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Insect Science 2016年第5期23卷 704-711页

作者： neeti pandey Raman Rajagopal Gut Biology Lab Room No 117 Department of Zoology University of Delhi Delhi 110007 India

Dialeurolonga malleswaramensis Sundararaj （Hemiptera： Aleyrodidae） is a phytophagous sap sucking insect. It infests Polyalthia longifolia, an important avenue tree of India, effective in alleviating noise pollution and having immense medicinal importance. Samples of this insect were collected from Polyalthia longifolia. The cytochrome c oxidase subunit I gene （mtCOl） helped in the molecular characterization of the insect. This study reports the bacterial diversity in D. malleswararnensis adults by high throughput 16S rDNA amplicon pyrosequencing. The major genera identified were Portiera and Arsenophonus. Other bacterial genera detected were uncultured alpha proteobacterium, Sphingopyxis and Methylobacterium. We also employed fluorescence in situ hybridization （FISH） in whole mount samples to confirm the presence of dominant endosymbionts Portiera and Arsenophonus to the bacteriocyte of D. malleswaramensis. This study concludes that combining techniques like 16S rDNA amplicon pyrosequencing and FISH reveal both dominant and rare bacteria. The data also predict the evolutionary position of this pest with respect to other whitefly species using a mitochondrial marker.

关键词： 16S rDNA amplicon pyrosequencing bacterial diversity Dialeurolongamalleswaramensis FISH mtC01

Landslide Susceptibility Mapping Using RBFN-Based Ensemble Machine Learning Models

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 467-500页

作者： Landslide Susceptibility Mapping Using RBFN-Based Ensemble Machine Learning Models Duc-Dam Nguyen Nguyen Viet Tiep Quynh-Anh Thi Bui Hiep Van Le Indra Prakash Romulus Costache Manish pandey Binh Thai Pham Faculty of Civil Engineering University of Transport TechnologyThanh XuanHa Noi100000Vietnam Faculty of Hydraulic Engineering Hanoi University of Civil EngineeringHa Noi100000Vietnam DDG(R)Geological Survey of India Gandhinagar382010India Research Institute of the University of Bucharest Bucharest050663Romania National Institute of Hydrology and Water Management Bucharest013686Romania Department of Civil Engineering Transilvania University of BrasovBrasov500152Romania Danube Delta National Institute for Research and Development Tulcea820112Romania Marwadi University Research Center(MURC) Marwadi UniversityRajkotGujaratBharat360003India Department of Civil Engineering Faculty of Engineering&TechnologyMarwadi UniversityRajkotGujaratBharat360003India

This study was aimed to prepare landslide susceptibility maps for the Pithoragarh district in Uttarakhand,India,using advanced ensemble models that combined Radial Basis Function Networks(RBFN)with three ensemble learning techniques:DAGGING(DG),MULTIBOOST(MB),and ADABOOST(AB).This combination resulted in three distinct ensemble models:DG-RBFN,MB-RBFN,and ***,a traditional weighted method,Information Value(IV),and a benchmark machine learning(ML)model,Multilayer Perceptron Neural Network(MLP),were employed for comparison and *** models were developed using ten landslide conditioning factors,which included slope,aspect,elevation,curvature,land cover,geomorphology,overburden depth,lithology,distance to rivers and distance to *** factors were instrumental in predicting the output variable,which was the probability of landslide *** analysis of the models’performance indicated that the DG-RBFN model,with an Area Under ROC Curve(AUC)of 0.931,outperformed the other *** AB-RBFN model achieved an AUC of 0.929,the MB-RBFN model had an AUC of 0.913,and the MLP model recorded an AUC of *** results suggest that the advanced ensemble ML model DG-RBFN was more accurate than traditional statistical model,single MLP model,and other ensemble models in preparing trustworthy landslide susceptibility maps,thereby enhancing land use planning and decision-making.

关键词： Landslide susceptibility map spatial analysis ensemble modelling information values(IV)

Fe–EBT Chelate Complex: A Novel Mean for Growth of α-FeOOH and γ-Fe_2O_3 Nanostructures

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 1127-1133页

作者： Gajanan pandey Department of Applied Chemistry Babasaheb Bhimrao Ambedkar University

Acicular goethite（a-Fe OOH） and worm-like maghamite（γ-Fe2O3） nanostructures have been prepared adopting a novel route, using Na2[Fe（HL）2（H2O）2] chelate complex in alkaline medium. It is found that concentration of hydrated Fe（III） ions increased with increasing temperature, which later play a key role in generation of different phases of iron oxide. Phase and morphology of the products are investigated using XRD, FTIR, SEM, and TEM analysis. Using UV–Vis spectra, various electronic transitions of goethite and maghamite particles are examined. Maghamite nanostructures exhibit superparamagnetic property at room temperature. On the basis of experimental observations and analytical data, growth mechanism of the nanostructures is discussed.

关键词： Iron oxide Nanostructures Chemical synthesis Growth mechanism Magnetic properties

Review of Microplastic Pollution in the Environment and Emerging Recycling Solutions

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Journal of Renewable Materials 2019年第12期7卷 1251-1268页

作者： Gregory Reimonn Taofeng Lu neeti Gandhi Wan-Ting Chen Department of Plastic Engineering University of Massachusetts LowellLowellMA01854USA School of Chemical Engineering Purdue UniversityWest LafayetteIN47906USA.

Microplastic pollution represents a side-effect stemming from a global plastic waste mismanagement problem and includes degraded particles or mass produced plastic particles less than 5 mm in largest *** small nature of microplastics gives this area of pollution different environmental concerns than general plastic waste in the *** biological toxicity of particles,their internal components,and their surface level changes all present opportunities for these particles to adversely affect the environment around ***,it is necessary to review the current literature surrounding this topic and identify areas where the study of microplastic can be pushed *** we present current methods in studying microplastics,some of the ways by which microplastics affect the environment and attempt to shed light on how this research can *** addition,we review current recycling methods developing for the processing of mixed-plastic *** methods,including hydrothermal processing and solvent extraction,provide a unique opportunity to separate plastic waste and improve the viability of the plastics recycling industry.

关键词： Microplastic pollution additive toxicology marine plastic pollution plastic recycling sustainability

Fingerprint analysis for the determination of hand origin(right/left)using the axis slant in whorl patterns

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Forensic Sciences Research 2022年第2期7卷 285-289页

作者： neeti Kapoor Ashish Badiye Swati Dubey Mishra Department of Forensic Science Government Institute of Forensic ScienceNagpurMaharashtraIndia Shri Vaishnav Institute of Forensic Science Shri Vaishnav Vidyapeeth VishwavidyalayaIndoreMadhya PradeshIndia

Fingerprints are frequently encountered during both civil and criminal *** possess numerous characteristics that assist with personal *** the hand of origin(right or left)for an individual fingerprint would help reduce investigation time and potentially eliminate certain *** this study,we collected a total of 2900 single digit fingerprints from 290 individuals,and the whorl axis slant was examined in the 743 whorl pattern fingerprints(385 from the right hand and 358 from the left hand).A slant towards the right side was present in 81.82%of samples from the right hand,while a slant towards the left side was observed in 80.73%of samples from the left *** applying a chi-square test to the dataset,the results were found to be statistically significant for the determination of hand *** results suggest that the whorl axis slant in a fingerprint is indicative of hand origin(right or left).

关键词： Forensic sciences side determination whorl slant fingerprint analysis crime hand

Progress on Medical Implant:A Review and Prospects

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Journal of Bionic Engineering 2023年第2期20卷 470-494页

作者： Ankur pandey Swagatadeb Sahoo Department of Electronics and Communication Engineering National Institute of Technology JamshedpurJamshedpurJharkhand831014India

Medical implant from different materials such as metals,ceramics,polymers and composites have gained a lot of research attraction due to wide applications in medical industry for treatment,surgical operations and preparing artificial body *** this work,we highlight a comprehensive review of medical implant mechanism,various types of implant materials,factors affecting the performance of implant and different characterization *** review provides an overall summary of the state-of-the-art progress on various interesting and promising material-based medical ***,few new prospects are explained from the established theoretical and experimental results for real-life *** study is expected to promote extended interest of scientists and engineers in recent trend of modern biomaterials based medical implant.

关键词： Implant material Biocompatibility Hydroxyapatite Dielectric constant

Life Cycle Assessment of Recycling High-Density Polyethylene Plastic Waste

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Journal of Renewable Materials 2021年第8期9卷 1463-1483页

作者： neeti Gandhi Nicholas Farfaras Nien-Hwa Linda Wang Wan-Ting Chen Department of Chemical Engineering Virginia Polytechnic and State InstituteBlacksburg24061USA Department of Plastics Engineering University of Massachusetts LowellLowell01854USA School of Chemical Engineering Purdue UniversityWest Lafayette47907USA

Increasing production and use of various novel plastics products,a low recycling rate,and lack of effective recycling/disposal methods have resulted in an exponential growth in plastic waste accumulation in landfills and in the *** better understand the effects of plastic waste,Life Cycle Analysis(LCA)was done to compare the effects of various production and disposal *** shows the specific effects of the cradle-to-grave or cradle-to-cradle scenarios for landfill,incineration,and mechanical *** analysis clearly indicates that increasing recycling of plastics can significantly save energy and eliminate harmful emissions of various carcinogens and GHGs into the *** recycling increases,the need for virgin-plastic production can be greatly ***,the results of this study may help improve current mechanical recycling processes as well as potential future recycling methods,such as chemical *** about the current recycling/disposal methods for plastics have brought increasing attention to the waste accumulation ***,with the current COVID-19 pandemic,plastic accumulation is expected to increase significantly in the near future.A better understanding of the quantitative effects of the various disposal methods can help guide policies and future research toward effective solutions of the plastic waste problem.

关键词： Life Cycle Analysis(LCA) mechanical recycling microplastic chemical recycling plastic policy

Microstructural Features of Spray-Deposited Immiscible Bearing Alloys Al-43Sn and Al-7Sn-1.3Cu-1.3Ni

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Journal of Materials Science & Technology 2003年第5期19卷 437-443页

作者： O.P.pandey Thapar Institute of Engineering & Technology Deemed University Patiala-147004 India

Two commercial grade aluminum based immiscible bearing alloys were spray-deposited using convergent-divergent type of nozzle. The processing parameters for spray-deposition were adjusted in such a way that most of the droplets arrived on the deposition substrate in either liquid or semi-liquid state. The microstructural features of spray-formed and as-cast alloys are compared. In spray-formed alloys equiaxed grains were observed. The cell boundaries and intercellular regions were observed to be decorated with sub-micron sized particles whereas in normal casting the second phase was observed to be segregated along grain boundaries. The morphology and distribution of second phase were observed to have similarity with those in over-spread and atomized powders produced under similar processing conditions. The microstructural features observed with variation in spray conditions are discussed in detail.

关键词： Spray deposition Immiscible bearing alloys Microstructure Atomization

Effect of ultrasonic assisted sintering on mechanical properties and degradation behaviour of Mg15Nb3Zn1Ca biomaterial

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Journal of Magnesium and Alloys 2021年第6期9卷 1989-2008页

作者： Ajit Kumar Pulak M pandey Department of Mechanical Engineering Indian Institute of TechnologyDelhiNew Delhi 110016India

The present work investigates the effect of ultrasonic power(%)and the time of ultrasonic vibration on the sintered density and ultimate compressive strength(UCS)of Mg15Nb3Zn1Ca fabricated using ultrasonic assisted conventional sintering(UACS).The customized UACS setup was designed and manufactured to conduct the experimentations.A customized ultrasonic stepped horn assembly was used for providing vibrations to the sample during ***,to evaluate the efficacy of ultrasonic vibration parameters,the developed setup was used to sinter Mg15Nb3Zn1Ca composite *** study unveiled an increased sintered density and UCS of the fabricated sample by the increase in ultrasonic power(%).Moreover,a decrease in sintered density and UCS was observed with an increase in the time of ultrasonic vibration beyond a certain *** sintered with the assistance of ultrasonic vibration at 100%ultrasonic power,and 20 min of ultrasonic vibration resulted in a sintered density of 1.928±0.062 g·cm^(-3)and UCS of 234.9±12.3 *** obtained mechanical properties of the fabricated sample were comparable to the properties of cortical *** surface morphology and elemental compositions of samples fabricated using UACS declared a fair dispersion of reinforcement in the matrix containing merely the source *** results of corrosion test have showed that the assistance of ultrasonic vibration suppressed the degradation behaviour of the sintered sample after performing electrochemical study of samples using 3-electorde cell ***15Nb3Zn1Ca fabricated using UACS showed a 50.18%and 9.08%of reduction in corrosion rate over conventionally sintered pure Mg and Mg15Nb3Zn1Ca *** addition,electrochemical impedance spectroscopy(EIS)results indicated an enhanced corrosion resistance of the Mg15Nb3Zn1Ca composite material when fabricated at 100%of ultrasonic power with 20 min of vibration *** from that,electrochemical equivalent circuits also result

关键词： Ultrasonic assisted sintering Magnesium Corrosion EIS Mechanical properties

Can we constrain the evolution of HI bias using configuration entropy?

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Research in Astronomy and Astrophysics 2021年第2期21卷 82-88页

作者： Biswajit Das Biswajit pandey Department of Physics Visva-Bharati UniversitySantiniketanBirbhum731235India

We study the evolution of the configuration entropy of HI distribution in the post-reionization era assuming different time evolution of HI *** describe time evolution of linear bias of HI distribution using a simple form b(a)=b_(0)a^(n) with different index *** derivative of the configuration entropy rate is known to exhibit a peak at the scale factor corresponding to theΛ-matter equality in the unbiasedΛCDM *** show that in theΛCDM model with time-dependent linear bias,the peak shifts to smaller scale factors for negative values of *** is related to the fact that the growth of structures in the HI density field can significantly slow down even before the onset ofΛdomination in the presence of a strong time evolution of the HI *** find that the shift is linearly related to the index *** obtain the best fit relation between these two parameters and propose that identifying the location of this peak from observations would allow us to constrain the time evolution of HI bias within the framework of theΛCDM model.

关键词： methods analytical-cosmology theory-large scale structure of the universe