Past studies of the reactions between anhydrous NH3 and anhydrous SO2 have suggested that two distinct products are formed. These products are stable below about 10C, are pale yellow or white solids, and have NH3:SO2 stoichiometric ratios of 1:1 and 2:1, respectively. The present work corroborates these results and presents quantitative measurements of the equilibrium total vapor pressure over the products at temperatures between −10 and −70C. Infrared spectra of the vapor infer that the products dissociate reversibly on sublimation into their components, NH3 and SO2. One white product was formed which exerted an extremely low vapor pressure at low temperatures. Regions of temperature minima would be preferred for its formation in the atmosphere. This stable product may appear at some stage in the formation of the ammonium sulfate layer in the lower stratosphere.
emphasizes the unity of teaching and research, with a focus on a particular type of research and its potential for both the researcher and the student as a researcher. These two approaches raise issues relating to the differentiation between institutions of higher education. the aim of higher education at the university. the organization of higher education in terms of the curriculum and teaching. and institutional policies and financing. (56 ref)-Ccntreji,r Edurcitionrrl Polic:v n r d Innovcirion, Cirtholic Univcwity ofleuven, Belgium.The ccholarship of teaching and learning is tailor made for two-year colleges. But the widespread adoption of the scholarship of teaching and learning Faces the obstacles of negative attitudes toward scholarship and research on the part of two-year college faculty and their tendency toward "pedagogical solitude." In response to these obstacles, two solid reasons for two-year college faculty to engage in the scholarship of teaching and learning should be emphasized. First is that the scholarship of teaching and learning represents an authentic way of measuring and assessing the range of student accomplishment. The second reason is to raise the intellectual profile of two-year college faculty within higher education and among the public at large. ( 12 ref)--Profi.s.sor of English, Bristol Community College.
0665-4YGMT
Community‐based learning is now more than a variation on community service. It is now a powerful pedagogy that can be used to enhance the common good. This pedagogy has proven itself to be an educational resource whose time has come.
Urban American Indians/Alaska Natives (AI/ANs) are highly mobile, and little is known about ways to include them in research or clinical activities. We evaluated postal mailings as a means of reaching patients seen at an urban Indian health care facility (60% of whom were AI/AN) and identified factors associated with receipt of mail. As part of a clinical trial, a Native art calendar was sent via first class mail to 5,633 clients seen at the urban Indian clinic during the prior two years. A multi-step address verification process was conducted, including telephone contacts, Web searches, and in-person visits. Logistic regressions examined the association of client characteristics with accurate addresses. Based on initial mailings and in-person location efforts, we estimated that only 61% of clients actually received the calendars. The multi-step address verification process was significantly less likely to identify working addresses for clients who were AI/AN and clients who were seen more than 3 months before the study. Reaching urban AI/ANs for research activities and health care is difficult. Innovative strategies are needed to locate this highly mobile and understudied population.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.