Adlayer formation on C-plane (0001) and R-plane ( 1 1 ‒ 0 2 ) Al2O3 surfaces.

Adlayers on C-plane (0001) and R-plane ( 1 1 ‒ 02 ) terminated surfaces of corundum phase aluminum oxide were synthesized by annealing mixtures of two oxide powders, aluminum oxide with an additive. Using high-angle annular dark field scanning transmission electron microscopy, the adsorbed layers were characterized, and image simulations aided interpretation of the results. The adlayers were pseudomorphic, one atomic layer thick and with a fractional site occupancy. Atomic positions of the adlayer atoms relaxed and changed relative to the bulk structure, where there is evidence that the magnitude of the relaxation is sensitive to the ionic radius of the adsorbate. The pseudomorphic adlayer structure formed for different elements including, but not limited to, the lanthanides (i.e., Ge, Ba and Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm).

Approaches for the quantitative analysis of oxidation state in cerium oxide nanomaterials.

Cerium oxide nanomaterials (nanoceria, CNMs) are receiving increased attention from the research community due to their unique chemical properties, most prominent of which is their ability to alternate between the Ce3+ and Ce4+ oxidation states. While many analytical techniques and methods have been employed to characterize the amounts of Ce3+ and Ce4+ present (Ce3+/Ce4+ ratio) within nanoceria materials, to-date no studies have used multiple complementary analytical tools (orthogonal analysis) with technique-independent oxidation state controls for quantitative determinations of the Ce3+/Ce4+ ratio. Here, we describe the development of analytical methods measuring the oxidation states of nanoceria analytes using technique-independent Ce3+ (CeAlO3:Ge) and Ce4+ (CeO2) control materials, with a particular focus on x-ray photoelectron spectroscopy (XPS) and electron energy loss spectroscopy (EELS) approaches. The developed methods were demonstrated in characterizing a suite of commercial nanoceria products, where the two techniques (XPS and EELS) were found to be in good agreement with respect to Ce3+/Ce4+ ratio. Potential sources of artifacts and discrepancies in the measurement results were also identified and discussed, alongside suggestions for interpreting oxidation state results using the different analytical techniques. The results should be applicable towards producing more consistent and reproducible oxidation state analyses of nanoceria materials.

Supplemental Offer and Acceptance Program Outcomes in a Family Medicine Residency Network.

BACKGROUND AND OBJECTIVE: The National Resident Matching Program's (NRMP) Supplemental Offer and Acceptance Program (SOAP) places unmatched applicants in residency programs. We examined the outcomes and experience of family medicine residency programs that matched with residents through SOAP. METHODS: In 2020, all program directors in a regional family medicine residency network whose programs had participated in SOAP (n=23) completed a survey on their experience with SOAP and characteristics of residents who were matched via SOAP (n=52) anytime between 2012 and 2020. Resident outcome measures included graduation, remediation, leadership, fit, and comparisons of Milestones areas. Experiences with the SOAP process included factors that may have led the program to SOAP and advice for other programs participating. RESULTS: Eighty-seven percent of residents matched via the SOAP graduated, and the majority compared favorably to other residents. Two-thirds of program directors were very likely to hire their residents matched via the SOAP. Rural programs had similar outcomes, although rural-track positions represented 30% of all residents matched via the SOAP in the study. More than half of all responding program directors reported being underprepared for the SOAP process. Program directors recommend getting familiar with the NRMP resources and setting aside time for key personnel in case a program needs to participate in SOAP. CONCLUSIONS: The vast majority of residents matched via the SOAP are well prepared for training, contribute to their programs, and perform as well as other residents. Rural programs are more likely to place residents via SOAP than nonrural programs.

Perceived Value of Osteopathic Recognition.

BACKGROUND AND OBJECTIVES: In 2020 the Accreditation Council on Graduate Medical Education (ACGME) became the sole accrediting body for osteopathic and allopathic residency programs, with an option for programs to apply for Osteopathic Recognition (OR) to distinguish their training in osteopathic principles and practice. There is limited research regarding this transition. The goal of our study was to assess the perceived value of OR and perceived difficulty of obtaining OR for family medicine residency programs. METHODS: We performed analyses regarding the difficulty of obtaining OR status and the value of OR and Osteopathic Principles and Practice (OPP) using questions on the 2020 Council of Academic Family Medicine Educational Research Alliance (CERA) omnibus survey. RESULTS: Of the 280 program directors (PD) responding, 69 (24.6%) had OR status, 126 (45.0%) were considering applying or would apply if needed resources were available, and 85 (30.4%) were not considering OR. Of the 73 PDs reporting on experience with the OR process, 28 (38.4%) found it "very smooth," 30 (41.1%) found it "a little bumpy," and 15 (20.5%) found it "very bumpy"; 87.0% of PDs (60 of 69) with OR felt it had value in recruiting DO students and 31.8% (22/69) in recruiting MD students; 86.9% of programs with OR status perceived OPP to be somewhat or very valuable in enhancing patient satisfaction compared to 77% of those considering OR and 44.7% not considering OR. CONCLUSIONS: Program directors perceive value in OR status for recruiting and in osteopathic practice for patient care. Since 75.4% of responding program directors have or are interested in achieving OR status, further research is needed on its benefits and barriers.

Scalable microresonators for room-temperature detection of electron spin resonance from dilute, sub-nanoliter volume solids.

We report a microresonator platform that allows room temperature detection of electron spins in volumes on the order of 100 pl, and demonstrate its utility to study low levels of dopants in perovskite oxides. We exploit the toroidal moment in a planar anapole, using a single unit of an anapole metamaterial architecture to produce a microwave resonance exhibiting a spatially confined magnetic field hotspot and simultaneously high quality-factor (Q-factor). To demonstrate the broad implementability of this design and its scalability to higher frequencies, we deploy the microresonators in a commercial electron paramagnetic resonance (EPR) spectrometer operating at 10 GHz and a NIST-built EPR spectrometer operating at 35 GHz. We report continuous-wave (CW) EPR spectra for various samples, including a dilute Mn2+-doped perovskite oxide, CaTiO3, and a transition metal complex, CuCl22H2O. The anapole microresonator presented here is expected to enable multifrequency EPR characterization of dopants and defects in perovskite oxide microcrystals and other volume-limited materials of technological importance.

Smiles for Life: A National Oral Health Curriculum for Family Medicine. A model for curriculum development by STFM groups.

The Society of Teachers of Family Medicine Group on Oral Health released Smiles for Life: A National Oral Health Curriculum for Family Medicine in October 2005 to address a need for high-quality residency and medical school curricula in an area of documented physician knowledge deficit. This article describes the background, planning, fund-raising, development, dissemination, and impact of the curriculum. Lessons learned, particularly in the areas of long-distance collaboration, fund-raising, and marketing are reviewed with a goal of serving as a model for future curriculum development efforts.

Investigation of Electric Field-Induced Structural Changes at Fe-Doped SrTiO3 Anode Interfaces by Second Harmonic Generation.

We report on the detection of electric field-induced second harmonic generation (EFISHG) from the anode interfaces of reduced and oxidized Fe-doped SrTiO3 (Fe:STO) single crystals. For the reduced crystal, we observe steady enhancements of the susceptibility components as the imposed dc-voltage increases. The enhancements are attributed to a field-stabilized electrostriction, leading to Fe:Ti-O bond stretching and bending in Fe:Ti-O6 octahedra. For the oxidized crystal, no obvious structural changes are observed below 16 kV/cm. Above 16 kV/cm, a sharp enhancement of the susceptibilities occurs due to local electrostrictive deformations in response to oxygen vacancy migrations away from the anode. Differences between the reduced and oxidized crystals are explained by their relative oxygen vacancy and free carrier concentrations which alter internal electric fields present at the Pt/Fe:STO interfaces. Our results show that the optical SHG technique is a powerful tool for detecting structural changes near perovskite-based oxide interfaces due to field-driven oxygen vacancy migration.

Addressing disparities in children's oral health: a dental-medical partnership to train family practice residents.

Providing oral health care to rural populations in the United States is a major challenge. Lack of community water fluoridation, dental workforce shortages, and geographical barriers all aggravate oral health and access problems in the largely rural Northwest. Children from low-income and minority families and children with special needs are at particular risk. Family-centered disease prevention strategies are needed to reduce oral health disparities in children. Oral health promotion can take place in a primary care practitioner's office, but medical providers often lack relevant training. In this project, dental, medical, and educational faculty at a large academic health center partnered to provide evidence-based, culturally competent pediatric oral health training to family medicine residents in five community-based training programs. The curriculum targets children birth to five years and covers dental development, the caries process, dental emergencies, and oral health in children with special needs. Outcome measures include changes in knowledge, attitudes, and self-efficacy; preliminary results are presented. The program also partnered with local dentists to ensure a referral network for children with identified disease at the family medicine training sites. Pediatric dentistry residents assisted in didactic and hands-on training of family medicine residents. Future topics for oral health training of family physicians are suggested.

Delivering preventive oral health services in pediatric primary care: a case study.

Dental disease, the most prevalent chronic disease of childhood, affects children's overall health and ability to succeed. Integrating oral health into routine well-child checkups is an innovative and practical way to prevent dental disease. The Washington Dental Service Foundation is partnering with Group Health Cooperative, a large integrated delivery system, and other providers in Washington State to change the standard of care by incorporating preventive oral health services into primary care for very young children. This paper describes systemic and policy changes for engaging primary care providers in oral health, including provider training, expanding access to dental care, and reimbursement.