Isoelectric pH of polyamide–epichlorohydrin modified soy protein improved water resistance and adhesion properties

Protein macromolecules derived from plants have been considered as alternative resources for various applications, including adhesives, films, rubbers, and biocomposites. Plant protein polymers are pH sensitive and need to be modified to meet application performance. This study demonstrated interactions between polyamide–epichlorohydrin (PAE) and soy protein as affected by pH and temperature. PAE and soy protein molecules formed reversible ionic complexes at room temperature at a pH range of 4–9. The complexation interactions acted as physical crosslinking, which stabilized the soy protein structure and increased its denaturation temperature and enthalpy. The viscosity of adhesives derived from the interaction of PAE and soy protein was affected significantly by the complexation formation, denaturation, and pH. The complexation interactions improved the adhesion properties of the PAE/modified soy protein. pH also played an important role in the adhesion performance, which was attributed to the pH dependence of the protein conformation and PAE/soy protein complexation interactions. © 2006 Wiley Periodicals, Inc. J Appl PolymSci 103: 2261–2270, 2007     

The Interaction Between SrFeCo0.5O x Ceramic Membranes and Pt/CeZrO2 During Syngas Production from Methane

Non-porous ceramic membranes with mixed ionic and electronic conductivity have received significant interest as membrane reactor systems for the conversion of methane to higher value products. In this work, the role of the membrane in the conversion of methane and the interaction with a Pt/CeZrO₂ catalyst has been studied. Pulse studies of reactants and products over physical mixtures of crushed membrane material and catalyst have clearly demonstrated that a synergy exists between the membrane and the catalyst under reaction conditions. The degree of catalyst/membrane interaction strongly impacts the conversion of methane and the catalyst performance.     

Cognitive processing of trauma cues in adults reporting repressed, recovered, or continuous memories of childhood sexual abuse.

Psychologically traumatized people exhibit delayed color naming of trauma words in the emotional Stroop task. Four groups of participants were asked to color name positive words, neutral words, and trauma words; these groups included 15 women who believed that they harbored repressed memories of childhood sexual abuse (CSA), 13 women who reported recovered memories of CSA, 15 women who had never forgotten their CSA, and 12 women who had never been abused. Repressed-memory participants exhibited patterns of interference indistinguishable from those of the nonabused control group participants. Irrespective of group membership, the severity of self-reported posttraumatic stress disorder symptoms was the only significant predictor of trauma-related interference, r(48)?=?.30?, p?     

Confidence in protection: A developmental psychopathology perspective.

S. Goldberg, J. Grusec, and J. M. Jenkins (see record 1999-15264-001) provided a thorough review of J. Bowlby's (1982) work and offered a persuasive argument to consider confidence in protection as the roots of the parent-child attachment system. In an attempt to explore implications of their work, confidence in protection is examined from a developmental psychopathology perspective, with issues highlighted specifically about the role of family functioning, as well as the notion of risk and protection mechanisms. Questions are raised in the spirit of responding to and extending S. Goldberg et al.'s (1999) thought-provoking analysis. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Making law therapeutic for lawyers: Therapeutic jurisprudence, preventive law, and the psychology of lawyers.

The integration of therapeutic jurisprudence (TJ) with preventive law (PL) offers a uniquely satisfying and humanistic way of practicing law. The author uses the psychological data on the personality characteristics of lawyers to argue that TJ/PL is particularly well suited for lawyers with certain personality traits atypical of lawyers generally. These traits reflect altruistic, humanistic, or interpersonally oriented values; 2 of these atypical traits have been empirically linked to career dissatisfaction among lawyers. Because of the pervasiveness of the problem of lawyer job dissatisfaction, solutions are needed. TJ/PL is more than simply an alternative way of practicing law; it may actually hold the key to solving some of the problems currently besieging the legal profession. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

"I love you more today than yesterday": Romantic partners' perceptions of changes in love and related affect over time.

Partners in romantic relationships provided reports on perceived changes in their love, commitment, and satisfaction and completed contemporaneous scales on the same relationship phenomena multiple times over several years. At each wave of the longitudinal study, participants whose relationships had remained intact perceived that their love and related phenomena had increased since they had last participated in the study. However, their scores on contemporaneous scales did not generally increase over time. Analyses indicated that participants' reports of change were related to actual change in love, commitment, and satisfaction scores and with future relationship stability. Furthermore, participants who experienced a breakup during the longitudinal study reported an overall decrease in their positive affect in the months prior to the breakup. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Children's interpretation of generic noun phrases.

Generic utterances (e.g., "Cows say 'moo"') have 2 distinctive semantic properties: (a) Generics are generally true, unlike indefinites (e.g., "Bears live in caves" is generic; "I saw some bears in the cave" is indefinite), and (b) generics need not be true of all category members, unlike universal quantifiers (e.g., all, every, each). This article examined whether preschool children and adults appreciate both these features, using a comprehension task (Study 1) and an elicited production task (Study 2). In both tasks, 4-year-old children--like adults--treated generics as distinct from both indefinites ("some") and universal quantifiers ("all"). In contrast, 3-year-olds did not differentiate among generics, "all," and "some." By 4 years of age, generics emerge as a distinct semantic device. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Specific exemplar retention and prototype abstraction in young and old adults.

Examined the effects of age differences in retention of information about specific concept members on 40 older adults' (mean age 72.3 yrs) and 40 younger adults' (mean age 20.6 yrs) ability to abstract central tendency information. The mean Wechsler Adult Intelligence Scale—Revised (WAIS—R) Vocabulary scaled score for the young adults was significantly lower than that of the older adults. Ss were presented with a series of visual patterns that were organized around a prototype and were then presented with these same patterns plus a set of new patterns varying in prototype similarity in a recognition test. It was found that young Ss retained more information about specific acquisition set exemplars, which resulted in slightly different recognition responses for new patterns. However, the recognition behavior of both young and older Ss appeared to be governed by the same rules. It is suggested that the organization of conceptual information does not change with age but that the poorer retention of specific item information in older adults may result in a less complete representation. (14 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differential effects of experiential and problem-solving interventions in resolving marital conflict.

Compared the relative effectiveness of 2 interventions in the treatment of marital discord: a cognitive-behavioral intervention that focused on teaching problem-solving skills and an experiential intervention that focused on emotional experiences underlying interaction patterns. 45 couples seeking therapy were randomly assigned to 1 of these treatments or to a wait-list control group. Each treatment was administered in 8 sessions by 6 experienced therapists whose interventions were monitored and rated to ensure treatment fidelity. Assessment measures included the Dyadic Adjustment Scale; Couples Therapy Alliance Scale; and tests of emotional style, target complaints, goal attainment, and intimacy. Results indicate that the perceived strength of the working alliance between couples and therapists and of general therapists effectiveness were equivalent across treatment groups and that both treatment groups made significant gains over untreated controls on measures of goal attainment, marital adjustment, intimacy levels, and target complaint reduction. The effects of the emotionally focused treatment were superior to those of the problem-solving treatment on marital adjustment, intimacy, and target complaint level. At follow-up, marital adjustment scores in the emotionally focused group were still significantly higher than those in the problem-solving group. (36 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)