Satellite transitions acquired in real time by magic angle spinning (STARTMAS): "ultrafast" high-resolution MAS NMR spectroscopy of spin I=3/2 nuclei.

The satellite transitions acquired in real time by magic angle spinning (STARTMAS) NMR experiment combines a train of pulses with sample rotation at the magic angle to refocus the first- and second-order quadrupolar broadening of spin I=3/2 nuclei in a series of echoes, while allowing the isotropic chemical and quadrupolar shifts to evolve. The result is real-time isotropic NMR spectra at high spinning rates using conventional MAS equipment. In this paper we describe in detail how STARTMAS data can be acquired and processed with ease on commercial equipment.

Use of SPAM and FAM pulses in high-resolution MAS NMR spectroscopy of quadrupolar nuclei.

The merits of SPAM and FAM pulses for enhancing the conversion of triple- to single-quantum coherences in the two-dimensional MQMAS experiment are compared using (87)Rb (spin I=3/2) and (27)Al (I=5/2) NMR of crystalline and amorphous materials. Although SPAM pulses are more easily optimized, our experiments and simulations suggest that FAM pulses yield greater signal intensity in all cases. In conclusion, we argue that, as originally suggested, SPAM and FAM pulses are best implemented in phase-modulated whole-echo MQMAS experiments and that the use of SPAM pulses to record separate echo and antiecho data sets, which are then combined, generally yields lower signal-to-noise ratios.

Balancing empiricism and local cultural knowledge in the design of prevention research.

Prevention research aims to address health and social problems via systematic strategies for affecting and documenting change. To produce meaningful and lasting results at the level of the community, prevention research frequently requires investigators to reevaluate the boundaries that have traditionally separated them from the subjects of their investigations. New tools and techniques are required to facilitate collaboration between researchers and communities while maintaining scientific rigor.

Tribal participatory research: mechanisms of a collaborative model.

Although much social science research has been conducted within American Indian and Alaska Native (AIAN) communities, relatively little research has been conducted by or for those communities. We describe an approach that facilitates the active involvement of AIAN communities in the research process, from conceptualizing the issues to be investigated to developing a research design, and from collecting, analyzing, and interpreting the data to disseminating the results. The Tribal Participatory Research (TPR) approach is consistent with recent developments in psychology that emphasize the inclusion of community members and the social construction of knowledge.

The Indian Family Wellness project: an application of the tribal participatory research model.

This paper describes a family-centered prevention intervention for preschool-aged children-the Indian Family Wellness (IFW) project. The development, implementation, and evaluation of IFW has been based upon a tribal participatory research model, an approach that emphasizes full participation of tribes and tribal members in all phases of the research process and incorporates cultural and historical factors vital to strengthening American Indian and Alaska Native families. We present four mechanisms of tribal participatory research, describe how they have been applied in the IFW project, and consider the implications of this work for the field of family-centered prevention research.