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A framework for building energy management system with residence mounted photovoltaic

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Building Simulation 2021年第4期14卷 1031-1046页

作者： Chellaswamy C Ganesh babu R Vanathi A Department of Electronics and Communication Engineering Kings Engineering CollegeChennaiIndia Department of Electronics and Communication Engineering SRM TRP Engineering CollegeTiruchirappalliIndia Department of Electronics and Communication Engineering Rajalakshmi Institute of TechnologyChennaiIndia

Efficient utilization of a residential photovoltaic (PV) array with grid connection is difficult due to power fluctuation and geographical dispersion. Reliable energy management and control system are required for overcoming these obstacles. This study provides a new residential energy management system (REMS) based on the convolution neural network (CNN) including PV array environment. The CNN is used in the estimation of the nonlinear relationship between the residence PV array power and meteorological datasets. REMS has three main stages for the energy management such as forecasting, scheduling, and real functioning. A short term forecasting strategy has been performed in the forecasting stage based on the PV power and the residential load. A coordinated scheduling has been utilized for minimizing the functioning cost. A real-time predictive strategy has been used in the actual functioning stage to minimize the difference between the actual and scheduled power consumption of the building. The proposed approach has been evaluated based on real-time power and meteorological data sets.

关键词： building energy management convolution neural network photovoltaic coordinated scheduling

A qualitative study on the adverse reactions of mass treatment for lymphatic filariasis in Orissa,India

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Asian Pacific Journal of Tropical Medicine 2010年第1期3卷 55-58页

作者： babu BV Division of Epidemiology Regional Medical Research CentreIndian Council of Medical ResearchBhubaneswar-751 023India & Indian Council of Medical ResearchNew Delhi 110 029India

Objective:To describe the perceptions of community members and programme partners regarding severity,management and impact of adverse reactions on mass drug administration (MDA) ***:Based on various qualitative data collected from five districts of Orissa,India,where MDA had been implemented during 2002 and *** qualitative surveys included focus group discussions with community members and health workers,and semi-structured interviews with key informants in the community,medical officers at primary health centres,district level health officers and private ***:It showed that many people suffered from adverse reactions,though the reactions were not *** paper reported different ways of management of adverse reactions at the community *** impact of adverse reactions on MDA compliance was serious,as many people did not consume the drug due to fear of adverse *** rumours of adverse reactions and news in media deterred people from consuming the ***:All categories of respondents indicates the need of more information to address the problem of adverse reactions during *** present paper warrants incorporating the messages on adverse reactions during health communication and social mobilization campaigns of MDA.

关键词： Lymphatic filariasis Mass drug administration Adverse reactions Qualitative study Orissa India

Synthesis of β-cyclodextrin functionalized gold nanoparticles for the selective detection of Pb2＋ ions from aqueous solution

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Frontiers of Materials Science 2012年第2期6卷 168-175页

作者： B.aswathy G.S.AVADHANI S.SUJI G.SONY Department of Chemistry University of KeralaKariavattom CampusThiruvananthapuramKerala 691021India Department of Materials Engineering Indian Institute of ScienceBangaloreIndia

In the present study we carried out the synthesis of β-cyclodextrin （β-CD） functionalized gold nanoparticles （AuNPs） using a microwave assisted heating method in alkaline media. Stable dispersion of β-CD stabilized AuNPs was obtained at an optimized pH of 10,5. At this pH value the deprotonated secondary hydroxyl group of β-CD shows the highest chelating affinity toward Pb2＋ ions thereby inducing AuNP aggregation. The Pb2＋ induced aggregation in β-CD-AuNP solution is monitored by both colorimetric response and UV-Vis spectroscopy. TEM, DLS and FTIR analyses were carried out to confirm the Pb2＋ ion induced aggregation behaviour of β-CD-AuNPs under alkaline conditions. Furthermore at the experimental pH the response of the β-CD-AuNP system towards Pb2＋ ions is selective when compared with other interfering metal cations.

关键词： gold nanoparticle (AuNP) β-cyclodextrin (β-CD) colorimetric detection,metal ion

Effects of various parameters on the attrition of bed material in a recirculating fluidized bed with a draft tube

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Particuology 2018年第3期16卷 61-70页

作者： Shivali Chourasia babu J. Alappat Department of Civil Engineering Indian Institute of Technology Delhi Hauz Khas New Delhi 110016 India

We performed an experimental study to investigate the effects of various parameters on the attrition of bed material and its size distribution with increasing operation time in a recirculating fluidized bed （RCFB）. The studied parameters included superficial velocity of fluidizing air, bed inventory, and spacing between the jet top and draft tube bottom （spacer height）. The bed material was prepared from Indian Standard （IS） Grade I sand from sieves with a size range of 2.20-1.00 mm. Experiments were performed at ambient conditions, with the superficial air velocity ranging from 7.13-9.16 m/s, a bed inventory of 7-10 kg, spacing of 0.085 and 0.045 m between the jet top and draft tube bottom, and an operating time of 40 h. We investigated the influence of these parameters in terms of changes in the size distribution of particles, changes in the %-weight of particles of different size ranges, generation of particles with smaller diameters, the decrease of the downcomer bed height, variations in the coefficient of uniformity and coefficient of curvature, and material loss from entrainment of fines with increasing operation time. The mode of attrition was abrasion in all experiments. We found that with increasing operation time and other parameters （bed inventory, superficial air velocity, and spacer height） attrition of the bed material also increased. Generation and elutriation of fines were more pronounced at higher superficial air velocity, bed inventory, and spacer height.

关键词： Attrition Recirculating fluidized bed (RCFB) Fluidization Elutriation Fines

Theoretical prediction and validation of global horizontal solar irradiance for a tropical climate in India

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Frontiers in Energy 2015年第3期9卷 311-321页

作者： Sivasankari SUNDARAM Jakka SARAT CHANDRA babu Department of Chemical Engineering National Institute of Technology Tiruchirappalli 620015 India

This paper aims to propose monthly models responsible for the theoretical evaluation of the global horizontal irradiance of a tropical region in India which is Sivagangai situated in Tamilnadu. The actual measured global horizontal irradiance hails from a 5 MW solar power plant station located at Sivagangai in Tamilnadu. The data were monitored from May 2011 to April 2013. The theoretical assessment was conducted differently by employing a programming platform called Microsoft Visual Basic 2010 Express. A graphical user interface was created using Visual Basic 2010 Express, which provided the evaluation of empirical parameters for model formulation such as daily sunshine duration （5）, maximum possible sunshine hour duration （S0）, extra terrestrial horizontal global irradiance （H0） and extra terrestrial direct normal irradiance （G0）. The proposed regression models were validated by the significance of statistical indicators such as mean bias error, root mean square error and mean percentage error from the predicted and the actual values for the region considered. Comparison was made between the proposed monthly models and the existing normalized models for global horizontal irradiance evaluation.

关键词： global horizontal irradiance (GHI) mean biaserror root mean square error mean percentage error,coefficient of regression Visual Basic 2010 Express

Weibull Probability Model for Fracture Strength of Aluminium (1101)-Alumina Particle Reinforced Metal Matrix Composite

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Journal of Materials Science & Technology 2009年第3期25卷 341-343页

作者： A. Suresh babu V. Jayabalan Department of Manufacturing Engineering Anna University

In recent times, conventional materials are replaced by metal matrix composites （MMCs） due to their high specific strength and modulus. Strength reliability, one of the key factors restricting wider use of composite materials in various applications, is commonly characterized by Weibull strength distribution function. In the present work, statistical analysis of the strength data of 15% volume alumina particle （mean size 15 um） reinforced in aluminum alloy （1101 grade alloy） fabricated by stir casting method was carried out using Weibull probability model. Twelve tension tests were performed according to ASTM B577 standards and the test data, the corresponding Weibull distribution was obtained. Finally the reliability of the composite behavior in terms of its fracture strength was presented to ensure the reliability of composites for suitable applications. An important implication of the present study is that the Weibull distribution describes the experimentally measured strength data more appropriately.

关键词： Weibull distribution Fracture strength Metal matrix composite

Hybrid, Optimal, Intelligent and Classical PV MPPT Techniques: A Review

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CSEE Journal of Power and Energy Systems 2021年第1期7卷 9-33页

作者： Ratnakar babu Bollipo Suresh Mikkili Praveen Kumar Bonthagorla Department of Electrical and Electronics Engineering National Institute of Technology GoaFARMAGUDIPondaGoa 403401India

Renewable energy-based solar photovoltaic(PV)generation is the best alternative for conventional energy sources because of its natural abundance and environment friendly *** power extraction from the PV system plays a critical role in increasing the efficiency of the solar power generation during partial shading conditions(PSCs).Therefore,a suitable maximum power point tracking(MPPT)technique to track the maximum power point(MPP)is of high need,even under *** paper presents an organized and concise review of MPPT techniques implemented for the PV systems in literature along with recent publications on various hardware design *** classification is done into four categories,***,intelligent,optimal,and hybrid depending on the tracking algorithm utilized to track MPP under *** uniform insolation,classical methods are highly preferred as there is only one peak in the P-V ***,under PSCs,the F-V curve exhibits multiple peaks,one global maximum power point(GMPP)and remaining are local maximum power points(LMPP’s).Under the PSCs,classical methods fail to operate at GMPP and hence there is a need for more advanced MPPT *** MPPT technique has its advantages and limits,but a streamlined MPPT is drafted in numerous parameters like sensors required,hardware implementation,cost viability,tracking speed and tracking *** study provides the advancement in this area since some parameter comparison is made at the end of every classification,which might be a prominent base-rule for picking the most gainful sort of MPPT for further research.

关键词： GMPP MPPT classification MPPT techniques partial shading conditions(PSCs) photovoltaic system

Texture coefficient and band gap tailoring of Fe-doped SnO_(2) nanoparticles via thermal spray pyrolysis

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Rare Metals 2022年第4期41卷 1332-1341页

作者： Majibul Haque babu Bidhan Chandra Dev Jiban Podder Department of Physics Bangladesh University of Engineering and TechnologyDhaka 1000Bangladesh

An investigation of Fe-doping effect on SnO_(2) thin films was performed in this study using thermal spray pyrolysis(TSP) *** surface morphology and structural,optical and electrical properties were studied by field energy scanning electron microscope(FESEM),X-ray diffraction(XRD),ultraviolet-visible(UV-Vis) spectroscopy and four-point probe *** EM images demonstrate that the surface morphology of the as-deposited films varies when Fe-doping content *** studies reveal that crystallite size and preferential growth orientations of the films are dependent on Fe-doping *** grain size is found to decrease with the increase in Fe *** studies also specify that the films have tetragonal rutile-type structure with mixed secondary *** texture coefficient value of(110) plane increases with the concomitant in-plane(220) decrease in higher doping *** resistivity and the optical absorbance are found to increase with Fe *** direct optical band gap decreases from 3.94 to3.52 eV with increasing Fe content.

关键词： SnO_(2)thin film Thermal spray pyrolysis Texture coefficient Optical band gap

Deciphering the role of transforming growth factor-beta 1 as a diagnostic-prognostic-therapeutic candidate against hepatocellular carcinoma

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World Journal of Gastroenterology 2022年第36期28卷 5250-5264页

作者： aswathy R Devan Keechilat Pavithran Bhagyalakshmi Nair Maneesha Murali Lekshmi R Nath Department of Pharmacognosy Amrita School of PharmacyAmrita Vishwa VidyapeethamAIMS Health Science CampusKochi 682041KeralaIndia Department of Medical Oncology and Hematology Amrita Institute of Medical Sciences and Research CentreAmrita Vishwa VidyapeethamKochi 682041KeralaIndia

Transforming growth factor-beta(TGF-β)is a multifunctional cytokine that performs a dual role as a tumor suppressor and tumor promoter during cancer *** different ligands of the TGF-βfamily,TGF-β1 modulates most of its biological *** the abundant expression of TGF-β1 in the liver,steatosis to hepatocellular carcinoma(HCC)progression triggers elevated TGF-β1 levels,contributing to poor prognosis and ***,elevated TGF-β1 levels in the tumor microenvironment create an immunosuppressive stage via various ***-β1 has a prime role as a diagnostic and prognostic biomarker in ***,TGF-β1 is widely studied as a therapeutic target either as monotherapy or combined with immune checkpoint *** review provides clinical relevance and up-to-date information regarding the potential of TGF-β1 in diagnosis,prognosis,and therapy against HCC.

关键词： Transforming growth factor-beta 1 Inflammation Immunosuppression Fibrogenesis Hepatocellular carcinoma Biomarker Immunotherapy