And Brassica Parachinensis Pb absorption in Zhujiang River Delta is mainly influenced EXC-Pb and FeMnO_x-Pb, the bioavailability of Pb can be evulated by the equation as follow: y = -0.01119+0.00413X_1+0.00047X_2, And X_1 is CA—Pb、 X_2 is FeMnO_x—Pb.
Through field sampling analysis, it further showed that the KH2PO4 extracted Se could reflect the Se supply state of soil to plants, the 0.1mol/L KH2PO4 solution was recommended as an extracting solution of Se of bioavailability in acid soil.
2 The relation of Cd 、 Pb fractions and bioavailability in soilBrassica Parachinensis Cd absorption in Zhujiang River Delta is mainly influenced CA-Cd and FeMnO_x-Cd, the bioavailability of Cd can be evulated by the equation as follow: y = -0.007+1.271X_1+0.589 X_2, And X_1 is EXC-Cd、 X_2 is FeMnO_x-Cd;
The results of a pot experiment and seeding experimnt and soil analysis show that the bio-availabiliy of soil inorganic phosphorus fractions is obvious difference. The order of bio-availability is Ca 2-P>Al-P>Fe-P、Ca 8-P>O-P、Ca 1 0-P,but in different soils'conditions it has a little difference.
In soil A,when applying 10 mg·kg -1 Zn of Zn-LS,the biomass of corn increased by 16.3%,and its Zn content was 81.2% higher. Therefore,biological availability of Zn-LS was better than that of inorganic Zn fertilizer.
The results showed that selenium content in tea leaves was significantly increased by applying sodium selenite to soil at 0 5 and 1 0 kg/hm 2.The highest selenium content of tea was 0 362 μg/g. The biological availability of selenium applied to soil was increased significantly with the special fertilizer for Se enriched tea containing Se 0 5 kg/hm 2 compared with that by sodium selenite.
During 2003-2005,sampling soil of tobacco from Chongqing ,for inverstigate into the shape, content distributing and absorb-desorption of boric ,adoping pot experiment to study the biological effectiveness .
After the inoculated accumulation ,the quantity of water soluble and exchangeable forms is decreased substantially and the one of bound and residue forms is increased. The biological effectiveness of heavy metals is also decreased sometimes. The measurement of biological and chemical methods indicates that the biotoxicity of treated sludge in the bottom is obviously decreased.
A preliminary evaluation of eco-environmental effects has been made on the basis of the biochemical behavior, distribution pattern and biological effectiveness of elemental selenium and by referring to the criteria for selenium eco-environmental evaluation in China and abroad.
This indicated that the accumulation pathways of Cu and the processes affecting the bioavailability of Cu to the mussel are different from those for Cd, Pb, and Zn.
Such flooding reaching an amplitude of about ten meters causes dramatic changes in the bioavailability of nutrients and oxygen levels and poses extreme constraints for plant survival and reproductivity.
We evaluated the chemical activity and bioavailability of heavy metals in the tidal flat based on the molar ratio of simultaneously extracted metals (SEM) and AVS.
This reduces the molecular weight and increases the bioavailability, indicating better ADME properties.
In this paper, progresses in researches on physiology of Zn deficiency in animals, phytate effect on bioavailability of Zn, and role of phytase in healing Zn deficiency of animals were reviewed.
A new approach was proposed to fractionating soil lead species differing in mobility and biological availability.
The index of biological availability of 137C in the soil is proposed, and its linear dependence on the coefficients of 137Cs transfer to wood is demonstrated.
A close negative correlation between the biological availability of 90Sr and 137Cs for agricultural crops and the content of exchangeable calcium in soils has been revealed in a field experiment performed for soddy-podzolic loamy sandy soil.
The question arises whether the absorption of minocycline is less reliable than previously thought or whether the film-coated tablets of minocycline used in this study may have lower biological availability than the capsules used in previous studies.
Pharmacokinetics and biological availability of erythromycin
The influence of linear energy transfer (LET) on relative biological effectiveness (RBE) and the liquid-holding recovery (LHR) ability was studied for a temperature conditional mutant of diploid yeast.
Conclusion: This study confirms the feasibility and micro-biological effectiveness of selective bowel decontamination in the context of surgical therapy which is associated with a high nosocomial infection rate.
The biological effectiveness of wood modified with linear chain carboxylic acid anhydrides against Coniophora puteana
Investigations were performed in order to test the biological effectiveness of 5,6-trans-25-hydroxycholecalciferol in patients suffering from terminal renal failure.
Pyrethrum (Tanacetum cinerariifolium (Trevir.) Schultz-Bip.) produces environmentally benign pesticides, the pyrethrins, and tansy (Tanacetum vulgare L.) lower terpenes of variable biological effectiveness.