Medication reconciliation for pediatric oncology patientparticipants enrolled in clinical trials often reveals the use of chemical complementary medicine alongside protocol therapeutic agents. Considering the blurry delineation between clinical ethics and research ethics, this paper demonstrates how complementary medicine-related protocol violations introduce ethical questions of who should be included and excluded from clinical trials and offers recommendations on how to manage physician-patient-family interactions around these challenging issues.

Results from the “Potato Ecosystem Project,” a cropping systems study in northern Maine, were used to test the hypothesis that greater reliance on organic nutrient sources and less reliance on synthetic fertilizer sources can benefit weed management efforts. ‘Atlantic’ potato was grown in a 2-yr rotation within a factorial arrangement of three pest management systems, two soil management systems, and both rotation entry points. Weed control in the conventional (CONV) pest management system relied on full rates of herbicides, whereas the biointensive (BIO) system relied exclusively on cultivation. The reduced input (RI) pest management system relied on cultivation in 1991 and 1992 and on 50% of standard herbicide rates plus cultivation from 1993 to 1995. The two soil management systems, unamended (barley/red clover rotation crop; 1× synthetic fertilizer for potato) and amended (pea/oat/hairy vetch green manure rotation crop; manure, compost, and 0.5× synthetic fertilizer for potato) contrasted practices typical for the region to those designed to achieve rapid improvements in soil quality. Midseason weed biomass in potato was dominated by common lambsquarters. In 1991 and 1992, weed biomass in potato was least in the CONV system and did not differ between the RI and BIO systems. In 1993, weeds in both RI and CONV potatoes were effectively suppressed below the level measured in the BIO system. Soil management had no effect on weed biomass from 1991 to 1993 but became an important factor affecting weeds in the BIO system in 1994 and 1995. Weed biomass was 77% lower in 1994 and 72% lower in 1995 in the amended soil management system than in the unamended system. No significant yield loss due to weeds was detected in the 1994 BIO system, but in 1995 yield loss due to weeds was 37% in the unamended system compared to 12% in the amended system. Soil management effects on weeds in the 1994 BIO pest management system carried through to the following season's germinable seed bank. Density of germinable common lambsquarters seed (0 to 10 cm soil depth) in the 1995 BIO system was 4,082 m−2 in the unamended soil management system compared to 1,280 m−2 in the amended soil management system. We suggest that organic amendments and green manure promote a potato crop better able to compete with weeds and that these inputs be considered as potentially important components of integrated weed management systems that have minimal reliance on herbicides.

In November 1966 composer and improviser Bill Dixon recorded a seventeen-minute-long “voice letter” to jazz writer Frank Kofsky. This letter may be analyzed as a critical intervention by Dixon, an attempt to change the context of interpretation around improvised music. But the voice letter may also be heard and analyzed as a kind of performance. As Dixon speaks, one can hear the rumbling and roar of the city as well as the staccato sounds of car and truck horns unfolding in dynamic counterpoint to his words. In this essay, I put the voice letter into dialogue with Dixon's personal history, his writings and interview statements, and some of his contemporaneous musical and multi-generic projects, especially his collaboration with dancer and choreographer Judith Dunn. I show how the letter maps Dixon's and Dunn's positions within a geography of intellectual circles, experimental artistic communities, and low-wage employment networks. By extension, I examine how the voice letter, as critical intervention and performance, points us to a nuanced understanding of black experimental music of the 1960s as a socially inflected, self-conscious and, ultimately, serious engagement with various modes of artistic production and thought, carried out under conditions of both precarity and inspiration.

We report the results of an investigation on the structural evolution of a potential new thermoelectric material, Cu3SbSe3, as a function of temperature from 25 to 390 °C. From high-temperature x-ray diffraction data, the refined lattice parameters were seen to change nonlinearly, but continuously, with temperature, with an increased rate of thermal expansion in the a and b lattice parameters from around 125 °C to 175 °C and negative thermal expansion in the c axis from around 100 °C to 175 °C. Crystallographic charge flipping analysis indicated an increase in the disorder of the copper cations with temperature. This reversible order/disorder phase transition in Cu3SbSe3 affects the transport properties, as evidenced by thermal conductivity measurements, which change from negative to positive slope at the transition temperature. This structural change in Cu3SbSe3 has implications for its potential use in thermoelectric generators.