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Kinetic simulation of an electronegative plasma with a cut-off distribution and modified Bohm criterion

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Plasma Science and Technology 2020年第4期22卷 33-39页

作者： suresh BASNET Raju KHANAL Central Department of Physics Tribhuvan UniversityKirtipurKathmandu 44613Nepal

A kinetic simulation model has been employed to study the properties of an electronegative magnetized plasma sheath assuming the cut-off distribution of electrons and negative *** fundamental kinetic Bohm condition for the electronegative magnetized plasma has paramount importance for the formation of a stationary plasma sheath near the material *** presence of an oblique magnetic field in an electronegative plasma affects the ion distribution at the plasma injection side and at the *** temperature profile of negative charged particles has a non-uniform distribution,which determines the energy flow towards the wall.

关键词： Bohm condition kinetic simulation plasma–wall interaction electronegative plasma

OPTIMAL PRICING OF A PERSONALIZED PRODUCT

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Journal of Systems Science and Systems Engineering 2008年第1期17卷 30-35页

作者： suresh P.SETHI School of Management The University of Texas at Dallas 800 W.Campbell Rd.RichardsonTX 75080

This paper deals with optimal pricing of a personalized product such as a personal portrait or photo. A new model of the pricing structure inspired by two real-life cases is introduced to the literature and solved to obtain optimal photo sitting fees and the final product price. A sensitivity analysis with respect to the problem parameters is performed.

关键词： Personalized product pricing salvage loss

Optimal PV Array Configuration for Extracting Maximum Power Under Partial Shading Conditions by Mitigating Mismatching Power Losses

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CSEE Journal of Power and Energy Systems 2022年第2期8卷 499-510页

作者： Praveen Kumar Bonthagorla suresh Mikkili the Electrical and Electronics Engineering Department National Institute of Technology Goa403401India

The grid-connected or standalone PV central inverter architecture is comprised of several PV modules which are connected in different ways to form the PV *** power generation capability of the PV array is primarily affected by partial shading conditions(PSC).Due to PSCs,the power output of the PV array is dramatically reduced,and mismatching losses are induced in the PV *** on the extent of these problems,multiple peaks also appear in the power-voltage(P-V)curve,which makes it very difficult to track the global maximum power point(GMPP).The main objective of this research paper is to model and simulate the series(S),series-parallel(SP),bridge-link(BL),honey-comb(HC),total-cross-tied(TCT)and proposed triple-tied(TT)solar PV array configurations under various partial shading *** performance of all PV configurations is evaluated under a uniform approach,considering eight different shading *** performance of the considered PV configurations is analyzed in terms of their mismatching power losses,fill factors,efficiency,global maximum power points(GMPPs),local maximum power points(LMPPs),voltages and currents at GMPPs,open circuit voltage and short circuit *** above-mentioned PV configurations are modeled and simulated in a Matlab/Simulink environment by considering the KC-200GT module parameters.

关键词： Photo voltaic(PV) PV array configurations triple-tied(TT) maximum power point(MPP) partial shading mismatching power losses fill factor efficiency

Assessment of Cross-coupling Effects in PV String-integrated-converters with P&O MPPT Algorithm Under Various Partial Shading Patterns

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CSEE Journal of Power and Energy Systems 2022年第4期8卷 1013-1028页

作者： Suneel Raju Pendem suresh Mikkili the Electrical and Electronics Engineering Department National Institute of Technology GoaPonda 403401India

A signifcant challenge in the progress and development of Building-Integrated-Photovoltaic(B-I-PV)systems is concerned with the extraction of maximum power from PV *** PV system archtecture is an essential feature to extract the maximum *** conventional PV-centralinverter architecture consists of various connections among the PV modules,which are sensitive to shading effects and pro-duces mismatching power loss under partial shading conditions(PSCs),Hence,photovoltaic-distributed-maximum power point tracking(PV-D-MPPT)architecture has been proposed to extract the maximum ***-1 D-MPPT architecture,the output terminals of DC-DC converters are connected either in series or parallel *** main limitation of the series configuration in open-loop MPPT control is the crosscoupling *** of cross-coupling effects,the maximum-power-point(M-P-P)operation of shaded PV modules is lost under *** lost in M-P-P operation of shaded PV module also affects the unshaded modules M-P-P *** crosscoupling ffeets,the DC-DC converters are consuming the power instead of delivering to the *** the research activity,there are hardly any papers presenting a clear,comprehensive and mathematical analysis on the existence of cross-couplings in PV string-integrated-converters(S-1-Cs).This article presents a mathematical analysis and also explains the conditions for the existent of cross-coupling *** experimental results also validate with the mathematically analysed *** article also discusses the modeling of the two-diode model of PV module,design of boost type S-1C,and the Perturb and Observe(P&O)MPPT algorithm implementation.

关键词： Cross-coupling ffects mismatching power loss partial shading conditions(PSCs) PV-central-inverter architecture PV-D-MPPT architecture S-I-Cs series configuration

A Typical Review on Static Reconfiguration Strategies in Photovoltaic Array Under Non-Uniform Shading Conditions

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CSEE Journal of Power and Energy Systems 2023年第6期9卷 2018-2039页

作者： Chavan Vinaya Chandrakant suresh Mikkili Department of Electrical and Electronics Engineering National Institute of Technology GoaIndia

Maximum power extraction from the photovoltaic(PV) system plays a critical role in increasing efficiency duringpartial shading conditions (PSCs). It directly reduces the outputpower of the PV array. There are different factors, such as bypassdiode configuration, array size, array configuration, shade intensity, environmental conditions etc., affecting the performance ofthe solar photovoltaic panel. Furthermore, series (S), parallel (P),series-parallel (SP), total-cross-tied (TCT), bridge-linked (BL),and honey-comb (HC), etc., are the various configurations to dealwith the mentioned issues. But these PV array configurations alsohave drawbacks, such as low dispersion factor, mismatch losses,and line losses under partial shading conditions. To overcomethese issues, the reconfiguration of the PV array is one of theeffective approaches. A comprehensive study of literature showsthat PV modules are connected under different reconfiguredschemes namely Sudoku, Optimal Sudoku, Magic square, zigzag, Skyscraper, etc. In this paper, a comprehensive review isperformed to highlight the advantages and limitations of eachscheme. This study can be used to address the advancementin this area since some parameter comparisons are made at theend of every technique, which might be a prominent base-rule forpicking the most promising reconfiguration technique for furtherresearch.

关键词： Data visualization fault diagnosis IoT network photovoltaic system wireless remote monitoring

Performance Investigation of Hybrid and Conventional PV Array Configurations for Grid-connected/Standalone PV Systems

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CSEE Journal of Power and Energy Systems 2022年第3期8卷 682-695页

作者： Praveen Kumar Bonthagorla suresh Mikkili Department of Electrical and Electronics Engineering National Institute of TechnologyGoaIndia

Currently,the critical challenge in solar photovoltaic(PV)systems is to make them energy *** of the key factors that can reduce the PV system power output is partial shading conditions(PSCs).The reduction in power output not only depends on a shaded region but also depends on the pattern of shading and physical position of shaded modules in the *** to PSCs,mismatch losses are induced between the shaded modules which can cause several peaks in the output power-voltage(P-V)*** series-parallel(SP),total-cross-tied(TCT),bridge-link(BL),honey-comb(HC),and triple-tied(TT)configurations are considered as conventional configurations,which are severely affected by PSCs and generate more mismatch power losses along with a greater number of local *** reduce the effect of PSCs,hybrid PV array configurations,such as series-parallel:total-cross-tied(SP-TCT),bridge-link:total-cross-tied(BL-TCT),honey-comb:total-cross-tied(HC-TCT)and bridge-link:honey-comb(BL-HC)are *** paper briefly discusses the modeling,simulation and performance evaluation of hybrid and conventional 7×7 PV array configurations during different PSCs in a Matlab/Simulink *** performance of hybrid and conventional PV configurations are evaluated and compared in terms of global maximum power(GMP),voltage and currents at GMP,open and short circuit voltage and currents,mismatch power loss(MPL),fill factor,efficiency,and a number of local maximum power peaks(LMPPs).

关键词： Fill factor global maximum power(GMP) hybrid PV array configuration maximum power point(MPP) mismatch power loss(MPL) partial shading triple-tied(TT)

Plant growth-promoting rhizobacteria--alleviators of abiotic stresses in soil: A review

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Pedosphere 2020年第1期30卷 40-61页

作者： Madhurankhi GOSWAMI suresh DEKA Environmental Biotechnology Laboratory Resource Management and Environment SectionLife Sciences DivisionInstitute of Advanced Study in Science and Technology(IASST)Guwahati Assam 781035(India)

With the continuous increase in human population,there is widespread usage of chemical fertilizers that are responsible for introducing abiotic stresses in agricultural crop *** stresses are major constraints for crop yield and global food security and therefore require an immediate *** implementation of plant growth-promoting rhizobacteria(PGPR)into the agricultural production system can be a profitable alternative because of its efficiency in plant growth regulation and abiotic stress *** bacteria have the potential to promote plant growth and to aid in the management of plant diseases and abiotic stresses in the soil through production of bacterial phytohormones and associated metabolites as well as through significant root morphological *** changes result in improved plant-water relations and nutritional status in plants and stimulate plants’defensive mechanisms to overcome unfavorable environmental ***,we describe the significance of plant-microbe interactions,highlighting the role of PGPR,bacterial phytohormones,and bacterial metabolites in relieving abiotic environmental stress in *** research is necessary to gather in-depth knowledge on PGPR-associated mechanisms and plant-microbe interactions in order to pave a way for field-scale application of beneficial rhizobacteria,with the aim of building a healthy and sustainable agricultural ***,this review aims to emphasize the role of PGPR in growth promotion and management of abiotic soil stress with the goal of developing an eco-friendly and cost-effective strategy for future agricultural sustainability.

关键词： phytohormones plant-microbe interaction root colonization root morphological change secondary metabolites stress alleviation stress tolerance

Prediction based traffic management in a metropolitan area

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Journal of Traffic and Transportation Engineering(English Edition) 2020年第4期7卷 447-466页

作者： suresh Chauhan Pallapa Venkataram Automotiue Research Center Vellore Institute of TechnologyVellore 632014India Department of Electrical Communication Engineering Indian Institute of ScienceBangalore 560012India

In recent years,modern metropolitan areas are the main indicators of economic growth of *** metropolitan areas,number and frequency of vehicles have increased tremendously,and they create issues,like traffic congestion,accidents,environmental pollution,economical losses and unnecessary waste of *** this paper,we propose traffic management system based on the prediction information to reduce the above mentioned issues in a metropolitan *** proposed traffic management system makes use of static and mobile agents,where the static agent available at region creates and dispatches mobile agents to zones in a metropolitan *** migrated mobile agents use emergent intelligence technique to collect and share traffic flow parameters(speed and density),historical data,resource information,spatio-temporal data and so on,and are analyzes the static *** emergent intelligence technique at static agent uses analyzed,historical and spatio-temporal data for monitoring and predicting the expected patterns of traffic density(commuters and vehicles)and travel times in each zone and *** static agent optimizes predicted and analyzed data for choosing optimal routes to divert the traffic,in order to ensure smooth traffic flow and reduce frequency of occurrence of traffic congestion,reduce traffic density and travel *** performance analysis is performed in realistic scenario by integrating NS2,SUMO,OpenStreatMap(OSM)and MOVE *** effectiveness of the proposed approach has been compared with the existing approach.

关键词： Traffic management Traffic prediction Travel time prediction Agent Emergent intelligence Swarm intelligence

Engineering biomolecular systems: Controlling the self-assembly of gelatin to form ultra-small bioactive nanomaterials

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Bioactive Materials 2022年第12期7卷 321-336页

作者： Dhananjay suresh Agasthya suresh Raghuraman Kannan Department of Radiology University of MissouriColumbiaMO65212United States Department of Bioengineering University of MissouriColumbiaMO65212United States

The size of nanocarriers determines the biological property of the materials, especially as it relates to intratumoral distribution. Previous research has shown that sizes of 10-50 nm penetrate deep inside the tumor, resulting in better efficacy. On the other hand, studies have shown that gelatin exhibits excellent biological properties, including compatibility, degradability, and toxicity. Therefore, FDA approved gelatin as a safe material to use as an excipient in injectables. The bottleneck is the nonexistence of smaller-sized gelatin nanoparticles (GNPs) to realize the full potential of these biomaterials. Yet, GNPs with sizes of less than 50 nm have not been reported;the synthetic strategy reported in the literature uses “uncontrolled crosslinking coupled with nanoprecipitation”, resulting in larger particle size. We have developed a new method to self-assemble gelatin strands by using an anionic, phosphate-based crosslinker and controlled precipitation. The method we developed produced ultra-small gelatin nanoparticles (GX) of size 10 nm with a high degree of reproducibility, and it was characterized using dynamic light scattering (DLS), Energy-dispersive X-ray spectroscopy (EDS), High-resolution transmission, and scanning electron microscopy (HR-TEM/STEM). We also explored GX as a bioactive platform to encapsulate imaging and therapy agents within the cavity. Interestingly, we were able to encapsulate 2 nm size gold nanoparticles within the void of GX. The versatile nature of the GX particles was further demonstrated by surface functionalizing with larger size gelatin nanoparticles to form core-satellite nanocomposites. Additionally, we studied the tumor penetrability of dye-tagged 10, 50, and 200 nm gelatin nanoparticles. The study showed that smaller size gelatin nanoparticles penetrate deeper tumor regions than larger particles. In general, GX was efficient in penetrating the inner region of the spheroids. The results demonstrate the potential capabilities

关键词： Gelatin nanoparticle synthesis Nanocomposite Self-assembly 3D tumor spheroids Ultra-small