Crop uptake and extractability of cadmium in soils naturally high in metals at different ph levels

Ngày tải lên: 15/03/2014, 23:22

... application to agricultural land, incineration, land reclamation, landfill, forestry and application to ‘dedicated’ land (Matthews, 1992). Dumping at sea has been prohibited in many countries including ... data are discussed in relation to potential plant uptake of metals and environmental risk associated with increased levels of mobile heavy metals in soils. 2. Mater...

Ngày tải lên: 15/03/2014, 23:22

... extractability of cadmium in soils naturally high in metals at different pH levels. Commun. Soil Sci. Plant Anal. 26, 2123– 2142. Soon Y K 1981 Solubility and sorption of cadmium in soils amended ... equivalents and phosphate content. At low levels of Cd addition, the solubility of Cd was controlled by adsorption that was enhanced by increasing pH...

Ngày tải lên: 16/03/2014, 00:25

... accumulation in a variety of macrophage types, including the murine macrophage cell line J774 [17], mouse peritoneal macro- phages [18], primary human monocyte-derived macrophages [3,4] and macrophages ... than palmitate in macrophages and that  7.5 times more oleate than palmitate is transferred from these cells to lymphocytes in coculture, indicating that macrophage metabolism...

Ngày tải lên: 16/03/2014, 12:20

... of NO 3 -N The soil pretreated with chloramphenicol or cycloheximide and intact soil( 3g as dry wt) was incubated at 30℃ with 3ml of 0.1mole phosphate buffer (pH= 5.0) containing 1mgN of nitrate ... described above, 3ml of 0.1M phosphate buffer (in situ pH of each sample), containing potassium nitrate or sodium nitrite and sodium fumarate at various concentrations, and...

Ngày tải lên: 05/09/2013, 08:40

... obvious in the groundwater of these areas (Kumamoto City Water Works, 2006). The drinking water standard and ground water quality standard of nitrate nitrogen (NO 3 -N) in Japan were both determined ... (1983). Hydrochemical investigation of ground water in the Kumamoto plain. Ind. Water, 296, 27-43. Nas B. and Berktay A. (2006). Groundwater contamination by nitrates in t...

Ngày tải lên: 05/09/2013, 09:38

... understanding MSM socio-demographic characteristics, sexual health related attitudes and practices. It is envisaged that this information may encourage research and programmatic interest in efforts ... characteristics and sexual health related attitudes and practices of men having sex with men in central and southern Malawi P.R.T. NTATA 1 , A.S. MUULA 2* and S. SIZIYA 3...

Ngày tải lên: 14/02/2014, 21:20

... following 5 min of incubation at 37 °C of the enzyme with all other components. Following 10 min of incubation at 37 °C, the reaction was quenched by the addition of 0.2 mL of a solution containing 11 ... and incubated at 37 °C for 3 min. The reaction was initiated by the addition of 1 mm homocysteine, and then further incubated at 37 ° C for 10 min. The reaction was q...

Ngày tải lên: 18/02/2014, 08:20

... were treated with sodium chlorate to completely inhibit sulfatation of proteoglycans and, in consequence, abolish bFGF binding to HSPG. Our previous studies indicated that in immature rat Sertoli cells, ... their heparan sulfate chains [34]. Sodium chlorate is an inhibitor of ATP sulfurylase and hence of the production of phosphoadenosine phospho- sulfate (PAPS), the active s u...

Ngày tải lên: 21/02/2014, 03:20

... the amount of nandinine produced was estimated by using a calibration curve of (S)-scoulerine (pmol versus peak area) at 285 nm. To determine the kinetic parameters of CYP719A3, the amount of nandinine ... [7]. Analysis of substrate specificity showed that CYP719A2 and CYP719A3 catalyzed methylenedioxy bridge-formation only in ring A of their substrates, e.g. the conversion...

Ngày tải lên: 07/03/2014, 10:20