Materials Literature
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For $N$-point best-packing configurations $ω_N$ on a compact metric space $(A,ρ)$, we obtain estimates for the mesh-separation ratio $γ(ω_N,A)$, which is the quotient of the covering radius of $ω_N$ relative to $A$ and the minimum pairwise distance between points in $ω_N$. For best-packing configurations $ω_N$ that ar…
The temperature dependence of the dielectric constant of diamond has been measured over the temperature range 50-2OO"c. The value of E-ldc dT over this range is + 1 x 10-j. Details of the method of measuring the temperature coefficient of dielectric constant are also given. The magnitude and sign of c-ldc, dT for diam…
As is well known, ammonium chloride crystallizes in the cubic system, its structure being of the rock-salt type above $450^o T$. and of the cæsium chloride type below that temperature. Menzies and Mills1 found that at liquid air temperatures it shows in its Raman spectrum a strong line with a frequency shift of $183 c…
Free vibration of nanobeams including the effect of temperature change is investigated based on the exact nonlocal stress theory. By applying the variational principle, the higher order governing equation with the corresponding higher order boundary conditions is derived. The generalized differential quadrature method…
The reaction between fullerenol (F-ol) and cytochrome C (Cyt C) could be carried out to form a nonphosphorescence compound using tween-80 as photosensitizer which causes the sharp quenching of room temperature phosphorescence (RTP) of F-ol. Bearing this in mind, a novel solid substrate room temperature phosphorimetry…
Abstract : The goal of this project is to develop a primer additive that mimics the self-healing ability of skin by forming a polymer scar across scratches. Designed to work with existing military grade primers, Polyfibroblast consists of microscopic, hollow zinc tubes filled with a moisture-cured polyurethane-urea (M…
地方公営企業法に基づく特別会計を設置するには,特別会計設置条例が必要とする説と,これを不要とする説の2つがある。普通地方公共団体の会計は財政民主主義の観点からは単一会計が望ましいとされ,特別会計の設置はこの例外にあたるが,わが国は特別会計法によって特別会計設置の濫設を防止している。ところが,地方自治法制においては,地方公営企業法により当然に特別会計を設置しなければならないことから,特別会計設置条例を必要としないという説が有力である。そこで本稿は,特別会計設置にかんして,地方自治法,地方財政法及ぴ地方公営企業法の沿革を整理した上で.総務省調査から特定した一地方団体の事例分析を行い,会計情報を条例必要説,不要説のいずれが会計情報を適切…
Born and Bradburn1 have deduced the nature of the Raman spectrum of rock-salt to be expected on the basis of the Born lattice dynamics. They claim to have explained satisfactorily the observed features of the rock-salt spectrum reported by Fermi and Rasetti2. I believe that their theoretical results cannot be reconcil…
Received 19 November 2012DOI:https://doi.org/10.1103/PhysRevB.86.219904©2012 American Physical Society
In this article partial and complete substitution of cations in the interlayer region of clay with different amounts of hexadecyl trimethylammonium bromide (HDTMABr) was performed. The aim was to investigate the influence of HDTMA/bentonite ratio on phenol electrooxidation. Multisweep cyclic voltammetry was applied to…
The polymer electrolyte fuel cell (PEFC) is expected as the future automotive power source. However, the PEFC is inferior to the current gasoline engine in the response to the load change such as the acceleration of the vehicle. The main reason of inferiority in such response is the difficulty of quick increase in ste…
I employ a semiphenomenological model introduced by Tsvelik and Chubukov [Phys. Rev. Lett. 98, 237001 (2007)] to describe the state with coexisting superconductivity (SC) and charge density wave (CDW) recently discovered in YBa${}_{2}$Cu${}_{3}$O${}_{6+x}$ (YBCO). The SC and the CDW order parameter fields are united i…
Yapilan bu calismada Aspergillus oryzae α-amilaz enzimi PVA-aljinat kurelere immobilize edilmistir. Serbest ve immobilize α-amilaz aktivitesi uzerine pH’in etkisi incelenmis ve optimum pH’lar sirasiyla 6.0 ve 7.0 olarak bulunmustur. Serbest ve immobilize enzimin optimum sicakligi 60 °C olarak olculmustur. Ilaveten ser…
1. Tetrahedral colloidal clusters from random aggregation of bidisperse spheres. Authors: Nicholas B. Schade, Miranda C. Holmes-Cerfon, Elizabeth R. Chen, Dina Aronzon, Jesse W. Collins, Jonathan A. Fan, Federico Capasso, Vinothan N. Manoharan. arXiv:1201.3952. Recommended with a commentary by M. E. Cates, SUPA, Schoo…
Based on strain gradient theory with surface energy, a non-classical Euler-Bernoulli beam model is developed to study the vibration and stability behavior of micropipes conveying fluid. Applying Hamilton’s principle, the equation of motion and corresponding boundary conditions are derived. The present beam model inclu…
Iron phosphate was prepared from iron nitrate and phosphoric acid with sodium dodecyl sulfate at various stirring hours. The chemical composition of the obtained samples was estimated from ICP and XRD measurements. Particle shape and size distribution were observed by SEM images and laser diffraction/scattering method…
Electron energy loss spectroscopy (EELS) can be used to probe plasmon excitations in nanostructured materials with atomic-scale spatial resolution. For structures smaller than a few nanometers, quantum effects are expected to be important, limiting the validity of widely used semiclassical response models. Here we pre…
Background: The potential hazards of exposure to radiation from radon have been of great concern worldwide, as it is associated with an increased risk of lung cancer. Radon (222Rn) and its progeny are the main sources of radioactivity in the environment. The half-life of 222Rn (3.82 days) is long enough for it to diff…
We present a three-dimensional simulation of electrical conductivity in isotropic, polydisperse rod networks from which we determine the percolation threshold (${\ensuremath{\phi}}_{c}$). Existing analytical models that account for size dispersity are formulated in the slender-rod limit and are less accurate for predi…
In this study, the water vapour sorption of Belmadur wood is fully investigated. The sorption isotherms were analysed using the Hailwood-Horrobin model. Belmadur wood was shown lower total sorption by 26.5%, polymolecular sorption by 23.9% and monomolecular sorption by 33.1% at saturation, compared with the untreated…