Using Picture Storybooks to Support Young Children\u27s Science Learning

Children\u27s books are an important classroom resource for the study of animals because it is not practical for students to study many animals in their natural habitat. This article is the result of a collaborative research project undertaken by a science methods specialist and a children\u27s literature specialist. We analyzed books about animals that contained both narrative and expository writing and determined the best books that facilitated science learning. We share our criteria for book selection and examples of books that meet these criteria. Many support science learning in classrooms allowing children to make observations, raise questions and form conclusions from evidence

The Utilization of Nutrition Services in Family-Based Treatment by Members of the Society for Adolescent Health and Medicine in the care of Adolescents with Anorexia Nervosa

Family-Based Treatment (FBT), is the treatment of choice for adolescents with anorexia nervosa (AN). Much research supports its success, and yet little is known about its use by adolescent health care providers and their use of nutrition providers. Objective: This study aimed to identify the use of FBT and its treatment manual in the treatment of adolescent patients with AN by members of the Society for Adolescent Health and Medicine (SAHM), as well as the utilization of a dietitian in the treatment process. Method: In total, 72 SAHM members completed an online survey. Results: Overall, 84% of responding SAHM practitioners (81% in the USA) recommended FBT for the treatment of patients with AN --- with 54% of providers feeling that they had the necessary support and resources to implement FBT in their area of practice. Only 9% of those who practice FBT stated that the follow the treatment manual exactly as written, with 48% following just the principles of the manual. Of those who utilized FBT, 97% (98% in the USA), stated that a dietitian was used as part of the treatment team. Discussion: Given the need for consistency among practitioners, further research is needed to assess and define the role of the dietitian in FBT

Attachment of an electron-hole droplet to a donor

The attachment of an electron-hole droplet to a donor in Ge is considered using the density-functional method. We find the heat of solution of a donor in a droplet to be about 7 meV, and the electron density at the donor to be 32 times the carrier density in the droplet far from the donor. Effects on droplet pinning and recombination are discussed.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/22582/1/0000130.pd

A spectroscopic study of the blue stragglers in M67

Based on spectrophotometric observations from the Guillermo Haro Observatory (Cananea, Mexico), a study of the spectral properties of the complete sample of 24 blue straggler stars (BSs) in the old Galactic open cluster M67 (NGC 2682) is presented. All spectra, calibrated using spectral standards, were recalibrated by means of photometric magnitudes in the Beijing-Arizona-Taipei-Connecticut system, which includes fluxes in 11 bands covering ~3500-10000 A. The set of parameters was obtained using two complementary approaches that rely on a comparison of the spectra with (i) an empirical sample of stars with well-established spectral types and (ii) a theoretical grid of optical spectra computed at both low and high resolution. The overall results indicate that the BSs in M67 span a wide range in Teff(~ 5600 -12600 K) and surface gravities that are fully compatible with those expected for main-sequence objects (log g = 3.5 -5.0 dex).Comment: 10 pages, 10 figures, published in MNRAS (2008, Volume 390, Issue 2, pp. 665-674

Ground state energy of small electron-hole drops

The ground state energy of small electron-hole drops is calculated for droplets ranging in size from 10 to 10,000 pairs. A new value for the bending energy of 1.1 x 10-10 erg/cm is derived. We also give a simple highly accurate formula for the total energy per pair. The surface energy is extracted from the total energy and found to agree well with a previous self-consistent calculation. The density at the center of the drop remains essentially constant over the entire range of N, indicating that the drop is not dramatically compressed by the surface tension.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/23730/1/0000702.pd