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Understanding the Effect of Zinc Oxide(ZnO)With Carbon Black Coupling Agent on Physico-Mechanical Properties in Natural Rubber Matrix

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Organic Polymer Material Research 2022年第2期4卷 15-25页

作者： Koushik Pal Koushik Banerjee soumya ghosh chowdhury Sanjay Kumar Bhattacharyya Rabindra Mukhopadhyay Hari Shankar Singhania Elastomer and Tyre research Institute Plot No.437Hebbal Industrial AreaMysoreKarnataka570016India

Natural rubber(NR)is not only the main compounding ingredient used to make the majority of components of tires as well as other rubber products,as it plays a significant role in ensuring that they operate well and complies with environmental *** applications of NR products are lim-ited to high temperatures due to the revision tendency of NR *** address these issues,the potential engagement of a carbon black(CB)coupling agent(CA)in the presence of metal oxide *** Oxide(ZnO)was investigated in an NR-based *** CA has dual functionality on physicomechanical *** has the ability to reduce hysteresis loss as well as improve anti-reversion properties and these properties thorough-ly depend on the presence of *** ZnO was added to the master formulation,a 65%improvement in reversion properties was *** the other hand,while ZnO fully transferred to the final formulation,bound rubber(BR)content increased by 19%,the difference in storage modulus(ΔG’)is reduced by 22%,cure rate index(CRI)improved by 14%,loss tangent(tanδ)reduced by 18%and slightly improve in elongation at break compared to control ***-gravimetric analysis(TGA)was engaged to understand the thermal stability and degree of purity of CA.A differential Scanning Calorimeter(DSC)was used to detect the phase tran-sition of *** Transform Infrared Spectrum(FTIR)was adopted to detect the presence of carboxyl and amine groups in the CA *** effect,BR content and Transmission Electron Microscope(TEM)were em-ployed to investigate the micro-level dispersion of CB in the natural rubber(NR)matrix.

关键词： Carbon black Natural rubber Carbon black coupling agent Anti-reversion properties

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Data-Driven Approaches for Spatio-Temporal Analysis:A Survey of the State-of-the-Arts

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Journal of Computer Science & Technology 2020年第3期35卷 665-696页

作者： Monidipa Das soumya K.ghosh School of Computer Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Department of Computer Science and Engineering Indian Institute of Technology KharagpurKharagpur 721302India

With the advancement of telecommunications,sensor networks,crowd sourcing,and remote sensing technology in present days,there has been a tremendous growth in the volume of data having both spatial and temporal *** huge volume of available spatio-temporal(ST)data along with the recent development of machine learning and computational intelligence techniques has incited the current research concerns in developing various data-driven models for extracting useful and interesting patterns,relationships,and knowledge embedded in such large ST *** this survey,we provide a structured and systematic overview of the research on data-driven approaches for spatio-temporal data *** focus is on outlining various state-of-the-art spatio-temporal data mining techniques,and their applications in various *** start with a brief overview of spatio-temporal data and various challenges in analyzing such data,and conclude by listing the current trends and future scopes of research in this multi-disciplinary *** with other relevant surveys,this paper provides a comprehensive coverage of the techniques from both computational/methodological and application *** anticipate that the present survey will help in better understanding various directions in which research has been conducted to explore data-driven modeling for analyzing spatio-temporal data.

关键词： data-driven modeling spatio-temporal data prediction change pattern detection outlier detection hotspot detection partitioning/summarization (tele-)coupling visual analytics

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Design of a Robust Optimal Decentralized PI Controller Based on Nonlinear Constraint Optimization For Level Regulation: An Experimental Study

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IEEE/CAA Journal of Automatica Sinica 2020年第1期7卷 187-199页

作者： soumya Ranjan Mahapatro Bidyadhar Subudhi Sandip ghosh Department of Electrical Engineering National Institute of Technology RourkelaRourkela 769008India School of Electrical Sciences Indian Institute of TechnologyFarmagudiGoa 403401India Department of Electrical Engineering Indian Institute of TechnologyVaranasi 221005India

This paper presents the development of a new robust optimal decentralized PI controller based on nonlinear optimization for liquid level control in a coupled tank system. The proposed controller maximizes the closed-loop bandwidth for specified gain and phase margins, with constraints on the overshoot ratio to achieve both closed-loop performance and robustness. In the proposed work, a frequency response fitting model reduction technique is initially employed to obtain a first order plus dead time(FOPDT) model of each higher order subsystem. Furthermore, based on the reduced order model, a proposed controller is designed. The stability and performance of the proposed controller are verified by considering multiplicative input and output uncertainties. The performance of the proposed optimal robust decentralized control scheme has been compared with that of a decentralized PI controller. The proposed controller is implemented in real-time on a coupled tank system. From the obtained results,it is shown that the proposed optimal decentralized PI controller exhibits superior control performance to maintain the desired level, for both the nominal as well as the perturbed case as compared to a decentralized PI controller.

关键词： Decentralized control multivariable system process control parameter uncertainty robustness

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Sustainability of metal recovery from E-waste metal recovery sustainability

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Frontiers of Environmental Science & Engineering 2018年第6期12卷 15-26页

作者： Biswajit Debnath Ranjana chowdhury Sadhan Kumar ghosh Department of Chemical Engineering Jadavpur UniversityKolkata 700032India Department of Mechanical Engineering Jadavpur UniversityKolkata 700032India

Metal recovery techniques from electronic waste reported in literature. Metal recovery processes followed in Industries from electronic waste. Sustainability analysis of metal recovery processes from electronic waste.

关键词： E-waste Metal recovery Metal Recovery from E-waste (MREW) Sustainability

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Brewing and biochemical characterization of Camellia japonica petal wine with comprehensive discussion on metabolomics

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Food Production, Processing and Nutrition 2022年第1期4卷 366-382页

作者： soumya Majumder Arindam ghosh Sourav Chakraborty Malay Bhattacharya Molecular Biology and Tissue Culture Laboratory Department of Tea ScienceUniversity of North BengalSiliguriDarjeelingWest Bengal 734013India Postgraduate Department of Botany Darjeeling Government CollegeDarjeelingWest Bengal 734101India

A novel wine has been developed from Camellia japonica’s petal by fermenting the decoction with Saccharomyces cerevisiae or brewer’s yeast. pH, brix, specific gravity and alcohol percentage were tested to study the physicochemical properties of the wine. Qualitative tests indicated presence of phenols such as flavonoids, coumarins;protein;glyco-sides;glycerin;terpenoids;steroids;and fatty acids in the wine. Total phenol content was found high in the decoction and in its fermented form as well. In vitro biological activities such as antioxidant activity, antidiabetic activity and lipid peroxidation inhibition power were assessed in samples. Furthermore, GC-MS analysis helped to detect volatiles present in the unfermented decoction and understand the effect of fermentation on its changing metabolome while column chromatography assisted the separation of solvent-based fractions. Notable outcomes from this study were detection of bioactive compound quinic acid in the decoction and a proposed pathway of its metabolic breakdown after fermentation. Results of this research revealed biochemical and physicochemical acceptability of this wine prepared from an underutilized flower.

关键词： Camellia Quinic acid GC-MS Fermentation Wine

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Chaos and Periodicities in Solar Flare Index from Kandilli Observatory during 1976–2014

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Research in Astronomy and Astrophysics 2020年第7期20卷 177-186页

作者： soumya Roy Amrita Prasad Koushik ghosh Subhash Chandra Panja Sankar Narayan Patra Department of Applied Electronics and Instrumentation Engineering Haldia Institute of TechnologyHaldiaMidnapore(E)-721657West BengalIndia Department of Mechanical Engineering Jadavpur UniversityKolkata-700032West BengalIndia Department of Mathematics University Institute of TechnologyThe University of BurdwanBurdwan-713104West BengalIndia Department of Instrumentation and Electronics Engineering Jadavpur UniversityKolkata 700106West BengalIndia

The Solar Flare Index is regarded as one of the most important solar indices in the field of solarterrestrial research. It has the maximum effect on Earth of all other solar activity indices and is being considered for describing the short-lived dynamo action inside the Sun. This paper attempts to study the short as well as long-term temporal fluctuations in the chromosphere region of the Sun using the Solar Flare Index. The daily Solar Flare Index for Northern, Southern Hemisphere and Total Disk are considered for a period from January 1976 to December 2014(total 14 245 days) for chaotic as well as periodic *** 0–1 test has been employed to investigate the chaotic behavior associated with the Solar Flare *** test revealed that the time series data is non-linear and multi-periodic in nature with deterministic chaotic features. For periodic analysis, the Raleigh Power Spectrum algorithm has been used for identifying the predominant periods within the data along with their confidence score. The well-known fundamental period of 27 days and 11 years along with their harmonics are well affirmed in our investigation with a period of 28 days and 10.77 years. The presence of 14 days and 7 days periods in this investigation states the short-lived action inside the Sun. Our investigation also demonstrates the presence of other mid-range periods including the famous Rieger type period which are very much confirming the results obtained by other authors using various solar activity indicators.

关键词： chaos method:data analysis Sun:activity Sun:flares Sun:fundamental parameters Sun:rotation

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Production of fermented tea petal decoction with insights into in vitrobiochemical tests,antioxidant assay and GC-MS analysis

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Food Production, Processing and Nutrition 2021年第1期3卷 406-415页

作者： soumya Majumder Sumedha Saha Arindam ghosh Sukanya Acharyya Sahadeb Sarkar Sourav Chakraborty Malay Bhattacharya Molecular Biology and Tissue Culture Laboratory Department of Tea ScienceUniversity of North BengalSiliguriDarjeelingWest Bengal Pin-734013India

This research work was designed to attempt and propose the first report on production and biochemical characterization of fermented tea flower petal decoction or simply tea petal *** tea petal decoction and brewer’s yeast or Saccharomyces cerevisiae were co-cultured for *** activity and chromatographic separation of potential candidates were *** investigations for qualitative characters on this fermented broth revealed the presence of steroids,tannin,flavonoids,phenol,cardiac glycosides,coumarin,caffeine *** manufactured fermented broth showed high free radical scavenging activity after 2 months of *** DPPH scavenging activities were also observed in solvent fractions of acetone,ethanol and *** antioxidant activity,alcohol percentage and other qualities were seen to be gradually increased during *** chromatography-mass spectrometry analysis revealed the presence of 44 compounds including many potential antioxidant molecules and other bioactive ***,presence of alcohol with medicinally active compounds and antioxidant activity will make it as acceptable as a good wine and tea flower as economically functional.

关键词： Tea petal Antioxidant GC-MS Fermentation brewer’s yeast

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Bioactive nanotherapeutic trends to combat triple negative breast cancer

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Bioactive Materials 2021年第10期6卷 3269-3287页

作者： Pallabita chowdhury Upasana ghosh Kamalika Samanta Meena Jaggi Subhash C.Chauhan Murali M.Yallapu Department of Pharmaceutical Sciences University of Tennessee Health Science CenterMemphisTNUSA Department of Biomedical Engineering School of EngineeringRutgers UniversityThe State University of New JerseyPiscatawayNJ08854USA Department of Immunology and Microbiology School of MedicineUniversity of Texas Rio Grande ValleyMcAllenTXUSA South Texas Center of Excellence in Cancer Research School of MedicineUniversity of Texas Rio Grande ValleyMcAllenTXUSA

The management of aggressive breast cancer,particularly,triple negative breast cancer(TNBC)remains a formidable challenge,despite treatment *** newer therapies such as atezolizumab,olaparib,and sacituzumab can tackle the breast cancer prognosis and/or progression,but achieved limited survival benefit(s).The current research efforts are aimed to develop and implement strategies for improved bioavailability,targetability,reduce systemic toxicity,and enhance therapeutic outcome of FDA-approved treatment *** review presents various nanoparticle technology mediated delivery of chemotherapeutic agent(s)for breast cancer *** article also documents novel strategies to employ cellular and cell membrane cloaked(biomimetic)nanoparticles for effective clinical *** technologies offer a safe and active targeting nanomedicine for effective management of breast cancer,especially TNBC.

关键词： Breast cancer treatment Triple negative breast cancer Chemotherapy Nanoparticles Membrane cloaked nanoparticles Nanomedicine Biomimetic nanoparticles

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Direct choline administration in semi-intensive pisciculture system: A positive contaminant

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Emerging Contaminants 2021年第1期7卷 22-34页

作者： Subhas Das Sukhendu Dey Atanu Patra Arghya Mandal Niladri Sekhar Mondal Debnarayan chowdhury Koushik ghosh Apurba Ratan ghosh Ecotoxicology Laboratory Department of Environmental ScienceThe University of BurdwanBurdwanWest BengalIndia Panacea the Aqua Clinic(Aquaculture Laboratory Cum Training Centre)Galsi-II BlockPurba BardhamanDepartment of FisheriesGovt.of West BengalIndia Environmental Science Laboratory Department of Environmental ScienceNetaji Subhas Open UniversitySalt Lake CityWest BengalIndia Aquaculture Laboratory Department of ZoologyThe University of BurdwanBurdwanWest BengalIndia

Present work evaluated the possible impact of choline on metabolic enzymes of cultured fish species into a semi-intensive pond culture system,reared with Catla catla(catla),Labeo rohita(rahu),Clarias batracus(magur)and Anabas testudineus(climbing perch)for 90 days in two *** was added directly into the pond water periodically throughout the experimental *** water quality parameters of each experimental pond were monitored and were analyzed in 15 days interval throughout the experimental tenure in both the *** were compared with treatment as choline-fed and control as non-choline-fed conditions during breeding(June-Aug.)and dry(Nov.-Jan.)*** metabolic enzymes,viz.,LDH(Lactate dehydrogenase),MDH(Malate dehydrogenase),and G6PDH(Glucose-6-phosphate dehydrogenase)activities in the muscle,liver,and AchE(Acetylcholine esterase)activity in the brain and muscle revealed maximum significantly(p<0.01),but ALT(Alanine aminotransferase)and AST(Aspartate aminotransferase)activity showed significant(p<0.01)depletion in the muscle and liver in treatment-breeding(TB)*** fishes under treatment-dry(TD)condition presented significant(p<0.01)higher elevation in HK(Hexokinase)activity in the muscle and ***,the result of principal component analysis(PCA)depicted the positive as well as in some cases a negative correlation among the enzymatic activities both in dry and breeding ***,it can be inferred that choline enrichment in fishes can substantiate the well nutritionally balanced food-flesh for consumption under this farm culture and the choline behaved as a positive contaminant into the pond eco-system under the semi-intensive culture condition.

关键词： Choline Metabolic enzymes Principal component analysis Breeding and dry season

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Hydrogel-based materials as antibacterial agents and super adsorbents for the remediation of emerging pollutants:A comprehensive review

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Emerging Contaminants 2024年第3期10卷 46-67页

作者： Shabnam Ahmadi Sina Pourebrahimi Alhadji Malloum Majid Pirooz Christian Osagie soumya ghosh Muhammad Nadeem Zafar Mohammad Hadi Dehghani Department of Environmental Health Engineering Faculty of Medical SciencesTarbiat Modares UniversityPO Box 14115-111TehranIran Department of Chemical and Materials Engineering Concordia University7141 Sherbrooke Street WestMontrealQuebecH4B 1R6Canada Department of Physics Faculty of ScienceUniversity of MarouaPO Box 46MarouaCameroon Department of Chemistry University of the Free StatePO Box 3399300BloemfonteinSouth Africa Research and Development Division Pad Jam Polymer Development Company(PJPC)and Department of Chemical EngineeringUniversity of Isfahan81746-73441IsfahanIran Stochastics and Its Applications Brandenburg University of Technology Cottbus-SenftenbergPlatz der Deutschen Einheit 103046CottbusGermany Natural and Medical Sciences Research Center University of NizwaNizwa616Oman Department of Chemistry University of Gujrat50700GujratPakistan Department of Environmental Health Engineering School of Public HealthTehran University of Medical SciencesTehranIran Center for Solid Waste Research Institute for Environmental ResearchTehran University of Medical SciencesTehranIran

Hydrogels have various potential applications due to their unique characteristics and recently,hydrogels have been utilized as adsorbents in wastewater treatment because of their ability to remove contaminants from *** strong hydrogels with high adsorption capabilities is crucial for effective wastewater *** and researchers are working to improve the properties of hydrogels by incorporating inorganic elements into polymer networks,which further reduces the costs as well as simplifies their *** polymers like starch and alginate are widespread due to their economic and biological advantages,such as biodegradability,biocompatibility,reduced toxicity,environmental friendliness,and low *** adsorption of pollutants onto hydrogels as well as their use as antimicrobial agents has garnered significant *** review paper summarizes the latest studies on using hydrogels as adsorbents to remove endocrine-disrupting chemicals(EDCs),persistent organic pollutants(POPs),and other emerging pollutants from water environments along with their use as antimicrobial *** the first step,different classes of hydrogels and different characterization techniques have been *** antimicrobial potential of hydrogels is elaborated to understand how these hydrogels can be a potential candidate for such *** discussing the adsorption application of hydrogels,different isothermal,kinetics and thermodynamics models have been discussed to highlight the mechanism and nature of forces involved in adsorption of *** different simulations such as DFT and MD have been discussed to get more holistic understanding of pollutants adsorption onto hydrogels.A limited number of studies have utilized other techniques such as Monte Carlo simulations and computational fluid dynamics(CFD)so it is important to explore a variety of computational methods to gain a comprehensive understanding of the adsorption process o

关键词： Hydrogel Emerging pollutant Adsorption Water and wastewater Monte Carlo simulations Antimicrobial activity

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