Gadopentetate dimeglumine as an alternative contrast material for use in angiography.
Gadopentetate dimeglumine as an alternative contrast material for use in angiography.Y Kinno, K Odagiri, K Andoh, Y Itoh and K TaraoAudio Available | Share
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Hydrogen Bonds as a Crystal Design Element for Organic Molecular Solids with Intermolecular Ferromagnetic Interactions
OH…︁ON and H2CH…︁ON hydrogen bonds determine the arrangement of the stable radical 1 in the solid state. This leads to a system with intermolecular ferromagnetic interactions still rare in solids composed of exclusively organic compounds. The experimental findings are consistent with properties for solid 1 predict…
Evaluation of the kinetic parameters for styrene polymerization and their chain length dependence by kinetic simulation and pulsed laser photolysis
Abstract Pulsed laser photolysis (PLP) has been employed to determine propagation rate constants k p for styrene polymerization in benzene over a wider temperature range (20−80°C) than previously converd. It is proposed that a small chain length dependence of k p (overall) may, in part, be a consequence of a marked ch…
Highly Oriented, Chemically Prepared Pb(Zr, Ti)O 3 Thin Films
We have fabricated highly oriented, chemically prepared thin films of Pb(Zr 0.04 Tio. 0.60 )O 3 (PZT 40/60) on both insulating and conducting substrates. While (100) MgO single crystals were used as the insulating substrates, the conducting substrates. were fabricated by RF magnetron sputter deposition of 100‐nm‐thick…
Calcium conductances and their role in the firing behavior of neonatal rat hypoglossal motoneurons
1. The role of calcium conductances in action potential generation and repetitive firing behavior of hypoglossal motoneurons (HMs) was investigated using intracellular recording and patch-clamp techniques in a brain stem slice preparation of neonatal rats (0-15 days old). 2. The action potential was followed by an aft…
Volume fractions of texture components in polycrystalline materials
The orientation distribution of crystallites has until now been interpreted by a small number of texture components. In the frame of the harmonic formalism, an analytical method for the accurate determination of the volume fractions of peak-type components in restricted regions is developed without recourse to additio…
Crystallization and Its Effect on the Processing of Polypropylene
In this article, the kinetics of crystallization for semi-crystalline polymers has been successfully incorporated into a cavity flow simulation. The flow resistance, in terms of filling pressure, can be significantly underestimated if crystallization is neglected during the calculation. In addition, the filling behavi…
Interaction of multiple spark-generated bubbles in a compressible liquid
This dissertation describes the interaction of bubbles generated by underwater electrical discharges. The oscillations of these high temperature vapor and plasma bubbles generate acoustic signatures similar to the signatures generated by air guns, underwater explosions, and combustible sources. Tasks performed by thes…
Birefringent and Dielectric Properties of [N(C2H5)4]2ZnBr4and [N(C2H5)4]2CdBr4Crystals
Dielectric and birefringent properties of [N(C2H5)4] 2 Z B r 4 and [N(C2H5)4]2CdBr4 crystals were investigated. It has been ascertained that two phase transitions manifest themselves in the temperature dependencies ( T ) f o r [ N ( C 2 H 5 ) 4 ] 2 C d B r 4 c r y s t a l -a s e c o n d -o r d e r t r a n s i t i o n…
Man versus Machine for the World Checkers Championship1
In August 1992, the World Checkers Champion, Dr. Marion Tinsley, defended his title against the computer program Chinook. Through its success in human tournaments, Chinook had earned the right to play for the World Championship. Dr. Tinsley won the b
ULTRASTRUCTURE OF CHRYSODIDYMUS SYNUROIDEUS (SYNUROPHYCEAE)1
ABSTRACT A clonal isolate of Chrysodidymus synuroideus Prowse was derived form a Sphagnum bog in northern Wisconsin and maintained in culture for over 3 years. Cultured colonies consisted almost exclusively of two cells attached at the posterior, each cell bearing two unequal flagella. Correlative light and electron m…
Methods to increase the efficiency of a metallic monolithic catalyst
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMethods to increase the efficiency of a metallic monolithic catalystS. Lennart Andersson and Nils Herman SchoeoenCite this: Ind. Eng. Chem. Res. 1993, 32, 6, 1081–1086Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June…
Thermoluminescence spectra of minerals
Abstract Thermoluminescence (TL) studies of insulators, including crystals of minerals such as calcite, quartz or zircon, have resulted in the development of a wider range of applications in the fields of radiation dosimetry and archaeological and geological dating. Most conventional TL measurements are made by record…
Antioxidants and UV stabilizers: A summary of their utilization in PVC
Abstract With the ever increasing demand for better performing products has come the enhanced use of stabilizers and stabilizer systems in both the production and processing of poly(vinylchloride). Antioxidants and chain terminators are commonly used in teh resin manufacturing to improve the initial color and overall…
Size of Mica Domains and Distribution of the Adsorbed Na-Ca Ions
Abstract Mica domains have received less attention in the literature than smectite quasi-crystals. This study was conducted to determine whether mica crystals form domains in suspension, the conditions in which those domains exist, and the distribution of adsorbed Na and Ca ions in the domains. Particle size distribut…
A new vanadium(V) persulfide complex: (NEt4)[VO(S2)2(bpy)]
ADVERTISEMENT RETURN TO ISSUEPREVArticleA new vanadium(V) persulfide complex: (NEt4)[VO(S2)2(bpy)]Stephanie L. Castro, James D. Martin, and George ChristouCite this: Inorg. Chem. 1993, 32, 13, 2978–2980Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June 1993https…
STM investigations on primary particle morphology of polyaniline
Abstract SEM investigation of polyaniline (PAni) layers showed that it is composed of around 10 nm small primary particles. This is in accordance with other earlier results.
Hematite Identification in Pseudo-Particles of Moroccan Rubified Soils
Abstract In Moroccan calcareous mountains, red soils are distinguishable from brown soils, not only by their colour but also by their microaggregated structure. Clay mineral dispersion studies of these soils were carried out by increasing pH, after different treatments. The formation of the pseudo-particles appears to…
Corrosion inhibition of carbon and low alloy steels in sulphuric acid solutions by 2‐mercaptopyrimidine derivatives
Abstract Several derivatives of 2‐mercaptopyrimidine (containing ‐OH, ‐SH, ‐NH 2 or ‐CH 3 substituents) have been studied as corrosion inhibitors of ARMCO iron and low alloy steels in 1 M sulphuric acid solutions. Tests have been conducted during 6 h in the temperature interval between 60 and 90°C. The trends of the c…
Surface tension of liquid polysiloxanes having fluorinated alkyl side‐chains
Abstract The surface tension of viscous polymer liquids, viz. polysiloxanes having fluorinated alkyl sidechains, was evaluated based on the pendant‐drop method. The polysiloxane fluids studied are poly‐(3,3,3‐trifluoropropylmethylsiloxane), poly(3,3,4,4,5,5,6,6,6‐nonafluorohexylmethylsiloxane) (PNFHMS), poly(3,3,4,4,5…