Boys withdraw more in one-on-one interactions, whereas girls withdraw more in groups.

Past research predicts that males will be more likely to withdraw in one-on-one interactions versus groups, whereas females will be more likely to withdraw in groups than in one-on-one interactions. Ninety-eight 10-year-old children engaged in a word generation task either in same-sex dyads or in groups. Boys completed significantly more words in groups than in dyads, whereas girls' performance was similar in the 2 social structures. Confirming the hypothesis, analyses of the dynamics of dyads and groups using time spent writing as a measure of effort demonstrated that boys withdrew more than girls in dyads, whereas girls withdrew more than boys in groups. Furthermore, in groups, girls were more likely than boys to focus on one individual. Causal explanations for sex differences in preferences for differing social structures are proposed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

宝钢节能环保工作实践

钢铁业的节能环保工作对我国经济和社会的可持续发展具有十分重要的意义。本文介绍了宝钢股份公司近年来在节能环保工作中取得的主要实绩，重点阐述了宝钢在节能环保工作中的具体做法，并对今后的节能环保工作进行展望。     

Developmental links of adolescent disclosure, parental solicitation, and control with delinquency: Moderation by parental support.

This 4-wave study among 309 Dutch adolescents and their parents examined changes in adolescent disclosure, parental solicitation, and parental control and their links with the development of delinquent activities. Annually, adolescents and both parents reported on adolescent disclosure, parental solicitation, and parental control, and adolescents reported on delinquent activities and parental support. Latent growth curve analyses revealed a linear decline in parental control between ages 13 and 16. Adolescent disclosure decreased gradually in adolescent reports and showed an L-shaped pattern in father reports and a V-shaped pattern in mother reports. A stronger increase in delinquent activities was related to a stronger decrease in disclosure in mother and adolescent reports and to lower levels of disclosure in father reports. The linkages between levels of disclosure and delinquent activities were stronger in families with high parental support than in families with lower support. Furthermore, in lower parental support families, a stronger decrease in paternal control was related to a stronger increase in delinquent activities. In high parental support families, however, a stronger decrease in adolescent-reported parental control was related to a less strong increase in delinquent activities. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Decreased density of amygdaloid parvalbumin-positive interneurons and behavioral changes in dystonic hamsters (Mesocricetus auratus).

The dtsz hamster represents a model of primary paroxysmal nonkinesiogenic dyskinesia in which dystonic episodes can be induced by stress and anxious stimuli. This disease is regarded as a basal ganglia disorder. In fact, a deficit of striatal interneurons could play a key role in the pathophysiology in dystonic hamsters. Because the involvement of limbic structures cannot be excluded so far, the density of parvalbumin-immunoreactive (PV+) interneurons was determined in the basolateral amygdala in the present study. Compared with nondystonic hamsters, the density of PV+ interneurons was moderately decreased in the dtsz mutant. The functional consequence of this finding was examined by behavioral analyses. Examinations in the elevated plus maze and in a modified open field failed to disclose an enhanced anxiety-related behavior in dtsz hamsters (Mesocricetus auratus). A lower acoustic startle response and a stronger habituation in mutant hamsters than in controls correlated with a decreased body weight. Interestingly, prepulse inhibition was absent in mutant hamsters. The latter finding suggests a disturbed sensorimotor gating that can be related to alterations in both the basal ganglia nuclei and in limbic structures. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

日本及世界的镁供需状况

叙述了日本镁工业的发展,日本向国外投资进口镁的情况,统计分析了日本及世界近几年的镁供需状况、消费结构和今后的镁供需预测。调查分析了今后几年世界汽车用镁的发展。     

Introduction to the special section on cognitive processes and psychotherapy.

Theoretical models featuring cognitive processes have played a fundamental role in advancing knowledge of psychopathology and its treatment and have emphasized the importance of cognition in psychotherapy. Recognition of the importance of cognition in psychotherapy has led to a number of questions that are addressed by the articles in this special section of the Journal of Consulting and Clinical Psychology. Cognitive therapy is well represented in the articles in this special section, but therapeutic procedures that do not represent typical cognitive therapy are also examined. The articles in this special section focus on homework in the modification of cognition, cognition in the treatment of anxiety in adults and in children, change in depressive cognitions in children, cognition and rapid change in the treatment of depression, and the role of cognition in the treatment and prevention of depression that is recurrent. Examination of these types of questions holds the possibility of advances in existing treatments and the possibility of innovations in new treatments. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Impacts of Obstacles in East Asian Cross-Border Construction

In the light of the rapidly growing investment in infrastructure over the past 10 years, East Asia has developed into one of the most dynamic construction markets in the world. Despite progress in market-oriented reforms in some countries of this region, considerable obstacles in the form of varying technical standards and local preference policies still can lead to significant cost increases. Five categories of obstacles are identified in this paper: business environment risk, regulatory restrictions, contractual arrangements and differences in standards and in culture. The likelihood of occurrence of these obstacles as well as their impact on the profitability of cross-border construction are uncertain. The degree of their effect also varies across East Asian countries. Through an industry survey of top international construction firms based in Singapore, the significant obstacles or cost growth factors and their impact on cost growth in tendering, construction, and overheads are determined. In particular, the risk situations in China and Singapore are compared.     

Effect of Lanthanum on Plants under Supplementary Ultraviolet-B Radiation： Effect of Lanthanum on Flavonoid Contents in Soybean Seedlings Exposed to Supplementary Ultraviolet-B Radiation

The effects of solar ultraviolet-B (UV-B,280 ~320 nm) radiation on plants have been studiedintens-ively over the last two decades ,associated withthe re-search onthe biological i mpacts of stratospheric ozonedepletion .There are a large number of reports aboutthe effects of UV-B radiation on crops[1 ~5].Flavonoidcompounds , as secondary metabolites are consideredto play a major role in protecting plants from UV-Bdamage[6].These flavonoids generally absorbthe lightinthe region of 280 ~320 n…     

The role of personality in exposure and reactivity to interpersonal stress in relation to arthritis disease activity and negative affect in women.

The role of personality in the stress process was examined in older women with rheumatoid arthritis (RA) and osteoarthritis (OA) and in healthy controls (HCs). Reactivity was examined in relation to arthritis disease activity and negative affect. Interpersonal sensitivity and neuroticism were measured in questionnaires, and interpersonal stress, negative affect, and disease activity were assessed weekly for 12 weeks. Interpersonal sensitivity was defined as an excessive sensitivity to the behavior and feelings of others. Regarding exposure, neuroticism was related to interpersonal stress for all groups. Regarding reactivity, interpersonal sensitivity interacted with interpersonal stress to predicted elevations in negative affect in all groups and elevations in disease activity in the arthritis groups. There were no significant differences in the effects. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Contribution of endogenous opioids to gonadal hormones-induced temporomandibular joint antinociception.

The authors have recently demonstrated that the high serum estradiol level during the proestrus phase of the estrous cycle and that the administration of estradiol or progesterone in ovariectomized female and of testosterone in orchiectomized male rats significantly decrease formalin-induced temporomandibular joint (TMJ) nociception. In this study, the authors investigate the contribution of endogenous opioids to this antinociceptive effect of gonadal hormones in the TMJ formalin test. The opioid receptor antagonist naloxone was administrated either in the surrounding of the trigeminal sensory complex or in the TMJ region. The antinociceptive effect induced by endogenous estradiol in proestrus females and by exogenous estradiol in ovariectomized females was blocked by the administration of naloxone in the surrounding of the trigeminal sensory complex, but not in the TMJ region. The antinociceptive effect induced by the administration of progesterone in ovariectomized females and of testosterone in orchiectomized males was blocked by the administration of naloxone either in the surrounding of the trigeminal sensory complex or in the TMJ region. The authors conclude that central and peripheral opioid mechanisms mediate the antinociceptive effect of progesterone and testosterone, and central opioid mechanisms mediate the antinociceptive effect of estradiol. These findings suggest that the enhanced pain perception during low gonadal hormone periods in women and animals may be mediated by a decrease in endogenous opioid activity. This suggestion helps explain the higher severity of some pain conditions, such as temporomandibular dysfunctions in women than in men, that have no hormonal fluctuations. (PsycINFO Database Record (c) 2010 APA, all rights reserved)