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594篇 您的检索式:作者名="Pandian"
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1Comparative investigation of coal-and oil-fired boilers based on emission factors,ozone and secondary organic aerosol formation potentials of VOCs显示文摘Volatile organic compounds(VOCs)are the important precursors of the tropospheric ozone(O3)and secondary organic aerosols(SOA),both of which are known to harm human health and disrupt the earth’s climate system.In this study,VOC emission factors,O3 and SOA formation potentials were estimated for two types of industrial boilers:coal-fired boilers(n=3)and oil-fired boilers(n=3).Results showed that EVOCs concentrations were more than nine times higher for oil-fire d boilers compared to those for coal-fired boilers.Emission factors ofΣVOCs were found to be higher for oil-fired boilers(9.26-32.83 mg-VOC/kg)than for coal-fired boilers(1.57-4.13 mg-VOC/kg).Alkanes and aromatics were obtained as the most abundant groups in coal-fired boilers,while oxygenated organics and aromatics were the most contributing groups in oil-fired boilers.Benzene,n-hexane and o-ethyl toluene were the abundant VOC species in coal-fired boiler emissions,whereas toluene was the most abundant VOC species emitted from oil-fired boilers.O3 and SOA formation potentials were found 12 and 18 times,respectively,higher for oil-fired than for coal-fired boilers.Total OFP ranged from 3.99 to 11.39 mg-O3/kg for coal-fired boilers.For oil-fired boilers,total OFP ranged from 36.16 to 131.93 mg-O3/kg.Moreover,total secondary organic aerosol potential(SOAP)ranged from 65.4 to 122.5 mg-SOA/kg and 779.9 to 2252.5 mg-SOA/kg for the coal-fired and oil-fired boilers,respectively.Hsi-Hsien Yang Sunil Kumar Gupta Narayan Babu Dhital Lin-Chi Wang Suresh Pandian Elumalai 2020Journal of Environmental Sciences2020,32,6:6
2Data-driven reliability analysis of Boeing 787 Dreamliner显示文摘The Boeing 787 Dreamliner,launched in 2011,was presented as a game changer in air travel.With the aim of producing an efficient,mid-size,wide-body plane,Boeing initiated innovations in product and process design,supply chain operation,and risk management.Nevertheless,there were reliability issues from the start,and the plane was grounded by the U.S.Federal Aviation Administration(FAA)in 2013,due to safety problems associated with Li-ion battery fires.This paper chronicles events associated with the aircraft’s initial reliability challenges.The manufacturing,supply chain,and organizational factors that contributed to these problems are assessed based on FAA data.Recommendations and lessons learned are provided for the benefit of engineers and managers who will be engaged in future complex systems development.Guru PANDIAN Michael PECHT Enrico ZIO Melinda HODKIEWICZ 2020Chinese Journal of Aeronautics2020,33,7:6
3Synergistic anticancer effect of green synthesized nickel nanoparticles and quercetin extracted from Ocimum sanctum leaf extract显示文摘Leaf extract of medicinally important plant Ocimum sanctum(O. sanctum) has been used for the synthesis of nickel nanoparticles(Ni Gs) and extraction of quercetin(Qu). Qu has been conjugated with Ni Gs for enhanced anticancer effect on human breast cancer MCF–7 cells. Extracted Qu was conjugated with polyethylene glycol(PEG) coated Ni Gs(Qu–PEG–Ni Gs) which was used as carriers for breast cancer treatment. Anticancer activity of Qu–PEG–Ni Gs was evaluated by assessing cell viability, reactive oxygen species(ROS) production, caspase activity, mitochondrial membrane potential(MMP) and changes in nuclear morphology(staining methods). 0.85 mg of quercetin was extracted from 1 g of leaves with retention time(R_t) of 2.914 min. Loading and encapsulation efficiency of quercetin onto PEG–Ni Gs was 15.04% and 82% respectively and Qu–PEG–Ni Gs has shown a sustained release of Qu of about 84% after 48 h. Qu and Qu–PEG–Ni Gs showed dose dependent(1.56–50 μg/m L) anticancer effect against MCF–7 cells with IC50 values of 50 and 6.25 μg/m L respectively which was mediated by oxidative stress due to ROS over-production that induced loss of mitochondrial membrane potential, capsase-9,-7 activities leading to apoptosis. The present study validates that Qu–PEG–Ni Gs can be used as a potential anticancer agent for cancer therapy.Palanivel Rameshthangam Jeyaraj Pandian Chitra 2018Journal of Materials Science & Technology2018,34,3:5
4Kopsia Singapurensis提取物对酸性介质中低碳钢的缓蚀效应(英文)显示文摘The influence of the alkaloid extract of Kopsia singapurensis on the corrosion behavior of mild steel (MS) in 1 mol·L-1 HCl and 1 mol·L-1 H2SO4 was studied using electrochemical techniques, viz., potentiodynamic polarization and AC impedance. The experimental results clearly show that the plant extract effectively inhibits corrosion in both acid media and the inhibition efficiency obtained from the electrochemical techniques is in good agreement. Furthermore, the polarization technique indicates that the extract acts as an anodic type inhibitor in HCl and as a mixed type in H2SO4. Scanning electron microscopy (SEM) was carried out to examine the surface morphological changes of metal specimens in both the inhibited and uninhibited solutions. SEM images show the formation of an adsorbed layer over the metal surface by the inhibitor molecule. The presence of alkaloidal constituents in the plant extract was confirmed by Fourier transform infrared (FTIR) spectroscopy and chemical analysis.RAJA Pandian Bothi RAHIM Afidah Abdul OSMAN Hasnah AWANG Khalijah 2010物理化学学报2010,26,8:4
5Emission and performance analysis of a diesel engine burning cashew nut shell oil bio diesel mixed with hexanol显示文摘In this study, the effect of doping hexanol into biodiesel which is from neat cashew nut shell biodiesel oil on the emissions and the performance characteristics was studied in a constant speed diesel engine. The main purpose of this work is to reduce various emissions and also to improve the performance of the diesel engine when fueled with blends of hexanol and neat cashew nut shell biodiesel. Cashew nut shell oil is not edible, and hence it can be used as a viable alternative to diesel.Cashew nut shell biodiesel is prepared by conventional transesterification. Hexanol with 99.2% purity was employed as an oxygenated additive. Experimental studies were conducted by fueling diesel as a baseline and by fueling hexanol and neat cashew nut shell biodiesel mixture. A fuel comprising 10%(by volume) of hexanol and 90%(by volume) neat cashew nut shell biodiesel was referred to as CNSBD900 H100 and fuel comprising 20%(by volume) of hexanol and 80%(by volume)of neat cashew nut shell biodiesel was referred to as CNSBD800 H200. This study also investigated the possibility of using pure biofuel in an unmodified naturally aspirated diesel engine. The outcome of this study showed that adding hexanol at10% and 20%(by volume) to cashew nut shell biodiesel results in a reduction in emissions. In addition, a significant improvement in brake thermal efficiency and reduction in brake-specific fuel consumptions were achieved. Hence, it could be concluded that hexanol could be a viable and promising additive for improving the drawbacks of biodiesel when it was used to fuel an unmodified diesel engine.Amith Kishore Pandian Dinesh Babu Munuswamy Santhanakrishnan Radhakrishanan Yuvarajan Devarajan Ramesh Bapu Bathey Ramakrishnan Beemkumar Nagappan 2018Petroleum Science2018,15,1:3
6Attribute driven inverse materials design using deep learning Bayesian framework显示文摘Much of computational materials science has focused on fast and accurate forward predictions of materials properties,for example,given a molecular structure predict its electronic properties.This is achieved with first principles calculations and more recently through machine learning approaches,since the former is computation-intensive and not practical for high-throughput screening.Searching for the right material for any given application,though follows an inverse path—the desired properties are given and the task is to find the right materials.Here we present a deep learning inverse prediction framework,Structure Learning for Attributedriven Materials Design Using Novel Conditional Sampling(SLAMDUNCS),for efficient and accurate prediction of molecules exhibiting target properties.We apply this framework to the computational design of organic molecules for three applications,organic semiconductors for thin-film transistors,small organic acceptors for solar cells and electrolyte additives with high redox stability.Our method is general enough to be extended to inorganic compounds and represents an important step in deep learning based completely automated materials discovery.Piyush M.Tagade Shashishekar P.Adiga Shanthi Pandian Min Sik Park Krishnan S.Hariharan Subramanya Mayya Kolake 2019npj Computational Materials2019,,1:2
7Natural products as corrosion inhibitor for metals in corrosive media — A review显示文摘Pandian Bothi Raja Mathur Gopalakrishnan Sethuraman 2007Materials Letters2007,,1:2
8电晕法制备抗PID多晶硅太阳电池显示文摘使用电晕放电的方式产生臭氧,在多晶硅片镀氮化硅膜前对硅片进行氧化处理,硅片表面生长一层致密的二氧化硅膜。经过这样处理的电池片转换效率不受影响,制作的组件能通过双85环境测试,抗PID性能良好。摘要:熊大明 孙杰 Thangaraj Baskara Pandian 万小强 龚海波 2015太阳能2015,,10:2
9褐海藻中硫酸多糖的抗菌和抗氧化活性(英文)显示文摘AIMS: Sulfated polysaccharide extracted from the brown algae Sargassum swartzii was studied for antioxidant potential. METHODS: The extracted sulfated polysaccharide was analyzed for physico-chemical characteristics, TAC, reducing power, free radical scavenging potentials (DPPH, ABTS, H2O2 radical) and antibacterial properties. RESULTS: The extract showed a high percentage of carbohydrate (7.40 ± 0.63) %, followed by sulfate (5.3 ± 1.54) %. The highest antioxidant activity was observed in ABTS (55 ± 3.61) %, followed by H2O2 (47.23 ± 2.81) % and DPPH (25.33 ± 2.52) %; significant differences were observed at (P ≥ 0.05). Among the ten human pathogenic strains tested, E. coli was the more sensitive. The characterization and mobility of the sulfated polysaccharide was examined by the FT-IR spectrum and assayed by agarose gel electrophoresis which showed highest mobility at higher pH buffer in carbonate-bicarbonate (pH 10) buffer. The molecular weight of the sulfated polysaccharide was determined by gradient PAGE and was found to be 50 KDa. Finally, GC-MS analysis revealed the presence of peaks corresponding to dimethyl-4-nitroaniline (26.34%). CONCLUSIONS: It is suggested that the sulfated polysaccharide from Sargassum swartzii could be a better source of natural antioxidant, as well as an antibacterial agent.Pandian Vijayabaskar Noormohamed Vaseela Ganapathy Thirumaran 2012中国天然药物2012,10,6:2
10Eugenol (an essential oil of clove) acts as an antibacterial agent against Salmonella typhi by disrupting the cellular membrane显示文摘K. Pandima Devi S. Arif Nisha R. Sakthivel S. Karutha Pandian 2010Journal of Ethnopharmacology2010,,1:2
11A critique of reliability prediction techniques for avionics applications显示文摘Avionics(aeronautics and aerospace) industries must rely on components and systems of demonstrated high reliability.For this, handbook-based methods have been traditionally used to design for reliability, develop test plans, and define maintenance requirements and sustainment logistics.However, these methods have been criticized as flawed and leading to inaccurate and misleading results.In its recent report on enhancing defense system reliability, the U.S.National Academy of Sciences has recently discredited these methods, judging the Military Handbook(MILHDBK-217) and its progeny as invalid and inaccurate.This paper discusses the issues that arise with the use of handbook-based methods in commercial and military avionics applications.Alternative approaches to reliability design(and its demonstration) are also discussed, including similarity analysis, testing, physics-of-failure, and data analytics for prognostics and systems health management.Guru Prasad PANDIAN Diganta DAS Chuan LI Enrico ZIO Michael PECHT 2018Chinese Journal of Aeronautics2018,31,1:2
12Biosynthesis, purification and characterization of silver nanoparticles using Escherichia coli显示文摘Sangiliyandi Gurunathan Kalimuthu Kalishwaralal Ramanathan Vaidyanathan Deepak Venkataraman Sureshbabu Ram Kumar Pandian Jeyaraj Muniyandi Nellaiah Hariharan Soo Hyun Eom 2009Colloids and Surfaces B: Biointerfaces2009,,1:2
13Laparoscopic esophagomyotomy for achalasia in children:Areview显示文摘Esophageal achalasia in children is rare but ultimately requires endoscopic or surgical treatment. Historically, Heller esophagomyotomy has been recommended as the treatment of choice. The refinement of minimally invasive techniques has shifted the trend of treatment toward laparoscopic Heller myotomy(LHM) in adults and children with achalasia. A review of the available literature on LHM performed in patients < 18 years of age was conducted. The pediatric LHM experience is limited to one multiinstitutional and several single-institutional retrospective studies. Available data suggest that LHM is safe and effective. There is a paucity of evidence on the need for and superiority of concurrent antireflux procedures. In addition, a more complete portrayal of complications and long-term(> 5 years) outcomes is needed. Due to the infrequency of achalasia in children, these characteristics are unlikely to be defined without collaboration between multiple pediatric surgery centers. The introduction of peroral endoscopic myotomy and single-incision techniques, continue the trend of innovative approaches that may eventually become the standard of care.T Kumar Pandian Nimesh D Naik Aodhnait S Fahy Arman Arghami David R Farley Michael B Ishitani Christopher R Moir 2016World Journal of Gastrointestinal Endoscopy2016,8,2:2
14The resource-based view within the conversation of strategic management显示文摘MAHONEY J T PANDIAN R 1992Strategic Management Journal1992,13,5:1
15The use of breast ultras- ound color Doppler vascular pattern morphology improves diagnostic sensitivity with minimal change in specificity显示文摘Svensson WE Pandian AJ Hashimoto H 2010Ultraschall Med2010,31,5:1
16Evaluating effects of traffic and vehicle characteristics on vehicular emis-sions near traffic intersections显示文摘PANDIAN S GOKHALE S GHOSHAL A K 2009Transportation Research Part D:Transport and Environment2009,14,3:1
17Catalase activity and innate immune response of Caenorhabditis elegans against the heavy metal toxin lead显示文摘VIGNESHKUMAR B PANDIAN S K BALAMURUGAN K 0,,:1
18Isolation of heterotrophie bacteria from Patk Bay sediments showing heavy metal tolerance and antibiotic production 显示文摘NITHYA C PANDIAN S K 2010Microbiol Res2010,165,7:1
19Recent developments in accelerated cheese ripening显示文摘Morsi El Soda Sithian Pandian 1991Journal of Dairy Science1991,74,7:1
20Comparison of aberrometer and autorefractor measures of refractive error in children显示文摘Martinez AA Pandian A Sankaridurg P Rose K Huynh SC Mitchell P 2006Optom Vis Sci2006,83,11:1
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