Detection of Pitting with Electrochemical Impedance Spectroscopy
Abstract not Available.
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Partial discharge measurement and interpretation
An overview is given of partial discharge patterns, their evaluation, and determination of their origin. Some brief comparisons of test equipment considered to be of general interest are made. The intent is to assist practitioners in the interpretation of results as well as in the accurate discrimination between true…
Compilation of temperature factors of cubic elements
A compilation is presented of the temperature factors of 22 cubic elements. This represents the first stage of a Temperature Factor project initiated by the Neutron Diffraction Commission of the International Union of Crystallography [Acta Cryst. (1985), B41, 374].
Effect of tacticity on permeation properties of poly(methyl methacrylate)
Abstract The effect of stereoregularity on gas permeation properties of poly(methyl methacrylate) (PMMA) was investigated. The gas permeability coefficients for He, H 2 , O 2 , N 2 , Ar, CH 4 , and CO 2 at 35°C near atmospheric pressure have been measured for three different PMMAs. Apparent diffusion and solubility co…
Novel chemical pathways and charge-transport dynamics of electrodes modified with electropolymerized layers of [Co(v-terpy)2]2+
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel chemical pathways and charge-transport dynamics of electrodes modified with electropolymerized layers of [Co(v-terpy)2]2+A. R. Guadalupe, D. A. Usifer, K. T. Potts, H. C. Hurrell, A. E. Mogstad, and H. D. AbrunaCite this: J. Am. Chem. Soc. 1988, 110, 11, 3462–3466Publi…
Monte Carlo simulation of hard spheres near random closest packing using spherical boundary conditions
Monte Carlo simulations were performed for hard disks on the surface of an ordinary sphere and hard spheres on the surface of a four-dimensional hypersphere. Starting from the low density fluid the density was increased to obtain metastable amorphous states at densities higher than previously achieved. Above the freez…
Frequency dielectric dispersion in the ferroelectric and superionic phases of CsH2PO4
The complex admittance was measured for CsH2PO4 in the frequency range from 30 Hz to 60 MHz and in the temperature range 90-550 K. The domain wall relaxation time was found to decrease anomalously when approaching to Tc. From the investigations of the conductivity of CDP the structural phase transition at Tsi.=503K wa…
Nonisothermal Vulcanization of Rubber Compounds
Abstract In the present paper, progress has been made in developing a model for nonisothermal vulcanization of rubber compounds. The model is presently based on differential scanning calorimetry (DSC) measurements of heat evolved during vulcanization. The model parameters are determined from several isothermal DSC sca…
A Simple Way to Reduce Hysteresis and Creep When Using Piezoelectric Actuators
We present a simple way to compensate for hysteresis and creep in piezoelectric actuators. By inserting a capacitor in series with the piezoelectric actuator, we find a reduction in the size of the hysteresis loop. For a suitable small capacity in series, creep is eliminated.
Electrochemical Impedance Technique — A Practical Tool for Corrosion Prediction
Electrochemical impedance (AC impedance) measurements are practical for predicting corrosion behavior. Combining this technique with small amplitude DC polarization offers a rapid method of estimating corrosion rates. Optimization of the potentiostat gain allows for the rapid estimation of very low corrosion rates. Fu…
Asymmetric dimeric liquid crystals The preparation and properties of the α-(4-cyanobiphenyl-4'-oxy)-ω-(4-n-alkylanilinebenzylidene-4'-oxy)hexanes
The first eleven members of the homologous series of α-(4-cyanobiphenyl-4'-oxy)-ω-(4-n-alkylanilinebenzylidene-4'-oxy)hexanes have been synthesized. The compounds are all enantiotropic nematogens and, with the exception of the heptyl, octyl and nonyl homologues, exhibit smectic phases. The thermal stability of the sme…
Ferroelectric Liquid Crystals
The idea either to reveal or to construct a liquid ferroelectric was never abandoned by researchers since the discovery of ferroelectricity in solid crystals at the beginning of this century. In principle, nature does not forbid the existence of ferroelectric liquids. For instance, a centro-symmetric liquid can change…
An isochemical model for formation of authigenic kaolinite, K-feldspar and illite in sediments
Abstract Although thermodynamic calculations indicate a narrow range of conditions for coprecipitation of kaolinite and K-feldspar, coexistence of authigenic kaolinite and K-feldspar is common in Jurassic sandstones of the North Sea. This paper shows that the coexistence of authigenic K-feldspar and kaolinite may indi…
BIOLOGICAL ACTIVITIES OF PHTHALOCYANINES‐X. SYNTHESES AND ANALYSES OF SULFONATED PHTHALOCYANINES
Abstract— Synthetic methods to obtain selectively sulfonated metallo phthalocyanines are compared. Both condensation and direct sulfonation procedures lead to mixtures of mono‐ to tetrasulfonated products which are resolved by reverse phase liquid chromatography in buffered aqueous‐methanol. The proportion of sulfonat…
Moderately strong intramolecular magnetic exchange interaction between the copper(II) ions separated by 11.25 .ANG. in [L2Cu2(OH2)2(.eta.-terephthalato)](ClO4)2 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTModerately strong intramolecular magnetic exchange interaction between the copper(II) ions separated by 11.25 .ANG. in [L2Cu2(OH2)2(.eta.-terephthalato)](ClO4)2 (L = 1,4,7-trimethyl-1,4,7-triazacyclononane)Phalguni. Chaudhuri, Karen. Oder, Karl. Wieghardt, Stefan. Gehring, W…
Viscoelastic properties of polybutadiene rings
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTViscoelastic properties of polybutadiene ringsJacques RooversCite this: Macromolecules 1988, 21, 5, 1517–1521Publication Date (Print):May 1, 1988Publication History Published online1 May 2002Published inissue 1 May 1988https://pubs.acs.org/doi/10.1021/ma00183a049https://doi.…
The Distribution of Doxorubicin in Mice Following Administration in Niosomes
Large multilamellar non-ionic surfactant vesicles (niosomes) with diameters of around 800-900 nm prepared from a C16 triglyceryl ether with and without cholesterol and containing doxorubicin (Adriamycin) were administered to S180 tumour-bearing NMRI mice by bolus injection. Although in-vitro drug release from choleste…
Structure and magnetic properties of ferrimagnetic chains formed by manganese(II) and nitronyl nitroxides
Four ferrimagnetic chains formed by manganese hexafluoroacetylacetonate and different nitronyl nitroxide radicals 2-R- 4,4,5,5-tetramethy1-4,5-dihydro1-H -imidazolyl-1 - oxy 3-oxide (with R = isopropyl, ethyl, methyl, and phenyl) were synthesized. The magnetic susceptibility measurements in the range 6300 K show a div…
Design for an Automated Tension Infiltrometer
Abstract An automated tension infiltrometer useful for a range of water tensions from 0.02 to 0.50 m and for infiltration rates of 1 × 10 −8 to 5 × 10 −4 m s 1 is described. Infiltration rates are calculated from the change in water height in a Mariotte column. Water height is automatically measured by using the diffe…
Light scattering from nematic droplets: Anomalous-diffraction approach
The scattering matrix, differential cross section, and total cross section for supramicrometer-size nematic droplets in a polymeric matrix are derived in the anomalous-diffraction approach. Scattering patterns are calculated in detail for three different nematic-director configurations: one characteristic of a droplet…