International Journal of Experimental Research and Review最新文献

{"title":"Zooplankton Bio-indicators Against Changing Hydrological Parameters at Bidyadhari River of Indian Sundarbans","authors":"Arpan Chakrabarti, Koutilya Bhattacharjee, Neelakshi Sarkar, Samir Kumar Saha","doi":"10.52756/ijerr.2024.v37spl.003","DOIUrl":"https://doi.org/10.52756/ijerr.2024.v37spl.003","url":null,"abstract":"Sundarban Estuarine System is influenced by periodic tidal input and fresh water inflow. It is surrounded by world’s largest mangrove ecosystem and harbour naturally grown fishery. The total system is intersected by a network of many rivers and creeks. Bidyadhari is one of the major rivers of Sundarbans that is surrounded by human habitation on both banks. The dynamic condition of the river due to tidal inflow and fresh water input which is further increased many folds due to human interventions. In the present study, 26 zooplankton taxa have been recorded where 16 taxa were found perennial in all three seasons. 19 species showed its highest density in the monsoon season, 4 in post-monsoon and 3 in pre-monsoon season. Considering all seasons, Pseudodiaptomus serricaudatus was found to be the most abundant species in monsoon when there was  a marked increase in temperature, nitrate, phosphate, silicate and a decrease in salinity, DO, TDS, EC and chlorophyll-a concentration. On the other hand,  Acrocalanus longicornis was most abundant during the post-monsoon season when pH, EC, DO, chlorophyll-a were found to be highest and temperature was lowest of all seasons. Only 3 of the 26 taxa were found in highest concentration during pre-monsoon season when salinity was found in highest concentration. The Shannon-Weiner Diversity Index, Simpson 1_D Index and Margalef Richness Index of zooplankton diversity were found highest in station 3  (nearest to the sea) during all the three seasons. Pearson Correlation Analysis showed some significant correlation between different hydrological parameters and zooplankton diversity indices. The result of the study indicates the presence of organic pollutants and eutrophication in Bidyadhari river that demands regular monitoring of water quality for maintenance of long-term sustainability of one the largest naturally grown fisheries in the world.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"11 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the Influence of Arbuscular Mycorrhizal Symbology on the Antioxidant Potential of Liverwort Asterella multiflora: A Comprehensive Study on Rhizoid and Thallus Anatomy","authors":"Mamta Verma, Shabnam, Sandeep Kotwal, Anupam Kumar","doi":"10.52756/ijerr.2024.v37spl.009","DOIUrl":"https://doi.org/10.52756/ijerr.2024.v37spl.009","url":null,"abstract":"Arbuscular mycorrhizal (AM) symbiosis is a vital ecological interaction between plants and fungi that enhances nutrient uptake and plant resilience. While extensively studied in vascular plants, AM symbiosis in liverworts remains relatively unexplored. Six populations of Asterella multiflora were collected throughout the year to scan for arbuscular mycorrhizal colonization and enzymatic antioxidant activity. Percent mycorrhizal colonization was measured in smooth as well as tuberculated rhizoids. Anatomical detail of the thallus was also observed. Arbuscules were observed in the cells of the storage zone of the thallus. Enzymatic antioxidant activities, i.e., superoxide dismutase (SOD), guaiacol peroxidase (GPOX), catalase (CAT), ascorbate peroxidase activity (APOX) and glutathione reductase activity (GR) were calculated. Maximum enzyme activity was observed in ascorbate peroxidase, which calculated 1.92-2.09 UA/mg protein, while catalase showed minimum activity of 0.01 UA/mg protein. A positive correlation was observed between enzyme activities and percent mycorrhizal colonization. This study delves into AM symbiosis in liverworts, focusing on Asterella multiflora and investigates the impact of AM colonization on enzymatic antioxidant activities, i.e., superoxide dismutase (SOD), guaiacol peroxidase (GPOX), catalase (CAT) ascorbate peroxidase activity (APOX) and glutathione reductase activity (GR). Antioxidants play a crucial role in stress tolerance and plant health, making them central to understanding the implications of symbiotic relationships.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"12 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Annular Beam Driven Metamaterial Backward Wave Oscillator","authors":"Jyoti Vengurlekar, Ayush Saxena","doi":"10.52756/ijerr.2024.v37spl.011","DOIUrl":"https://doi.org/10.52756/ijerr.2024.v37spl.011","url":null,"abstract":"Metamaterials (MTMs) are synthetic materials designed to have characteristics that \"may not be readily available in nature,\" such as negative permittivity, reversed Doppler Effect, reversed Cherenkov Effect, and negative Refractive Index. These characteristics have motivated researchers to analyze and investigate the use of MTMs for modelling high-power microwave (HPM) radiation sources. One of the most potential HPM sources is an annular beam-driven Backward-Wave Oscillator (BWO) based on the Cerenkov mechanism. The devices that use the Cerenkov mechanism are preferred due to their larger bandwidth. Its high output power and repetition operations make it a promising source. In this paper, an annular beam-loaded metamaterial BWO is simulated in order to investigate and comment on the possibility of metamaterial or metamaterial-inspired structures replacing the slow-wave structures (SWSs) in vacuum tube devices. Performance parameters of several BWO configurations loaded with different metamaterial-inspired conductor rings are compared to rippled SWS-based BWOs. The results suggest that fewer metamaterial rings with solid cross-section (CS) inside the BWO lead to a closer match in generated output power and frequency with the output power generated using a rippled SWS.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"59 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140362823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Borreria hispida Extract on SIRT1, HIF-1α, ET-1 and VEGFR-2 Gene Expression in NRK-52E Cells Subjected to Glucotoxicity","authors":"D. Markandeyan, Shiek S.S.J. Ahmed, Palani Perumal, Arulvasu Chinnasamy, Bhavatarini Govindaraj, Niranjni Sekar, Sudhan Mookandi, Priyadarshini Shanmugam, Janakiraman Velayudam, D. Padmanaban, Jayaraman Perumal","doi":"10.52756/ijerr.2024.v37spl.010","DOIUrl":"https://doi.org/10.52756/ijerr.2024.v37spl.010","url":null,"abstract":"This study aimed to investigate the impact of Borreria hispida extract on gene expression in NRK-52E cells under conditions of glucotoxicity. Gene expression analysis was conducted using RT-PCR following the exposure of cultured NRK-52E cells to glucotoxic conditions and varying concentrations of Borreria hispida extract. The results demonstrated a dose-dependent increase in SIRT1 gene expression and a concomitant decrease in HIF-1λ, ET-1, and VEGFR-2 gene expressions upon treatment with Borreria hispida extract. Additionally, molecular docking studies suggested the potential inhibition of Rho-kinase as a mechanistic explanation for these effects. Borreria hispida extract may confer renoprotective benefits against glucotoxicity-induced cellular damage. The potential therapeutic utility of Borreria hispida extracts in managing renal complications associated with conditions such as diabetes. Furthermore, our docking studies shed light on the potential molecular mechanisms underlying the observed effects, suggesting interactions between phytochemicals present in Borreria hispida extract and the JNK-1 protein. These interactions may contribute to the augmentation of SIRT1 activity, further bolstering the extract's therapeutic utility in DKD. ","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"42 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140363471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recurrent Pregnancy Loss Associated Cytogenetic and Genetic Anomalies – Study from Eastern India","authors":"Koutilya Bhattacharjee, Suman Pal, Emili Banerjee, Shiuli Mukherjee","doi":"10.52756/ijerr.2024.v37spl.007","DOIUrl":"https://doi.org/10.52756/ijerr.2024.v37spl.007","url":null,"abstract":"Recurrent early pregnancy loss (REPL) refers to loss (2 or more) of pregnancy within the first trimester of the gestation period. Reports of REPL cases are significantly increasing along with idiopathic or enigmatic REPL because associated clinical parameters in such cases remain within normal range and diagnosis remains odyssey. Genetic factors like single nucleotide variations (SNV) and altered heterochromatin and/or satellite content, as chromosomal aberrations like translocation, deletion and inversions have reportedly remained associated with many diseases. The present study aimed to find any structural and single nucleotide variations associated with idiopathic REPL. Three thousand six hundred twelve (3612) couples with history of 2 or more pregnancy losses or neonatal death were subjected to clinical investigations, karyotype analyses and Whole Exome Sequence analyses as per requirement to identify the underlying cause(s). More than 14% of the idiopathic REPL cases were found to carry chromosomal heteromorphisms. Among these, 9qh+ was predominant, followed by 21ps+, 15ps+, 14ps+ and others. Heteromorphies were significantly higher in females than males except for 14ps+. Along with some single nucleotide variations were also found among the subjects, though compound heterozygosity or allelic homozygosity were major causal factors. Idiopathic REPL cases were found to carry genetic variations, as per the present study, with a prevalence of more than 10% among RPL cases with yet unknown molecular mechanisms of damage. A further thorough study to unveil the underlying molecular pathology is strongly recommended.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"38 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140363887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Control Strategies for Enhancing Power Quality with Unified Power Quality Conditioner in a Solar-PV Integrated Utility System","authors":"Lenin Babu Chilakapati, T. G. Manohar","doi":"10.52756/ijerr.2023.v35spl.001","DOIUrl":"https://doi.org/10.52756/ijerr.2023.v35spl.001","url":null,"abstract":"The electrical utility systems are well-liked as local energy systems because of their capacity to incorporate renewable energy, enhance energy effectiveness and strengthen the resilience of the power system. These benefits do, however, come with specific complications regarding control and power quality (PQ). PQ within a utility system is paramount to ensure the appropriate operation of connected devices and the well-being of the overall system. As a result, both voltage quality & current quality are significant. Control strategies in conjunction with cutting-edge power electronics devices (PED) offer a solid framework to handle PQ challenges. Hence, this paper’s proposed work discusses the application of a Solar-Photovoltaic (PV) fed Unified Power Quality Conditioner (UPQC) for power quality enhancement towards the supply grid network. The Solar-PV fed UPQC enhances PQ and maximizes solar energy utilisation, leading to an eco-friendly and cost-effective solution while injecting clean, renewable energy into the grid. In this paper, the control strategies for UPQC are based primarily on the Adaptive Leaky Least Mean Square (AL_LMS) algorithm as compared with the Synchronous Reference Frame (SRF) based theory for switching of series and shunt active converters of UPQC. This AL_LMS approach extracts reference signals to switch UPQC’s shunt and series voltage source converters (VSCs) by iteratively updating the weights. Thus, the control strategy applied to Solar-PV fed UPQC mitigates voltage problems like voltage sag and swell, current harmonic distortions and other PQ issues. The work is done in MATLAB/ Simulation software and simulation outcomes show the effectiveness of Solar-PV fed UPQC in improving power quality by maintaining within the IEEE-519 Standards.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139208382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bilateral Teleoperation with a Shared Design of Master and Slave Devices for Robotic Excavators in Agricultural Applications","authors":"Ilham Amani Rozaini, Nurul Emylia Natasya Ahmad Zakey, Mohd Hairi Mohd Zaman, Mohd Faisal Ibrahim, S. M. Mustaza, Asraf Mohamed Moubark","doi":"10.52756/ijerr.2023.v35spl.011","DOIUrl":"https://doi.org/10.52756/ijerr.2023.v35spl.011","url":null,"abstract":"The main objective of this study is to develop a shared design of master and slave devices for bilateral teleoperation mechanisms used for robotic excavators in agricultural applications. In robot teleoperation research, many potential applications within controlled and hazardous environments come to light. Robots, with their capacity for remote control by human operators through master devices, often employ the master-slave teleoperation approach. This strategy finds frequent use across manufacturing, construction, and agriculture industries. The master-slave system necessitates two interdependent components that collaboratively steer the robot in real time. However, challenges arise when manipulating the robot arm proves challenging due to structural differences between the master device (such as a joystick) and the slave device (the robot arm). A stable operational framework must be established for the robot to function optimally. This teleoperation system employs a master device to govern the actions of the slave device, a dynamic that heavily influences the operational complexity. Hence, the focal point of this study is to enhance the master-slave algorithm for teleoperation applications that rely on controlling robot arm movements. Despite the differing dimensions of the master and slave devices, they both share a common structure. The kinematic model bridging these components must be intelligible to ensure user-friendliness, facilitating effortless robot control. Calculating the robot arm's end effector movement and positioning involves employing the forward kinematics of the arm, determined through Denavit-Hartenberg parameters and transformation matrices. By mitigating communication delays between the master and slave devices using a technique centered around the robot arm's end effector position, the effectiveness of teleoperation can be significantly improved. Our designed robot arm attains 80% to 100% precision across joints. In summary, streamlining the robot arm's structure and minimizing delays offers a route to bolstering both stability and efficiency in robotic movement.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139196778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Hybrid Approach for Complex Layout Detection of Newspapers in Gurumukhi Script Using Deep Learning","authors":"Atul Kumar, Gurpreet Singh Lehal","doi":"10.52756/ijerr.2023.v35spl.004","DOIUrl":"https://doi.org/10.52756/ijerr.2023.v35spl.004","url":null,"abstract":"Layout analysis is the crucial stage in the recognition system of newspapers. A good layout analysis results in better recognition results. In this paper, we detected the complex layout of newspapers in the Gurumukhi script. We have used a hybrid approach. In this approach, firstly, we proposed an algorithm to remove pictures from newspaper images that involves various image preprocessing tasks based on binarization, finding contours, and erosion on the image to remove the graphics from the image. This method also removes pictures from complex non-Manhattan layouts. Finally, we have trained the deep-leaning model based on a convolutional network to detect the columns of text from newspapers. We have created a dataset of 500 images labelled with five classes on which the model was trained. We have tested this method on the number of newspapers of the Gurumukhi script. The results show very good accuracy with this hybrid approach of layout detection.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"59 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139206840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Psycho-Social impact of Covid-2019 on Work-Life Balance of Health Care Workers in India:","authors":"Paramjeet Kaur, Gurminder Kaur Arora, Ankita Aggarwal","doi":"10.52756/ijerr.2023.v35spl.007","DOIUrl":"https://doi.org/10.52756/ijerr.2023.v35spl.007","url":null,"abstract":"Innumerable studies related to COVID-19 carried out across the globe have demonstrated that HCWs worked in stressful and difficult socio-economic environments and, therefore, had a disturbed work-life balance. However, negligible efforts have been made to analyze the factors that impacted it. In order to investigate this phenomenon, a cross-sectional study was undertaken utilizing data obtained directly from a sample of 799 healthcare workers (HCWs) employed in eight hospitals who were actively working throughout the period spanning from April 2020 to March 2022 within the COVID-19 pandemic. Five latent variables, namely, Psychological Stress (PS), Socio-Economic Impact (SEI), Interpersonal Relationships (IPRs), Government Intervention (GI) and Work-Life Balance (WLB), have been developed using a self-designed questionnaire with separate sections for each of them. A comprehensive structural model to determine the variables influencing WLB is estimated using PLS-SEM. The mediating role of IPR in the relationship between PS and WLB is investigated, and the moderating effect of two variables on WLB, 'Government intervention' and 'whether a worker is affected by COVID or not', has been examined. T-test and ANOVA techniques are also applied to examine the impact of these variables across different socio-demographic characteristics. Our findings indicate that variables PS and SEI negatively impact WLB whereas IPRs have positively impacted it. Government intervention, however, did not exhibit any significant impact on it. Further, IPRs partially mediated the relationship between PS and WLB. The role of government is completely non-significant in moderating the relationships of PS and SEI with WLB. A healthcare professional affected by COVID significantly moderated the mediating relationship between PS and IPR and the direct relationship between IPR and WLB. Subsequently, it favourably affected the WLB of HCWs. Our study recommends that the government and hospital authorities should strengthen the resilience-building interventions and expand their efforts to provide social support to HCWs at the hospital and community levels. Concerted actions must be taken to preserve HCWs' work-life balance amidst the challenging circumstances they face, especially during the pandemic.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139208292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Is CSR still optional for Luxury Brands, or can they afford to ignore it?","authors":"Saloni Gupta, Neha Bothra","doi":"10.52756/ijerr.2023.v35spl.016","DOIUrl":"https://doi.org/10.52756/ijerr.2023.v35spl.016","url":null,"abstract":"Can we learn survival and success in isolation? Can Luxury Companies afford to think of Corporate social responsibility (CSR) as an optional aspect? This paper discusses pioneering steps towards CSR in the context of the rapidly expanding luxury market. This further impels these brands to tradeoff between Profit-Planet, revisiting the initiatives and impediments pragmatically. The scholars have advocated the inspirational forces behind CSR contributions varying from the environment's need to strengthen goodwill to serve sustainability/existential crisis to institutional expectations. The stakeholders have augmented expectations from luxury brands towards society with each passing year in proportion to the revenue. This shift not only bags goodwill and promotes positive word-of-mouth in the industry but also enhances the brand's reputation. Luxury brands, often seen as symbols of opulence and exclusivity, are inherently expected to demonstrate social and environmental responsibility. Additionally, there is a growing awareness among consumers who seek brands that align with their values, making CSR a strategic imperative for luxury companies to maintain their brand reputation and customer loyalty. CSR is crucial for luxury companies, especially from a long-term sustainability and Sustainable Development Goals (SDGs) perspective. These market giants are at par with the SDG goals: SDG 1(No Poverty), SDG 3 (Good Health and Well-being), SDG 4 (Quality Education), SDG 8 (Decent work and economic growth), SDG 10 (Reducing inequalities), SDG 12(Responsible Consumption and Production), etc. In essence, CSR is not just a moral imperative for luxury companies, it is a strategic necessity that aligns their business objectives with the global agenda for sustainable development, ensuring long-term viability and relevance in a rapidly evolving world.","PeriodicalId":190842,"journal":{"name":"International Journal of Experimental Research and Review","volume":"45 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139203057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}