Arsenic complexes in the arsenic hyperaccumulator
Arsenic complexes in the arsenic hyperaccumulator
... vittata, and As III is predominate species in its leaflets [8,20]. The lack of evidence for As complexes in the plant is probably due to the instability of these complexes and/or improperly selected ... to Mi- ami where they were grown in 30cm pots containing peat moss (Lamber, Canada), in a greenhouse environment. High levels of thiols were induced in the plants by treat...
Ngày tải lên: 15/03/2014, 23:48
Arsenic transformations in the soil rhizosphere plant system fundamental and potential application to ph
... conceptual model of the fate of As in the soilÁ /rhizosphereÁ/plant system by integrating the state-of -the art knowledge available in the contributing disciplines. Using this model and recent studies on ... disaster in southern Spain (Pain et al., 1998). Drinking of As-contaminated groundwater is perhaps the most common exposure pathway of humans to As toxicity. The bigges...
Ngày tải lên: 15/03/2014, 23:49
Arsenic pollution in groundwater in the red river delta
... Lu Ho a Lu Ho a Lu Ho a Lu TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ninh Binh TX . Ta m Diep TX . Ta m Diep TX ... Nam Dinh TP . Nam Dinh TP . Nam Dinh TP . Nam Dinh TP . Nam Dinh TP . Nam Dinh TP . Nam Dinh TP . Nam Dinh TP . Nam Dinh Tr u c Ninh Tr u c Ninh Tr u c Ninh Tr u c Ninh Tr u c Ninh Tr u c Ninh Tr...
Ngày tải lên: 15/03/2014, 23:49
Effects of compost and phosphate amendments on arsenic mobility in soils and arsenic uptake by the hyper
... CCA soil in the absence of the fern, but decreased in the presence of the fern. For the ASC soil, both treatments reduced As leaching regardless of the presence of the fern. The results indicate ... that growing Chinese brake fern in conjunction with phosphate amendments increases the effectiveness of remediating As-contaminated soils, by increasing As uptake and decrea...
Ngày tải lên: 16/03/2014, 00:07
arsenic contamination in soils, water and plants
... of these results, It reasonably indicates that there naturally exists the arsenic contaminated throughout the area not only within watershed in which the gold mine situated but also in the ... in order to quantify the leveling of arsenic contaminant. Five sampling locations are within the interesting sub-catchment area whose boundary covers gold mine and affected vill...
Ngày tải lên: 25/04/2013, 08:21
ARSENIC POLLUTION IN SOIL AND GROUNDWATER OF BANGLADESH
... findout the exact and possible sources of arsenic in the groundwater in the arsenic affected areas of the whole country. e) It is also very important to know the mechanism of arsenic contamination ... examining the source materials of the Ganges fluvial system. Possible linkage of arsenic to other elements in the sediments have been described. Core samples mai...
Ngày tải lên: 05/09/2013, 08:40
Tài liệu Báo cáo khoa học: Coordination chemistry of iron(III)±porphyrin±antibody complexes In¯uence on the peroxidase activity of the axial coordination of an imidazole on the iron atom ppt
... of the porphyrin a nd, in the more favorable conformation, H 2 O 2 binds to the iron on the same face of the porphyrin as the catalytic COOH residue, the imidazole binding to the iron on the ... the iron was thus more easy in the hydrophobic binding pocket of the antibody than the binding of the second one, most probably because of the steric hindrance brough...
Ngày tải lên: 21/02/2014, 03:20
Báo cáo khoa học: Analysis of Lsm1p and Lsm8p domains in the cellular localization of Lsm complexes in budding yeast ppt
... the latter, indicating that in the absence of an N-terminal domain distinct localization is lacking. Finally, the Lsm1p Sm domain by itself (LsmDN1DCp) accumu- lates in both the nucleus and the ... localization. The N-terminus has the biggest effect on localization; the C-terminus plays a secondary role, determining the preferred local- ization in the absence of the...
Ngày tải lên: 07/03/2014, 02:20
Báo cáo khoa học: A single mismatch in the DNA induces enhanced aggregation of MutS Hydrodynamic analyses of the protein-DNA complexes pot
... suppress the same by the squelching action of DNA following protein binding. However, interest- ingly, the protein regains a unique mode of aggrega- tion even when bound to DNA following an enhancement ... 4A). The marginal increase in the R h value of protein–DNA complexes in the presence of MutL at 1 mm ATP was qualitatively sim- ilar to that of minus MutL set (Fig. 3A)....
Ngày tải lên: 07/03/2014, 12:20
Arsenic fractionation in soils using an improved sequential extraction procedure
... remove As in the solution entrapped in the remaining soil after centrifugation; 10 ml deionized water were added to the remaining soil. After 2 min shaking, the solution was separated and further ... time of 4 h, the wash step extracts 6.1 ± 1.5% of the As obtained in the main extraction step. For NH 4 H 2 PO 4 , the wash step accounts only for <2% of the As ex- tra...
Ngày tải lên: 15/03/2014, 23:48