithm (FSA) termed as HB-FS algorithm. The HB-FS is executed in an iterative manner optimizing the objective function in each it-eration. The performance evaluation of the proposed approach is done with different existing metaheuristic algorithms and the evaluations show that the proposed work outperforms the existing algorithms in terms of latency, response time and execution time. The methodology also offers better degree of imbalance with proper load balancing under different conditions. 2023 Authors. All rights reserved.
creator: Thomas P.; Jose D.V.
source: International Journal on Recent and Innovation Trends in Computing and Communication, Vol-11, No. 6, pp. 103-112.
publisher: Auricle Global Society of Education and Research
date: 2023-01-01
rights: All Open Access; Gold Open Access
relation: ISSN: 23218169 | CS; 2023-2024; Vol-1 00115-00122
format: Online
language: English
type: Article
coverage: Thomas P., Dept of Computer Science, CHRIST (Deemed to be University), Bangalore, India; Jose D.V., Dept of Computer Science, CHRIST (Deemed to be University), Bangalore, India

A comprehensive review of AI based intrusion detection system
subject: Artificial intelligence; Deep learning; Ensemble learning; Intrusion detection system; Machine learning
description: In today's digital world, the tremendous amount of data poses a significant challenge to cyber security. The complexity of cyber-attacks makes it difficult to develop efficient tools to detect them. Signature-based intrusion detection has been the common method used for detecting attacks and providing security. However, with the emergence of Artificial Intelligence (AI), particularly Machine Learning, Deep Learning and ensemble learning, promising results have been shown in detecting attacks more efficiently. This review discusses how AI-based mechanisms are being used to detect attacks effectively based on relevant research. To provide a broader view, the study presents taxonomy of the existing literature on Machine Learning (ML), Deep learning (DL), and ensemble learning. The analysis includes 72 research papers and considers factors such as the algorithm and performance metrics used for detection. The study reveals that AI-based intrusion detection methods improve accuracy, but researchers have primarily focused on improving performance for detecting attacks rather than individual attack classification. The main objective of the study is to provide an overview of different AI-based mechanisms in intrusion detection and offer deeper insights for future researchers to better understand the challenges of multi-classification of attacks. 2023
creator: Sowmya T.; Mary Anita E.A.
source: Measurement: Sensors, Vol-28
publisher: Elsevier Ltd
date: 2023-01-01
rights: All Open Access; Gold Open Access
relation: ISSN: 26659174
format: Online
language: English
type: Article
coverage: Sowmya T., Department of CSE, Christ University Bangalore, CMR Institute of Technology, Bengaluru, India; Mary Anita E.A., Department of CSE, Christ University, Bangalore, India

Quantum tunneling rotor as a sensitive atomistic probe of guests in a metal-organic framework
description: Quantum tunneling rotors in a zeolitic imidazolate framework ZIF-8 can provide insights into local gas adsorption sites and local dynamics of porous structure, which are inaccessible to standard physisorption or x-ray diffraction sensitive primarily to long-range order. Using in situ high-resolution inelastic neutron scattering at 3 K, we follow the evolution of methyl tunneling with respect to the number of dosed gas molecules. While nitrogen adsorption decreases the energy of the tunneling peak, and ultimately hinders it completely (0.33 meV to zero), argon substantially increases the energy to 0.42 meV. Ab initio calculations of the rotational barrier of ZIF-8 show an exception to the reported adsorption sites hierarchy, resulting in anomalous adsorption behavior and linker dynamics at subatmospheric pressure. The findings reveal quantum tunneling rotors in metal-organic frameworks as a sensitive atomistic probe of local physicochemical phenomena. 2023 authors. Published by the American Physical Society.
creator: Titov K.; Ryder M.R.; Lamaire A.; Zeng Z.; Chaudhari A.K.; Taylor J.; Mahdi E.M.; Rogge S.M.J.; Mukhopadhyay S.; Rudi? S.; Van Speybroeck V.; Fernandez-Alonso F.; Tan J.-C.
source: Physical Review Materials, Vol-7, No. 7
publisher: American Physical Society
date: 2023-01-01
rights: All Open Access; Green Open Access; Hybrid Gold Open Access
relation: ISSN: 24759953
format: Online
language: English
type: Article
coverage: Titov K., Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom; Ryder M.R., Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom, ISIS Neutron and Muon Source, Science and Technology Facility Council, UKRI, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, United Kingdom, Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, 37831, TN, United States; Lamaire A., Center for Molecular Modeling (CMM), Ghent University, Technologiepark-Zwijnaarde 46, Zwijnaarde, 9052, Belgium; Zeng Z., Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom; Chaudhari A.K., Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom, Department of Chemistry, Christ University, Hosur Road, Bangalore, 560029, India; Taylor J., ISIS Neutron and Muon Source, Science and Technology Facility Council, UKRI, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, United Kingdom; Mahdi E.M., Multifunctional Materials & Composites (MMC) Laboratory, Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom; Rogge S.M.J., Center for Molecular Modeling (CMM), Ghent University, Technologiepark-Zwijnaarde 46, Zwijnaarde, 9052, Belgium; Mukhopadhyay S., ISIS Neutron and Muon Source, Science and Technology Facility Council, UKRI, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, United Kingdom; Rudi? S., ISIS Neutron and Muon Source, Science and Technology Facility Council, UKRI, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, United Kingdom; Van Speybroeck V., Center for Molecular Modeling (CMM),…

Facile fabrication of stable wettability gradients on elastomeric surfaces for applications in water collection and controlled cell adhesion
description: We have developed a simple and effective method to prepare stable wettability gradients on an elastomeric soft substrate, polydimethylsiloxane (PDMS). In our method, a partially cured PDMS film composed of a definite ratio of elastomer and crosslinking agent was heated over a hot surface with a temperature gradient. This causes differential thermal curing of the PDMS film and the water contact angle (wettability) of the resultant surface showed gradual variation across the length. This method allows us to design and fabricate wettability gradients with rationally controlled directionality and shapes (e.g., linear and radial gradients). The stability of the wettability gradients was studied and a chemical treatment method was developed to enhance the stability at room temperature. Stable wettability gradients prepared through this method can find applications as reliable platforms and scaffolds offering controlled or directional wetting and adhesion. We have demonstrated the practical applications of the wettability gradients in directional water collection, controlled crystallization of materials, and controlled cell adhesion of HeLa cells, osteoblasts and NIH/3T3 cells. The multi-functional characteristics of these wettable gradients are expected to be handy in other domains using soft materials and interfaces also. 2023 The Royal Society of Chemistry.
creator: Raj S.S.; Mathew R.M.; Davis D.; Varanakkottu S.N.; Srinivasan A.; Vinod T.P.
source: Soft Matter, Vol-19, No. 29, pp. 5560-5574.
publisher: Royal Society of Chemistry
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 1744683X; PubMed ID: 37436460; CODEN: SMOAB
format: Online
language: English
type: Article
coverage: Raj S.S., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Mathew R.M., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Davis D., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India; Varanakkottu S.N., Department of Physics, National Institute of Technology Calicut, 673601, India; Srinivasan A., Division of Nanoscience and Technology, School of Life Sciences, JSS Academy of Higher Education and Research, Karnataka, Mysore, 570015, India; Vinod T.P., Department of Chemistry, CHRIST (Deemed to be University), Hosur Road, Bengaluru, 560029, India

Analysis of factors impacting firm performance of MSMEs: lessons learnt from COVID-19
subject: COVID-19; Firm performance; MSMEs; Organizational resilience; Supply chain disruptions
description: Purpose: The micro, small and medium scale enterprises (MSMEs) faced various challenges in the ongoing COVID-19 pandemic, making it challenging to remain competitive and survive in the market. This research develops a model for MSMEs to cope with the current pandemic's operational and supply chain disruptions and similar circumstances. Design/methodology/approach: The exhaustive literature review helped in identifying the constructs, their items and five hypotheses are developed. The responses were collected from the experts working in MSMEs. Total 311 valid responses were received, and the structural equation modeling (SEM) approach was used for testing and validating the proposed model. Findings: Critical constructs identified for the study are-flexibility (FLE), collaboration (COL), risk management culture (RMC) and digitalization (DIG). The statistical analysis indicated that the four latent variables, flexibility, digitalization, risk management culture and collaboration, contribute significantly to the firm performance of MSMEs. Organizational resilience (ORS) mediates the effects of all the four latent variables on firm performance (FP) of MSMEs. Practical implications: The current study's findings will be fruitful for the manufacturing MSMEs and other firms in developing countries. It will enable them to identify the practices that significantly help in achieving the firm performance. Originality/value: The previous researches have not considered the effect of organizational resilience on the firm performance of MSMEs. This study attempts to fill this gap. 2022, Emerald Publishing Limited.
creator: Baral M.M.; Mukherjee S.; Nagariya R.; Singh Patel B.; Pathak A.; Chittipaka V.
source: Benchmarking, Vol-30, No. 6, pp. 1942-1965.
publisher: Emerald Publishing
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 14635771; CODEN: BQMTF
format: Online
language: English
type: Article
coverage: Baral M.M., Department of Operations, GITAM Institute of Management, GITAM (Deemed to be University), Visakhapatnam, India; Mukherjee S., Department of Operations, GITAM Institute of Management, GITAM (Deemed to be University), Visakhapatnam, India; Nagariya R., School of Business and Management, CHRIST University, Delhi NCR Campus, Ghaziabad, India; Singh Patel B., Department of Operations Management, Thiagarajar School of Management, Madurai, India; Pathak A., Department of Management, Bule Hora University, Bule Hora, Ethiopia; Chittipaka V., School of Management Studies, Indira Gandhi National Open University, New Delhi, India

Covid related distress and its impact on mental health a study based on early and late adolescents in Bangalore
subject: Adolescents; Anxiety; Depression symptoms; Mental well-being
description: The closure of educational institutions and social distancing norms have impacted the life of adolescents. Forced to stay at home, limited interaction with friends and online schooling are some of the factors that have affected their lives. While some researchers believe that the true extent of the impact on the mental health of the adolescent is still not clear, others propose that the impact will only be observable in later stages of their life. In an attempt to understand the impact of the COVID related distress factors on the mental well being of adolescents, the current study collected data from 100 early adolescents and 100 late adolescents. The COVID related distress factors were measured through an instrument designed for the same, while mental well being was measured through depression symptoms and general anxiety levels. The finings of the study identify the particular distress factors that have a significant impact on the mental well-being of adolescents. The findings also identify the factors that are significant in predicting the mental well-being of each category, separately. 2023
creator: Mathew J.; Gomes R.; Nair S.; Bhaskar S.; Yadav P.
source: Children and Youth Services Review, Vol-151
publisher: Elsevier Ltd
date: 2023-01-01
rights: Restricted Access
relation: ISSN: 1907409; CODEN: CYSRD
format: Online
language: English
type: Article
coverage: Mathew J., School of Business and Management, CHRIST (Deemed to be University), Bangalore, India; Gomes R., CHRIST (Deemed to be University), Bangalore, India, Jyoti Nivas College, Bangalore, India; Nair S., School of Business and Management, CHRIST (Deemed to be University), Bangalore, India; Bhaskar S., CHRIST (Deemed to be University), Bangalore, India; Yadav P., CHRIST (Deemed to be University), Bangalore, India

Assimilating sense into disaster recovery databases and judgement framing proceedings for the fastest recovery
subject: Cloud and on-premises; Cloud database recovery; Database disaster recovery; database integrations; Intelligence to standby; Oracle on-premises database; recovery
description: The replication between the primary and secondary (standby) databases can be configured in either synchronous or asynchronous mode. It is referred to as out-of-sync in either mode if there is any lag between the primary and standby databases. In the previous research, the advantages of the asynchronous method were demonstrated over the synchronous method on highly transactional databases. The asynchronous method requires human intervention and a great deal of manual effort to configure disaster recovery database setups. Moreover, in existing setups there was no accurate calculation process for estimating the lag between the primary and standby databases in terms of sequences and time factors with intelligence. To address these research gaps, the current work has implemented a self-image looping database link process and provided decision-making capabilities at standby databases. Those decisions from standby are always in favor of selecting the most efficient data retrieval method and being in sync with the primary database. The purpose of this paper is to add intelligence and automation to the standby database to begin taking decisions based on the rate of concurrency in transactions at primary and out-of-sync status at standby. 2023 Institute of Advanced Engineering and Science. All rights reserved.
creator: Shaik V.; Kalyanasundaram N.
source: International Journal of Electrical and Computer Engineering, Vol-13, No. 4, pp. 4234-4245.
publisher: Institute of Advanced Engineering and Science
date: 2023-01-01
rights: All Open Access; Gold Open Access; Green Open Access
relation: ISSN: 20888708
format: Online
language: English
type: Article
coverage: Shaik V., Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, India; Kalyanasundaram N., Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangalore, India