نتایج جستجو برای: fireworks
تعداد نتایج: 533 فیلتر نتایج به سال:
Introduction On New Year's Eve and Year, fireworks, alcohol consumption noise exposure lead to numerous emergency consultations that largely affect ear, nose throat medicine. These mainly include inner ear damage bone fractures.
Abstract. Fireworks degrade air quality, reduce visibility, alter atmospheric chemistry, and cause short-term adverse health effects. However, there have not been any comprehensive physicochemical optical measurements of fireworks their associated impacts in a Southeast Asia megacity, where are regular part the culture. Size-resolved particulate matter (PM) were made before, during, after New Y...
W hat is the information content of a molecule? What is the data transmission rate associated with a chemical reaction? In contemplating such questions, Thomas et al. in this issue of PNAS (1) arrive at an interesting prototype device that stores and retrieves information by using only chemistry and chemical processes. This combination of information technology and chemistry, in a new field tha...
BACKGROUND Fireworks are commonly used in local and national celebrations. The aim of this study is to explore the extent, nature and hospital costs of injuries related to the Persian Wednesday Eve festival in Iran. METHODS Data for injuries caused by fireworks during the 2009 Persian Wednesday Eve festival were collected from the national Ministry of Health database. Injuries were divided in...
Ammonium and potassium perchlorate are strong oxidants widely employed in the pyrotechnic compositions in fireworks. Although its reduction is thermodynamically highly favorable, the perchlorate anion’s reactivity is kinetically inhibited, primarily attributable to steric hindrance of access to the central chlorine atom within the tetrahedral ClO4 structure. This relative inactivity has histori...
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