112 research outputs found
Chiral Crystal Growth under Grinding
To study the establishment of homochirality observed in the crystal growth
experiment of chiral molecules from a solution under grinding, we extend the
lattice gas model of crystal growth as follows. A lattice site can be occupied
by a chiral molecule in R or S form, or can be empty. Molecules form
homoclusters by nearest neighbor bonds. They change their chirality if they are
isolated monomers in the solution. Grinding is incorporated by cutting and
shafling the system randomly. It is shown that Ostwald ripening without
grinding is extremely slow to select chirality, if possible. Grinding alone
also cannot achieve chirality selection. For the accomplishment of
homochirality, we need an enhanced chirality change on crystalline surface.
With this "autocatalytic effect" and the recycling of monomers due to rinding,
an exponential increase of crystal enantiomeric excess to homochiral state is
realized.Comment: 10 pages, 5 figure
Essential Skills for Family Medicine Residents Practicing Integrated Behavioral Health: A Delphi Study
BACKGROUND AND OBJECTIVES: There are several trends compelling physicians to acquire team-based skills for interprofessional care. One underdeveloped area of team-based skills for physicians is integrated behavioral health (IBH) in primary care. We used a Delphi method to explore what skills were needed for residents to practice integrated behavioral health.
METHODS: We conducted a literature review of IBH competencies and found 41 competencies across seven domains unique to physicians. Using a modified Delphi technique, we recruited family medicine educators to rate each competency as essential, compatible, or irrelevant. We also shared findings from the Delphi study with a focus group for additional feedback.
RESULTS: Twenty-one participants (12 physicians, nine behavioral health providers) completed all three rounds of the Delphi survey resulting in a list of 21 competencies. The focus group gave additional feedback.
CONCLUSIONS: Participants chose skills that required physicians to share responsibilities across the entire care team, were not redundant with standard primary care, and necessitated strong communication ability. Many items were revised to reflect team-based care and a prescribed physician role as a team facilitator. Next steps include determining how these competencies fit with a variety of medical providers and creating effective training programs that develop competency in IBH
- …