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In solutions, mass concentration is commonly encountered as the ratio of mass/ [volume solution], or m/v. In water solutions containing relatively small quantities of dissolved solute (as in biology), such figures may be "percentivized" by multiplying by 100 a ratio of grams solute per mL solution. The result is given as "mass/volume percentage".
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Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs.To be taken up by a plant, a nutrient element must be located near the root surface; however, the supply of nutrients in contact with the root is rapidly depleted within a distance of ca. 2 mm. [14] There are three basic mechanisms whereby nutrient ions dissolved in the soil solution are brought ...
For example, Poliovirus is resistant to a solution of 3% H 2 O 2 even after a contact time of 10 minutes, [59] however 7.5% H 2 O 2 takes 30 minutes to inactivate over 99.9% of Poliovirus. [7] Generally, hydrogen peroxide is considered as a potent virucide in appropriate concentrations, specifically in other forms such as gaseous .
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The LD 50 after parenteral administration was lower than 1 μg/kg. [32] However the doubtful purity of this study increased because of uncertainty concerning the toxicological data. In 1974, the structure of palytoxin was not completely elucidated and the molecular weight was a lot higher (3300 Da instead of 2681 Da).
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