Materials Literature
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The dimeglumine salt of the Gd-DTPA complex has a strong paramagnetic effect and a very low toxicity in animals. This report of its use in human volunteers confirms its low toxicity and indicates its usefulness in the enhancement of signal intensity of the kidney and bladder.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-diffusion of water at the protein surface: a measurementC. F. Polnaszek and R. G. BryantCite this: J. Am. Chem. Soc. 1984, 106, 2, 428–429Publication Date (Print):January 1, 1984Publication History Published online1 May 2002Published inissue 1 January 1984https://pubs.a…
F. O. Flint and K. Pickering, Analyst, 1984, 109, 1505 DOI: 10.1039/AN9840901505
A crystallographic characterization study has been made of the transgranular stress corrosion cracking in pure Mg tested at room temperature in aqueous NaCl-K2CrO4. Selected area electron channeling and photogrammetry were used to determine the cracking orientation. The fracture surfaces consisted of flat parallel {22…
The P5Co9W27O119H1716– anion has 3/m symmetry, and contains nine CoO6 octahedra sharing oxygen atoms with one another and with three α-B PW9O34 moietries and two PO4 groups.
[Au10Cl3(PCy2Ph)6](CO3) which has been synthesised in low yield from Au(NO3)(PCy2Ph) and NaBH4 has a toroidal geometry based on a hexagonal ring of edge- and face-sharing tetrahedra which share a common central vertex.
Liposomes, microscopic particles composed of lipid bilayer membranes, can carry water-soluble drugs in their aqueous compartments and lipid soluble drugs in their bilayers. Over the last 10 years, they have been studied more intensively than any other type of drug carrier. The first impulse, as with other pharmaceutic…
Pulse radiolysis and flash photolysis-initiated one-electron oxidation of 3,4-dihydroxyphenylalanine (dopa) and other catecholamines have allowed the direct measurement of the kinetics of semiquinone disproportionation leading successively to the corresponding melanin precursors dopaquinones and dopachromes.
The result of subjective finger-pressure assessments of fabric softness are compared with objective measurements of compression. Good correlation between them is reported for a set of non-woven and a set of woven fabrics. Relations between the touch, compressibility, mass, thickness, density, and specific volume of th…
Solid-state polymorphic transformations can have a profound influence on the processing and storage of some crystalline powders. Using classical models of nucleation and growth a framework is developed which highlights the importance of crystal size on the transformation rate. A key parameter in this theory is the rat…
L-Sorbose degradation in Klebsiella pneumoniae was shown to follow the pathway L-sorbose leads to L-sorbose-1-phosphate leads to D-glucitol-6-phosphate leads to D-fructose-6-phosphate. Transport and phosphorylation of L-sorbose was catalyzed by membrane-bound enzyme IIsor of the phosphoenolpyruvate-dependent carbohydr…
Carbon-11-labeled dimethyloxazolidinedione ([11C]DMO) was injected intravenously into human subjects, and serial positron emission tomographic (PET) scans were obtained until brain-blood equilibration was achieved or could be accurately predicted from dynamic PET and 11C blood data. Knowledge of regional brain-blood p…
The emission and excitation spectra of the SrS: Pb 2+ and SrSe: Pb 2+ phosphors were measured at low temperatures. The 3 A 1u → 1 A 1g emission band at 374 or 392 nm is observed at 80 K in addition to the 3 T 1u → 1 A 1g emission band at 368 or 383 nm for SrS: Pb 2+ or SrSe: Pb 2+ , respectively. On these emission ban…
The site of nitration by nitrogen dioxide on a range of metalloporphyrins has been found to be dependent on the co-ordinated metal; copper(II), nickel(II), and palladium(II) complexes are nitrated specifically on the porphyrin β-pyrrolic position while magnesium(II), zinc(II), chloroiron(III), and cobalt(II) complexes…
Abstract Moisture regimes and associated soil mottling patterns were investigated over a 2‐y period in a Paxton‐Rainbow‐Ridgebury‐Scarboro hydrosequence in central Massachusetts. Changes in physical conditions in these coarse‐loamy fragipan soils were monitored with well points, tensiometers, soil temperature probes,…
Copper surfaces producing enhancement of the Raman scattering cross-section for adsorbed molecules comparable to the largest enhancements observed on silver have been prepared. These substrates are suitable for investigations of reactant intermediates in heterogeneous catalytic reactions, since they exhibit strong enh…
The structure of woBastonite-2M from Death ValJey, CaJifornia, USA, Ca3(Si30g), is monoclinic with space group P21!a, a = 15.409(3), b=7.322(1), c=7.063(1)A, {3=95.30(2)', Z=4 and Dx=2.92g cm-3, and was refined to R (unweighted) =0.038 and R(weighted)=0.031 using 3886 non- equivalent reflections. WoBastonite-2M contai…
Abstract The molecular structure of γ‐methacryloxypropyltrimethoxysilane (γ‐MPS) deposited on the surfaces of particulate mineral fillers was modeled by adjusting the pH of an aqueous alcoholic solution of the silane in absence of a substrate. Hydrolyzates obtained from the solution were studied by gel permeation chro…
This book reviews the causes of corrosion-related events responsible for a significant loss of power plant availability. Problems that occur in the steam generating, geothermal, and nuclear components of power generating systems are discussed. Topics considered include the fundamental aspects of localized environmenta…
These proceedings collect papers presented at a symposium on alloy phase diagrams. Topics include: Crystal phase transformations; order-disorder transformations; crystal lattices; metallic glasses; metastable states; solubility; binary alloy systems; and alloys of iron, tantalum, silicon, aluminum, germanium, palladiu…