Why Family Medicine Program Directors Leave Their Position.

BACKGROUND AND OBJECTIVES: Family medicine residency program directors (PD) oversee the training of every new family physician in the United States. The median tenure of family medicine PDs is 4.5 years, and factors relating to length of tenure and reasons for departure are not well known. This exploratory study examined why family medicine PDs leave their position. METHODS: We conducted in-depth interviews with family medicine PDs who recently left their director position. Semistructured and structured questions asked about their PD experience and factors contributing to stepping away from the PD role. We analyzed answers quantitatively and qualitatively. RESULTS: When comparing cases with longer (>6 years) and shorter tenures (≤6 years), 25 PDs described differing pathways but few major differences in why they left the position. The two groups were distinguished more by their similarities than their differences. The majority left voluntarily due to a combination of factors, not a single factor. Most PDs left the position because of their desire and opportunities to move up, move over, or move on, and not because of dissatisfaction with the job. Succession plans helped with PD decisions to leave the position, knowing that the program was in good hands. CONCLUSIONS: Family medicine PDs left the position due to multiple factors primarily related to career pathway choices and not solely due to demands of the job. Additional research with PDs of very short tenures and long tenures may yield further details about sustaining PDs in residency education to successfully train the next generation of family physicians.

Occupational Radiation Protection Aspects of Alkaline Leach Uranium in Situ Recovery (ISR) Facilities in the United States.

In situ recovery or in situ leach (ISR/ISL) uranium facilities, also referred to in the past as "uranium solution mining" have operated since the late 1960s in the US and in recent years have accounted for over 70% of US production and, internationally, approximately half of worldwide uranium supplies. Note that throughout this paper, the uranium in situ recovery process, also known as in situ leach, will be abbreviated as "ISR." This paper presents a summary of the occupational radiation protection aspects of typical ISR processes being employed in the United States today that have traditionally used alkaline-based uranium recovery solutions known as lixiviants. The paper describes the health physics and associated monitoring programs necessary to adequately measure and control radiological doses to workers based on the radiological character of these processes. Although many radiological characteristics are similar to that of conventional mills, conventional-type tailings as such are not generated. However, liquid and solid by-product materials may be generated and impounded, which can result in sources of occupational exposure. Some special monitoring considerations are required due to the manner in which Rn gas is involved in the process. The major aspects of the health physics and radiation protection programs that have been developed at these facilities over many years are discussed and listed in the Conclusion section of the paper.

The use of variable temperature 13 C solid-state MAS NMR and GIPAW DFT calculations to explore the dynamics of diethylcarbamazine citrate.

Experimental 13 C solid-state magic-angle spinning (MAS) Nuclear Magnetic Resonance (NMR) as well as Density-Functional Theory (DFT) gauge-including projector augmented wave (GIPAW) calculations were used to probe disorder and local mobility in diethylcarbamazine citrate, (DEC)+ (citrate)- . This compound has been used as the first option drug for the treatment of filariasis, a disease endemic in tropical countries and caused by adult worms of Wuchereria bancrofti, which is transmitted by mosquitoes. We firstly present 2D 13 C─1 H dipolar-coupling-mediated heteronuclear correlation spectra recorded at moderate spinning frequency, to explore the intermolecular interaction between DEC and citrate molecules. Secondly, we investigate the dynamic behavior of (DEC)+ (citrate)- by varying the temperature and correlating the experimental MAS NMR results with DFT GIPAW calculations that consider two (DEC)+ conformers (in a 70:30 ratio) for crystal structures determined at 293 and 235 K. Solid-state NMR provides insights on slow exchange dynamics revealing conformational changes involving particularly the DEC ethyl groups.

Draft Genome Sequence of Brevibacterium linens AE038-8, an Extremely Arsenic-Resistant Bacterium.

To understand the arsenic biogeocycles in the groundwaters at Tucumán, Argentina, we isolated Brevibacterium linens sp. strain AE38-8, obtained from arsenic-contaminated well water. This strain is extremely resistant to arsenicals and has arsenic resistance (ars) genes in its genome. Here, we report the draft genome sequence of B. linens AE38-8.