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LaNiO_(3)/g-C_(3)N_(4) nanocomposite:An efficient Z-scheme photocatalyst for wastewater treatment using direct sunlight

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Journal of Rare Earths 2022年第5期40卷 725-736,I0002页

作者： Kalyan Ghorai Atanu Panda Akbar Hossain Monotosh Bhattacharjee Malay Chakraborty Swapan Kumar Bhattacharya Bibhutibhushan Show Abhimanyu Sarkar parthasarathi bera Hansang Kim Md.Motin Seikh Arup Gayen Department of Chemistry Jadavpur UniversityKolkata 700032India Department of Mechanical Engineering Gachon UniversitySungnam 13120Republic of Korea Surface Engineering Division CSIR-National Aerospace LaboratoriesBengaluru 560017India Department of Chemistry Visva-BharatiSantiniketan 731235India

The major findings in this report are(ⅰ)development of nanocomposite photocatalyst working through Z-scheme charge transfer pathway across the heterojunction,(ⅱ)utilization of direct sunlight as the photo-source,and(ⅲ)prospect of ligand-hole in photocatalysis through enhanced sub-band gap absorption,The photocatalysts,namely LaNiO_(3),g-C_(3)N_(4) and LaNiO_(3)/g-C_(3)N_(4) nanocomposites were synthesized via facile route and were characterized for their structure,morphology,microstructure,texture,elemental mapping and surface oxidation states by using several physicochemical *** photocatalytic performance of the nanocomposite was tested through the degradation of hazardous azo dye pollutants,namely reactive black 5 and methylene blue as well as the colorless antibiotic-pollutant tetracycline hydrochloride in aqueous solution in presence of natural sunlight with excellent recycling *** 10%LaNiO_(3)/g-C_(3)N_(4) nanocomposite sample shows the best catalytic activity,degrading respectively 94%,98.6%and 88.1%of reactive black 5,methylene blue and tetracycline hydrochloride in60,180 and 120 *** photocatalytic activity of the nanocomposite phase is several times superior to that of the pure *** improvements of photocatalytic activity of g-C_(3)N_(4) in the nanocomposite have been rationalized through the construction of direct Z-scheme heterojunction and suppression of electron-hole pair recombination *** enhanced photo-absorption of the nanocomposite can possibly be related to sub-bandgap absorption,which is associated to the midgap state originating from ligand-hole formation or defects in the *** photodegradation process is mediated through the formation of super oxide radical(O_(2))and hole(h^(+))as the main responsible species.

关键词： LaNiO_(3)/g-C_(3)N_(4)nanocomposite Direct Z-scheme photocatalyst Natural sunlight Reactive black 5 Methylene blue Tetracycline hydrochloride

Decision Tree Based Key Management for Secure Group Communication

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Computer Systems Science & Engineering 2022年第8期42卷 561-575页

作者： P.parthasarathi S.Shankar Department of Computer Science and Engineering Bannari Amman Institute of TechnologySathyamangalam638401India Department of Computer Science and Engineering Hindusthan College of Engineering and TechnologyCoimbatore641032India

Group communication is widely used by most of the emerging network applications like telecommunication,video conferencing,simulation applications,distributed and other interactive *** group communication plays a vital role in case of providing the integrity,authenticity,confidentiality,and availability of the message delivered among the group members with respect to communicate securely between the inter group or else within the *** secure group communications,the time cost associated with the key updating in the proceedings of the member join and departure is an important aspect of the quality of service,particularly in the large groups with highly active ***,the paper is aimed to achieve better cost and time efficiency through an improved DC multicast routing protocol which is used to expose the path between the nodes participating in the group *** this process,each node constructs an adaptive Ptolemy decision tree for the purpose of generating the contributory *** of the node is comprised of three keys which will be exchanged between the nodes for considering the group key for the purpose of secure and cost-efficient group *** rekeying process is performed when a member leaves or adds into the *** performance metrics of novel approach is measured depending on the important factors such as computational and communicational cost,rekeying process and formation of the *** is concluded from the study that the technique has reduced the computational and communicational cost of the secure group communication when compared to the other existing methods.

关键词： Key generation adaptive Ptolemy decision tree cost reduction secure group communication

Muskingum equation based downstream sediment flow simulation models for a river system

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International Journal of Sediment Research 2016年第2期31卷 139-148页

作者： Briti Sundar Sil parthasarathi Choudhury Department of Civil Engineering Tezpur University Department of Civil Engineering NIT Silchar

Applications of sediment transport and water flow characteristics based sediment transport simulation models for a river system are presented in this *** existing water-sediment model and a new sediment-water model are used to formulate the simulation models representing water and sediment movement in a river *** sediment-water model parameters account for water flow characteristics embodying sediment transport properties of a *** models are revised formulations of the multiple water inflows model describing water movement through a river system as given by the Muskingum *** models are applied to a river system in Mississippi River basin to estimate downstream sediment concentration,sediment discharge,and water *** system and the river section parameters are estimated using a revised and the original multiple water inflows models by applying the genetic *** models estimate downstream sediment transport rates on the basis of upstream sediment/water flow rates to a *** performance is evaluated by using standard statistical criteria;downstream water discharge resulting from the original multiple water inflows model using the estimated river system parameters indicate that the revised models satisfactorily describe water movement through a river *** obtained in the study demonstrate the applicability of the sediment transport and water flow characteristics-based simulation models in predicting downstream sediment transport and water flow rates in a river system.

关键词： Multiple rivers Sediment transport Modeling Estimation Muskingum model

Impact of preterm birth and low birth weight on medical conditions, medication use and mortality among neonates: a prospective observational cohort study

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World Journal of Pediatrics 2019年第3期15卷 281-288页

作者： Krishna Undela Bashar Talal Saad Mohammed parthasarathi Gurumurthy Srinivasa Murthy Doreswamy Department of Pharmacy Practice JSS College of Pharmacy.JSS Academy of Higher Education and ResearchSS NagaraMysuru.Karnataka 570 015.India Department of Pediatrics JSS Medical College and Hospital.JSS Academy of Higher Education and ResearchMahatma Gandhi RoadMysuruKarnataka 570 004India

Background There is a paucity of studies conducted in India on neonatal outcomes of preterm birth and low birth ***,we aimed to assess the impact of preterm birth and low birth weight on medical conditions,medication use and mortality among *** A prospective observational cohort study was conducted at the neonatal intensive care unit (NICU) over a period of 9 *** of either sex,admitted to NICU and who received at least one medication were enrolled in the *** and demographic data,reason(s) for NICU admission,diagnoses,medications prescribed,medication-related problems,discharge status and the direct medical cost were documented and *** Four hundred and five neonates Were included in the study:60.5% were boys,32.7% were preterm and 44.2% were born *** sepsis (n =125,16.7%),unconjugated hyperbilirubinemia (n =83,11.1%) and respiratory distress syndrome (n =62,8.3%) were the most common medical conditions and were significantly more common among preterm and underweight *** half of the medications prescribed were anti-infectives for systemic use (n =1310,47.4%).The mean number of medications received by neonates increased from term to extremely preterm (5.2-15.0) and normal birth weight to extremely low birth weight (5.0-14.9).Mortality rate was significantly higher among extremely preterm (66.7%),and very preterm (15.2%) neonates compared to term (2.9%) *** median direct medical cost for NICU admission was INR 21,430 (USD 331).Conclusion Medical conditions,medications prescribed and mortality rate were significantly higher among preterm and underweight neonates admitted to NICU.

关键词： Low birth weight Medical conditions Medications Mortality Preterm birth

Strain Limit of Extra Galvannealed Interstitial-Free and Bake Hardened Steel Sheets Under Different Stress Conditions

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Journal of Iron and Steel Research International 2008年第5期15卷 56-60页

作者： R Narayanasamy N L parthasarathi R Ravindran C Sathiya Narayanan Department of Production Engineering National Institute of TechnologyTiruchirappalli 620015TamilnaduIndia

The formability of bake hardened steel （thickness 0.82 mm）, and the extra galvannealed IF steel （thickness 0.82 mm） have been studied. The suitability of the above steels for forming applications has been critically examined. The microstructure, tensile properties, and formability parameters of the above sheet metals were determined. The manufacturing process of the steels and the significance with reference to its formability were studied.

关键词： bake hardened steel extra galvannealed IF steel microstructure forming limit diagram tensile parameter

Hypothetical mode of action of earthworm extract with hepatoprotective and antioxidant properties

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第2期9卷 141-147页

作者： Mariappan BALAMURUGAN Kasi parthasarathi Lalpet Souri RANGANATHAN Edwin L. COOPER Division of Vermibiotechnology Department of Zoology Annamalai University Annamalai Nagar-608002 India VLB Janakiammal College of Arts and Science Kovaipudur Coimbatore-641042 India Laboratory of Comparative Immunology Department of Neurobiology UCLA Medical Centre University of California Los Angeles California 90095-1763 USA

The hepatoprotective potential of earthworm extract (EE) (Lampito mauritii, Kinberg) was evaluated against paracetamol-induced liver injury in Wistar albino rat, in comparison with silymarin, the standard hepatoprotective drug. We observed a reduction in liver antioxidants, such as glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT) and in serum total protein, and an increase in serum alkaline phosphatase (ALP), serum aspertate aminotranferase (AST), serum alanine aminotranferase (ALT), bilirubin and liver thiobarbituric acid reactive substances (TBARS) due to liver injury in the paracetamol-administered rats (2 g/kg). On the contrary, increased activities of liver GSH, SOD, GPx, CAT and serum total protein level, and decrease in the contents of serum ALP, AST, ALT, bilirubin and liver TBARS were observed in rats administered with different doses of EE (100, 200 and 300 mg/kg), which are similar to the activities of hepato-protective drug silymarin (150 mg/kg). The mode of action of EE as evidenced by the above parameters may suggest that EE, on the one hand, prevents the formation of the reactive oxygen groups, or scavenges these groups, thereby preventing the damage on the hepatic cells, and, on the other hand, modulates the genes responsible for synthesis of antioxidant enzymes such as GPx, CAT and SOD in liver tissue and decreases the serum enzymatic activities such as ALP, AST and ALT.

关键词： Earthworm extract Hepatoprotective potential Antioxidant Paracetamol Lipid peroxidation

Solid and liquid state characterization of tetrahydrocurcumin using XRPD, FT-IR, DSC, TGA, LC-MS, GC-MS, and NMR and its biological activities

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Journal of Pharmaceutical Analysis 2020年第4期10卷 334-345页

作者： Mahendra Kumar Trivedi parthasarathi Panda Kalyan Kumar Sethi Mayank Gangwar Sambhu Charan Mondal Snehasis Jana Trivedi Global Inc. Henderson89052NevadaUSA Trivedi Science Research Laboratory Pvt.Ltd. Thane(W)-400604MaharashtraIndia

Tetrahydrocurcumin(THC)is one of the major metabolites of curcumin(CUR),an ancient bioactive natural polyphenolic *** research article describes both the solid and liquid state characterization of THC using advanced spectroscopic and thermo-analytical ***-inflammatory,anti-oxidant,and neuroprotective activities of THC were investigated using in vitro cell *** chromatography-mass spectrometry analysis revealed that our sample comprised 95.15%THC,0.51%tetrahydrodemethoxycurcumin(THDC),3.40%hexahydrocurcumin,and 0.94%*** chromatography-mass spectrometry analysis indicated the presence of 96.68%THC and 3.32%*** in solution existed as keto-enol tautomers in three different forms at different retention time,but the enol form was found to be dominant,which was also supported by nuclear magnetic resonance *** was thermally stable up to 335.55*** exhibited more suppression of cytokines(TNF-a,IL-1b,and MIP-1a)than CUR in a concentration-dependent manner in mouse splenocytes,while NK-cell and phagocytosis activity was increased in *** showed a significant reduction of free radicals(LPO)along with improved antioxidant enzymes(SOD and catalase)and increased free radical scavenging activity against ABTSt radicals in HepG2 *** displayed higher protection capability than CUR from oxidative stress and neuronal damage by improving cell viability against H2O2 induced HepG2 cells and MPPt induced SH-SY5Y cells,respectively,in a concentration-dependent ***,a variation of the biological activities of THC might rely on its keto-enol form and the presence of other THC analogs as *** present study could be advantageous for further research on THC for better understanding its physicochemical properties and biological variation.

关键词： Tetrahydrocurcumin Liquid chromatography-mass spectrometry Spectroscopic and thermal analysis Keto-enol tautomer Anti-inflammatory Antioxidant

Hybrid Smart Contracts for Securing IoMT Data

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Computer Systems Science & Engineering 2023年第1期44卷 457-469页

作者： D.Palanikkumar Adel Fahad Alrasheedi P.parthasarathi S.S.Askar Mohamed Abouhawwash Department of Computer Science and Engineering Dr NGP Institute of TechnologyCoimbatore641048India Department of Statistics and Operations Research College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia Department of Computer Science and Engineering Bannari Amman Institute of TechnologySathy638401India Department of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt Department of Computational Mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast LansingMI48824USA

Data management becomes essential component of patient *** of Medical Things(IoMT)performs a wireless communication between E-medical applications and human *** of consulting a doctor in the hospital,patients get health related information remotely from the *** main issues in the E-Medical application are lack of safety,security and priv-acy preservation of patient’s health care *** overcome these issues,this work proposes block chain based IoMT Processed with Hybrid consensus protocol for secured *** health data is collected from physician,smart devices *** main goal is to store this highly valuable health related data in a secure,safety,easy access and less cost-effective *** this research we combine two smart contracts such as Practical Byzantine Fault Tolerance with proof of work(PBFT-PoW).The implementation is done using cloud technology setup with smart contracts(PBFT-PoW).The accuracy rate of PBFT is 90.15%,for PoW is 92.75%and our proposed work PBFT-PoW is 99.88%.

关键词： PoW byzantine fault tolerance IoMT cloud computing health care data

Revisiting the Computation of Cohomology Classes of the Witt Algebra Using Conformal Field Theory and Aspects of Conformal Algebra

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Journal of Applied Mathematics and Physics 2019年第3期7卷 567-590页

作者： Jacksyn Bakeberg parthasarathi Nag Department of Mathematics and Statistics McGill University Montréal Québec Canada School of Mathematics and Social Sciences Black Hills State University Spearfish South Dakota USA

In this article, we revisit some aspects of the computation of the cohomology class of H2 (Witt, C)?using some methods in two-dimensional conformal field theory and conformal algebra to obtain the one-dimensional central extension of the Witt algebra to the Virasoro algebra. Even though this is well-known in the context of standard mathematical physics literature, the operator product expansion of the energy-momentum tensor in two-dimensional conformal field theory is presented almost axiomatically. In this paper, we attempt to reformulate it with the help of a suitable modification of conformal algebra (as developed by V. Kac), and apply it to compute the representative element of the cohomology class which gives the desired central extension. This paper was written in the scope of an undergraduate’s exploration of conformal field theory and to gain insight on the subject from a mathematical perspective.

关键词： Conformal Field Theory Conformal Algebra Witt Algebra Central Extension Virasoro Algebra