Effect of rilmenidine on the cadiovascular responses to stress in the conscious rabbit

The acetoacetyl-CoA reductase and the polyhydroxyalkanoate (PHA) synthase from Ralstonia eutropha (formerly Alcaligenes eutrophus) were expressed in Escherichia coli, Klebsiella aerogenes, and PHA-negative mutants of R. eutropha and Pseudomonas putida. While expression in E. coli strains resulted in the accumulation of poly(3-hydroxybutyrate) [PHB], strains of R. eutropha, P. putida and K. aerogenes accumulated poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [poly(3HB-co-3HHx)] when even chain fatty acids were provided as carbon source, and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [poly(3HB-co-3HV)] when odd chain fatty acids were provided as carbon source. This suggests that fatty acid degradation can be directly accessed employing only the acetoacetyl-CoA reductase and the PHA synthase. This is also the first proof that the PHA synthase from R. eutropha can incorporate 3-hydroxyhexanoate (3HHx) into PHA and has, therefore, a broader substrate specificity than previously described.     

Should negative affectivity remain an unmeasured variable in the study of job stress?

We predicted that the dispositional construct negative affectivity (NA) would be related to self-report measures of job stress and job strain and that observed relationships between these stress and strain measures would be inflated considerably by NA. Results of a study of 497 managers and professionals were largely consistent with those expectations. Thus, we discuss implications for NA as both a methodological nuisance and a substantive cause of stressful work events, and conclude that NA should no longer remain an unmeasured variable in the study of job stress. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Vaginal and cervical squamous cell dysplasia in women exposed to diethylstilbestrol in utero

Two hundred and fifty patients were examined because of a history of in utero exposure to diethylstilbestrol (DES) or because of the presence of physical findings suggesting such exposure. One thousand biopsies were examined for the presence of neoplasia and then compared to the colposcopic findings. There were no cases of glandular or squamous cell carcinoma. Fifteen (6 per cent) of the patients had squamous cell dysplasia. The degree of dysplasia was mild in 11 and moderate in only 4 (1.6 per cent) of the women. The majority of the cases of dysplasia involved the cervix, whereas the vagina was involved in only four cases, with simultaneous cervical dysplasia in three of these. Patients with cervical mosaic and white epithelium had dysplasia on biopsy much more frequently as compared with patients with similar colposcopic appearances in the vagina. Our results suggest a low incidence of significant squamous precancerous change in the DES-exposed population and provide evidence that colposcopic data concerning dysplasia pertinent to the cervix cannot be applied without modification to the evaluation of dysplasia in vaginal adenosis.     

Logic functions for magnetic bubble devices

An analysis has been made of the number and types of logical functions which can be performed using the interaction of circular magnetic domains in rare earth iron oxides. Multiple logic functions are found to be produced simultaneously at any logical area. These conjunctive output sets have been categorized. Several conjunctive logic gates have been designed, fabricated, and tested successfully in Sm0.55Tb0.45FeO3using Permalloy overlays. Utilizing a circuit in which AND/OR logic gates are coupled to a dynamic memory bank, the total correlation of two data streams has been performed. It is shown how this multiply accessed dynamic memory serves to establish the correlation threshold.     

Changing Type A behaviour.

Reviews research dealing with alteration of coronary-prone (Type A) behavior. Basic dimensions of the problem and evidence concerning various approaches to change are discussed, including behavior modification, psychotherapeutic techniques, and combined approaches. Additional treatment issues reviewed include individual vs group-based treatment, therapeutic-unit size and constitution, preventive Type-A therapy, client characteristics and commitment to change, facilitator characteristics, location and duration of treatment, and measurement of change. Implications for practitioners are drawn and suggestions made for future research. (French abstract) (66 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Scientific problem solver model: A resolution for professional controversies in school psychology.

The school psychology scientific problem solver model (SPSM) provides a superordinate training structure that facilitates resolution of 3 major controversies affecting the preparation of school psychologists: scientist vs practitioner, psychologist vs educator, and the National Council for Accreditation of Teacher Education—National Association of School Psychologists vs the American Psychological Association standards for accreditation. The present article describes the adaptation of the SPSM to school psychology training and explores the implications of the SPSM for the resolution of these professional issues. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of overlearning on recall and usage of stored information.

Studied the influence of the strength of associative bonds on word usage. In Exp. I with 91 undergraduates in 2 groups, Ss were given 8 and 16 repetitions of the paired words, respectively. Results show no significant differences in the usage of the experimental words for the stories, although memory tests reveal differences in the degree of learning. A 2nd within-group analysis of data from 5 independent groups of undergraduates (Exp. II) used scores on memory tests to assign Ss to subgroups based on the amount of learning and overlearning of the paired words they exhibited. Again, results show no differences in word usage. The concepts of associative bonds, reinforcement, and overlearning derive from studies of learning, but seem inadequate when generalized to problem situations. Problem situations introduce a selective function that alters the dynamics of the associative process and these dynamics show considerable individual variation and stability. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A new type of test answer sheet.

An examination sheet in which the "outlines of the letters occupy the same space as the registration markings on a standard answer sheet suitable for machine scoring" is described. "The examinee is instructed to blacken out the letter that goes with the answer he has chosen as being correct." Seven benefits of the new system are specified. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Neodymium neutron cross section measurements

Neutron capture and transmission measurements were performed by the time-of-flight technique at the Rensselaer Polytechnic Institute LINAC using metallic neodymium samples. The capture measurements were made at the 25-m-long flight station with a 16-segment NaI(Tl) multiplicity detector, and the transmission measurements were performed at 15 and 25 m flight stations with a 6Li glass scintillation detector. After the data were collected and reduced, resonance parameters were determined by simultaneously fitting the transmission and capture data with the multilevel R-matrix Bayesian code SAMMY. The resonance parameters for all naturally occurring neodymium isotopes lie within the energy range of 1.0-500 eV. The resulting resonance parameters were used to calculate the capture resonance integral with this energy region and were compared to calculations obtained when using the resonance parameters from ENDF-B/VI. The RPI parameters gave a resonance integral value of 32 +/- 0.5 b that is approximately 7% lower than that obtained with the ENDF-B/VI parameters. The current measurements significantly reduce the statistical uncertainties on the resonance parameters when compared with previously published parameters.     

Allgemeine Technologie der Lebensmittelherstellung und -zubereitung sowie der Bedarfsgegenst?nde

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