نتایج جستجو برای: threshold temperature
تعداد نتایج: 568339 فیلتر نتایج به سال:
biological characteristics and population growth parameters of diaeretiella rapae (hym.: braconidae) on russian wheat aphid, diuraphis noxia (hem.: aphididae) were investigated at five constant temperatures (10, 15, 20, 25 and 27.5 ?c), 60±5% rh and a photoperiodicity of 16:8 h (light:dark). developmental period of immature stages of d. rapae was the lowest at 25 ?c (11.23±0.144 days) and highe...
BACKGROUND The relationship between temperature and myocardial infarction has not been fully explained. In this study, we identified the threshold temperature and examined the relationship between temperature and emergency admissions due to MI in Korea. METHODS Poisson generalized additive model analyses were used to assess the short-term effects of temperature (mean, maximum, minimum, diurna...
The thermal stability of dielectric liquid lenses is studied by measuring the focal length at different temperatures. Two types of liquids lenses are investigated: Type-I (SL-5267/glycerol) and Type-II (glycerol/ BK7 matching liquid). A threshold-like behavior is found. Below the threshold temperature, the focal length is temperature insensitive. Above the threshold, the focal length changes ex...
Climate risks are the inherent features of Earth's climate. The occurence of heat wave is one of these natural phenomena. Heat waves, one of the basic appearances of climate change, are very important because of frequency and damage of life and property, (Haddow et al, 2008). Frequency of heat wave occurence in recent years, is one of the aspects of climatic changes and extreme weather (Matthie...
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