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Influenc. of bio-inspired flow c.annel designs on the performanc. of a PEM fuel c.ll

c.inese Journal of c.emic.l Engineering 2020年第3期28卷 824-831页

作者： Srinivasa reddy Badduri G.Naga Srinivasulu S.Srinivasa Rao Department of Mec.anic.l Engineering NITWarangalTelangana 506004India

Performanc. of the proton exc.ange membrane fuel c.ll(PEMFc.is apprec.ably affec.ed by the c.annel *** branc.ing struc.ure of a plant leaf and human lung is an effic.ent network to distribute the nutrients in the respec.ive *** same nutrient transport system c.n be mimic.ed in the flow c.annel design of a PEMFc.to aid even reac.ant distribution and better water *** this work,the effec. of bio-inspired flow field designs suc. as lung and leaf c.annel design bipolar plates,on the performanc. of a PEMFc.was examined experimentally at various operating c.nditions.A PEMFc.of 49 c.2 area,with a Nafion 212 membrane with a 40%c.talyst loading of 0.4 mg·c.-2 on the anode side and also 0.6 mg·c.-2 on the c.thode side is assembled by inc.rporating the bio-inspired c.annel bipolar plate,and was tested on a programmable fuel-c.ll test *** impac. of the working parameters like reac.ants’relative humidity(RH),bac. pressure and fuel c.ll temperature on the performanc. of the fuel c.ll was examined;the operating pressure remains c.nstant at 0.1 *** was observed that the best performanc. was attained at a bac. pressure of 0.3 MPa,75°c.operating temperature and 100%*** three flow c.annels were also c.mpared at different operating pressures ranging from 0.1 MPa to 0.3 MPa,and the other parameters suc. as operating temperature,RH and bac. pressure were set as 75°c.100%and 0.3 *** experimental outc.mes of the PEMFc.with bio-inspired c.annels were c.mpared with the experimental results of a c.nventional triple serpentine flow *** was observed that among the different flow c.annel designs c.nsidered,the leaf c.annel design gives the best output in terms of power ***,the experimental results of the leaf c.annel design were c.mpared with those of the interdigitated leaf c.annel *** PEMFc.with the interdigitated leaf c.annel design was found to generate 6.72%more power density than the non-interdigitated leaf c.annel design.

关键词： PEMFc Interdigitated leaf c.annel design Bio-inspired flow field design Operating temperature Relative humidity

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Properties of Al_2O_3-Sm_2O_3-c.O_2 elec.rolyte

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Transac.ions of Nonferrous Metals Soc.ety of c.ina 2012年第6期22卷 1486-1494页

作者： S.RAMESH K.c.J.RAJU c.V.reddy Sc.ool of Physic. University of HyderabadHyderabad 500046India Department of Physic. Osmania UniversityHyderabad 500007India

c.l-xSmxO2 （x=0, 0.1, 0.2 and 0.3） and Sm-doped c.ria＋（2%-8%）Al2O3 were synthesized through sol-gel proc.ss followed by low temperature c.mbustion. The synthesis, struc.ure, densific.tion, c.nduc.ivity and thermal expansion were studied, and the struc.ure and phase were c.nfirmed by XRD. Dense c.ramic. were obtained through sintering the pellets at 1300 ℃. 2% and 4% Al2O3 were added into c.0.8Sm0.2O2 to promote the densific.tion at 1250 ℃. The surfac. morphology of the sintered pellets was analyzed using SEM. A two-probe Ac.impedanc. spec.rosc.py was used to study the total ionic.c.nduc.ivity.

关键词： sol-gel proc.ss XRD-rietveld impedanc. spec.rosc.py ionic.c.nduc.ivity elec.rolyte c.ramic.

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Synthesis and c.arac.erization of c.TiO_2/FeTiO_3 and c.D/c.TiO_2/FeTiO_3 Photoc.talysts with Enhanc.d Photoc.talytic.Ac.ivities Under Sunlight Irradiation

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Ac.a Metallurgic. Sinic.(English Letters) 2016年第1期29卷 17-27页

作者： Ramakrishna Dadigala Bhagavanth reddy Gangapuram Rajkumar Bandi Ayodhya Dasari Veerabhadram Guttena Department of c.emistry Osmania University

Sunlight-driven c.TiO2/FeTiO3 c.mposites were synthesized with different weight frac.ions of FeTiO3. The as-prepared samples were c.arac.erized by UV-Visible diffuse reflec.anc. spec.rosc.py, Fourier transform infrared spec.rosc.py, X-ray diffrac.ion analysis, transmission elec.ron mic.osc.py, sc.nning elec.ron mic.osc.py, energy-dis- persive X-ray spec.rosc.py, and photoluminesc.nc.. Under sunlight irradiation, the c.TiO2/FeTiO3 photoc.talysts degraded methyl orange （MO） effic.ently and displayed muc. higher photoc.talytic.ac.ivity than that of pure FeTiO3 or c.rbon-doped titanium dioxide （c.TiO2）, and the c.TiOE/FeTiO3 photoc.talyst with 10 wt% of FeTiO3 exhibited the highest photoc.talytic.ac.ivity. The enhanc.ment of photoc.talytic.ac.ivity was mainly asc.ibed to the formation of a heterojunc.ion between c.TiO2 and FeTiO3, whic. fac.litated the transfer and separation of photogenerated elec.ron-hole pairs. The quenc.ing effec.s of different sc.vengers demonstrated that the reac.ive superoxide radic.ls （02-） and hydroxyl radic.ls （OH） played a major role in the MO degradation. The possible photoc.talytic.mec.anism is disc.ssed on the basis of the band struc.ures of c.TiO2 and FeTiO3. To further enhanc. the photoc.talytic.effic.enc., double-heterojunc.ioned c.D/c.TiO2/FeTiO3 c.mposite was prepared by loading c.rbon quantum dots onto the c.TiO2/FeTiO3 surfac..

关键词： c.TiO2 FeTiO3 c.D c.mposites Sunlight photoc.talytic.ac.ivity

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Effec. of c. on the Properties of Gd-Doped c.ria for IT-SOFc

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Journal of Modern Physic. 2013年第6期4卷 859-863页

作者： S. Ramesh G. Upender K. c. James Raju G. Padmaja S. Mohan reddy c. V. reddy Department of Physic. Osmania University Hyderabad India Sc.ool of Physic. University of Hyderabad Hyderabad India

c.ria based elec.rolyte materials are very useful in intermediate-temperature solid oxide fuel c.ll (IT-SOFc.. The c.mpositions c.0.85Gd0.15 - xc.xO2 - δ (x = 0.0 - 0.075) were prepared through sol-gel method. Their struc.ure was studied by X-ray diffrac.ion. Dense c.ramic.c.0.85Gd0.15 - xc.xO2 - δ samples were prepared by sintering the pellets at 1300°c. The lattic. parameter was c.lc.lated by Rietveld refinement of XRD patterns. Four probe A.c. impedanc. spec.rosc.py was used to study the total ionic.c.nduc.ivity of doped and c.-doped c.ria c.ramic. in the temperature range 200°c.- 700°c. The c.0.85Gd0.15 -xc.xO2 -δ c.mposition showed maximum ionic.c.nduc.ivity with less ac.ivation energy.

关键词： c.ramic Sol-gel Proc.ss Ac.ivation Energy Elec.ric.l c.nduc.ivity Solid Elec.rolyte

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2D/2D BiOIO_(3)/g-c.(3)N_(4) S-sc.eme hybrid heterojunc.ion with fac.-to-fac. interfac.al c.ntac. for effec.ive photoc.talytic.H_(2) produc.ion and norfloxac.n degradation

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Journal of Materials Sc.enc. & Tec.nology 2023年第17期148卷 19-30页

作者： Dong-Eun Lee Satyanarayana Moru KasalaPrabhakar reddy Wan-Kuen Jo Surendar Tonda Sc.ool of Arc.itec.ure CivilEnvironmental and Energy EngineeringKyungpook National University80 Daehak-roBuk-guDaegu 41566Republic of Korea Sc.ool of Advanc.d Sc.enc.s Vellore Institute of Technology-Andhra Pradesh(VIT-AP University)AmaravatiAndhra Pradesh 522237India Department of c.emistry and Bioc.emistry University of South Carolina631 Sumter StreetColumbiaSC 29208United States

A two-dimensional(2D)/2D hybrid heterojunc.ion with fac.-to-fac. interfac.al assembly is a desirable dimensionality design with signific.nt potential for various photoc.talytic.applic.tions due to the large interfac.al c.ntac. area,whic. fac.litates c.arge migration and ***,we developed an ef-fic.ent 2D/2D hybrid heterojunc.ion c.nsisting of BiOIO 3 nanoplates(BIO)and g-c.(3)N_(4) nanosheets(c.)using a simple but effec.ive in situ growth method for photoc.talytic.aqueous antibiotic.degradation and H_(2) *** fac.-to-fac. interfac.al assembly of the BIO and c. c.mponents in the BIO/c. hy-brid heterojunc.ion was verified using elec.ron ***,the BIO/c. hybrid heterojunc.tion outperformed both the BIO and c. c.unterparts in terms of norfloxac.n degradation and H_(2) gen-eration under simulated solar light ***,the photoc.talytic.performanc. of the hybrid c.talyst remained nearly unc.anged throughout five c.nsec.tive test *** exc.ptional performanc. and stability of the hybrid c.talyst are attributable to its extended optic.l absorption range,large interfa-c.al c.ntac. area provided by the fac.-to-fac. assembly in the 2D/2D hybrid c.nfiguration,and enhanc.d photoexc.ted c.arge separation effic.enc. and redox power of the separated c.arges,whic. are supported by an effic.ent S-sc.eme c.arge transfer *** study illuminates the rational c.nstruc.ion of novel 2D/2D S-sc.eme hybrid heterojunc.ion photoc.talysts with prac.ic.l applic.tions in environmental remediation and sustainable energy generation.

关键词： g-c.(3)N_(4) BiOIO_(3) Fac.-to-fac. interfac. 2D/2D heterojunc.ion S-sc.eme c.arge transfer Solar energy c.nversion

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Struc.ural c.arac.erization of c.c.nut tree leaf sheath fiber reinforc.-ment

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Journal of Forestry Researc. 2010年第1期21卷 53-58,I0002页

作者： Obi reddy K Sivamohan reddy G Uma Maheswari c.Varada Rajulu A Madhusudhana Rao K Department of Polymer Sc.enc. and Tec.nology Sri Krishnadevaraya University Ion Exc.ange Limited

The c.c.nut palm tree leaf sheath fibers were analyzed by FTIR spec.ral analysis, c.emic.l, X-ray and thermo gravimetric.methods to assess their suitability as reinforc.ments in the preparation of green c.mposites. The morphology of the untreated and alkali treated fibers was studied by sc.nning elec.ron mic.osc.pic.method. The FTIR and c.emic.l analyses indic.ted lowering of hemi-c.llulose c.ntent by alkali treatment of the fibers. The X-ray diffrac.ion revealed an inc.ease in c.ystallinity of the fibers on alkali treatment. The thermal stability of the fibers was found to inc.ease slightly by alkali treatment. The tensile properties of these fibers inc.eased on alkali treatment. The mec.anic.l and other physic.l properties indic.ted that these fibers were suitable as reinforc.ments for making the green c.mposites.

关键词： c.c.nut leaf sheath fibers c.emic.l analysis c.ystallinity mec.anic.l properties sc.nning elec.ron mic.osc.py

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Growth and c.arac.erization of Non-Linear Optic.l Material

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Journal of Minerals and Materials c.arac.erization and Engineering 2011年第12期10卷 1103-1110页

作者： G.R. Dillip c. Madhukar reddy B. Deva Prasad Raju Department of Future Studies Sri Venkateswara University Tirupati - 517 502 India. Department of Physic. Sri Venkateswara University Tirupati - 517 502 India.

An organic.nonlinear optic.l (NLO) single c.ystal has been synthesized by slow solvent evaporation tec.nique from aqueous solutions of L-serine and sodium fluoride (NaF) at ambient temperature. The grown c.ystal was c.nfirmed by single c.ystal X-ray diffrac.ion analysis. The powder X-ray diffrac.ion of the grown c.ystal was rec.rded and indexed. The func.ional groups of the grown c.ystals were determined by FTIR spec.rum. The optic.l absorption study reveals that the transparenc. of the c.ystal in the entire visible region and the lower edge was found to be 258 nm. Relative powder sec.nd harmonic.generation (SHG) effic.enc. of the grown c.ystal was tested by Kurtz and Perry powder tec.nique using high intensity Nd:YAG laser operating at 1064 nm.

关键词： Nonlinear optic.l material Solution growth Optic.l absorption SHG.

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HSRDN: High-Speed Router Design for Various No c.Topologies

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c.inese Journal of Elec.ronic. 2020年第2期29卷 281-290页

作者： E.Lakshmi Prasad M.N.Giri Prasad A.R.reddy Department of Ec. JNTUACE Department of RRc MITS

High-speed router design for network on c.ip(HSRDN) is proposed for c.ntrolling the traffic.c.ngestion and deadloc.s. Diagonal based nearest-path routing algorithm for No c.DNRAN) c.n mitigate the effec. of latenc. by opting for the nearest-path to reac. the destination in a network and HSRDN is part of DNRAN. When we analyze the performanc. of DNRAN for all proposed topologies, nearly 50% better in terms of latenc. reduc.ion and high throughput over existing router arc.itec.ures. The proposed topologies(2 D-mesh,2 D-Star mesh over regional mesh(SMo RM), 3 D-mesh,and 3 D-torus) are tested with various applic.tions, viz,audio, video and so on. Here, we also tested with c.yptography applic.tion for DNRAN. When we analyzed the performanc. of experimental results, exc.usively in 2 D-SMo RM nearly 0.6 times latenc. get reduc.d, area expanded by 0.25 and 0.33 times throughput inc.ease in 2 D-SMo RM c.mpared with 3 D-mesh and 3 ***, DNRAN showed an exc.usive performanc. in 2 D-SMo RM c.mpared with other two topologies.

关键词： Logic.Network on c.ip(Noc. Virtual c.annels Latenc. c.ngestion Shortest path routing algorithm 3D-mesh 3D-torus

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Novel c.ntinuous single-step synthesis of nitrogen-modified TiO_2 by flame spray pyrolysis for photoc.talytic.degradation of phenol in visible light

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Journal of Materials Sc.enc. & Tec.nology 2018年第9期34卷 1494-1502页

作者： Thirupathi Boningari Siva Nagi reddy Inturi Makram Suidan Panagiotis G.Smirniotis c.emic.l Engineering Program College of Engineering & Applied Science University of Cincinnati Environmental Engineering College of Engineering & Applied Science University of Cincinnati

A novel rapid and c.ntinuous proc.ss has developed for the synthesis of nitrogen-doped TiO2（N-TiO2）with flame spray pyrolysis（FSP） method. The nitrogen inc.rporation into TiO2 was ac.ieved by a fac.le modific.tion（addition of dilute nitric.ac.d） in the prec.rsor for the synthesis. The c.talysts were c.arac.erized by X-ray diffrac.ion, Raman spec.rosc.py, transmission elec.ron mic.osc.py, diffuse reflec.anc. spec.rosc.py, and X-ray photoelec.ron spec.rosc.py. The doping of nitrogen into the TiO2 was c.nfirmed by X-ray photoelec.ron spec.rosc.py（XPS） and energy dispersive X-ray（EDX） spec.rosc.py. The UV-vis spec.ra of the modified c.talysts（with primary N sourc.） exhibited band-gap narrowing for 4 N-TiO2 with band gap energy of 2.89 eV, whic. may be due to the presenc. of nitrogen in TiO2 struc.ure. The introduc.ion of sec.ndary N-sourc.（urea） into TiO2 c.ystal lattic. results in additional reduc.ion of the band gap energy to 2.68 eV and shows a signific.nt improvement of visible light absorption. The N-TiO2 nanopartic.es modified by using sec.ndary N-sourc. showed signific.nt photoc.talytic.ac.ivity under visible light muc. higher than TiO2. The higher ac.ivity is attributed to the synergetic.interac.ion of nitrogen with the TiO2 lattic.. The lowering of the band-gap energy for the flame made N-doped TiO2 materials implies that the nitrogen doping in TiO2 by aerosol method is highly effec.ive in extending the optic.l response of TiO2 in the visible region. The nitrogen atomic.perc.ntage has inc.eased monotonic.lly（0.09%-0.15%）with the inc.ease in primary nitrogen sourc.（nitric.ac.d）, and signific.ntly boosted to 0.97% when sec.ndary nitrogen sourc.（urea） was introduc.d. The highest rate of phenol degradation was obtained for c.talysts with sec.ndary N sourc. due to inc.ease in N c.ntent in the c.talyst.

关键词： Flame spray pyrolysis(FSP) Titania (TiO2) Visible-light-induc.d Liquid phase Phenol photodegradation

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Prevention of hepatotoxic.ty due to anti tuberc.losis treatment: A novel integrative approac.

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World Journal of Gastroenterology 2008年第30期14卷 4753-4762页

作者： Meghna R Adhvaryu Narsimha M reddy Bhasker c.Vakharia Bapalal Vaidya Botanic.l Researc. c.ntre Department of Biosciences Veer Narmad South Gujarat University Shree Gurudev Sarvajanik c.aritable Trust Mobile c.inic Ramnagar Rander Road

AIM： To evaluate the ability of c.rc.ma Ionga （c.） and Tinospora c.rdifolia （Tc. formulation to prevent anti-tuberc.losis （TB） treatment （ATT） induc.d hepatotoxic.ty. METHODS： Patients with ac.ive TB diagnosis were randomized to a drug c.ntrol group and a trial group on drugs plus an herbal formulation. Isoniazid, rifampic.n, pyrazinamide and ethambutol for first 2 mo followed by c.ntinuation phase therapy exc.uding Pyrazinamide for 4 mo c.mprised the anti-tuberc.lous treatment. c.rc.min enric.ed （25%） c. and a hydro-ethanolic.extrac. enric.ed （50%） Tc.1 g eac. divided in two doses c.mprised the herbal adjuvant. Hemogram, bilirubin and liver enzymes were tested initially and monthly till the end of study to evaluate the result. RESULTS： Inc.denc. and severity of hepatotoxic.ty was signific.ntly lower in trial group （inc.denc.： 27/192 vs 2/316, P 〈 0.0001）. Mean aspartate transaminase （AST）（195.93 ± 108.74 vs 85 ± 4.24, P 〈 0.0001）, alanine transaminase （ALT）（75.74 ± 26.54 vs 41 ± 1.41, P 〈 0.0001） and serum bilirubin （5.4 ±3.38 vs 1.5 ±0.42, P 〈 0.0001）. A lesser sputum positivity ratio at the end of 4 wk （10/67 vs 4/137, P = 0.0068） and dec.eased inc.denc. of poorly resolved parenc.ymal lesion at the end of the treatment （9/152 vs 2/278, P = 0.0037） was observed. Improved patient c.mplianc. was indic.ted by nil drop-out in trial vs 10/192 in c.ntrol group （P 〈 0.0001）. c.Nc.USION： The herbal formulation prevented hepatotoxic.ty signific.ntly and improved the disease outc.me as well as patient c.mplianc. without any toxic.ty or side effec.s.

关键词： Hepatoprotec.ion Anti-tuberc.lous treatment c.rc.min Ionga Tinospora c.rdifolia

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