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Impact of Fin Arrangement on Heat Transfer and Melting Characteristics of Phase Change Material

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Journal of Thermal Science 2024年第2期33卷 435-456页

作者： Arun UNIYAL yogesh K.PRAJAPATI Department of Mechanical Engineering National Institute of Technology UttarakhandSrinagar(Garhwal)246174India Department of Mechanical Engineering BIT SindriDhanbadJharkhand828123India

Present work investigates the heat transfer and melting behaviour of phase change material(PCM) in six enclosures(enclosure-1 to 6) filled with paraffin *** enclosures are equipped with distinct arrangements of the fins while keeping the fin's surface area equal in each *** analysis has been presented to recognize the suitable fin arrangements that facilitate improved heat transfer and melting rate of the *** wall of the enclosure is maintained isothermal for the temperature values 335 K,350 K and 365 *** length of the enclosure including fins is ranging between 0 and *** have been illustrated through the estimation of important performance parameters such as energy absorbing capacity,melting rate,enhancement ratio,and Nusselt *** has been found that melting time(to melt 100% of the PCM) is 60.5%less in enclosure-2(with two fins of equal length) as compared to the enclosure-1,having no *** the fin surface area equal,if the longer fin is placed below the shorter fin(enclosure-3),melting time is further decreased by 14.1% as compared to ***,among all the configurations,enclosure-6 with wire-mesh fin structure exhibits minimum melting time which is 68.4% less as compared to the *** on the findings,it may be concluded that fins are the main driving agent in the enclosure to transfer the heat from heated wall to the *** design and positioning of the fins improve the heat transfer rate followed by melting of the PCM in the entire area of the *** of the favourable vortices and natural convection current in the enclosure accelerate the melting phenomenon and help to reduce charging time.

关键词： phase change material enclosure fin melting fraction energy storage heat transfer

Effectiveness of craniosacral therapy,Bowen therapy,static touch and standard exercise program on sleep quality in fibromyalgia syndrome:A randomized controlled trial

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Journal of Integrative Medicine 2024年第4期22卷 473-483页

作者： Reepa Avichal Ughreja Prem Venkatesan Dharmanand Balebail Gopalakrishna yogesh Preet Singh Vani Lakshmi R Department of Physiotherapy Manipal College of Health ProfessionsManipal Academy of Higher EducationManipal 576104KarnatakaIndia Department of Rheumatology Manipal HospitalBengaluru 560052KarnatakaIndia Department of Clinical Immunology and Rheumatology All India Institute of Medical SciencesBilaspur 174001Himachal PradeshIndia Department of Data Science Prasanna School of Public HealthManipal Academy of Higher EducationManipal 576104KarnatakaIndia

Background:Sleep disturbance is commonly seen in fibromyalgia syndrome (FMS);however,high quality studies involving manual therapies that target FMS-linked poor sleep quality are lacking for the Indian ***:Craniosacral therapy (CST),Bowen therapy and exercises have been found to influence the autonomic nervous system,which plays a crucial role in sleep *** the paucity of evidence concerning these effects in individuals with FMS,our study tests the effectiveness of CST,Bowen therapy and a standard exercise program against static touch (the manual placebo group) on sleep quality in ***,setting,participants and intervention:A placebo-controlled randomized trial was conducted on132 FMS participants with poor sleep at a hospital in *** participants were randomly allocated to one of the four study groups,including CST,Bowen therapy,standard exercise program,and a manual placebo control group that received static ***,Bowen therapy and static touch treatments were administered in once-weekly 45-minute sessions for 12 weeks;the standard exercise group received weekly supervised exercises for 6 weeks with home exercises until 12 *** 12 weeks,all study participants performed the standard exercises at home for another 12 *** outcome measures:Sleep quality,pressure pain threshold (PPT),quality of life and fibromyalgia impact,physical function,fatigue,pain catastrophizing,kinesiophobia,and positive–negative affect were recorded at baseline,and at weeks 12 and 24 of the ***:At the end of 12 weeks,the sleep quality improved significantly in the CST group (P=0.037) and Bowen therapy group (P=0.023),and the PPT improved significantly in the Bowen therapy group(P=0.002) and the standard exercise group (P<0.001),compared to the static touch *** improvements were maintained at 24 *** between-group differences were observed for other secondary ***:CST and Bowen therapy improv

关键词： Chronic pain Complementary therapies Exercise Fibromyalgia Musculoskeletal manipulations Sleep

Deep Learning-Based Mask Identification System Using ResNet Transfer Learning Architecture

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Computer Systems Science & Engineering 2024年第2期48卷 341-362页

作者： Arpit Jain Nageswara Rao Moparthi A.Swathi yogesh Kumar Sharma Nitin Mittal Ahmed Alhussen Zamil S.Alzamil MohdAnul Haq Department of Computer Science and Engineering KoneruLakshmaiah Education FoundationVaddeswaram522302India Department of Computer Science and Engineering Sreyas Institute of Engineering and TechnologyHyderabad500068India University Centre for Research and Development Chandigarh UniversityMohali140413India Department of Computer Engineering College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia Department of Computer Science College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia

Recently,the coronavirus disease 2019 has shown excellent attention in the global community regarding health and the *** Health Organization(WHO)and many others advised controlling Corona Virus Disease in *** limited treatment resources,medical resources,and unawareness of immunity is an essential horizon to *** all resources,wearing a mask is the primary non-pharmaceutical intervention to stop the spreading of the virus caused by Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2)*** countries made masks mandatory to prevent *** such enforcement,automatic and effective face detection systems are *** study presents a face mask identification approach for static photos and real-time movies that distinguishes between images with and without *** contribute to society,we worked on mask detection of an individual to adhere to the rule and provide awareness to the public or *** paper aims to get detection accuracy using transfer learning from Residual Neural Network 50(ResNet-50)architecture and works on detection *** experiment is tested with other popular pre-trained models such as Deep Convolutional Neural Networks(AlexNet),Residual Neural Networks(ResNet),and Visual Geometry Group Networks(VGG-Net)advanced *** proposed system generates an accuracy of 98.4%when modeled using Residual Neural Network 50(ResNet-50).Also,the precision and recall values are proved as better when compared to the existing *** outstanding work also can be used in video surveillance applications.

关键词： Transfer learning depth analysis convolutional neural networks(CNN) COVID-19

Endoscopic full-thickness plication along with argon plasma coagulation for treatment of proton pump inhibitor dependent gastroesophageal reflux disease

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World Journal of Gastrointestinal Endoscopy 2024年第5期16卷 250-258页

作者： yogesh Harwani Shreya Butala Balaji More Varun Shukla Anand Patel Department of Gastroenterology Nobel Gastro HospitalAhmedabad 408409GujaratIndia Department of Gastroenterology Sanjay Gandhi Post Graduate Institute of Medical SciencesLucknow 226014Uttar PradeshIndia Department of Pharmacology Mahatma Gandhi Medical College and Research InstitutePuducherry 607402PuducherryIndia Department of Gastroenterology Noble Institute of GastroenterologyAhmedabad 380009GujratIndia

BACKGROUND Most endoscopic anti-reflux interventions for gastroesophageal reflux disease(GERD)management are technically challenging to practice with inadequate data to support it ***,this study was carried to evaluate the effectiveness and safety newer endoscopic full-thickness fundoplication(EFTP)device along with Argon Plasma Coagulation to treat individuals with *** To evaluate the effectiveness and safety newer EFTP device along with Argon Plasma Coagulation to treat individuals with *** This study was a single-center comparative analysis conducted on patients treated at a Noble Institute of Gastroenterology,Ahmedabad,hospital between 2020 and *** research aimed to retrospectively analyze patient data on GERD symptoms and proton pump inhibitor(PPI)dependence who underwent EFTP using the GERD-X system along with argon plasma coagulation(APC).The primary endpoint was the mean change in the total gastroesophageal reflux disease health-related quality of life(GERD-HRQL)score compared to the baseline measurement at the 3-month *** endpoints encompassed enhancements in the overall GERD-HRQL score,improvements in GERD symptom scores at the 3 and changes in PPI usage at the 3 and 12-month time *** In this study,patients most were in Hill Class II,and over half had ineffective esophageal *** the EFTP procedure,there were significant improvements in heartburn and regurgitation scores,as well as GERDHRQL scores(P<0.001).PPI use significantly decreased,with 82.6%not needing PPIs or prokinetics at end of 1 *** significant adverse events related to the procedures were observed in either *** The EFTP along with APC procedure shows promise in addressing GERD symptoms and improving patients'quality of life,particularly for suitable ***,the application of a lone clip with APC yielded superior outcomes and exhibited greater cost-effectiveness.

关键词： Gastroesophageal reflux disease Endoscopy Quality of life Endoscopic antireflux interventions Retrospective data analysis Gastroesophageal reflux disease symptom scores Proton pump inhibitor

Assessment of reproductive health service utilization in urban slums: Evidence from Western Rajasthan

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Asian pacific Journal of Reproduction 2023年第2期12卷 52-57页

作者： Jyoti Sharma Nitin Kumar Joshi yogesh Kumar Jain Kuldeep Singh Pankaj bhardwaj School of Public Health All India Institute of Medical SciencesJodhpurIndia Department of Community Medicine and Family Medicine and School of Public Health All India Institute of Medical SciencesJodhpurIndia

Objective:To assess the utilization of reproductive health services in urban slum of Jodhpur city,***:A community based cross-sectional study was conducted in an urban slums of Jodhpur city amongst 300 married women of reproductive age between March and June ***-structured questionnaire was used to gather demographic data and information about utilization of antenatal care(ANC)services,delivery and post-partum ***:The majority of females were aged less than 25 years(n=195;65.0%),married after 18 years(n=240;80%),living in extended families(n=265;88.3%)and with monthly family income less than 10000 rupees(n=182;60.7%).Statistically significant associations were found between≥4 ANC visits and educational level of secondary and above(OR 2.47,95%CI 1.03–6.28;P=0.04),older age(OR 15.70,95%CI 14.87–16.54 for women aged 26-35 years,OR 16.14,95%CI 12.12–20.01 for women aged≥36 years;P<0.01),and backward and general castes(OR 15.91,95%CI 13.57–17.85 for backward caste and OR 8.11,95%CI 8.07–8.26 for general category of caste;P<0.01).Seven percent of females had undergone *** age was associated with higher risks of postpartum complications(OR 1.06,95%CI 1.01–1.57 for women aged 26-35 years,OR 3.56,95%CI 1.29–4.69 for women aged≥36 years;P<0.01).In addition,risks of postpartum complications were associated with backward and general castes(OR 1.69,95%CI 1.34–2.13 for backward classes and OR 5.01,95%CI 4.29–5.31 for general category castes;P<0.01),and more than 4 ANC visits(OR 0.20,95%CI 0.09–0.34;P<0.01).Conclusions:More frequent ANC visits are associated with a lower risk of postpartum ***,a high utilization of reproductive health services represents good implementation of reproductive and child health programme at the peripheral level resulting in a stark rise in maternal health indicators in the state of Rajasthan.

关键词： Female Pregnancy Maternal health Maternal health services Prenatal care Postpartum period Facilities and services utilization Health services accessibility

Investigation of magnetoelectric effect in lead free K0.5Na0.5NbO3–BaFe12O19 novel composite system

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Journal of Advanced Ceramics 2019年第3期8卷 333-344页

作者： yogesh KUMAR KLYADAV Jyoti SHAH RKKOTNALA Smart Materials Research Laboratory Department of PhysicsIndian Institute of Technology RoorkeeRoorkee247667India National Physical Laboratory New DelhiDelhi110012India

Lead-free magnetoelectric composites(1-x)K0.5Na0.5NbO3–(x)BaFe12O19(x = 30, 40, and 50 wt%) are synthesized using solid state reaction method. X-ray diffraction(XRD) patterns confirm formation of diphase composites. Field emission scanning electron microscopy(FE-SEM) gives information about grain size, connectivity, and microstructure of constituent phases. Dielectric parameters of composite samples are studied as a function of temperature and the transition temperatures corresponding to both the constituent phases are observed in the composite samples. Dielectric constant has been found to decrease with addition of ferrite. Room temperature multiferroic behaviour has been confirmed using P–E and M–H hysteresis loops and magnetoelectric measurement. Polarization is found to decrease;however, magnetization increases with ferrite weight percentage. The highest αME of 4.08 mV/(cm·Oe) is obtained for x = 30 wt% composite and it is realized that ferrite content significantly affects magnetoelectric behaviour.

关键词： composite materials X-ray diffraction(XRD) microstructure dielectric multiferroic

A novel slot scheduling technique for duty-cycle based data transmission for wireless sensor network

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Digital Communications and Networks 2022年第3期8卷 351-358页

作者： yogesh Tripathi Arun Prakash Rajeev Tripathi Department of Electronics and Communication Engineering Motilal Nehru National Institute of Technology AllahabadPrayagraj211004India

The duty cycling process involves turning a radio into an active and dormant state for conserving energy. It is a promising approach for designing routing protocols for a resource-constrained Wireless Sensor Networks (WSNs). In the duty cycle-based WSNs, the network lifetime is improved and the network transmission is increased as compared to conventional routing protocols. In this study, the active period of the duty cycle is divided into slots that can minimize the idle listening problem. The slot scheduling technique helps determine the most efficient node that uses the active period. The proposed routing protocol uses the opportunistic concept to minimize the sender waiting problem. Therefore, the forwarder set will be selected according to the node's residual active time and energy. Further, the optimum routing path is selected to achieve the minimum forwarding delay from the source to the destination. Simulation analysis reveals that the proposed routing scheme outperforms existing schemes in terms of the average transmission delay, energy consumption, and network throughput.

关键词： Duty cycle Energy model Wireless sensor network Slot scheduling technique

Comparison of detached eddy simulation and standard k-ε RANS model for rack-level airflow analysis inside a data center

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Building Simulation 2022年第9期15卷 1595-1610页

作者： Anashusen Saiyad yogesh Fulpagare Atul Bhargav Mechanical Engineering Energy Systems Research LaboratoryIndian Institute of Technology GandhinagarPalajGandhinagarGJ382355India

High computing demands and data privacy regulations from many countries in the world have resulted in the expansion of data *** this,energy consumption by data centers has increased to an alarming *** centers are highly dynamic due to time-dependent server heat generation and cold-hot aisle arrangements,making it difficult to have real-time control for efficient thermal *** cooling strategies based on conservative set points affect energy *** of expensive field measurements,CFD analysis of the flow field inside the data center can provide insightful data to assist the heat release from the *** detailed rack-level flow field inside the data center is missing in the literature as most of the studies are based on approximate results using the RANS-based k-ε ***,DES-based models have shown the ability to resolve complex flow *** this finding,rack-level CFD analysis of the data center is performed using DES and standard k-ε *** first,average rack inlet and outlet air temperatures in steady-state were validated with experiments within the accuracy of 1.4℃.The distributions of turbulent kinetic energy and mean velocity inside the cold aisle were *** recirculation region in the cold aisle was well-captured by the DES and qualitatively validated with the experiments compared to the k-e *** k-ε model failed to predict SHI,RTI,and/3 metrics,whereas the DES model successfully captured recirculation and self-heating of the upper *** acceptable trade-off between computational cost and accuracy for the simulations would be a pivotal parameter for the selection of either DES or the k-ε model for the data center CFD *** porous media assumption of the servers can bring uncertainties for turbulent quantities and hence further DES model for a data center can provide additional insights in this study.

关键词： data center CFD DES RANS thermal management

Long-term photometric study of a faint W UMa binary in the direction of M31

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Research in Astronomy and Astrophysics 2017年第11期17卷 59-70页

作者： yogesh Chandra Joshi Rukmini Jagirdar Aryabhatta Research Institute of Observational Sciences Manora Peak Nainital 263002 India Center for Advanced Study in Astronomy Osmania University 500007 India

We carry out a re-analysis of the photometric data in Rclc bands which were taken during the Nainital Microlensing Survey from 1998 to 2002 with the aim to detect gravitational microlensing events in the direction of M31. Here, we do photometric analysis of a faint W UMa binary CSS_JO04259.3＋410629 identified in the target field. The orbital period of this star is found to be 0.266402±0.000018 d. The photometric mass ratio, q, is found to be 0.28±0.01. The photometric light curves are investigated using the Wilson-Devinney （WD） code and absolute parameters are determined using empirical relations which provide masses and radii of the binary as M1 = 1.19±0.09M⊙, M2 = 0.33±0.02M⊙ and R1 = 1.02±0.04R⊙, R2 = 0.58±0.08Re respectively based on Rc band data. Quite similar values are found by analyzing/c band data. From the photometric light curve examination, the star is understood to be a low mass-ratio overcontact binary of A-subtype with a high fill-out factor of about 47%. The binary system is found to be located approximately at a distance of 2.64±0.03 kpc having a separation of 2.01 ±0.05 Re between the two components.

关键词： methods: observational -- techniques: photometric -- binaries: eclipsing -- stars: funda- mental parameters