Author Phil Pastras opens his biographical study of legendary pianist Jelly Roll Morton with an epigram from poet Dylan Thomas-"Oh make me a mask"-and with that signal, Dead Man Blues: Jelly Roll ...Morton Way Out West takes us on the road with trickster Ferdinand Joseph LaMenthe, a.k.a. Jelly Roll. Pastras appreciates the facility with which Morton, like many Mrican American jazz musicians, used performative masks to strate-gize resilient careers in a capricious music business. Pastras writes: "Morton was a man of many masks, especially at the beginning of his ca-reer: pool hustler, card shark, pimp, vaudevillian, pianist, composer and bandleader. He did not focus exclusively on the music until after his five year stay on the West Coast, from 1917 to 1923" (6). Acknowledging the examples set by Ralph Ellison (1964) and Albert Murray (1976) in their essays on the ritual importance of donning masks in performance, Pastras sets out to find "what the mask tells us about its maker" (12). And the setting for this exploration-the American West-locates Jelly Roll as a rambler who reinvents himself and finds his defining identity on the American frontier.
Rubisco activase is a chloroplast stromal protein that catalyzes the activation of ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) in vivo. Activation must occur before rubisco can catalyze ...the photosynthetic assimilation of CO2. In leaves, photosynthesis and rubisco activation increase with increasing light intensity. Techniques are described that allow the activity of rubisco activase to be measured in extracts of spinach (Spinacea oleracea L.) leaf tissue. In this context, rubisco activase activity is defined as the ability to promote activation of the inactive-ribulose-1,5-bisphosphate-bound rubisco in an ATP-dependent reaction. Determination of rubisco activase activity in extracts of dark and light treated leaf tissue revealed that the activation state of rubisco activase was independent of light intensity
To investigate whether there is an increased prevalence of voice problems among telemarketers compared with the general population and if these voice problems affect productivity and are associated ...with the presence of known risk factors for voice problems.
Cross-sectional survey study.
One outbound telemarketing firm, 3 reservations firms, 1 messaging firm, 1 survey research firm, and 1 community college.
Random and cluster sampling identified 373 employees of the 6 firms; 304 employees completed the survey. A convenience sample of 187 community college students similar in age, sex, education level, and smoking prevalence served as a control group.
Demographic, vocational, personality, and biological risk factors for voice problems; symptoms of vocal attrition; and effects of symptoms on work.
Telemarketers were twice as likely to report 1 or more symptoms of vocal attrition compared with controls after adjusting for age, sex, and smoking status (P<.001). Of those surveyed, 31% reported that their work was affected by an average of 5.0 symptoms These respondents tended to be women (P<.001) and were more likely to smoke (P =.02); take drying medications (P<.001); have sinus problems (P =.04), frequent colds (P<.001), and dry mouth (P<.001); and be sedentary (P<.001).
Telemarketers have a higher prevalence of voice problems than the control group. These problems affect productivity and are associated with modifiable risk factors. Evaluation of occupational voice disorders must encompass all of the determinants of health status, and treatment must focus on modifiable risk factors, not just the reduction of occupational vocal load.
Elemental carbon and sulfate were measured in monthly precipitation samples at 12 rural sites inSweden from April to August, 1981. Wet deposition of excess sulfate was significantly correlatedwith ...elemental carbon deposition, and no systematic spatial or temporal variations in the ratio ofexcess sulfate to elemental carbon were observed. Comparision of these results with sulfur andelemental carbon emissions in Western Europe suggests that elemental carbon is removed at aslower rate than sulfur for the first day or so after emission.
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