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Experimental and Theoretical Approach of Evaluating Chitosan Ferulic Acid Amide as an Effective Corrosion Inhibitor
Phenolic acid grafted chitosan has widespread drug delivery applications, as bio adsorbent, packing material, etc., due to its excellent antioxidant and antimicrobial properties. However, for the first time, the anticorrosive efficiency of ferulic acid modified chitosan has been investigated. The prepared chitosan derivative is characterized using spectral methods, thermal analytical methods, surface charge, and particle size analysis. The evaluation of corrosion inhibition potential showed a highest value of 95.96% at 303K. Thermodynamic activation and adsorption parameters endorse a mixed adsorption process involving an initial electrostatic interaction followed by chemisorption. Electrochemical studies gave results which agreed well with the gravimetric studies. Surface morphological studies were performed using contact angle measurements, FESEM, EDAX, AFM, optical profilometric and UV spectral techniques. Computational studies involving quantum chemical calculations, Monte Carlo and molecular dynamic simulation studies, and radial distribution function analysis are further done to validate the experimental results. Graphical Abstract: [Figure not available: see fulltext.] 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG. -
Experimental and finite element studies on the mechanical properties of high-strength concrete using natural zeolite and additives
Addressing high carbon footprints is a critical global problem in cement production. Using environmentally friendly materials has proven to be a solution to environmental challenges. In this study, High-Strength Concrete of M60 is produced with Natural Zeolite and industrial waste materials. The combinations of 5 % zeolite and varying percentages of industrial wastes such as Silica Fume, Metakaolin, and Fly Ash are tested for mechanical properties. The laboratory test data is compared with numerical simulations to assess the accuracy and determine the error percentage for concrete strength predictions. The process involves the development of numerical solutions by ANSYS to predict strength. The developed numerical solution determines the accuracy of identifying the difference between the experimental and numerical data. The present research on the comparison of experimental and numerical data by ANSYS showed the lowest error percentage, which is acceptable for all the strength properties of concrete. 2024 -
Experimental and finite element analysis of thermal stress on thermal spray coated AISI 304 stainless steel specimen using low cost solid lubricant
The scope of this work is to investigate the thermal stress on the CaF2 coated AISI 304 stainless steel substrate using both finite element analysis and experimental method. The influence of temperature and coating thickness on the thermal stress was investigated by conducting the test at different temperatures ranging from 100C to 1000C and by varying the coating thickness at 250, 350 and 450m. Stoneys equation was then used to investigate the thermal stress analytically and the finite element analysis results were then compared with the analytical results. From the experimental results it was found that the specimen coated with 450m coating thickness has better resistance to thermal stress compared to other samples taken for investigation. The experimental results were then validated to confirm the effectiveness of the coating thickness by conducting a confirmation test using thermal shock test to validate the results experimentally. The samples after the thermal shock test were examined using SEM, revealing numerous cracks, voids and peel off of the coating as the major reason for higher thermal stress on samples coated with 250 and 350m. The Author(s), under exclusive licence to Springer-Verlag France SAS, part of Springer Nature 2023. -
Experimental and Analytical Study of High-Strength Concrete Containing Natural Zeolite and Additives
The study compares the durability of Natural Zeolite with Metakaolin, Silica Fume, and Fly Ash on high-strength concrete. 300 concrete specimens were tested for compressive strength before and after an acid attack, modulus of elasticity, water absorption, and rapid chloride permeability. 5%, 10%, and 15% of the cement were replaced with cementitious elements while maintaining the same quantity of Natural Zeolite. In this investigation, the water-cement ratio was maintained at 0.35. After 28 days, the specimens were tested for durability. Samples of all mixes were TG/DT and FTIR tested. The optimal percentages of cementitious materials that resulted to the maximum durability enhancements were reported as the study results. Experimental results showed that Natural Zeolite and Metakaolin strengthened the durability of concrete. All the data show that 5% Natural Zeolite with 10% Metakaolin performs well. Good R2 values and appropriate independent variable coefficients suggested that the regression findings for high-strength concrete durability were accurate. The P values of all models were less than 0.005 and the F values were statistically significant and appropriate; therefore, the generated models predict concrete's strength with authenticity. 2022 by the authors. Licensee C.E.J, Tehran, Iran. -
Experimental analysis of biofuel produced from fat derivatives of bird and animal as an additive fuel in CI engine
In the present work, an alternative form of biofuel for the Compression Ignition (CI) Engine is generated from inedible disposable chicken skin and pig tallow. The collected resources are heated up to 80C to extract fat and subjected to a trans-esterification process to obtain biofuel. The process resulted in 730ml and 950ml of high viscous biofuel from 1000ml of fat from waste chicken skin (WCS) and pig tallow (PT) respectively. The pure biofuels from WCS and PT have 38.07% and 41.68% higher viscous than diesel. The obtained biofuel is blended with diesel at 10, 20, and 30% by volume. The thermal, physical, and chemical properties of blended fuel are determined and found closer to the diesel properties. The engine tests indicate that the brake power of the B30 blend was decreased by 15.78% while the B10 combination produces 11.02% less power as compared to diesel at full load. The efficiency was reduced by 22.15, 7.59 % for B30, and B10 respectively at full load condition. About 3.9% and 34% of reduction in NOx, 22.5%, 27.5% of reduction in HC emission were recorded for respective blends at the same operating condition. This paper emphasizes on deriving value-added products from waste resources and its effective utilization. The findings from work indicate that the derived biofuel could be used in combination with diesel for the adequate partial replacement of diesel in CI engines without any significant alterations. 2020 International Journal of Renewable Energy Research. -
Experimental analysis and RSM-based optimization of friction stir welding joints made of the alloys AA6101 and C11000
In the present study, the evaluation of FSW input parameters on output response ultimate tensile strength (UTS) of the friction stir welded AA6101-C11000 joint is in agreement. The response surface methodology (RSM) was adapted for generating the mathematical regression equation to predict the UTS and to develop the FSW parameters to attain the highest UTS of the FSW joints. The central composite design (CCD) method from RSM with five levels and three factors, i.e., tool rotational speed, feed rate, and tool offset used to conduct and minimize the number of tests. During FSW, base sheet cu (hard metal) was stationed on the advancing side (+1 mm, +1.68 mm tool offset) and the base sheet Al (soft metal) on the retreating side (?1 mm, ?1.68 mm tool offset). The radiography studies were accomplished to inspect the internal flaws of the FSW joints (Al-Cu).The XRD and SEM investigation of the ruptured specimens during the tensile test to evaluate the IMCs phase anatomy and fracture analysis. The maximum UTS value measured during the experimental work was 142.69 MPa at 1000 rpm, 40 mm min?1, and ?1.68 mm tool offset. The highest joint efficiency obtained was 82% compared with the AA6101 UTS value. RSM adapted for this work was 92% accurate and satisfactory. 2023 The Author(s). Published by IOP Publishing Ltd. -
Experiment investigations of effect of laminate thickness on flexural properties of GLARE and GFRP laminates
The study focuses on the fabrication of Glass Fiber Reinforced Aluminum (GLARE) laminates and evaluation of their flexural properties. Aluminum 2024 (T3) sheets were used for the fabrication of GLARE laminates along with E-glass fiber in the form of chopped strand mat and epoxy resin. Different thickness of aluminum sheets ranging from 0.2 mm to 3.5 mm was used to fabricate the GLARE laminates. Hand layup technique is used to bond together aluminum sheets and epoxy/E-glass fiber laminates under different configurations. The test specimens were prepared as per ASTM standards, and standard three-point bending test was carried out to evaluate different bending characteristics. An increase of 60% in load-bearing capacity was observed when aluminum sheet thickness was an increase from 0.2 mm to 0.35 mm. Similar The results were compared with similar glass fiber reinforced plastic (GFRP) laminates to analyze improvements, whereas, the maximum deflection of the laminate decreased. There were not many improvements in case of bending strength and bending modulus when aluminum sheet thickness was varied. Fracture surface analysis indicated three modes of failure namely, interfacial delamination, delamination bonding, and fiber breakage. When compared with glass fiber reinforced plastics of similar configuration, a substantial increase in bending strength was observed. 2018 IOP Publishing Ltd. -
EXPERIENTIAL TOURISM: Nature-based Tourism Trends in India
The rise of experiential tourism in recent years is seemingly gaining momentum. Tourism providers are marketing immersive travel experiences by engaging visitors with the destinations history, residents, and environment. Experience tourism entails immersing oneself in the essence of the destination in its truest sense. Authenticity involving emotions and values is of great importance for tourism marketing. Experiential travel rejects the idea of the traditional visitor experiences and gets back to the roots of travel. Over the last decade, nature-based tourism has become a widespread phenomenon and contributes more than US$120 billion to global GDP. The recent pandemic has additionally stimulated the demand for spending time and nature. Thus, experiential nature-based tourism could play an important role in the sustainable recovery of global tourism. This chapter discusses Indias critical experiential tourism trends through the marketing perspective and provides innovative marketing solutions for nature-based experiential tourism planning and development. Extensive and comprehensive literature has been used in this study to identify and critically reflect on vital nature-based experiences worldwide and the recent trends in the market. 2023 Taylor and Francis. -
Experiences of Students with Learning Disabilities in Higher Education: A Scoping Review
Background: As the number of students with learning disabilities (SwLD) entering higher education (HE) increases, a need arises to improve the services provided to them by understanding their experiences. This scoping review explores the extent and type of evidence on the experiences of SwLD in HE. Method: The review followed the six stages outlined by Arksey and OMalley. PubMed, Science Direct, EBSCO, ProQuest, and APA PsycNet were searched for primary data, and studies published between January 2012 and July 2022 were included. The following information was extracted and collated from the included studies: author/s, year, location, objective/aim, study design, materials and methods, and major findings. Results: The search yielded 3729 titles and abstracts. Their screening resulted in 26 eligible articles. The review of these articles identified three major themes: (a) academic concerns, (b) psychosocial experiences, and (c) support systems and accommodations. The academic concerns included difficulties in areas such as reading, writing, and spelling. The studies on psychosocial experiences showed that SwLD experience stress, anxiety, and lower self-esteem. The studies on support systems and accommodations indicate that they get academic support, technological support, and extra time for examinations from educational institutions. Conclusion: The SwLD experiences academic and psychosocial challenges during higher studies. However, the existing support systems do not address these challenges, and there is a need for further research in this area. 2023 The Author(s). -
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Experiences of raising children with autism :
The purpose of the study was to address the gap in the literature related to fathers role and experiences in raising boys with autism in the Indian context. Though the study has tried to homogenise the sample to the best possible extent it does not aim to generalise the results; rather it seeks newlineto get an insight into some facets of the fathers experiences. A qualitative phenomenological approach was used for this study which addressed the three research questions: 1) What are the experiences of fathers before and after the diagnosis of autism? 2) What are the challenges that fathers experience as they raise their child with autism? 3) What are the personal changes that fathers go through as they raise their child with autism? Tied together these research questions sketches the journey travelled by the fathers and gave a sweeping picture of their overall newlineexperiences as fathers of children with autism. The study has mapped and constructed the passage of thirteen fathers of children with autism aged between six to 11 through a one on one interview. All the ethical newlineconsiderations have been followed. The participants were able to provide a rich and detailed account of their experiences of bringing up a child with autism. The analysis was done using Interpretative Phenomenologic alAnalysis. newlineSix major themes emerged from the study. They are 1) Making sense of early warning signs 2) The impact of diagnosis 3) Negotiating the social world 4) Accepting and accommodating autism 5) Personal transformations 6) Bonding with the child. One of the earliest behaviours noticed by all the fathers was a delay in speech. None of the fathers resisted going for a diagnosis. In fact, once they found that something was different in their child, they relentlessly pursued the reason for it. -
Experiences of mindfulness-based relapse prevention on the smoking behaviour of working women
Smoking is the highest cause of preventable deaths in the world. The number of working women prone to addiction is high due to the levels of stress witnessed. The number of working women who have taken up to smoking has increased and is said to increase by 20 percent by the year 2025 if not addressed. Mindfulness, a Buddhist meditative technique helps with managing addiction to nicotine. Mindfulness based relapse prevention has showed promise to reduce relapse levels amongst people who smoke. The primary objective of the study is to check the experiences of mindfulnessbased relapse prevention (MBRP) on the smoking behaviour of working women in India. An embedded experimental design was carried out on eight working women who were selected using purposeful sampling. The participants went through eight two- hourly sessions of MBRP therapy, one session a week. Three sets of interviews (pre-intervention, mid intervention and post-intervention) were conducted including pre and post-test to check the levels of abstinence self-efficacy, mindfulness, perceived stress and craving. Follow up was carried out one week, one, two and six months post intervention. Thematic analysis was used for interpretation of qualitative data and paired sample t test was used for analysis of quantitative data. Themes that emerged were experiences with the habit of smoking, which included history of newlineinitiation, reasons for smoking, transformation seen and history of quit attempts. Four weeks into the intervention the themes that emerged were impactful components within self, supporting outcomes of practice and challenging experiences. Post the intervention experiencing changes, experiencing challenges through the intervention and strategies for abstinence and continued practice emerged. Mindfulness and abstinence self-efficacy had risen whereas craving and stress had reduced. Follow up at one week showed no changes in results. One and two months follow up showed newlinereduced practice hours of mindfulness with no full-blown relapse. -
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Experience of Resilience in Women with Breast Cancer : Implication for Resilience-Based Intervention
Breast cancer is prevalent among Indian women and affects their physical, emotional, and social well-being. Resilience in breast cancer refers to the ability to maintain newlinepositivity and adapt to challenges. However, evidence-based studies and theoretical newlineframework interventions on resilience in the Indian context are lacking. The current newlinestudy aims to explore the subjective experience of resilience and intend to provide resilience-based intervention in Indian women with breast cancer. The study also explores sociodemographic, clinical outcomes, relation with resilience, quality of life and posttraumatic growth in the Indian context. The study uses a qualitative approach with phenomenological paradigm to understand the patterns, processes and outcomes in exploring the concept of resilience. Purposive sample of 33 participants from two hospitals in Bengaluru, India were recruited. The participants consisted of 21 breast cancer survivors on follow-up, four on anti-cancer therapy and eight family members of breast cancer survivors for triangulation. Along with sociodemographic, clinical details, and the Connor-Davidson Resilience Scale (2003) to screen for categorising the resilience levels was collected. The in-depth interview guide was validated with experts to collect data. The interviews were tape-recorded, transcribed, and subjected to member checks, triangulation, intercoder reliability, and thick description to ensure the validity of the findings. The data was analysed using reflective thematic analysis by Braun and Clarke (2019). The finding describes four themes of experience of resilience in women with breast cancer. (1) Cancer diagnosis is a life-changing experience. Breast cancer diagnosis and therapy causes existential crisis, psychological distress, and social stigma. (2) Restoring healthy perception in an adverse event. Navigating challenges and achieving a balance between internal and newlineexternal factors. (3) Types of support-the pathway to resilience. -
Experience of psychic restructuring among refugees in the context of life in refuge
Changes in the inner voice, thoughts, and feelings due to the recurrent experiences in social and cultural reality are defined as psychic restructuring (PR). Any collective trauma can drastically change a persons psyche in multiple ways. The first argument of the study is that PR happens in individuals as a result of exile, which has manifold reasons. The second argument is that first-generation older adults crave for their homeland more intensely because of their subtle memories of the left behind. The third argument is that there are metaphorical representations of exilic experiences in the art forms that would depict their inexplicable quest for PR. Finally, it suggests the possibility of constructive PR in refugees with the aid of clinically driven and standardized art-based therapies (ABT). These arguments have multicollinearity in the context of PR, which still needs to be studied. The study tries to bridge the gap or lacuna in this research arena. 2023 The Association for Psychoanalytic Psychotherapy in the Public Sector. -
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Experience and Agency of Children with Intellectual Disabilities in Schools : An Ethnographic Study in Haryana, India
India currently has more than 24 million children within the age group of 0-18 years experiencing some form of disability. Among them, India has the highest population of children at risk of developmental disabilities (UNICEF, 2011). However, there is a significant dearth of knowledge regarding their lived experiences. Surprisingly, qualitative understandings of the lives of children with intellectual disabilities within their school environments are lacking in India. Thus, this research aims to fill this gap by focusing on comprehending the lived experiences and agency of these children within their schools, families, and neighborhoods. Recognizing them as social agents has the potential to challenge the marginalized status often attributed to them. The objective of this research was to understand the lived experiences of children with intellectual disabilities across various school setups, including government schools, private schools, and mainstream schools. Furthermore, it seeks to understand the values and perspectives of the schools, school authorities and teachers, and the manner in which children with intellectual disabilities employ their agency in their day- to-day lives within different educational structures. Ethnographic research was, therefore, conducted in four government schools, two private schools and two special schools in Karnal district, Haryana, India. Haryana was chosen due to the existence of previous research on the cultural understanding of disability in the state. A total of 25 children with intellectual disabilities and 44 school teachers were interviewed and observed. Classroom observations and shadowing also served as important methods of data collection. The findings reveal that policies, school structures and processes, as well as teachers' practices and attitudes, continue to perpetuate exclusionary practices for children with intellectual disabilities. The notion of "inclusive schooling" remains superficial within the Indian context. However, within these exclusionary systems and processes, a diverse range of differences were noted in terms of the experiences, beliefs, and preferences of children. These differences are influenced by a complex interplay of their social environment (school and home), cultural norms and personal attributes. Academic aspirations and experiences of personal friendship emerged as dynamic and intricate aspects of their lives. Evaluating these elements presents challenges as children's academic achievements and friendships are continually evolving, forming, and dissolving. Data analysis also demonstrates that children with intellectual disabilities not only actively construct meanings but also possess an awareness of the cultural context in which they exist. Their interactions with others, including the researcher, were heavily influenced by these cultural contexts. Their actions contribute differently to social and relational networks, depending on the barriers they encounter within each institution. The performativity of their agency was explored through an understanding of their "silences," which proved to be an essential element in analyzing their agency.Additionally, their agency was examined through their utilization of digital technologies which was actively used by children to maintain friendships with old friends, to develop new friendships and for entertainment purposes. This research, therefore, aims to integrate the notions of agency, culture, and structure in order to gain a comprehensive understanding of the experiences of children with intellectual disabilities in various educational environments in an Indian state. -
Expatriate perceptions towards commitment based HR practices: impact on job retention in Indian IT industry /
International Journal Of Management And Development Studies, Vol.6, Issue 8, pp.29-45, ISSN: 2320-0685 (Online) 23211423 (Print).