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Influence of Rice Genotypes on Folding and Spinning Behaviour of Leaffolder(Cnaphalocrocis medinalis) and Its Interaction with Leaf Damage

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Rice science 2013年第6期20卷 442-450页

作者： m.PUNITHAVALLI N.m.mUTHUKRISHNAN m.BALAJI RAJKUmAR Sugarcane Breeding Institute Agricultural College & Research Institute Central Institute of Subtropical Horticulture

Folding and spinning behavior of Cnaphalocrocis medinalis （Guenee）（Lepidoptera： Pyralidae） in different categories of rice genotypes viz., resistant, susceptible, hybrid, scented, popular and wild rice genotypes were significantly different. Longer leaf selection time and folding time per primary fold; shorter primary fold and whole leaf fold; lower number of binds per primary fold and whole leaf fold were recorded in resistant and wild rice genotypes. In the correlation analysis, it was found that the leaf folding parameters were positively correlated to leaf folder damage whereas the leaf spinning parameters were negatively correlated. Similarly, the morphological characters differed significantly among the chosen genotypes and were related to leaffolder damage. The leaf width and total productive tiller number were positively correlated to leaffolder infestation. Results also indicated that the trichome density and length, leaf length and plant height might contribute to resistance whereas total number of green leaves had no effect on leaffolder infestation. In the scatter plot analysis between leaf folding and spinning characters and leaffolder damage, the genotypes were separated into four groups viz., resistant （TKm6, Ptb 33, LFR831311, Oryza rhizomatis and O. minuta）, moderately resistant （ASD16 and CORH1）, moderately susceptible （ADT36, Pusa Basmati and CB200290） and susceptible （IR36 and TN1）. The present investigation proved that the leaf morphology viz., leaf length and width, plant height and trichome density and length may play a vital role in resistance against rice leaffolder.

关键词： rice genotype Cnaphalocrocis medinalis folding and spinning behaviour leaf morphology

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multilayer ceramic coating for impeding corrosion of sintered NdFeB magnets

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Journal of Rare Earths 2009年第6期27卷 1003-1007页

作者： A.Ali A.Ahmad K.m.Deen Department of metallurgical & materials Engineering University of Engineering & Technology Department of metallurgy and materials Engineering CEET University of the Punjab

Sintered NdFeB magnets have complex microstructure that makes them susceptible to corrosion in active *** current paper evaluated the anticorrosion characteristics of multilayer titanium nitride ceramic coating applied through cathodic arc physical vapour deposition(CAPVD) for protection of sintered NdFeB permanent *** performance of ceramic coating was compared to the electrodeposited nickel coating having a copper *** impedance spectroscopy(EIS) and cyclic polar...

关键词： sintered NdFeB magnets multilayer ceramic coating permeable defects rare earths

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Rethinking big data in a networked world

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Frontiers of Computer science 2016年第6期10卷 965-967页

作者： Lionel m. NI Haoyu TAN Jiang XIAO Department of Computer and Information science University of Macao Macao China Fok Ying Tung Graduate school Hong Kong University of Science and Technology Hong Kong China

Since the early 21st century, big data has drawn much attention from both academia and industry. In the last decade of collecting massive data, seeking innovative applications, and developing powerful technologies, the major focus of the research and engineering in big data has shifted substantially in many aspects. It is time to rethink about this fuzzy term to make clear the upcoming opportunities and the most urgent challenges.

关键词： Cloud Computing Deep Neural Network Unstructured Data Social Data Natural Language Processing Technique

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Generation of sub-wavelength and super-resolution longitudinally polarized non-diffraction beam using lens axicon

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Chinese Optics Letters 2008年第10期6卷 785-787页

作者： K.B.Rajesh P.m.Anbarasan Department of Physics Periyar UniversitySalem 636011India

It is well known that a light spot of sub-wavelength will diverge in all directions. In this letter, A method is presented for generating sub-wavelength （0.44λ） longitudinally polarized beam, which propagates without divergence over lengths of about 2λ in free space. This is achieved by a high numerical aperture （NA） lens axicon that utilizes spherical aberration to duplicate the performance of an axicon and to create an extended focal line.

关键词： Azimuthally polarized beams Fresnel zones High numerical aperture optics Laser beams Optical data storage Superresolution

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magnetic interaction in the metamaterial/magnet system

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Chinese Physics B 2014年第8期23卷 537-539页

作者： m.K.Alqadi F.Y.Alzoubi Department of Physics Jordan University of Science and Technology

The stability of the magnetic dipole and the metamaterial with negative permeability are investigated. Analytical expressions of the interaction force and stiffness of the magnetic line and metamaterial with negative permeability are derived. The repulsive force between the magnetic line and the metamaterial exceeds the value of the maximum force in the magnet-superconductor system.

关键词： metamaterial interaction energy negative permeability

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Eco-Friendly Phyto-Synthesis of Silver Nanoparticles Using Jatropha Seedcake Extract

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Chinese Physics Letters 2013年第12期30卷 165-169页

作者： Anjali Bose Haresh Keharia m.P.Deshpande BRD school of Biosciences Sardar Patel MaidanVadtal RoadP.O.Box 39Satellite CampusSardar Patel UniversityVallabh Vidyanagar 388120GujaratIndia Department of Physics Sardar Patel UniversityVallabh Vidyanagar 388120GujaratIndia

Phytosynthesis of metal nanoparticles is gaining importance due to their biocompatibility,low toxicity and eco-friendly *** the present study,an aqueous extract of Jatropha seedcake(Jsc)is assessed as a reducing and stabilizing agent for the synthesis of silver nanoparticles(AgNPs).The maximum reduction of silver ions occur when 1 mm AgNO_(3) solution is treated with 0.1 volume fraction of Jsc extract in boiling water bath for 10 *** synthesis of AgNPs is monitored by the excitation of surface plasmon resonance using UV-vis *** AgNPs are found to be mono-dispersed,spherical with average particle size of 10.48±74 nm when analyzed by transmission electron *** selected area electron diffraction(SAED)ring pattern indicated the polycrystalline nature of the *** x-ray diffraction data further confirm the presence of characteristic(111),(200),(220),(311)and(222)diffraction planes of face centered cubic structure,and the calculated lattice parameter comes out to be 4.083Å.FTIR analysis reveals the involvement of proteins and phenols in reduction and stabilization of *** synthesized AgNPs have significant antibacterial action on both the Gram positive and negative bacteria.

关键词： silver synthesis stabilization

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Plasma and Gaseous Nitrocarburizing of C60W Steel for Tribological Applications

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材料热处理学报 2004年第5期25卷 338-342页

作者： m. mirjani F. Ashrafizadeh A. Shafyei Iranian Surface Research & Engineering Centre (ISREC) Isfahan Iran Dept. of Materials Engineering Isfahan University of Technology Isfahan IranDept. of Materials Engineering Isfahan University of Technology Isfahan Iran.

A comparison has been made between plasma and gas nitrocarburizing processes for C60W steel in terms of structural features of the layers and the tribological properties of the specimens. Gaseous treatments were performed in a sealed quench industrial furnace in optimized process cycles. For plasma nitrocarburizing, a semi - industrial size unit was operated at a range of process parameters. Experimental results indicate that increasing the treatment time increases the thickness of the compound layer but lowers the wear resistance. Plasma treatment produced a more effective case depth compared with gaseous process, providing a better uniformity. Analysis of X-ray diffraction patterns indicated that the compound layer in gas nitrocarburizing consisted of both e and y’ phases, whereas in plasma nitrocarburizing the e phase was not detected.

关键词： C60W钢等离子氮碳共渗气态氮碳共渗摩擦学

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Application of the Second Born Approximation to Excitation of Hydrogen Atoms by Protons and Antiprotons Impact

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Chinese Physics Letters 2008年第10期25卷 3635-3638页

作者： Reda S. Tantawi Samia m. Said Department of mathematics Faculty of Science Zagazig University Zagazig Egypt Department of Basic Engineering sciences Faculty of Engineering Sana'a Universi Sana'a Yemen

We present and compare total cross sections for excitation in collisions of protons and antiprotons with hydrogen atoms in the 2s state. Calculations axe performed in the framework of the second Born approximation, in the energy range of 5-1000 keV. We apply the usual approach of the second Born approximation, which approximates the summation raised by retaining few terms, as well as another approach approximates all energies corresponding to the intermediate states to that corresponding to the initial state. The annihilation effect in the case of the antiproton collision is investigated. We compare the results with the previous theoretical calculations.

关键词： the power-law exponents precipitation durative abrupt precipitation change

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Dynamic Recrystallization of a Cr-Ni-mo-Cu-Ti-V Precipitation Hardenable Stainless Steel

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Journal of materials science & Technology 2007年第6期23卷 775-778页

作者： A.momeni A.Shokuhfar S.m.Abbasi Advanced materials Research Lab Mechanical DepartmentKNT University of TechnologyTehranIran

In this research, the dynamic recrystallization （DRX） behavior of an as-cast precipitation hardenable （PH） stainless steel was investigated by conducting hot compression tests at temperatures between 950-1150℃ and under strain rates of 0.001-1 s^-1. The flow stress curves show that the DRX is responsible for flow softening during hot compression. The effects of temperature and strain rate on the strain and stress corresponding to peak point （εp and σp） of flow curve were analyzed individually. It is realized that, they increase with strain rate and decrease with temperature. The relationship between Zener-Hollomon parameter （Z） and εp was investigated and the equation of εp=4.3×10^-4^0.14 was proposed. The strain for the maximum rate of DRX （εmax） was determined under different deformation conditions. Therefore, it is realized that it increases with Z parameter and vise versa. On the basis of obtained results, the equation of εmax=9.5 × 10^-4Z0.12 was proposed.

关键词： Dynamic recrystallization Hot compression Precipitation hardening stainless steel

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magnetohydrodynamic Activity During Limiter Biasing on the CT-6B Tokamak

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Chinese Physics Letters 2001年第3期18卷 393-395页

作者： KHORSHID Pejman WANG Long YANG Xuan-Zong FENG Chun-Hua ZHANG Peng-Yun QI Xia-Zhi ROUHANI Shahriar RAHImITABAR m.Reza AGHAmIR m.Farzin GHORANNEVISS mahmud HANTEZADEH m.Reza Institute of Physics Chinese Academy of SciencesBeijing 100080 Plasma Physics Research Centre Azad UniversityTehranIran Institute for Studies in Theoretical Physics and mathematics TehranIran

magnetohydrodynamic phenomena in the CT-6B Tokamak based on mirnov oscillations have been investigated by applying the limiter biasing potentials and changing the vacuum chamber gas pressure and plasma *** results show that setting up a radial electric field at the plasma edge could drive electromagnetic instabilities in the tokamak *** oscillation frequency upon application of a positive bias decreases about 10-15%and then after a delay time,τ_(d)=2.5-3 ms increases about 20-25%with respect to their value without *** the negative bias regime the oscillation frequency increases about 10%in 1 ms after the application of the bias *** poloidal rotation velocity changes during two steps are related to its link with the radial electric field and the time scale of the density *** frequency of oscillations increases with the increasing chamber gas pressure and decreases with the increasing the outward plasma displacement.

关键词： Tokamak oscillation tokamak

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