We present the results of an 850 μm JCMT/SCUBA survey for dust around 13 nearby solar mass stars. The dust mass sensitivity ranged from 5 × 10 to 0.16 M⊕. Three sources were detected in the survey, one of which (HD 107146) has been previously reported. One of the other two submillimeter sources, HD 104860, was not detected by IRAS and is surrounded by a cold, massive dust disk with a dust tempe...

in this study, a number of 95 synoptic stations of the country were extracted in a statistical period (1990-2007) in order to identify fog-prone areas and dust storms with vision less than one kilometer along with the dust. then, frequency map of the event, with vision less than one kilometer was provided by spline method in roads network in arc gis environment. also, air cloudy percentage map ...

Changes in ventilatory capacity during the work shift were studied in workers exposed to tea dust in tea-packing plants, wood dust in two furniture factories, and virtually no dust in an inoperational power station. The FEV1 and FVC in workers exposed to dust were found to decline during the work shift by a small but significant volume. The MMFR, Vmax 50% and Vmax 75% were to variable to displa...

shift changes and heterogeneity analyses of hydro-climatic variables is very important in water resources planning and management. in order to shift changes and heterogeneity analyses of tmin and tmax, precipitation and discharge, 2, 7 and 7 stations was used over the 40 years (1972-2011), respectively. the results of annual tmin and tmax series showed that both of two stations had the signific...

House dust mite allergy is present in up to 90% of Asian atopic patients, with increasing incidence and prevalence of sensitization and clinical allergy from childhood through to adulthood. This far exceeds the reported prevalence of 50%–70% in Western populations [1]. House dust mite allergy is particularly common in the tropical areas of Southeast Asia due to the warm, humid climate [2]. In c...

An Integrated Extreme Climatic Index (IECI) is defined for analyzing the overall trend of change in the frequencies of major extreme climatic events over mainland China. The index is composed of 7 individual extreme indicators, i.e. the country-averaged frequencies of high temperature, low temperature, intense precipitation, dust storm and strong wind events, meteorological drought area percent...

[1] Climate forcing by mineral dust aerosols is one of the most uncertain processes in our current understanding of climate change. The main natural sources of dust aerosols are blowing dust, dust devils, and dust storms. Electric fields larger than 100 kV/m have been measured in these phenomena. Theoretical calculations and laboratory experiments show that these electric fields produce electri...