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Microsystems & Nanoengineering 2020年第1期6卷 1078-1092页

作者： Charles Didier Avra kundu Swaminathan Rajaraman Nanoscience Technology Center(NSTC) University of Central FloridaOrlandoFL 32826USA Burnett School of Biomedical Sciences University of Central FloridaOrlandoFL 32827USA Department of Materials Science&Engineering University of Central FloridaOrlandoFL 32816USA Department of Electrical&Computer Engineering University of Central FloridaOrlandoFL 32816USA

We explore the capabilities and limitations of 3D printed microserpentines(µserpentines)and utilize these structures to develop dynamic 3D microelectrodes for potential applications in in vitro,wearable,and implantable microelectrode arrays(MEAs).The device incorporates optimized 3D printedµserpentine designs with out-of-plane microelectrode structures,integrated on to a flexible Kapton®package with micromolded PDMS *** flexibility of the optimized,printedµserpentine design was calculated through effective stiffness and effective strain equations,so as to allow for analysis of various designs for enhanced *** optimized,down selectedµserpentine design was further sputter coated with 7–70 nm-thick gold and the performance of these coatings was studied for maintenance of conductivity during uniaxial strain ***/conforming analysis of the final devices(3D MEAs with a Kapton®package and PDMS insulation)were performed to qualitatively assess the robustness of the finished device toward dynamic MEA applications.3D microelectrode impedance measurements varied from 4.2 to 5.2 kΩduring the bending process demonstrating a small change and an example application with artificial agarose skin composite model to assess feasibility for basic transdermal electrical recording was further demonstrated.

关键词： microelectrode insulation utilize

Seismicity modulation by external stress perturbations in plate boundary *** plate interior

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Geoscience Frontiers 2022年第3期13卷 53-67页

作者： Batakrushna Senapati Bhaskar kundu Shuanggen Jin Department of Earth and Atmospheric Sciences NIT RourkelaRourkela 769008India Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China School of Remote Sensing and Geomatics Engineering Nanjing University of Information Science and TechnologyNanjing 210044China

Characterization of critically stressed seismogenic fault systems in diverse tectonic settings can be used to explore the stress/frictional condition of faults,along with its sensitivity for seismicity modulation by periodic stress ***,the process of seismicity modulation in response to external stress perturbation remains *** this paper,the characteristic difference in the seismicity modulation due to resonance destabilization phenomenon governed by rate-and-state friction is presented and val-idated with the globally reported cases of seismicity modulation in diverse tectonic *** rela-tively faster-moving plate boundary regions are equally susceptible for both shorter-period(e.g.,semi-diurnal,diurnal,and other small tidal constituents)and long-period(e.g.,semi-annual,annual,pole tide and pole wobble)seismicity modulation processes in response to stress perturbations from natural har-monic forcing,including tidal,semi-annual,annual,or multi-annual time *** contrast,slowly deforming stable plate interior regions and diffuse deformation zones appear to be more sensitive for long-period seismicity modulation of semi-annual,annual,or even multi-annual time scales but less sen-sitive for short-period seismicity *** finding is also supported by the theoretical model pre-dictions from the resonance destabilization process and worldwide documented natural observations of seismicity modulation in diverse types of tectonic settings.

关键词： Seismicity modulation Resonance destabilization Plate boundary Stable plate interior

Co-seismic surface displacement of the June 21, 2022 M_(W)6 Khōst,Afghanistan earthquake from InSAR observations

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Geodesy and Geodynamics 2024年第3期15卷 201-208页

作者： Prohelika Dalal Batakrushna Senapati Bhaskar kundu Department of Earth and Atmospheric Sciences National Institute of TechnologyRourkelaOdisha 769008India

A robust estimation of the earthquake location, seismic moment, and fault geometry is essential for objective seismic hazard assessment. Seismic events in a remote location, specifically in the absence of seismic and GNSS networks, can be investigated effectively using the In SAR-based technique. This study adopts the Differential Interferometric SAR(DIn SAR) technique to quantify the co-seismic surface displacement caused by the June 21, 2022, Khōst M_(W)6 earthquake that occurred along the western plate boundary between the Indian and Eurasian plate. The interferograms show that the maximum surface deformation occurred on the northwest and southwest of the fault line. From coherence, the Line of Sight(LOS) displacement, and the co-seismic surface displacement analysis, it has been observed that surface deformation was most pronounced in the southwest region of the fault line, and the surface has moved to the opposite direction along the fault line, which indicates a sinistral slightly oblique strike-slip movement. This In SAR-based observation appears consistent with the seismic waveforms derived from co-seismic surface displacements. Further, it has been argued that the slip deficit accumulated during the period of the last about 48 years along the frontal region of the northward extension of the Suleiman range and associated fault zone is qualitatively estimated at about 1.5 m, which is consistent with the seismic waveforms derived finite slip model.

关键词： Seismic hazard Khōst earthquake DInSAR Slip deficit LOS displacement Finite slip model

Rhinofacial conidiobolomycosis in an immunocompetent 30-year-old male:A case report

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Asian Pacific Journal of Tropical Medicine 2023年第7期16卷 329-331,I0001页

作者： Sourav kundu Sambudhya Chakraborty Department of Tropical Medicine School of Tropical MedicineKolkataWest BengalIndia

Rationale:Fungal rhinosinusitis is a rare entity in immunocompetent patients and is a diagnostic *** is a rare cause of fungal rhinosinusitis which happens to affect immunocompetent *** concerns:A 30-year-old male patient complained of painless progressive swelling of nose for 5 years and painless progressive swelling of upper lip for 4 years associated with nasal obstruction for 5 ***:Rhinofacial ***:Systemic anti-fungals and saturated solution of potassium ***:Swelling initially reduced but again increased eventually as he discontinued ***:Proper adherence to drugs and need for facial reconstructive surgery may need to be considered in such cases of conidiobolomycosis.

关键词： Conidiobolomycosis Fungus Rhinosinusitis Tropical Rhino facial Entomophthoramycosis

Bayesian inference and life testing plans for generalized exponential distribution

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Science China Mathematics 2009年第6期52卷 1373-1388页

作者： kundu Debasis PRADHAN Biswabrata Department of Mathematics and Statistics Indian Institute of Technology KanpurKanpur 208016India Statistical Quality Control & Operations Research Unit Indian Statistical Institute203 B.T.RoadKolkata700108India

Recently generalized exponential distribution has received considerable attentions. In this paper, we deal with the Bayesian inference of the unknown parameters of the progressively censored generalized exponential distribution. It is assumed that the scale and the shape parameters have independent gamma priors. The Bayes estimates of the unknown parameters cannot be obtained in the closed form. Lindley’s approximation and importance sampling technique have been suggested to compute the approximate Bayes estimates. Markov Chain Monte Carlo method has been used to compute the approximate Bayes estimates and also to construct the highest posterior density credible intervals. We also provide different criteria to compare two different sampling schemes and hence to find the optimal sampling schemes. It is observed that finding the optimum censoring procedure is a computationally expensive process. And we have recommended to use the sub-optimal censoring procedure, which can be obtained very easily. Monte Carlo simulations are performed to compare the performances of the different methods and one data analysis has been performed for illustrative purposes.

关键词： shape parameter scale parameter Markov Chain Monte Carlo importance Sampling fisher information matrix 62F15 62F10 62F99

Reactive Navigation of Underwater Mobile Robot Using ANFIS Approach in a Manifold Manner

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International Journal of Automation and computing 2017年第3期14卷 307-320页

作者： Shubhasri kundu Dayal R. Parhi Robotics Lab Department of Mechanical Engineering Rourkela National Institute of Technology Rourkela 769008 India

Learning and self-adaptation ability is highly required to be integrated in path planning algorithm for underwater robot during navigation through an unspecified underwater environment. High frequency oscillations during underwater motion are responsible for nonlinearities in dynamic behavior of underwater robot as well as uncertainties in hydrodynamic coefficients. Reactive behaviors of underwater robot are designed considering the position and orientation of both target and nearest obstacle from robot s current position. Human like reasoning power and approximation based learning skill of neural based adaptive fuzzy inference system（ANFIS）has been found to be effective for underwater multivariable motion control. More than one ANFIS models are used here for achieving goal and obstacle avoidance while avoiding local minima situation in both horizontal and vertical plane of three dimensional *** error gradient approach based on input-output training patterns for learning purpose has been promoted to spawn trajectory of underwater robot optimizing path length as well as time taken. The simulation and experimental results endorse sturdiness and viability of the proposed method in comparison with other navigational methodologies to negotiate with hectic conditions during motion of underwater mobile robot.

关键词： Adaptive fuzzy inference system(ANFIS) error gradient optimal path obstacle avoidance behavior steering angle target seeking behavior

Fuel properties and emission characteristics of biodiesel produced from unused algae grown in India

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Petroleum Science 2018年第2期15卷 385-395页

作者： Rachan Karmakar Krishnendu kundu Anita Rajor School of Energy and Environment Thapar University Department of Biofuel CSIR CMERI CoEFM

The high price of different biodiesels and the need for many of their raw ingredients as food materials are the main constraints to be overcome when seeking the best potential alternative fuels to petro-diesel. Apart from that, some properties like high density, viscosity and acid value along with low cloud and pour points preclude their use in com- pression ignition （CI） engines as these properties can cause serious damage to the parts of the engine and reduce engine life. In this experiment, biodiesel was produced from the oil of unused algae by a two-step ＇acid esterification followed by transesterification＇ procedure. Taguchi＇s method was applied to design the experiment, and a L25 orthogonal array was prepared to optimize the biodiesel production procedure. The optimized conditions for transesterification were： methanol to oil molar ratio of 6：1, catalyst （KOH） concentration of 2.5 wt%, reaction time of 90 min and reaction temperature of 50 ~C, achieving a biodiesel production of 89.7% with free fatty acid content of 0.25%. It was found that the CI engine emitted less CO, CO2 and hydrocarbon and higher NOx using algal biodiesel than that using petro-diesel. All properties of the algal biodiesel were within the limit of ASTM standards.

关键词： Algae Biodiesel Fuel characterization Emission

Future changes in rainfall, temperature and reference evapotranspiration in the central India by least square support vector machine

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Geoscience Frontiers 2017年第3期8卷 583-596页

作者： Sananda kundu Deepak Khare Arun Mondal Department of Water Resources Development and Management Indian Institute of Technology

Climate change affects the environment and natural resources immensely. Rainfall, temperature and evapotranspiration are major parameters of climate affecting changes in the environment. Evapotrans- piration plays a key role in crop production and water balance of a region, one of the major parameters affected by climate change. The reference evapotranspiration or ETo is a calculated parameter used in this research. In the present study, changes in the future rainfall, minimum and maximum temperature, and ETo have been shown by downscaling the HadCM3 （Hadley Centre Coupled Model version 3） model data. The selected study area is located in a part of the Narmada river basin area in Madhya Pradesh in central India. The downscaled outputs of projected rainfall, ETo and temperatures have been shown for the 21st century with the HADCM3 data of A2 scenario by the Least Square Support Vector Machine （LS-SVM） model. The efficiency of the LS-SVM model was measured by different statistical methods. The selected predictors show considerable correlation with the rainfall and temperature and the application of this model has been done in a basin area which is an agriculture based region and is sensitive to the change of rainfall and temperature. Results showed an increase in the future rainfall, temperatures and ETo. The temperature increase is projected in the high rise of minimum temperature in winter time and the highest increase in maximum temperature is projected in the pre-monsoon season or from March to May. Highest increase is projected in the 2080s in 2081-2091 and 2091-2099 in maximum temperature and 2091-2099 in minimum temperature in all the stations. Winter maximum temperature has been observed to have increased in the future. High rainfall is also observed with higher ETo in some decades. Two peaks of the increase are observed in ETo in the April-May and in the October. Variation in these parameters due to climate change might have an impact on the future water reso

关键词： Rainfall Temperature Reference evapotranspiration (ETo) Downscaling Least Square Support Vector Machine (LS-SVM)

Identification and expression profiling of Vigna mungo microRNAs from leaf small RNA transcriptome by deep sequencing

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Journal of Integrative Plant Biology 2014年第1期56卷 15-23页

作者： Sujay Paul Anirban kundu Amita Pal Division of Plant Biology Bose Institute Center for Genomic Sciences National Autonomous University of Mexico

MicroRNAs （miRNAs） represent a class of small non-coding RNA molecules that play a crucial role in post- transcriptional gene regulation. Several conserved and species-specific miRNAs have been characterized to date, predominantly from the plant species whose genome is well characterized. However, information on the variability of these regulatory RNAs in economically important but genetically less characterized crop species are limited. Vigna mungo is an important grain legume, which is grown primarily for its protein-rich edible seeds, miRNAs from this species have not been identified to date due to lack of genome sequence information. To identify miRNAs from V. mungo, a small RNA library was constructed from young leaves. High- throughput IIlumina sequencing technology and bioinformat- ic analysis of the small RNA reads led to the identification of 66 miRNA loci represented by 45 conserved miRNAs belonging to 19 families and eight non-conserved miRNAs belonging to seven families. Besides, 13 novel miRNA candidates in V. mungo were also identified. Expressior patterns of selected conserved, non-conserved, and nove miRNA candidates have been demonstrated in leaf, stem, ant root tissues by quantitative polymerase chain reaction, ant potential target genes were predicted for most of the conserved miRNAs. This information offers genomic resour ces for better understanding of miRNA mediated post transcriptional gene regulation.

关键词： Illumina microRNA next generation sequencing quantitative polymerase chain reaction target transcript

Interacting tachyonic scalar field

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Communications in Theoretical Physics 2021年第2期73卷 102-107页

作者： a kundu S D Pathak V K Ojha Department of Physies Lovely Professional UniversityPhagwaraPunjab144411India School of Sciences SAGE University BhopalMadhya Pradesh462022India

We discuss the coupling between dark energy and matter by considering a homogeneous tachyonic scalar field as a candidate for dark *** obtained the functional form of scale factor by assuming that the coupling strength depends linearly on the Hubble parameter and energy *** also estimated the cosmic age of the Universe for different values of coupling constant.

关键词： dark energy dark matter scalar field achyonic scalar field