نتایج جستجو برای: dust storms
تعداد نتایج: 49333 فیلتر نتایج به سال:
BACKGROUND Since the 1991 Gulf War concerns have been raised about the effects on veterans' health of exposures to Kuwaiti oil fire smoke and to dust storms. METHODS A cross sectional study compared 1456 Australian Gulf War veterans with a randomly sampled military comparison group (n = 1588). A postal questionnaire asked about respiratory conditions, exposures, medications, tobacco use, demo...
Background: Since the 1991 Gulf War concerns have been raised about the effects on veterans’ health of exposures to Kuwaiti oil fire smoke and to dust storms. Methods: A cross sectional study compared 1456 Australian Gulf War veterans with a randomly sampled military comparison group (n = 1588). A postal questionnaire asked about respiratory conditions, exposures, medications, tobacco use, demo...
Introduction: increasing dusty storms has been one of the most important consequences of climate change in recent years that directly or indirectly affected human society. Countries located in the arid and semiarid regions of the world, including Iran, have been affected more than other parts of the globe by this natural disaster and its harmful consequences, especially the atmospheric dust, wh...
One of the major problems in recent years is the more dust storms occurrence in west regions of Iran in order to rising of the temperature and drought in the neighbored country (Iraq). In present investigation, effect of simulated dust storm on chlorophyll a fluorescence, chlorophyll content and phenol compounds surveyed in vitro in medicinal plan Thymus vulgaris. T. vulgaris is the aromatic me...
In this study, we investigated the spatiotemporal variations of border-crossing dust events (DEs), including floating, blowing dust, and storms between Mongolia (MG) Inner (IM), China using ground-based observations from 91 synoptic stations across Mongolian Plateau during 1977-2018. We defined intensity DEs (progressive recessive) depending on impact area (number affected by dust) dividing the...
The supply of soluble iron through atmospheric dust deposition limits the productivity of the Southern Ocean. In comparison to the Northern Hemisphere, the Southern Hemisphere exhibits low levels of dust activity. However, given their proximity to the Southern Ocean, dust emissions from continental sources in the Southern Hemisphere could have disproportionate impact on ocean productivity. Aust...
Two autonomous robotic profiling floats deployed in the subarctic North Pacific on 10 April 2001 provided direct records of carbon biomass variability from surface to 1000 meters below surface at daily and diurnal time scales. Eight months of real-time data documented the marine biological response to natural events, including hydrographic changes, multiple storms, and the April 2001 dust event...
Dust storms include particulate matter that is transported over land and sea with biota that could impact downwind ecosystems. In addition to the physico-chemical compositions, organismal diversities of dust from two storm events in southern Israel, December 2012 (Ev12) and January 2013 (Ev13), were determined by pyro-sequencing using primers universal to 16S and 18S rRNA genes and compared. Th...
Owing to recent climate changes, dust storms are increasingly common, particularly in the Middle East region. Dust accumulation and subsequent mud formation on solid surfaces in humid environments typically have adverse effects on surface properties such as optical transmittance, surface texture, and microhardness. This is usually because the mud, which contains alkaline and ionic species, adhe...
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