Improving the cohesion of nitron fibre

Conclusions It has been established that increase in cohesion of the fibres depends not only on the amount of sorbed latex but also on the character of the distribution of the latex particles on the surface of the fibre.Tashkent Textile and Light Industry Institute. Translated from Khimicheskie Volokna, No. 3, pp. 13–15, May–June, 1969.     

Fabrication and prospects for the development of polyester microfibres (review)

One of the promising trends in the development of textile fibres — the creation of technology and equipment for production of microfibres which makes it possible to obtain comfortable new materials was analyzed. The technological characteristics of fabrication of microfibres with two levels of filament linear density were examined: 0.1–0.03 tex by high-speed spinning (HSS) using special techniques, and 0.03–0.002 tex with sector structure based on two-component systems. The stable tendency toward development of new techniques for thinning filaments to create a new generation of textile materials was pointed out.All-Russian Scientific-Research Institute of Synthetic Fibres, Tver'. Translated from Khimicheskie Volokna, No. 3, pp. 3–10, May–June, 1995.     

Role of antigen-presenting cells in activation of human T cells by the streptococcal M protein superantigen: requirement for secreted and membrane-associated costimulatory factors

The requirements for T-cell activation by the streptococcal superantigen (SAg), pepsin-extracted M protein from type 5 streptococci (pep M5), were studied by monitoring Ca2+ influx and cell proliferation. Cells from a pep M5-specific T-cell line showed no change in intracellular Ca2+ levels in response to pep M5 when added alone or with freshly isolated autologous antigen-presenting cells (APC). However, after being incubated with pep M5 overnight, the APC secreted soluble factors that together with pep M5 induced a marked increase in intracellular Ca2+ levels in pep M5-specific T cells or freshly isolated, purified T cells. Removal of the SAg from the overnight APC-derived supernatants resulted in loss of the Ca(2+)-mobilizing activity, which was restored within seconds of addition of SAg, suggesting that both the SAg and the soluble factors synergize to induce the Ca2+ influx. Induction of cell proliferation required additional signals inasmuch as the activated APC-derived supernatant failed to synergize with pep M5 to induce the proliferation of purified T cells and required the presence of phorbol myristate acetate for this activity. Metabolically inactive, fixed APC were impaired in their ability to present pep M5 to T cells. Presentation of pep M5 by fixed APC was, however, restored when the APC-derived soluble costimulatory factors were added to the culture. Our data suggest that pep M5-induced activation of T cells is dependent on APC-derived soluble factors and an APC membrane-associated costimulatory molecule(s). These interactions may be important in regulating the in vivo responses to M proteins, could contribute to the severity or progression of infections with Streptococcus pyogenes, and may influence the susceptibility of individuals to its associated nonsuppurative autoimmune sequelae.     

Comment on "Psychological research and energy policy."

Comments that some points made by P. C. Stern and G. T. Gardner (see record 1982-01169-001) in their plea for an interdisciplinary approach and for input by psychologists into energy policy are misleading and nonconstructive. These include the deemphasis on simple but energy-efficient life-style changes and the overemphasis on the value of "one-shot" technology purchases. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of subject roles, demand characteristics, and suspicion on conformity.

Investigated whether 54 female undergraduates would adopt "apprehensive," "good," "negativistic," or "faithful" S roles when participating in a conformity experiment. A modified Crutchfield social communication apparatus was used, and the experiment was arranged so that only 1 of these 4 roles could be supported by results. Questionnaire data analysis shows a significant Awareness of Demand Characteristics * Suspicion interaction effect (p     

Structure of client attitudes toward counseling and their relation to client-counselor similarity.

Client attitudes toward their counseling experience were assessed by a post-counseling questionnaire. A cluster analysis of responses indicated 3 clusters, Evaluation, Comfort-Rapport, and Judged Counselor Competence which show unexpectedly low positive correlations with each other. The relationship of client-counselor similarity on the Myers-Briggs Type Indicator to client attitudes varies as a function of cluster content and nature of sample: Evaluation is curvilinear with similarity, middle similarity producing highest scores; Comfort-Rapport is related to high similarity for freshmen but to middle similarity for nonfreshmen; the effects of similarity tend to be more pronounced in opposite- than in same-sex pairings; high ratings of Judged Competence are associated with particular test dimensions rather than with overall similarity. (20 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)