نتایج جستجو برای: dose response curve
تعداد نتایج: 1334941 فیلتر نتایج به سال:
Tukey’s Trend Test is a simple step-down test for identifying the “No Statistical Significance of Trend” (NOSTASOT) dose [Tukey, Ciminera, and Heyse (1985)]. Obtaining exact power of the experiment and sample size requirements is not always feasible or possible when dealing with this type or other related procedures for handling multiple comparisons. Computer simulations provide a viable altern...
In this work, lithium fluoride doped with impurities of Sr and Ce, was produced using melting method and its thermoluminescence (TL) properties was investigated. The optimized values of 0.5 mol% of Sr and 0.1 mol% of Ce were obtained for the most TL sensitivity. Reusability of the prepared samples has been investigated for 5 cycles of annealing, irradiation and reading and no considerable chang...
Background and Purpose: NO is a short-lived gas molecule generated by degradation of L-arg to citrulline and by the activation of enzyme NOS Ca2+/calmodulin-dependent. There are multiple NOS isoforms that strongly are expressed in skeletal muscle, suggesting the crucial role of NO in regulating muscular metabolism and function. In this study, the effect of L-arginine was examined at the neuromu...
Background and aims: Exposure to the normal hexane can induce dysfunction of the nervous system and color vision impairment. Occupational risk assessment is established according to no observed adverse effect levels (NOAEL). Recently, because of the NOAEL’s limitations, the benchmark responses were applied for risk assessment. The study’s aim is an analysis of benchmark response in occupational...
the acute ecotoxicity of a set of mixture samples (washing powders, wastes, fuel extracts etc.) was assessed using four acute ecotoxicity assays with aquatic organisms (daphnia magna, poecilia reticulata, artemia salina and desmodesmus subspicatus). the experimental concentration-response curves were fitted by seven two-parameter sigmoid equations using non-linear regression. the regression pe...
the acute ecotoxicity of a set of mixture samples (washing powders, wastes, fuel extracts etc.) was assessed using four acute ecotoxicity assays with aquatic organisms (daphnia magna, poecilia reticulata, artemia salina and desmodesmus subspicatus). the experimental concentration-response curves were fitted by seven two-parameter sigmoid equations using non-linear regression. the regression per...
BACKGROUND Use of short-acting β(2)-agonists in chronic obstructive pulmonary disease (COPD) during treatment with long-acting β(2)-agonists is recommended as needed, but its effectiveness is unclear. The purpose of this study was to assess the additional bronchodilating effect of increasing doses of salbutamol during acute and chronic treatment with formoterol in patients with COPD. METHODS ...
introduction: midazolam has turned into a common drug for pediatric procedural sedation and analgesia. however, there is not much data regarding its proper dose and potential side effects in the iranian children population. therefore, the present study was done to compare 2 doses of iv midazolam in this regard. methods: the present clinical trial was performed to compare 0.1 and 0.3 mg/kg dose...
methanolic extract of whole plant of amaranthus viridis l (meav), was screened for antinociceptive activity using acetic acid induced writhing test, hot plate test and tail immersion test in mice. in a similar way a screening exercise was carried out to determine the antipyretic potential of the extract using yeast induced pyrexia method in rats. administration of the extracts was applied to bo...
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