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Radiation effects on 3D rotating flow of Cu-water nanoliquid with viscous heating and prescribed heat flux using modified Buongiorno model
In this article, the three-dimensional (3D) flow and heat transport of viscous dissipating Cu-H2O nanoliquid over an elongated plate in a rotating frame of reference is studied by considering the modified Buongiorno model. The mechanisms of haphazard motion and thermo-migration of nanoparticles along with effective nanoliquid properties are comprised in the modified Buongiorno model (MBM). The Rosseland radiative heat flux and prescribed heat flux at the boundary are accounted. The governing nonlinear problem subjected to Prandtls boundary layer approximation is solved numerically. The consequence of dimensionless parameters on the velocities, temperature, and nanoparticles volume fraction profiles is analyzed via graphical representations. The temperature of the base liquid is improved significantly owing to the existence of copper nanoparticles in it. The phenomenon of rotation improves the structure of the thermal boundary layer, while, the momentum layer thickness gets reduced. The thermal layer structure gets enhanced due to the Brownian movement and thermo-migration of nanoparticles. Moreover, it is shown that temperature enhances owing to the presence of thermal radiation. In addition, it is revealed that the haphazard motion of nanoparticles decays the nanoparticle volume fraction layer thickness. Also, the skin friction coefficients found to have a similar trend for larger values of rotation parameter. Furthermore, the results of the single-phase nanoliquid model are limiting the case of this study. 2021, The Author(s). -
Development of ?-carrageenan-based transparent and absorbent biodegradable films for wound dressing applications
Wound healing remains a critical challenge in healthcare, requiring advanced wound dressings with superior properties like transparency, absorbency, and biocompatibility. However, gaps exist in the use of marine-derived biopolymers for sustainable dressings. This study addresses this gap by combining ?-carrageenan (KC) with polyvinyl pyrrolidone (PVP) to develop transparent and absorbent biodegradable films through solvent casting and lyophilization techniques. Lyophilized films exhibited superior absorbency (9.17 g/cm2) and moisture management, with a water vapour transmission rate of 3990.67 g/m2/24 h, while solvent-cast films showed 78 % transmittance, enabling wound visualization. Mechanical testing revealed high tensile strength (31.5 MPa) and folding endurance (410 folds), ensuring durability. In vitro bactericidal assays confirmed efficacy against MRSA and E. coli, and in vivo tests on Wistar rats showed complete wound healing within 16 days with 91.1 % closure, outperforming untreated controls (76.7 %). This is the first study to explore lyophilized KC-PVP films for wound dressing applications, demonstrating potential for drug release, absorbency, and biodegradability. The innovative combination of biopolymers and fabrication techniques offers a sustainable, high-performance solution for wound care. 2024 Elsevier B.V. -
N'-[(1E)-1-(2-Fluorophenyl)Ethylidene]Pyridine-3-Carbohydrazide /
Acta Crystallographica Section E, Vol-E70(o115), ISSN-1600-5368 -
Impact of Macroeconomic Uncertainty on Stock Market Return Volatility in India : Evidence from Vector Autoregressive (VAR) Analysis
Pacific Business Review International Vol. 5, Issue 4, pp. 50-62, ISSN No. 0974-438X -
Detection of picric acid in industrial effluents using multifunctional green fluorescent B/N-carbon quantum dots
Carbon quantum dots have recently gained widespread attention due to their excellent physicochemical features. The rapid escalation in the dumping of hazardous chemicals into water, spurred demand for developing efficient and selective sensors for toxic chemicals. Herein, we have developed a novel fluorescence sensor for picric acid which is a major pollutant in industrial effluents. The new strategy exploits the development of a fluorescence sensor based on N-doped carbon quantum dots (N-CQDs) followed by boron functionalization. The N-CQDs were synthesized in a rapid single-step microwave technique by employing L-serine and citric acid. Subsequent boron functionalization of N-CQDs was carried out using boric acid for the synthesis of Boron-nitrogen carbon quantum dots (B/N-CQDs). The B/N-CQDs were found to exhibit high quantum yield (24%), good water solubility, outstanding photostability features, and bright green fluorescence under UV light. The morphology of B/N-CQDs is spherical, with scattered particle sizes ranging from 2 to 8 nanometers. Furthermore, B/N-CQDs were found to be an effective fluorescence probe for the selective and sensitive detection of picric acid, with a good linear range of 37 nM-30 M and a detection limit of 1.8 nM. The Photoluminescence (PL) intensity of B/N-CQDs was selectively quenched by picric acid. The quenching mechanism was conclusively established using fluorescence lifetime decay studies. Moreover, the synthesized B/N-CQDs was successfully employed for the analysis of picric acid from industrial effluents and cell imaging with Hela cells to showcase the utility of the developed fluorescent probe. 2022 Elsevier Ltd -
Automated testbed and real-time port analysis for reconfigurable inputoutput boards
In the computational world, automation plays a vital role in every aspect. The idea of developing and testing Reconfigurable InputOutput (RIO) Boards automatically without manual interaction is a challenging task. Initially, testing was done manually which takes a lot of time and also requires human interaction. With the proposed idea one can reduce human interaction and testing time with smart automated design setup. This testing includes testing of various functionalities of the RIO boards. This can be done by testing the features of each port with its pin configuration. To be more precise, in this process an automated testbed is designed and algorithms are proposed to verify the features of each pin such as Digital Read, Digital Write, Analog Read and Analog Write of the RIO boards along with the motor pins. Thus, the proposed method makes the setup simple, without any complications by giving the instructions to perform the testing process for each board without human interaction. Results show that the proposed method can reduce time consumption 95%, human interaction by 95% and increase testing accuracy to 87%. 2020 Informa UK Limited, trading as Taylor & Francis Group. -
An energy efficient approach of deep learning based soft sensor for air quality management
Monitoring environmental pollution is emerging as a recent study area especially in urban and highly polluted industrial areas. This field deploys many chemical analysis models and data driven models through soft sensors. But bio indicators are a more feasible, cost effective and precise monitoring model, which are rarely explored. This paper is based on growth monitoring of Cryptogams, a bio indicator which is capable of directly reflecting the pollution levels in the region of growth. A novel enhanced and energy efficient deformable active contour model is introduced to trace the development of transplanted Cryptogams at various sites with diverse pollution levels. The vegetative development of Cryptogams is monitored for duration of two weeks. The proposed energy efficient contour tracing model proves its superiority in precise tracing of the Cryptogam development, thus aiding in accurate pollution monitoring. The VGG 16 architecture built using deep convolutional neural network by constructing stacks of filters. VGG 16 architecture showed high performance when compared with other existing models. The accuracy is compared with the Ant colony optimization using GVF. 2022 The Authors -
Growth and characterization of certain III-VI compound semiconducting crystals
The rapid advances in solid-state physics over the last few decades have uncovered many effects in crystals,which have formed the basis of large industries. the availability of crystals from the natural resources is inadequate to meet the need of these industries and also does not give sufficient variety. This led to a great deal of research work on the method of production of crystals artificially. -
Understanding Peer Victimisation and Related Coping Strategies Among Young Adults
Peer victimisation is a term used to describe the process of an individual being bullied by other peers, physically as well as socially, which affects the victims personality, emotional functioning, behaviour, and well-being. In response, the victims adopt several coping strategies to deal with the situation. However, the experience makes an indelible mark on those who have been victims of the process. This current study aims to understand the perspectives of young adults who have experienced peer victimisation and also explore the coping strategies used by them. The study adopts a qualitative research design, based on which data was collected from young adults (n = 10) using semi-structured interviews. After a process of screening, participants were chosen using a purposive sampling method. The data collected was analysed using Interpretative Phenomenological Analysis (IPA), through which various super-ordinate themes emerged. The significant themes focus on the nature of peers, experiences of peer victimisation, risk factors leading to peer victimisation, consequences of peer victimisation, coping mechanisms, and strategies to prevent peer victimisation. The findings highlight the understanding of the repercussions of peer victimisation and emphasise the need to adopt innovative strategies, implement pre-emptive interventions, and mandate decisive measures to mitigate instances of peer victimisation. The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024. -
Integrating rod-shaped nickel molybdate@polypyrrole matrix for sustainable adsorptive removal of organic dye: Kinetics, isotherm, and thermodynamics study
Water pollution presents a significant global challenge that impacts the environment. The release of industrial effluents significantly contributes to this. Adsorption studies offer a sustainable and cost-effective solution to efficiently remove organic pollutants from water. The current study comprises a polypyrrole/nickel molybdate composite for the effective adsorption of organic dyes, such as methylene blue, from aqueous solutions. The catalyst has been comprehensively characterized using various techniques, including XRD, FE-SEM, FT-IR, HR-TEM, XPS, BET, TGA, zeta potential, and DLS analysis. Adsorption studies demonstrate up to 97% removal efficiency in 60 min. This study also evaluates the impact of various parameters, such as temperature, pH, dye concentration, and quantity of the catalyst, on the adsorption efficiency. The R2 value of 0.99 that is obtained in the kinetics study suggests the suitability of the adsorption process toward pseudo-second-order kinetics. The adsorption isotherm study reveals that the adsorption follows Freundlich's adsorption isotherm. The maximum adsorption capacity of the study is found to be 17.76 mg/g. Investigations into thermodynamic study give a ?H value of ?19.21 J/mol K, indicating the exothermic behavior, and ?G of ?6.95 KJ/mol, suggesting the spontaneity of the composite during the adsorption process. These results demonstrate the potential of the developed material as an effective adsorbent for removing organic dyes from water sources. 2023 Wiley Periodicals LLC. -
Cross layer design with weighted sum approach for extending device sustainability in smart cities
IoT associates with MEMS technology and various other technologies to connect smart devices globally. Providing reliable interaction between the smart devices and maintaining the battery sustainability of smart devices are the major demand since most of the IoT devices are run by a battery source. Device sustainability is the prime concern in most the IoT applications such as smart cities, e-health, smart grid, etc. Thus, we have come up with a cross layer design that improves the device sustainability and lifetime of the IoT networks in smart cities. In the proposed design, physical layer and data link layer information is utilized by the network layer to explore the energy efficient communication among the IoT devices, since 70% - 80% of device energy is utilized for its communication. Cross-layer design can be an optimal solution to enhance the modalities of the wireless network. The Weighted sum approach is used in the proposed model which is an effective computation method to analyze and identify the routing metrics that are associated with energy efficiency. Based on the routing metric analysis (Table 2) it is found that a particular combination of routing metrics performs effective power utilization (by attaining optimal transmission power) and achieves sustained device lifetime. From the obtained results, it is noticed that the MTPM + ETP + ND routing metric combination outperforms all the other combinations, and designing the cross-layer mechanism with the weighted sum approach computation gives better network performance without compromising the device lifetime. In smart cities applications, the device scalability is huge, since frequent battery replacement is a very difficult task. Therefore, we come up with an efficient network model that is more suitable to maintain device sustainability in smart cities. 2021 Elsevier Ltd -
MEDIATING EFFECT OF PERCEPTION OF POLITICS BETWEEN DISTRIBUTIVE JUSTICE AND TURNOVER INTENTION OF EMPLOYEES IN INFORMATION TECHNOLOGY ORGANIZATIONS
During the past few decades, organizational researchers have increasingly focused their attention on the subjective work issues and their impact on various work related outcomes. One of the most prominently studied factor perception of organizational politics has received much recent conceptual and empirical attention. Political work environment are responsible for a variety of harmful work consequences like higher stress, lower job satisfaction and commitment, diminished worker productivity and higher rate of turnover (Ferris et.al 1989, 2002; Kacmar and Baron, 1999) Some researchers focused on the distributive justice aspect as predictors of important outcomes here they pursued studies from the opposite perspective while they examined Perception of politics (Ferris and Kacmar, 1992; Kacmar , Ferris, 1991). Thus research has demonstrated the independent influences of politics, distributive justice, on turnover intention, job satisfaction etc (Cropanzano et.al 1992; Mcfarlin and Sweeney, 1992). Very few studies attempted in finding out how these elements of fairness influence each other in predicting outcomes. In the current study, the mediating effect of perception of politics between distributive justice and turnover intentions has been examined. This study extends the previous research efforts and fills a gap in the reviewed literature by simultaneously investigating the mediation effect of perception of politics between distributive justice and turnover intention of employees in Information technology organizations. 343 employees from the top 10 IT organization as listed by NAASCOM were involved in the present study. The purposive sampling technique was adopted. Employees with minimum 2 years of experience in the organization was chosen as respondents. The major objectives of the study are, to measure employees perception of politics and employees perception of distributive justice; to study the turnover intention of IT employees; to find if perception of politics mediates the relationship between distributive justice and turnover intentions; to find out the significant effect of distributive justice on the dimensions of perception of politics and finally to find out the difference in perception of politics and distributive justice across demographics. Hypothesis was framed in accordance to the objectives stated. The tools of measurement adopted were (i) Perception of organisational politics were measured with the fifteen item Perception of politics scale (POPS), developed by Kacmar and Carlson (1997).( ii) Five item Perceptions of distributive justice were measured with the Distributive Justice Index, developed by Price and Mueller (1986). (iii) Turnover intention was measured using a categorical item developed by Dilys Robinson, Sarah Perryman, and Sue Hayday, (2004). The Crobachs alpha for perception of politics dimensions and distributive justice were above 0.90. The level of perception of politics and distributive justice was found to be moderate. In terms of the logistic regression analysis performed, it was found that there was partial mediation of perception of politics between distributive justice and turnover intention. The result indicated that, even though the employees perceived their work environment to be political, they will have the intention to stay back, as long as the fairness in distribution of rewards exists. Perception of politics which always carried a negative label showed partial mediation in the relationship between distributive justice and turnover intentions, where it explained only 13.9% of the intention to leave factor. This means, even when the environment is political, employees will stay back in the organization when they experience fairness in distribution of rewards. Keywords: Information technology, Organizational behaviour, Human resource management, Perception of politics, Mediation, Distributive justice, Turnover intention. -
Labour migration, the Arabian Gulf, and the expanding territorial imagination in Malayalam cinema
Mainstream Malayalam cinema of the south Indian state of Kerala has, for the most part, attempted to sidestep the significance of Gulf migration to the regions development. Part of the reason for this historical neglect has been the prevalence of a particular hegemonic vantage point within the films that has centralized the narratives of the landed elites in Kerala, eliding the various historically marginalized communities within the state. This article engages with a recent development within the film industry. It examines how Gulf migration has shaped the affective dimensions and expanding territorial imagination of the New Malayalam Cinema, which has positioned labour migration as one of its central thematic concerns. It is argued that this shift was made possible by the displacement of the universalized territorial imagination of the landed elites in the state that dominated its film industry for most of its history. Subsequently, this article will closely study how director Zakariya places his debut film Sudani from Nigeria (2018) within this new cinematic category, and will demonstrate how he portrays the region of rural Malappuram in north Kerala as a nexus of various migrant experiences, crucially invoking an underlying older order of cosmopolitanism prevalent in the region, fuelled partly by the history of Gulf migration and partly by a tradition and history of migration and transnationalism that predates the formation of the Indian state. The Author(s) 2023. -
Investigating structure and spectral energy distribution of galaxies using UVIT and multi-wavelength archival data
Observational astronomy and studies of galaxy formation and evolution made dramatic advances in the past few years. This thesis deals with the multi-wavelength investigation of the different aspects of galaxy formation and evolution. The work focuses on the star formation properties of late-type spiral galaxy NGC 2336, and the properties of unresolved galaxies and of resolved early-type galaxies using spectral energy distribution (SED) fitting method. The first part of this thesis deals with the studies on the characteristics of in orbit performance of the Ultraviolet Imaging Telescope (UVIT) on-board AstroSat . AstroSat is the first Indian multi-wavelength mission and was launched on 28 September 2015 into a low Earth orbit. The UVIT instrument on AstroSat provides a unique opportunity to study the ultraviolet (UV) sky simultaneously in three channels, covering the wavelength range 1300–1800 Å (FUV), 1800–3000 Å (NUV) and 3200–5300 Å (VIS). Characterizing the in-flight properties of the instrument is a prerequisite to obtain scientifically accurate and self consistent results from the scientific programs running on it. -
Admissibility of DNA Profiling Evidence in Criminal Trials in In India : A Comparative Study with Specific Reference to Legal Systems of United States of America and England
The use of Forensic technique of DNA profiling now constitutes a standard element of the system of Law Enforcement, and the findings of DNA testing are often acceptable in the proceedings of Legal cases. Despite newlinethe fact that they first relied on Expert Testimony based on DNA Evidence, the Courts in India have come to acknowledge DNA Evidence as both a fact that is significant to the case as well as proof that is conclusive. On the other hand, the scope of guilt that is capable of being concluded from a seeming match between samples is a topic of on-going debate. In most cases, it will newlinemerely be capable to locate the position of a suspect in relation to the site of the Crime. The uncritical acceptance of this Forensic Evidence as the objective answer to the challenge of determining the identity of a criminal raises the potential for scientific appropriation of the Criminal Justice system. newlineIn the vast majority of contested Legal proceedings involving Criminal offenses, the issue at hand is not one of identification but rather one of Intent or Mens-Rea, and DNA Evidence is irrelevant in this regard. Additionally, it is imperative to create a Regulatory framework which controls how the newlineForensic technique of DNA Profiling is used and applied with the objective to ensure its methodical and organized implementation. In light of this, it is very important to make rules about DNA Profiling that will only allow it to be used for Legal investigations. In an effort to regulate DNA profiling in the newlinecountry, the DNA Technology (Use and Application) Regulation Bill 2019 has been proposed. The emphasis of this study, is the particular difficulties experienced by the Indian Judicial system as a consequence of introducing this novel Forensic technique into the Criminal Proceedings, and the research aims to examine the evolution and use of DNA profiling in India. -
Intrusion into the right to freedom of speech and expression: A study on the state of journalism in the backdrop of attacks against journalists /
Journalists have been under life threats due to the nature of work they undertake for quite some time now. As many as 60 journalists were killed in instances of intolerance by specific groups in 2014. 2015 witnessed a different form of crime against journalists, unlike the earlier singular instances of attacks on one or two journalists; the Charlie Hebdo shootout was an organized crime on the whole of a political satire magazine (AFP, "Paris attacks) Charlie Hebdo team struggles to heal after massacre. -
Employee development and training as a tool for improving employee performance in an organization /
Patent Number: 202241025596, Applicant: Dr. Rekha N Patil.
Employee development and training as a tool for improving employee performance in an organization Abstract: A company's long-term success depends on how well its employees are trained and how well they are taught new things. Workers can use these programmes to improve their skills, but businesses can use them to improve employee productivity and the company's culture at the same time. The 2020 Work Institute found that cutting down on employee turnover has a big impact on a company's bottom line. -
Medical plugs to track health using artificial intelligence and IOT /
Patent Number: 341063-001, Applicant: Dr. T Padmapriya. -
Development of Optical and Electrochemical Sensor for Environmental Pollutants
Carbon nanocomposites have garnered much attention among various nanomaterials newlineowing to their well-defined characteristics, such as large surface area, biocompatibility, newlineand concise synthetic routes. They are also a viable contender for fluorescence and newlineelectrochemical applications, notably sensing, due to their intriguing photoluminescence and electrochemical features. Fluorescence and Electrochemical sensors for environmental pollutants are constructed using carbon quantum dots with different surface functionalization (functionalized with boric acid, organic dyes, polymer composite, and 2-aminothiazole). The developed sensor was considered as potential material for detecting heavy metal ions and organic pollutants. Surface morphology was analyzed using Transmission electron microscopy (TEM), an X-ray diffraction pattern (XRD), Raman spectra, X-Ray Photoelectron spectroscopy newline(XPS), Optical Profilometry, and Fourier Transform Infrared Spectroscopy (FTIR) newlinestudies. UV-Visible and photoluminescence spectroscopy reveals the absorption, newlineemission, and excitation spectra for the synthesized sensor with and without the addition of analytes. In electrochemical investigations, Nyquist plots showed that the modified working electrodes had the lowest charge transfer resistance when compared to other working electrodes. The effect of pH, ionic strength, long-term storage ability, and quantum yield were optimized for the fabricated fluorescence sensor. For the newlineelectrochemical sensor, the influence of the scan rate and the appropriate thickness of newlinethe electrodeposited film was carefully examined in order to achieve the highest current responsiveness and potential window. Quantification of the analytes was performed newlineusing Forster resonance energy transfer (FRET), Differential Pulse Voltammetry (DPV), newlineand the square wave voltammetry technique (SWV). The designed sensor was used to newlinecarry out analytical corroboration for the real samples.