Self-regulation of prejudiced responses: Implications for progress in prejudice-reduction efforts.

A model suggesting that prejudiced-related discrepancy experiences facilitate prejudice reduction efforts is proposed and tested. Prejudice-related discrepancies concerning gays were activated among low and high prejudiced Ss in 2 experiments. Results indicated that low-prejudiced (LP) Ss' violations of their LP and well-internalized attitudes produced compunction, self- and discrepancy-focused thoughts, attention to discrepancy-relevant information (Exp 1), and a slowing of responses (Exp 2). These findings indicated that LP Ss' discrepancies instigated a self-regulatory cycle that, theoretically, should help in achieving control over subsequent prejudiced responses. Evidence of effective self-regulation was found in a task following discrepancy activation. Specifically, LP Ss effectively inhibited prejudiced responses to jokes about gays as a consequence of discrepancy activation (Exp 2). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Qualitative and quantitative preservation of the fine structure of absorptive cells in cultured biopsies of human small-intestine

The fine structure of the absorptive cells in human small-intestinal biopsies cultured for 6, 24, and 48 h was analyzed qualitatively and quantitatively. The findings show generally good preservation of the cultured absorptive cells and a normal distribution, size, and relative volume of their cell organelles, but there was a systematic decrease in the apical cell surface and an increase in the number of apical vesicles and tubules after culturing. Since the apical vesicles and tubules are thought to have a function in the transport of cell-coat material from the Golgi apparatus to the cell surface, these findings raise the question of whether a delayed transport or extrusion of cell surface material occurs. The diminished relative volume of the mitochondria and the increased signs of autophagy in some poorly preserved absorptive cells, are assumed to be an adaption to less favourable culture conditions.     

Avoiding the tarpits-software's challenge

A course that allows teams of undergraduate students to design and develop large computer software systems for Sandia National Laboratories (SNL) is described. The students are divided into project teams, the projects typically contain from 4000 to 6000 lines of code and require a year to develop. Working prototypes of each project are designed, implemented, and tested during the fall semester. In the spring semester, students fine-tune and prepare the software systems for incorporation into the laboratory environment at SNL. Some projects are developed further and become subjects for master's theses     

The pit cell: description of a new type of cell occurring in rat liver sinusoids and peripheral blood

Pit cells--a new type of cell first described here and so named because they contain highly characteristic granules--are situated in the wall of rat liver sinusoids, and have hyaloplasmic pseudopodia intermingling with the microvilli of the parenchymal cells. The characteristic granules are mainly situated at one side of the nucleus, the other side showing organelle-free hyaloplasm. Pit cells are also found in portal tracts and in granuloma-like cellular aggregates. They also occur in rat peripheral blood, although there are morphological differences between cells in these two sites. Pit cells can be regarded as regular inhabitants of the sinusoidal wall, and therefore belong to the series of sinusoidal cells, i.e., the endothelial (Wisse, 1972), Kupffer (Widmann et al., 1972; Wisse and Daems, 1970; Wisse, 1974a, b), and fat-storing cells (Ito, 1973). Pit cells do not phagocytose and do not react to a great number of experimental conditions, to which endothelial and Kupffer cells do react (Wisse, 1972, 1974b). Mitosis has been observed in a pit cell. The function of pit cells remains obscure, but an endocrine function is suggested by the morphology of their highly characteristic granules.     

Major depression and irritable bowel syndrome: is there a relationship?

BACKGROUND: Irritable bowel syndrome (IBS) has been reported in 10% to 22% of adults. Seventy percent to 90% of patients with IBS who seek medical attention have psychiatric comorbidity, most commonly major depression. In contrast, few studies have looked at the prevalence of IBS among psychiatric patients. METHOD: Using a semistructured clinical interview to study the prevalence of IBS, we compared 56 patients seeking treatment for major depression in an outpatient setting to an age- and sex-matched control group of patients (N = 40) who were seeking treatment in a general physician's office for other medical illnesses. The control group had no Axis I disorders. IBS was diagnosed according to the criteria of Drossman et al. RESULTS: Twenty-seven percent (N = 15) of patients with major depression met criteria for IBS in contrast to 2.5% (N = 1) of the control group (p = .0005). Patients with major depression and IBS were more likely to report symptoms of back pain, weakness, heartburn, and nocturnal bowel movements as well as a personal or family history of bowel disease compared with patients with major depression but without IBS. CONCLUSION: IBS is fairly common in patients seeking treatment for major depression. Prospective studies should address the question whether treatment of major depression leads to an improvement or resolution of the symptoms of IBS.     

Pr0.6Sr0.4CoO3−δ electrocatalyst for solid oxide fuel cell cathode introduced via infiltration

Effects of infiltrated Pr_0.6Sr_0.4CoO_3−δ (PSCo) electrocatalyst on SOFC cathode performance have been studied. Nano-sized particulate catalysts, deposited on surfaces of a composite cathode of Sm₂O₃ doped CeO₂ (SDC) and La_1−xSr_xCo_1−yFe_yO_3−δ (LSCF), are assumed to effectively widen active sites, or triple phase boundaries, for the oxygen reduction reaction. Area specific resistance of commercially available cells has been decreased by 36–40% with the addition of 23 wt% PSCo electrocatalyst on cathode. Analysis of the impedance spectra demonstrates that PSCo electrocatalyst plays a significant role in dissociation of oxygen molecules and adsorption of oxygen atoms into the cathode. A total of 200 h operation of the cells demonstrated that catalytic activity of PSCo has not been significantly degraded. Simultaneous operations of multiple cells using a parallel-cell testing system have made it possible to compare the performance of several cells with high reliability.     

Book reviews

Home Truths: Property Ownership and Housing Wealth in Australia. Blair Badcock and Andrew Beer. Melbourne University Press, Melbourne, 2000. ISBN 0522848931 (paperback). 212 pp.; bibliography and index. RRP $38.45.

Cities for Children: Children's Rights, Poverty and Urban Management. Sheridan Bartlett, Roger Hart, David Sattherwaite, Ximena de la Barra and Alfredo Missair. Earthscan, London, 1999. ISBN 185383470X. 305 pp. RRP $39.95

The Deliberative Practitioner: Encouraging Participatory Planning Processes. John Forester. MIT Press, Cambridge, Mass., 1999. ISBN 0262062070. 305 pp.; bibliography and index. RRP $54.95

Spaces of Hope: David Harvey. Edinburgh University Press, Edinburgh, 2000. ISBN 0748612688. 293 pp.. RRP $44.00

The Creative City: A Toolkit for Urban Innovators. Charles Landry. Comedia and Earthscan, Stroud and London, 2000. ISBN 1853836133 (paperback). 300 pp.; bibliography and index. RRP $48.50

Urban Regeneration: A Handbook. Peter Roberts and Hugh Sykes (eds). Sage, London, 2000. ISBN 0761967176 (paperback). 320 pp.; bibliography and index. $65.00

Sydney: The Emergence of a World City. John Connell (ed.). Oxford University Press, Melbourne, 2000. ISBN 0195507487 (paperback). 381pp.; bibliography and index. RRP $35.00

Cultural Geography: Themes, Concepts, Analyses. William Norton. Oxford University Press, Oxford, 2000. ISBN 0195413075 (paperback). 379 pp.; bibliography, glossary and index. RRP $50.95     

A culture-dependent and -independent approach for the identification of lactic acid bacteria associated with the production of nem chua,a Vietnamese fermented meat product

In this study, the diversity of the native lactic acid bacteria (LAB) population in nem chua, a popular traditional Vietnamese uncooked fermented meat, was described using a combination of culture-dependent and culture-independent methods. A total of two hundred seventy-three LAB isolates were subjected to a polyphasic identification approach combining (GTG)₅-PCR fingerprinting and phenylalanyl-tRNA synthase α subunit (pheS) and RNA polymerase α subunit (rpoA) gene sequence analysis. LAB associated with nem chua were identified as Lactobacillus pentosus (21%), Lactobacillus plantarum (29.7%), Lactobacillus brevis (5%), Lactobacillus paracasei (0.4%), Lactobacillus fermentum (0.7%), Lactobacillus acidipiscis (0.4%), Lactobacillus farciminis (23%), Lactobacillus rossiae (0.4%), Lactobacillus fuchuensis (0.7%), Lactobacillus namurensis (0.4%), Lactococcus lactis (0.4%), Leuconostoc citreum (9.5%), Leuconostoc fallax (1%), Pediococcus acidilactici (1%), Pediococcus pentosaceus (4%), Pediococcus stilesii (1%), Weissella cibaria (0.7%) and Weissella paramesenteroides (0.7%). Furthermore, PCR-DGGE was also applied as a culture-independent method in this study. Results indicated the presence of species of which no isolates were recovered, i.e. Lactobacillus helveticus/crispatus, Lactococcus garvieae and Vagococcus sp. Conversely, not all isolated bacteria were detected by PCR-DGGE. Principal component and discriminant analysis disclosed correlations between the different production locations and certain isolated LAB species and strains and/or DGGE bands suggesting possible influences of locally prevailing production practices on the nem chua LAB microbiota.     

Why rational argument fails the genetic modification (GM) debate

Genetic modification (GM) of crops provides a methodology for the agricultural improvements needed to deliver global food security. However, public opposition to GM-food is great. The debate has tended to risk communication, but here we show through study of a large nationally representative sample of British adults that public acceptance of GM-food has social, cultural and affective contexts. Regression models showed that metaphysical beliefs about the sanctity of food and an emotional dislike of GM-food were primary negative determinants, while belief in the value of science and favourable evaluation of the benefits-to-risks of GM-food were secondary positive determinants. Although institutional trust, general knowledge of the GM-food debate and belief in the eco-friendliness of GM-food were all associated with acceptance, their influence was minor. While a belief in the sanctity of food had a direct inverse effect on GM acceptance, belief in the value of science was largely mediated through favourable perception of benefits-to-risks. Furthermore, segmentation analysis demonstrated that anxiety about GM-food had social and cultural antecedents, with white men being least anxious and older vegetarian women being most anxious. Rational argument alone about the risks and benefits of GM-food is unlikely to change public perceptions of GM-technology.