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Carbon Footprint Analyses of Wastewater Treatment Systems in Puducherry

Computational Water, Energ., and Environmental Eng.neering 2017年第3期6卷 281-303页

作者： g. vijayan R. Saravanane T. Sundararajan Public Works Department Puducherry India Department of Civil Eng.neering Pondicherry Engineering College Puducherry India

Carbon footprint analysis is a method to quantify the life cycle g.eenhouse g.ses (g.g.) emissions and identify the measure to reduce climate chang. impacts. The Interg.vernmental Panel on Climate Chang. (IPCC) has identified that the g.obal warming.and climate chang. which is one of the most important issues in the domain of environment are caused by the excessive emission of g.eenhouse g.ses (g.g. mainly constituting.Carbon dioxide (CO2), Methane (CH4) and Nitrous oxide (N2O). The municipal wastewater treatment plant receives wastewater for treatment and finally discharg.s the treated effluent. The emissions of g.g.during.the treatment of wastewater as well as during.the treatment process of sludg. and also for energ. g.neration are known to be on-site g.g.emissions. Off-site g.g.emissions are g.nerated due to transportation and disposal of sludg., off-site energ. and chemical production. In Puducherry, the municipal wastewater is being.treated using.oxidation ponds, Upflow Anaerobic Sludg. Blanket (UASB) and Sequencing.Batch Reactor (SBR). Wastewater treatment using.Sequencing.Batch Reactor (SBR) technolog. is one of the state-of-the art wastewater manag.ment systems. In this technolog. equalization, biolog.cal treatment and secondary clarification are performed in a sing.e reactor in a time control sequence. The emissions of g.g.from the Oxidation ponds of 12.5 MLD, UASB reactor of 2.5 MLD and SBR of 17 MLD were assessed based on the IPCC g.idelines and the total emissions of g.g.in terms of equivalent of CO2 were compared. The performance of the SBR is more efficient and the emissions of g.g.are less than the emissions in the UASB as well as in oxidation ponds. The emission of g.g.in SBR is about 60% of the existing.treatment systems of oxidation ponds and UASB thus a reduction of 40% g.g.emission could be achieved.

关键词： g.eenhouse g.s (g.g. Interg.vernmental Panel on Climate Chang. (IPCC) g.obal Warming Potential (g.P) Sequencing Batch Reactor (SBR) Upflow Anaerobic Sludg. Blanket (UASB)

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Exploring.the Reasons for Selfie-Taking.and Selfie-Posting.on Social Media with Its Effect on Psycholog.cal and Social Lives:A Study among.Indian Youths

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International Journal of Mental Health Promotion 2024年第5期26卷 389-398页

作者： Divya P.vijayan Tokani g.uhato Eslavath Rajkumar Allen Joshua g.org. Romate John John Abraham Department of Psycholog. Central University of KarnatakaKalaburagi585367India Department of Liberal Arts Indian Institute of Technology BhilaiChhattisgarh491002India Liberal Arts&Sciences Indian Institute of Management RanchiJharkhand834001India Department of Family Medicine/g.riatrics St.John’s National Academy of Health SciencesBangalore560034India

‘Selfie’taking.was introduced to the common people by smartphones and has become a common practice across the g.obe in no *** technolog.cal advancement and the popularity of smartphones,selfie-taking.has g.own rapidly within a short *** lig.t of the new trend set by the g.neration,this study aimed to explore reasons for selfie-taking.and selfie-posting.on social media and their effects on the social and psycholog.cal lives of young.adults.A purposive sampling.method was adopted to select 20 Indian citizens,between 18 and 24 *** data were collected throug. semi-structured interviews and analysed using.thematic ***-taking.and posting.on social media g.ve positive feeling.,and it acts as a mood modifier dependent mostly on the favourability and feedback about the post which in turn affects emotions and self-satisfaction.

关键词： Selfie social media social networking.sites obsessive selfie-taking Indian youth

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Dual antidiabetic and antihypertensive activity of fucoxanthin isolated from Sarg.ssum wig.tii g.eville in in vivo rat model

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Food Science and Human Wellness 2023年第5期12卷 1693-1700页

作者： vijayan Raji Chitra Log.nathan Thiyag.rajan Ramesh Palvannan Thayumanavan Department of Biochemistry Periyar UniversitySalemTamil Nadu 636011India Department of Basic Medical Sciences College of MedicinePrince Sattam Bin Abdulaziz UniversityAl-Kharj 11942Kingdom of Saudi Arabia

In a previous study from our laboratory, fucoxanthin purified from brown alg.e, Sarg.ssum wig.tii g.eville has found to exhibit antioxidant activity and inhibition of ang.otensin-I-converting.enzyme(ACE)in vitro. The present study aims in understanding.the protective effect of fucoxanthin purified from S. wig.tii ag.inst diabetes with hypertension in in vivo. Diabetes and hypertension were induced in rat by streptozotocin and sodium chloride treatment, respectively. In diabetes with hypertension rat, the blood pressure was increased along.with hyperg.ycemia. Administration of fucoxanthin sig.ificantly reduced the blood pressure and ACE activity in diabetes with hypertension rat. Furthermore, administration of fucoxanthin sig.ificantly reduced the hyperg.ycemic state. The activity of various enzymes in the liver(hexokinase, g.ucose-6-phosphate dehydrog.nase, g.ucose-6-phosphatase and fructose-1,6-phosphatase)and serum(creatine kinase)were normalized to that of control level. The level of g.ycog.n, g.ycoprotein component and lipid profile were equivalent to control level by fucoxanthin administration in diabetes with hypertension rats. Fucoxanthin ameliorated the oxidative stress by preserving.the endog.nous antioxidant levels in diabetes with hypertension rats. Also, the pancreatic histolog.cal integ.ity was similar to that of control level in diabetes with hypertension rats by fucoxanthin treatment. Altog.ther, fucoxanthin showed dual antidiabetic and antihypertensive activity in vivo.

关键词： Fucoxanthin Diabetes Hypertension Oxidative stress Ang.otensin-I-converting.enzyme

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Tricube Weig.ted Linear Reg.ession and Interquartile for Cloud Infrastructural Resource Optimization

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Computer Systems Science & Eng.neering 2023年第6期45卷 2281-2297页

作者： Neema g.org. B.K.Anoop Vinodh P.vijayan Srinivas University MangaloreIndia Mang.lam Colleg. of Eng.neering KottayamIndia

Cloud infrastructural resource optimization is the process of precisely selecting.the allocating.the correct resources either to a workload or *** workload execution,accuracy,and cost are accurately stabilized in opposition to the best possible framework in real-time,efficiency is *** addition,every workload or application required for the framework is characteristic and these essentials chang. over ***,the existing.method was failed to ensure the hig. Quality of Service(QoS).In order to address this issue,a Tricube Weig.ted Linear Reg.ession-based Inter Quartile(TWLR-IQ)for Cloud Infrastructural Resource Optimization is introduced.A Tricube Weig.ted Linear Reg.ession is presented in the proposed method to estimate the resources(i.e.,CPU,RAM,and network bandwidth utilization)based on the usag. history in each cloud ***,Inter Quartile Rang. is applied to efficiently predict the overload hosts for ensuring.a smooth *** results show that our proposed method is better than the approach in Cloudsim under various performance *** results clearly showed that the proposed method can reduce the energ. consumption and provide a hig. level of commitment with ensuring.the minimum number of Virtual Machine(VM)Mig.ations as compared to the state-of-the-art methods.

关键词： Cloud infrastructure tricube weig.ted linear reg.ession inter quartile CPU RAM network bandwidth utilization

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Ce-substituted Lithium Ferrite:Preparation and Electrical Relaxation Studies

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Journal of Materials Science & Technolog. 2014年第4期30卷 335-341页

作者： Viswarupa Mohanty Rajesh Cheruku Lakshmi vijayan g.g.vindaraj Department of Physics School of PhysicalChemical and Applied SciencesPondicherry University

Ce-substituted lithium ferrite, Li0.5CexFe2.5-x04 （x = 0, 0.05 and 0.1 ） compositions were synthesized from metal nitrates and citric acid by the solution combustion process by keeping.the oxidizer to fuel ratio at unity. The thermal decomposition process was investig.ted by thermog.avimetry-differential thermal analysis, which showed a stable phase formation above 600 ℃. The phase composition and molecular bonding.of Li0.5CexFe2.5_x04 were characterized by X-ray powder diffraction analysis and Fourier transform infrared spectroscopy, respectively. An extensive study of electrical relaxation process has been represented with impedance and modulus as a function of frequency at different temperatures. The activation energ. obtained from both the formalisms was found to be equal within the error. The dc conductivity and hopping.frequency were thermally activated and their activation energ.es were found to be in the rang. of 0.69-0.64 eV for x = 0.05. The scaling.of modulus and impedance were used to understand the electrical relaxation behaviour of the compositions and they sug.est the time temperature superposition principle.

关键词： Lithium ferrite Solution combustion synthesis Inverse spinel Electrical relaxation process and scaling

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预测雷诺应力输运模型的机器学习算法评估

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Acta Mechanica Sinica 2022年第4期38卷 78-90,I0002页

作者： Jyoti Prakash Panda Hari vijayan Warrior Department of Mechanical Eng.neering DIT UniversityDehradun 248001India Department of Ocean Eng.neering.and Naval Architecture Indian Institute of Technology(IIT)Kharagpur 721302India

近年来,机器学习(ML)算法在湍流建模中的应用显示出了希望,但它们的应用仅限于基于涡流黏度的封闭方法.本文讨论了应用机器学习与高保真湍流数据的基本原理,以开发雷诺应力传输建模水平的模型.基于这些理论.本文比较了不同的机器学习算... 详细信息

近年来,机器学习(ML)算法在湍流建模中的应用显示出了希望,但它们的应用仅限于基于涡流黏度的封闭方法.本文讨论了应用机器学习与高保真湍流数据的基本原理,以开发雷诺应力传输建模水平的模型.基于这些理论.本文比较了不同的机器学习算法.以确定它们在雷诺应力输运方程中建模不同输运过程的有效性和鲁棒性.这些数据驱动的算法包括随机森林、梯度增强树和神经网络.采用直接数值模拟(DNS)数据作为ML模型的训练和测试.利用贝叶斯优化方法确定了ML算法的最优超参数.在雷诺应力输运方程的建模和预测中,评估了上述算法的有效性.观察到三种算法都以可接受的精度水平预测湍流参数.再将这些模型应用在不同于训练的流动情况的压力应变相关性的预测.以评估其鲁棒性和通用性.这探讨了基于ML的数据驱动湍流模型可以克服传统湍流模型的建模局限性.并且ML模型用大量不同类型的流数据训练.可以对具有相似流物理的未知流以合理的精度预测流场.除此之外,本文通过评估不同输入特征的重要性来验证最终的ML模型.

关键词： Machine learning Pressure strain correlation Turbulence modeling CFD

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Utilization of leather fibrous wastes for the production of reconstituted fibric materials:heavy metal determination and removal

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Waste Disposal and Sustainable Energ. 2022年第1期4卷 29-37页

作者： Rethinam Senthil Serdar Batıkan Kavukcu A.Wilson Aruni Urana Dandar Bahri Basaran vijayan Sumathi g.aduate School of Natural and Applied Science Ege University35100 BornovaIzmirTurkey School of Bio and Chemical Eng.neering Sathyabama UniversityChennaiTamilnadu 600199India Department of Chemistry Ege University35100 BornovaIzmirTurkey California University of Science and Medicine 217 E Club Centre Dr suite aSan BernardinoCA 92408USA Department of Leather Eng.neering Ege University35100 BornovaIzmirTurkey School of Electrical Eng.neering.and Centre for Automation VIT Chennai CampusChennaiTamilnadu 600127India

Incomprehension concerning.heavy metal containing.finished solid leather wastes leads to environmental *** of these solid leather waste into energ. and resource efficient products proves to be ***,leather microfibres(LMF)were isolated from these heavy metal containing.finished solid leather *** heavy metal contain LMF further processed into metal reduction *** metal reduction LMF were investig.ted for their heavy metal removal efficiency and toxicity *** Cr(III)and Cr(VI)content of LMF wasg.mL andg.mL,*** estimation was proved that the LMF had less than 1%.The study attempt to prepare reconstituted fibric materials(RFM)from metal reduction LMF and cellulose nanofibres(CNF).RFM were characterized for their physicochemical and mechanical ***,the study has proved a novel concept of RFM production which is recyclable,environmental friendly and cost effective.

关键词： Leather fibres Metal recovery Leather wastes Reconstituted fibric material Recyling

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A Machine Learning.Approach for MRI Brain Tumor Classification

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Computers, Materials & Continua 2017年第2期53卷 91-108页

作者： Ravikumar g.rusamy vijayan Subramaniam Assistant Professor/ECE Vivekanandha Institute of Engineering and Technology for Women ElayampalamTiruchengodeNamakkal(Dt)-637205 Principal Surya Engineering CollegeMettukkadaiErode-638107.

A new method for the denoising.extraction and tumor detection on MRI imag.s is presented in this *** imag.s help physicians study and diag.ose diseases or tumors present in the *** work is focused towards helping.the radiolog.st and physician to have a second opinion on the *** ambig.ity of Mag.etic Resonance(MR)imag. features is solved in a simpler *** MRI imag. acquired from the machine is subjected to analysis in the *** real-time data is used for the *** preprocessing.is performed using.various filters for noise *** de-noised imag. is seg.ented,and the feature extractions are *** are extracted using.the wavelet *** compared to other methods,the wavelet transform is more suitable for MRI imag. feature *** features are g.ven to the classifier which uses binary tree support vectors for *** classification process is compared with conventional methods.

关键词： MRI imag. brain patholog. K-Means alg.rithm Feature extraction Wavelet transform SVM Neural network K nearest alg.rithm.

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Parametric optimization of friction stir welding.process of ag. hardenable aluminum alloys-ANFIS modeling

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Journal of Central South University 2016年第8期23卷 1847-1857页

作者： D.vijayan V.Seshag.ri Rao Department of Mechanical Eng.neering Sri Chandrasekharendra Saraswathi Viswa Maha Vidyalaya Enathur Kanchipuram- 631561 Tamilnadu India St. Joseph's Colleg. of Eng.neering Chennai - 600025 Tamilnadu India

A comparative approach was performed between the response surface method(RSM) and the adaptive neuro-fuzzy inference system(ANFIS) to enhance the tensile properties, including.the ultimate tensile streng.h and the tensile elong.tion, of friction stir welded ag. hardenable AA6061 and AA2024 aluminum alloys. The effects of the welding.parameters, namely the tool rotational speed, welding.speed, axial load and pin profile, on the ultimate tensile streng.h and the tensile elong.tion were analyzed using.a three-level, four-factor Box-Behnken experimental desig.. The developed desig. was utilized to train the ANFIS models. The predictive capabilities of RSM and ANFIS were compared based on the root mean square error, the mean absolute error, and the correlation coefficient based on the obtained data set. The results demonstrate that the developed ANFIS models are more effective than the RSM model.

关键词： ANFIS模型 2024铝合金搅拌摩擦焊接时效硬化工艺参数优化自适应神经模糊推理系统 RSM模型断裂伸长率

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Increased plasma malondialdehyde and fructosamine in anemic H pylori infected patients:Effect of treatment

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World Journal of g.stroenterolog. 2007年第5期13卷 796-800页

作者： g.vijayan RC Sundaram Zachariah Bobby Abdoul Hamide N Selvaraj N Rattina Dasse Department of Biochemistry Jawaharlal Institute of Postgraduate Medical Education and Research Pondicherry 605006 India Department of Medicine Jawaharlal Institute of Postgraduate Medical Education and Research Pondicherry 605006 India

AIM: To unravel the possible association of malon-dialdehyde (MDA) and fructosamine in anemic H pylori infected patients and to observe the alteration in MDA and fructosamine levels in these patients after treatment for one ***: Fructosamine, MDA and g.ucose were estimated in 22 anemic H pylori infected patients and 16 healthy controls. Hematolog.cal parameters were also evaluated in both the g.oups using.Sysmex-K-100 automated cell counter. The H pylori infected patients were randomly divided into two g.oups. H pylori infected patients in g.oupⅠreceived both iron supplementation and anti-H pylori therapy, while patients in g.oup Ⅱ received only iron supplementation. All the biochemical and hematolog.cal parameters were estimated after one month of treatment. RESULTS: In anemic H pylori infected patients, while MDA (5.41 ± 2.16 vs 2.26 ± 0.50; P g.ificantly increased, iron (32.72 ± 14.93 vs 110.25 ± 26.58; P g.obin (6.9 ± 2.6 vs 12.66 ± 0.74; P g.ificantly decreased compared with the controls. With partial correlation analysis, fructosamine was found to have a sig.ificant positive correlation with MDA. In g.oupⅠ, while MDA level decreased sig.ificantly (3.11 ± 1.73 vs 5.50 ± 2.46; P g.ificant increase in iron (84.09 ± 29.51 vs 36.09 ± 17.81; P g.obin (10.40 ± 1.11 vs 7.42 ± 1.90; P g.ificant chang. in the levels of fructosamine in g.oupⅠafter treatment. Similarly, no sig.ificant alterations were noted in the levels of MDA, fructosamine, hemog.obin or ferritin in g.oup Ⅱ patients after one month of ***: An increased level of fructosamine and MDA was found in anemic H pylori infected patients. Present data supports the premise that lipid peroxi

关键词：幽门螺杆菌感染贫血果糖胺丙二醛血浆含量

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