Hope and social support as resilience factors against psychological distress of mothers who care for children with chronic physical conditions.

On the basis of the multivariate conceptual model proposed by J. L. Wallander et al (1989), perceptions of hope and social support were hypothesized to serve as resilience factors against distress in mothers of children with chronic physical conditions. Relationships among these variables were tested. Ss were 111 mothers of 5 to 18-yr-old children who had cerebral palsy, spina bifida, or insulin-dependent diabetes mellitus. Tests used included the Hope Scale, Social Support Questionnaire-6, Brief Symptom Inventory, and Parents of Children With Disabilities Inventory. There were no differences in distress among mothers raising children with different conditions. Both hope and social support were associated negatively and uniquely with distress in these mothers. Perceptions of hope moderated the relationship between disability-related stress and maladjustment, suggesting a buffering effect when stress is high. However, hope did not appear to be a mediator of the relationship between social support and distress. These findings enhance our conceptual understanding of distress in maternal caregivers of children with a chronic physical condition. They also support improving sense of hope as is done in some problem-solving training programs to enhance coping in distressed individuals. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Single palladium atoms stabilized by β-FeOOH nanorod with superior performance for selective hydrogenation of cinnamaldehyde

Atomically dispersed single atom catalysts represent an ideal means of converting less valuable organics into value-added chemicals of interest with high effici...     

Modeling analysis of an enthalpy recovery wheel with purge air

A purge section is typically used to reduce the carryover of contaminants in enthalpy recovery wheels. A one-dimensional transient heat and mass transfer model is developed to analyze the performance of enthalpy recovery wheels both with and without purge air. The governing equations are coupled, and the variables are solved using a trial and error method. The enthalpy recovery wheel model without purge air is validated using previously published results with good agreement. Finally, the results of an enthalpy recovery wheel with purge air are presented, and indicate that there is an optimum wheel depth and rotation speed to achieve maximum performance for enthalpy recovery wheels with purge air.     

The anomalous currents in the front foils of the JET lost alpha diagnostic KA-2

We have examined the observed currents in the front foils of the JET Faraday cup lost alpha particle diagnostic KA-2. In particular, we have sought to understand the currents during Ohmic plasmas for which the ion flux at the detectors was initially assumed to be negligible. We have considered two sources of this current: plasma ions (both deuterium and impurity) in the vicinity of the detector (including charge exchange neutrals) and photoemission from scattered UV radiation. Based upon modeling and empirical observation, the latter source appears most likely and, moreover, seems to be applicable to the currents in the front foil during ELMy H-mode plasmas. A very thin gold or nickel foil attached to the present detector aperture is proposed as a solution to this problem, and realistic calculations of expected fluxes of lost energetic neutral beam ions during TF ripple experiments are presented as justification of this proposed solution.     

Meaning and measurement of performance rating accuracy: Some methodological and theoretical concerns.

We examined methodological and theoretical issues related to accuracy measures used as criteria in performance-rating research. First, we argued that existing operational definitions of accuracy are not all based on a common accuracy definition; we report data that show generally weak relations among different accuracy operational definitions. Second, different methods of true score development are also examined, and both methodological and theoretical limitations are explored. Given the difficulty of obtaining true scores, criteria are discussed for examining the suitability of expert ratings as surrogate true score measures. Last, the usefulness of using accuracy measures in performance-rating research is examined to highlight situations in which accuracy measures might be desirable criterion measures in rating research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Use of Structural Templates in Protein Backbone Modeling

The procedures used to model a protein structure are well established when the novel protein has high sequence similarity to a protein of known structure. Many proteins of interest have low (i.e. <50%) sequence similarity to any known structure. In these cases new approaches to prediction of structure are required.The use of sequence profiles which relate sequence to known structure has been proposed as one method to assign local regions of structure. As a first stage, templates or “icons” of the many relevant substructural motifs found in proteins must be defined. The sequences which gave rise to these structures are then aligned and a weighted profile obtained.Average structures of the 8 and 12 residue helix-turn and turn-helix motifs have been prepared. These coordinate templates were then used to scan through the Brookhaven protein structural database for similar, superimposable fragments. A composite template of 100 similar fragments for each element was found to be internally consistent to a rmsd=0.92 Å for HT8, 1.54 Å for HT12, 0.41 Å for TH8 and 1.40 Å for TH12. All of the sequences, from these structures, were then used to create an overall sequence profile.The four sequence profiles were scanned against the amino acid sequences of the proteins in the Brookhaven database: tertiary structure was correctly identified only about 10% of the time. This value is too low for predictive purposes. However, it could be increased by checking for multiple occurrences of the template in one protein.     

An Analysis of Academic Library 3D Printing LibGuides

3D Printing is increasingly becoming a popular service provided by academic libraries throughout the United States. Many patrons have little or no awareness of this subject matter, so library staff have created LibGuides to promote resources. One hundred LibGuides from academic libraries were analyzed to find which types of resources and which specific titles are being promoted surrounding the subject of 3D printing. Three types of resources emerged in this study: 3D printing and 3D modeling software titles, 3D model repositories, and books related to 3D printing. This article lists and analyzes 3D printing resources.