physiological biochemical and anatomical aspects
plant physiological ecology (lambers et al 2008)
Ngày tải lên :
03/04/2015, 15:00
... Canopy 3.2 Physiological, Biochemical, and Anatomical Differences Between Sun and Shade Leaves 3.2.1 The Light-Response Curve of Sun and Shade Leaves 3.2.2 Anatomy and Ultrastructure of Sun and Shade ... Plants 10.1 Introduction 10.2 Physiological, Biochemical, and Anatomical Aspects 10.3 Water-Use Efficiency 10.4 Incomplete and Facultative CAM Plants 10.5 Distribution and Habitat of CAM Species ... grow and reproduce (its fundamental niche, as determined by physiological amplitude) (Fig 2) Historical, physiological, and biotic filters are constantly changing and interacting Human and natural...
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arsenic contamination in soils, water and plants
Ngày tải lên :
25/04/2013, 08:21
... layers between clay, silty clay and sandy silty clay which are smaller grain sizes and higher cohesion than purely sandy soils Because of their small grain sizes and high cohesions, it causes leading ... kilometer from the mine and at the altitude of 276 meters from the mean sea level Most of lands were engaged in farming and cropping plants such as corns, tapiocas, soybean, and rubber trees Within ... porosity and permeability of soil, land use, and soil loss etc., may be needed to be determined These are important for analyzing the arsenic mobility, which would be beneficial for planning and management...
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Improvement of nutrient removal and phosphorus recovery in the anaerobic/oxic/anoxic process combined with sludge ozonation and phosphorus adsorption
Ngày tải lên :
05/09/2013, 09:38
... oxidant, and recirculation of the solubilized excess sludge, containing readily biodegradable carbon, in a biological treatment system (Chu et al., 2008; Cui and Jahng, 2004; Kamiya and Hirotsuji, ... with ozonation and phosphorus adsorption: A, previous study (Suzuki et al., 2006); B, this study - 136 - Journal of Water and Environment Technology, Vol 7, No 2, 2009 MATERIALS AND METHODS A ... Journal of Water and Environment Technology, Vol 7, No 2, 2009 MLSS was measured according to the Standard Methods (1995) To determine soluble TOC (S-TOC), NH4-N, NO2+3-N, NO2-N, and PO4-P, water...
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Tài liệu Báo cáo khoa học: Analyzing changes of chromatin-bound replication proteins occurring in response to and after release from a hypoxic block of replicon initiation in T24 cells pptx
Ngày tải lên :
21/02/2014, 00:20
... 4-(2-aminoethyl)bezenesulfonylfluoride/HCl (1 mM) and NaF (10 mM) and centrifuged for and 600 g at °C Nuclei were resuspended in extraction buffer three more times to fully lyse the nuclear envelope and complete extraction ... combined and yielded nucleosolic proteins The remaining pellet contains all DNA and structure bound proteins and is further referred to as chromatin-fraction Electrophoresis of proteins and Western ... Immunofluorescence staining of total cellular and chromatin-bound PCNA T24 were grown and incubated on coverslips Two sets of hypoxic cells and of cells reoxygenated for 10 and 30 were prepared One set of...
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Programme title: Soils and Environmental Pollution MSc doc
Ngày tải lên :
06/03/2014, 23:20
... regulatory and commercial aspects of contaminated land and land management and problem solving skills in relation to soil management and remediation Programme Outcomes Knowledge and Understanding ... environmental law and regulation in England and Wales Techniques and processes involved in site investigation and risk assessment 10 Strategies and objectives of remediation 11 Sources, processing and disposal ... methods and strategies Predict water and solute transport in soils using physical principles Recognise and explain the important chemical properties of soils Understand controls on mobility and availability...
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Báo cáo "The effect of Cu concentration in soil and phosphorous fertilizer on plant growth and Cu uptake by Brassia juncea L. grown on contaminated soils " doc
Ngày tải lên :
14/03/2014, 15:20
... soil and Cu accumulation in plant, and also the role of phosphate in reducing the uptake of Cu by Brassica juncea L 2.2 Sampling and chemical analysis Plant and soil samples were taken and analysed ... samples (leaves and shoots) are collected and washed with pure water and then dried at 70oC until stabilisation of weight The monitoring indicators for plants growth include plant height and biomass ... height and biomass Total Cu in soil and plant tissues, Cu2+ (HNO3 0.43N) in soil was determined by Atomic Absorption Spectroscopy (AAS) Materials and methods Results and discussion 2.1 Pot experiments...
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Adsorption of heavy metal inons on soils and soil constituents
Ngày tải lên :
15/03/2014, 23:09
... between planes and β and between β and d are plane condensers with capacitance G1 and G2 , respectively, the relation between charge and potential is given by: σ0 Ψ0 − Ψβ = (15) G1 and σ0 + σd σd ... Fe and Mn oxides exhibit amphoteric behavior and interact both with cations and with anions, and oxidation–reduction reactions involving Mn are influenced by a variety of physical, chemical, and ... H2 O (26) Adsorption via a ligand bridge is classified as “ligand-like” or “type B” and occurs preferably at low pH (Fig 6B) A va- H.B Bradl / Journal of Colloid and Interface Science 277 (2004)...
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Chemical speciation and extractability of zn, cu and cd in two contrasting biosolids amended clay soils
Ngày tải lên :
15/03/2014, 23:22
... properties of the soils and biosolids are shown in Table and concentrations of major nutrients and heavy metals are listed in Table The fresh sludge had a dry matter content of 24.5% and was air-dried ... EDTA–Cu (P < 0:05) and EDTA–Zn and Cd (both P < 0:001) Overall, the amounts of metals extracted by the three extractants followed the sequence EDTA > NH4 OAc > HOAc for Cu and Cd, and EDTA > HOAc ... components and properties vary greatly in different soils, and these can have a very important influence on the mobility and bioavailability Most of the differences in the sizes of the single extraction and...
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Competitive sorption of cadmium and lead in acid soils of central spain
Ngày tải lên :
15/03/2014, 23:22
... accounting for the 52% and 69% of the ECEC, respectively Soils S1 and S3 had the lowest ECEC, pHw and clay content while S2 and S4 were less acidic and showed higher ECEC and clay content Soil ... sorbed by the soil solids (Amol kgÀ 1), and m and b the slope and intercept, respectively Similar to Mesquita and Viera ´ e Silva (2002), Fontes and Gomes (2003) and Rodrıguez-Maroto et al (2003), ... exponents, and the standard error of the estimate are shown in Table The average value of the exponents found for S1, S2 and S3, were 0.03 F 0.015 (standard deviation) and 0.035 F 0.003 for Pb, and...
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Concentration and chemical speciations of cu, zn, pb and cr of urban soils in nanjing, china
Ngày tải lên :
15/03/2014, 23:22
... Cu and Cr The non-residual fractions of Cu, Zn, Pb and Cr in non-urban soils average 6.7%, 8.7%, 16.5% and 10.1%, respectively Therefore, Cu, Zn and Pb in urban soils have higher mobility and ... Pb and Cr concentrations and chemical speciation of urban soils in Nanjing, China Materials and methods 2.1 Description of study area Nanjing city is located in eastern China (31j14V 118j22V and ... 24 h, weighed and ground to pass a nylon sieve with 0.15-mm openings A 0.2-g subsample was used for determining Cu, Zn, Pb and Cr contents Total Cu, Zn, Pb and Cr contents in soils and residual...
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Controls of bioavailability and biodegradability of dissolved organic matter in soils
Ngày tải lên :
15/03/2014, 23:22
... Zsolnay and Steindl, 1991d; Qualls and Haines, 1992; Boissier and Fontvieille, 1993; Raymond and Bauer, 2001 inoculum + nutrients Zsolnay, 1996; Marschner and Bredow, 2002 Gilbert, 1988; Amon and ... al., 2000 Kalbitz et al., 2003 Jandl and Sletten, 1999; Jandl and Sollins, 1997; Moran et al., 2000 Merckx et al., 2001; Marschner and Noble, 2000; Marschner and Bredow, 2002 Boudot et al., 1989 ... (Vance and David, 1991; Qualls and Haines, 1992; Guggenberger and Zech, 1993; Guggenberger et al., 1994; Andersson and Nilsson, 2001; Kaiser et al., 2001b) In consequence, the hydrophilic and hydrophobic...
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Effects of compost and phosphate amendments on arsenic mobility in soils and arsenic uptake by the hyper
Ngày tải lên :
16/03/2014, 00:07
... of Fe–As and Ca–As, but increased water-soluble and exchangeable As (WE–As) and Al–As in the CCA soil For the ASC soil, however, treatments decreased Fig Soil pH (a and b) and DOC (c and d) in ... properties of soils, composts, and phosphate rock are provided in Table 2.2 Soil treatments Dried MSW and BS composts were sieved to a < 2mm diameter and were mixed with the CCA and ASC soils at a ratio ... contaminated soils; and (3) to identify possible mechanisms responsible for As mobility in soil after compost and phosphate treatments Materials and methods 2.1 Soil, compost and phosphate rock...
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Heavy metal contamination in soils of urban highways (comparision between runoff and soil concentration
Ngày tải lên :
16/03/2014, 00:25
... mainly in the strongly bound organic and residual phases Hewitt and Candy (1990), examined levels of Pb, Cd and Zn in soil and dust samples collected in and around the city of Cuenca, Ecuador ... cadmium and copper with measurements of lead Gibson and Farmer (1984) applied a six-step sequential leaching procedure to soil and street dirt in order to understand environmental mobility and bioavailability ... of Zn and Cu exceeded surface quality discharge standards for all rainfall events and that Pb had two and Cd had three excedences (Table I) They also investigated partitioning of metals and solids...
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Immobilization and phytoavailability of cadmium in variable charge soils effect of lime addition
Ngày tải lên :
16/03/2014, 00:25
... Bioavailability and Risks of Metals 2nd edn Springer, New York 866 p Andersson A and Siman G 1991 Levels of Cd and some other traceelements in soils and crops as influenced by lime and fertilizer ... Fortin M J and Cyr J 1998 Clover and cress as indicator species of impacts from limed sewage sludge and landfill wastewater land application Sci Total Environ 217, 231–239 Williams C H and David ... C A and Messer D 1996 Prediction of titratable acidity and soil sensitivity to pH change J Environ Qual 25, 1280–1284 Fernandes M L, Abreu M M, Calouro F and Vaz M C 1999 Effect of liming and...
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Báo cáo khoa học: Dual effect of echinomycin on hypoxia-inducible factor-1 activity under normoxic and hypoxic conditions docx
Ngày tải lên :
16/03/2014, 05:20
... activity and the b-galactosidase activity, as means ± 1SD (n ¼ 3) *, ** and ***, P < 0.05, 0.01 and 0.001 versus normoxia (*), (**) and (***), P < 0.05, 0.01 and 0.001 versus hypoxia [*] and [**], ... expressed as means ± 1SD (n ¼ 3) *, ** and ***, P < 0.05, 0.01 and 0.001 versus normoxia (*), (**) and (***), P < 0.05, 0.01 and 0.001 versus hypoxia 30%, and that of AP-1 by 50% (Fig 2A,B) Echinomycin ... inhibited both basal and PMA-stimulated c-myc transcriptional activity (Fig 2C) AP-1 activity was also low in unstimulated HepG2 cells PMA enhanced this activity and, under normoxic and hypoxic conditions,...
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chemical equilibria and kinetics in soils
Ngày tải lên :
01/04/2014, 10:28
... group and a bound species is termed a ligand"l The aqueous ions, MnCI+, HCO;, and AI(H20)~+, are complexes, with Mn2+, CO~-, and AP+, respectively, usually chosen as central groups and CI-, H" and ... reactants and products in their Standard States: CHEMICAL EQUILmRIUM AND KINETICS ~ r GO = -RT In K 17 (s1.14) where ~,G0 is the standard Gibbs energy change, R is the molar gas constant, and T is ... where ~rHo is the standard enthalpy change and ~rSo is the standard entropy change for the reaction to which K refers Strictly, both T and K in Eq 1.41 should be written TO and KO to denote the...
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Dự án nông nghiệp " Major Cropping Soils and Soil Constraints to Productivity of Major Upland Crops Grown by Smallholders - Southern Central Coast " pdf
Ngày tải lên :
21/06/2014, 04:20
... 1500-1700 mm; and • Southern Ca Pass (Khanh Hoa, Ninh Thuan): < 600 mm The landforms of the Southern Central Coast comprise: (i) mountains and midlands, (ii) river deltas, and (iii) coastal sand dunes, ... land area of the Southern Central Coast, about 19% comprises land that is suitable for agriculture (of which about 21% is cultivated), 39% comprises forestry land, and 35% comprises unused land, ... degradation and desertification are common particularly in Quang Ngai and Binh Dinh Provinces; • flooding often occurs in the wet season; • sand encroachment occurs inland due to strong winds and limited...
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