Materials Literature
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Preferential nucleation of dynamic grains at triple junction (TJ) was investigated in copper tricrystal during high-temperature deformation. The nucleation of the dynamic grains at the TJ was observed at much lower strain than the peak strain where dynamic recrystallization (DRX) extensively took place. Further strain…
The growth of cuprous benzotriazole films (CuBTA), formed on Cu monocrystals and vapor deposited films under controlled potential conditions in 1 M 1-H benzotriazole, has been studied by measurement of electrical charge. Film growth follows a direct logarithmic relationship to ∼25 nm thickness and effects of crystallo…
The model of organic film growth on a cathode during electrodeposition process proposes the current density-time and film thickness-time relationships and enables the evaluation of the rate contents for the electrochemical reaction of OH? ion evolution and for the chemical reaction of organic film deposition. The depe…
The material properties and the microstructure of the scaffold are important parameters that determine the suitability of a material for tissue growth and controlled drug release. Because of its non-toxic, biocompatible, biodegradable, and antithrombogenic nature, chitosan has generated enormous interest for such appl…
Structural phase transitions of Ba 2 In 2 O 5 at high temperatures were investigated by thermal gravimetric-differential thermal analysis (TG-DTA), dilatometry, and differential scanning calorimetry (DSC). It was revealed that there exist three phases in Ba 2 In 2 O 5 . At ∼910°C, a first-order structural phase transi…
The crystal structure refinements of six M/Mg/Al mixed oxides containing cations in the ratio M∶Mg∶Al = 5∶71∶24 (where M is Ru, Rh or Ir) have been carried out using both neutron and X-ray powder full pattern diffraction analysis. The samples were obtained by thermal decomposition of hydrotalcite-type anionic clays at…
Attractive colloidal particles can exhibit a fluid to solid phase transition if the magnitude of the attractive interaction is sufficiently large, if the volume fraction is sufficiently high, and if the applied stress is sufficiently small. The nature of this fluid to solid transition is similar for many different col…
Stator winding failures are generally attributed to groundwall or turn insulation failures. The failure mechanism involves the gradual development of a weakness in the insulation. This weakness is usually caused by a trapped void that is continuously enlarging due to ever-increasing corona or partial discharge activit…
We establish that a mode-coupling approximation for the dynamics of multi-component systems obeying Smoluchowski dynamics preserves a subtle yet fundamental property: the partial density correlation functions are, considered as matrices, completely monotone, i.e., they can exactly be written as superpositions of decay…
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Electrochemical Oxidation of CO on Pt and Ni Point Electrodes in Contact with an Yttria-Stabilized Zirconia Electrolyte: II. Steady-State and Impedance Measurements , O̸stensen Lauvstad, Gro, Tunold, Reidar, Sunde, Svein
The enantiomerically pure cis-1,2-diol 2, which is obtained by microbial oxidation of toluene, has been converted, via a sequence of reactions including high-pressure promoted Diels–Alder cycloaddition and oxa-di-π-methane rearrangement steps, into the triquinane (−)-hirsutene (1).
The objective of the present study was to investigate the adsorption of PRP-1, PRP-3 and statherin to solid surfaces in terms of dependence on concentration, the presence of electrolyte and surface wettability. Time resolved in situ ellipsometry was used to determine the adsorbed amounts and adsorption rates of pure P…
Therapeutic intervention in inflammatory bowel diseases (IBDs) is often associated with severe toxicity related to the nonspecific and ubiquitous interaction of drugs with the organs and tissues. In order to prevent side effects from aggressive and prolonged treatment with glucocorticoids and immunosuppressive agents,…
Local dissolution behavior of duplex stainless steel UNS S32304, UNS S31803, and UNS S32750 in was studied in situ by electrochemical scanning tunneling microscopy (STM). Submicrometer features could be resolved and events occurring at phase/grain boundary regions could be monitored in the solution. By STM imaging, se…
Research Article| January 01, 2002 Grazing-incidence X-ray Absorption and Emission Spectroscopy Glenn A. Waychunas Glenn A. Waychunas Geochemistry Department, Earth Sciences Division, MS 70-108B, E. O. Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California, 94720, U.S.A. Search for other works…
Tensile properties were investigated from room temperature to 673 K of a binary Mg–0.9 mass%Ca alloy where Mg2Ca phase was dispersed as lamella. The 0.2% proof stress significantly increased by the Mg2Ca phase in the temperature range investigated. It was suggested that strengthening by stable lamella Mg2Ca in the gra…
We created a model system made up of PU networks containing reactive surfactant additives in small amounts (<1%), brought in during the synthesis and able to reorient when changing the surrounding medium. The surfactants were made of fluorinated chains, sulfonamide kneecaps, and alkyl chains with a hydroxyl function a…
A series of meso-η1-platiniometalloporphyrins comprising DPP (= dianion of 5,15-diphenylporphyrin) and the first row transition metal ions Mn(III), Co(II), Ni(II) and Zn(II) has been prepared. The syntheses, spectroscopy and voltammetry as well as crystal structures of several of these derivatives are reported. The –P…
The extended use of Zircaloy cladding in light water reactors degrades its mechanical properties by a combination of irradiation embrittlement, coolant-side oxidation, hydrogen pickup, and hydride formation. The hydrides are usually concentrated in the form of a dense layer or rim near the cooler outer surface of the…