Pitting Corrosion of Carbon Steel in Chloride-Containing Saturated Ca(OH)2 Solutions

Protection of Metals and Physical Chemistry of Surfaces - Pitting formation in carbon steel in saturated Ca(OH)2 solutions containing different concentrations of added NaCl is studied...     

Solid-Phase Extraction of Eu(III) and Am(III) with Synergistic Mixtures of Extractants

Solid-phase extraction (SPE) of Eu(III) and Am(III) in systems containing a chelating agent and a neutral electron-donor compound was studied. In the systems 1-phenyl-3-methyl-4-benzoylpyrazol-5-one-tetraphenylmethylenediphosphine dioxide and 1-phenyl-3-methyl-4-benzoylpyrazol-5-one-trioctylphosphine oxide, the distribution factors of Eu(III) and Am(III) showed a synergistic effect owing to adduct formation.     

Effect of the Chemical Composition and Structure of High-Chromium-Nitrogen Steels on Their Corrosion Resistance

Corrosion properties of high-chromium-nitrogen steels with different structures determined by the heat treatment processes are investigated. It is shown that the ferritic structure provided by hardening from 1200°C and tempering at 700°C is preferable for steels bearing 21 – 24% Cr and over 1% N.     

Predicting termination type from client-therapist agreement on the severity of the presenting problem.

Discrepancies between clients and therapists in their perceptions of the severity of the client's presenting problem were tested for their utility in predicting both premature and mutual termination. Eight problem types were examined, and analyses were conducted within a survival analysis framework. Across the majority of problem types, results indicated that greater discrepancies between clients and therapists lowered the odds of mutual termination; however, greater discrepancies did not in turn increase the odds of premature termination. Interaction tests of client-therapist discrepancy with a variable that changes over time, accruing number of sessions, offer some qualifications. In particular, in the case of two problem types--depression and family-of-origin--when large discrepancies occurred, the likelihood of premature termination maintained at an equal rate throughout treatment, whereas when discrepancies were moderate or absent, the likelihood of premature termination diminished. Implications for clinicians and researchers point to enhancement of the therapeutic alliance as a means of reducing the probability of premature termination and increasing the probability of mutual termination. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Recovery of Np(V), Pu(IV), and Am(III) by solid-phase extraction with supported <Emphasis Type="Italic">N</Emphasis>-benzoylphenylhydroxylamine

Recovery of Np(V), Pu(IV), and Am(III) by solid-phase extraction with supported N-benzoylphenylhydroxylamine (BPHA) from simulated groundwater with pH 8.5 was studied. DIAPAK C16 cartridges modified with BPHA can be used for preconcentration of these elements from natural waters by solid-phase extraction.     

Construction and Evaluation of a Number Sense Test With Head Start Children.

The reliability and, to a lesser extent, the validity of the newly created Number Sense Test was evaluated with a group of 40 3- to 5-year-old children attending Head Start. Six number sense skills (e.g., counting, number identification, addition-subtraction) and children's feelings about school were assessed both before and after instruction either in 2 of these skills (i.e., counting and number identification) or in insects (i.e., an attention control condition). The Number Sense Test was found to have high internal consistency and to be a valid means of assessing pre- to posttest improvements in instructed skills as a function of condition. Except for addition-subtraction, training effects did not generalize to non-instructed number sense skills. In neither condition did instruction have a harmful effect on children's largely positive feelings about school. (PsycINFO Database Record (c) 2010 APA, all rights reserved)