نتایج جستجو برای: uvi
تعداد نتایج: 145 فیلتر نتایج به سال:
OBJECTIVES To estimate the prevalence of sexually transmitted infections (STIs) among female sex workers (FSWs) in the Jiangsu Province, China and measure the association of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections with their potential correlates. DESIGN A cross-sectional study on a representative sample of FSWs in Yangzhou and Changzhou cities of Jiangsu was condu...
PURPOSE We examined sexual risk behaviors and unrecognized HIV infection among heterosexually active African-American and Hispanic women. METHODS Women not previously diagnosed with HIV infection were recruited in rural counties in North Carolina (African American) and Alabama (African American), and an urban county in southern Florida (Hispanic) using multiple methods. They completed a compu...
Chronic obstructive pulmonary disease patients, especially those with emphysema, show steep slopes of the alveolar plateau (S). This study tested the hypothesis that continued gas exchange between poorly and well-ventilated lung units by means of collateral ventilation would contribute to S in these patients. Nine young volunteers, nine older volunteers and 11 patients with macroscopic emphysem...
The ultraviolet imager (UVI) of the Polar spacecraft and an all-sky camera at Longyearbyen contemporaneously detected auroral vortex structure (so-called "auroral spiral") on 10 January 1997. From space, spiral was observed as a "small spot" (one azimuthally-aligned chain similar spots) in poleward region main oval from 18 h to 24 magnetic local time. These spots were formed while substorm-asso...
Abstract. This study introduces an Earth observation (EO)-based system which is capable of operationally estimating and continuously monitoring the ultraviolet index (UVI) in Europe. UVIOS (i.e., UV-Index Operating System) exploits a synergy radiative transfer models with high-performance computing EO data from satellites (Meteosat Second Generation Meteorological Operational Satellite-B) retri...
This paper presents occupational skin exposure to solar ultraviolet radiation (UVR) of 122 Polish outdoor workers in spring and summer. In 65% of the cases, it was significant and exceeded 10 standard erythema doses (SED) during a work shift. The results provided grounds for (a) modifying hazard assessment based on the skin exposure factor proposed by the International Commission on Non-Ionizin...
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