Materials Literature
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ADVERTISEMENT RETURN TO ISSUEArticleNEXTSynthesis and Photoluminescence of Weblike Agglomeration of Silica NanoparticlesM. S. El-Shall, S. Li, T. Turkki, D. Graiver, U. C. Pernisz, and M. I. BaratonCite this: J. Phys. Chem. 1995, 99, 51, 17805–17809Publication Date (Print):December 1, 1995Publication History Published…
The space charge behavior such as charge distribution and electrical conduction of maleic anhydride grafted LDPE (LDPE-g- MAH) was investigated. Heterocharge was found in LDPE and it decreased with increasing MAH graft ratio in LDPEg- MAH. Conduction currents also decreased with increasing MAH graft ratio. The relatio…
The consistencies among the reported univariant hydrogen pressures in the three two‐phase regions of the Zr‐H system, aZr/δZrH 2‐x αZr/βZr, and βRZr/δZrH 2–x , are evaluated with the thermodynamic constraint derived by Speiser. 16 Hydrogen dissolution in αZr is evaluated by checking the consistencies among the Sievert…
This paper deals with the possibilities of noise suppression in partial discharge (PD) measurements under on-site conditions. After the presentation of previous work, a new concept of designing a digital FIR filter with a fixed order to suppress narrow-band disturbances will be presented. The method will be compared t…
Ternary alloys of NiTiHf, having higher transformation temperatures than binary NiTi shape memory alloys, have been produced and analyzed. Beginning with a base composition of Ni49Ti51’, Hf was substituted for Ti up to 30 atomic percent. Differential scanning calorimetry was used to determine the transformation temper…
Abstract The anionic ring‐opening polymerization of L‐lactide was initiated by dipotassium‐poly‐isobutylene‐alcoholate telechelic polymer to yield poly( L ‐lactide)‐ block ‐polyisobutylene‐ block ‐poly( L ‐lactide) triblock copolymer, a partially biodegradable thermoplastic elastomer. The pure triblock copolymer was o…
The intrinsic 1.9-eV photoluminescence band (the R band) in neutron-irradiated synthetic silica glass has been studied using site-selective photoluminescence excitation in the 2.0 eV absorption band and transient spectral hole-burning techniques. The measurements of the low-energy wing of the zero-phonon line intensit…
The effects of atomic-scale voids on the strength and mechanical behavior of aluminum at zero temperature are investigated using the total-energy pseudopotential method. A series of calculations are performed in which the defective system is extended by a small increment and then is relaxed to its ground state configu…
Structure factors for synthetic yttrium orthoferrite, YFeO 3 , measured with MoKα (λ = 0.71073 A) X-radiation and using a smaller crystal with focused λ = 0.75 A synchrotron radiation are broadly consistent. Approximate symmetry in concordant difference densities indicates that cations deform the electron density more…
This study was conducted to determine water sorption isotherms of cellulose‐based films made from methyl cellulose (MC) and hydroxypropyl cellulose (HPC), and to evaluate the effect of plasticizer concentration and temperature on water vapor permeability coefficient in those films. the equilibrium moisture contents of…
A new technique for producing hollow shell laser fusion fuel capsules has been developed that starts with a depolymerizable mandrel. In this technique we use poly(α-methylstyrene) (PAMS) beads or shells as mandrels which are overcoated with plasma polymer. The PAMS mandrel is thermally depolymerized to gas phase monom…
Amorphous carbon films grown by low-energy mass-selected ion-beam deposition have been characterized by inelastic and elastic electron scattering. Films were grown using deposition energies from 10 up to 2000 eV. Most samples were deposited at room temperature with a few deposited at elevated substrate temperatures. T…
An increasingly urgent topic for the realization of densely packed (mixed signal) integrated circuits is prevention of cross-talk via the substrate. This paper proposes a Boundary Element Method (BEM) for calculating an admittance matrix for the substrate in order to analyze the parasitic coupling during layout verifi…
Dendritic chromatophores that contained blue pigmentary organelles were found in the bluish parts of the skin of two callionymid species, the mandarin fish, Synchiropus splendidus, and the psychedelic fish, S. picturatus. We named these novel cells “cyanophores” and the organelles “cyanosomes”. In response to various…
We present results from a Monte Carlo study of polymer adsorption from solution at a solid-liquid interface, in the limit of infinitely large adsorption energy. We study the kinetics of adsorbed layer formation for both the cases of end-functionalized chains and homopolymers. In the former case, the adsorbed layer is…
The temperature dependence of 〈111〉 tilt grain boundaries with angles of misorientation of 38·2° and 40·5° was investigated in bicrystals of both pure (99·999%) Al and the same Al doped with 10ppmGa in the temperature regime between 400 and 580°C. The grain boundary mobility for the investigated grain boundaries over…
Shape memory alloys (SMA) are a class of materials proposed to be used as actuator elements in smart structures. They undergo a reversible martensitic phase transformation during thermal cycling. In this work, 55-nitinol (55% nickel-45% titanium shape memory alloy) was investigated to determine the effect of training…
Toxic and/or carcinogenic consequences may result from metal ion substitution for the Zn-(II) in transcription factors containing zinc fingers, and the small Cys-rich metal-binding protein metallothionein (MT) may play a role in this metal substitution. To begin to evaluate this hypothesis, with regard to the carcinog…
SUMMARY The L 3 to L 2 white‐line intensity ratios of Mn in solid solution in yttria‐stabilized zirconia and in Mn oxide standards are measured using different approaches. We show that the L 3 /L 2 ratio alone cannot be used as a means of deducing the oxidation state and that a combined analysis of this ratio and the…
The UvrABC endonuclease from Escherichia coli repairs damage in the DNA by dual incision of the damaged strand on both sides of the lesion. The incisions are in an ordered fashion, first on the 3'-side and next on the 5'-side of the damage, and they are the result of binding of UvrC to the UvrB-DNA preincision complex…