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A Comprehensive 3-Steps Methodology for Vibration-Based Fault Detection,Diagnosis and Localization in Rotating Machines

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Journal of Dynamics, Monitoring and Diagnostics 2024年第1期3卷 49-58页

作者： khalid M.Almutairi Jyoti k.sinha Dynamics Laboratory School of EngineeringThe University of ManchesterManchester M139PLUK

In any industry,it is the requirement to know whether the machine is healthy or not to operate machine *** the machine is not healthy then what is the fault in the machine and then finally its *** paper is proposing a 3-Steps methodology for the machine fault diagnosis to meet the industrial requirements to aid the maintenance *** Step-1 identifies whether machine is healthy or faulty,then Step-2 detect the type of defect and finally its location in *** method is extended further from the earlier study on the 2-Steps method for the rotor defects only to the 3-Steps methodology to both rotor and bearing *** method uses the optimised vibration parameters and a simple Artificial Neural Network(ANN)-based Machine Learning(ML)model from the earlier *** model is initially developed,tested and validated on an experimental rotating rig operating at a speed above 1st critical *** proposed method and model are then further validated at 2 different operating speeds,one below 1st critical speed and other above 2nd critical *** machine dynamics are expected to be significantly different at these *** highlights the robustness of the proposed 3-Steps method.

关键词： bearing faults fault diagnosis machine learning rotating machines rotor faults vibration analysis

Mucinous cystadenoma of the appendix with enterocutaneous fistula:a therapeutic dilemma

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Gastroenterology Report 2015年第1期3卷 86-89页

作者： Nawal k.Jha Dipendra k.sinha Abhinav Anand Mrigendra k.Rai Anjana Gandhi Jitin Yadav Sanjay k.Yadav General Surgery Rajendra Institute of Medical SciencesRanchiIndia

Mucinous cystadenoma of appendix is a rare clinical entity with very few reported cases in the *** on optimal surgical management has not been *** report the case of a 65-year-old female patient who presented with fistula over the right iliac *** tomography(CT)of the abdomen suggested abscess of the parietal *** exploration,a mass was found to be arising from the tip of the retroperitoneal appendix and the retroperitoneum was studded with mucoid *** was carried out and final histopathology revealed mucinous cystadenoma with no evidence of *** patient was discharged *** unusual presentation of this disease,as retroperitoneal psuedomyxoma without any intraperitoneal pathology,prompted us to report this case.

关键词： appendiceal tumours mucinous cystadenoma psuedomyxoma peritonei

Effect of Different Plasmonic Nano-Inclusion on Double Negative-Semiconductor Photonic Crystal in Visible Region:Gain Assistance and All-Angle Negative Refraction

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Journal of Electronic Science and Technology of China 2010年第1期8卷 10-15页

作者： Monika Rajput Ravindra k.sinha Delhi Technological University Formally known as Delhi College of Engineering University of Delhi

A gain assisted double negative- Metallo-semiconductor photonic crystal （DN-MSPC） for visible light with effect of different plasmonic （Al, Ag, Au, Cu） nanorod inclusion, is presented. Negative real values of both permeability （μ） and permittivity （ε） with extremely low imaginary values for visible light is obtained by applying Coupled dipole approximation. All-Angle negative refraction is obtained by applying surface plasmon polariton excitation （SPPE） in DN-MSPC operating in a dispersion regime with anti-parallel refracted wave vector and Poynting vector. Index matched to the incident light and compensated losses due the gain assistance leads the light amplification in the designed structure. Furthermore, extremely high left-handed transmission efficiency （〉99%） is also investigated. Demonstration of near and far-field resonance patterns reveal the nano-photonic device applications potential i.e. highly directional optical nanoantenna, filter, etc.

关键词： Nanorods negative index materials,photonic crystal.

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The drift history of the Dharwar Craton and India from 2.37 Ga to 1.01 Ga with refinements for an initial Rodinia configuration

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Geoscience Frontiers 2023年第4期14卷 245-269页

作者： Scott R.Miller Joseph G.Meert Anthony F.Pivarunas Anup k.sinha Manoj k.Pandit Paul A.Mueller George D.kamenov Department of Geological Sciences University of FloridaGainesvilleFL 32601USA U.S.Geological Survey GeologyMineralsEnergyand Geophysics Science CenterUnited States Geological SurveyMoffett FieldCA 94035USA Dr.k.S.krishnan Geomagnetic Research Laboratory Chamanganj BazaarAllahabad 221505India Department of Geology University of RajasthanJaipur 302004RajasthanIndia

Coupled paleomagnetic and geochronologic data derived from mafic dykes provide valuable records of continental *** reconstruct the Proterozoic paleogeographic history of Peninsular India,we report paleomagnetic directions and U-Pb zircon ages from twenty-nine mafic dykes in the Eastern Dharwar Craton near *** analysis yielded clusters of directional data that correspond to dyke swarms at 2.37 Ga,2.22 Ga,2.08 Ga,1.89-1.86 Ga,1.79 Ga,and a previously undated dual polarity *** report new positive baked contact tests for the 2.08 Ga swarm and the 1.89-1.86 Ga swarm(s),and a new inverse baked contact test for the 2.08 Ga *** results promote the 2.08 Ga Dharwar Craton paleomagnetic pole(43.1°N,184.5°E;A95=4.3°)to a reliability score of R=7 and suggest a position for the Dharwar Craton at 1.79 Ga based on a virtual geomagnetic pole(VGP)at 33.0°N,347.5°E(a95=16.9°,k=221,N=2).The new VGP for the Dharwar Craton provides support for the union of the Dharwar,Singhbhum,and Bastar Cratons in the Southern India Block by at least 1.79 *** new and published northeast-southwest moderate-steep dual polarity directions from Dharwar Craton dykes define a new paleomagnetic pole at 20.6°N,233.1°E(A95=9.2°,N=18;R=5).Two dykes from this group yielded 1.05-1.01 Ga 207Pb/206Pb zircon ages and this range is taken as the age of the new paleomagnetic pole.A comparison of the previously published poles with our new 1.05-1.01 Ga pole shows India shifting from equatorial to higher(southerly)latitudes from 1.08 Ga to 1.01 Ga as a component of Rodinia.

关键词： Dharwar India Rodinia U-Pb Paleogeography Grenville

Intensification of photocatalytic decomposition of water by ultrasound

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Journal of Energy Chemistry 2018年第4期27卷 1183-1188页

作者： Arvind Singh A.S.k.sinha Department of Chemical Engineering and Technology Indian Institute of Technology (Banaras Hindu University)

Photocatalysis of water with and without ultrasound was studied using rGO supported CdS catalyst utilizing visible light. A higher hydrogen production was observed when ultrasound was used. This is attributed to a faster removal of bubbles of hydrogen from the surface of photocatalyst due to the mechanical energy associated with ultrasound overcoming surface tension. It has been further reported that the rate of hydrogen production decreased with time due to reversible deactivation of catalyst. This has been attributed to decrease in rate of hydrogen desorption with time.

关键词： Hydrogen Photocatalysis Ultrasound kinetics

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Behavior of an indigenously fabricated transferred arc plasma furnace for smelting studies

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Plasma Science and Technology 2018年第3期20卷 136-145页

作者： A k MANDAL R k DISHWAR O P sinha Department of Metallurgical Engineering IIT(BHU)

The utilization of industrial solid waste for metal recovery requires high-temperature tools due to the presence of silica and alumina, which is reducible at high temperature. In a plasma arc furnace, transferred arc plasma furnace（TAP） can meet all requirements, but the disadvantage of this technology is the high cost. For performing experiments in the laboratory, the TAP was fabricated indigenously in a laboratory based on the different inputs provided in the literature for the furnace design and fabrication. The observed parameters such as arc length, energy consumption, graphite electrode consumption, noise level as well as lining erosion were characterized for this fabricated furnace. The nitrogen plasma increased by around 200 k（200 ℃） melt temperature and noise levels decreased by ~10 d B compared to a normal *** plasma offered 100 k（100 ℃） higher melt temperature with ~5 d B higher sound level than nitrogen plasma. Nitrogen plasma arc melting showed lower electrode and energy consumption than normal arc melting, whereas hydrogen plasma showed lower energy consumption and higher electrode consumption in comparison to nitrogen plasma. The higher plasma arc temperature resulted in a shorter meltdown time than normal arc with smoother arcing. Hydrogen plasma permitted more heats, reduced meltdown time, and lower energy consumption, but with increased graphite consumption and crucible wear. The present study showed that the fabricated arc plasma is better than the normal arc furnace with respect to temperature generation, energy consumption, and environmental friendliness. Therefore, it could be used effectively for smelting-reduction studies.

关键词： smelting transferred arc plasma furnace characterization hydrogen and nitrogen plasma hollow electrode graphite and magnesite lining

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Synthesis and biocompatibility of a biodegradable and functionalizable thermo-sensitive hydrogel

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Regenerative Biomaterials 2015年第3期2卷 177-185页

作者： Mantosh k.sinha Jin Gao Chelsea E.T.Stowell Yadong Wang Department of Bioengineering and the McGowan Institute for Regenerative Medicine University of PittsburghPittsburghPA 15219USA Department of Surgery University of PittsburghPittsburghPA 15260USA Department of Chemical and Petroleum Engineering Swanson School of EngineeringUniversity of PittsburghPittsburghPA 15261USA Department of Mechanical Engineering and Materials Science University of PittsburghPittsburghPA 15261USA Clinical Translational Science Institute University of Pittsburgh School of MedicinePittsburghPA 15261USA The McGowan Institute for Regenerative Medicine University of Pittsburgh School of MedicinePittsburghPA 15261USA

Injectable thermal gels are a useful tool for drug delivery and tissue ***,most thermal gels do not solidify rapidly at body temperature(37C).We addressed this by synthesizing a thermo-sensitive,rapidly biodegrading *** hydrogel,poly(ethylene glycol)-co-poly(propanol serinate hexamethylene urethane)(EPSHU),is an ABA block copolymer comprising A,methoxy poly ethylene glycol group and B,poly(propanol L-serinate hexamethylene urethane).EPSHU was characterized by gel permeation chromatography for molecular weight and 1H NMR and Fourier transformed infrared for *** studies measured the phase transition *** vitro degradation in cholesterol esterase and in Dulbecco’s phosphate buffered saline(DPBS)was tracked using the average molecular weight measured by gel permeation ***/DEAD and resazurin reduction assays performed on NIH 3T3 fibroblasts exposed to EPSHU extracts demonstrated no *** implantation into BALB/cJ mice indicated good biocompatibility in *** biodegradability and biocompatibility of EPSHU together make it a promising candidate for drug delivery applications that demand carrier gel degradation withinmonths.

关键词： biodegradable thermoresponsive hydrogel drug delivery materials synthesize

Prevalence of transfusion transmissible infections among various donor groups:A comparative analysis

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World Journal of Virology 2025年第1期14卷 108-117页

作者： Sanjay k Thakur Anil k.sinha Santosh k Sharma Aarzoo Jahan Dinesh k Negi Ruchika Gupta Sompal Singh Regional Blood Transfusion Centre Hindu Rao Hospital and NDMC Medical CollegeNorth Delhi 110007DelhiIndia Department of Zoology Veer Kunwar Singh UniversityAra 802301BiharIndia Regional Blood Transfusion Centre and Pathology Hindu Rao Hospital and NDMC Medical CollegeNorth Delhi 110007DelhiIndia Department of Cytopathology ICMR-National Institute of Cancer Prevention and ResearchNoida 201301Uttar PradeshIndia

BACkGROUND Transfusion transmissible infections(TTIs)are illnesses spread through contaminated blood or blood *** India,screening for TTIs such as hepatitis B virus(HBV),hepatitis C virus(HCV),human immunodeficiency virus(HIV)-I/II,malaria,and syphilis is mandatory before blood ***,HCV,HBV,and HIV are the leading viruses causing mortality,affecting millions of people globally,including those with co-infections of HIV/HCV and HIV/*** highlight the impact of TTIs on life expectancy and health risks,such as liver cirrhosis,cancer,and other diseases in individuals with chronic ***,millions of blood donations take place annually,emphasizing the importance of maintaining blood *** To study the prevalence of TTIs,viz.,HBV,HCV,HIV I/II,syphilis,and malaria parasite(MP),among different blood donor *** The study assessed the prevalence of TTIs among different blood donor groups in Delhi,*** included total donors,in-house donors,total camp donors,institutional camp donors,and community camp *** for HIV,HBV,and HCV were done using enzyme-linked immunosorbent assay,while syphilis was tested with rapid plasma reagins and MP rapid card *** prevalence of HBV,HCV,HIV,and syphilis,expressed as *** in infection rates between the groups were analyzed usingχ²tests and P-values(less than 0.05).RESULTS The study evaluated TTIs among 42158 blood donors in *** overall cumulative frequency of TTIs in total blood donors was 2.071%,and the frequencies of HBV,HCV,HIV-I/II,venereal disease research laboratory,and MP were 1.048%,0.425%,0.221%,0.377%,and 0.0024%,***-house donors,representing 37656 donors,had the highest transfusion transmissible infection(TTI)prevalence at 2.167%.Among total camp donors(4502 donors),TTIs were identified in 1.266%of donors,while community camp donors(2439 donors)exhibited a prevalence of 1.558%.Institutional camp donors(2063 donors)had the l

关键词： Blood donors Transfusion transmissible infections Hepatitis B virus Human immunodeficiency virus Hepatitis C virus Malaria parasite Syphilis

On Dynamics of Supercooled D2O Water in Mesopore Confinement Studied by Double Quantum NMR

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On Dynamics of Supercooled D2O Water in Mesopore Confinement...