J W Santrock

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Measurements of carbon and oxygen isotopic abundances are commonly based on the mass spectrum of carbon dioxide, but analysis of that spectrum is not trivial because three isotope ratios (17O/16O, 18O/16O, and 13C/12C) must be determined from only two readily observable ion-current ratios (45/44 and 46/44). Here, approaches to the problem are reassessed in(More)
OBJECTIVE This paper describes a study aimed at characterizing the exposure to physical and chemical by-products from the deployment of airbag restraint systems. DESIGN, MATERIALS AND METHODS Specifically, the levels of particulates and the composition of gases and bag fabric speed were measured in the passenger compartment following deployment of either(More)
Oxidation of rat hepatic tissue was measured as incorporation of oxygen-18 (18O) from 18O2 following exposure to carbon tetrachloride (CCl4). Anesthetized rats were injected with CCl4 and allowed to breathe 18O2 for 1 hr, and then livers were homogenized, fractionated, and dried. The dried fractions were pyrolyzed to CO by an oxygen elemental analyzer, the(More)
The rated and observed moral behavior, judgment, and affect of 120 preadolescent, predominantly lower-class boys from early-divorced (before the boys were 6), late-divorced (between 6 and 10), and parentally intact homes were investigated. In addition, the mothers' discipline (power assertive, inductive, and love withdrawal) and affection were examined by(More)
The influence of negative, equal, and positive social comparison and of nonsocial comparison upon 4- and 5-year-old black children's subsequent aggressive and regressive behavior in 3-member groups was investigated. The group behavior of boys included more physical agression following negative social comparison than the other treatments, and their group(More)
In this study, 18O3 was used as a tracer for inhaled ozone in mice. The amount of ozone-derived oxygen (ODO) in the lungs was determined by measuring the amount of oxygen-18 in excess of the natural abundance level which remained covalently bound to organic constituents of lung following exposure to 1 ppm 18O3 for less than or equal to 60 min. The rate of(More)
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