83 research outputs found
Bostonia: 1993-1994, no. 2-3
Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs
Potential of a multiparametric optical sensor for determining in situ the maturity components of red and white vitis vinifera wine grapes
A non-destructive fluorescence-based technique for evaluating Vitis vinifera L. grape maturity using a portable sensor (Multiplex Ÿ) is presented. It provides indices of anthocyanins and chlorophyll in Cabernet Sauvignon, Merlot and Sangiovese red grapes and of flavonols and chlorophyll in Vermentino white grapes. The good exponential relationship between the anthocyanin index and the actual anthocyanin content determined by wet chemistry was used to estimate grape anthocyanins from in field sensor data during ripening. Marked differences were found in the kinetics and the amount of anthocyanins between cultivars and between seasons. A sensor-driven mapping of the anthocyanin content in the grapes, expressed as g/kg fresh weight, was performed on a 7-ha vineyard planted with Sangiovese. In the Vermentino, the flavonol index was favorably correlated to the actual content of berry skin flavonols determined by means of HPLC analysis of skin extracts. It was used to make a non-destructive estimate of the evolution in the flavonol concentration in grape berry samplings. The chlorophyll index was inversely correlated in linear manner to the total soluble solids (°Brix): it could, therefore, be used as a new index of technological maturity. The fluorescence sensor (Multiplex) possesses a high potential for representing an important innovative tool for controlling grape maturity in precision viticulture
Urban Health: Evidence, Challenges, and Directions
Urbanization is one of the most important demographic shifts worldwide
during the past century and represents a substantial change from how most of the
worldâs population has lived for the past several thousand years. The study of urban
health considers how characteristics of the urban environment may affect population
health. This paper reviews the empirical research assessing urban livingâs impact on
population health and our rationale for considering the study of urban health as a distinct
field of inquiry. The key factors affecting health in cities can be considered within
three broad themes: the physical environment, the social environment, and access to
health and social services. The methodologic and conceptual challenges facing the
study of urban health, arising both from the limitations of the research to date and from
the complexities inherent in assessing the relations among complex urban systems,
disease causation, and health are discussed.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/40323/2/Galea_Urban Health - Evidence, Challenges, and Directions_2005.pd
Determinants of premature mortality in a city population: An eight-year observational study concerning subjects aged 18â64
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Contained rocket motor burn demonstrations in X-tunnel: Final report for the DoD/DOE Joint Demilitarization Technology Program
Three low-pressure rocket motor propellant burn tests were performed in a large, sealed test chamber located at the X-tunnel complex on the Department of Energy's Nevada Test Site in the period May--June 1997. NIKE rocket motors containing double base propellant were used in two tests (two and four motors, respectively), and the third test used two improved HAWK rocket motors containing composite propellant. The preliminary containment safety calculations, the crack and burn procedures used in each test, and the results of various measurements made during and after each test are all summarized and collected in this document
Modelâbased county level crop estimates incorporating auxiliary sources of information
Using social network analysis to identify the most central services in an emergency department
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