نتایج جستجو برای: concentration of dissolved substances
تعداد نتایج: 21178827 فیلتر نتایج به سال:
Continuous-flow bioassays were employed to determine the relationship between dissolved oxygen and cadmium upon five species of aquatic insects, as measured by survival and the amount of cadmium found within the insect. Results indicate the toxicity of cadmium increases as the dissolved oxygen concentration increases. This may be explained by an observed increase in the amount of cadmium found ...
in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...
Background & Aims : Right branch of Sarugh River is the main river in Takab city, north western Iran, which is located at downstream of present gold extraction plants. Cyanide leak aging from tailings dams of plants is a serious threat to the health of river. This study was conducted to evaluate Cyanide concentration and transferring cyanide to the river. Materials & Methods : In this cross...
subsequent accretion of layers of the complexes might represent a combination of chemical and physical proSince twice as much C is sequestered in soils as is contained in the tection from enzymes. atmosphere, the factors controlling the decomposition rate of soil C are important to the assessment of the effects of climatic change. Humic substances are operationally defined, but have The formati...
The influence of dissolved natural organic matter (NOM) source on copper toxicity was investigated with larval fathead minnows (Pimephales promelas) in reconstituted moderately hard water. Ninety-six-hour static renewal toxicity tests were conducted to investigate an assumption of the biotic ligand model (BLM) that NOM source does not need to be considered to adequately predict copper toxicity....
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