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marker-Assisted Pyramiding of Genes Conferring resistanceAgainst Bacterial Blight and Blast Diseases into Indian riceVariety mTU1010

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rice science 2016年第6期23卷 306-316页

作者： k.arunakumari c.v.durgarani v.satturu k.r.sarikonda p.d.r.chittoor b.vutukuri g.s.laha a.p.k.nelli s.gattu m.jamal a.prasadbabu s.hajira r.m.sundaram Institute of Biotechnology Professor Jayashankar Telangana State Agricultural UniversityRajendranagarHyderabad 500030India Andhra Pradesh rice research Institute Acharya N.G.Ranga Agricultural UniversityMaruteruWest Godavari District 534122India Agriculture research Station Acharya N.G.Ranga Agricultural UniversityNellore 524004India Crop Improvement Section ICAR-Indian Institute of Rice ResearchRajendranagarHyderabad 500030India Urmatt Ltd.Wang Chai Chaingrai 57210Thailand

Two major bacterial blight （BB） resistance genes （Xa21 and xa13） and a major gene for blastresistance （Pi54） were introgressed into an Indian rice variety mTU1010 through marker-assistedbackcross breeding. Improved Samba mahsuri （possessing Xa21 and xa13） and NLr145 （possessingPi54） were used as donor parents. marker-assisted backcrossing was continued till BC2 generationwherein PCr based functional markers specific for the resistance genes were used for foregroundselection and a set of parental polymorphic microsatellite markers were used for background selectionat each stage of backcrossing. Selected BC2F1 plants from both crosses, having the highest recoveriesof mTU1010 genome （90% and 92%, respectively）, were intercrossed to obtain intercross F1 （ICF1） plants,which were then selfed to generate 880 ICF2 plants possessing different combinations of the BB andblast resistance genes. Among the ICF2 plants, seven triple homozygous plants （xa13xa13Xa21Xa21Pi54Pi54）with recurrent parent genome recovery ranging from 82% to 92% were identified. All the seven ICF2plants showed high resistance against the bacterial blight disease with a lesion lengths of only 0.53–2.28 cm, 1%–5% disease leaf areas and disease scoring values of ‘1’ or ‘3’. The seven ICF2 plants wereselfed to generate ICF3, which were then screened for blast resistance, and all were observed to behighly resistant to the diseases. Several ICF3 lines possessing high level of resistance against BB andblast, coupled with yield, grain quality and plant type on par with mTU1010 were identified and advanced forfurther selection and evaluation.

关键词： gene pyramiding bacterial blight resistance blast resistance rice marker-assistedbackcross breeding

Infection of Early and Young Callus Tissues of Indica rice BPT5204 Enhances regeneration and Transformation Efficiency

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rice science 2013年第6期20卷 415-426页

作者： P.mANImArAN G.rAVI KUmAr m.rAGHUrAmI rEDDY S.JAIN T.BHASKAr rAO S.K.mANGrAUTHIA r.m.sundaram S.rAVICHANDrAN S.m.BALACHANDrAN Biotechnology Laboratory Crop Improvement SectionDirectorate of Rice ResearchRajendranagarHyderabad 500030India

A rapid and reproducible method to develop transgenic plants with enhanced transformation efficiency using Agrobacterium has been developed for the elite indica rice variety BPT 5204. Different rice calli aged from 3 to 30 d were co-cultivated with pre-incubated Agrobacterium suspension culture （LBA4404： pSB1, pCAmBIA1301） and incubated in dark for 3 d. Based on the transient GUS gene expression analysis, 6-day-old young calli showed high transformation frequency followed by 21-day-old ones. Thus, both 6-and 21-day-old calli were used for assessing the stable transformation efficiency. It was observed that the 6-day-old young transformed calli showed about 2-fold higher regeneration frequency when compared with 21-day-old calli. The transformation efficiency was enhanced for young calli to 5.9% compared with 0.8% of the 21-day-old calli. molecular and genetic analysis of transgenic plants （To） revealed the presence of 1-2 copies of T-DNA integration in transformants and it follows mendalian ratio in T1 transgenic plants. From the present study, it was concluded that the development of transgenic rice plants in less duration with high regeneration and transformation efficiency was achieved in BPT 5204 by using 6-day-old young calli as explants.

关键词： Agrobacterium-mediated transformation meihod rice callus transformation transgenicplant indica rice

Experimental Studies on the Thermal Performance of a Parabolic Dish Solar receiver with the Heat Transfer Fluids SiC+ Water Nano Fluid and Water

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Journal of Thermal Science 2017年第3期26卷 263-272页

作者： D.r.rajendran E.Ganapathy sundaram P.Jawahar Department of mechanical Engineering Adhiparasakthi Engineering CollegeMelmaruvahur-603319Tamil NaduIndia Department of mechanical Engineering Velammal Engineering CollegeChermai-600066Tamil NaduIndia Department of Production Engineering Velammal Engineering CollegeChennai-600066Tamil NaduIndia

An experimental investigation has been carried out with aa point focusing dish reflector of 12 square meters aperture area, exposed to the average direct normal irradiations of 810 W/m^2. This work focuses on enhancinge the energy and exergy efficiencies of the cavity receiver by minimizing the temperature difference between the wall and heat transfer fluids. Two heat transfer fluids Water and SiC + water nano fluid have been prepared from 50 nm particle size and 1% of volume fraction, and experimented separately for the flow rates of 0.2 lpm to 0.6 lpm with an interval of 0.1 lpm. The enhanced thermal conductivity of nano fluid is 0.800115 W/mK with the k_(eff)/k_b ratio of 1.1759 determined by using the Koo and Kleinstreuer correlation. The maximum attained energy and exergy efficiencies are 29.14% and 24.82% for water, and 32.91% and 39.83% for SiC+water nano fluid. The nano fluid exhibits enhanced energy and exergy efficiency of 12.94% and 60.48% than that of water at the flow rate of 0.5 lpm. The result shows that the system with SiC+Water produces higher exergy efficiency as compared to energy efficiency; in the case of water alone, the energy efficiency is higher than exergy efficiency.

关键词： Direct Normal Irradiation cavity receiver heat transfer fluids nano fluid exergy factor

Liquid vaporization under thermodynamic phase non-equilibrium condition at the gas-liquid interface

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Science China(Technological Sciences) 2020年第12期63卷 2649-2656页

作者： WANG XingJian LAFON Patrick sundaram Dilip YANG Vigor Department of mechanical and Civil Engineering Florida Institute of TechnologyMelbourneFlorida 32901USA Department of mechanical and Nuclear Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA School of Aerospace Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Liquid vaporization under thermodynamic phase non-equilibrium condition at the gas-liquid interface is investigated over a wide range of fluid state typical of many liquid-fueled energy conversion systems. The validity of the phase-equilibrium assumption commonly used in the existing study of liquid vaporization is examined using molecular dynamics theories. The interfacial mass flow rates on both sides of the liquid surface are compared to the net vaporization rate through an order-of-magnitude *** indicated that the phase-equilibrium assumption holds valid at relatively high pressures and low temperatures,and for droplets with relatively large initial diameters(for example,larger than 10 μm for vaporizing oxygen droplets in gaseous hydrogen in the pressure range from 10 atm to the oxygen critical state). Droplet vaporization under superheated conditions is also explored using classical binary homogeneous nucleation theory,in conjunction with a real-fluid equation of state. It is found that the bubble nucleation rate is very sensitive to changes in saturation ratio and pressure;it increases by several orders of magnitude when either the saturation ratio or the pressure is slightly increased. The kinetic limit of saturation ratio decreases with increasing pressure,leading to reduced difference between saturation and superheat conditions. As a result,the influence of nonequilibrium conditions on droplet vaporization is lower at a higher pressure.

关键词： liquid vaporization droplet vaporization superheated vaporization thermodynamic phase equilibrium thermodynamic phase non-equilibrium vapor nucleation

Creation of Super Long Transversely Polarized Optical Needle Using Azimuthally Polarized multi Gaussian Beam

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Chinese Physics Letters 2016年第6期33卷 29-32页

作者： C.m.sundaram K.Prabakaran P.m.Anbarasan K.B.rajesh A.m.musthafa Department of Physics Periyar University Department of Physics Mahendra Arts and Science College(Autonomous) Department of Physics Chikkanna Government Arts College Department of General Studies(Physics Group) Jubail University College(Male Branch)Royal Commission of Jubail

The intensity distribution in the focal region of a high-NA lens for the incident azimuthally polarized multi Gaussian beam transmitted through a multi belt spiral phase hologram is studied on the basis of the vector diffraction theory. Here we report a new method used to generate a needle of transversely polarized light beam with sub diffraction beam size of 0.366A that propagates without divergence over a long distance of about 22A in free space. We also expect that such a light needle of transversely polarized beam may find its applications in utilizing optical materials or instruments responsive to the transversal field only.

关键词： of on it for Creation of Super Long Transversely Polarized Optical Needle Using Azimuthally Polarized multi Gaussian Beam in that is

Protective effect of Prostane in experimental prostatic hyperplasia in rats

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Asian Journal of Andrology 1999年第4期1卷 175-179页

作者： S.K.mitra r.sundaram A.r.mohan S.Gopumadhavan m.V.Venkataranganna Udupa Venkatesha S.J.Seshadri S.D.Autrulikar r&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 IndiaR&D Centre The Himalaya Drug Co. Makali Banalore 562-123 India

Aim: Prostane, a polyherbal formulation, was evaluated for its efficacy on 5α-reductase inhibition, α-adrenergic anta-gonistic activity and testosterone-induced prostatic hyperplasia. methods: 5α-reductase inhibition was evaluated usingrat prostate homogenate as an enzyme source. Adrenergic antagonistic activity was evaluated using isolated rat vas def-erens. Experimental prostatic hyperplasia was induced in rats by giving testosterone 3 rog/kg sc for 21 days. re-sults: Prostane dose-dependently inhibited 5α-reductase activity and exhibited α-adrenergic antagonistic activity. Treat-ment with Prostane at 250, 500 and 750 mg/kg body wt, po for 21 days significantly reduced the prostatic weight, theepithelial height and the stromal proliferation in experimental prostatic hypertrophy. Conclusion: Prostane is effectivein the treatment of experimental prostatic hypertrophy in rats and may be passed on to clinical trials on benign prostatichypertrophy after necessary toxicological evaluations. (Asian J Androl 1999 Dec; 1: 175-179)

关键词： Prostane BPH oxidoreductases adrenergic alpha-antagonists enzyme inhibitors prostate hyperplasia

LOAD TESTING OF HYPErBOLIC PArABOLOID STEEL SPACE FrAmE

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LOAD TESTING OF HYPERBOLIC PARABOLOID STEEL SPACE FRAME

mutual Self‑regulation of d‑Electrons of Single Atoms and Adjacent Nanoparticles for Bifunctional Oxygen Electrocatalysis and rechargeable Zinc‑Air Batteries

The International Colloquium on Space Structures for Sports Buildings

作者： r.sundaram Consulting Structural Engineer and Architect 19 Kumara Krupa road Bangalore-560 001 India.

Hypar shells are one of the most efficient structures for covering large spaces especially for buildings such as Sports Stadia.A 20m×20m space structure made of steel in the shape of hyperbolic paraboloid was load tested to assess the performance of the structure.(Fig.1)The object of testing was to do a non-destructive load testing and measure deflections at various ***,the hypar shell steel frame during the load testing failed. The paper covers the details of testing and summarises the reasons for failure and remedial measures.

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来源： cnki会议评论

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Nano-micro Letters 2023年第4期15卷 40-57页

作者： sundaram Chandrasekaran rong Hu Lei Yao Lijun Sui Yongping Liu Amor Abdelkader Yongliang Li Xiangzhong ren Libo Deng College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China College of Chemistry and Bioengineering Guilin University of TechnologyGuilin 541004People’s Republic of China Shenzhen Key Laboratory of Special Functional materials Shenzhen Engineering Laboratory for Advanced Technology of CeramicsCollege of Materials Science and EngineeringGuangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen UniversityShenzhen 518060People’s Republic of China Shanghai Key Laboratory for r&D and Application of metallic Functional materials Institute of New Energy for VehiclesSchool of Materials Science and EngineeringTongji UniversityShanghai 201804People’s Republic of China Department of Design and Engineering Faculty of Science&TechnologyBournemouth UniversityPoole BH125BBDorsetUK

rechargeable zinc-air batteries(ZABs)are a promising energy conversion device,which rely critically on electrocatalysts to accelerate their rate-determining reactions such as oxygen reduction(Orr)and oxygen evolution reactions(OEr).Herein,we fabricate a range of bifunctional m-N-C(metal-nitrogen-carbon)catalysts containing m-Nx coordination sites and m/mxC nanoparticles(m=Co,Fe,and Cu)using a new class ofγ-cyclodextrin(CD)based metal-organic framework as the *** the two types of active sites interacting with each other in the catalysts,the obtained Fe@C-FeNC and Co@C-CoNC display superior alkaline Orr activity in terms of low half-wave(E1/2)potential(~0.917 and 0.906 V,respectively),which are higher than Cu@C-CuNC(~0.829 V)and the commercial Pt/C(~0.861 V).As a bifunctional electrocatalyst,the Co@C-CoNC exhibits the best performance,showing a bifunctional Orr/OEr overpotential(ΔE)of~0.732 V,which is much lower than that of Fe@C-FeNC(~0.831 V)and Cu@C-CuNC(~1.411 V),as well as most of the robust bifunctional electrocatalysts reported to *** X-ray absorption spectroscopy and density functional theory simulations reveal that the strong electronic correlation between metallic Co nanoparticles and the atomic Co-N4 sites in the Co@C-CoNC catalyst can increase the d-electron density near the Fermi level and thus effectively optimize the adsorption/desorption of intermediates in Orr/OEr,resulting in an enhanced bifunctional electrocatalytic *** Co@C-CoNC-based rechargeable ZAB exhibited a maximum power density of 162.80 mW cm^(−2) at 270.30 mA cm^(−2),higher than the combination of commercial Pt/C+ruO2(~158.90 mW cm^(−2) at 265.80 mA cm^(−2))*** the galvanostatic discharge at 10 mA cm^(−2),the ZAB delivered an almost stable discharge voltage of 1.2 V for~140 h,signifying the virtue of excellent bifunctional Orr/OEr electrocatalytic activity.

关键词： Cyclodextrin CD-mOF Single-atom catalyst Orr/OEr Zinc-air battery

Structure and magnetic properties of Cu-Ni alloy nanoparticles prepared by rapid microwave combustion method

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Transactions of Nonferrous metals Society of China 2014年第5期24卷 1467-1473页

作者： J.ArUL mArY A.mANIKANDAN L.JOHN KENNEDY m.BOUOUDINA r.sundaram J.JUDITH VIJAYA Catalysis and Nanomaterials research Laboratory Department of Chemistry Loyola College materials Division School of Advanced Sciences Vellore Institute of Technology (VIT) UniversityChennai Campus Department of Physics College of Science University of Bahrain Nanotechnology Centre University of Bahrain Department of Chemistry Presidency College

Cu-Ni alloy nanoparticles were prepared by a microwave combustion method with the molar ratios of CU2＋ to Ni2＋ as 3：7, 4：6, 5：5, 6：4 and 7：3. The as-prepared samples were characterized by XrD, Hr-SEm, EDX and VSm. XrD and EDX analyses suggest the formation of pure alloy powders. The average crystallite sizes were found to be in the range of 21.56-33.25 nm. Hr-SEm images show the clustered/agglomerated particle-like morphology structure. VSm results reveal that for low Ni content （CusNis, Cu6Ni4 and Cu7Ni3）, the system shows paramagnetic behaviors, whereas for high Ni content （Cu3Ni7 and Cu4Ni6）, it becomes ferromagnetic.

关键词： microwave combustion nanoparticles Cu-Ni alloys magnetization property