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Open Journal of Soil Science 2012年第3期2卷 320-332页

作者： george Va.g.ese Hegde Ramakrishna a.g. nirmal kumar L. Durga Prashanth g. Santosh Department of Civil Engineering National Institute of Technology India

Sub-grade soils of lateritic origin encountered in the construction of highway embankments in various regions of India, often comprise intrusions of soft lithoma.g.c soils that result in la.g. settlements during constructions, and differential settlements at later stages. This necessitates the use of appropriate soil improvement techniques to improve the load-carrying capacity of pavements. This work deals with accelerated consolidation of un-reinforced and coir-rein- forced lateritic lithoma.g.c soil blends, provided with three vertical sand drains. The load-settlement characteristics were studied for various preloads ra.g.ng from 50 kg (0.0013 N/mm2) to 500 kg (0.013N/mm2) on soil specimens prepared in circular ferro-cement moulds. It was observed that at lower preloads up to 200kg, across the blends, the relative increase in consolidation (Rct) for randomly reinforced soil with vertical drains was sig-nificantly higher than that of un-reinforced soil without vertical drains, with an average value of 124.8%. Also, the Rct for un-reinforced soil with vertical drains was quite higher than that of un-reinforced soil without vertical drains, with an average value of 103.9%. In the case of higher preloads, the Rct values for randomly reinforced soil with vertical drains were moderate with an average value of 30.88%, while the same for un-reinforced soil with vertical drains was about 20.4%. The aspect-ratio of coir fibers used was 1:275.

关键词： Vertical Sand Drains Accelerated Consolidation Settlement Coir Reinforcement Laterite Shedi Lithoma.g.

Microa.g.l bioinoculants for sustainable agriculture and their interactions with soil biotic and abiotic components:A review

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Pedosphere 2024年第2期34卷 297-314页

作者： Shisy JOSE nirmal RENUKA Sachitra kumar RATHA Sheena kumarI Faizal BUX Institute for Water and Wastewater Technology Durban University of TechnologyP.O.Box 1334Durban 4000South Africa a.g.l Biotechnology Laboratory Department of BotanyCentral University of PunjabBathinda 151401India Phycology Laboratory Council of Scientific and Industrial Research-National Botanical Research InstituteLucknowUttar Pradesh 226001India

Modern agricultural practices have posed a detrimental impact on the environment due to their intensive use to meet the food demands of an ever-increasing *** this context,microa.g.l bioinoculants,specifically cyanobacteria and green microa.g.e,have emerged as sustainable options for agricultural practices to improve soil organic carbon,nutrient availability,microbial quality,and plant *** overview of current and future perspectives on the use of microa.g.l bioinoculants in agriculture practices is presented in this review,along with a discussion of their interactions with soil biotic and abiotic factors that affect soil fertility,plant health,and crop *** benefits of microa.g.l bioinoculants include releasing agronomically important metabolites(exopolymers and phytohormones)as well as solubilizing soil ***,they function as biocontrol agents against soil-borne pathogens and facilitate the establishment of rhizosphere communities of agricultural *** far,very few studies have explored the basic mechanisms by which microa.g.l bioinoculants interact with soil biotic and abiotic *** recent years,advanced molecular techniques have contributed to a better understanding of these interactions.

关键词： biocontrol agent biofertilizer cyanobacteria microa.g.e microbial community molecular technique plant growth soil fertility

Revolutionizing palliative care:Electrocautery-enhanced lumenapposing metal stents in endoscopic-ultrasound-guided biliary drainage for malignant obstructions

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World Journal of gastrointestinal Surgery 2024年第7期16卷 2358-2361页

作者： nirmal kumar Reddy Onteddu Naga Sai Rasagna Mareddy Sai Swarupa R Vulasala Jayabharath Onteddu Mayur Virarkar Department of Internal Medicine University of Florida College of MedicineJacksonvilleFL 32209United States Department of Diagnostic Radiology University of AlabamaBirminghamAL 35294United States Department of Diagnostic Radiology University of Florida College of MedicineJacksonvilleFL 32209United States Department of Public Health Sciences University of FloridaGainesvilleFL 32611United States

Patients with malignant biliary obstruction,following endoscopic retrograde chola.g.opancreatography(ERCP)failure could be referred for endoscopicultrasound-guided biliary drainage through electrocautery-enhanced(ECE)lumen-apposing metal stent(LAMS)***,the efficacy and safety of ECE-LAMS in this scenario have remained debatable due to minimal scientific *** current confirmed 91.0%clinical success,96.7%technical success,7.3%reintervention rate,and 17.5%adverse events,following the treatment of malignant biliary obstruction with ECE-LAMS ***,ECE-LAMS proved to be a.g.neralizable strategy for managing biliary obstruction for patients who were excluded from ERCP.

关键词： Endoscopic retrograde chola.g.opancreatography Electrocautery-enhancedlumen-apposing metal stent Biliary drainage Biliary stent Endoscopic ultrasound

Recent progress and perspective on batteries made from nuclear waste

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Nuclear Science and Techniques 2023年第3期34卷 1-8页

作者： nirmal kumar Katiyar Saurav goel School of Engineering London South Bank UniversityLondonSE10 AAUK University of Petroleum and Energy Studies Dehradun248007India

Sustainable energy sources are an immediate need to cope with the imminent issue of climate cha.g. the world is facing *** particular,the long-lasting miniatured power sources that can supply energy continually to power handheld ga.g.ts,sensors,electronic devices,unmanned airborne vehicles in space and extreme mining are some of the examples where this is an acute *** is known from basic physics that radioactive materials decay over few years and some nuclear materials have their half-life until thousands of *** past five decades of research have been spent harnessing the decay energy of the radioactive materials to develop batteries that can last until the radioactive reaction ***,an emergent opportunity of industrial symbiosis to make use of nuclear waste by using radioactive waste as raw material to develop bat-teries with long shelf life presents a.g.eat opportunity for sustainable energy resource ***,the current canon of research on this topic is *** perspective draws fresh discussions on the topic while highlighting future directions in this wealthy arena of *** abstract A long-lasting miniaturised nuclear battery utilising 14C radioactive isotope as fuel.

关键词： Sustainable energy Nuclear waste battery Nano-diamond

Infrared Spectra of PH3 and NF_(3): An a.g.braic Approach

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Chinese Physics Letters 2013年第7期30卷 9-12页

作者： Joydeep Choudhury nirmal kumar Sarkar Ramendu Bhattacharjee Department of Physics Assam UniversitySilchar-788011India Department of Physics Karimganj CollegeKarimganj-788710India

Molecular spectroscopy is a branch of physics which deals with the interaction of electromagnetic radiation with *** the new theoretical approach,i.e.,Lie a.g.braic approach,we calculate the infrared spectra of phosphine in the ra.g. from 3000 cm^(-1) to 9500 cm^(-1) and nitrogen trifluoride in the ra.g. from 900 cm^(-1) to 4500 cm^(-1).The model Hamiltonian constructed seems to describe the P–H and N–F stretching modes accurately with only four numbers of *** present calculation not only predicts the higher overtones but also shows good agreement with the few observed data.

关键词： parameters. Infrared stretching

Tree Age Affects Postharvest Attributes and Mineral Content in Amrapali Ma.g.(Ma.g.fera indica) Fruits

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Horticultural Plant Journal 2018年第2期4卷 55-61页

作者： MEENA nirmal kumar ASREY Ram Division of Food Science and Postharvest Technology ICAR-Indian Agriculture Research Institute

The study was carried out to investigate the effect of tree age on postharvest attributes and mineral content of Amrapali ma.g. fruits. Effect of 3 different tree ages(6, 18 and 30 years) on functional components, including the antioxidant activity(AOX), total phenols, total carotenoids,ascorbic acid and minerals like Ca, K, Mg, Fe, Zn, Cu, Mn and B along with total sugars, total soluble solids(TSS) and titratable acidity(TA),respiration rate, polygalacturonase(Pg) and pectin methylesterase(PME) activities in Amrapali cultivar were studied. With tree ageing total phenols, ascorbic acid and antioxidant activity decreased whereas total carotenoids increased. Ca diminished and K elevated with the tree age progression while, B, Fe, Cu, Zn, and Mn showed an indefinite pattern. Total soluble solids and total sugars were recorded higher in 18 year old tree fruits. Fruit respiration rate, polygalacturonase and pectin methylesterase activities showed an upward trend with tree ageing. The study indicates that fruit produced from middle age group ma.g. orchard(18 year old) suits to the requirement of consumers as well as industry.

关键词： ma.g.(Ma.g.fera indica) tree age functional parameter mineral

Vibrational Spectroscopy of CH/CD Stretches in Propadiene： An a.g.braic Approach

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Chinese Physics Letters 2009年第2期26卷 36-38页

作者： Joydeep Choudhury nirmal kumar Sarkar Srinivasa Rao Karumuri Ramendu Bhattacharjee Department of Physics Assam University Silchar- 788011 India Department of Physics Karimganj College Karimganj-788710 India

Using Hamiltonian based on Lie a.g.braic method, the stretching vibrational modes of C3H4 and C3D4 molecules are calculated up to higher overtones. The model appears to describe C-H and C-D stretching modes with less number of parameters. The locality parameter ξ confirms the highly local behaviour of the stretching modes of these molecules.

关键词： No English Keywords

Vibrational Spectroscopy of Stretching and Bending Modes of Nickel Tetraphenyl Porphyrin： an a.g.braic Approach

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Chinese Physics Letters 2009年第9期26卷 122-125页

作者： Srinivasa Rao KARUMURI Joydeep CHOUDHURY nirmal kumar SARKAR Ramendu BHATTACHARJEE Department of Physics P.B. Siddhartha College of Arts and Sciences Vijayawada-520010 India Department of Physics Assam (a central) University Silchar- 788011 India Department of Physics Karimganj College Karimganj-788710 India

We calculate the vibrational frequencies of nickel tetraphenyl porphyrin for 36 vibrational bands by using the U（2） a.g.braic approach. The a.g.braic parameters in the calculations are accurate with the experimental... 详细信息

关键词： sea surface nonliear interaction numerical method

Influence of temperature dependent heat source/sink on transient MHD free convective flow in an infinite rigid impermeable vertical cylinder with chemical reaction

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Propulsion and Power Research 2023年第4期12卷 568-583页

作者： Naveen Dwivedi Ashok kumar Singh nirmal C.Sacheti Department of Mathematics Institute of ScienceBanaras Hindu UniversityVaranasi 221005India Department of Mathematics Sahu Jain CollegeNajibabadAffiliated to M.J.P.Rohilkhand UniversityBareilly 246763India Retired Professor Department of MathematicsCollege of ScienceSultan Qaboos UniversityAl Khod PC 123MuscatSultanate of Oman

It is increasingly apparent that the inclusion of mass transfer aspects,together with certain thermal conditions,in the momentum and energy equations governing MHD flows leads to a numbers of real life *** this in view,we have attempted an exact analysis of heat and mass transfer aspects in transient hydromagnetic free convective flow of an incompressible viscous fluid through a vertical pipe under an externally applied magnetic field,assuming presence of chemical reaction and heat source/*** governing PDEs,which simplify to a set of 3 linear ODEs in the physical set up considered here,have been solved using Laplace transform technique,with solutions for key physical variables presented in the term of Bessel and modified Bessel *** influence of governing non-dimensional parameters,namely,Hartmann number,Schmidt number,source/sink parameter,Prandtl number and chemical reaction parameter,has been illustrated on the developing velocity and some concentration *** important quantities of engineering interest-surface skin friction and volumetric flow rates-have been computed too and *** notable finding worth mentioning are:(a)heat source presence causes higher fluid velocity as compared to the heat sink;(b)all important surface shear stress can be suitably controlled,among others,by chemical reaction parameter and Schmidt *** key challenge of this study has been to obtain exact closed-form solutions of the field equations,including cumbersome Laplace *** study finds innovative applications in the emerging fields such as magnetic materials processing,chemical processes,solar energy systems,etc.

关键词： Circular cylinder Hydromagnetic transient flow Chemical reaction Source/sink Free convection

Hybrid Machine Learning Model for Face Recognition Using SVM

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Computers, Materials & Continua 2022年第8期72卷 2697-2712页

作者： Anil kumar Yadav R.K.Pateriya nirmal kumar gupta Punit gupta Dinesh kumar Saini Mohammad Alahmadi IES College of Technology Bhopal462044India Maulana Azad National Institute of Technology Bhopal462003India Department of Information Technology Manipal University JaipurJaipur303007India Department of Computer and Communication Engineering Manipal University JaipurJaipur303007India Department of Software Engineering College of Computer Science and EngineeringUniversity of JeddahJeddah23218Saudi Arabia

Face recognition systems have enhanced human-computer interactions in the last ten ***,the literature reveals that current techniques used for identifying or verifying faces are not immune to *** Component Analysis-Support Vector Machine(PCA-SVM)and Principal Component Analysis-Artificial Neural Network(PCA-ANN)are among the relatively recent and powerful face analysis *** to PCA-ANN,PCA-SVM has demonstrated generalization capabilities in many tasks,including the ability to recognize objects with small or la.g. data *** from requiring a minimal number of parameters in face detection,PCA-SVM minimizes generalization errors and avoids overfitting problems better than ***-SVM,however,is ineffective and inefficient in detecting human faces in cases in which there is poor lighting,long hair,or items covering the subject’s *** study proposes a novel PCASVM-based model to overcome the recognition problem of PCA-ANN and enhance face *** experimental results indicate that the proposed model provides a better face recognition outcome than PCA-SVM.

关键词： Face recognition system(FRS) face identification SVM discrete cosine transform(DCT) artificial neural network(ANN) machine learning