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Plastic scintillator detector for qualitative and quantitative measurements of gamma radiation

Radiation Detection Technology and Methods 2023年第4期7卷 578-588页

作者： Vaishali M.Thakur nitin bhosale Amit Jain Mukesh Sharma L.M.Chaudhari Probal Chaudhury Radiation Safety Systems Division Bhabha Atomic Research CentreTrombayMumbai400085India Department of Physics Nowrosjee Wadia CollegePune411001India

Background Plastic scintillator detectors are rugged and easily manufactured in desired shape,sizes and response time to gamma radiation is prompt as compared with any other scintillator *** popular these detectors are used in radiation monitors one of the application to restrict radioactive material *** are used in gross counting mode to know the presence of *** secondary survey is required to know the nature of the *** The feasibility study of Cylindrical Plastic Scintillator Detector(CPSD)was carried out for the qualitative and quantitative assessment of gamma emitting *** In this work limited gamma spectrometry was carried out using NE110 equivalent cylindrical plastic scintillating material of 5.1 cm diameter and 100 cm *** is optically coupled to photomultiplier tube(PMT).The detector signal is processed using preamplifier,shaping amplifier and further analysed by a multi channel analyser(MCA).CPSD gamma spectrum consists of Compton continuum and Gaussian shaped Compton edge energy(λ_(e))appearing as Compton maxima energy(λ_(max)).Photon transport simulation is used to characterizeλ_(max) as a signature for radionuclides emitting gamma energy/*** case of unresolved gamma energies,it appears as weighted effective Compton maxima *** prominent gamma energies observed across nuclear industries are in the energy range 0.03–3 *** is grouped as low energy,intermediate energy,high energy and ultra-high energy *** simulated spectrum is obtained suing Gaussian broadening parameters deduced from experimentally measured *** efficiency response function is developed from simulated response of detector to standard gamma sources under known source detector *** The mono energetic gamma emitting radioisotopes are identified againstλ_(max) from data *** analysis of spectrum is used to discriminate artificial radioactive materi

关键词： Plastic scintillator detector Gaussian broadening Compton edge Compton maxima Weighted effective Compton maxima Gamma spectrum Multi-channel analyzer

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Developing a Secure Framework Using Feature Selection and Attack Detection Technique

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Computers, Materials & Continua 2023年第2期74卷 4183-4201页

作者： Mahima Dahiya nitin nitin Department of Electrical Engineering and Computer Science College of Engineering and Applied ScienceUniversity of Cincinnati2600 Clifton AveCincinnatiOH 45221USA

Intrusion detection is critical to guaranteeing the safety of the data in the *** though,since Internet commerce has grown at a breakneck pace,network traffic kinds are rising daily,and network behavior characteristics are becoming increasingly complicated,posing significant hurdles to intrusion *** challenges in terms of false positives,false negatives,low detection accuracy,high running time,adversarial attacks,uncertain attacks,*** to insecure Intrusion Detection System(IDS).To offset the existing challenge,the work has developed a secure Data Mining Intrusion detection system(DataMIDS)framework using Functional Perturbation(FP)feature selection and Bengio Nesterov Momentum-based Tuned Generative Adversarial Network(BNM-tGAN)attack detection *** data mining-based framework provides shallow learning of features and emphasizes feature engineering as well as ***,the IDS data are analyzed for missing values based on the Marginal Likelihood Fisher Information Matrix technique(MLFIMT)that identifies the relationship among the missing values and attack *** on the analysis,the missing values are classified as Missing Completely at Random(MCAR),Missing at random(MAR),Missing Not at Random(MNAR),and handled according to the ***,categorical features are handled followed by feature scaling using Absolute Median Division based Robust Scalar(AMDRS)and the Handling of the imbalanced *** selection of relevant features is initiated using FP that uses‘3’Feature Selection(FS)techniques i.e.,Inverse Chi Square based Flamingo Search(ICS-FSO)wrapper method,Hyperparameter Tuned Threshold based Decision Tree(HpTT-DT)embedded method,and Xavier Normal Distribution based Relief(XavND-Relief)filter ***,the selected features are trained and tested for detecting attacks using *** Experimental analysis demonstrates that the introduced DataMIDS framework produces an accurate diagnosis about the

关键词： Cyber security data mining intrusion detection system(DataMIDS) marginal likelihood fisher information matrix(MLFIM) absolute median deviation based robust scalar(AMD-RS) functional perturbation(FP) inverse chi square based flamingo search optimization(ICS-FSO) hyperparameter tuned threshold based decision tree(HpTT-DT) Xavier normal distribution based relief(XavND-relief) and Bengio Nesterov momentum-based tuned generative adversarial network(BNM-tGAN)

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Fault Tolerance in the Joint EDF-RMS Algorithm: A Comparative Simulation Study

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Computers, Materials & Continua 2022年第9期72卷 5197-5213页

作者： Rashmi Sharma nitin nitin Deepak Dahiya University of Petroleum&Energy Studies(UPES) School of Computer ScienceEnergy Acres BuildingBidholiDehradun248007UttarakhandIndia Department of Electrical Engineering and Computer Science College of Engineering and Applied ScienceUniversity of Cincinnati2600 Clifton AveCincinnatiOH 45221United States College of Computer and Information Sciences(CCIS) Majmaah UniversityMajmaah11952Kingdom of Saudi Arabia

Failure is a systemic error that affects overall system performance and may eventually crash across the entire *** Real-Time Systems(RTS),deadline is the key to successful completion of the *** tasks effectively meet the deadline,it means the system is working in pristine ***,missing the deadline means a systemic fault due to which the system can crash(hard RTS)or degrade inclusive performance(soft RTS).To fine-tune the RTS,tolerance is the critical issue and must be handled with extreme *** article explains the context of fault tolerance with improvised Joint EDF-RMS algorithm in *** backup method has been derived to prevent the system from being recursively migrating the same *** any task migrates three times,this migrated task will get shifted to the backup *** backup queue assigns the task to a backup processor and is destined for final *** performance evaluation purposes,a relative graph between fault and failure rates,failure and total processor utilization along with other averages have been ***,these archived results are compared with fault-tolerant Earliest Deadline First(EDF)and Rate Monotonic Scheduling(RMS)algorithms independently in relatively similar *** comparisons show better performance against overloading conditions.

关键词： Fault tolerance joint edf-rms algorithm real-time systems(RTS) distributed systems migration

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Determining Potential Passive Islanding Detection Indicators for Single-point Single Inverter,Single-point Multi-inverter and Multi-point Multi-inverter Scenarios

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CSEE Journal of Power and Energy Systems 2022年第3期8卷 696-709页

作者： nitin Kumar Kulkarni Mohan Khedkar Department of Electrical Engineering Visvesvaraya National Institute of TechnologyNagpurIndia

Distributed Generation(DG)sources,predominantly renewable energy-based,such as solar photovoltaic and wind energy sources,have significantly penetrated into power system *** high penetration of DG sources may lead to the formation of unintentional islands,which is hazardous to both the equipment and personnel,if *** this paper,46 passive parameters are considered to find out which candidate(s)are promising for detecting sustained unintentional islands and avoid false DG *** 46 parameters are derived from point of common coupling(PCC)voltage,DG output current,frequency,power factor angle,active and reactive *** these parameters are tested on standard IEEE 13 and 34 bus distribution networks,integrated with inverter-interfaced DGs at different locations for different penetration levels in the MATLAB/SIMULINK *** parameters are tested for different islanding events(comprising of various local loads,such as conventional parallel RLC resonant load,R,RC,and RL loads)and for different non-islanding *** parameters are then ranked accordingly by a suitable averaging approach based performance ranking *** this analysis,the best candidates are obtained for detecting inverter DG islands at single-point(or single PCC)locations and multi-point(or multiple PCCs)*** best passive candidates are obtained for different island scenarios from which a set of promising islanding detection indicators are proposed.

关键词： Averaging approach inverter DG point of common coupling(PCC) passive parameters test system

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Weight loss endoscopy: Development, applications, and current status

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World Journal of Gastroenterology 2016年第31期22卷 7069-7079页

作者： nitin Kumar Bariatric Endoscopy Institute

Obesity and its comorbidities- including diabetes and obstructive sleep apnea- have taken a large and increasing toll on the United States and the rest of the world. The availability of commercial, clinical, and operative therapies for weight management have not been effective at a societal level. Endoscopic bariatric therapy is gaining acceptance as more effective than diet and lifestyle measures, and less invasive than bariatric surgery. Various endoscopic therapies are analogues of the restrictive or bypass components of bariatric surgery, utilizing gastric remodeling or intestinal anastomosis to achieve proven weight loss and metabolic benefits. Others, such as aspiration therapy, employnovel mechanisms of action. Intragastric balloons have recently been approved by the United States Food and Drug Administration, and a number of other technologies have completed large multicenter trials(such as AspireA ssist aspiration therapy and Primary Obesity Surgery Endolumenal). Endoscopic sleeve gastroplasty and transoral outlet reduction for endoscopic revision of gastric bypass have proven safe and effective in a number of studies. As devices are approved for use, data will continue to accumulate for safety, effectiveness, and cost effectiveness. Bariatric endoscopists should be prepared to appropriately target and apply various endoscopic bariatric therapies in the context of a comprehensive long-term weight management program.

关键词： Weight loss Intragastric balloon Gastric balloon Orbera Reshape dual balloon Endoscopic sleeve Endoscopic sleeve gastroplasty Primary Obesity surgery endolumenal Gastric bypass Gastric bypass revision Obesity

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Coupling effect of pond ash and polypropylene fiber on strength and durability of expansive soil subgrades:An integrated experimental and machine learning approach

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第5期13卷 1101-1112页

作者： nitin Tiwari Neelima Satyam Department of Civil Engineering Indian Institute of Technology IndoreIndoreIndia

This study explores the coupling effect of pond ash(PA)and polypropylene(PP)fiber to control the strength and durability of expansive *** PA is used to chemically treat the expansive soil and PP fiber is adopted as reinforcement against tensile *** sustainable use of PA and PP fiber are demonstrated by performing mechanical(*** compressive strength,split tensile strength and ultrasonic pulse velocity),chemical(pH value,electrical conductivity and calcite content),and microstructural analyses before and after 2nd,4th,6th,8th and 10th freezing-thawing(F-T)*** curing methods with 7 d,14 d and 28 d curing periods are considered to reinforce the 5%,10%,15%and 20%PA-stabilized expansive soil with 0.25%,0.5%and 1%PP *** order to develop predictive models for mechanical and durability parameters,the experimental data are processed utilizing artificial neural network(ANN),in association with the leave-one-out cross-validation(LOOCV)as a resampling method and three different activation *** mechanical and durability properties of the PA-stabilized expansive soil subgrades are increased with PP fiber *** results of ANN modeling predict the mechanical properties perfectly,and the correlation coefficient(R)approaches up to 0.96.

关键词： Expansive soil subgrades Waste utilization Freezing-thawing(F-T) Microstructural assessment Pond ash(PA) Polypropylene(PP)fiber

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Gut microbiome:a balancing act between degeneration and regeneration

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Neural Regeneration Research 2022年第9期17卷 1967-1968页

作者： nitin Saksena Matt Keon OMICS Centre of Excellence G42 HealthcareMasdar CityAbu Dhabi.UAE.And Victoria UniversityMelbourneAustralia GeneiUS DarlinghurstSydneyAustralia

In a symbiotic and mutualistic manner,the gut microbiota strongly influences many vital aspects of host physiology,biology,repair,and *** role of microbiota in many areas of regenerative medicine is just beginning to emerge,but it is under-recognized because of its *** we remove the barriers that impede our understanding of this complex entity,we will uncover some of the most vital facets of our microbiome that make us who we are,its intrinsic connection with not only our wellbeing,but also with regeneration *** will subsequently define its utility in regenerative medicine.

关键词： degeneration mutual remove

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Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid power system

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Frontiers in Energy 2015年第4期9卷 472-485页

作者： nitin Kumar SAXENA Ashwani Kumar SHARMA Deptment of Electrical Engineering NIT Kumkshetra Haryana 136119 India

It is well recognized that the voltage stability of a power system is affected by the load model and hence, to effectively analyze the reactive power compensation of an isolated hybrid wind-diesel based power system, the loads need to be considered along with the generators in a transient analysis. This paper gives a detailed mathematical modeling to compute the reactive power response with small voltage perturbation for composite load. The composite load is a combination of the static and dynamic load model. To develop this composite load model, the exponential load is used as a static load model and induction motors （IMs） are used as a dynamic load model. To analyze the dynamics of IM load, the fifth, third and first order model of IM are formulated and compared using differential equations solver in Matlab coding. Since the decentralized areas have many small consumers which may consist large numbers of IMs of small rating, it is not realistic to model either a single large rating unit or all small rating IMs together that are placed in the system. In place of using a single large rating IM, a group of motors are considered and then the aggregate model of IM is developed using the law of energy conservation. This aggregate model is used as a dynamic load model. For different simulation studies, especially in the area of voltage stability with reactive power compensation of an isolated hybrid power system, the transfer function AQ/AV of the composite load is required. The transfer function of the composite load is derived in this paper by successive derivation for the exponential model of static load and for the fifth and third order IM dynamic load model using state space model.

关键词： isolated hybrid power system (IHPS) compo- site load model static load dynamic load induction motorload model aggregate load

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Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles

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Frontiers of Environmental Science & Engineering 2020年第1期14卷 175-184页

作者： Kanha Gupta nitin Khandelwal Gopala Krishna Darbha Department of Chemical Sciences USER KolkataMohanpurWest BengalPincode 741246India Environmental Nanoscience Laboratory Department of Earth SciencesUSER KolkataMohanpurWest BengalPincode 741246India Center for Climate&Environmental Studies USER KolkataMohanpurWest BengalPincode 741246India

Increasing applications of metal oxide nanoparticles and their release in the natural environment is a serious concern due to their toxic ***,it is essential to have eco-friendly solutions for the remediation of toxic metal oxides in an aqueous *** the present study,eco-friendly Iron Oxide Nanoparticles(IONPs)are synthesized using solvothermal technique and successfully characterized using scanning and transmission electron microscopy(SEM and TEM respectively)and powder X-Ray diffraction(PXRD).These IONPs were further utilized for the remediation of toxic metal oxide nanoparticle,i.e.,*** experiments were also performed in complex aqueous solutions and real water samples to check its applicability in the natural *** study was performed to show *** show that these 200 nm-sized spherical IONPs,as revealed by SEM and TEM analysis,were magnetite(Fe3O4)and contained short-range crystallinity as confirmed from XRD *** experiments show that the composite follows the pseudosecond-order kinetic *** k>0.99 for Langmuir sorption isotherm suggests chemisorption as probable removal mechanism with monolayer sorption of Ce02 NPs on *** than 80%recovery of adsorbed Ce02 NPs through ultrasonication and magnetic separation of reaction precipitate confirms reusability of *** removal%of Ce02 in various synthetic and real water samples was>90%signifying that IONPs are candidate adsorbent for the removal and recovery of toxic metal oxide nanoparticles from contaminated environmental water samples.

关键词： Adsorption toxic metal oxide remediation eco-friendly IONP Iron oxide CeO2 removal

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An Advanced Uncertainty Measure Using Fuzzy Soft Sets:Application to Decision-Making Problems

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Big Data Mining and Analytics 2021年第2期4卷 94-103页

作者： nitin Bhardwaj Pallvi Sharma Department of Mathematics Lovely Professional UniversityPunjab 144411India Department of Mathematics Lovely Professional UniversityPunjabl44411India

In this paper, uncertainty has been measured in the form of fuzziness which arises due to imprecise boundaries of fuzzy sets. Uncertainty caused due to human’s cognition can be decreased by the use of fuzzy soft sets. There are different approaches to deal with the measurement of uncertainty. The method we proposed uses fuzzified evidence theory to calculate total degree of fuzziness of the parameters. It consists of mainly four *** first part is to measure uncertainties of parameters using fuzzy soft sets and then to modulate the uncertainties calculated. Afterward, the appropriate basic probability assignments with respect to each parameter are produced. In the last, we use Dempster’s rule of combination to fuse independent parameters into integrated one. To validate the proposed method, we perform an experiment and compare our outputs with grey relational analysis method. Also,a medical diagnosis application in reference to COVID-19 has been given to show the effectiveness of advanced method by comparing with other method.

关键词： fuzzy soft sets Dempster-Shafer theory grey relational analysis entropy belief measures and medical diagnosis

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