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Enhanced hydrogen production in microbial electrolysis through strategies of carbon recovery from alkaline/thermal treated sludge

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 121-130页

作者： Ling Wang Chunxue Yang sangeetha thangavel Zechong Guo Chuan Chen Aijie Wang Wenzong Liu State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin150001China Heilongjiang Cold Region Wetland Ecology and Environment Research Key Laboratory School of Geography and TourismHarbin UniversityHarbin150086China Department of Energy and Refrigerating Air-Conditioning Engineering Taipei University of TechnologyTaipei10608China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang212013China School of Civil and Environmental Engineering Harbin Institute of Technology ShenzhenShenzhen518055China

The aim of this study was to investigate the biohydrogen production from thermal(T),alkaline(A)or thermal-alkaline(TA)pretreated sludge fermentation liquid(SFL)in a microbial electrolysis cells(MECs)without buffer *** hydrogen yield of 36.87±4.36 mgH_(2)/gVSS(0.026 m^(3)/kg COD)was achieved in TA pretreated SFL separated by centrifugation,which was 5.12,2.35 and 43.25 times higher than that of individual alkaline,thermal pretreatment and raw sludge,*** SFL from sludge by centrifugation eliminated the negative effects of particulate matters,was more conducive for hydrogen production than *** accumulated short chain fatty acid(SCFAs)after pretreatments were the main substrates for MEC hydrogen *** maximum utilization ratio of acetic acid,propionic acid and n-butyric acid was 93.69%,90.72%and 91.85%,*** results revealed that pretreated WAS was highly efficient to stimulate the accumulation of *** the characteristics and cascade bioconversion of complex substrates were the main factor that determined the energy efficiency and hydrogen conversion rate of MECs.

关键词： Waste activated sludge(WAS) Short chain fatty acids(SCFAs) Hydrogen Pretreatment Microbial electrolysis cells(MECs)

Application of interface material and effects of oxygen gradient on the performance of single-chamber sediment microbial fuel cells(SSMFCs)

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Journal of Environmental Sciences 2019年第1期31卷 163-168页

作者： Chin-Tsan Wang thangavel sangeetha Wei-Mon Yan Wen-Tong Chong Lip-Huat Saw Feng Zhao Chung-Ta Chang Chen-Hao Wang Department of Mechanical and Electro-Mechanical Engineering National I-Lan University Department of Energy and Refrigerating Air-Conditioning Engineering National Taipei University of Technology Department of Mechanical Engineering University of Malaya Jalan Universiti Lee Kong Chian Faculty of Engineering and Science UTAR CAS Key Laboratory of Urban Pollutant Conversion Institute of Urban Environment Chinese Academy of Science Institute of Materials Science and Engineering National Taiwan University of Science and Technology

Single-chamber sediment microbial fuel cells(SSMFCs) have received considerable attention nowadays because of their unique dual-functionality of power generation and enhancement of wastewater treatment performance. Thus, scaling up or upgrading SSMFCs for enhanced and efficient performance is a highly crucial task. Therefore, in order to achieve this goal, an innovative physical technique of using interface layers with four different pore sizes embedded in the middle of SSMFCs was utilized in this *** results showed that the performance of SSMFCs employing an interface layer was improved regardless of the pore size of the interface material, compared to those without such layers. The use of an interface layer resulted in a positive and significant effect on the performance of SSMFCs because of the effective prevention of oxygen diffusion from the cathode to the anode. Nevertheless, when a smaller pore size interface was utilized, better power performance and COD degradation were observed. A maximum power density of 0.032 mW/m^2 and COD degradation of 47.3% were obtained in the case of an interface pore size of 0.28 μm. The findings in this study are of significance to promote the future practical application of SSMFCs in wastewater treatment plants.

关键词： Single sediment microbial fuel cells Interface layer Dissolved oxygen Pore size Oxygen diffusion Diffusion coefficient

Intrumer:A Multi Module Distributed Explainable IDS/IPS for Securing Cloud Environment

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Computers, Materials & Continua 2025年第1期82卷 579-607页

作者： Nazreen Banu A S.K.B.sangeetha Department of Computer Science and Engineering SRM Institute of Science and TechnologyVadapalani CampusChennai600026Tamil NaduIndia

The increasing use of cloud-based devices has reached the critical point of cybersecurity and unwanted network *** environments pose significant challenges in maintaining privacy and *** approaches,such as IDS,have been developed to tackle these ***,most conventional Intrusion Detection System(IDS)models struggle with unseen cyberattacks and complex high-dimensional *** fact,this paper introduces the idea of a novel distributed explainable and heterogeneous transformer-based intrusion detection system,named INTRUMER,which offers balanced accuracy,reliability,and security in cloud settings bymultiplemodulesworking together within *** traffic captured from cloud devices is first passed to the TC&TM module in which the Falcon Optimization Algorithm optimizes the feature selection process,and Naie Bayes algorithm performs the classification of *** selected features are classified further and are forwarded to the Heterogeneous Attention Transformer(HAT)*** this module,the contextual interactions of the network traffic are taken into account to classify them as normal or malicious *** classified results are further analyzed by the Explainable Prevention Module(XPM)to ensure trustworthiness by providing interpretable *** the explanations fromthe classifier,emergency alarms are transmitted to nearby IDSmodules,servers,and underlying cloud devices for the enhancement of preventive *** experiments on benchmark IDS datasets CICIDS 2017,Honeypots,and NSL-KDD were conducted to demonstrate the efficiency of the INTRUMER model in detecting network trafficwith high accuracy for different *** outperforms state-of-the-art approaches,obtaining better performance metrics:98.7%accuracy,97.5%precision,96.3%recall,and 97.8%*** results validate the robustness and effectiveness of INTRUMER in securing diverse cloud environments against sophisticated cyber threats.

关键词： Cloud computing intrusion detection system transformers and explainable artificial intelligence(XAI)

Navigating the ethical terrain:Off-label and experimental treatments in medical case reports

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World Journal of Methodology 2025年第1期15卷 1-5页

作者： Madhan Jeyaraman Naveen Jeyaraman Swaminathan Ramasubramanian sangeetha Balaji Department of Orthopaedics ACS Medical College and HospitalDr MGR Educational and Research InstituteChennai 600077India Department of Orthopaedics Government Medical CollegeOmandurar Government EstateChennai 600002India

This article explores the ethical considerations surrounding the reporting of offlabel and experimental treatments in medical case reports,with a focus on fields such as oncology,psychiatry,and *** emphasizes the balance between innovation and evidence-based medicine,highlighting the critical role of case reports in disseminating clinical experiences and advancing medical *** discussion delves into the ethical framework guiding case reporting,including principles of patient autonomy,informed consent,non-maleficence,beneficence,justice,and *** such as negative outcome reporting,commercial interests,and the balance between innovation and caution are *** for ethical vigilance,the development of comprehensive guidelines,and the role of regulatory bodies are proposed to ensure patient safety and uphold scientific *** article concludes by underscoring the importance of a collaborative effort among clinicians,researchers,ethicists,and regulatory bodies to foster the responsible advancement of medical science while adhering to the highest ethical standards.

关键词： Ethical considerations Patient autonomy Informed consent Non-maleficence Beneficence Transparency Evidence-based medicine

Beyond statistical significance:Embracing minimal clinically important difference for better patient care

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World Journal of Methodology 2025年第1期15卷 33-41页

作者： Naveen Jeyaraman Madhan Jeyaraman Swaminathan Ramasubramanian sangeetha Balaji Sathish Muthu Department of Orthopaedics ACS Medical College and HospitalDr MGR Educational and Research InstituteChennai 600077Tamil NaduIndia Department of Research Methods Orthopaedic Research GroupCoimbatore 641045Tamil NaduIndia Department of Orthopaedics Government Medical CollegeOmandurar Government EstateChennai 600002Tamil NaduIndia Department of Biotechnology Faculty of EngineeringKarpagam Academy of Higher EducationCoimbatore 641021Tamil NaduIndia Department of Orthopaedics Government Medical CollegeKarur 639004Tamil NaduIndia

The minimal clinically important difference(MCID)represents a pivotal metric in bridging the gap between statistical significance and clinical relevance,addressing the direct impact of medical interventions from the patient's *** comprehensive review analyzes the evolution,applications,and challenges of MCID across medical specialties,emphasizing its necessity in ensuring that clinical outcomes not only demonstrate statistical significance but also offer genuine clinical utility that aligns with patient expectations and *** discuss the evolution of MCID since its inception in the 1980s,its current applications across various medical specialties,and the methodologies used in its calculation,highlighting both anchor-based and distribution-based ***,the paper delves into the challenges associated with the application of MCID,such as methodological variability and the interpretation difficulties that arise in clinical *** for the future include standardizing MCID calculation methods,enhancing patient involvement in setting MCID thresholds,and extending research to incorporate diverse global *** steps are critical to refining the role of MCID in patient-centered healthcare,addressing existing gaps in methodology and interpretation,and ensuring that medical interventions lead to significant,patient-perceived improvements.

关键词： Minimal clinically important difference Patient-centered care Clinical relevance Global health

Growth response of Pterocarpus santalinus seedlings to native microbial symbionts(arbuscular mycorrhizal fungi and Rhizobium aegyptiacum)under nursery conditions

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Journal of Forestry Research 2021年第1期32卷 225-231页

作者： Arumugam Karthikeyan thangavel Arunprasad Institute of Forest Genetics and Tree Breeding Coimbatore 641002India

The objective of this research was to improve the growth and biomass of Pterocarpus santalinus L.f.(an endangered leguminous tree)using native microbial symbionts such as arbuscular mycorrhizal fungi and Rhizobium associated with native populations of *** native arbuscular mycorrhizal fungi isolated from *** soils were identifi ed as(1)Glomus fasciculatum;(2)Glomus geosporum;and Glomus aggregatum.A nitrogenfi xing microbial symbiont was isolated from the root nodules of *** and identifi ed as Rhizobium aegyptiacum by 16s rRNA gene *** microbial symbionts were inoculated individually and in combination into *** seedling *** 90 days,growth and biomass had improved compared with uninoculated *** and root lengths,number of leaves,stem circumference,number of root nodules,biomass,nutrient uptake and seedling quality index were signifi cantly increased by a combined inoculation of arbuscular mycorrhizal fungi+Rhizobium *** was concluded that native microbial symbionts positively infl uenced *** seedling growth which will be helpful for successful fi eld establishment.

关键词： Arbuscular mycorrhizal fungi Microbial symbionts Pterocarpus santalinus Red sanders Rhizobium aegyptiacum

Optimal Resource Allocation and Quality of Service Prediction in Cloud

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Computers, Materials & Continua 2021年第4期67卷 253-265页

作者： Priya Baldoss Gnanasekaran thangavel Information and Communication Engineering Department Anna UniversityChennaiIndia Department of Computer Science and Engineering Sri Sai Ram Engineering CollegeChennaiIndia RMK Engineering College ChennaiIndia

In the present scenario,cloud computing service provides on-request access to a collection of resources available in remote system that can be shared by numerous *** are in self-administration;consequently,clients can adjust their usage according to their *** usage is estimated and clients can pay according to their *** literature,the existing method describes the usage of various hardware *** of Service(QoS)needs to be considered for ascertaining the schedule and the access of *** with the security arrangement,any additional code is forbidden to ensure the usage of resources complying with ***,all monitoring must be done from the *** overcome the issues,Robust Resource Allocation and Utilization(RRAU)approach is developed for optimizing the management of its cloud *** work hosts a numerous virtual assets which could be expected under the circumstances and it enforces a controlled degree of *** asset assignment calculation is heuristic,which is based on experimental evaluations,RRAU approach with J48 prediction model reduces Job Completion Time(JCT)by 4.75 s,Make Span(MS)6.25,and Monetary Cost(MC)4.25 for 15,25,35 and 45 resources are compared to the conventional methodologies in cloud environment.

关键词： Cloud computing resource utilization robust resource allocation and utilization(RRAU)approach job completion time quality of services monetary cost make span

BLEND MEMBRANES FOR DIRECT METHANOL AND PROTON EXCHANGE MEMBRANE FUEL CELLS

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Chinese Journal of Polymer Science 2012年第4期30卷 548-560页

作者： Perumal Bhavani Dharmalingam sangeetha Department of Chemistry Anna UniversityChennai 25India

Sulphonated polystyrene ethylene butylene polystyrene （SPSEBS） prepared with 35% sulphonation was found to be highly elastic and enlarged up to 300%-400% of its initial length. It absorbed over 110% of water by weight. A major drawback of this membrane is its poor mechanical properties which are not adequate for use as polymer electrolytes in fuel cells. To overcome this, SPSEBS was blended with poly（vinylidene fluoride）（PVDF）, a hydrophobic polymer. The blend membranes showed better mechanical properties than the base polymer. The effect of PVDF content on water uptake, ion exchange capacity and proton conductivity of the blend membranes was investigated. This paper presents the results of recent studies applied to develop an optimized in-house membrane electrode assembly （MEA） preparation technique combining catalyst ink spraying and assembly hot pressing. Easy steps were chosen in this preparation technique in order to simplify the method, aiming at cost reduction. The open circuit voltage for the cell with SPSEBS is 0.980 V which is higher compared to that of the cell with Nation 117 （0.790 V）. From this study, it is concluded that a polymer electrolyte membrane suitable for proton exchange membrane fuel cell （PEMFC） and direct methanol fuel cell （DMFC） application can be obtained by blending SPSEBS and PVDF in appropriate proportions. The methanol permeability and selectivity showed a strong influence on DMFC performance.

关键词： Fuel cell Impedance Polymer blend Proton conductivity.

Anticancer activity of Tephrosia purpurea and Ficus religiosa using MCF 7 cell lines

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Asian Pacific Journal of Tropical Medicine 2011年第7期4卷 526-529页

作者： Vishal Gulecha thangavel Sivakuma Nandha College of Pharmacy ErodeTamilnaduIndia

Objective:To investigate anticancer activity of different fractions of Tephrosia purpurea[TP] （Sharapunkha,Fabaceae） and Ficus religiosa[FR]（Peepal,Moraceae）.Methods:The fractions of TP and FR were prepared and tested for in vitro anticancer activity using human MCF 7 cell line by trypan blue exclusion ***:The result showed that among all these fractions of *** and FRIII showed better anticancer activity compared to other *** IC50 value for TPI（152.4μM）,TPIII（158.71μM）.FRI（160.3μM） and for FRIII（222.7μM） was ***:The present study shows anticancer potential of TP and FR fractions in MCF 7 cell line.

关键词： Tephrosia purpurea Ficus religiosa MCF 7 cell line trypan blue