11 research outputs found
Fermionic partner of Quintessence field as candidate for dark matter
Quintessence is a possible candidate for dark energy. In this paper we study
the phenomenologies of the fermionic partner of Quintessence, the Quintessino.
Our results show that, for suitable choices of the model parameters, the
Quintessino is a good candidate for cold or warm dark matter. In our scenario,
dark energy and dark matter of the Universe are connected in one chiral
superfield.Comment: 4 pages, 3 figures, version to appear in PR
Naturalness and Focus Points with Non-Universal Gaugino Masses
Relations between the gaugino masses have been shown to alleviate the degree
of fine-tuning in the MSSM. In this paper we consider specific models of
supersymmetry breaking with gravity mediation and demonstrate that within both
GUT and string constructions it is possible to generate these relations in a
natural way. We have numerically studied the degree of fine-tuning in these
models, including one-loop corrections, and have found regions of parameter
space that can satisfy all known collider constraints with fine-tunings less
than 20%. We discuss some of the phenomenological features of these models
within the regions of reduced fine-tuning.Comment: 31 pages, 21 figures. Version accepted for publication in Nuclear
Physics
Physical activity associated with urban environmental characteristics: A correlational study of active women of high socioeconomic status from Brazilian cities of Santa Catarina
Psychologische interventies bij chronische somatische ziekten Slotbeschouwing en toekomstige ontwikkelingen
Drinking water turbidity and gastrointestinal illness in the elderly of Philadelphia
STUDY OBJECTIVEâTo investigate the association between drinking water quality and gastrointestinal illness in the elderly of Philadelphia.âšDESIGNâWithin the general population, children and the elderly are at highest risk for gastrointestinal disease. This study investigates the potential association between daily fluctuations in drinking water turbidity and subsequent hospital admissions for gastrointestinal illness of elderly persons, controlling for time trends, seasonal patterns, and temperature using Poisson regression analysis.âšSETTING AND PARTICIPANTSâAll residents of Philadelphia aged 65 and older in 1992-1993 were studied through their MEDICARE records.âšMAIN RESULTSâFor Philadelphia's population aged 65 and older, we found water quality 9 to 11 days before the visit was associated with hospital admissions for gastrointestinal illness, with an interquartile range increase in turbidity being associated with a 9% increase (95% CI 5.3%, 12.7%). In the Belmont service area, there was also an association evident at a lag of 4 to 6 days (9.1% increase, 95% CI 5.2, 13.3). Both associations were stronger in those over 75 than in the population aged 65-74. This association occurred in a filtered water supply in compliance with US standards.âšCONCLUSIONSâElderly residents of Philadelphia remain at risk of waterborne gastrointestinal illness under current water treatment practices. Hospitalisations represent a very small percentage of total morbidity.âšâšâšKeywords: waterborne disease; drinking water; gastrointestinal illness; elderl