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Episodes 2004年第2期27卷 119-124页

作者： B.k.sharma A.M.Bhola DepartmentofGeology UniversityofDelhiDelhi-110007India.

The metasediments in the Chamba region experienced three phases of deformation: DF1, DF2 and *** quartz veins are co-folded with the F2 crenulation folds. Their geometric and tectonic significance is studied by microstructures and shortening adjacent to the discrete crenulation cleavage, s2. Microstructures of folded vein segments, their geometric changes and truncation to cleavage (s2) are mainly due to pressure-solution phenomena and the estimated volume loss from reconstructed vein segments range from 16 to 25.5%,which is closely related to volume decrease (26%) calculated from the polydeformed slates of North Wales areas.

关键词：显微结构变质沉积物地质学石英纹理

Human-like stereo sensors using plasmonic antenna embedded MZI with space–time modulation control[Invited]

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Chinese Optics Letters 2021年第10期19卷 29-37页

作者： A.Garhwal A.E.Arumona P.Youplao k.Ray I.s.Amiri P.Yupapin Amity school of Engineering&Technology Amity University RajasthanJaipurIndia Computational Optics Research Group Advanced Institute of Materials ScienceTon Due Thang UniversityHo Chi Minh CityVietnam Faculty of Applied sciences Ton Due Thang UniversityHo Chi Minh CityVietnam Division of Computational Physics Institute for Computational ScienceTon Due Thang UniversityHo Chi Minh CityVietnam Amity school of Applied sciences Amity University RajasthanJaipurIndia

A micro stereo sensor system is proposed for human sensors,where eyes,ears,tongue,nose,body,and brain are applied by six panda rings embedded in a Mach–Zehnder interferometer(MZI).The input power is applied to the upper branch of MZI and propagates within the *** six antennas(sensors)are formed by the whispering gallery modes of the panda *** space–time modulation signal is applied to the MZI lower *** modulated stereo signals can be configured as the plasmon(electron)spin orientations,which can be identified and applied for quantum codes and quantum consciousness.

关键词： micro-optical devices electro-optical devices integrated optics devices

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spatiotemporal detection of land use/land cover changes and land surface temperature using Landsat and MODIs data across the coastal kanyakumari district, India

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Geodesy and Geodynamics 2023年第2期14卷 172-181页

作者： s.Chrisben sam Gurugnanam Balasubramanian Centre for Applied Geology The Gandhigram Rural Institute Deemed to Be UniversityDindigulTamil NaduIndia

This study assesses the changes in land use/land cover(LULC) and land surface temperature(LsT) to identify their impacts from 2000 to 2020 along the coast of kanyakumari district, India using remote sensing techniques. Landsat images are used to estimate the LULC changes and the MODIs data for *** Maximum Likelihood Classification(MLC) method is used, and the LULC is classified into six categories: Agriculture Land, Barren Land, salt Pan, sandy Beach, settlement, and Waterbody. Within the two decades of the present change detection study, upheave in the settlement area of 49.89% is noticed, and the Agriculture Land is exploited by 20.09%. salt Pan emits a high LsT of 31.57°C, and the Waterbodies are noticed with a low LsT of 28.9°C. However, the overall rate of LsT decreased by 0.56°C during this period. This study will help policymakers make appropriate planning and management to overcome the impact of LULC and LsT in the forthcoming years.

关键词： Land use/land cover Land surface temperature Landsat MODIs and remote sensing

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Ambipolar Diffusion in Direct-Current Positive Column with Variations in Radius of Discharge Tube

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Chinese Physics Letters 2006年第9期23卷 2498-2501页

作者： D. AkBAR s. BILIkMEN Department of Physics Middle East Technical University 06531 Ankara Turkey

The ambipolar diffusion and argon ion mobility as functions of the reduced electric field and pressure times the tube radius are investigated in a weakly ionized non-uniform glow discharge plasma system. In particular, the variable cross section at the same discharge tube on the ambipolar diffusion coefficient shows a more noticeable effect than the effects from the ion mobility. As the diffusion length A increases, the ambipolar diffusion Da increases. However, it decreases as the discharge current is increased.

关键词： GLOW-DIsCHARGE MODEL

structural and magnetic properties of sm(Co_(0.7)Fe_(0.1)Ni_(0.12)Zr_(0.04)B_(0.04))_(7.5) melt spun isotropic and anisotropic ribbons

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Journal of Rare Earths 2012年第7期30卷 691-695页

作者： sofoklis s. Makridis Wei Tang Department of Mechanical Engineering University of Western Macedonia GR-50100 Kozani Greece Division of Materials sciences & Engineering Ames Lab of DOE Iowa State University Ames IA 450011 USA

We investigated the structural and magnetic properties of sm（Co0.7Fe0.1Ni0.12Zr0.04B0.04）7.5 melt spun ribbons. samples were arc melted then melt spun at 37 m/s up to 55 m/s to obtain ribbon for powdering. Annealing was performed in argon atmosphere for 30- 75 min at 600-870 oC. In as-spun ribbons the hexagonal smCo7 （TbCu7-type of structure） of crystal structure was determined from x-ray diffraction patterns, while fcc-Co has been identified as a secondary phase. After annealing, the 1：7 phase of the as-spun ribbons transformed into 2：17 and 1：5 phases. X-ray patterns for as-milled powders exhibited very broad peaks making it difficult to identify a precise structure but repre-sented the 1：7 structure after annealing at low temperature （650 oC）. TEM analysis showed a homogeneous nanocrystalline microstructure with average grain size of 30-80 nm. Coercivity values of 15-27 kOe were obtained from hysteresis loops traced up to a field of 5 T. The co-ercivity decreased as temperature increases, but it maintained values higher than 5 kOe at 380 oC. The maximum energy product at room temperature increased, as high as 7.2 MGOe, for melt-spun isotropic ribbons produced at higher wheel speeds. Anisotropic ribbons had a maximum energy product close to 12 MGOe.

关键词： melt-spinning microstructure rare-earth permanent magnet coercivity

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New principle for aerodynamic heating

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National science Review 2018年第5期5卷 606-607页

作者： Bohua sun Elaine s.Oran Department of Mechanical Engineering Cape Peninsula University of Technology Department of Aerospace Engineering Universityof Maryland

Fluid flows that we encounter in nature are mostly turbulent. To date, the physics of turbulence has not been clear and is still considered as ‘the last unsolved problem in classical physics’. Its complex dynamical process reflects the strong nonlinearity of the Navier–stokes equation,which is a millennium math problem. The modeling and control of developed turbulence and the onset of turbulence, ***, are still bottlenecks in engineering applications such as aeronautics,astronautics and navigation.

关键词： New principle for aerodynamic heating DNs

stratification of selected hydrolytic enzyme activities in the sediment in two lakes in Finland

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International Journal of sediment Research 2012年第2期27卷 250-258页

作者： Mika A.kHkNEN Risto HAkULINEN Department of Food and Environmental sciences Division of MicrobiologyPOB 56Viikki BiocenterHelsinki UniversityFIN 00014Finland

To investigate the stratification of hydrolytic enzyme activities and importance of subsurface layers in depolymerization of detritus biopolymers,nine hydrolytic enzyme activities involved in the cycling of carbon,phosphorus,nitrogen and sulphur were measured in various sediment layers and their extracts at kylaniemi in Lake saimaa in southern Finland and in Lake Ahvenjarvi in northern Finland. The results show that for each lake all nine hydrolytic enzyme activities were higher in all sediment layers than in comparable sediment extracts indicating that the major part of enzymes was bound to the sediment particles in all layers in both ***,P-cellobiosidase,activities did not show any gradient with sediment depth at kylaniemi in Lake saimaa indicating that there was rapid turnover of carbohydrates in the entire sediment *** activities of acetate esterase,butyrate esterase,phosphomonoesterase,aminopeptidase,N-acetyl glucosaminidase,sulphatase andβ-glucosidase in the deepest layers were 19-53%of those in the surface sediment indicating that depolymerization of biopolymers involved in the cycling of carbon,nitrogen,phosphorus and sulphur was substantial in subsurface sediment.

关键词： Detritus Hydrolytic enzyme activities Lake sediment

Microstructural relation of macerals with mineral matter in coals from Ib valley and Umaria, son-Mahanadi basin, India

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International Journal of Coal science & Technology 2017年第2期4卷 191-197页

作者： Vivek Mishra k. N. singh CsIR - National Metallurgical Laboratory Jamshedpur 831007 India school of studies in Earth science Vikram UniversityUjjain 456010 India

Coal petrology provides significant inputs for the industrial utilisation of coal and for broad understanding the coal formation and diagenesis. The present paper entails the results of the investigations carded out on the selected coal samples, from Ib valley and Umaria coalfield, using scanning electron microscope （sEM） and X-ray diffraction （XRD） to study the surface microstructures and minerals present in them and the relationship of the finely dispersed mineral matter with the organic constituents. This would further help in evaluating the distribution and chemical character of the mineral matter occurring within the maceral types. Ib valley and Umaria coals are typical Indian （Lower Gondwana） non-coking coals and only scanty data is available on sEM study of these coals. Under sEM examination, it manifests that, the mineral matters of these coal occur as deep intergrowth, massive impregnation, superficial mounting, filling and depletion of micropores, mechanical cavity filling and fusinitic cavity filling.

关键词： Coal sEM XRD Umaria coal Ib valley coal India

Effect of NaCl Doping on Growth, Characterization, Optical and Dielectric Properties of Potassium Hydrogen Phthalate (kHP) Crystals

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Advances in Materials Physics and Chemistry 2015年第10期5卷 399-407页

作者： R. k. Raju s. M. Dharamaprakash H. s. Jayanna Department of Physics Kuvempu University Shankaraghatta India Department of Physics Mangalore University Mangalore India

single crystals of sodium chloride doped Potassium Hydrogen Phthalate (kHP) were grown from aqueous solution by slow evaporation method at room temperature. The powder X-ray diffraction analysis was carried out and lattice cell parameters estimated. FTIR studies confirm the presence of functional groups and slight distortion of groups due to doping of sodium metal. UV-visible and photoluminescence spectral studies revealed to understand the optical properties. The NLO property of grown crystals has been confirmed by kurtz powder technique. Dielectric studies of samples showed that dielectric constant decreased slowly with increasing frequency and attains saturation at higher frequencies.

关键词： Crystal Growth second Harmonic Generation Lattice Parameters Dielectric Constant Photoluminescence

Proof of kochen-specker Theorem： Conversion of Product Rule to sum Rule

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Chinese Physics Letters 2009年第7期26卷 29-31页

作者： s.P. Toh Hishamuddin Zainuddin Faculty of Applied science Inti International University College Persiaran Perdana BBN Putra Nilai 71800 Nilai Negeri Sembilan Malaysia Laboratory of Computational science and Informatics Institute for Mathematical Research Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia

Valuation functions of observables in quantum mechanics are often expected to obey two constraints called the sum rule and product rule. However, the kochen-specker （ks） theorem shows that for a Hilbert space of quantum mechanics of dimension d ≥ 3, these constraints contradict individually with the assumption of value definiteness. The two rules are not irrelated and Peres [Found. Phys. 26 （1996）807] has conceived a method of converting the product rule into a sum rule for the case of two qubits. Here we apply this method to a proof provided by Mermin based on the product rule for a three-qubit system involving nine operators. We provide the conversion of this proof to one based on sum rule involving ten operators.

关键词： kochen-specker Theorem Proof Product Rule sum Rule